Suitcase type cart

Abstract

The invention discloses a luggage type cart, and relates to the field of luggage, and the technical scheme of the invention is that the luggage type cart comprises a luggage body, and the luggage body is provided with a wheel leg assembly, a seat assembly and a handle assembly; the luggage body is downwards provided with the wheel leg assembly, and the wheel leg assembly is used for moving the luggage body; the seat assembly is arranged on the front side of the upper part of the luggage body and is used for providing a folding seat, and the handle assembly is arranged on the rear side of the luggage body and is used for pushing the luggage body to move by hands. The suitcase and the seat are ingeniously combined, the function of the seat can be provided while articles are carried through folding, a child can be easily carried while luggage is carried, and the suitcase and the cart are carried at the same time, so that the suitcase is more portable when people go out.

Description

Technical Field

[0001] The present invention relates to the field of bags and suitcases, in particular to a bag and suitcase type trolley. Background Art

[0002] Families with children need to bring not only the children but also a lot of luggage when going out. Generally, they need to carry a stroller and a suitcase at the same time. In fact, it is not convenient for one person to carry a stroller and a suitcase at the same time. At present, there are relevant solutions to this problem, such as a suitcase-type folding stroller disclosed in the patent document with announcement number CN1119942B. The stroller is folded to store the stroller and a larger bottom shell storage space is provided. In fact, this stroller is the same as a traditional stroller and does not have the function of a suitcase. The items cannot be packed and the items are easily scattered when they need to be carried. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a luggage-type cart, which cleverly combines luggage and seats. It can carry items while providing the function of a seat by folding. It can easily carry children while carrying luggage. It can carry a suitcase and a cart at the same time, making going out more portable.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a luggage-type cart comprises a luggage body, wherein the luggage body is provided with a wheel leg assembly, a seat assembly and a handle assembly;

[0005] The wheel-leg assembly is arranged downwardly of the bag body, and the wheel-leg assembly is used for moving the bag body; the seat assembly is arranged on the upper front side of the bag body, and the seat assembly is used for providing a folding seat; the handle assembly is arranged on the rear side of the bag body, and is used for pushing the bag body to move by hand.

[0006] In this solution, a seat assembly is arranged on the luggage body, which can be folded to provide a seat for children to sit on. An adult operates the handle assembly to push the luggage body. The luggage body is provided with a wheel back assembly, so it can be easily moved. It has the functions of a cart and a luggage, making it more convenient to carry luggage and children when going out.

[0007] Preferably, a set of wheel leg assemblies are respectively provided on both sides of the bag body;

[0008] The wheel-leg assembly comprises a guide rail, a sliding sleeve, a wheel rod and a roller;

[0009] The guide rail is vertically arranged on the luggage body, the slide sleeve is slidably matched with the guide rail, a clamping mechanism is arranged between the guide rail and the slide sleeve, and the clamping mechanism fixes the slide sleeve to the upper section or the lower section of the guide rail;

[0010] The upper ends of the two wheel rods are respectively located on both sides of the guide rail, and the lower ends of the two wheel rods are inclined in opposite directions. The wheel rods are slidably matched relative to the luggage body, the upper ends of the wheel rods are connected to the sliding sleeves through connecting rods, and rollers are arranged at the lower ends of the wheel rods.

[0011] Since the upper end of the wheel rod is connected to the sliding sleeve through a connecting rod, when the sliding sleeve is located at the upper part of the guide rail, the wheel rod will retract, and when the sliding sleeve is located at the lower part of the guide rail, the wheel rod will extend. In addition, since the two wheel rods are arranged in an inclined direction relative to each other, when the wheel rods are extended, the bottom of the wheel rods will be farther away from each other, so as to lower the overall center of gravity and better play the role of mobile bearing. When retracted, the distance will be closer and can occupy less space.

[0012] Preferably, the locking mechanism comprises a sliding rod, a first locking block and a second locking block;

[0013] The sliding rod is axially slidably fitted in the guide rail, and a reset elastic member is provided between the sliding rod and the guide rail, and the reset elastic member slides the sliding rod toward the first end of the guide rail;

[0014] The side wall of the guide rail is provided with a control window, and in this embodiment, the control window is located at the uppermost end of the guide rail. The side wall of the sliding rod is provided with a vertical push inclined surface; the control window is slidably matched with an inclined top rod, and the front end of the inclined top rod is arranged corresponding to the vertical push inclined surface; wherein the front end inclined surface of the inclined top rod is close to one side of the upper end of the guide rail, and the vertical push inclined surface is adapted to the front end inclined surface of the inclined top rod.

