Wheel type moving device and carrier

Abstract

The utility model discloses a wheel type moving device and a carrier. The wheel type moving device comprises a bearing frame; a carrier; the clamping mechanism is used for detachably clamping the carrier on the bearing frame; the clamping mechanism comprises a clamping piece and a clamping groove, the carrier comprises a clamping rod contained in the clamping groove, and the clamping piece can move between a first position where the clamping piece stretches into the clamping groove to fix the clamping rod in the clamping groove and a second position where the clamping piece retreats from the clamping groove to enable the clamping rod to be separated from the clamping groove. The carrier comprises a support device which comprises a first support and a second support; the first support comprises two short rods, two long rods and a supporting rod connected between the two long rods. The second support comprises a first connecting rod, and the first connecting rod is arranged on the supporting rod. The belt guiding mechanism is connected between the long rod and the first connecting rod and used for being matched with a fixing belt assembly to fix the support device to a seat.

Description

Technical Field

[0001] This utility model relates to a wheeled mobile device and vehicle. Background Technology

[0002] As people's living standards improve, more and more people are keeping pets, such as dogs and cats. During this time, pets may need regular veterinary checkups and treatments, or travel with their owners. In some cases, sick pets require transport to a veterinary hospital by medical personnel or their owners for treatment.

[0003] Currently, incidents of pet owners or veterinarians being scratched or bitten by pets frequently occur during clinical examinations or treatments. Therefore, the proper handling of pets is a crucial issue. Stretchers are a commonly used rescue tool in medical emergencies. While pet-specific stretchers have emerged in the burgeoning pet industry, existing stretchers generally rely on manual transport. However, for large pets or animals, manual transport is too strenuous and wastes rescue time. Therefore, there is an urgent need for an organization that can quickly transfer pets.

[0004] In addition, existing pet transport vehicles typically have a protective shield to better protect pets. The shield is usually detachably connected to the vehicle via a buckle, but the existing buckle structure requires the user to insert or remove it multiple times to connect or disconnect it, which is inconvenient and results in a poor user experience.

[0005] Existing vehicles such as strollers and child safety seats are typically equipped with seatbelt assemblies to keep occupants in a seated position and reduce the amplitude of occupant vibrations during impacts. Seatbelt assemblies generally include buckles and two seatbelts secured to the seat. One seatbelt connects to the male buckle of the buckle, and the other to the female buckle. After the occupant is seated, the tongue of the male buckle is inserted into the female buckle and locked in place until manually released by operating the buckle's locking mechanism. This configuration allows the seatbelt assembly to keep the occupant inside the vehicle during seating, preventing them from leaving and ensuring their safety. However, existing buckles are relatively complex and heavy. Therefore, there is an urgent need for a simpler, lighter buckle. Utility Model Content

[0006] This utility model provides a wheeled mobile device, comprising: a wheel assembly including a front wheel assembly and a rear wheel assembly; a support frame; a vehicle frame including a front rod connected to the front wheel assembly and a rear rod connected to the rear wheel assembly; one of the front rod and the rear rod is pivotally connected to the support frame to form a first pivot point, and the front rod and the rear rod are pivotally connected to each other to form a second pivot point; the vehicle frame has an extended state and a folded state; and a first locking mechanism disposed between the vehicle frame and the support frame; the first locking mechanism includes a first fixed seat and a second fixed seat pivotally connected to each other, forming... The first fixed seat is fixed to the other of the front and rear rods; the second fixed seat is pivotally connected to the support frame, forming a fourth pivot point; the first locking mechanism has a locked state and an unlocked state. When the first locking mechanism is in the locked state, the first fixed seat and the second fixed seat are relatively fixed, which can lock the frame in the unfolded state; when the first locking mechanism is in the unlocked state, the first fixed seat and the second fixed seat can rotate relative to each other, allowing the frame to switch between the unfolded state and the folded state.

[0007] Furthermore, the first locking mechanism also includes a first locking member, a first locking groove, a second locking groove, and an unlocking member; the first locking groove is disposed on the first fixed base, and the second locking groove is disposed on the second fixed base; when the first locking mechanism is in the locked state, the first locking member simultaneously engages with the first locking groove and the second locking groove; the unlocking member is movably mounted on the first fixed base, and the unlocking member can drive the first locking member to disengage from one of the first locking groove and the second locking groove, so that the first locking mechanism changes from the locked state to the unlocked state.

[0008] Furthermore, the first locking mechanism also includes a first elastic element, the two ends of which abut against the first locking element and the second fixed seat respectively. The first elastic element causes the first locking element to tend to move toward the first locking groove. The unlocking element includes a pressing part and a pushing part connected to each other. The first fixed seat has a sliding groove for slidingly receiving the pressing part and a limiting hole corresponding to the pushing part. The pushing part contacts the first locking element after passing through the limiting hole.

[0009] Furthermore, the end of the pushing part is also provided with a hook to prevent the pressing part from disengaging from the sliding groove.

[0010] Furthermore, the frame also includes a first transition member and a second transition member fixed to the support frame, one of the front member and the rear member is pivotally connected to the first transition member, the other of the front member and the rear member is fixed to the first fixed seat, and the second fixed seat is pivotally connected to the second transition member.

[0011] Furthermore, the support frame includes two short rods and two long rods connected in sequence, and a crossbar located between the two long rods; the first transition member is fixed on the long rod, and the second transition member is fixed on the crossbar; or the second transition member is fixed on the long rod, and the first transition member is fixed on the crossbar.

[0012] Furthermore, the wheeled mobile device also includes a locking mechanism disposed on the support frame. The locking mechanism is used to detachably lock the vehicle onto the support frame. The locking mechanism has an engaged state and an unlocked state. When the locking mechanism is in the engaged state, the vehicle is locked to the locking mechanism. When the locking mechanism is in the unlocked state, the vehicle can be separated from the locking mechanism.

[0013] Furthermore, the support frame includes two short rods and two long rods connected in sequence, and two engaging mechanisms are respectively disposed on the two opposite short rods.

[0014] Furthermore, the engaging mechanism includes a housing and an engaging member movably disposed on the housing. The housing is provided with a slot, and the carrier includes an engaging rod received in the slot. The engaging member is movable between a first position extending into the slot to fix the engaging rod in the slot and a second position retracting from the slot to allow the engaging rod to disengage from the slot.

[0015] Furthermore, the housing includes an upper shell and a lower shell, the upper shell and the lower shell together defining a receiving space for the engaging member to slide, the slot is provided in the lower shell, a through hole is formed between the upper shell and the lower shell to communicate with the receiving space and the slot, the lower shell is also provided with an operating groove communicating with the receiving space, the engaging member includes a latch and an operating part connected to each other, the latch can pass through the through hole, the operating part can move in the operating groove, thereby driving the latch to move between a first position inserted into the slot and a second position withdrawn from the slot.

[0016] Furthermore, the engaging mechanism also includes a second elastic element, the two ends of which abut against the lower shell and the operating part respectively, and the second elastic element causes the latch to tend to move toward the slot.

[0017] Furthermore, the frame also includes a pivot seat, through which the front link and the rear link are pivotally connected to each other; and / or, the frame includes two front links and two rear links, the two front links being disposed outside the two rear links, and the first locking mechanism being disposed on the front links.

[0018] Furthermore, the pivot seat includes a first seat body and a second seat body that can rotate relative to each other. Both the first seat body and the second seat body are provided with engagement grooves, and the front rod and the rear rod are respectively engaged and fixed in the engagement grooves corresponding to the first seat body and the second seat body.

[0019] Further, the wheel assembly includes: an adapter seat connected to the front or rear rod; a universal joint fixed to the adapter seat; a geared disc on the universal joint; a wheel seat pivotally connected to the universal joint; a caster pivotally connected to the wheel seat; and a brake assembly for limiting the rotation of the wheel seat relative to the adapter seat and limiting the rotation of the caster relative to the wheel seat; the brake assembly includes a pedal and a brake spring pivotally connected to the wheel seat, the brake spring including a retaining tooth and a brake portion, the pedal driving the retaining tooth to engage with the geared disc to limit the rotation of the wheel seat relative to the adapter seat, and / or, the pedal driving the brake portion to abut against the caster to limit the rotation of the caster relative to the wheel seat.

[0020] Furthermore, the brake spring also includes a reset spring, which is used to drive the locking teeth to disengage from the gear plate, and / or, the reset spring is used to drive the brake part to separate from the caster.

[0021] Furthermore, the brake part is provided with raised points that engage with the grooves of the caster.

[0022] Furthermore, the wheeled mobility device also includes a vehicle comprising: a support assembly; and at least one guide mechanism disposed on the support assembly for cooperating with a fixing belt assembly to secure the support assembly to a vehicle seat.

[0023] Furthermore, the support device includes a first support, a second support, and a support plate located between the first support and the second support, and the guide mechanism is disposed on the second support and / or the support plate.

[0024] Furthermore, the belt guiding mechanism includes a bottom shell and a top shell connected to the bottom shell, the bottom shell and the top shell together defining a channel having a first port and a second port through which the fixing belt assembly passes.

[0025] Furthermore, the channel also has a side inlet connecting the first port and the second port, and the side inlet has a guiding slope.

[0026] Furthermore, a first rib and a second rib are respectively provided on the opposite sidewalls of the channel, and the first rib and the second rib are alternately arranged in the extension direction of the fixing belt assembly.

[0027] Furthermore, the bottom shell is fixed to the support plate, and the top shell is fixed to the second bracket.

[0028] Furthermore, the second bracket is provided with two opposing fixing plates, and the carrier includes two guide mechanisms, the face shell of each guide mechanism being fixed to one of the fixing plates.

[0029] Furthermore, the guiding mechanism also includes a positioning seat that passes through the support plate, and the bottom shell is fixed to the positioning seat.

[0030] This utility model also provides a wheeled mobile device, including: a support frame; a carrier detachably mounted on the support frame; and a locking mechanism for detachably locking the carrier onto the support frame; the locking mechanism has an engaged state and an unlocked state, when the locking mechanism is in the engaged state, the carrier is locked to the locking mechanism, and when the locking mechanism is in the unlocked state, the carrier can be separated from the locking mechanism; the locking mechanism includes a locking member and a slot, the carrier includes a locking rod received in the slot, and the locking member can move between a first position extending into the slot to fix the locking rod in the slot and a second position exiting the slot to allow the locking rod to disengage from the slot.

[0031] Furthermore, the engaging component includes a latch and an operating part connected to each other. The operating part can be operated to move the latch between a first position extending into the slot and a second position exiting the slot. One end of the latch has a guide slope that contacts the engaging rod.

[0032] Furthermore, the carrier includes a guide mechanism disposed on the engaging rod, and the engaging mechanism is also provided with a limiting notch communicating with the slot, and the guide mechanism is positioned within the limiting notch.

[0033] Furthermore, the engaging rod is movable between a third position near the latch and a fourth position away from the latch within the slot. When the engaging rod is in the third position, the engaging member fixes the engaging rod within the slot. When the engaging rod is in the fourth position, the engaging rod separates from the engaging member. When the engaging member is in the first position, the distance between the latch and the side wall of the slot is greater than the width of the engaging rod.

[0034] This utility model also provides a carrier, including: a support device including a first support, a second support, and a support plate located between the first support and the second support; and a carrying cloth covering the support plate.

[0035] Furthermore, the carrying cloth includes a main body and at least one handle disposed on the edge of the main body.

[0036] Furthermore, each of the two opposite long sides of the main body is provided with two handles.

[0037] Furthermore, the carrying cloth also includes two fixing parts located at both ends of the main body, each fixing part being sleeved on one end of the support plate.

[0038] Furthermore, the vehicle includes a restraint device comprising a plurality of spaced restraint straps, the two ends of each restraint strap passing through buckles disposed on the support plate or the carrying fabric, to adjust the length of the restraint straps.

[0039] Furthermore, the vehicle also includes a base fabric covering the support plate, and the fasteners are disposed on the base fabric.

[0040] Furthermore, the fastener includes a locking ring, which comprises two rings.

[0041] This utility model also provides a carrier, including: a support device; a base fabric disposed on the support device; a mesh fabric disposed on the base fabric, with an accommodating space formed between the base fabric and the mesh fabric; and a fastener assembly, including a fastener body and a locking member; the fastener body has a channel, and the locking member is switchable between a first position closing the channel and a second position opening the channel, so that any two of the base fabric, the mesh fabric, and the support device are detachably connected by the fastener assembly.

[0042] Furthermore, the base fabric includes a first connecting strap, the mesh fabric includes a second connecting strap, and the fastener assembly includes a first fastener assembly disposed between the first connecting strap and the second connecting strap.

[0043] Furthermore, the buckle body of the first buckle assembly is provided with a first connecting hole and a second connecting hole, one end of the first connecting strap is provided with a first collar, and one end of the second connecting strap is provided with a second collar; one of the first collar and the second collar passes through the first connecting hole and is fixedly connected to the buckle body, and the other of the first collar and the second collar can pass through the channel to enter the second connecting hole.

[0044] Furthermore, the buckle body is provided with a first connecting hole and a second connecting hole, and the buckle body also includes a support rod located between the first connecting hole and the second connecting hole. The locking member is slidably disposed on the support rod to move between the first position and the second position.

[0045] Furthermore, the locking member has a receiving groove for the support rod to pass through, and the fastener assembly also includes an elastic member located in the receiving groove, the elastic member being used to drive the locking member to move to the first position.

[0046] Furthermore, the support rod is provided with a stop portion, one end of the elastic member abuts against the stop portion, and the other end of the elastic member abuts against the inner wall of the receiving groove.

[0047] Furthermore, the locking member has an outwardly protruding operating part at the end away from the channel.

[0048] Furthermore, the locking member includes a first pivot portion, a second pivot portion, a first force-applying portion, a second force-applying portion, and a blocking portion. The first pivot portion and the second pivot portion are pivotally connected to the buckle body, the first force-applying portion and the second force-applying portion are connected to the first pivot portion and the second pivot portion, respectively, and the blocking portion is located between the first force-applying portion and the second force-applying portion and can move between the first position and the second position.

[0049] Furthermore, the axes of the first pivot and the second pivot are offset from each other, and the locking member is made of an elastically deformable material; and / or, the edge of the buckle body near the channel is provided with a limiting protrusion protruding toward the second connecting hole, and the blocking part engages with the limiting protrusion in the first position.

[0050] Furthermore, the base fabric includes a fixing strap, the support device is provided with a positioning piece, and the fastener assembly includes a second fastener assembly disposed between the positioning piece and the fixing strap; and / or, the mesh fabric includes a second connecting strap, the support device is provided with a third connecting strap, and the fastener assembly includes a third fastener assembly disposed between the second connecting strap and the third connecting strap.

[0051] Furthermore, the support device includes a first support, a second support, and a support plate located between the first support and the second support. The positioning piece is disposed on the support plate. The buckle body of the second buckle assembly has a first connecting hole and a second connecting hole. One end of the fixing strap is provided with a third collar, and one end of the positioning piece is provided with a fourth collar. One of the third collar and the fourth collar passes through the first connecting hole and is fixedly connected to the buckle body. The other of the third collar and the fourth collar can pass through the channel to enter the second connecting hole.

[0052] Furthermore, the base fabric includes a first connecting strap, the mesh fabric includes a second connecting strap, and the fastener assembly includes a first fastener assembly disposed between the first connecting strap and the second connecting strap.

[0053] Furthermore, the base fabric includes a main body, the fixing strap is located at the edge of the main body, one end of the fixing strap is connected to the second fastener assembly, and the first connecting strap is disposed at the other end of the fixing strap.

[0054] Furthermore, the first connecting strip is integrally formed with the fixing strip, or the first connecting strip is fixed to the main body at a position corresponding to the fixing strip and extends in a direction opposite to the extension direction of the fixing strip.

[0055] Furthermore, one end of the second connecting strap is provided with a second loop that passes through the first connecting hole and is fixedly connected to the buckle body, and one end of the first connecting strap is provided with a first loop that passes through the channel to enter the second connecting hole. The first loop is detachably connected to the base fabric by Velcro.

[0056] Furthermore, the mesh fabric includes a second connecting strap, the support device is provided with a third connecting strap, and the fastener assembly includes a third fastener assembly disposed between the second connecting strap and the third connecting strap.

[0057] Furthermore, the support device includes a first support, a second support, and a support plate located between the first support and the second support. The third connecting strap is disposed on the support plate and is detachably connected to the base fabric by Velcro.

[0058] This utility model also provides a carrier, including: a support device; a base fabric disposed on the support device; a mesh fabric disposed on the base fabric, with an accommodating space formed between the base fabric and the mesh fabric; and a first fastener assembly, including a male fastener and a female fastener, one of the male fastener and the female fastener being connected to the base fabric via a first connecting strap, and the other of the male fastener and the female fastener being connected to the mesh fabric via a second connecting strap, wherein the male fastener is detachably inserted into the female fastener.

[0059] This utility model also provides a wheeled mobile device, comprising: a wheel assembly including a front wheel assembly and a rear wheel assembly; a frame including a front support frame connected to the front wheel assembly and a rear support frame connected to the rear wheel assembly, the front support frame and the rear support frame being pivotally connected to each other so that the frame can switch between an unfolded state and a folded state; a locking groove is provided on the frame; a carrier, provided with a second locking mechanism; the second locking mechanism includes a second locking member, the second locking member being movable on the carrier and having a locked position and an unlocked position; when the carrier is mounted on the frame and the second locking member is in the locked position, the second locking member extends into the locking groove to lock the carrier to the frame; when the second locking member is in the unlocked position, the second locking member retracts from the locking groove to release the lock between the carrier and the frame.

[0060] Further, the vehicle includes a support device, the support device including a first support, the first support including two short rods and two long rods connected in sequence, and a support rod connected between the two long rods, the second locking mechanism being disposed on the support rod; and / or, when the vehicle frame is in the unfolded state, the vehicle restricts the vehicle frame from switching to the folded state by a detachable connection with the vehicle frame, the upper ends of the front support frame and the upper ends of the rear support frame are far apart from each other, and the lower ends of the front support frame and the lower ends of the rear support frame are far apart from each other; when the vehicle frame is in the folded state, the vehicle detaches from the vehicle frame, the upper ends of the front support frame and the upper ends of the rear support frame are close to each other, and the lower ends of the front support frame and the lower ends of the rear support frame are close to each other.

[0061] Furthermore, the second locking mechanism also includes a drive member operably connected to the second locking member. The drive member is movable on the vehicle and has a first position and a second position. When the drive member is in the first position, the second locking member is in the locked position, and when the drive member is in the second position, the second locking member is in the unlocked position.

[0062] Furthermore, the second locking mechanism also includes a first guide post fixed to the second locking member. The driving member is provided with a first guide groove, which extends obliquely relative to the moving direction of the driving member. The first guide post can slide within the first guide groove. When the driving member switches between the first position and the second position, the second locking member can switch between the locked position and the unlocked position through the cooperation of the first guide post and the first guide groove.

[0063] Furthermore, the second locking mechanism also includes an elastic reset member that abuts against the drive member and is used to hold the drive member in the first position.

[0064] Furthermore, the support rod has a receiving space for the drive member to move, and the support rod also has a telescopic hole group for the second locking member to pass through, the telescopic hole group communicating with the receiving space.

[0065] Furthermore, the support rod includes a rod body and a mounting cover. A cavity is formed inside the rod body, and the rod wall of the rod body has a placement opening communicating with the cavity. The mounting cover includes a top cover and a limiting member connected to one side of the top cover. The receiving space is opened inside the limiting member. The top cover is placed over the placement opening, and the limiting member is housed within the cavity. The telescopic hole group includes a first telescopic hole and a second telescopic hole, respectively. The first telescopic hole is located on the rod body and communicates with the cavity, and the second telescopic hole is located on the limiting member and communicates with the receiving space.

[0066] Furthermore, the frame includes at least one support base, each support base having a support groove, and the engaging groove is formed on the support base and communicates with the support groove; when the vehicle is installed on the frame, the support rod engages in the support groove; when the second locking member is in the locked position, the second locking member extends into the engaging groove; when the second locking member is in the unlocked position, the second locking member retracts from the engaging groove.

[0067] Furthermore, there are two support rods, and the two support rods are spaced apart along the length of the long rod. Each support rod is provided with at least one second locking mechanism. At least two support seats are respectively provided on the front support frame and the rear support frame. One support rod can be locked to the support seat on the front support frame by at least one second locking mechanism, and the other support rod can be locked to the support seat on the rear support frame by at least one second locking mechanism.

[0068] Furthermore, the support base includes a connecting segment, a support segment, and a limiting segment connected in sequence and arranged at an angle. The connecting segment, the support segment, and the limiting segment together form the support groove. The connecting segment is fixed to the vehicle frame, and the engaging groove is opened on the side of the limiting segment facing the support groove.

[0069] Furthermore, the wheeled mobile device also includes a release assembly disposed on the vehicle, the release assembly being used to drive the second locking member to move from the locked position to the released position.

[0070] Furthermore, the release assembly includes a release member slidably mounted to the vehicle, the release member being connected to the drive member via a traction member.

[0071] Furthermore, the unlocking member has a second guide groove that extends obliquely relative to the sliding direction of the unlocking member; the unlocking assembly also includes a second guide post that is disposed in the second guide groove and is slidable along the second guide groove, and the second guide post is connected to the driving member through the traction member.

[0072] Furthermore, the carrier has an inner cavity, and an operating hole communicating with the inner cavity is provided on the side wall of the carrier. The unlocking member passes through the operating hole and extends into the inner cavity and can slide relative to the operating hole. The unlocking assembly also includes a first fixing cover and a second fixing cover. The first fixing cover and the second fixing cover cooperate and are fixed to the carrier. Each of the first fixing cover and the second fixing cover has a limiting part extending into the inner cavity on its opposite side. The limiting part has a limiting groove. The two ends of the second guide post are respectively slidably limited in the corresponding limiting groove. The extending direction of the limiting groove is perpendicular to the sliding direction of the unlocking member.

[0073] Furthermore, the carrier includes: a support assembly, and at least one belt guide mechanism disposed on the support assembly and having a through passage for the fixing belt assembly to pass through.

[0074] Furthermore, the support device includes a first support and a second support. The first support includes two short rods and two long rods connected in sequence, and a support rod connected between the two long rods. The second support includes two first connecting rods and a second connecting rod connected between the two first connecting rods. The two first connecting rods are spaced apart on the support rod along the length direction of the support rod. The two guide mechanisms are respectively disposed at both ends of the support rod, and the two guide mechanisms are respectively connected between the corresponding first connecting rod and the corresponding long rod.

[0075] Furthermore, the guide mechanism includes a clamp body and a cover plate. The clamp body includes an upper shell and a lower shell connected to the upper shell. The upper shell and the lower shell together define the through-passage. The upper shell cooperates with the cover plate and is fixed to the first connecting rod. The lower shell is fixed to the long rod.

[0076] Furthermore, the through-channel has a first port and a second port through which the fixing strap assembly passes, and a side inlet connecting the first port and the second port; a first rib and a second rib are respectively provided on the opposite sidewalls of the through-channel, and the first rib and the second rib are alternately arranged in the extension direction of the through-channel.

[0077] Furthermore, the wheeled mobility device also includes a linkage mechanism, which is pivotally connected between the front support frame and the rear support frame. The linkage mechanism has an extended state and a retracted state. When the linkage mechanism switches between the extended state and the retracted state, the vehicle frame switches between the unfolded state and the folded state in conjunction with the linkage mechanism. The linkage mechanism includes a rotating member and a linkage member that are pivotally connected to each other. One of the first end of the rotating member and the first end of the linkage member is pivotally connected to the front support frame, and the other is pivotally connected to the rear support frame.

[0078] Furthermore, the linkage mechanism includes two rotating members, two linkage members, and an operating handle connected to the second end of the two rotating members. Each linkage member is pivotally connected between the first end and the second end of one of the rotating members, and the operating handle is used to drive the two rotating members to rotate synchronously.

[0079] Furthermore, the wheeled mobility device also includes a covering that covers the vehicle.