[0015] The first locking block and the second locking block are respectively arranged at the upper section and the lower section corresponding to the guide rail.

[0016] The first locking block is provided with a first control inclined surface and a first pin rod portion; the side wall of the sliding rod is provided with a first locking inclined surface adapted to the first control inclined surface, the upper side wall of the guide rail is provided with a first locking hole adapted to the first pin rod portion, and the first locking block is provided with a first locking elastic member pushed toward the first locking hole; wherein the first control inclined surface, the first locking inclined surface and the vertical push inclined surface have the same inclination direction.

[0017] The second locking block is provided with a second control inclined surface and a second pin rod portion; the side wall of the sliding rod is provided with a second locking inclined surface adapted to the second control inclined surface, the lower section side wall of the guide rail is provided with a second locking hole adapted to the second pin rod portion, and the second locking block is provided with a second locking elastic member pushed toward the second locking hole;

[0018] The first locking inclined surface and the first control inclined surface, and the second locking inclined surface and the second control inclined surface are aligned in only one set at the same time;

[0019] When the inclined plane push rod slides toward the end away from the vertical push inclined plane;

[0020] Under the push of the reset elastic member, the sliding rod slides downward; the first locking slope pushes the first control slope, the first locking slope and the first control slope are contacted and staggered, the first locking block slides in the direction away from the first locking hole, and the first pin rod portion retracts into the first locking hole; the second locking slope and the second control slope are contacted and aligned, the second locking elastic member pushes the second locking block to slide toward the second locking hole, and the second pin rod portion extends from the second locking hole to the outside; wherein the inclination directions of the second control slope, the second locking slope and the vertical push slope are opposite.

[0021] When the inclined plane push rod slides toward the end close to the vertical push inclined plane;

[0022] When the inclined surface pushes the vertical push inclined surface, the sliding rod slides upward; the second locking inclined surface pushes the second control inclined surface to contact and align, the second locking inclined surface pushes the second control inclined surface to contact and stagger, the second locking block slides in a direction away from the second locking hole, and the second pin rod portion retracts into the second locking hole; the first locking inclined surface contacts and aligns with the first control inclined surface, the first locking elastic member pushes the first locking block to slide toward the first locking hole, and the first pin rod portion extends from the first locking hole to the outside;

[0023] The sliding sleeve is provided with an outer hole adapted to the first pin portion or the second pin portion.

[0024] In the initial state, the sliding sleeve is located at the first upper section, the first pin rod portion extended to the outside is stuck in the outer hole, and the sliding sleeve is locked in the upper section of the slide rail. At this time, the wheel rod is retracted into the luggage body and locked.

[0025] When the wheel rod needs to be extended, the inclined top rod slides toward the end away from the vertical push inclined surface; the first pin rod portion retracts into the first locking hole, the sliding sleeve is unlocked in the upper section, and the wheel rod drives the sliding sleeve to slide downward to the lower section under the action of its own gravity, and the second pin rod portion extends from the second locking hole to the outside, and the second pin rod portion is stuck in the outer hole, thereby locking the sliding sleeve in the lower section of the slide rail.

[0026] When the wheel rod needs to be retracted, under the drive of external force, the inclined top rod slides toward the end close to the vertical push inclined surface, the second pin rod portion retracts into the second locking hole, and the sliding sleeve is unlocked at the lower section. Under the action of the weight of the luggage body itself, the sliding sleeve slides upward to the upper section, and the first pin rod portion extends from the second locking hole to the outside, and the first pin rod portion is stuck in the outer hole, thereby locking the sliding sleeve in the upper section of the slide rail.

[0027] Through the above, the sliding sleeve can be locked and unlocked at the upper section and the lower end, thereby realizing the retraction and extension of the wheel leg.

[0028] Preferably, a storage slot is provided on the front exterior of the luggage body, and rotating bases are provided on both sides of the upper end of the storage slot, respectively. The seat assembly comprises armrests, a backrest and a seat board, and armrest turntables are provided at two ends of the armrests corresponding to two rotating bases, and backboard turntables are provided at two sides of the backrest corresponding to two rotating bases, and seat turntables are provided at two sides of the seat board corresponding to two rotating bases; the rotating base, the armrest turntable, the backboard turntable and the seat turntable are respectively rotated and matched;

[0029] The inner disk surface of the rotating base is provided with a rotating cavity groove; the outer disk surface of the armrest rotating disk is provided with an armrest outer cavity groove;

[0030] The rotating cavity groove and the armrest outer cavity groove are buckled together to form an outer locking cavity;

[0031] The outer lock cavity is provided with a first locking member and a first driving member distributed from outside to inside;

[0032] The first driving member is located in the outer cavity groove of the armrest, and the first driving member can slide axially but cannot rotate circumferentially relative to the outer cavity groove of the armrest;

[0033] A first guide is axially arranged on the side wall of the outer lock cavity from the rotating cavity groove to the armrest outer cavity groove, and the first locking member can slide axially but cannot rotate circumferentially relative to the outer lock cavity through the first guide, and the first guide includes a first outer lock guide section located in the rotating cavity groove and a second outer lock guide section located in the armrest outer cavity groove;

[0034] A first spring is arranged between the first locking member and the rotating cavity groove, and the first spring pushes the first locking member and the first driving member to slide toward the inner end side of the outer locking cavity;

[0035] During the rotation of the back plate, the first driving member is pushed to slide toward the outer end of the rotating shaft, so that the first locking member is only adapted to the first outer locking guide section or is adapted to the first outer locking guide section and the second outer locking guide section at the same time;

[0036] When the seat is not needed, the armrests, backrest and seat are folded into the storage slot, and the backrest serves as an external cover to cover the storage slot. When the seat is needed, the armrests, backrest and seat are rotated open.

[0037] The rotating base, the armrest turntable, the backboard turntable and the seat turntable rotate and cooperate with each other respectively, so that the relative angles of the four can be adjusted, and folding and storage can be well achieved. The outer lock cavity is provided with a first guide member, so that the first locking member can slide axially through the first guide member. If the first locking member is located in the rotating cavity groove or the armrest outer cavity groove alone, the armrest turntable and the rotating base can achieve relative rotation. If the first locking member is located in both the armrest outer cavity groove and the rotating cavity groove, due to the existence of the first guide member, the first locking member can only slide axially and cannot rotate in a circle in both the armrest outer cavity groove and the rotating cavity groove, so at this time, the armrest turntable and the rotating base cannot rotate relative to each other.

[0038] Which of the above states the first locking member is specifically in is determined by the first driving member and the first spring. If the first driving member provides a thrust to push the first locking member, the first locking member will be located in the outer cavity groove and the rotating cavity groove of the armrest at the same time. If the first driving member does not provide a thrust, the first locking member will only be located in the rotating cavity groove under the push of the first spring.

[0039] Preferably, a driving plate is arranged outside the handrail turntable, the driving plate is arranged at an outer port of the control window, the outer end of the inclined top rod extends to the outside of the control window, and the outer end of the inclined top rod is arranged with a wheel lock inclined surface corresponding to the driving plate;

[0040] The side wall of the armrest outer cavity groove is provided with an outer locking groove, and the outer locking groove includes a first outer locking section and a second outer locking section, and the first outer locking section is located at the outer end side of the rotating shaft relative to the second outer locking section;

[0041] The inner end surface of the first driving member is provided with a first single-bevel driving tooth corresponding to the outer locking groove, and the first single-bevel driving tooth is axially slidably matched with the outer locking groove;

[0042] The inner disk surface of the handrail turntable is provided with a locking boss, and the outer side wall of the locking boss includes a first boss section and a second boss section in sequence from the outer end to the inner end, the first boss section is located on the outer side of the second outer locking section, and the groove bottom of the second outer locking section passes through the outer wall of the first boss section;

[0043] The outer wall of the locking boss is rotatably matched with the back plate rotating circle, and the inner edge of the outer end of the back plate rotating circle is provided with a first arc segment unlocking groove corresponding to the first outer locking segment;

[0044] When the rotating base, the handrail rotating disk and the back plate rotating circle are in the folded state, the first arc segment unlocking groove and the second outer locking segment are staggered, the end of the first arc segment unlocking groove pushes the first single inclined driving tooth to move to the first outer locking segment, and the first driving member pushes the first locking member to move toward the outer end of the rotating shaft, so that the first locking member is located in the handrail outer cavity groove and the rotating cavity groove at the same time; the driving plate squeezes the wheel lock inclined surface as the handrail rotating disk rotates and pushes the inclined surface push rod to move into the control window;

[0045] The back plate rotating circle rotates in the unfolding direction relative to the handrail rotating disk until the first arc segment unlocking groove and the second outer locking segment overlap, and the first spring pushes the first locking member to move toward the inner end of the rotating shaft so that the first locking member is only located in the rotating cavity groove, and the handrail rotating disk is rotated so that the handrail rotating disk is in an unfolded state relative to the rotating base; the driving plate leaves the inclined top rod as the handrail rotating disk rotates, and the inclined top rod moves out of the control window;

[0046] The side wall of the positioning boss is provided with at least two positioning slots;

[0047] The back plate rotating circle is slidably matched with a spring latch that abuts against the side wall of the positioning boss, and the front end of the spring latch extends to the positioning slot, and the spring latch is adapted to the inclined surface of the outlet hole.