[0080] This utility model also provides a carrier, including: a support device, including a first support and a second support connected to each other; the first support includes two short rods and two long rods connected in sequence, and a support rod connected between the two long rods; the second support includes a first connecting rod, which is disposed on the support rod; and at least one guide mechanism connected between the long rods and the first connecting rod, the guide mechanism being used to cooperate with a fixing strap assembly to fix the support device to a seat.

[0081] Furthermore, there are two first connecting rods, which are spaced apart on the support rod along the length of the support rod; the second bracket also includes a second connecting rod, which is connected between the two first connecting rods; and / or, the two guide mechanisms are respectively disposed at both ends of the support rod, and the two guide mechanisms are respectively connected between the corresponding first connecting rod and the corresponding long rod.

[0082] Furthermore, the fixing strap assembly includes a constraint strap assembly, the constraint strap assembly including at least one constraint strap; the strap guiding mechanism includes a clamp body, the clamp body including an upper shell and a lower shell connected to the upper shell, the upper shell and the lower shell together defining a passage channel, the passage channel having a first port and a second port for the constraint strap to pass through; the upper shell is fixed to the first connecting rod, and the lower shell is fixed to the long rod.

[0083] Furthermore, in the two belt guide mechanisms disposed at both ends of the support rod, when the restraint belt passes through the belt guide mechanism away from the seat back, one end of the restraint belt protrudes from the first port and extends around the outside of the first bracket; the other end of the restraint belt protrudes from the second port and extends from the underside of the second bracket and the support rod.

[0084] Furthermore, when the constraint strap passes through the two belt guide mechanisms disposed at both ends of the support rod, the constraint strap passes between the second bracket and the bearing portion of the covering and extends along the guiding direction of the second connecting rod. The two ends of the constraint strap pass through the two belt guide mechanisms respectively and extend out from the outside of the first bracket.

[0085] This utility model also provides a fastener, comprising: a male fastener including a tongue-shaped piece having a locking hole; and a female fastener adapted to receive and releasably lock the tongue-shaped piece of the male fastener, the female fastener comprising: a female fastener housing having an insertion port at one end for inserting the tongue-shaped piece; and a locking member disposed within the female fastener housing, the locking member having a locking protrusion adapted to protrude into the locking hole to engage the locking member with the tongue-shaped piece; the female fastener housing includes a housing body and a cover plate connected to each other; the female fastener further includes a reinforcing fastener received between the housing body and the cover plate and held fixed relative to the housing body, wherein a tongue-shaped piece receiving cavity for receiving the tongue-shaped piece is formed between the bottom surface of the reinforcing fastener and the lower part of the housing body.

[0086] Furthermore, the female fastener housing includes a housing body and a cover plate connected to each other, wherein the housing end wall of the housing body and the cover plate end wall define the insertion port.

[0087] Furthermore, the locking element is configured to releasably retain the tongue-shaped piece within the tongue-shaped piece receiving cavity.

[0088] Furthermore, the male fastener also includes a male fastener connecting portion, which is provided with a male fastener belt hole for connecting the first webbing; the female fastener also includes a female fastener connecting portion, which is provided with a female fastener belt hole for connecting the second webbing.

[0089] Furthermore, the female fastener housing includes a housing body and a cover plate connected to each other; the cover plate includes a cover plate extension, and the cover plate extension is provided with a cover plate hole; the housing body includes a housing body extension, and the housing body extension is provided with a housing body hole; the cover plate hole and the housing body hole cooperate to form the female fastener hole.

[0090] Furthermore, the female fastener also includes a reinforcing fastener, which is housed within the female fastener housing; the reinforcing fastener has a hole corresponding to the hole on the female fastener, and the shape and size of the hole on the reinforcing fastener match the shape and size of the hole on the female fastener.

[0091] Furthermore, one end of the reinforcing fastener adjacent to the insertion port is bent and extends toward the bottom wall of the housing body to form a first vertical portion. The first vertical portion abuts against the peripheral wall of the housing body and is provided with a first limiting opening suitable for the tongue-shaped piece to pass through. The middle part of the reinforcing fastener has a second vertical portion extending toward the bottom wall of the housing body and parallel to the first vertical portion. The second vertical portion has a second limiting opening suitable for the tongue-shaped piece to pass through.

[0092] Furthermore, the female fastener also includes an elastic reset member adapted to bias the locking member so that the locking protrusion of the locking member protrudes into the locking hole of the tongue-shaped piece.

[0093] Furthermore, the housing body has two vertical walls extending vertically upward from the bottom wall of the housing body, each of the vertical walls having a groove-shaped structure opposite to each other; the female fastener also includes two guide members, the two guide members being installed in the two groove-shaped structures; the locking member has two outwardly extending arms, the two arms being slidably accommodated in the two guide members respectively.

[0094] Furthermore, both guide members have C-shaped cross-sections, and both guide members have sliding channels suitable for accommodating the arm and allowing the arm to slide.

[0095] Furthermore, the reinforcing fastener is provided with two rectangular holes, and the two guides extend through the two rectangular holes respectively.

[0096] Furthermore, the locking protrusion has a driving bevel at one end near the insertion port to allow the tongue to be inserted into the tongue receiving cavity and pass over the locking protrusion.

[0097] Furthermore, the locking protrusion has a first position and a second position; when the locking protrusion is in the first position, the locking protrusion protrudes into the tongue-shaped piece receiving cavity, and the locking member is adapted to engage with the tongue-shaped piece; when the locking protrusion is in the second position, the locking protrusion retracts from the tongue-shaped piece receiving cavity to allow the tongue-shaped piece to be inserted.

[0098] Furthermore, the female fastener also includes a release member, a portion of which protrudes from the outer surface of the cover plate for operation. The release member can be operated to disengage the locking protrusion of the locking member from the tongue. The release member includes a release member body and at least one push rod. The release member body is located between the cover plate and the reinforcing fastener. The at least one push rod extends through the reinforcing fastener and abuts against the locking member. The at least one push rod is adapted to push the locking member out of engagement with the locking hole when the release member is operated.

[0099] Furthermore, the cover plate is connected to the housing body by a plurality of fasteners, and the plurality of fasteners pass through the reinforcing fastener to secure the reinforcing fastener between the cover plate and the housing body.

[0100] Furthermore, one of the male fastener and the female fastener includes a foolproof boss, and the other of the male fastener and the female fastener includes a foolproof notch, the foolproof notch being adapted to enter or pass through the foolproof boss to define the orientation of the tongue of the male fastener when inserted into the female fastener.

[0101] Furthermore, the anti-mistake protrusion is located on the first surface of the tongue-shaped piece, and the anti-mistake notch is located on the first side of the female fastener housing and is adjacent to the upper edge of the socket; when the first surface of the tongue-shaped piece is inserted into the socket facing the first side of the female fastener housing, the anti-mistake protrusion enters or passes through the anti-mistake notch to allow the tongue-shaped piece to be further inserted into the socket; when the second surface of the tongue-shaped piece opposite to the first surface is inserted into the socket facing the first side of the female fastener housing, the housing end wall of the housing body abuts against the anti-mistake protrusion to prevent the tongue-shaped piece from being further inserted into the socket.

[0102] Furthermore, the female fastener housing includes a housing body and a cover plate that are connected to each other; the first side of the female fastener housing is either one side of the cover plate or one side of the housing body.

[0103] This utility model also provides a carrier, including: a first webbing; a second webbing; and the above-mentioned fastener, wherein the first webbing is connected to the male fastener of the fastener, and the second webbing is connected to the female fastener of the fastener. Attached Figure Description

[0104] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0105] Figure 1 This is a perspective view of a wheeled mobile device according to an embodiment. Figure 2 for Figure 1 The front view of the wheeled mobile device shown. Figure 3 for Figure 1 Left view of the wheeled mobile device shown;

[0106] Figure 4 This is an exploded perspective view of a first locking mechanism according to an embodiment. Figure 5 for Figure 4 An exploded perspective view of the first locking mechanism from another angle. Figure 6 for Figure 4 The first locking mechanism shown is in a cross-sectional view in the locked state. Figure 7 for Figure 4 The first locking mechanism shown is in the unlocked state (sectional view).

[0107] Figure 8 for Figure 2 The image shows the front view of the wheeled mobile device when it is folded up. Figure 9 for Figure 2The front view of the wheeled mobile device after it has been folded up.

[0108] Figure 10 This is a top view of a vehicle according to one embodiment. Figure 11 for Figure 10 The vehicle shown is in a bottom view. Figure 12 For along Figure 11 Enlarged sectional view of line U1-U1 in the middle. Figure 13 For along Figure 11 Enlarged sectional view of line U2-U2 in the middle. Figure 14 For along Figure 10 Enlarged sectional view of line U3-U3 in the middle;

[0109] Figure 15 for Figure 10 The image shown is a partial enlarged view of the guide mechanism after omitting the faceplate. Figure 16 for Figure 10 A magnified view of the guide mechanism from another angle;

[0110] Figure 17 for Figure 1 The image shown is a perspective view of the wheeled mobile device after the vehicle has been removed. Figure 18 for Figure 17 The top view of the engagement mechanism is shown. Figure 19 for Figure 17 The bottom view of the engagement mechanism is shown. Figure 20 for Figure 17 The exploded three-dimensional view of the engagement mechanism is shown. Figure 21 for Figure 17 A cross-sectional view of the wheeled mobile device shown. Figure 22 for Figure 21 The enlarged view at point N1 shows the engaging mechanism in the engaged state. Figure 23 for Figure 21 The enlarged view at point N1 shows the locking mechanism in the unlocked state. Figure 24 for Figure 21 Enlarged view of point N2, where the locking lever is in the third position; Figure 25 for Figure 21 Enlarged view of point N2, where the locking lever is in the fourth position;

[0111] Figure 26 This is a perspective view of a wheeled mobility device according to another embodiment. Figure 27 for Figure 26 Another perspective view of the wheeled mobile device shown. Figure 28 for Figure 26 The front view of the wheeled mobile device shown. Figure 29 for Figure 26 The left view of the wheeled mobile device shown. Figure 30 for Figure 26 Top view of the wheeled mobile device shown; Figure 31 for Figure 26 The exploded view of a partially enlarged portion of the wheeled mobile device shown. Figure 32 for Figure 26 A partially enlarged exploded view of the wheeled mobile device from another angle; Figure 33 for Figure 26 A 3D view of the wheeled mobile device after it has been folded up.

[0112] Figure 34 This is a perspective view of a wheel assembly in a freely rotating state according to an embodiment. Figure 35 for Figure 34 The main view of the wheel component is shown. Figure 36 for Figure 34 The cross-sectional view of the wheel assembly shown. Figure 37 for Figure 34 An exploded 3D view of the wheel assembly shown. Figure 38 for Figure 37 A magnified 3D view of the brake spring. Figure 39 for Figure 37 A magnified 3D view of the brake spring from another angle;

[0113] Figure 40 This is a perspective view of a wheel assembly in a braking state according to an embodiment. Figure 41 for Figure 40 The main view of the wheel component is shown. Figure 42 for Figure 40 The cross-sectional view of the wheel assembly shown. Figure 43 A schematic diagram showing the engagement of the brake spring and the gear disc is shown;

[0114] Figure 44 This is a perspective view of a vehicle according to another embodiment. Figure 45 for Figure 44 A schematic diagram of the carrying fabric;

[0115] Figure 46 A schematic diagram of a carrying cloth according to another embodiment;

[0116] Figure 47 This is a perspective view of a vehicle according to another embodiment. Figure 48 for Figure 47 A perspective view of the vehicle shown from another angle;

[0117] Figure 49 This is a perspective view of a vehicle installed on a trolley according to one embodiment;

[0118] Figure 50 This is a perspective view of a vehicle according to one embodiment. Figure 51 for Figure 50 The image shown is a 3D view of the vehicle after the mesh has been removed. Figure 52 for Figure 51 The vehicle shown is in a bottom view. Figure 53 This is a schematic diagram showing the base fabric separated from the support plate. Figure 54 This is a magnified view of the connection between the base fabric and the support plate. Figure 55 for Figure 52 A partial enlarged view of the vehicle shown. Figure 56 for Figure 50 The front view of the mesh fabric shown;

[0119] Figure 57 This is a front view of a fastener assembly according to one embodiment. Figure 58 for Figure 57 The diagram shows a perspective view of the fastener assembly. Figure 59 for Figure 58 The exploded perspective view of the fastener assembly shown is as follows. Figure 60 for Figure 58 The diagram shows a cross-sectional view of the fastener assembly in one state. Figure 61 for Figure 58 A cross-sectional view of another state of the fastener assembly shown;

[0120] Figure 62 This is a bottom view of a vehicle according to another embodiment. Figure 63 This is a front view of a mesh fabric according to another embodiment;

[0121] Figure 64 This is a front view of a fastener assembly according to another embodiment. Figure 65 for Figure 64 A perspective view of the fastener assembly shown;

[0122] Figure 66 This is a front view of a fastener assembly according to another embodiment. Figure 67 for Figure 66 A perspective view of the fastener assembly shown;

[0123] Figure 68 This is a front view of a fastener assembly according to another embodiment. Figure 69 for Figure 68 The main view of the buckle assembly when it is unlocked. Figure 70 for Figure 68 Side view of the fastener assembly shown.

[0124] Figure 71 This is a front view of a fastener assembly according to another embodiment. Figure 72 for Figure 71 A perspective view of the fastener assembly shown;

[0125] Figure 73 This is a bottom view of a vehicle according to another embodiment. Figure 74 This is a magnified view of the connection between the positioning piece and the fixing strap. Figure 75 This is a magnified view of a portion of the area where the positioning piece and the fixing strap separate.

[0126] Figure 76 for Figure 73 A partially enlarged view of another state of the vehicle shown. Figure 77 for Figure 73 A partially enlarged view of another state of the vehicle shown. Figure 78 for Figure 73 A partial enlarged view of another state of the vehicle shown.

[0127] Figure 79 This is a perspective view of a wheeled mobile device according to an embodiment of this application;

[0128] Figure 80 for Figure 79 A perspective view of the wheeled mobile device shown, omitting the covering material;

[0129] Figure 81 for Figure 79 A perspective view of the frame in the wheeled mobile device shown.

[0130] Figure 82 for Figure 79 A top view of the chassis in the wheeled mobile device shown;

[0131] Figure 83 for Figure 79 The side view of the frame of the wheeled mobile device shown, with the frame in an unfolded state;

[0132] Figure 84 for Figure 79 The side view of the frame of the wheeled mobile device shown, wherein the frame is in a state between an unfolded state and a folded state;

[0133] Figure 85 for Figure 79 The side view of the frame of the wheeled mobile device shown, with the frame in a folded state;

[0134] Figure 86 for Figure 80 An exploded view of the wheeled mobile device shown.

[0135] Figure 87 For along Figure 80 Sectional view of line U31-U31 in the middle;

[0136] Figure 88 for Figure 80 The figure shows a perspective view of the wheeled mobile device with the vehicle in a frontal position. The vehicle is equipped with a second locking mechanism, a release assembly, and a guide mechanism.

[0137] Figure 89 for Figure 88 An exploded view of part of the second locking mechanism and release assembly in the vehicle shown;

[0138] Figure 90for Figure 80 The diagram shows a perspective view of the wheeled mobile device with the vehicle in the reverse position. The vehicle is equipped with a second locking mechanism, a release assembly, and a guide mechanism.

[0139] Figure 91 for Figure 90 An exploded view of part of the second locking mechanism and release assembly in the vehicle shown;

[0140] Figure 92 for Figure 91 A perspective view of the driving component in the second locking mechanism shown;

[0141] Figure 93 for Figure 79 Side view of the wheeled mobile device shown, omitting the covering material;

[0142] Figure 94 For along Figure 93 A cross-sectional view of line U32-U32, for ease of display. Figure 94 The sectional view was rotated 90 degrees clockwise;

[0143] Figure 95 For along Figure 80 A cross-sectional view along line U33-U33, showing the unlocking assembly in the state where the second locking element is not unlocked;

[0144] Figure 96 For along Figure 93 A cross-sectional view along line U34-U34, showing the unlocking assembly in the state where the second locking element is not released; for ease of display. Figure 96 The sectional view was rotated 90 degrees clockwise;

[0145] Figure 97 For along Figure 80 A cross-sectional view along line U33-U33, showing the release assembly in the state of releasing the second locking element;

[0146] Figure 98 For along Figure 93 A cross-sectional view along line U34-U34, showing the release assembly in the state of releasing the second locking element; for ease of display. Figure 98 The sectional view was rotated 90 degrees clockwise;

[0147] Figure 99 for Figure 90 An exploded view of the vehicle with a guiding mechanism. Figure 100 for Figure 99 A 3D view of the guide mechanism in the middle;

[0148] Figure 101 for Figure 88 The side view of the vehicle shown. Figure 102 For along Figure 101A sectional view of line U35-U35 in the middle;

[0149] Figure 103 This is a top view of the vehicle in one embodiment of this application. Figure 104 for Figure 103 The vehicle shown is in a bottom view. Figure 105 For along Figure 103 A sectional view of line U36-U36 in the middle;

[0150] Figure 106 for Figure 79 A perspective view of the wheel assembly in the wheeled mobile device shown, wherein the wheel assembly is in a state of free rotation; Figure 107 A three-dimensional view of the brake spring is shown;

[0151] Figure 108 This is a schematic diagram of a fastener according to an embodiment of the present invention, wherein the male fastener and the female fastener are separate;

[0152] Figure 109 for Figure 108 The top view of the fasteners, in which the male fastener and the female fastener are engaged; Figure 110 for Figure 109 The fastener shown is a bottom view. Figure 111 for Figure 109 Side view of the fastener shown;

[0153] Figure 112 for Figure 108 A perspective view of the male fastener in the middle;

[0154] Figure 113 for Figure 108 Exploded perspective view of the female fastener in the middle;

[0155] Figure 114 for Figure 109 The fastener shown is a perspective view, in which the release element is not pressed; Figure 115 It shows along Figure 114 The cross section intercepted by line U11-U11; Figure 116 It shows along Figure 114 The cross section intercepted by line U12-U12;

[0156] Figure 117 for Figure 109 The fastener shown is a perspective view, in which the release element is pressed down; Figure 118 It shows along Figure 117 The cross section cut by line U13-U13; Figure 119 It shows along Figure 117 The cross section cut by line U14-U14;

[0157] Figure 120This is a perspective view of the male fastener of a fastener according to an embodiment of the present invention;

[0158] Figure 121 This is a perspective view of the female fastener of a fastener according to an embodiment of the present invention;

[0159] Figure 122 for Figure 121 A perspective view of the cover plate of the female fastener shown;

[0160] Figure 123 for Figure 120 and Figure 121 The diagram shows a perspective view of the fastener, in which the male fastener is mounted onto the female fastener.

[0161] Figure 124 Showing the effect after removing the cover plate Figure 123 The fastener shown.

[0162] Figure 125 It shows along Figure 123 The cross section cut by line U15-U15;

[0163] Figure 126 for Figure 123 The fastener shown is a bottom view, in which the male fastener is installed backwards onto the female fastener;

[0164] Figure 127 It shows along Figure 126 The cross section cut by line U16-U16. Detailed Implementation

[0165] Please see Figures 1-3 According to an embodiment of this application, a wheeled mobile device 100 includes a wheel assembly 10, a frame 20, a carrier 30, a support frame 40, and a first locking mechanism 50. The wheel assembly 10 includes a front wheel assembly 12 and a rear wheel assembly 14. The frame 20 includes a front member 22 connected to the front wheel assembly 12 and a rear member 24 connected to the rear wheel assembly 14. The middle portions of the front member 22 and the rear member 24 are pivotally connected to each other. The support frame 40 is pivotally connected to the front member 22 and the rear member 24, respectively. The carrier 30 is detachably mounted on the support frame 40. The frame 20 has... Figure 2 The unfolded state shown and Figure 9 The folded state is shown. A first locking mechanism 50 is disposed between the frame 20 and the carrier frame 40. The first locking mechanism 50 has a locked state and an unlocked state. When the first locking mechanism 50 is in the locked state, the frame 20 is locked in either the unfolded or folded state. When the first locking mechanism 50 is in the unlocked state, the frame 20 can freely switch between the unfolded and folded states.

[0166] In this embodiment, the wheel assembly 10 includes two front wheel assemblies 12 and two rear wheel assemblies 14. The frame 20 includes two front struts 22 connected to the two front wheel assemblies 12 and two rear struts 24 connected to the two rear wheel assemblies 14. The two front struts 22 are arranged in parallel and are fixedly connected to each other by a front reinforcing rod 23. The front reinforcing rod 23 and the two front struts 22 can be collectively referred to as the front support frame. The two rear struts 24 are arranged in parallel and are fixedly connected to each other by a rear reinforcing rod 25. The rear reinforcing rod 25 and the two rear struts 24 can be collectively referred to as the rear support frame. Each front strut 22 and its corresponding rear strut 24 are arranged intersectingly and are rotatably connected by a pin. More specifically, the two rear struts 24 are located outside the two front struts 22, that is, the distance between the two rear struts 24 is slightly greater than the distance between the two front struts 22. In other embodiments, the two rear links 24 are located inside the two front links 22, that is, the distance between the two rear links 24 is slightly smaller than the distance between the two front links 22.

[0167] like Figure 1 and Figure 17 As shown, the support frame 40 is mainly used to support the vehicle 30. The structure of the support frame 40 is roughly a square frame, which includes two short rods 42 and two long rods 44. The two short rods 42 and the two long rods 44 are parallel to each other and connected end to end, so as to facilitate the user to push and pull the frame 20. In order to increase the structural strength, two parallel and spaced crossbars 43 are also provided between the two long rods 44.

[0168] like Figure 4 and Figure 17 As shown, in this embodiment, the frame 20 further includes a first transition member 26 and a second transition member 28 fixed to the support frame 40. The first transition member 26 is pivotally connected to the rear rod 24, and the second transition member 28 is pivotally connected to the front rod 22. Specifically, one end of the first transition member 26 is fixed to the long rod 44 by screws or welding, and the other end of the first transition member 26 is pivotally connected to the rear rod 24. One end of the second transition member 28 is inserted into and fixed to the crossbar 43, and the other end of the second transition member 28 is pivotally connected to the front rod 22 by the first locking mechanism 50. It can be understood that in other embodiments, the first transition member 26 may also be pivotally connected to the front rod 22, and the second transition member 28 may be pivotally connected to the rear rod 24. It can also be understood that in other embodiments, one end of the second transition member 28 may not be fixed to the crossbar 43, but may be fixed to the short rod 42. In other embodiments, if the distance between the two long rods 44 of the support frame 40 is not equal, or if the front rod 22 and the rear rod 24 are curved, the first transition member 26 and the second transition member 28 may both be pivotally connected to the long rods 44. Alternatively, the first transition member 26 and the second transition member 28 may be omitted, in which case the front rod 22 and the rear rod 24 are directly pivotally connected to the support frame 40.

[0169] In this embodiment, the two first locking mechanisms 50 are respectively disposed at the upper ends of the two front rods 22. However, it is understood that the first locking mechanisms 50 may also be disposed at the upper end of the rear rod 24. In addition, the number of first locking mechanisms 50 may be four or more.

[0170] Please see Figure 4 and Figure 5 The first locking mechanism 50 includes a first fixed seat 51, a second fixed seat 52, a first locking member 53, an unlocking member 54, and a first elastic member 55.

[0171] The first fixing seat 51 is generally disc-shaped and is fixedly connected to the upper end of the front rod 22. In other embodiments, the first fixing seat 51 may also be fixedly connected to the upper end of the rear rod 24. A sliding groove 512 for slidingly receiving the unlocking member 54 is provided on one side of the first fixing seat 51, and a generally annular first receiving space 511 is provided on the other side of the first fixing seat 51. A hollow bushing 514 is provided in the center of the first receiving space 511. The first fixing seat 51 also includes a first locking groove 516 located at the edge of the first receiving space 511 and surrounding the bushing 514.