[0048] The driving plate can push the inclined top rod when the armrest is folded to fix the wheel leg assembly in the luggage body. When the armrest is opened, the driving plate moves the inclined top rod away, the upper section of the guide rail is unlocked, the wheel retraction assembly can be opened and the sliding sleeve is locked in the lower section of the guide rail.

[0049] By rotating the back plate in a circle, the end of the first arc segment unlocking groove pushes the first single-bevel driving tooth, thereby controlling the first locking piece to be located alone in the rotating cavity groove or simultaneously in the armrest outer cavity groove and the rotating cavity groove.

[0050] By cooperating with the spring latch and the positioning slot, the position of the back panel relative to the armrest can be easily locked to prevent it from rotating.

[0051] Preferably, the outer end edge of the backrest is provided with a spring lock tongue abutting against the inner wall of the storage groove, and the inner wall of the storage groove is provided with a first lock hole for inserting the spring lock tongue;

[0052] A wrench hinged on the back of the backrest, the wrench is provided with a grab hook, and the spring lock tongue is provided with a hook hole for the grab hook to hook;

[0053] One end of a first driving wire is connected to the wrench, and the other end of the first driving wire is connected to the spring lock tongue;

[0054] In the initial state, the backrest is buckled in the storage slot, the spring lock tongue is inserted forward into the positioning slot, the spring lock tongue pulls the wrench through the first driving wire rope, the wrench is pressed against the back of the backrest, and the lock tongue extends out and is inserted into the first lock hole;

[0055] The spring lock tongue is pulled out from the first lock hole by turning the wrench, and the wrench pulls the spring lock tongue out of the positioning slot through the first driving wire rope.

[0056] When the seat needs to be used, the armrest, backrest and seat are folded in the storage groove and locked by inserting the spring lock tongue into the first lock hole. When the seat needs to be used, the wrench is swung, and the wrench will retract the spring lock tongue from the first lock hole to release the lock in the storage groove. At the same time, the spring lock tongue is pulled by the first drive rope to unlock the relative position of the armrest and the backrest, so that the wrench can unlock the two components at the same time.

[0057] Preferably, the end surface of the locking boss is provided with an armrest inner cavity groove, the outer surface of the seat plate rotating disk is provided with a seat plate cavity groove, and the armrest inner cavity groove and the seat plate cavity groove are buckled into an inner locking cavity;

[0058] The inner lock cavity is provided with a second guide member and an inner lock groove in sequence axially from the armrest inner groove to the seat plate groove;

[0059] The second locking member can slide axially but not rotate circumferentially relative to the inner locking cavity through the second guide member, and the second guide member includes a first inner locking guide section located in the inner cavity groove of the armrest and a second inner locking guide section located in the cavity groove of the seat plate. A second spring is arranged between the second locking member and the cavity groove of the seat plate, and the second spring pushes the second locking member to slide toward the outer end side of the inner locking cavity;

[0060] The inner locking groove includes a first inner locking section and a second inner locking section, the first inner locking section is located at the second boss section and connects the second boss section inside and outside, the second inner locking section is located at the seat plate cavity groove, the inner end of the back plate rotation circle is provided with a second arc segment unlocking groove, and one end of the second arc segment unlocking groove is provided with a groove exit slope corresponding to the rotation direction;

[0061] The side wall of the second locking member is provided with a second single-bevel driving tooth, the second single-bevel driving tooth is passed through the first inner locking section to the second arc segment unlocking groove, and the inclined surface of the second single-bevel driving tooth is arranged corresponding to the inclined surface of the groove;

[0062] When the armrest rotating disc, the backboard rotating circle and the seat rotating disc are in the folded state, the first arc segment unlocking groove and the second inner locking segment are staggered, so that the second single-bevel driving tooth moves to the second inner locking segment, and the second locking member moves toward the inner end of the rotating shaft. At this time, the second locking member is only adapted to the second inner locking guide segment;

[0063] The back panel rotates in the unfolding direction relative to the armrest turntable until the second arc segment unlocking groove and the second inner locking segment coincide with each other, and the second spring pushes the second locking piece to move toward the outer end of the rotating shaft, so that the second locking piece is simultaneously adapted to the first inner locking guide segment and the second inner locking guide segment, and the armrest turntable is rotated to make the armrest turntable in the unfolded state and locked relative to the rotating base.