[0172] The second fixing base 52 includes a generally disc-shaped main body and a connecting arm 522 fixedly connected to the main body. The connecting arm 522 is pivotally connected to the second transition member 28 via a pin. A generally annular second accommodating space 521 is provided inside the main body. The second fixing base 52 has a rotating shaft 524 in the middle of the second accommodating space 521. The rotating shaft 524 can be inserted into the bushing 514 of the first fixing base 51 and can rotate relative to the bushing 514. The second fixing base 52 also includes a second locking groove 526 provided at the edge of the second accommodating space 521 and surrounding the rotating shaft 524.

[0173] See Figure 2 The support frame 40, front link 22, rear link 24, and first locking mechanism 50 define a four-bar linkage. More specifically, the rear link 24 and the first pivot point O1 of the first transition member 26 fixed to the support frame 40, the second pivot point O2 of the front link 22 and the rear link 24, the third pivot point O3 of the first fixed seat 51 and the second fixed seat 52, and the fourth pivot point O4 of the second fixed seat 52 and the second transition member 28 fixed to the support frame 40 form the four hinge points of the four-bar linkage.

[0174] See Figure 6 and Figure 7The first locking member 53 is housed within the accommodating space formed by the first accommodating space 511 and the second accommodating space 521, thereby simultaneously engaging with the first locking groove 516 and the second locking groove 526 to achieve locking. A through hole 532 is also formed in the middle of the first locking member 53. The bushing 514 of the first fixing seat 51 passes through the through hole 532, allowing the first locking member 53 to slide back and forth along the bushing 514 within the accommodating space formed by the first accommodating space 511 and the second accommodating space 521. In this embodiment, the first locking member 53 is a gear, and both the first locking groove 516 and the second locking groove 526 are gear grooves that mesh with the first locking member 53. It can be understood that in other embodiments, the first locking member 53 may also be of other shapes, such as an irregular polygon, and the first locking groove 516 and the second locking groove 526 may correspondingly be of other shapes.

[0175] The unlocking member 54 can drive the first locking member 53 to move axially. The unlocking member 54 includes a generally circular pressing portion 542 and a plurality of pushing portions 544 extending from the edge of the pressing portion 542 to one side. The pressing portion 542 is slidably received within the sliding groove 512 of the first fixing base 51. In one embodiment, the pressing portion 542 protrudes from the edge of the sliding groove 512, for example, protruding approximately 2.5 mm. In addition, the middle part of the pressing portion 542 may also have a certain recess to facilitate pressing by hand. The bottom of the sliding groove 512 is also provided with a plurality of limiting holes 5122. After the plurality of pushing portions 544 pass through the corresponding limiting holes 5122, they abut against the first locking member 53. In order to prevent the pressing portion 542 from disengaging from the sliding groove 512, the end of the pushing portion 544 is also provided with a hook 5442. The hook 5442 has a certain elasticity and can abut against the edge of the limiting hole 5122, thereby preventing the unlocking part 54 from falling off the first fixed seat 51 when the pressing part 542 slides in the sliding groove 512.

[0176] The first elastic element 55 is disposed inside the second fixed base 52. Both ends of the first elastic element 55 abut against the first locking element 53 and the side of the second fixed base 52 facing the first fixed base 51, respectively. In this embodiment, the first elastic element is a compression spring, which causes the first locking element 53 to have a constant tendency to move towards the first locking groove 516.

[0177] Please refer to the following: Figure 6 and Figure 7 The working principle of the first locking mechanism 50 is briefly described below.

[0178] When the first locking mechanism 50 is in Figure 6 In the locked state shown, the first locking member 53 engages simultaneously with the first locking groove 516 and the second locking groove 526 to achieve locking. At this time, the first fixing seat 51 and the second fixing seat 52 are fixed to each other and cannot rotate relative to each other. Therefore, the frame 20 is also locked. Figure 2 The wheeled mobility device 100 is shown in its unfolded state. In this state, the overall height of the wheeled mobility device 100 is relatively high to facilitate the user in pushing and pulling the animal located on the vehicle 30.

[0179] When the wheeled mobile device 100 needs to be transferred to an ambulance, the frame 20 can be folded up, thereby reducing the height of the wheeled mobile device 100. In this embodiment, when the frame 20 is folded up or unfolded, it is not necessary to remove the vehicle 30 from the frame 20. At this time, the unlocking parts 54 of the two first locking mechanisms 50 can be pressed simultaneously by hand, and the multiple pushing parts 544 will abut against the first locking parts 53, driving the first locking parts 53 to overcome the elastic force of the first elastic member 55 and slide towards the second receiving space 521. Figure 7 As shown, when the first locking member 53 enters the second accommodating space 521, the first locking member 53 disengages from the first locking groove 516. At this time, the first locking mechanism 50 is in the unlocked state, and the first fixed seat 51 can rotate relative to the second fixed seat 52 around the rotating shaft 524.

[0180] like Figure 2 , Figure 8 and Figure 9 As shown, when the first fixed seat 51 can rotate relative to the second fixed seat 52, the front link 22 of the frame 20 can also pivot relative to the rear link 24, ultimately causing the front link 22 and the rear link 24 to rotate from... Figure 2 The crossover state shown is merged. Figure 9 The approximate parallel state shown means that the frame 20 is from Figure 2 The unfolded state shown is switched to Figure 8 The semi-folded state shown finally enters... Figure 9 The fully folded state shown reduces the height and volume of the wheeled mobility device 100.

[0181] In some embodiments, when the frame 20 is in Figure 9 In the fully folded state shown, rotation of the first fixing seat 51 relative to the second fixing seat 52 may cause misalignment between the first locking member 53 and the first locking groove 516 and the second locking groove 526, preventing locking. Therefore, in this folded state, the first fixing seat 51 and the second fixing seat 52 may not be locked. This makes unfolding the frame 20 more convenient and quick, eliminating the need to operate the unlocking member 54; the support frame 40 can be lifted directly upwards.

[0182] When the support frame 40 is lifted upwards, the frame 20 is moved from... Figure 9 The fully folded state shown is restored to Figure 2In the unfolded state shown, under the elastic restoring force of the first elastic member 55, the first locking member 53 will slide from the second accommodating space 521 toward the first accommodating space 511, thereby engaging again with the first locking groove 516 and the second locking groove 526 to achieve locking. At this time, the first locking mechanism 50 returns to its unfolded state. Figure 6 The locked state is shown, and the front link 22 and rear link 24 of the frame 20 are locked in place. Figure 2 The unfolded state shown.

[0183] It is understood that, in another embodiment, when the frame 20 is in Figure 9 In the fully folded state shown, the first locking mechanism 50 can also perform a locking function, thereby locking the front lever 22 and the rear lever 24 in place. Figure 9 The image shows the folded state. At this point, when the frame 20 needs to be unfolded, the unlocking member 54 must be manually pressed first. It is understood that in another embodiment, the unlocking member 54 can drive the first locking member 53 to disengage from the second locking groove 526, thereby unlocking the first locking mechanism 50. Alternatively, if other components are used to drive the first locking member 53, the unlocking member 54 and the first elastic member 55 can be omitted.

[0184] It should be noted that in the above embodiment, the first locking mechanism 50 locks the relative positions of the first fixed seat 51 and the second fixed seat 52, preventing the first fixed seat 51 and the second fixed seat 52 from rotating relative to each other, thus locking the frame 20 in a certain state. That is, as long as the first locking mechanism 50 is in the locked state, the relative positions of the first fixed seat 51 and the second fixed seat 52 are locked, thus locking the frame 20 in a certain state. This certain state is not limited to the unfolded state and the fully folded state described above; it can also be other folded states between the unfolded state and the fully folded state (such as...). Figure 8 (As shown).

[0185] According to an embodiment of this application, by pressing the unlocking member 54 of the first locking mechanism 50, the frame 20 can be switched between an unfolded state and a folded state. This facilitates storage of the wheeled mobility device 100 when not in use and does not occupy additional space. See also Figure 8 and Figure 9 When the frame 20 is switched to the fully folded state, the upper end of the front link 22 approaches the lower end of the rear link 24, and the upper end of the rear link 24 approaches the lower end of the front link 22.

[0186] like Figure 10 and Figure 11As shown, in this embodiment, the carrier 30 may have a structure similar to a stretcher, including a support device and at least one guide mechanism 33 disposed on the support device. The support device includes a first support 32, a second support 34, and a support plate 36 located between the first support 32 and the second support 34.

[0187] The first support 32 is generally an annular frame (e.g., but not limited to, a rectangular frame), comprising two long sides 321 and two short sides 323 connected to the two long sides 321. It should be noted that in this embodiment, the lengths of the two short sides 323 are not equal. Figure 10 The length of the right short side 323 is slightly shorter than the length of the left short side 323. Of course, in other embodiments, the lengths of the two short sides 323 can be equal. The first support 32 can be made of metal. In one embodiment, the two short sides 323 can also be covered with a non-slip material such as leather or rubber for easy gripping. The second support 34 has a shape roughly the same as the first support 32, but is smaller in size. Two parallel support rods 322 are provided between the two long sides of the first support 32. Each support rod 322 is also provided with two fixing seats 324.

[0188] The support plate 36 is primarily used to support pets and can be made of rigid materials (such as metal or plastic plates) or flexible materials (such as canvas), depending on the specific application. The support plate 36 is generally a square flat plate, fixed to four mounting brackets 324. See also... Figure 13 Specifically, the support plate 36 has multiple positioning seats 333 (more specifically, positioning seats 3332) at positions corresponding to the fixing seat 324, each positioning seat 333 being embedded in the support plate 36. Screws 334 (more specifically, screws 3342) pass through the positioning seats 333 and the fixing seat 324 to secure the support plate 36 to the fixing seat 324. Additionally, to enhance the joint strength, the surface of the fixing seat 324 is provided with locking washers 3242 that mate with the screws 334.

[0189] The second bracket 34 includes two longer connecting rods (also called long sides) 341 and two shorter engaging rods (also called short sides) 343. The two connecting rods 341 are fixedly connected to the two support rods 322 through the four fixing seats 324. Each of the two connecting rods 341 is also provided with a fixing ring 342 in the middle.

[0190] like Figure 12 and Figure 15 As shown, the second bracket 34 is provided with two fixing plates 326. Specifically, the two fixing plates 326 can be fixed to the two engaging rods 343 of the second bracket 34 by welding or other means, and the two fixing plates 326 are arranged opposite to each other. Each guide mechanism 33 is fixed to one fixing plate 326 by screws or other fasteners.

[0191] like Figures 10-12 as well as Figure 14-16 As shown, two guide mechanisms 33 are respectively mounted on the second bracket 34. Specifically, each guide mechanism 33 is located in the middle of the engaging rod 343 of the second bracket 34. The guide mechanism 33 includes a bottom shell 331 and a top shell 332. The bottom shell 331 is fixed to the support plate 36, and the top shell 332 is fixed to the second bracket 34. The support plate 36 is also provided with multiple positioning seats 333 corresponding to the positions of the guide mechanisms 33. The bottom shell 331 can be fixed to the positioning seats 333 (more specifically, positioning seats 3331) by means of, for example, screws 334 (more specifically, screws 3341). The top shell 332 has a receiving groove 3322 for accommodating a fixing piece 326. The fixing piece 326 is inserted into the receiving groove 3322 of the top shell 332 and fixed to the top shell 332 by multiple screws 334 (more specifically, screws 3343). The bottom shell 331 and the top shell 332 can also be fixedly connected by multiple screws. It is understood that in other embodiments, the guide mechanism 33 may be fixed to the support plate 36 solely by the positioning seat 3331, in which case the fixing piece 326 may be omitted. Similarly, in other embodiments, the guide mechanism 33 may be fixed to the second bracket 34 solely by the fixing piece 326, in which case the positioning seat 3331 may be omitted.

[0192] like Figure 12 , Figure 14 and Figure 16 As shown, the bottom shell 331 and the top shell 332 together define a constraint strap 513 for securing the strap assembly (see Figure 1). Figure 14The channel 330 is through which the constraint band 513 passes. The channel 330 has a first port 3301 and a second port 3302. The channel 330 also has a side inlet 3303. The side inlet 3303 connects to both the first port 3301 and the second port 3302, and the side inlet 3303 has a guide ramp 3304. By providing the side inlet 3303 and the guide ramp 3304, the constraint band 513 can be easily slid laterally into the channel 330. The bottom shell 331 is provided with at least one first rib 3311 protruding toward the top shell 332. The top shell 332 is provided with at least one second rib 3312 protruding toward the bottom shell 331, and the first rib 3311 and the second rib 3312 are alternately arranged in the extension direction of the constraint band 513. That is, the first rib 3311 and the second rib 3312 are provided on the sidewalls opposite to each other within the channel 330. By appropriately setting the heights of the first rib 3311 and the second rib 3312, the constraint band 513 located between the first port 3301 and the second port 3302 bends and wraps around the tops of the first rib 3311 and the second rib 3312 within the channel 330. This causes the constraint band 513 to experience movement resistance from the first rib 3311 and the second rib 3312. Thus, when the fixing band assembly is tightened, the constraint band 513 will not easily slip relative to the support device.

[0193] Please refer to it again. Figure 17 To enable rapid assembly and disassembly of the vehicle 30, the wheeled mobility device 100 also includes a locking mechanism 60 mounted on the support frame 40. The locking mechanism 60 has… Figure 22 The shown engagement state and Figure 23 The locking and unlocking states are shown. When the locking mechanism 60 is in the locked state, the carrier 30 is locked to the locking mechanism 60, that is, the carrier 30 is fixed on the support frame 40; when the locking mechanism 60 is in the unlocked state, the carrier 30 can be separated from the locking mechanism 60, thereby facilitating the removal of the carrier 30 from the support frame 40. In this embodiment, the two locking mechanisms 60 are respectively provided on two opposite short rods 42 of the support frame 40. In other embodiments, the number of locking mechanisms 60 may also be one, three, four or more. In addition, the locking mechanisms 60 may also be provided on two long rods 44 of the support frame 40.

[0194] Please see Figures 18-20The engaging mechanism 60 includes an upper shell 62, a lower shell 64, an engaging member 66, and a second elastic member 68. The upper shell 62 and the lower shell 64 together form a housing, and the housing has an internal receiving space 63 for the engaging member 66 to slide. In this embodiment, the upper shell 62 and the lower shell 64 are assembled together by fasteners such as screws and clamped and fixed to the short rod 42. In other embodiments, the upper shell 62 and the lower shell 64 may also be integrally formed. The lower shell 64 is generally square, and a slot 642 is provided on its front side. The slot 642 is close to the short rod 42 and is provided along the extension direction of the short rod 42, and the width of the slot 642 matches the size of the engaging rod 343 of the carrier 30. The engaging rod 343 of the carrier 30 can engage within the slot 642, thereby restricting the carrier 30 from moving along the short rod 42. Figure 20 Movement along the length L. A limiting notch 644 communicating with the slot 642 is also provided on one side of the lower shell 64. When the engaging rod 343 is received within the slot 642, the guide mechanism 33 on the engaging rod 343 can be positioned within the limiting notch 644, thereby restricting the movement of the vehicle 30 along the length L. Figure 20 Movement in the width direction W. The back of the lower shell 64 also has an operating groove 646 communicating with the receiving space 63. The upper shell 62 covers the lower shell 64, and a through hole 622 is formed between the upper shell 62 and the lower shell 64, connecting the receiving space 63 and the slot 642 (see...). Figure 22 ).

[0195] The engaging member 66 is generally square in shape (e.g., but not limited to, rectangular), and includes an integrally formed latch 662 and an operating part 664. The latch 662 is generally square and matches the shape of the through hole 622. One end of the latch 662 has a guide bevel 6622 that contacts the engaging rod 343. The engaging member 66 is slidable within the receiving space 63 of the housing, and the latch 662 can pass through the through hole 622 and enter the slot 642. The thickness of the operating part 664 is greater than the thickness of the latch 662, and the operating part 664 is movable in the operating slot 646, thereby causing the latch 662 to move out of the through hole 622 or retract into the receiving space 63. In other words, the operating part 664 can move the latch 662 between a first position inserted into the slot 642 and a second position withdrawn from the slot 642. A receiving cavity 6642 is also provided on the side of the operating part 664 away from the latch 662 (see...). Figure 22 In this embodiment, as Figure 20 As shown, the slot 642 is located inside the short rod 42, and the operating part 664 is located outside the short rod 42, so that the design of the locking structure 60 is more reasonable and the unlocking operation is more convenient.

[0196] See Figure 22In this embodiment, the second elastic element 68 is a compression spring. The second elastic element 68 is partially housed in the receiving cavity 6642. Both ends of the second elastic element 68 abut against the inner wall of the lower housing 64 and the inner wall of the operating part 664 located at one end of the receiving cavity 6642, respectively. The second elastic element 68 consistently has a tendency to move the engaging member 66 towards the slot 642. In other words, in the initial state, the second elastic element 68 holds the latch 662 in a first position extending into the slot 642.

[0197] Please see Figures 21-23 The working principle of the locking mechanism 60 is briefly described below.

[0198] In such Figure 18 In the initial state shown, under the action of the second elastic member 68, the latch 662 of the engaging member 66 protrudes from the through hole 622 and is in the first position extending into the slot 642.

[0199] When it is necessary to fix the carrier 30 to the support frame 40, the two engaging rods 343 of the carrier 30 can be respectively engaged into the two slots 642 of the two engaging mechanisms 60. During the process of the engaging rods 343 entering the slots 642, the engaging rods 343 will first contact the latch 662. Under the action of the guide slope 6622 of the latch 662, the engaging rods 343 can push the latch 662 into the through hole 622, thus allowing the engaging rods 343 to smoothly enter the slots 642. After the engaging rods 343 pass the latch 662 and enter the slots 642, under the action of the second elastic element 68, the latch 662 again passes out of the through hole 622 and extends into the slots 642, abutting against the top of the engaging rods 343. When the engaging mechanism 60 is in this engaged state, under the action of the two side walls of the slots 642, the engaging rods 343 move along... Figure 20 The movement of the intermediate vehicle 30 along its length L is restricted. The guide mechanism 33 located on the engaging rod 343 is positioned exactly within the limiting notch 644, thereby allowing the engaging rod 343 to move along... Figure 20 The movement of the vehicle 30 in the width direction W is restricted. Under the action of the bottom wall of the slot 642 and the latch 662, the engaging rod 343 moves along... Figure 20 The movement of the vehicle in the height direction H is restricted. Ultimately, as... Figure 20 As shown, the carrier 30 is securely mounted on the support frame 40.

[0200] In this embodiment, by employing a structure that combines a limiting notch 644 with a guiding mechanism 33, and a slot 642 with a locking rod 343, the carrier 30 can be stably fixed on the support frame 40, preventing it from swaying as the frame 20 moves. Furthermore, in some embodiments, the slot 642 is positioned inside the short rod 42, making the distance between the two locking rods 343 of the carrier 30 smaller than the distance between the two short rods 42 of the support frame 40. This ensures that the projection of the second support 34 on the ground lies within the projection of the support frame 40 on the ground, making the carrier 30 more stable when placed on the support frame 40, preventing tipping, and ensuring the safety of the pet.

[0201] When it is necessary to remove the carrier 30 from the support frame 40, a force can be applied to the operating part 664 by reaching into the operating slot 646, causing it to move away from the slot 642. The operating part 664 overcomes the elastic force of the second elastic member 68, thereby moving the latch 662 from the first position of extending into the slot 642 to the second position of exiting the slot 642, and finally retracting into the receiving space 63. When the locking mechanism 60 is in the unlocked state, there is no longer an obstruction of the latch 662 above the locking rod 343, so the locking rod 343 can be easily removed from the slot 642, thus separating the carrier 30 from the locking mechanism 60. After the force applied to the operating part 664 is stopped, under the elastic restoring force of the second elastic member 68, the latch 662 passes through the through hole 622 and re-enters the first position of extending into the slot 642.

[0202] It is understandable that the operating groove 646 can also be provided on the upper shell 62. In addition, if the movement of the engaging member 66 is directly controlled by hand, the guide slope 6622 and the second elastic member 68 can also be omitted. If the engaging rod 343 is not provided with a guide mechanism 33, the limiting notch 644 can also be omitted.

[0203] In another embodiment, such as Figure 24 As shown, located Figure 21 The width of the slot 642 of the engaging mechanism 60 on at least one side of the short rod 42 is greater than the diameter of the engaging rod 343, so that when the engaging rod 343 is located within the slot 642, the engaging rod 343 can move to a certain extent within the slot 642 along the length direction of the carrier 30. Specifically, the engaging rod 343 has a third position within the slot 642 near the latch 662 (e.g., Figure 24 ) and the fourth position away from the tongue 662 (such as Figure 25The third and fourth positions can be the left and right ends of the slot 642. When the engaging rod 343 is in the third position, the latch 662 of the engaging member 66 is directly above the engaging rod 343, thus fixing the engaging rod 343 in the slot 642; when the engaging rod 343 is in the fourth position, the engaging rod 343 separates from the latch 662, i.e., it is no longer blocked by the latch 662. Additionally, when the latch 662 of the engaging member 66 is in the fourth position... Figure 24 and Figure 25 In the first position shown, the distance H1 between the latch 662 and one side wall of the slot 642 is greater than the dimension (more specifically, the diameter) D of the engaging rod 343. It can be understood that if the cross-section of the engaging rod 343 is non-circular, such as square or triangular, the distance H1 between the latch 662 and one side wall of the slot 642 is greater than the dimension (more specifically, the width) D of the engaging rod 343.

[0204] When the carrier 30 is normally fixed on the support frame 40, since the distance between the two locking rods 343 of the carrier 30 matches the distance between the two slots 642 of the locking mechanisms 60 on both sides, the locking rods 343 on both sides are respectively located in the third position within the slots 642 (e.g., Figure 24 At this point, the latch 662 of the engaging component 66 is positioned directly above the engaging rod 343, thus securing the engaging rods 343 on both sides within the slot 642. When it is necessary to remove the carrier 30 from the support frame 40, only the latch can be unlocked. Figure 21 The locking mechanism 60 located on the right short rod 42 is shown, without needing to unlock the locking mechanism 60 located on the left short rod 42. When the right locking rod 343 disengages from the right slot 642, the vehicle 30 can be dragged directly to the right, causing the left locking rod 343 to move within the left slot 642. When the left locking rod 343 moves from the third position to the fourth position within the slot 642, the locking rod 343 separates from the latch 662. Since the distance H1 between the latch 662 and the side wall of the slot 642 is greater than the diameter D of the locking rod 343, the locking rod 343 is no longer obstructed by the latch 662. Therefore, the locking rod 343 can be easily removed from the slot 642, thus separating the vehicle 30 from the locking mechanism 60. The above embodiment omits the step of unlocking the locking mechanism 60 located on the left short rod 42, making the entire operation more convenient and faster. It is understood that in other embodiments, the locking mechanism 60 located on the left short rod 42... Figure 21 The width of the slots 642 of the locking mechanisms 60 on the left and right sides (at N2 and N1) can also be greater than the diameter of the locking rod 343. At this time, it is only necessary to unlock the locking mechanism 60 on either the left or right side to separate the vehicle 30 from the locking mechanism 60, so that the user can easily remove the vehicle 30 from the frame 20 from either the left or right side.

[0205] Please see Figures 26-27According to an embodiment of this application, a wheeled mobile device 100 and Figures 1-3 The wheeled mobile devices 100 shown have a generally similar structure, including wheel assembly 10, frame 20, carrier (not shown), support frame 40, and first locking mechanism 50. The difference lies in the structure of the frame 20.

[0206] like Figures 28-30 As shown, wheel assembly 10 includes a front wheel assembly 12 and a rear wheel assembly 14. Frame 20 includes a front link 22 connected to the front wheel assembly 12 and a rear link 24 connected to the rear wheel assembly 14. The two front links 22 are located outside the two rear links 24, meaning the distance between the two front links 22 is greater than the distance between the two rear links 24. Frame 20 also includes a pivot 27. The middle portion of the front link 22 and the middle portion of the rear link 24 are pivotally connected to each other via the pivot 27 (here, "middle portion" refers to any position between the two ends, not a strictly defined midpoint).