[0064] The relative positions of the armrest turntable and the seat plate turntable are locked by the second locking member. If the second locking member can only slide axially but not rotate in a circle relative to the armrest inner groove and the seat plate groove, the armrest turntable and the seat plate turntable can achieve relative rotation when the second locking member is only located in the armrest inner groove. However, if the second locking member is located in both the armrest inner groove and the seat plate groove, the relative angle of the armrest turntable and the seat plate turntable will be locked. The axial movement of the second locking member is achieved by the movement of the back plate rotating in a circle. Specifically, when the second arc segment unlocking groove coincides with the first inner locking segment, the second single-bevel drive tooth is located in the second arc segment unlocking groove, and the second locking member is only located in the armrest inner groove. When the back plate is rotated in a circle to expand the three, the groove slope of the second arc segment unlocking groove will push the second single-bevel drive tooth to move toward the seat plate groove. The second arc segment unlocking groove is staggered with the first inner locking segment, and finally the second locking member is located in both the armrest inner groove and the seat plate groove.

[0065] Preferably, the handle assembly comprises a handle body;

[0066] A handle turntable is provided at the end of the handle body, a handle cavity groove is provided on the disk surface of the handle turntable, a limit pin hole is provided on the side wall of the handle cavity groove, a spring limit pin pointing into the handle cavity groove is provided in the limit pin hole, the tail end of the spring limit pin is connected to one end of the driving wire rope, and the other end of the driving wire rope extends to the handle body;

[0067] The luggage body is provided with a base turntable at both ends corresponding to the handle body, and the disk surface of the base turntable is provided with a limit boss corresponding to the handle cavity groove; the base turntable is rotatably buckled in the handle cavity groove, and the limit boss is rotatably matched with the handle cavity groove, and the side wall of the limit boss is circumferentially provided with a plurality of limit slots adapted to the front end of the spring limit pin. Preferably, the handle body is provided with a pressing part, the pressing part is longitudinally slidably matched with a driving slider, the driving slider is provided with a pressing inclined surface, the pressing part is laterally slidably matched with an unlocking switch, a pressing section is provided on one side of the unlocking switch, and an unlocking inclined surface adapted to the pressing inclined surface is provided on the other side of the unlocking switch, an unlocking spring is provided between the unlocking switch and the pressing part, the unlocking spring pushes the unlocking switch to move in a direction away from the driving slider, the driving slider slides toward one end of the driving line, presses the unlocking switch, and the unlocking inclined surface pushes the pressing inclined surface, so that the driving slider slides away from the one end of the driving line. Preferably, the bag body is provided with a storage bin, the bin opening of the storage bin is provided with a bin cover, one end of the bin cover is hinged to the storage bin, and the other end of the bin cover is provided with a knob switch;

[0068] Locking rods are respectively provided on both sides of the knob switch, and the locking rods are slidably matched with the box cover. A pin hook is provided at the inner end of the locking rod, and the knob switch is provided with a V-shaped contact surface for the pin hook to pull and hang; an outward push spring is provided between the locking rod and the box cover, and the outward push spring pushes the locking rod toward the outside of the box cover, and the inner wall of the storage bin is provided with a second lock hole for the outer end of the locking rod to be inserted, and when the knob switch is rotated, the V-shaped contact surface drives the pin hook to retract the locking rod inward.

[0069] Under normal circumstances, the outer end of the locking rod cooperates with the second locking hole to achieve the closed locking of the storage bin lid. When it needs to be opened, turn the knob switch, and the V-shaped contact surface will drive the pin hook inward when it rotates, that is, drive the locking rod to slide inward.

[0070] Beneficial effects of the present invention:

[0071] This solution cleverly combines luggage and seats. It can be folded to carry items while providing the function of a seat. Children can be easily carried while carrying luggage. The overall structure adopts a foldable storage method. The seat can be stored when not in use to avoid occupying external space and avoiding carrying a suitcase and a cart at the same time, making going out more portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only thirty-three of the drawings of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0073] Figure 1 It is an external schematic diagram of a seat assembly in an open state according to an embodiment of the present invention;

[0074] Figure 2 This is a schematic diagram of a wheel leg assembly in a bag body according to an embodiment of the present invention;

[0075] Figure 3 A cross-sectional view of a seat assembly in an open state according to an embodiment of the present invention;

[0076] Figure 4 It is a schematic diagram of the wheel-leg assembly in the extended state according to an embodiment of the present invention;

[0077] Figure 5 A schematic diagram of a state where the wheel rod is retracted according to an embodiment of the present invention;

[0078] Figure 6 is a schematic diagram of a slider and a connecting rod according to an embodiment of the present invention;

[0079] Figure 7 One of the exploded views of the sliding rod, the first locking block and the second locking block according to an embodiment of the present invention;

[0080] Figure 8 This is the second exploded view of the sliding rod (without housing), the first locking block and the second locking block according to an embodiment of the present invention;

[0081] Fig. 9 It is a schematic diagram of a slider in an embodiment of the present invention being in the lower section and the second pin portion extending to the outer hole;

[0082] Fig.10 It is a schematic diagram of a slider in an embodiment of the present invention being in a lower section and the second pin portion being retracted from the outer hole;

[0083] Fig.11 It is a schematic diagram of a slider in an embodiment of the present invention being in an upper section and the first pin portion is about to extend to the outer hole;

[0084] Fig.12 It is a schematic diagram of a slider in an embodiment of the present invention being in an upper section and a first pin portion extending to an outer hole;

[0085] Fig.13 is a schematic diagram of a seat assembly according to an embodiment of the present invention;

[0086] Fig.14 It is an exploded view from the left side of an embodiment of the present invention;

[0087] Fig.15 It is an exploded view from the right side of an embodiment of the present invention;

[0088] Fig.16 is a schematic diagram of a rotating base according to an embodiment of the present invention;

[0089] Fig.17 is a schematic diagram of a first locking member according to an embodiment of the present invention;

[0090] Fig.18 is a schematic diagram of a first driving member according to an embodiment of the present invention;

[0091] Fig.19 It is a left side stereogram of the handle turntable of the embodiment of the present invention;

[0092] Fig. 20 It is a right side stereoscopic view of the handle turntable according to an embodiment of the present invention;

[0093] Fig.21 A side perspective view of a backboard rotating in a circle according to an embodiment of the present invention;

[0094] Fig. 22 It is a right side stereogram of the backboard rotating circle according to an embodiment of the present invention;

[0095] Fig.23 is a schematic diagram of a second locking member according to an embodiment of the present invention;

[0096] Fig.24 A schematic diagram of a seat turntable according to an embodiment of the present invention;

[0097] Fig.25 A schematic diagram of the driving plate of the embodiment of the present invention before the inclined ejector rod is squeezed;

[0098] Fig.26 A schematic diagram of a driving plate extruding an inclined ejector rod according to an embodiment of the present invention;

[0099] Fig. 27 A cross-sectional view of a back plate buckled into a receiving groove according to an embodiment of the present invention;

[0100] Fig.28 A cross-sectional view of a case of a toggle wrench according to an embodiment of the present invention;

[0101] Fig.29 is a schematic diagram of a handle assembly according to an embodiment of the present invention;

[0102] Fig.30 This is one of the partial exploded schematic diagrams of the handle assembly of an embodiment of the present invention;

[0103] Fig.31This is the second partial exploded schematic diagram of the handle assembly according to the embodiment of the present invention;

[0104] Fig.32 It is a schematic diagram of the buckling of the knob switch and the box cover according to an embodiment of the present invention;

[0105] Fig.33 Schematic diagram of unlocking the knob switch and the box cover according to an embodiment of the present invention.