[0207] like Figure 31 and Figure 32 As shown, the pivot seat 27 includes a first seat body 272 and a second seat body 274. The first seat body 272 and the second seat body 274 have identical structures but face opposite directions. A locking groove 276 is provided on either the first seat body 272 or the second seat body 274. The front rod 22 and the rear rod 24 can be respectively locked into the corresponding locking grooves 276 of the first seat body 272 and the second seat body 274, thereby fixing the first seat body 272 to the front rod 22 and fixing the second seat body 274 to the rear rod 24. Both the first seat body 272 and the second seat body 274 have shaft holes, and a pin (not shown) passes through these shaft holes, allowing the first seat body 272 and the second seat body 274 to rotate relative to each other. Figure 30 As shown, by setting the first seat 272 and the second seat 274, the lateral distance between the front rod 22 and the rear rod 24 is increased. When the wheeled moving device 100 moves from... Figure 26 The unfolded state shown Figure 33 When the folded state is switched as shown, the front rod 22 and the rear rod 24 fold from a crossed state to an approximately parallel state. Sufficient lateral distance between the front rod 22 and the rear rod 24 prevents accidental pinching of the user's fingers, thereby further improving the product's safety. It is understood that the structures of the first seat 272 and the second seat 274 may also be different. Furthermore, in other embodiments, the pivot seat 27 may also be a single element, i.e., the first seat 272 and the second seat 274 are integrally formed. In this case, the front rod 22 and the rear rod 24 are pivotally connected to the pivot seat 27 via pins or the like.

[0208] The support frame 40 is pivotally connected to the front member 22 and the rear member 24, respectively. A first locking mechanism 50 is disposed between the frame 20 and the support frame 40. Specifically, the first locking mechanism 50 is disposed on the front member 22. In this embodiment, the first locking mechanism 50 and... Figure 4 , Figure 5 The structure of the first locking mechanism 50 shown is quite similar, so it will not be described in detail again. Figures 27-28 As shown, in this embodiment, the frame 20 further includes a first transition member 26 and a second transition member 28 fixed to the support frame 40. One end of the first transition member 26 is inserted into and fixed to the crossbar 43, and the other end of the first transition member 26 is pivotally connected to the rear rod 24. One end of the second transition member 28 is fixed to the long rod 44 by screws or welding, and the other end of the second transition member 28 is pivotally connected to the first locking mechanism 50.

[0209] like Figure 30 and Figure 33 As shown, since the first locking mechanism 50 is located on the outermost side of the frame 20, when the unlocking member 54 is operated to allow the wheeled moving device 100 to move from... Figure 26 The unfolded state shown Figure 33 When switching between the folded and retracted states, it can prevent fingers from being pinched due to insufficient clearance between the unlocking member 54 and the rear lever 24. It also prevents fingers from being pinched when the first locking mechanism 50 is located inside the frame 20 and the rear reinforcing lever 25 is too close together.

[0210] To control the direction of travel of the wheeled mobile device 100 and to fix the wheeled mobile device 100 in a specific position, a braking mechanism is also provided on the wheeled mobile device 100 in this embodiment. This braking mechanism can be provided separately on the front wheel assembly 12, separately on the rear wheel assembly 14, or simultaneously on both the front wheel assembly 12 and the rear wheel assembly 14. The following description uses the example of the braking mechanism being provided on the front wheel assembly 12.

[0211] Please see Figures 34-35 The wheel assembly 10 includes an adapter 11, a wheel seat 13, a caster 15, and a brake assembly 17. The adapter 11 is fixed to the end of the front rod 22. The wheel seat 13 is pivotally connected to the adapter 11. The caster 15 is pivotally connected to the wheel seat 13. The brake assembly 17 can simultaneously restrict the rotation of the wheel seat 13 relative to the adapter 11 and restrict the rotation of the caster 15 relative to the wheel seat 13, thereby achieving braking and directional locking of the caster 15.

[0212] Please see Figures 36-37 The wheel assembly 10 also includes a universal joint 112 fixed to the adapter 11. The wheel seat 13 is fitted onto the universal joint 112 and can rotate relative to it, allowing the caster 15 to rotate in all directions. A toothed disc 114 (see [reference]) is fixed to the end of the universal joint 112 by screws. Figure 42The rotation of the gear 114 relative to the axis of the universal joint 112 is restricted. The top of the wheel seat 13 is provided with adjacent first pivot holes 132 and second pivot holes 134. The bottom of the wheel seat 13 is also provided with a third pivot hole 136. The caster 15 is pivotally connected to the third pivot hole 136 via a pin 152 and a fastener 154, so that the caster 15 can roll on the ground.

[0213] The brake assembly 17 includes a pedal 172 and a brake spring 174. The pedal 172 is pivotally connected to the first pivot hole 132 of the wheel seat 13 via a pin 1772. The brake spring 174 is pivotally connected to the second pivot hole 134 of the wheel seat 13 via a pin 1742.

[0214] like Figure 38 and Figure 39 As shown, the brake spring 174 is generally arc-shaped and includes a body portion 1744, a pivot portion 1746 located in the middle of the body portion 1744, and locking teeth 1743 and brake portions 1745 located at both ends of the body portion 1744. The pin 1742 passes through the pivot portion 1746 and engages with the second pivot hole 134, allowing the brake spring 174 to rotate at a certain angle relative to the wheel seat 13. The locking teeth 1743 can engage with the gear disc 114 on the adapter seat 11, thereby fixing the wheel seat 13 to the adapter seat 11. When the locking teeth 1743 disengage from the gear disc 114, the wheel seat 13 can rotate freely relative to the adapter seat 11. The brake portion 1745 abuts against the caster 15, thereby creating a braking effect. In some embodiments, the side of the brake portion 1745 facing the caster 15 may also have multiple protrusions 1748. The protrusion 1748 can engage with the grooves on the surface of the caster 15, thereby further enhancing the braking effect. A return spring 1747, which curves upwards, is also formed in the center of the brake spring 174. The return spring 1747 always abuts against the inner wall of the wheel seat 13.

[0215] The pedal 172 can rotate at a certain angle relative to the wheel seat 13, thus having Figure 34 , Figure 35 The horizontal state shown and Figure 40 , Figure 41 The tilted state shown. Figure 36 As shown, when pedal 172 is in a horizontal position, pedal 172 is in contact with brake spring 174. Brake spring 174 is in... Figure 36 The first state is shown. At this time, the locking teeth 1743 of the brake spring 174 are not engaged with the gear disc 114, and the brake part 1745 of the brake spring 174 is separated from the caster 15. In this state, the wheel seat 13 can rotate freely relative to the adapter seat 11, and the caster 15 can rotate freely forward and backward relative to the wheel seat 13.

[0216] When braking is required, you can press the pedal 172 with your foot to move the pedal 172 from... Figure 35 The horizontal state shown has switched to Figure 41 The tilted state shown. Figure 42 As shown, during this process, the pedal 172 gradually applies a clockwise rotational force to the brake spring 174 around the second pivot hole 134, causing the locking teeth 1743 to rise and approach the gear disc 114, while the brake part 1745 descends and approaches the caster wheel 15. When the pedal 172 reaches... Figure 41 When tilted as shown, brake pad 174 is in Figure 42 The second state is shown. At this state, the locking tooth 1743 engages with the gear disc 114, and the brake part 1745 abuts against the caster 15. The brake spring 174 abuts against the pedal 172, keeping the pedal 172 in an inclined position. When the locking tooth 1743 engages with the gear disc 114, the wheel seat 13 and the adapter seat 11 are fixed and cannot rotate freely, thus locking the rotation direction of the wheel seat 13 relative to the adapter seat 11, achieving rotational orientation of the caster 15. When the brake part 1745 abuts against the caster 15, the friction between them also causes the caster 15 to decelerate and eventually stop rotating, locking the rotation of the caster 15, thus achieving the dual effects of rotational orientation and braking. At this state, the wheeled mobile device 100 can stably remain on flat ground or a slope, facilitating the transfer and placement of animals on the vehicle 30 by medical personnel.

[0217] When the wheeled mobility device 100 no longer needs to stop, the pedal 172 can be lifted by foot or the other end of the pedal 172 can be stepped on to move the pedal 172 from its position. Figure 41 The tilt state shown has been switched to Figure 35 As shown in the horizontal position, brake spring 174 then returns to its original position. Figure 36 The first state is shown. When the pedal 172 stops applying force to the brake spring 174, under the action of the reset spring 1747, the brake spring 174 will rotate counterclockwise around the second pivot hole 134, thereby causing the locking teeth 1743 of the brake spring 174 to disengage from the gear disc 114, and the brake part 1745 of the brake spring 174 to no longer abut against the caster 15. At this time, the wheel seat 13 can rotate freely relative to the adapter seat 11, and the caster 15 can rotate freely forward and backward relative to the wheel seat 13.

[0218] Please see Figure 44 According to another embodiment of this application, the vehicle 30 and Figure 10 The vehicle 30 shown is largely the same, including a first support 32 and a second support 34 (see Figure 48 ), and a support plate 36 located between the first bracket 32 ​​and the second bracket 34. The difference lies in, Figure 44 The vehicle 30 shown also includes a carrying cloth 37 covering the support plate 36.

[0219] Please see Figure 45The carrying cloth 37 includes a main body 372 and at least one handle 374 disposed on the edge of the main body 372. The length of the main body 372 is approximately the same as the length of the support plate, and the width of the main body 372 is greater than the width of the support plate 36. The material of the main body 372 can be canvas or the like. Two handles 374 are provided on each of the two long sides of the main body 372 to facilitate the user to apply force with both hands simultaneously. When it is necessary to move a large pet onto or off the support plate 36 of the vehicle 30, two users can stand on either side of the carrying cloth 37, each holding one handle 374 with both hands simultaneously, so that the pet can be easily lifted and transported to the designated location. In addition, when the carrying cloth 37 is disposed on the support plate 36, the four handles 374 can be folded up or fixed to the bottom of the support plate 36 by Velcro or the like, so as to prevent the carrying cloth 37 from sliding freely relative to the support plate 36 and improve the appearance of the vehicle 30.

[0220] In this embodiment, the carrying fabric 37 and the support plate 36 are independently provided, allowing the carrying fabric 37 to be laid freely on the support plate 36. Alternatively, the carrying fabric 37 can be fixed to the support plate 36 to prevent it from slipping off. For example, in one embodiment, the left and right ends of the carrying fabric 37 are provided with pocket-like fixing parts 376. The fixing parts 376 can be fitted onto the edge of the support plate, thereby achieving quick fixing of the carrying fabric 37 to the support plate. Of course, in other embodiments, Velcro-like fixing devices can also be provided on the carrying fabric 37 and the support plate 36 to facilitate quick fixing. Furthermore, in other embodiments, a base fabric can be covered on the support plate 36, and the carrying fabric 37 is placed on the base fabric.

[0221] Please see Figure 46 In another embodiment, the four handles 374 are not located on opposite sides of the main body 372, but are located at the four corners of the main body 372.

[0222] Please see Figure 47 According to another embodiment of this application, the vehicle 30 and Figure 44 The vehicle 30 shown is largely the same, including a first support 32 and a second support 34 (see Figure 35The carrier 30 includes a support plate 36 located between the first support 32 and the second support 34. A base fabric 39 is also covered on the support plate 36. The difference lies in that, to securely restrain the pet to the carrier 30, the carrier 30 also includes a restraint device. In this embodiment, the restraint device includes restraint straps 38 disposed on the base fabric 39 or the support plate 36. The restraint device may also include one, two, or more restraint straps 38. In this embodiment, the restraint device includes three restraint straps 38, which are parallel and spaced apart, and extend along the width direction of the support plate 36. It is understood that in another embodiment, the carrier 30 also includes a carrying cloth or protective cover (not shown) covering the base fabric 39, with the restraint device disposed on the carrying cloth.

[0223] like Figure 48 As shown, both ends of each restraint strap 38 pass through buckles 362 mounted on the base fabric 39 or support plate 36, thereby adjusting the length of the restraint strap 38 on the front of the base fabric 39 to accommodate pets of different sizes. In other embodiments, the buckles 362 may also be mounted on the support device or on the carrying fabric. The buckles 362 may be D-rings, harness buckles, locking rings, etc. In one embodiment, the locking ring is a double ring, and the free end of the restraint strap 38 can pass through one ring, wrap around the other ring, and then exit. The length of the restraint strap 38 can be adjusted by pulling the free end of the restraint strap 38, which is simple to operate. In addition, the double-ring structure can increase the connection strength.

[0224] Once the pet is placed on the base 39, the lengths of the three restraint straps 38 (left, center, and right) can be adjusted to securely fasten the pet to the support plate 36, preventing the pet from moving around and falling out of the vehicle 30. Then, the vehicle 30 can be lifted from the front and back to move the pet to the designated location.

[0225] Please see Figure 49 According to another embodiment of this application, the wheeled mobile device 200 includes a frame, a mounting bracket 70, and a carrier 30. The structure of the carrier 30 in this embodiment is the same as that in the aforementioned embodiment. Figure 10 The structure of the vehicle 30 is the same as that of the other vehicle, and will not be described in detail here. The frame of this embodiment has a structure similar to a trolley, including a front rod 22, a rear rod 24, an upper rod 21, a handlebar 29, and a wheel assembly 10. A mounting bracket 70 is installed on the frame and can lock and unlock the vehicle 30. By operating the mounting bracket 70, the user can easily and securely install the vehicle 30 onto the frame or remove it from it. The vehicle 30 of the above embodiment has multiple usage modes, and can be used with mobile supports (e.g., Figure 17 The wheeled mobility device shown can be used in conjunction with a stroller, greatly satisfying the diverse needs of transporting different pets and having a wide range of applications.

[0226] Please see Figures 50-53 According to one embodiment of this application, a carrier 1000 includes a support device 300, a base fabric 700, a mesh fabric 800, and a fastener assembly. Any two of the base fabric 700, mesh fabric 800, and support device 300 are detachably connected by the fastener assembly. The base fabric 700 is disposed on the support device 300, and the mesh fabric 800 is disposed on the base fabric 700. A receiving space is formed between the base fabric 700 and the mesh fabric 800 for accommodating pets or other items.

[0227] Please see Figure 51 and Figure 52 The support device 300 includes a first support 32, a second support 34, and a support plate 36 located between the first support 32 and the second support 34. Furthermore, the support plate 36 may be disposed on the first support 32 and / or the second support 34.

[0228] The first support 32 is generally a ring-shaped frame (e.g., but not limited to, a rectangular frame), comprising two long sides 321 and two short sides 323 connected to the two long sides 321. Two parallel support rods 322 are provided between the two long sides 321 of the first support 32. Each support rod 322 is also provided with two fixing seats 324. The second support 34 has a shape generally similar to the first support 32, but is smaller in size. The second support 34 includes two long sides C341 and two short sides C343. The two long sides C341 are fixedly connected to the two support rods 322 via the four fixing seats 324. A fixing ring 342 is also provided at the middle of each of the two long sides C341.

[0229] Two guide mechanisms 33 are respectively disposed on the second bracket 34 and / or the support plate 36. Specifically, each guide mechanism 33 is disposed at the middle of the short side C343 of the second bracket 34. It is understood that in other embodiments, the second bracket 34 may be omitted.

[0230] The support plate 36 is generally a square flat plate (e.g., but not limited to, a rectangular flat plate), which is fixed to the two support rods 322 by fasteners such as screws. The support plate 36 can be made of a rigid material (e.g., a metal plate, a plastic plate) and / or a flexible material (e.g., canvas), or a rigid material covered by a flexible material, depending on the actual application requirements. In this embodiment, the support plate 36 can be selected from flexible fabric covering a metal plate, but is not limited thereto.

[0231] The base fabric 700 covers the support plate 36 and is fixed to the support plate 36. The base fabric 700 includes multiple fixing mechanisms that are fixedly connected to the support plate 36. Specifically, as... Figure 51 and Figure 53As shown, the base fabric 700 includes a main body 710. The main body 710 is generally square (e.g., but not limited to, rectangular), and its area and shape are similar to those of the support plate 36. Multiple hook and loop fasteners 7102 are provided along the edges of the main body 710, and multiple hook and loop fasteners 363 are correspondingly provided on the bearing surface of the support plate 36. Through the adhesive action of the hook and loop fasteners 7102 and 363, the base fabric 700 can be securely attached to the support plate 36. It is understood that in other embodiments, the hook and loop fasteners 7102 and 363 can also be replaced by hooks and loops that cooperate with each other, straps and loops that cooperate with each other, snaps that cooperate with each other, strap buckles that cooperate with each other, or similar structures. Of course, the base fabric 700 and the support plate 36 can also be positioned by sewing.

[0232] like Figure 52 and Figure 53 As shown, the base fabric 700 also includes two first fixing parts 720. The two first fixing parts 720 are respectively disposed at both ends of the main body 710, i.e., at the two short sides of the main body 710. Each first fixing part 720 has a pocket-like structure, which can be fitted onto one end of the support plate 36, i.e., onto the short side of the support plate 36. It is understood that in other embodiments, hooks and fixing rings, straps and positioning rings, Velcro, or snaps that cooperate with each other can also be provided on the first fixing part 720 and the support plate 36 to enhance their bonding strength. Of course, the first fixing part 720 and the support plate 36 can also be positioned by sewing.

[0233] like Figure 51 and Figure 53 As shown, the base fabric 700 also includes two second fixing parts 730. The two second fixing parts 730 are respectively disposed on both sides of the main body 710, that is, at the two long sides of the main body 710. The second fixing parts 730 can wrap around and fix to the two long sides 321 of the first bracket 32. Specifically, as... Figure 53 and Figure 54 As shown, the second fixing part 730 is provided with Velcro 7302. Velcro 361 is also provided on the bottom edge of the support plate 36. After the second fixing part 730 passes around the long side 321 of the first bracket 32, it is fixed to the long side 321 by the adhesive action of the Velcro 7302 and the Velcro 361. It can be understood that in other embodiments, the Velcro 7302 and 361 can also be replaced by hooks and retaining rings that cooperate with each other, straps and positioning rings that cooperate with each other, snaps that cooperate with each other, strap buckles, or similar structures. Of course, the second fixing part 730 and the support plate 36 can also be positioned by sewing.

[0234] like Figure 55As shown, in some embodiments, the base fabric 700 further includes four fixing straps 770 located at the four corners of the main body 710. The connection positions of each fixing strap 770 to the main body 710 are close to the four corners of the main body 710, which is within the protection scope of this application. In some embodiments, the connection positions of each fixing strap 770 to the base fabric 700 are on the second fixing portion 730. In some embodiments, the connection positions of each fixing strap 770 to the base fabric 700 are on the main body 710.

[0235] Each fixing band 770 is provided with a seventh fixing part 774. The support plate 36 is provided with a plurality of positioning pieces 362 and positioning rings 364 connected to the positioning pieces 362. The positioning pieces 362 can be fixed to the support plate 36, for example, by sewing. More specifically, the positioning pieces 362 are fixed to the bottom surface of the support plate 36. The band guiding mechanism 33 corresponds to the middle position of the bottom surface of the support plate 36, and is located near the short side of the support plate 36. The structure of the band guiding mechanism 33 can be found in this application. Figure 12 , Figures 14 to 16 More specifically, the guide mechanism 33 includes a bottom shell 331 and a top shell 332. The bottom shell 331 is fixed to the support plate 36, and the top shell 332 is fixed to the second bracket 34. Two positioning pieces 362 are located on both sides of the guide mechanism 33. That is, positioning pieces 362 are arranged on both sides of each guide mechanism 33. Two positioning rings 364 are movably disposed at the ends of the two positioning pieces 362. More specifically, the two positioning rings 364 are arranged at the ends of the two positioning pieces 362 that are far apart from each other. In this embodiment, the positioning rings 364 can be double rings, and the seventh fixing part 774 is a Velcro fastener. The double rings of the positioning ring 361 include a first ring and a second ring. After the fixing strap 770 passes through the first ring, it wraps around the second ring, then passes out from the first ring in the opposite direction, and then is fixed to itself by the Velcro fastener of the seventh fixing part 774 (see...). Figure 55 The Velcro fasteners allow the base fabric 700 to be more securely fixed to the support plate 36. It is understood that the seventh fixing part 774 may also include interlocking snaps, hooks, and rings.

[0236] like Figure 53 and Figure 55As shown, the base fabric 700 also includes a plurality of first connecting straps 740 extending outward from the edge of the main body 710. The fastener assembly includes a first fastener assembly 900. Specifically, one end of the plurality of first connecting straps 740 is fixed to the four corners of the main body 710 by means of sewing or the like, and the other end of the plurality of first connecting straps 740 extends outward. The connection positions of each first connecting strap 740 to the base fabric 700 near the four corners of the main body 710 are within the protection scope of this application. In some embodiments, the connection positions of each first connecting strap 740 to the base fabric 700 are on the second fixing part 730. In some embodiments, the connection positions of each first connecting strap 740 to the base fabric 700 are on the main body 710.

[0237] Each first connecting strap 740 is used to connect with a corresponding first fastener assembly 900. In this embodiment, each first connecting strap 740 is respectively disposed at one end of the fixing strap 770, thereby improving the connection strength of the first connecting strap 740. Specifically, in some embodiments, each first connecting strap 740 and the corresponding fixing strap 770 can be integrally formed, with its middle section sewn to the four corners of the main body 710. In other embodiments, the fixing strap 770 can be formed by extending outward from the edge of the main body 710 (the fixing strap 770 extending outward from the edge of the second fixing part 730 is also within the scope of protection of this application), and the first connecting strap 740 is sewn to the position of the main body 710 or the second fixing part 730 corresponding to the fixing strap 770, and extends in a direction opposite to the extension direction of the fixing strap 770.

[0238] like Figure 56 As shown, the mesh fabric 800 is generally square in shape (e.g., but not limited to, rectangular). The two long sides of the mesh fabric 800 are detachably connected to two second fixing parts 730 located on both sides of the base fabric 700 via a first fastener assembly 900, facilitating the insertion of items into the storage space. The two short sides of the mesh fabric 800 are also provided with mesh fixing parts 820. The shape of the mesh fixing parts 820 matches the shape of the two short sides of the support plate 36 and has a pocket-like structure, allowing them to be fitted onto the corresponding ends of the short sides of the support plate 36, for example, onto the first fixing part 720 of the base fabric 700.

[0239] The mesh fabric 800 is also provided with at least one adjusting strap 860. In this embodiment, there are three adjusting straps 860. The three adjusting straps 860 are arranged in parallel and extend along the width direction of the mesh fabric 800. It is understood that in other embodiments, the number of adjusting straps 860 may be one, two, four or more. Each adjusting strap 860 includes a fixed section 8602 and a separating section 8604 connected to each other. The fixed section 8602 is fixed to the mesh fabric 800 by means of sewing or the like, while the separating section 8604 is not fixed to the mesh fabric 800, that is, it is in a separated state. A carrying strap buckle 8601 is also fixed to the end of the fixed section 8602, and the end 8603 of the separating section 8604 passes through the carrying strap buckle 8601 and can slide back and forth relative to the carrying strap buckle 8601. The available length of the separating section 8604 can be adjusted by the carrying strap buckle 8601, thereby adjusting the size of the accommodating space formed by the bottom fabric 700 and the mesh fabric 800 to match the size of the pet being carried.

[0240] The edge of the mesh fabric 800 is also provided with a plurality of outwardly extending second connecting straps 840. In this embodiment, each second connecting strap 840 is respectively disposed at one end of the adjusting strap 860. Specifically, in some embodiments, each second connecting strap 840 and the corresponding adjusting strap 860 can be integrally formed, that is, each second connecting strap 840 is formed by extending outward from the edge of the fixed section 8602 and the separating section 8604 respectively. In other embodiments, the second connecting strap 840 can also be sewn to the edge of the fixed section 8602 and the separating section 8604 and extend in a direction away from the mesh fabric 800. Since the second connecting strap 840 is not directly connected to the mesh fabric 800, but is connected to the adjusting strap 860, when the second connecting strap 840 is subjected to tension, the tension can be transferred to the adjusting strap 860 to disperse the force on the mesh fabric 800 and prevent the mesh fabric 800 from deforming or tearing due to excessive force.