[0106] Among them, 1. luggage body; 2. storage slot; 3. drive plate; 4. wheel lock inclined surface; 5. wrench; 6. grab hook; 7. hook hole; 8. first lock hole; 9. first drive line; 10. storage compartment; 11. box cover; 12. knob switch; 13. V-shaped contact surface; 14. lock rod; 15. push spring; 17. guide rail; 18. sliding sleeve; 19. outer hole; 20. oblique guide port; 21. wheel rod; 22. connecting rod; 23. roller; 24. guide wheel; 25. sliding rod; 26. first locking inclined surface; 27. second locking inclined surface; 28. first locking block; 29. ​​first control inclined surface; 30. first Pin rod portion; 31, second locking block; 32, second control inclined plane; 33, second pin rod portion; 34, reset elastic member; 35, control window; 36, inclined plane top rod; 37, vertical push inclined plane; 38, backrest; 39, armrest; 40, seat plate; 41, rotating base; 42, rotating cavity groove; 43, first guide member; 44, armrest turntable; 45, armrest outer cavity groove; 46, outer locking groove; 47, first outer locking section; 48, second outer locking section; 49, armrest inner cavity groove; 50, guide column; 51, convex strip; 52, positioning boss; 53, first boss section; 54, second boss section; 55, positioning slot ; 56, first inner locking section; 57, second inner locking section; 58, first spring; 59, first driving member; 60, first single-bevel driving tooth; 61, first locking member; 62, first guide limit tooth; 63, spring latch; 64, back plate rotation circle; 65, first arc segment unlocking groove; 66, second arc segment unlocking groove; 67, groove exit slope; 68, seat plate turntable; 69, seat plate cavity groove; 70, second guide member; 71, second locking member; 72, second spring; 73, second single-bevel driving tooth; 74, handle body; 75, handle turntable; 76, handle cavity groove; 77, base turntable; 78, limit Boss; 79, spring limit pin; 80, limit slot; 81, drive rope; 82, inner shaft; 83, limit strip hole; 84, limit pin hole; 85, extrusion slope; 86, unlocking switch; 87, extrusion section; 88, unlocking slope; 89, unlocking spring; 90, sliding positioning groove; 91, extrusion part; 92, drive slider; 93, first locking hole; 94, first locking elastic member; 95, second locking hole; 96, second locking elastic member; 97, first control groove; 98, second control groove; 99, third control groove; 100, square tube; 101, positioning rod; 102, spring lock tongue. DETAILED DESCRIPTION

[0107] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0108] Example

[0109] like Figure 1 As shown, a luggage-type cart comprises a luggage body, wherein the luggage body is provided with a wheel leg assembly, a seat assembly and a handle assembly;

[0110] The wheel-leg assembly is arranged downwardly of the bag body, and the wheel-leg assembly is used for moving the bag body; the seat assembly is arranged on the upper front side of the bag body, and the seat assembly is used for providing a folding seat; the handle assembly is arranged on the rear side of the bag body, and is used for pushing the bag body to move by hand.

[0111] In this solution, a seat assembly is arranged on the luggage body, which can be folded to provide a seat for children to sit on. An adult operates the handle assembly to push the luggage body. The luggage body is provided with a wheel back assembly, so it can be easily moved. It has the functions of a cart and a luggage, making it more convenient to carry luggage and children when going out.

[0112] A set of wheel leg assemblies are respectively arranged on both sides of the bag body;

[0113] Combination Figure 2 and Figure 3 As shown, the wheel-leg assembly includes a guide rail 17, a sliding sleeve 18, a wheel rod 21 and a roller 23;

[0114] The guide rail 17 is vertically arranged on the luggage body, and the slide sleeve 18 is slidably matched with the guide rail 17. A clamping mechanism is arranged between the guide rail 17 and the slide sleeve 18, and the clamping mechanism fixes the slide sleeve 18 to the upper section or the lower section of the guide rail 17;

[0115] The upper ends of the two wheel rods 21 are respectively located on both sides of the guide rail 17, and the lower ends of the two wheel rods 21 are inclined in opposite directions. The wheel rod 21 slides relative to the bag body, and the upper end of the wheel rod 21 is connected to the sliding sleeve 18 through a connecting rod 22. A roller 23 is set at the lower end of the wheel rod 21.

[0116] Combination Figure 4 , Figure 5 and Figure 6As shown, since the upper end of the wheel rod 21 is connected to the sliding sleeve 18 through the connecting rod 22, when the sliding sleeve 18 is located at the upper part of the guide rail 17, the wheel rod 21 will be retracted, and when the sliding sleeve 18 is located at the lower part of the guide rail 17, the wheel rod 21 will be extended, and since the two wheel rods 21 are arranged to be inclined in relative directions, when the wheel rod 21 is extended, the bottom of the wheel rod 21 will be farther away, so as to lower the overall center of gravity and better play the role of mobile bearing, and when retracted, the distance is closer and can occupy a smaller space.

[0117] The luggage body is provided with a plurality of guide wheels 24 adapted to the side of the wheel rod 21. The use of the guide wheels 24 can reduce the friction between the wheel rod 21 and the luggage body. The lower ends of the two wheel rods 21 are cross-distributed to the other side of the guide rail 17. When retracted, the occupied space is smaller, and the spacing is also large enough when extended.