[0241] Please see Figure 57 One end of the first fastener assembly 900 is fixedly connected to the base fabric 700 via the first connecting strap 740, and the other end of the first fastener assembly 900 is movably connected to the mesh fabric 800 via the second connecting strap 840.

[0242] For details, please refer to Figures 58-61The first fastener assembly 900 includes a fastener body 920 and a locking element 940. The fastener body 920 is shaped like a D-ring, and has a first connecting hole 922 and a second connecting hole 924 arranged side by side. Both the first connecting hole 922 and the second connecting hole 924 are elongated holes, and are separated by a support rod 926. The first connecting hole 922 is a fully enclosed hole, and one end of the first connecting band 840 has a first collar 842 that passes through the first connecting hole 922 and is fixedly connected to the fastener body 920. The edge of the second connecting hole 924 also has a channel 923 communicating with the outside. One end of the second connecting band 840 has a second collar 842 that passes through the channel 923 to enter the second connecting hole 924. When the second loop 842 enters the second connecting hole 924, the second connecting strap 840 connects with the fastener body 920, thus fixing the mesh fabric 800 to the base fabric 700; when the second loop 842 passes through the channel 923 and separates from the second connecting hole 924, the second connecting strap 840 separates from the fastener body 920, thus separating the mesh fabric 800 from the base fabric 700.

[0243] In some embodiments, the edge of the first connecting hole 922 of the buckle body 920 may also have a channel communicating with the outside, and this channel may be closed or opened by a corresponding locking member 940, thereby allowing the second ring 842 to enter and lock into the buckle body 920 or allowing the second ring 842 to leave the buckle body 920. In some embodiments, the buckle body 920 may be S-shaped.

[0244] like Figure 59 As shown, the locking member 940 is approximately square-shaped sleeve. A receiving groove 942 is provided inside the locking member 940 for the support rod 926 to pass through. The locking member 940 is slidably mounted on the support rod 926 and can move between a first position of closing the channel 923 and a second position of opening the channel 923.

[0245] Please see Figure 59 The locking element 940 is generally U-shaped. The locking element 940 includes two opposing sidewalls 9401 and 9402, at least one of which may have a retaining plate 9403 protruding into the U-shaped structure at its end. The sidewalls 9401 and 9402 can elastically open to allow the support rod 926 to enter or exit the receiving groove 942. When the support rod 926 enters the receiving groove 942, the sidewalls 9401 and 9402 return to their original position, and the retaining plate 9403 abuts against the support rod 926, preventing the support rod 926 from accidentally disengaging from the receiving groove 942.

[0246] Please see Figure 59 and Figure 60In this embodiment, the first fastener assembly 900 further includes an elastic element 960 located within the receiving groove 942. The elastic element 960 is used to drive the locking element 940 to tend to move towards the first position. In this embodiment, the elastic element 960 is a compression spring, and the support rod 926 is also provided with an upwardly protruding stop portion 9262. One end of the spring abuts against the stop portion 9262, and the other end of the spring abuts against the inner wall of the receiving groove 942. Therefore, under normal conditions, the locking element 940 will remain in the first position under the action of the spring. Figure 58 The first position is shown. In this position, the locking member 940 closes the channel 923, preventing the second loop 842 of the second connecting band 840 from passing through the channel 923 and entering the second connecting hole 924, or from passing out of the channel 923 and separating from the second connecting hole 924. Furthermore, the locking member 940 also has an outwardly protruding operating part 944 at the end away from the channel 923.

[0247] Please refer to it again. Figure 50 When using the aforementioned carrier 1000 to transport a pet, the pet can first be placed on the base fabric 700 supported by the support plate 36, and then the mesh fabric 800 can be placed over the base fabric 700. Next, the user applies force to the operating part 944 of the locking member 940 to compress the elastic member 960 and slide the locking member 940 from the first position to the second position. Figure 61 As shown, when the locking member 940 slides to the second position, the channel 923 is in the open state. At this time, the second loop 842 of the second connecting strap 840 can pass through the channel 923 and enter the second connecting hole 924. After stopping the force applied to the operating part 944, under the action of the elastic force of the elastic member 960, the locking member 940 will return from the second position to the first position, thereby closing the channel 923. At this time, the second loop 842 cannot disengage from the second connecting hole 924, thus achieving the fixation of the mesh fabric 800 and the bottom fabric 700. Next, the length of the adjusting strap 860 can be adjusted to adjust the size of the accommodating space formed by the bottom fabric 700 and the mesh fabric 800, so that it matches the size of the pet being loaded. After the pet is transported to the designated location, the user can apply force to the operating part 944 of the locking member 940 again to overcome the elastic force of the elastic member 960 and slide the locking member 940 from the first position to the second position. When the locking member 940 separates from the channel 923, the channel 923 is in the open state. At this point, the second loop 842 of the second connecting strap 840 can be passed through the channel 923 and separated from the second connecting hole 924, thereby separating the mesh fabric 800 from the base fabric 700. The pet can then be easily removed from the carrier 100.

[0248] The aforementioned carrier 100 includes a buckle body 920 with a channel 923 and a locking member 940 that can selectively open or close the channel. By simply operating the locking member 940, the first connecting strap 740 and the second connecting strap 840 can be quickly connected, thereby facilitating the connection, fixation and disassembly of the mesh 800, improving the user's operating experience, and enhancing the timeliness of pet rescue, avoiding delays in pet rescue time due to inconvenience in connecting, fixing or disassembling the mesh 800.

[0249] It is understood that in other embodiments, the stop portion 9262 and the operation portion 944 may also be omitted.

[0250] Please see Figure 62 and Figure 63 In another embodiment, the structure of the first fastener assembly 900 is similar to... Figure 58 and Figure 59 The structure of the first fastener assembly 900 shown is basically the same, except that one end of the first fastener assembly 900 is fixedly connected to the second connecting strap 840 of the mesh fabric 800, that is, the second collar 842 passes through and is fixed in the first connecting hole 922. At this time, the other end of the first fastener assembly 900 can also be movably connected to the first connecting strap 740 of the base fabric 700, that is, the first collar 742 passes through the channel 923. In this way, after the mesh fabric 800 is removed from the base fabric 700, the first fastener assembly 900 will be removed along with the mesh fabric 800 and will not hang on the edge of the base fabric 700, making the support device 300 look cleaner and tidier. It can be understood that in other embodiments, the first collar 742 can also be directly set on the base fabric 700, in which case the first connecting strap 740 can also be omitted.

[0251] Please see Figure 64 and Figure 65 The vehicle according to another embodiment of this application is similar to the one described above. Figure 50 The carrier 1000 shown in the embodiment is quite similar, including a support device, a base fabric, a mesh fabric, and a first fastener assembly 900. The difference lies in the structure of the first fastener assembly 900.

[0252] The first fastener assembly 900 includes a fastener body 920 and a locking member 940. The fastener body 920 is shaped like a D-ring, and has a first connecting hole 922 and a second connecting hole 924 arranged side by side. The first connecting hole 922 is a fully enclosed hole, through which the first loop 742 of the first connecting strap 840 passes and is fixedly connected to the fastener body 920. The edge of the second connecting hole 924 also has a channel 923 communicating with the outside. The second loop 842 of the second connecting strap 840 passes through the channel 923 to enter the second connecting hole 924. In this embodiment, the locking member 940 is approximately the shape of a torsion spring, and is made of an elastically deformable material (e.g., metal). Specifically, the locking member 940 includes a first pivot portion 941, a second pivot portion 943, a first force-applying portion 945, a second force-applying portion 947, and a blocking portion 949. The first pivot portion 941 and the second pivot portion 943 are respectively inserted through and pivot to the buckle body 920, and the axes of the first pivot portion 941 and the second pivot portion 943 are offset from each other. The first force-applying portion 945 is connected to the first pivot portion 941, and the second force-applying portion 947 is connected to the second pivot portion 943. The blocking portion 949 is connected between the first force-applying portion 945 and the second force-applying portion 947, and can move between a first position of closing the channel 923 and a second position of opening the channel 923. In the normal state, the locking member 940 remains in the position of... Figure 65 The first position is shown. In this position, the blocking part 949 abuts against the wall of the second connecting hole 924, thereby closing the channel 923.

[0253] When using the first fastener assembly 900, the user can apply force to the first force-applying part 945 and the second force-applying part 947 to rotate the locking member 940 around the first pivot part 941 and the second pivot part 943, thereby moving the blocking part 949 from the first position to the second position away from the channel 923. When the blocking part 949 separates from the channel 923, the channel 923 is in the open state. At this time, the second loop 842 of the second connecting strap 840 can pass through the channel 923 and enter the second connecting hole 924. After stopping the application of force to the first force-applying part 945 and the second force-applying part 947, under the action of the rebound force of the locking member 940 itself, the blocking part 949 will return from the second position to the first position, thereby closing the channel 923. At this time, the second loop 842 cannot disengage from the second connecting hole 924, thus achieving the fixation of the mesh fabric 800 and the base fabric 700.

[0254] It is understood that in other embodiments, the second loop 842 of the second connecting strap 840 passes through the first connecting hole 922 and is fixedly connected to the buckle body 920, at which time the first loop 742 of the first connecting strap 740 passes through the channel 923 to enter the second connecting hole 924.

[0255] Please see Figure 66 and Figure 67 The vehicle according to another embodiment of this application is similar to the one described above. Figure 50 The carrier 1000 shown in the embodiment is quite similar, including a support device, a base fabric, a mesh fabric, and a first fastener assembly 900. The difference lies in the structure of the first fastener assembly 900.

[0256] In this embodiment, the first fastener assembly 900 includes a fastener body 920, and the edge of the fastener body 920 near the channel 923 is provided with a limiting protrusion 927 protruding toward the second connecting hole 924. In this embodiment, the spacing of the channels 923 is small, basically equal to or slightly greater than the thickness of the second connecting strip 840. Of course, the spacing of the channels 923 can also be slightly less than the thickness of the second connecting strip 840. Therefore, when the second loop 842 of the second connecting strip 840 passes through the channel 923 and enters the second connecting hole 924, even without a locking element, the second loop 842 is difficult to pass through the channel 923 and disengage from the second connecting hole 924 under the action of the limiting protrusion 927, thereby also achieving the fixation of the mesh fabric 800 and the base fabric 700. In another embodiment, the longitudinal cross-sectional area of ​​the limiting protrusion 927 can also be gradually increased, thereby further compressing the spacing of the channel 923, which can increase the difficulty for the second ring 842 to pass through the channel 923, thus achieving the fixation of the mesh 800 and the base fabric 700.

[0257] For example, in some embodiments, the channel 923 is, for instance, funnel-shaped, and the dimensions of the channel 923 gradually decrease along the direction in which the second connecting strip 840 enters from the outside, with the narrowest point being, for example, less than the thickness of the second connecting strip 840. In this way, the second collar 842 can be easily guided into the second connecting hole 924 via the channel 923, but cannot easily exit from the second connecting hole 924 through the channel 923.

[0258] It is understood that in other embodiments, the channel 923 and the limiting protrusion 927 may also be provided at the edge of the first connecting hole 922, in which case the second connecting hole 924 is a fully enclosed hole. Additionally, in some embodiments, the channels 923 and the limiting protrusion 927 may be simultaneously provided at the edges of both the first connecting hole 922 and the second connecting hole 924. In some embodiments, the buckle body 920 may be S-shaped.

[0259] Please see Figures 68 to 70 According to another embodiment of this application, the vehicle 1000 is similar to the aforementioned Figure 50 The carrier 1000 shown in the embodiment is quite similar, including a support device, a base fabric, a mesh fabric, and a first fastener assembly 900. The difference lies in the structure of the first fastener assembly 900.

[0260] In this embodiment, the first fastener assembly 900 includes a fastener body 920 and a locking member 940, and the edge of the fastener body 920 near the channel 923 is provided with a limiting protrusion 927 protruding toward the second connecting hole 924. The structure of the locking member 940 in this embodiment is similar to... Figure 64 The locking member 940 in the illustrated embodiment has the same structure, so it will not be described again. In the normal state, the locking member 940 remains in... Figure 68 The first position is shown. In this position, the blocking part 949 engages with the limiting protrusion 927, thereby closing the channel 923. When the user applies force to the first force-applying part 945 and the second force-applying part 947 of the locking member 940, the locking member 940 can rotate about the first pivot part 941 and the second pivot part 943, thereby causing the blocking part 949 to move from the first position abutting against the limiting protrusion 927 towards... Figure 69 The second position movement is shown. When the blocking part 949 separates from the channel 923, the channel 923 is in the open state. At this time, the second loop 842 of the second connecting strap 840 can pass through the channel 923 and enter the second connecting hole 924. After stopping the application of force to the first force-applying part 945 and the second force-applying part 947, under the action of its own spring force, the locking member 940 will cause the blocking part 949 to return from the second position to the first position abutting against the limiting protrusion 927, thereby closing the channel 923. At this time, the second loop 842 cannot disengage from the second connecting hole 924, thus achieving the fixation of the mesh fabric 800 and the base fabric 700.

[0261] It is understood that in other embodiments, the second loop 842 of the second connecting strap 840 passes through the first connecting hole 922 and is fixedly connected to the buckle body 920, at which time the first loop 742 of the first connecting strap 740 passes through the channel 923 to enter the second connecting hole 924.

[0262] Please see Figures 71 to 72 The vehicle according to another embodiment of this application is similar to the one described above. Figure 50 The carrier 1000 shown in the embodiment is quite similar, including a support device, a base fabric, a mesh fabric, and a first fastener assembly 900. The difference lies in the structure of the first fastener assembly 900.

[0263] In this embodiment, the first fastener assembly 900 includes a male fastener 910 and a female fastener 930. The male fastener 910 has a first connecting hole 922, and the female fastener 930 has a second connecting hole 924. The first loop 742 of the first connecting strap 740 passes through the first connecting hole 922 and is fixedly connected to the male fastener 910, thereby fixing the male fastener 910 to the base fabric 700. The second loop 842 of the second connecting strap 840 passes through the second connecting hole 924 and is fixedly connected to the female fastener 930, thereby fixing the female fastener 930 to the mesh fabric 800.

[0264] When in use, the first fastener assembly 900 can be used to fasten the mesh fabric 800 to the base fabric 700 by inserting the male fastener 910 into the female fastener 930, which is very convenient and quick. Similarly, when it is necessary to separate the mesh fabric 800 from the base fabric 700, the elastic arms 9102 on both sides of the male fastener 910 can be pressed to easily remove the male fastener 910 from the female fastener 930.

[0265] It is understood that in other embodiments, the male fastener 910 can also be fixedly connected to the mesh fabric 800 via the second connecting strap 840, in which case the female fastener 930 is fixedly connected to the bottom fabric 700 via the first connecting strap 740.

[0266] Please see Figures 73 to 74 The vehicle according to another embodiment of this application is similar to the one described above. Figure 52 and Figure 62 The carrier 1000 shown in the embodiment is quite similar, including a support device 300, a base fabric 700, a mesh fabric, and a second fastener assembly 900'. The difference lies in... Figure 52 and Figure 55 The positioning ring 364 shown is replaced by a second fastener assembly 900'. In other words, the fastener assembly includes a second fastener assembly 900' disposed between the base fabric 700 and the support device 300.

[0267] The support device 300 includes a first support 32, a second support 34, and a support plate 36 located between the first support 32 and the second support 34.

[0268] The base fabric 700 covers the support plate 36 and is fixed to it. Multiple positioning tabs 362 are provided at both ends of the support plate 36. The positioning tabs 362 can be fixed to the support plate 36, for example, by sewing. More specifically, the positioning tabs 362 are fixed to the bottom surface of the support plate 36. A belt guide mechanism 33 corresponds to the middle position of the bottom surface of the support plate 36 and is located near the short side of the support plate 36. Two positioning tabs 362 are respectively located on both sides of the belt guide mechanism 33. That is, positioning tabs 362 are arranged on both sides of each belt guide mechanism 33. The base fabric 700 includes a main body 710 and four fixing straps 770 located at the four corners of the main body 710. The connection positions of each fixing strap 770 to the main body 710 near the four corners of the main body 710 are within the scope of protection of this application. In some embodiments, the connection positions of each fixing strap 770 to the base fabric 700 are on the second fixing part 730. In some embodiments, the connection points between each fixing strap 770 and the base fabric 700 are on the main body 710.

[0269] The second fastener assembly 900' is disposed between the positioning piece 362 and the fixing strap 770. In this embodiment, Figure 73 The specific structure of the second fastener assembly 900' shown is similar to... Figure 58 The first fastener assembly 900 shown is basically the same, so it will not be described again. One end of the fixing strap 770 has a third ring 7702 that passes through the first connecting hole 922 and is fixedly connected to the fastener body 920. One end of the positioning piece 362 has a fourth ring 3622 that passes through the channel 923 to enter the second connecting hole 924. (The rest of the text appears to be unrelated and likely refers to a different product.) Figure 74 and Figure 75 As shown, when the fourth ring 3622 enters the second connecting hole 924, the positioning piece 362 connects with the fastener body 920, thus fixing the bottom fabric 700 to the support plate 36; when the fourth ring 3622 passes through the channel 923 and separates from the second connecting hole 924, the positioning piece 362 separates from the fastener body 920, thereby separating the bottom fabric 700 from the support plate 36.

[0270] It is understood that in another embodiment, the fourth ring 3622 of the positioning piece 362 passes through the first connecting hole 922 and is fixedly connected to the fastener body 920. At this time, the third ring 7702 of the fixing strap 770 can pass through the channel 923 to enter the second connecting hole 924, thereby also realizing the detachable connection between the bottom fabric 700 and the support plate 36.

[0271] Understandable. Figures 73 to 75 The structure of the second fastener assembly 900' shown can also be replaced with Figure 65 , Figure 67 , Figure 69 and Figure 72 The structure of the first fastener assembly 900 shown.

[0272] Please see Figure 74 and Figure 76In this embodiment, the base fabric 700 includes a plurality of first connecting straps 740 extending outward from the edge of the main body 710. Each first connecting strap 740 is respectively disposed at one end of the fixing strap 770, thereby improving the connection strength of the first connecting straps 740. Specifically, in some embodiments, each first connecting strap 740 and the corresponding fixing strap 770 can be integrally formed, with its middle section sewn to the four corners of the main body 710. The connection positions of each first connecting strap 740 and the base fabric 700 near the four corners of the main body 710 are within the protection scope of this application. In some embodiments, the connection positions of each first connecting strap 740 and the base fabric 700 are on the second fixing part 730. In some embodiments, the connection positions of each first connecting strap 740 and the base fabric 700 are on the main body 710. In other embodiments, the fixing strap 770 may be formed by extending outward from the edge of the main body portion 710 (the fixing strap 770 being formed by extending outward from the edge of the second fixing portion 730 is also within the scope of protection of this application), and the first connecting strap 740 is sewn onto the main body portion 710 at the position corresponding to the fixing strap 770, and extends in a direction opposite to the extension direction of the fixing strap 770.

[0273] See Figure 76 One end of the first connecting strap 740 is provided with a first loop 742 for passing through a channel 923 of the first fastener assembly 900. The side of the first loop 742 facing the base fabric 700 has Velcro 7422, and corresponding Velcro 7704 is provided on the base fabric 700. When the first loop 742 is not connected to the first fastener assembly 900, the adhesive action of the Velcro 7422 and 7704 keeps the first loop 742 in a close fit to the base fabric 700, preventing the first loop 742 from swinging freely and affecting its use, and improving the overall appearance of the product. It is understood that in other embodiments, the Velcro 7422 and 7704 can also be replaced with interlocking snaps, hooks, and rings. Of course, if the seam length between the first connecting strap 740 and the main body 710 is extended, the Velcro 7422 and 7704 can also be omitted.

[0274] Please see Figure 77 and Figure 78 The fastener assembly also includes a third fastener assembly 900 disposed between the mesh fabric 800 and the support device 300. In this embodiment, the middle edge of the support plate 36 extends outward to form a plurality of third connecting straps 760. The edge of the mesh fabric 800 is also provided with a plurality of outwardly extending second connecting straps 840 (see...). Figure 63 ). Figure 77 , Figure 78 The specific structure of the third fastener assembly 900 shown is similar to... Figure 58The first fastener assembly 900 shown is basically the same, so it will not be described again. One end of the third fastener assembly 900” is fixedly connected to the second connecting strap 840 of the mesh fabric 800, and the other end of the third fastener assembly 900” is movably connected to the third connecting strap 760. In this embodiment, the third connecting strap 760 is provided with Velcro 7602 on the side facing the second fixing part 730 of the base fabric 700, and the second fixing part 730 of the base fabric 700 is provided with corresponding Velcro 7304. When the third connecting strap 760 is not connected to the third fastener assembly 900”, that is, when the mesh fabric 800 is not set on the base fabric 700, the adhesive effect of Velcro 7602 and 7304 can keep the third connecting strap 760 in a close fit with the second fixing part 730, preventing the third connecting strap 760 from swinging freely and affecting its use when it is not connected to the third fastener assembly 900”, and improving the overall appearance of the product. It is understood that in other embodiments, the Velcro 7602 and 7304 may be omitted or replaced with interlocking snaps, hooks and rings, etc.

[0275] It is understood that in other embodiments, Figures 77 to 78 The structure of the third fastener assembly 900 shown can also be replaced with Figure 65 , Figure 67 , Figure 69 and Figure 72 The structure of the first fastener assembly 900 shown.

[0276] Figure 79 A perspective view of a wheeled mobility device 100 according to an embodiment of the present invention is shown. The wheeled mobility device 100 may include a wheel assembly 10, a frame 20, a carrier 30, and a second locking mechanism A40. The wheel assembly 10 includes a front wheel assembly 12 and a rear wheel assembly 14. The frame 20 includes a front support frame A22 connected to the front wheel assembly 12 and a rear support frame A24 connected to the rear wheel assembly 14. The front support frame A22 and the rear support frame A24 are pivotally connected to each other so that the frame 20 can be in an unfolded state (see figure). Figures 81 to 83 ) and folded status (see Figure 85 Switching between vehicles. Vehicle 30 is detachably mounted on frame 20 (see...). Figure 86 When the vehicle 30 is mounted on the frame 20, it can prevent the frame 20 from switching to the folded state. The second locking mechanism A40 is provided on the vehicle 30, and when the frame 20 is in the unfolded state, the second locking mechanism A40 can lock the vehicle 30 to the frame 20.

[0277] It should be noted that, depending on the type of vehicle 30, the wheeled mobile device 100 can be considered as different mobility tools. For example, when the vehicle 30 is a stretcher structure, the wheeled mobile device 100 can be considered as a wheeled mobile stretcher, which can be used to transfer animals (such as pets). In the embodiments shown below, the wheeled mobile device 100 is exemplarily described using a wheeled mobile stretcher as an example.

[0278] It should be noted that the aforementioned vehicle 30 can be detached from the frame 20 and used independently; in other words, the vehicle 30 is not necessarily required to be used with the frame 20. For example, the vehicle 30 can be placed on the ground, vehicle seats, or other supports.

[0279] The aforementioned wheeled transfer device 100 allows the frame 20 to freely switch between an extended and folded state via the pivoting of the front support frame A22 and the rear support frame A24. The vehicle 30 is detachably mounted on the frame 20, so that when the wheeled transfer device 100 is not in use, the vehicle 30 can be removed from the frame 20 and the frame 20 can be folded up for easy storage without requiring a large additional space.

[0280] See also Figure 79 In one embodiment, the wheeled mobility device 100 includes a cover A80. The cover A80 covers the carrier 30 and forms a support portion A801 ​​for supporting the object to be transferred, such as an animal. It should be noted that the cover A80 can be made of a rigid material (e.g., plastic sheet, wood board) or a flexible material (e.g., canvas) depending on the specific application. In some embodiments, the cover can be a combination of rigid and flexible materials.

[0281] Figure 80 It shows Figure 79 A perspective view of the wheeled mobility device 100 with the covering A80 omitted. In some embodiments, the frame 20 is generally symmetrical from left to right. See also Figure 80 and Figure 81Specifically, the front support frame A22 is, for example, U-shaped, comprising front members A221 arranged parallel to each other on the left and right sides, and a front crossbar A222 connecting the two front members A221. The front crossbar A222 extends along a first direction F1, which corresponds to the left-right direction. More specifically, the front crossbar A222 is located at the top of the two front members A221. The rear support frame A24 is, for example, U-shaped, comprising rear members A241 arranged parallel to each other on the left and right sides, and a rear crossbar A242 connecting the two rear members A241. The rear crossbar A242 extends along the first direction F1 and is located at the top of the two rear members A241. More specifically, each front member A221 is intersected with a rear member A241 on the same side, and the front members A221 and rear members A241 on the same side are pivotally connected to a first pivot point Q1 by a locking pin, forming a rotation axis XX at the first pivot point Q1. This rotation axis XX is the central axis of the locking pin (the rotation axis XX is parallel to the first direction F1). More specifically, the two front members A221 are located inside the two rear members A241, that is, the distance between the two front members A221 is slightly smaller than the distance between the two rear members A241. Of course, in some alternative embodiments, the two front members A221 are located outside the two rear members A241, that is, the distance between the two front members A221 is slightly larger than the distance between the two rear members A241.

[0282] It should be noted that, unless otherwise expressly specified and limited, this utility model Figures 79 to 107 In the embodiments described, the directional terms such as "front," "rear," "left," and "right" for the wheeled mobile device 100 are based on the "front," "rear," "left," and "right" orientations of the wheeled mobile device 100 during normal operation. Arrows B and P are used to schematically indicate the "front" and "rear" directions, and arrows L and R are used to schematically indicate the "left" and "right" directions. These directional terms are used only to make the description of the embodiments of this utility model clearer and are not intended to unduly limit the scope of protection of this utility model.

[0283] See Figures 79 to 81 In some embodiments, a front reinforcing rod A23 is further provided between the two front members A221. The front reinforcing rod A23 is arranged parallel to the front crossbar A222 and close to the bottom end of the front member A221. A rear reinforcing rod A25 is further provided between the two rear members A241. The rear reinforcing rod A25 is arranged parallel to the rear crossbar A242 and close to the bottom end of the rear member A241.

[0284] See Figures 80 to 82 In some embodiments, the wheeled mobility device 100 further includes a linkage mechanism A70. The linkage mechanism A70 is pivotally connected between the front support frame A22 and the rear support frame A24, and has an extended state and a retracted state. When the linkage mechanism A70 is in the extended state (see...), Figure 83 ) and closed state (see Figure 85 When switching between the two states, the frame 20 is in the unfolded state along with the linkage mechanism A70 (see...). Figure 83 ) and folded status (see Figure 85 Switch between )

[0285] See also Figures 80 to 82 In some embodiments, the linkage mechanism A70 includes a rotating member A72 and a linkage member A74 pivotally connected to each other. Specifically, one of the first ends of the rotating member A72 and the linkage member A74 is pivotally connected to the front support frame A22, and the other is pivotally connected to the rear support frame A24. The second end of the linkage member A74 is pivotally connected to the second pivot point Q2 of the rotating member A72. In some embodiments, one of the first ends of the rotating member A72 and the linkage member A74 is pivotally connected to the third pivot point Q3 of the front support frame A22, and the other is pivotally connected to the fourth pivot point Q4 of the rear support frame A24. More specifically, in this embodiment, the first end of the rotating member A72 is pivotally connected to the third pivot point Q3 of the front support frame A22, and the first end of the linkage member A74 is pivotally connected to the fourth pivot point Q4 of the rear support frame A24 (see...). Figure 80 and Figure 81 More specifically, such as Figure 80 As shown, both the third pivot point Q3 and the fourth pivot point Q4 are located above the first pivot point Q1. Alternatively, in some alternative embodiments, the third pivot point Q3 and the fourth pivot point Q4 may be located below the first pivot point Q1. Of course, in other alternative embodiments, the first end of the linkage A74 is pivotally connected to the third pivot point Q3 of the front support frame A22, and the first end of the rotating member A72 is pivotally connected to the fourth pivot point Q4 of the rear support frame A24.

[0286] It should be noted that in this embodiment, both the rotating member A72 and the connecting member A74 are rod-shaped structures, each having two opposite ends along its axial or length direction. Taking the connecting member 74 as an example, one of its two ends can be referred to as the "first end," and the other end as the "second end." Taking the rotating member A72 as an example, one end connected to the support frame A22 can be referred to as the "first end," and the other end connected to the operating handle A73 (described below) can be referred to as the "second end." In embodiments where the operating handle A73 is not provided, the end of the rotating member A72 that is relatively closer to the second pivot point Q2 and farther from the third pivot point Q3 can be referred to as the "second end."

[0287] It should be noted that the terms "above" and "below" mentioned above are not limited to directly above and directly below.

[0288] Depend on Figures 81 to 85It can be seen that when the linkage mechanism A70 is in the deployed state, the chassis 20 is also in the deployed state. (See...) Figure 83 At this point, the rotating member A72 and the connecting member A74 are relatively unfolded and arranged horizontally, with an included angle α between them approximately 180 degrees. The second pivot point Q2, the third pivot point Q3, and the fourth pivot point Q4 are approximately on the same horizontal plane. The upper ends of the front support frame A22 and the rear support frame A24 are far apart from each other, and the lower ends of the front support frame A22 and the rear support frame A24 are also far apart from each other. Of course, in some embodiments, when the frame 20 is in the unfolded state, the included angle α between the rotating member A72 and the connecting member A74 can be an obtuse angle greater than 90 degrees. (Continue reading...) Figures 81 to 83 When the frame 20 is in the deployed state, the second pivot point Q2 is located between the third pivot point Q3 and the fourth pivot point Q4. (See also...) Figure 85 When the linkage mechanism A70 is in the retracted state, the frame 20 is in the folded state, and the included angle α between the rotating part A72 and the linkage A74 is an acute angle. The upper ends of the front support frame A22 and the upper ends of the rear support frame A24 are close to each other, and the lower ends of the front support frame A22 and the lower ends of the rear support frame A24 are close to each other.

[0289] In some embodiments, when the frame 20 switches from an unfolded state to a folded state, the vehicle 30 does not need to be completely detached from the frame 20. The frame 20 can be folded as long as it is disengaged from either the front support frame A22 or the rear support frame A24. For example, in some embodiments, one short rod A321 of the vehicle 30 is pivotally connected to one of the upper ends of the front support frame A22 (e.g., the front crossbar A222) and the rear support frame A24 (e.g., the rear crossbar A242). The other short rod A321 or a support rod A322 of the vehicle 30 is provided with a second locking mechanism A40. The second locking member A41 of the second locking mechanism A40 engages with the engagement slot A262 to lock the vehicle 30 onto the frame 20, or to allow the vehicle 30 to rotate around the front crossbar A222 or the rear crossbar A242 without interfering with the folding of the frame 20.

[0290] See Figure 80 and Figure 81In this embodiment, the linkage mechanism A70 includes two rotating members A72 and two linkage members A74. Specifically, the two rotating members A72 are arranged parallel to each other in the left-right direction, and the two linkage members A74 are also arranged parallel to each other in the left-right direction. The second end of each linkage member A74 is pivotally connected to the middle of one of the rotating members A72 on the same side at a second pivot point Q2, and the first end of each linkage member A74 is pivotally connected to the rear rod A241 on the same side. The first end of each rotating member A72 is pivotally connected to the front rod A221 on the same side. More specifically, in some embodiments, the linkage mechanism A70 further includes an operating handle A73 connected to the second ends of the two rotating members A72, which is used to drive the two rotating members A72 to rotate synchronously.

[0291] It should be noted that in the rotating member A72 or the connecting member A74, which has a rod-like structure, "middle part" refers to the region located between the first end and the second end. Specifically, in this embodiment, as... Figure 80 As shown, the first end of the rotating member A72 is far away from the first end of the linkage member A74, and the second end of the linkage member A74 is pivotally connected to the rotating member A72, specifically to the middle part of the rotating member A72 (the area between the first end and the second end of the rotating member A72).

[0292] The following is combined Figures 81 to 85 To illustrate the unfolding and folding process of the frame 20.

[0293] When the frame 20 in this embodiment needs to be folded, the operating handle A73 is pulled upwards in the vertical direction (third direction F3). The third direction F3 is approximately perpendicular to the first direction F1. At this time, the rotating member A72 moves with the operating handle A73, driving its first end to rotate around the third pivot point Q3. Furthermore, the second end of the connecting member A74 pivots around the second pivot point Q2 as the rotating member A72 moves, and the first end of the connecting member A74 rotates around the fourth pivot point Q4, thereby bringing the first end of the connecting member A74 closer to the first end of the rotating member A72. Simultaneously, through the third pivot point Q3 and the fourth pivot point Q4, the front support frame A22 and the rear support frame A24 are pulled closer together until the frame 20 is folded down. Figure 85 The folded state is shown. During this process, the angle α between the rotating component A72 and the linkage component A74 on the same side changes from approximately 180 degrees to an acute angle of less than 90 degrees (e.g., Figure 85 As shown, when the frame 20 is fully folded, the included angle α is less than 90 degrees. The frame 20 of this embodiment can reduce its volume by folding itself, thus making it convenient to store the wheeled mobility device 100 when it is not in use.

[0294] When the frame 20 in this embodiment needs to be unfolded, the user (mainly medical personnel) can directly press the front crossbar A222 and the rear crossbar A242 vertically downwards, causing the front support frame A22 and the rear support frame A24 to rotate at the first pivot point Q1 and move away from each other. During this process, the front support frame A22 and the rear support frame A24 synchronously drive the rotating component A72 and the connecting component A74 to move together, causing the rotating component A72 to rotate downwards around the third pivot point Q3 of the front support frame A22, and the connecting component A74 to rotate downwards around the fourth pivot point Q4 of the rear support frame A24. At the same time, the rotating component A72 and the connecting component A74 rotate around the second pivot point Q2, ultimately bringing the rotating component A72 and the connecting component A74 to the same horizontal plane (e.g., Figure 83 (As shown). That is, the angle α between the linkage A74 and the rotating component A72 changes from an acute angle of less than 90 degrees to approximately 180 degrees.

[0295] See Figures 79 to 82 In some embodiments, two front wheel assemblies 12 are mounted on the bottom of the front support frame A22, and two rear wheel assemblies 14 are mounted on the bottom of the rear support frame A24. More specifically, a front wheel assembly 12 is mounted on the bottom end of each of the two front struts A221, and a rear wheel assembly 14 is mounted on the bottom end of each of the two rear struts A241. Thus, the user can easily move the frame 20 using the wheel assemblies 10.

[0296] See Figure 80 and Figure 86 In some embodiments, the vehicle 30 is detachably mounted on the frame 20. In this embodiment, when the vehicle 30 is, for example, a stretcher structure, the vehicle 30 includes a support device A31, which is generally a rectangular frame structure. Specifically, the support device A31 includes a first support A32, which includes two short rods A321 and two long rods A323 connected in sequence. The two short rods A321 and the two long rods A323 are parallel to each other and connected end to end in sequence to form a rectangular frame structure. The two short rods A321 are spaced apart along a second direction F2, and the two long rods A323 are spaced apart along a first direction F1. The second direction F2 corresponds to the front-rear direction. The second direction F2 and the first direction F1 are not parallel; more specifically, the second direction F2 is generally perpendicular to the first direction F1. For more details, see [link to relevant documentation]. Figure 79 and Figure 80 In one embodiment, the covering 80 is generally rectangular in shape, and the four sides of the covering A80 are respectively connected to two short rods A321 and two long rods A323. The area of ​​the covering A80 located inside the rectangular frame forms a support part A801 ​​that supports the object to be transferred.

[0297] See Figure 79 and Figure 80In some implementations, each short rod A321 and / or each long rod A323 is fitted with a grip A35 for the user to hold. Specifically, the grip A35 can be a rubber grip, which increases the friction when the user holds the first support A32, making it less likely to slip out of the hand. Alternatively, the grip A35 can be a sponge grip, which increases the user's comfort when holding the first support A32.

[0298] In some embodiments, the first bracket A32 further includes a support rod A322 connected between the two long rods A323. This effectively improves the overall structural strength of the carrier 30. More specifically, there are two support rods A322, and the two support rods A322 are spaced apart along the length direction of the long rods A323 (front-back direction or second direction F2).

[0299] See Figure 86 and Figure 87 In some embodiments, to improve the stability of the vehicle 30 mounted on the frame 20, the vehicle 30 can be locked to the frame 20 by a second locking mechanism A40. In some embodiments, the second locking mechanism A40 includes a second locking member A41, which is movable on the vehicle 30 and has a locked position and an unlocked position. A locking groove A262 is provided on the frame 20. When the vehicle 30 is mounted on the frame 20 and the second locking member A41 is in the locked position, the second locking member A41 extends into the locking groove A262 to lock the vehicle 30 to the frame 20 (see...). Figure 87 This restricts the movement of the vehicle 30 on the frame 20 along the first direction F1, and also restricts the movement of the vehicle 30 on the frame 20 along the vertical direction (third direction F3). When the vehicle 30 is mounted on the frame 20 and the second locking member A41 is in the unlocked position, the second locking member A41 retracts from the engagement slot A262 to release the lock between the vehicle 30 and the frame 20. It can be understood that when the second locking member A41 is in the locked position, it can lock the vehicle 30 and the frame 20, preventing the vehicle 30 from being removed from the frame 20. When the second locking member A41 is in the unlocked position, it allows the vehicle 30 to be removed from the frame 20.

[0300] In some embodiments, at least one second locking mechanism A40 is provided, and correspondingly, at least one engaging slot A262 is provided on the frame 20. More specifically, in this embodiment, four second locking mechanisms A40 and four engaging slots A262 are provided. When the frame 20 is in the unfolded state and the carrier 30 is mounted on the frame 20, the four second locking mechanisms A40 are divided into two locking mechanism groups, each locking mechanism group including two second locking mechanisms A40. The two second locking elements A41 included in each locking mechanism group are spaced apart along the first direction F1, and the two locking mechanism groups are spaced apart along the second direction F2 on the carrier 30. Thus, the two locking mechanism groups arranged in the front-rear direction can be regarded as a front locking mechanism group and a rear locking mechanism group.

[0301] Specifically, the second locking member A41 within each of the aforementioned second locking mechanisms A40 is movable on the carrier 30 in the front-rear direction (second direction F2) to have a locking position extending into the corresponding engagement slot A262 and an unlocking position retracting from the engagement slot A262. More specifically, in the two locking mechanism groups (front locking mechanism group and rear locking mechanism group) arranged in the second direction F2, the unlocking and locking directions of the second locking member A41 in the two locking mechanism groups are opposite. For example, in the front locking mechanism group, the two second locking members A41 move forward to the locking position and move backward to the unlocking position; while in the rear locking mechanism group, the two second locking members A41 move forward to the unlocking position and move backward to the locking position. Thus, when the two second locking members A41 in the current locking mechanism group are respectively inserted into the corresponding engaging slots A262, and the two second locking members A41 in the rear locking mechanism group are respectively inserted into the corresponding engaging slots A262, the movement of the vehicle 30 on the frame 20 along the second direction F2 is restricted, ultimately making the vehicle 30 more securely mounted on the frame 20. Of course, in some alternative embodiments, the unlocking and locking directions of the second locking members A41 in the two locking mechanism groups can be the same.

[0302] See Figures 87 to 91 Specifically, in this embodiment, the second locking mechanism A40 is disposed on the support rod A322. More specifically, as... Figure 80 and Figure 86As shown, the frame 20 includes at least one support base A26, each support base A26 having a support groove A261, and an engaging groove A262 formed on the support base A26 and communicating with the support groove A261. When the vehicle 30 is mounted on the frame 20, the support rod A322 engages within the support groove A261 and is supported by the support base A26. At this time, when the second locking member A41 is in the locked position, the second locking member A41 extends into the engaging groove A262 to lock the vehicle 30 onto the support base A26. When the second locking member A41 is in the unlocked position, the second locking member A41 retracts from the engaging groove A262. This allows the user to directly remove the vehicle 30 from the frame 20. More specifically, the second locking mechanism A40 is disposed within the support rod A322, and the support rod A322 has a telescopic hole assembly A325 through which the second locking member A41 passes. The second locking member A41 moves along the second direction F2 within the telescopic hole group A325. When the second locking member A41 extends out of the telescopic hole group A325, the second locking member A41 is in the locked position; when the second locking member A41 retracts into the telescopic hole group A325, the second locking member A41 is in the unlocked position.

[0303] See Figure 81 and Figure 86 In some embodiments, the support base A26 includes a connecting segment A263, a support segment A264, and a limiting segment A265 connected sequentially and arranged at an angle. The connecting segment A263, the support segment A264, and the limiting segment A265 together form a support groove A261. The connecting segment A263 is fixed to the frame 20, and the engaging groove A262 is formed on the side of the limiting segment A265 facing the support groove A261. Specifically, the support base A26 on the front support frame A22 is fixed to the front crossbar A222 via the connecting segment A263, and the support base A26 on the rear support frame A24 is fixed to the rear crossbar 242 via the connecting segment A263. In this way, when the support rod A322 is placed in the support groove A261, the support rod A322 can be abutted by the limiting segment A265, thereby restricting the movement of the support rod A322 along the second direction F2. Simultaneously, after the second locking member A41 passes through the telescopic hole group A325 and is inserted into the engaging groove A262, the movement of the support rod A322 along the third direction F3 and along the first direction F1 is restricted. This improves the stability of the vehicle 30 mounted on the frame 20, preventing the vehicle 30 from swaying randomly due to movement of the frame 20.

[0304] It should be noted that the connection method between connecting section A263 and the front crossbar A222 or the rear crossbar A242 is not specifically limited; for example, it can be welding, bonding, or snap-fitting.

[0305] See Figures 88 to 91Two second locking mechanisms A40 are respectively provided in the two support rods A322 arranged in the front-to-back direction. In other words, as described above, one support rod A322 has a front locking mechanism group, and the other support rod A322 has a rear locking mechanism group. Specifically, the two second locking mechanisms A40 located in the same support rod A322 are spaced apart in the left-to-right direction (first direction F1). More specifically, for any two second locking mechanisms A40 located in different support rods A322, the unlocking and locking directions of their corresponding second locking members A41 are opposite. In some embodiments, support seats A26 are provided on both the front support frame A22 and the rear support frame A24. Specifically, the support seat A26 on the front support frame A22 is mounted on the front crossbar A222, and the support seat A26 on the rear support frame A24 is mounted on the rear crossbar A242. Of the two support rods A322 arranged in the front-rear direction, one support rod A322 can be locked to the support seat A26 on the front support frame A22 by at least one second locking mechanism A40 provided thereon, and the other support rod A322 can be locked to the support seat A26 on the rear support frame A24 by at least one second locking mechanism A40 provided thereon.

[0306] See Figure 87 , Figure 89 and Figure 91 In some embodiments, the second locking mechanism A40 further includes a drive member A42. The drive member A42 is operatively connected to the second locking member A41, and is movable on the carrier 30, having a first position and a second position. More specifically, the support rod A322 has a receiving space A324 for the drive member A42 to move, the receiving space A324 communicating with a telescopic hole assembly A325. When the drive member A42 is in the first position, the second locking member A41 is in a locked position. When the drive member A42 is in the second position, the second locking member A41 is in an unlocked position. Thus, the user can indirectly control the second locking member A41 by controlling the drive member A42.

[0307] See also Figure 87 , Figure 88 , Figure 89 and Figure 91 In some implementations, the support rod A322 includes a rod body A3221 and a mounting cover A3222. A cavity A32211 is formed within the rod body A3221, and the rod wall of the rod body A3221 has a placement opening A32212 communicating with the cavity A32211 (see...). Figure 89 Mounting cover A3222 includes a top cover A32221 and a limiting member A32222 connected to one side of the top cover A32221 (see...). Figure 89 and Figure 91 The containment space A324 is located inside the limiting member A32222 (see...). Figure 91 When the top cover A32221 is placed over the placement opening A32212, the limiting member A32222 is accommodated within the cavity A32211. In this embodiment, when the top cover A32221 is placed over the placement opening A32212, the top cover A32221 can be assembled with the rod body 3221 using fasteners such as screws.

[0308] More specifically, see Figure 89 and Figure 91 The telescopic hole assembly A325 includes a first telescopic hole A3251 and a second telescopic hole A3252. The first telescopic hole A3251 is located on the rod body A3221 and communicates with the cavity A32211. The second telescopic hole A3252 is located on the limiting member A32222 and communicates with the receiving space A324. When the second locking member A41 is in the locked position, the second locking member A41 extends out of the second telescopic hole A3252 and the first telescopic hole A3251 in sequence; when the second locking member A41 is in the locked position, the second locking member A41 retracts into the first telescopic hole A3251.

[0309] See Figure 87 In some embodiments, the second locking mechanism A40 further includes a first guide post A44 fixed to the second locking member A41. For example... Figure 87 , Figure 89 and Figure 91 As shown, the driving member A42 is provided with a first guide groove A421, which extends obliquely relative to the moving direction of the driving member A42. A first guide post A44 can slide within the first guide groove A421. When the driving member A42 switches between a first position and a second position, the cooperation between the first guide post A44 and the first guide groove A421 allows the second locking member A41 to switch between a locked position and an unlocked position. More specifically, the driving member A42 can move left and right within the limiting space, which is equivalent to moving along the first direction F1. Through the sliding cooperation between the first guide post A44 and the first guide groove A421, the second locking member A41 can move along the second direction F2 to extend out of the first telescopic hole A3251 or retract into the first telescopic hole A3251.

[0310] See Figures 88 to 91 This embodiment illustrates an exemplary implementation of releasing the second locking member A41. The wheeled mobile device 100 also includes a release assembly A50 disposed on the carrier 30. The release assembly A50 is used to drive the second locking member A41 from the locked position to the released position.

[0311] It should be noted that the release component A50 can drive the second locking member A41 from the locked position to the released position by either directly driving the second locking member A41 from the locked position to the released position, or indirectly driving the release member A41 from the locked position to the released position.

[0312] This embodiment illustrates an exemplary implementation in which the release assembly A50 indirectly drives the release member A52 to move. See also Figures 90 to 95 The release assembly A50 includes a release member A52 slidably mounted to the carrier 30, which is connected to the drive member A42 via a traction member A51. The traction member A51 may be, for example, a traction rope. Thus, when the user pushes the release member A52 to move, causing the traction member A51 to move the drive member A42 from a first position to a second position, the second locking member A41 can be switched from a locked position to a released position by the cooperation of the first guide post A44 and the first guide groove A421.

[0313] See Figure 91 , Figure 92 and Figure 94 In some embodiments, the second locking mechanism A40 further includes a resilient reset member A43. This resilient reset member A43 is, for example, a spring, which abuts against the driving member A42 and serves to hold the driving member A42 in a first position. Thus, when the user releases the release member A52, the resilient reset member A43 causes the driving member A42 to automatically move from the second position to the first position, thereby causing the second locking member A41 to automatically switch to the locked position and remain in the locked position. More specifically, the resilient reset member A43 is housed within a receiving space A324 formed within the mounting cover A3222, and both ends of the resilient reset member A43 abut against the driving member A42 and the limiting member A32222, respectively. For example, a protrusion A422 for the spring to be fitted may be provided on the driving member A42, which can be used to position the spring.

[0314] In some embodiments, the drive member A42 and the traction member A51 are detachably connected; or the drive member A42 and the traction member A51 are fixedly connected. See also Figure 91 and Figure 92 In this embodiment, a retaining groove A423 is formed on the driving member A42. The retaining groove A423 includes a bottom wall A4231, a mounting opening A4232, and a top opening A4233. The mounting opening A4232 and the bottom wall A4231 are opposite each other, and the top opening A4233 extends from the mounting opening A4232 towards the bottom wall A4231. See also... Figure 89 , Figure 91 and Figure 92In some embodiments, one end of the traction member A51 has a first locking connector A511. The first locking connector A511 enters from the mounting port A4232 and is accommodated in the retaining groove A423, while the traction member A51 exits from the retaining groove A423 through the top opening A4233. Specifically, the width W of the top opening A4233 is smaller than the size of the first locking connector A511. For example, when the first locking connector A511 is a sphere, the width W of the top opening A4233 is smaller than the diameter of the sphere. Thus, when the traction member A51 is engaged with the retaining groove A423 through the first locking connector A511, the traction member A51 will not separate from the driving member A42 due to the pulling force. Of course, in some alternative embodiments, the detachable connection between the traction member A51 and the driving member A42 can also be implemented in other ways and is not limited to the examples described above.

[0315] See Figure 89 and Figure 91 In some embodiments, the release member A52 has a second guide groove A521. The second guide groove A521 extends obliquely relative to the sliding direction of the release member A52. The release assembly A50 also includes a second guide post A53, which is disposed within the second guide groove A521 and is slidable along the second guide groove A521. The second guide post A53 is connected to the drive member A42 via a traction member A51. Specifically, the second guide post A53 has a through hole, and the end of the traction member A51 away from the drive member A42 passes through the through hole to form a second locking portion A512. The second locking portion A512 is, for example, a sphere, and the diameter of the second locking portion A512 is larger than the diameter of the through hole. This improves the reliability of the connection between the traction member A51 and the second guide post A53.

[0316] See Figures 95 to 98 In some embodiments, an inner cavity A301 is formed within the carrier 30. For example, the short rod A321 is a hollow tube with an inner cavity A301 formed inside. An operating hole A302 communicating with the inner cavity A301 is provided on the side wall of the carrier 30. Specifically, in this embodiment, when the carrier 30 is mounted on the frame 20, the operating hole A302 is oriented upwards. Of course, in other alternative embodiments, the operating hole A302 may also be oriented horizontally or downwards. Specifically, the unlocking member A52 passes through the operating hole A302 and extends into the inner cavity A301, and can slide relative to the operating hole A302. See also Figure 89 and Figure 91The unlocking assembly A50 also includes a first fixing cover A54 and a second fixing cover A55. The first fixing cover A54 and the second fixing cover A55 cooperate and are fixed to the carrier 30. Each of the first fixing cover A54 and the second fixing cover A55 has a limiting part A56 extending into the inner cavity A301 on its opposite side, and the limiting part A56 has a limiting groove A561. The two ends of the second guide post A53 are respectively slidably limited within the corresponding limiting groove A561. The extending direction of the limiting groove A561 (first direction F1) is perpendicular to the sliding direction of the unlocking member A52 (i.e., the third direction F3).

[0317] See Figure 89 and Figure 95 In some embodiments, the release member A52 is provided with a limiting protrusion A522. The limiting protrusion A522 can abut against the edge of the operating hole A302 to prevent the release member A52 from disengaging from the carrier 30. Specifically, at least two limiting protrusions A522 are provided, and the two limiting protrusions A522 are arranged opposite to each other.

[0318] In some embodiments, the first fixing cover A54 and the second fixing cover A55 may define an opening A504 that slides with the release member A52, and the limiting protrusion A522 of the release member A52 may abut against the edge of the opening A504 to prevent the release member A52 from disengaging from the carrier 30.

[0319] In some implementations, the cavity A301 has an elastic element (not shown in the figure) that abuts against the release member A52, so that the release member A52 tends to extend out of the operating hole A302.

[0320] See Figure 91 and Figure 95 In some embodiments, one release assembly A50 can simultaneously control two second locking mechanisms A40 located within the same support rod A322, which is equivalent to one release assembly A50 simultaneously controlling two driving members A42 within the same support rod A322. Specifically, the release assembly A52 has two second guide grooves A521, which are symmetrically arranged. The bottoms of the two second guide grooves A521 are close to each other (see...). Figure 95 More specifically, each second guide groove A521 is provided with a second guide post A53, and each second guide post A53 is connected to the corresponding drive member A42 through the corresponding traction member A51.

[0321] See Figures 88 to 91In this embodiment, the carrier 30 is provided with two release components A50. One release component A50 is used to control two second locking mechanisms A40 located within a support rod A322, and the other release component A50 is used to control two second locking mechanisms A40 located within another support rod A322. In other words, it is equivalent to one release component A50 controlling two second locking mechanisms A40 in the front locking mechanism group, and the other release component A50 controlling two second locking mechanisms A40 in the rear locking mechanism group.

[0322] Of course, in some alternative embodiments, a second locking mechanism A40 may be provided in each support rod A322. In other words, the carrier 30 has two second locking mechanisms A40, which are located in different support rods A322. More specifically, the carrier 30 is provided with a release assembly A50, which can be used to control the two second locking mechanisms A40 simultaneously.

[0323] The following is combined Figures 94 to 98 This will illustrate the working process of a release component A50 in this embodiment.

[0324] See Figures 94 to 96 When the second locking member A41 is in the locked position, the elastic reset member A43 drives the driving member A42 to remain in the first position. At this time, the releasing member A52 is engaged at the opening A504 by the limiting protrusion A522, and the second guide post A53 is located at the top of the second guide groove A521 (e.g., Figure 95 (As shown). See also Figure 97 and Figure 98 When it is necessary to unlock the second locking element A41, the user can press the unlocking element A52 upwards directly with their hand. Under the guidance of the second guide groove A521, the two second guide posts A53 move to the bottom of the corresponding second guide groove A521 (e.g., Figure 97 As shown), the two second locking parts A512 move closer to each other. At this time, the two traction members A51 will drive the corresponding driving members A42 to move from the first position to the second position, the two elastic reset members A43 are compressed, and the two second locking members A41 switch from the locked position to the unlocked position.

[0325] See also Figure 97 and Figure 98After the vehicle 30 is removed from the frame 20, the user can release the release member A52, which is equivalent to no longer pressing the release member A52. At this time, the drive member A42 is no longer subject to the traction force applied by the traction member A51. Under the action of the elastic reset member A43, the drive member A42 can move from the second position to the first position, thereby causing the second locking member A41 to move from the unlocked position to the locked position. In addition, since the release member A52 is not subject to the pressing force provided by the user, during the process of the drive member A42 moving from the second position to the first position, the traction member A51 is driven by the drive member A42 and moves. With the cooperation of the second guide groove A521 and the second guide post A53 (the second guide post A53 will move from the bottom to the top of the second guide groove A521), the (downward-moving) release member A52 extends outward into the operating hole A302 and resets. In some embodiments, the release member A52 can gradually move downward under the action of an elastic member (not shown) to extend out of the operating hole A302 until the limiting protrusion A522 abuts against the edge of the opening A504. In other alternative embodiments, the release member A52 is positioned downward, and the release member A52 can also extend out of the operating hole A302 and reset under the action of gravity.

[0326] In some embodiments, when the vehicle 30 is used, for example, as a stretcher structure, the vehicle 30 is provided with a fixing strap assembly A60 (see...). Figure 105 When the vehicle 30 is used alone, for example, when the vehicle 30 is placed on a vehicle seat, the vehicle 30 (more specifically, the support assembly A31) can be stably secured to the vehicle seat by the securing strap assembly A60. See also Figure 88 and Figure 99 In some embodiments, the vehicle 30 may include a support assembly A31 and at least one belt guide mechanism A33. The support assembly A31 includes a first support A32 and a second support A34 connected together, and the belt guide mechanism A33 is connected between the first support A32 and the second support A34. The belt guide mechanism A33 is used to cooperate with a fixing belt assembly A60 to secure the support assembly A31 to the vehicle seat.

[0327] Specifically, the belt guide mechanism A33 has a passageway A331 through which the constraint belt A613 of the fixed belt assembly A60 passes (see...). Figure 105 More specifically, such as Figure 99 As shown, in this embodiment, each support rod A322 is provided with two guide mechanisms A33, and each support rod A322 is provided with a second bracket A34, which extends approximately along the length direction (first direction F1) of the support rod A322. The two guide mechanisms A33 are respectively disposed at both ends of the support rod A322, and the two guide mechanisms A33 are connected through the second bracket A34.

[0328] In some embodiments, such as Figure 99 As shown, the second bracket A34 has a U-shaped structure, including two first connecting rods A341 and a second connecting rod A342 connecting the two first connecting rods A341. Specifically, the two first connecting rods A341 are spaced apart on the support rod A322 along its length. For example, the two first connecting rods A341 are spaced apart on the support rod A322 in a left-right direction, and the two first connecting rods A341 can be parallel to each other. The second connecting rod A342 connects the two first connecting rods A341 and extends along the length of the support rod A322 (first direction F1). Two belt guide mechanisms A33 are respectively disposed at both ends of the support rod A322, and the two belt guide mechanisms A33 are respectively connected between the corresponding first connecting rod A341 and the corresponding long rod A323. The two belt guide mechanisms A33 are connected by the second bracket A34. This improves the structural strength of the two belt guide mechanisms A33 and prevents damage during the clamping and fixing of the belt assembly A60.

[0329] It should be noted that in some embodiments, the second connecting rod A342 of the second bracket A34 is detachably connected between the two first connecting rods A341, for example, through a snap-fit ​​connection or a threaded connection. Of course, in other embodiments, the second connecting rod A342 may also be integrally formed between the two first connecting rods A341.

[0330] In some embodiments, such as Figure 99 As shown, two U-shaped second supports A34 are respectively disposed on the side of the corresponding support rod A322 near the short rod A321, which can be considered as the openings of the two second supports A34 being arranged opposite each other. Of course, in some embodiments, the two U-shaped second supports A34 are disposed on the side of the corresponding support rod A322 away from the short rod A321, which can be considered as the openings of the two second supports A34 being arranged opposite each other. Of course, in some other embodiments, of the two U-shaped second supports A34, one is disposed on the side of the corresponding support rod A322 near the short rod A321, and the other is disposed on the side of the corresponding support rod A322 away from the short rod A321, which can be considered as the openings of the two second supports A34 facing the same direction.

[0331] Specifically, in some embodiments, such as Figure 99 and Figure 100As shown, the guide mechanism A33 includes a clamp body A332 and a cover plate A333. The clamp body A332 includes an upper shell A3321 and a lower shell A3322 connected to the upper shell A3321. The upper shell A3321 and the lower shell A3322 together define a through-passage channel A331. The upper shell A3321 cooperates with the cover plate A333 and is fixed to the second bracket A34 (specifically, the first connecting rod A341), while the lower shell A3322 is fixed to the long rod A323.

[0332] See also Figure 99 The first connecting rod A341, the upper shell A3321, and the cover plate A333 are all provided with first connecting holes A334. Screws and other fasteners can pass through each of the first connecting holes A334 in sequence to fix the upper shell A3321 and the cover plate A333 to the first connecting rod A341. Specifically, as shown in the figure... Figure 99 and Figure 102 As shown, the side of the cover plate A333 facing the upper shell A3321 has a first protrusion A337, and the side of the upper shell A3321 facing the cover plate A333 has a second protrusion A338. This increases the structural strength of the cover plate A333 and the upper shell A3321. More specifically, both the first protrusion A337 and the second protrusion A338 have clearance grooves A339, the shape of which is adapted to the shape of the first connecting rod A341. Thus, when the upper shell A3321 and the cover plate A333 are connected to the first connecting rod A341, the first connecting rod A341 can engage within the clearance grooves A339, abutting against and confining between the clearance grooves A339 on the first protrusion A337 and the second protrusion A338. More specifically, there are multiple first protrusions A337 and second protrusions A338, all arranged along the length of the first connecting rod A341. The first protrusions A337 and second protrusions A338 can be arranged vertically opposite each other, or staggered.

[0333] More specifically, the long rod A323 is provided with a mounting member A335 that is detachably connected thereto. Both the mounting member A335 and the lower shell A3322 are provided with second connecting holes A336. Fasteners such as screws can pass through the respective second connecting holes A336 in sequence to fix the lower shell A3322 to the long rod A323. In some embodiments, the mounting member A335 can also be non-detachably connected to the long rod A323.

[0334] See Figures 99 to 102In some embodiments, the passage channel A331 has a first port A3311 and a second port A3312 for the fastening strap assembly to pass through, and a side inlet A3313 connecting the first port A3311 and the second port A3312. A first rib A3314 and a second rib A3315 are respectively provided on opposite sidewalls within the passage channel A331, and the first rib A3314 and the second rib A3315 are alternately arranged in the extending direction of the passage channel A331. Specifically, at least one first rib A3314 protrudes from the side of the upper shell A3321 facing the lower shell A3322, and at least one second rib A3315 protrudes from the side of the lower shell A3322 facing the upper shell A3321. The first ribs A3314 and the second ribs A3315 are alternately arranged in the extending direction of the constraint strap A613 of the fastening strap assembly A60 (see...). Figure 105 In some embodiments, by reasonably setting the heights of the first rib A3314 and the second rib A3315, the constraint strap A613 of the fixing strap assembly A60 located between the first port A3311 and the second port A3312 bends and wraps around the tops of the first rib A3314 and the second rib A3315 within the passage channel A331. This causes the constraint strap A613 of the fixing strap assembly A60 to experience movement resistance from the first rib A3314 and the second rib A3315. This tightens the fixing strap assembly A60, preventing it from easily sliding relative to the support device A31.

[0335] See Figures 103 to 105 The specific structure of the fastening strap assembly A60 will be described separately below. The fastening strap assembly A60 may include, for example, a restraint strap assembly A61 and an extension member A62. The restraint strap assembly A61 includes two restraint straps A613 and a shielding net A614 located between the two restraint straps A613. The restraint straps A613 may be, but are not limited to, elastic webbing. The restraint strap assembly A61 also includes a first connecting end A612 located at one end of each restraint strap A613, a first buckle A611 simultaneously connected to the other ends of both restraint straps A613, and a second connecting end A615 located below the shielding net A614. In some embodiments, the first connecting end A612 is an ISOFIX insert that engages with an ISOFIX connector (not shown) on a car seat. See also... Figure 103 and Figure 104 The first connecting end A612, together with the restraint strap A613, passes under the bracket assembly 31 and is detachably connected to the ISOFIX connector of the vehicle seat. Of course, the type of the first connecting end A612 is not limited to an ISOFIX insert; it can be a hook, fastener, or any suitable structure. Please refer to the reference document. Figure 104The second connecting end A615 is essentially a hook, which can be detachably connected to the long rod A323 of the first bracket A32. It is understood that the number of restraint straps A613 can also be one or more. The shielding net A614 and the second connecting end A615 may also be omitted in some embodiments.

[0336] In some embodiments, the two constraint bands A613 may be different portions of the same band. More specifically, the same band passes around the first buckle A611, and is divided into two constraint bands A613 located on either side of the first buckle A611, with the first buckle A611 as the boundary. In some embodiments, the first buckle A611 may slide along the same band.

[0337] See Figure 103 Specifically, the extension component A62 includes an extension strap A621, an adjustment part A622, a second fastener A623, and a third connecting end A624. The extension strap A621 is, for example, a webbing, one end of which is connected to the second fastener A623. The second fastener A623 is detachably connected to the first fastener A611. The adjustment part A622 is provided on the extension strap A621 for adjusting the usable length of the extension strap A621. The third connecting end A624, located at the other end of the extension strap A621, is generally a hook that can be detachably engaged with a suitable structure of the vehicle seat (e.g., a connecting rod on the top or backrest of the vehicle seat) to secure the bracket assembly A31 to the vehicle seat. It is understood that in some embodiments, the adjustment part A622 may be omitted.

[0338] Specifically, in combination Figures 103 to 105 The following explanation will use the example of using the aforementioned vehicle 30 alone (e.g., placing the vehicle 30 on and installing it in a vehicle seat) to illustrate the operating principle of the vehicle 30. When using the vehicle 30, first place it on the vehicle seat. Then, pass the two restraint straps A613 through the two guide mechanisms A33 located on the first bracket A32 along the front-rear direction (second direction F2). Subsequently, engage the second connecting end A615 below the shielding net A614 with the long rod A323 of the first bracket A32. Specifically, the restraint strap A613 is inserted into the insertion channel A331 from the side inlet A3313. The first end of the restraint strap A613 is connected to the first buckle A611, and the second end of the restraint strap A613 exits from the second port A3312 and connects to the first connecting end A612. Next, the third connecting end A624 of the extension component A62 is engaged with the connecting rod on the top or backrest of the vehicle seat. Finally, the first buckle A611 at the top of the two restraint straps A613 is engaged with the second buckle A623 of the extension component A62, thereby securing the bracket device A31 to the vehicle seat more firmly.

[0339] In some embodiments, such as Figures 103 to 105As shown, the vehicle 30 includes four guide mechanisms A33, two of which are spaced apart from the other two along the second direction F2, meaning that each second support A34 has two guide mechanisms A33. Specifically, the two guide mechanisms A33 located at the front (rear) are spaced apart along the left-right direction, i.e., the first direction F1, meaning that each second support A34 has one guide mechanism A33 at each end. When the vehicle 30 is placed on a vehicle seat, of the two guide mechanisms A33 located on the same second support A34, one is closer to the back of the vehicle seat than the other. The following will use the use of a restraint belt A613 as an example to illustrate the operating principle of the vehicle 30.

[0340] In some embodiments, such as Figures 103 to 105 As shown, the restraint strap A613 acts on the guide mechanism A33 on the second bracket A34, away from the vehicle seat back. Specifically, the restraint strap A613 extends from the upper shell A3321 to the support portion A801 ​​(…). Figure 105 Not shown, see Figure 79 The first end of the restraint strap A613 passes through the first port A3311, extends around the outside of the first bracket A32, and then extends upward and backward. The first buckle A611 is connected to the first end of the restraint strap A613. The second end of the restraint strap A613 passes through the second port A3312, extends backward from the underside of the second bracket A34 and the support rod A322, and the first connecting end A612 is connected to the second end of the restraint strap A613.

[0341] Of course, in some alternative embodiments, the restraint strap A613 can act simultaneously on both guide mechanisms A33 on the second bracket A34. Specifically, for the guide mechanism A33 relatively close to the vehicle seat back, the restraint strap A613 can pass through the through-passage A331 between the upper shell A3321 of the guide mechanism A33 and the support part A801, and the second end of the restraint strap A613 extends rearward from the first port A3311, and the second end of the restraint strap A613 is connected to the first connecting end A612. The first end of the restraint strap A613 extends along the guide direction of the second connecting rod A342 between the second bracket A34 and the support portion A801 ​​to the belt guide mechanism A33, which is relatively far from the vehicle seat back. Then, the restraint strap A613 enters the passage channel A311 from the second port A3312 of the belt guide mechanism A33, and after exiting from the first port A3311, extends upward and backward around the outside of the first bracket A32. The first buckle A611 is connected to the first end of the restraint strap A613. Alternatively, in some alternative embodiments, the first end of the restraint strap A613 may first exit from the belt guide mechanism A33, which is relatively far from the vehicle seat back, with the first buckle A611 connected to the first end. The second end of the restraint strap A613 extends along the guide direction of the second connecting rod A342 to the belt guide mechanism A33, which is relatively close to the vehicle seat back, and exits from there. The first connecting end A612 is connected to the second end of the restraint strap A613.

[0342] As described above, when the second bracket A34 is mounted on the support rod A322, it can connect with the guide mechanisms A33 located at both ends of the support rod A322 to effectively support the guide mechanisms A33 and improve their structural strength. Furthermore, when the constraint band A613 acts simultaneously on the guide mechanisms A33 at both ends of the support rod A322, the second bracket A34 (specifically, the second connecting rod AA342) also has a guiding function. It enables the constraint band A613, which passes through one guide mechanism 33, to move along the extension direction of the second connecting rod A342 to the other guide mechanism A33, thus allowing it to pass through the other guide mechanism A33 accurately and quickly.

[0343] Depend on Figure 99It can be seen that the opening directions of the two side inlets A3313 with guide mechanisms A33 spaced apart on the second direction F2 are opposite to each other, and each side inlet A3313 with guide mechanisms A33 faces the adjacent short side A321. This facilitates the entry of each constraint band A613 into the corresponding channel A331 through the side inlet A3313, and effectively avoids the problem of the two constraint bands A613 converging after sliding out of the side inlet A331, thus preventing the reliable fixation of the support device A31. Of course, in some alternative embodiments, the opening directions of the two side inlets A3313 with guide mechanisms A33 spaced apart on the second direction F2 can be opposite to each other.

[0344] See Figure 106 In some embodiments, both the front wheel assembly 12 and the rear wheel assembly 14 include an adapter 11, a wheel seat 13, a caster 15, and a brake assembly 17. Figure 106 An exemplary embodiment of the connection between the rear wheel assembly 14 and the rear support frame 24 is shown. The adapter 11 is fixed to the bottom of the rear support frame 24, specifically to the bottom end of the rear rod 241. The wheel seat 13 is pivotally connected to the adapter 11. The caster 15 is pivotally connected to the wheel seat 13. The brake assembly 17 can simultaneously restrict the rotation of the wheel seat 13 relative to the adapter 11 and restrict the rotation of the caster 15 relative to the wheel seat 13, thereby achieving braking and directional locking of the caster 15.

[0345] The structure of the adapter 11, wheel seat 13, caster 15 and brake assembly 17 can be found in the above text. Figures 34 to 43 The structure and working principle of these components are the same as described above, and will not be described in detail here. Figure 107 A perspective view of brake spring 174 is also shown.

[0346] See Figure 108 One aspect of this invention provides a fastener applicable to vehicles. The fastener includes a male fastener and a female fastener, each connected to a webbing strap. For example, the male fastener can be connected to a webbing strap serving as a shoulder strap, and the female fastener can be connected to a webbing strap serving as a crotch strap. Of course, the webbing connected to the male and female fasteners can be interchanged or connected to other webbing straps. When a child is riding in the vehicle, by engaging and locking the male and female fasteners together, two different webbing straps can be connected, thereby keeping the child inside the vehicle and preventing the child from falling out.

[0347] Figure 108 A fastener E1 according to a first example of the present invention is shown. Fastener E1 includes a male fastener E10 and a female fastener E20. Figure 108 In the middle, male fastener E10 and female fastener E20 are in a separated state. Figures 109 to 111The male fastener E10 and female fastener E20 are shown in an engaged state. The male fastener E10 includes a tongue-shaped piece E11. The tongue-shaped piece E11 is insertable into the female fastener E20, and the female fastener E20 is able to receive and releasably lock the tongue-shaped piece E11.

[0348] Combination Figure 112 The male fastener E10 has a tongue-shaped piece E11 with a locking hole E111, which engages with and is locked by a locking device in the female fastener E20 to retain the tongue-shaped piece E11 within the female fastener E20. The male fastener E10 also includes a male fastener connecting portion E101, which has a male fastener strap hole E102 for connecting a first webbing.

[0349] The tongue-shaped piece E11 can be a single, integrally molded component, and the male fastener connection part E101 can also be a single, integrally molded component. The tongue-shaped piece E11 can be made of, for example, metal. The male fastener connection part E101 can be made of, for example, plastic. The tongue-shaped piece E11 and the male fastener connection part E101 can be joined together using any known technique, such as welding, riveting, or bonding, as long as a secure connection between the tongue-shaped piece E11 and the male fastener connection part E101 is ensured; further details will not be elaborated here.

[0350] The male fastener E10 can consist of only two parts: a tongue-shaped piece E11 and a male fastener connecting part E101. The tongue-shaped piece E11 has a locking hole E111 that engages with the locking device in the female fastener E20 to achieve a locking connection between the male fastener E10 and the female fastener E20. This male fastener structure is simple, facilitates manufacturing, and reduces costs.

[0351] The female fastener E20 includes a female fastener housing E21, one end of which has a socket E24 suitable for insertion of a tongue-shaped piece E11 (see [link]). Figure 115 and Figure 118 The female fastener E20 also includes a female fastener connecting portion E201, which has a female fastener belt hole E202 for connecting a second webbing. The female fastener housing E21 includes a housing body E22 and a cover plate E23 connected to each other. Reinforcing fastener E25, locking element E26, guide element E28, and elastic reset element E27 are provided inside the female fastener housing E21. The female fastener E20 also includes a release element E29, a portion of which protrudes from the outer surface of the cover plate E23 for user operation. The release element E29 can be operated, for example, by the user pressing the release element E29, to release the tongue piece E11 of the male fastener E10, which is locked by the female fastener E20, from the female fastener E20, thereby enabling the tongue piece E11 of the male fastener E10 to be pulled out from the female fastener E20.

[0352] Reference Figure 113The cover plate E23 has an opening E231 through which the top of the locking member E29 can protrude from the cover plate E23. The cover plate E23 includes a cover plate extension E2301 with a cover plate hole E2302. The housing body E22 includes a housing body extension E2201 with a housing body hole E2202. When the housing body E22 and the cover plate E23 are assembled together, the cover plate hole E2302 and the housing body hole E2202 mate to form the female fastener hole E202. The housing end wall E221 of the housing body E22 and the cover plate end wall E232 of the cover plate E23 define an insertion port E24 (see...). Figure 115 and Figure 118 The housing body E22 and the cover plate E23 can be made of the same material, such as plastic. Alternatively, the housing body E22 and the cover plate E23 can be made of different materials.

[0353] The housing body E21 has a peripheral wall E222 including a housing end wall E221. The housing body E21 has an open top, which can be closed by a cover plate E23. A notch is provided on the top edge of the housing end wall E221 to form a socket E24. The peripheral wall E222 of the housing body E21 defines a first receiving cavity E225 in the upper part of the housing body E21. A reinforcing fastener E25 is received in the first receiving cavity E225, that is, the reinforcing fastener E25 is recessed in the housing body E21. When the housing body E22 and the cover plate E23 are assembled together, the reinforcing fastener E25 is received between the housing body E22 and the cover plate E23. The outer edge of the reinforcing fastener E25 can substantially abut against the side wall of the first receiving cavity E225, that is, the peripheral wall E222 of the housing body E21, such that the horizontal movement of the reinforcing fastener E25 within the first receiving cavity E225 is restricted. In addition, the reinforcing fastener E25 can be fixed to the housing body E22 by fasteners, so that the reinforcing fastener E25 remains fixed relative to the housing body E22.

[0354] like Figure 113 As shown, the cover plate E23 can be connected to the housing body E22 by multiple fasteners E30, and these fasteners E30 pass through the reinforcing fastener E25 to secure the reinforcing fastener E25 between the cover plate E23 and the housing body E22. The reinforcing fastener E25 may be made of, but is not limited to, metal.

[0355] A reinforcing fastener E25 is provided with a reinforcing fastener hole E251 at a position corresponding to the female fastener hole E202. The size of the reinforcing fastener hole E251 matches the shape and size of the female fastener hole E202. Specifically, the shape of the reinforcing fastener hole E251 is substantially the same as that of the female fastener hole E202, and the size of the reinforcing fastener hole E251 is also substantially the same as that of the female fastener hole E202. The second webbing passing through the female fastener hole E202 can simultaneously pass through the reinforcing fastener hole E251.

[0356] In some embodiments not shown, the female fastener with hole E202 can be formed in other ways. For example, the housing body E21 may not have a body extension E2201, or the cover plate E23 may not have a cover plate extension E2301, and the female fastener with hole E202 may be formed only by one of the housing body E21 or the cover plate E23. In this case, the reinforcing fastener E25 may be omitted accordingly, except for the reinforcing fastener with hole E251.

[0357] See Figure 113 and Figure 115 A tongue-shaped receiving cavity E226 is formed between the bottom surface of the reinforcing fastener E25 and the lower part of the housing body E22 to accommodate the tongue-shaped piece E11. The tongue-shaped receiving cavity E226 is formed below the reinforcing fastener E25 and above the bottom wall E224 of the housing body E22. When the tongue-shaped piece E11 is inserted into the female fastener housing E21 via the insertion port E24, the tongue-shaped receiving cavity E226 accommodates the tongue-shaped piece E11. The locking protrusion E261 may have a first position and a second position. In this example, the first position is located above the second position. When the locking protrusion E261 is in the first position, the locking protrusion E261 protrudes into the tongue-shaped receiving cavity E226, and the locking member E26 engages or disengages from the tongue-shaped piece E11. More specifically, when the locking protrusion E261 is in the first position, it is positioned within the movement trajectory of the tongue-shaped piece E11 and engages with it, preventing the tongue-shaped piece E11 from being directly pulled out. When the locking protrusion E261 is in the second position, it retracts from the tongue-shaped piece receiving cavity E226, allowing the tongue-shaped piece E11 to be inserted or removed. More specifically, when the locking protrusion E261 is in the second position, it retracts from the movement trajectory of the tongue-shaped piece E11 without interfering with its insertion or removal.

[0358] The reinforcing fastener E25 has a first vertical portion E252 and a second vertical portion E253 that are parallel to each other (see...). Figure 115 and Figure 118The first vertical portion E252 is formed by bending one end of the reinforcing fastener E25 adjacent to the insertion port E24 and extending towards the bottom wall E225 of the housing body E22. The first vertical portion E252 abuts against the housing end wall E221 of the housing body E22 and is provided with a first limiting opening E2521 suitable for the tongue-shaped piece E11 to pass through. The second vertical portion E253 is formed in the middle of the reinforcing fastener E25 and, like the first vertical portion E252, also faces the bottom wall E225 of the housing body E22. The second vertical portion E253 has a second limiting opening E2531 suitable for the tongue-shaped piece E11 to pass through. The first limiting opening E2521 and the second limiting opening E2531 are equidistant from the body of the reinforcing fastener E25, that is, at the same height. The first limiting opening E2521 and the second limiting opening E2531 are aligned with each other in the longitudinal direction of the housing body E22 and are also aligned with the insertion port E24. The dimensions of the first limiting port E2521 and the second limiting port E2531 are slightly larger than the cross-sectional dimensions of the widest and / or thickest part of the tongue piece E11. The first limiting port E2521 provides guidance for the tongue piece E11 to insert into the tongue piece receiving cavity E226 and pass over the locking member E26, and when the tongue piece E11 engages with the locking member E26, the first limiting port E2521 and the second limiting port E2531 limit the tongue piece E11, thereby preventing the tongue piece E11 from wobbling within the tongue piece receiving cavity E226. The reinforcing fastener E25 may be made of a metallic material or a non-metallic material such as a fiber-reinforced composite material.

[0359] like Figure 113 As shown, the housing body E22 has two vertical walls E2241 extending vertically upward from the bottom wall E225 of the housing body E22, defining a second receiving cavity E227. A locking member E26 and a resilient reset member E27 are both located within the second receiving cavity E227. The locking member E26 is slidably mounted within the second receiving cavity E227 in a vertical direction. The sliding direction of the locking member E26 is, for example, perpendicular to the direction of movement of the tongue plate E11. The resilient reset member E27 is located below the locking member E26, and the bottom wall E225 provides support and positioning for the base of the spring. The resilient reset member E27 is adapted to bias the locking member E26 to give it an upward tendency to move. In particular, the resilient reset member E27 is adapted to push the locking member E26 upward to engage the locking member E26 with the tongue plate E11.

[0360] The locking member E26 is secured by both the reinforcing fastener E25 and the housing body E22. Specifically, the female fastener E20 includes two guide members E28. The bottom ends of these two guide members E28 are respectively mounted in two vertical walls E2241. The top ends of these two guide members E28 can also be respectively mounted in corresponding vertical walls located in the cover plate E23. The locking member E26 has two outwardly extending arms E262, which are slidably received in the two guide members E28. The guide members E28 have a C-shaped cross-section and form sliding channels E281 adapted to receive the arms E262 and allow the arms E262 to slide. The reinforcing fastener E25 is provided with two rectangular holes E254, through which the two guide members E28 extend respectively. In some embodiments, the dimensions of the rectangular holes E254 match the dimensions of the guide members E28 so that the guide members E28 remain vertical relative to the bottom wall 225 of the housing body 22. The locking element E26 can slide vertically via two vertically arranged guide members E28. See also Figure 116 In some embodiments, the rectangular hole E254 is larger than the guide E28, and the rectangular hole E254 allows the guide E28 and the arm E262 to pass through. Furthermore, the two guides E28 restrict the locking member E26 in the longitudinal direction T2 and the transverse direction T1 of the female fastener E20 (T1 and T2 see...). Figure 114 Movement on ).

[0361] See Figure 113 In some embodiments, the size of the rectangular hole E254 may be larger than the size of the guide member E28. Each guide member E28 contacts a portion of the hole wall of the corresponding rectangular hole E254, for example, a portion of the hole wall of three adjacent rectangular holes E254. The vertical wall E2241 is formed with a groove structure E2240 for receiving the guide member E28. Bosses E2242 are provided on two opposite sidewalls of the groove structure E2240. The space between the bosses E2242 and the bottom wall of the groove structure E2240 is adapted to engage with the sidewall of the guide member E28 to stably hold the guide member E28 in the groove structure E2240.

[0362] In some embodiments, the vertical wall of the cover plate E23 may also be formed with a groove structure for accommodating the guide member E28. The groove structure may also be provided with a boss for engaging with the side wall of the guide member E28, so that the top of the guide member E28 is stably held in the groove structure formed by the vertical wall of the cover plate E23.

[0363] Locking member E26 is configured to operably retain tongue piece E11 releasably within tongue piece receiving cavity E226. Locking member E26 has a locking protrusion E261 adapted to project into locking hole E111 to engage locking member E26 with tongue piece E11. The end of locking protrusion E261 near the insertion port E24 has a driving ramp E263 that gradually rises from the leading edge of locking member E26 to the trailing edge of locking member E261 to allow tongue piece E11 to be inserted into tongue piece receiving cavity E226 and pass over locking protrusion E261. The rear end of locking protrusion E261 drops sharply to prevent tongue piece E11 from disengaging from locking member E26 when locking protrusion E261 protrudes into locking hole E111.

[0364] The release element E29 is configured to be operable, for example, pressable, and when operated, disengages the locking protrusion E261 of the locking element E26 from the tongue-shaped piece E11. The release element F29 includes a release element body E291 and two downwardly extending push rods E292. The release element body E291 is located between the cover plate E23 and the reinforcing fastener E25. See also... Figure 116 Two push rods E292 pass through the two rectangular holes E254 of the reinforcing fastener E25, respectively, and their ends abut against the locking member E26. The two push rods E292 are adapted to push the locking member E26 out of engagement with the locking hole E111 when the unlocking member E29 is operated, for example, when pressed. The resilient reset member E27 is telescopic. When the locking member E26 is pushed downwards, the resilient reset member E27 retracts, allowing the locking member E26 to move downwards. At this time, the locking protrusion E261 of the locking member E26 disengages from the locking hole E111, thus releasing the tongue plate E11 from the locking member E26. Figure 113 In the illustrated embodiment, the elastic reset element E27 is a helical spring. In some other embodiments, the elastic reset element E27 can be a leaf spring, disc spring, irregularly shaped spring, or other types of spring. In still other embodiments, the elastic reset element E27 can also be other elastic elements with telescoping properties.

[0365] Figures 114 to 116The fastener E1 is shown in the case where the release element E29 is not pressed when the male fastener E10 is engaged with the female fastener E20. When the locking protrusion E261 of the locking element E26 engages with the locking hole E111 of the tongue-shaped piece E11, the tongue-shaped piece E11 cannot be pulled out of the female fastener E20 until the release element E29 is pressed. When the release element E29 is not pressed, if the male fastener E10 and / or the female fastener E20, or the first webbing and / or the second webbing, are pulled in the direction opposite to the direction in which the male fastener E10 and the female fastener E20 are engaged, the pulling force will be transmitted to the locking element E26, and the force applied to the locking element E26 will be transmitted to the two guides E28 through the two arms E263 of the locking element E26, respectively. Since the guide member E28 is installed on the housing body E22 and the cover plate E23 and is reinforced by the reinforcing fastener E25, which is tightly fixed between the housing body E22 and the cover plate E23, the tension applied to the tongue piece E11 can be applied to the entire female fastener housing E21.

[0366] Figures 117 to 119 The fastener E1 is shown with the release element E29 pressed after the male fastener E10 and female fastener E20 are engaged. When the release element E29 is pressed, the push rod E292 pushes the locking element E26 downward. The locking element E26 transmits the pushing force to the resilient return element E27, which is forced to contract, thereby allowing the locking element E26 to move downward. The downward movement of the locking element E26 causes the locking protrusion E261, which enters the locking hole E112, to leave the locking hole E112. As a result, the locking protrusion E261 disengages from the tongue plate E11, thereby releasing the lock on the tongue plate E11.

[0367] The female fastener E20 has a simple structure, requiring only one reinforcing fastener to ensure sufficient strength. Compared to existing fasteners, the fastener proposed in this invention requires fewer parts, is lower in cost, easier to manufacture, and reduces assembly steps, thus improving production and assembly efficiency. Furthermore, the fastener proposed in this invention is lightweight and easy to operate.

[0368] Figure 120 and Figure 121 The male and female fasteners of the fastener according to the second example of this utility model are shown respectively. The fastener in the second example differs from the fastener in the first example in that it has an added foolproof structure. Apart from the foolproof structure, the fastener in the second example has the same construction as the fastener in the first example, and the same parts will not be described again. The reference numerals used for the fastener in the first example also apply to the fastener in the second example.

[0369] like Figure 120As shown, the male fastener E10 has a foolproof boss E41 on its first surface E112 of the tongue-shaped piece E11, extending from the male fastener connection portion E101 toward the tongue-shaped piece E11. Figure 121 As shown, the cover plate E23 end wall E232 of the female fastener E20 is provided with a foolproof notch E42 adjacent to the upper edge E241 of the socket E24. Figure 122 A cover plate E23 with a foolproof notch E42 is shown. The size of the foolproof notch E42 is slightly larger than the size of the foolproof boss E41, so that the foolproof boss E41 can enter or pass through the foolproof notch E42.

[0370] In this example, the foolproof notch E42 is located on the end wall E232 of the cover plate E23. In other examples, the foolproof notch E42 may also be located on the end wall E222 of the housing body E22, and correspondingly, the foolproof boss E41 is located on the second side of the tongue plate E11 opposite to the first side E112. That is, the foolproof notch E42 may be located on the side of the cover plate E23 in the female fastener housing E21, or on the side of the housing body E22, and the foolproof boss E41 may be located on the first side or the second side of the tongue plate E11. The implementation of the foolproof boss and the foolproof notch is not limited to the implementations exemplified above. It is understood that the foolproof boss and the foolproof notch may adopt other implementations, as long as the foolproof function can be achieved. For example, when the foolproof notch E42 is located on the side of the cover plate E23 in the female fastener housing E21, in addition to the notch in the cover plate end wall E232 of the cover plate E23, the first vertical portion E252 of the reinforcing fastener E25 adjacent to the insertion port E24 also has a notch. The notch of the first vertical portion E252 is located above the first limiting port E2521 and corresponds in position to the notch in the cover plate end wall E232. The notch in the cover plate end wall E232 and the notch in the first vertical portion E252 together form the foolproof notch.

[0371] The foolproof notch E42 is adapted to enter or pass through the foolproof boss E41 to limit the orientation of the tongue E11 of the male fastener E10 when it is inserted into the female fastener E20. Specifically, the foolproof structure formed by the foolproof boss E41 and the foolproof notch E42 only allows the tongue E11 of the male fastener E10 to engage with the locking member E26 of the female fastener E20 when the male fastener E10 is inserted into the female fastener E20 in the forward direction. When the male fastener E10 is inserted into the female fastener E20 in the reverse direction, the foolproof structure prevents the tongue E11 of the male fastener E10 from engaging with the locking member E26 of the female fastener E20.

[0372] Figures 123 to 125The fastener E1 is shown when the male fastener E10 is inserted into the female fastener E20 in the forward direction. When the tongue piece E11 of the male fastener E10 is inserted into the socket E24 with its first face E112 having the anti-fooling boss E41 facing the cover plate E23, the anti-fooling boss E41 enters the anti-fooling notch E42 to allow the tongue piece E11 to be further inserted into the socket E24 until the tongue piece E11 engages with the locking member E26.

[0373] Figures 126 to 127 The fastener E1 is shown when the male fastener E10 is inserted into the female fastener E20 in reverse. When the tongue-shaped piece E11 of the male fastener E10 is inserted into the socket E24 with its second side E113, which is opposite to the first side E112, facing the cover plate E23, the housing end wall E221 of the housing body E22 abuts against the anti-fooling boss E41 to prevent the tongue-shaped piece 11 from being further inserted into the socket E24. At this time, the tongue-shaped piece E11 cannot engage with the locking member E26.

[0374] Thanks to the foolproof design, the reverse installation of male fastener E10 relative to female fastener E20 is prevented, thus ensuring the safety of the fastener. Furthermore, when male fastener E10 is installed incorrectly relative to female fastener E20, it cannot be locked, thus alerting the user that it is reversed and allowing them to flip it over for reinstallation.

[0375] In the above embodiments, the anti-mistake protrusion E41 is provided on the male fastener E10, and the anti-mistake notch E42 is provided on the female fastener E20. In other embodiments, the anti-mistake protrusion E41 can be provided on the female fastener E20, and the anti-mistake notch E42 can be provided on the male fastener E10. Furthermore, both the male fastener E10 and the female fastener E20 can be provided with both the anti-mistake protrusion E41 and the anti-mistake notch E42. For example, the first surface E112 of the male fastener E10 is provided with the first anti-mistake protrusion, and the second surface E113 is provided with the first anti-mistake notch; the cover plate end wall E232 of the cover plate E23 of the female fastener E20 is provided with the second anti-mistake notch; and the shell end wall E221 of the shell body E22 is provided with the second anti-mistake protrusion, and vice versa. Furthermore, there can be multiple anti-mistake protrusions and anti-mistake notches.

[0376] Another aspect of this utility model provides a carrier. The carrier includes a first webbing, a second webbing, and a buckle E1 as described above. The first webbing is connected to a male buckle E10 of the buckle E1, and the second webbing is connected to a female buckle E20 of the buckle E1. The carrier according to this utility model can be used to transport people such as children, as well as pets. The carrier includes various tools suitable for transporting people or pets, such as strollers, car seats, baskets, stretchers, sleeping boxes, etc. The above examples are merely a few examples of carriers according to this utility model, and the carrier according to this utility model is not limited thereto. When a child or pet is riding in the carrier, the first and second webbing can be connected by engaging and locking the male buckle E10 and the female buckle E20 of the buckle E1 together, thereby keeping the child or pet inside the carrier and preventing the child or pet from leaving the carrier.

[0377] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For example, Figures 57-61 as well as Figure 64-72 The buckle assembly shown can be applied to any embodiment of the vehicle (such as...) Figure 10-11 , Figure 44-49 , Figure 88 , Figures 103-105 In the vehicle shown. For example. Figure 50-105 The vehicle shown can be engaged with the locking mechanism 60. Figure 1-49 The frame in the middle has 20 clips. For example, Figure 1-78 The vehicle shown can be connected to the corresponding second locking mechanism A40. Figures 79 to 105 The frame engagement is shown in the image. For example, Figures 108 to 127 The fastener shown can be replaced Figures 71-72 The fastener assembly is shown. The combinations of technical features between different embodiments of this application will not be elaborated further here.

[0378] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A wheeled mobility device, characterized by, Including: a carrier frame; a carrier, detachably mounted on the carrier frame; and a clamping mechanism, for detachably clamping the carrier on the carrier frame; the clamping mechanism has a clamping state and a release state, when the clamping mechanism is in the clamping state, the carrier is locked with the clamping mechanism, when the clamping mechanism is in the release state, the carrier can be separated from the clamping mechanism; the clamping mechanism includes a clamping piece and a clamping groove, the carrier includes a clamping rod received in the clamping groove, the clamping piece can move between a first position of extending into the clamping groove to fix the clamping rod in the clamping groove and a second position of withdrawing from the clamping groove to allow the clamping rod to be separated from the clamping groove.

2. The wheeled mobility device of claim 1, wherein, The clamping piece includes a clamping tongue and an operating portion connected with each other, the operating portion can be operated to drive the clamping tongue to move between the first position of extending into the clamping groove and the second position of withdrawing from the clamping groove; one end of the clamping tongue has a guide slope in contact with the clamping rod.

3. The wheeled mobility device of claim 1, wherein, The carrier includes a guide mechanism provided on the clamping rod, and the clamping mechanism further has a limiting gap in communication with the clamping groove, and the guide mechanism is positioned in the limiting gap.

4. The wheeled mobility device according to claim 2, wherein the clamping rod can move between a third position close to the clamping tongue and a fourth position away from the clamping tongue in the clamping groove, when the clamping rod is in the third position, the clamping piece fixes the clamping rod in the clamping groove, and when the clamping rod is in the fourth position, the clamping rod is separated from the clamping piece; when the clamping piece is in the first position, the distance between the clamping tongue and the side wall of the clamping groove is greater than the width of the clamping rod.

5. The wheeled mobility device of claim 1, wherein, Including: a wheel assembly including a front wheel assembly and a rear wheel assembly; a frame including a front rod member connected with the front wheel assembly and a rear rod member connected with the rear wheel assembly; one of the front rod member and the rear rod member is pivotally connected with the carrier frame to form a first pivot connection point, and the front rod member and the rear rod member are pivotally connected with each other to form a second pivot connection point; the frame has an unfolded state and a folded state; and a first locking mechanism arranged between the frame and the carrier frame; the first locking mechanism includes a first fixed seat and a second fixed seat pivotally connected with each other to form a third pivot connection point; the first fixed seat is fixed with the other one of the front rod member and the rear rod member; the second fixed seat is pivotally connected with the carrier frame to form a fourth pivot connection point; the first locking mechanism has a locked state and an unlocked state, when the first locking mechanism is in the locked state, the first fixed seat and the second fixed seat are relatively fixed, and the frame can be locked in the unfolded state; when the first locking mechanism is in the unlocked state, the first fixed seat and the second fixed seat can relatively rotate, allowing the frame to switch between the unfolded state and the folded state.

6. The wheeled mobility device of claim 5, wherein, The first locking mechanism further comprises a first locking piece, a first locking slot, a second locking slot and an unlocking piece; the first locking slot is arranged on the first fixing base, and the second locking slot is arranged on the second fixing base; When the first locking mechanism is in the locked state, the first locking piece is locked and matched with the first locking slot and the second locking slot; the unlocking piece is movably arranged on the first fixing base, and the unlocking piece can drive the first locking piece to be separated from one of the first locking slot and the second locking slot, so that the first locking mechanism is switched from the locked state to the unlocked state.

7. A carrier, characterized by The support device comprises a first support and a second support connected with each other; the first support comprises two short rods and two long rods connected in sequence, and a support rod connected between the two long rods; the second support comprises a first connecting rod arranged on the support rod; At least one belt guiding mechanism is connected between the long rod and the first connecting rod, and the belt guiding mechanism is used to cooperate with a fixing belt assembly to fix the support device on a seat.

8. The carrier of claim 7, wherein The first connecting rod is provided in two, and the two first connecting rods are arranged on the support rod in a length direction of the support rod; The second support further comprises a second connecting rod connected between the two first connecting rods; And / or, the two belt guiding mechanisms are arranged at two ends of the support rod respectively, and the two belt guiding mechanisms are connected between the corresponding first connecting rod and the corresponding long rod respectively.

9. The carrier of claim 8, wherein The fixing belt assembly comprises a restraint belt assembly, and the restraint belt assembly comprises at least one restraint belt; The belt guiding mechanism comprises a clamp body, and the clamp body comprises an upper shell and a lower shell connected with the upper shell; the upper shell and the lower shell jointly define a through channel, and the through channel has a first port and a second port through which the restraint belt passes; the upper shell is fixed with the first connecting rod, and the lower shell is fixed with the long rod.

10. The carrier of claim 9, wherein In the two belt guiding mechanisms arranged at the two ends of the support rod, when the restraint belt passes through the belt guiding mechanism away from the seat back, one end of the restraint belt passes out of the first port and extends out of the outside of the first support; the other end of the restraint belt passes out of the second port and extends out of the lower side of the second support and the support rod; Or, when the restraint belt passes through the two belt guiding mechanisms arranged at the two ends of the support rod, the restraint belt passes between the second support and the load-bearing part of the cover and extends along the guide direction of the second connecting rod, and the two ends of the restraint belt pass through the two belt guiding mechanisms respectively and extend out of the outside of the first support. ​ ​

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