[0118] Combination Figure 7 and Figure 8 As shown, the locking mechanism includes a sliding rod 25, a first locking block 28 and a second locking block 31;

[0119] The sliding rod 25 is axially slidably fitted in the guide rail 17, and a reset elastic member 34 is provided between the sliding rod 25 and the guide rail 17, and the reset elastic member 34 slides the sliding rod 25 toward the first end of the guide rail 17;

[0120] The side wall of the guide rail 17 is provided with a control window 35, and the side wall of the sliding rod 25 is provided with a vertical push inclined surface 37; the control window 35 is slidably matched with an inclined surface push rod 36, and the front end of the inclined surface push rod 36 is provided corresponding to the vertical push inclined surface 37;

[0121] The first locking block 28 and the second locking block 31 are respectively arranged at the upper section and the lower section corresponding to the guide rail 17.

[0122] The first locking block 28 is provided with a first control inclined surface 29 and a first pin rod portion 30; the side wall of the sliding rod 25 is provided with a first locking inclined surface 26 adapted to the first control inclined surface 29, the upper side wall of the guide rail 17 is provided with a first locking hole 93 adapted to the first pin rod portion 30, and the first locking block 28 is provided with a first locking elastic member 94 pushed toward the first locking hole 93;

[0123] The second locking block 31 is provided with a second control inclined surface 32 and a second pin rod portion 33; the side wall of the sliding rod 25 is provided with a second locking inclined surface 27 adapted to the second control inclined surface 32, the lower section side wall of the guide rail 17 is provided with a second locking hole 95 adapted to the second pin rod portion 33, and the second locking block 31 is provided with a second locking elastic member 96 pushed toward the second locking hole 95;

[0124] In this embodiment, the guide rail includes an outer square tube 100 and an inner positioning rod 101. The positioning rod 101 is fixed in the square tube 100 and is used to set the special-shaped structure in the square tube 100. In this embodiment, the first locking hole 93 includes two parts, the square tube 100 and the positioning rod 101. The mark in the figure only marks the part of the positioning rod 101. The second locking hole 95 is the same.

[0125] The first locking inclined surface 26 and the first control inclined surface 29, and the second locking inclined surface 27 and the second control inclined surface 32 are aligned at the same time;

[0126] Combination Figure 9-12 As shown, when the inclined push rod 36 slides toward the end away from the vertical push inclined surface 37;

[0127] Under the push of the reset elastic member 34, the sliding rod 25 slides downward; the first locking inclined surface 26 pushes the first control inclined surface 29, the first locking inclined surface 26 and the first control inclined surface 29 are in contact and staggered, the first locking block 28 slides in a direction away from the first locking hole 93, and the first pin portion 30 retracts into the first locking hole 93; the second locking inclined surface 27 is in contact and aligned with the second control inclined surface 32, the second locking elastic member 96 pushes the second locking block 31 to slide toward the second locking hole 95, and the second pin portion 33 extends from the second locking hole 95 to the outside;

[0128] When the inclined push rod 36 slides toward one end close to the vertical push inclined surface 37;

[0129] The inclined push rod 36 pushes the vertical push inclined surface 37, and the sliding rod 25 slides upward; the second locking inclined surface 27 pushes the second control inclined surface 32 to contact and align, and the second locking inclined surface 27 pushes the second control inclined surface 32 to contact and stagger, and the second locking block 31 slides in a direction away from the second locking hole 95, and the second pin rod portion 33 retracts into the second locking hole 95; the first locking inclined surface 26 contacts and aligns with the first control inclined surface 29, and the first locking elastic member 94 pushes the first locking block 28 to slide toward the first locking hole 93, and the first pin rod portion 30 extends from the first locking hole 93 to the outside;

[0130] The sliding sleeve 18 is provided with an outer hole 19 adapted to the first pin portion 30 or the second pin portion 33 .

[0131] In the initial state, the sliding sleeve 18 is located at the first upper section, and the first pin rod portion 30 extending to the outside is inserted into the outer hole 19, and the sliding sleeve 18 is locked in the upper section of the slide rail. At this time, the wheel rod 21 is retracted into the luggage body and locked.

[0132] When the wheel rod 21 needs to be extended, the inclined push rod 36 slides toward the end away from the vertical push inclined surface 37; the first pin rod portion 30 retracts into the first locking hole 93, and the sliding sleeve 18 is unlocked in the upper section. Under the action of the wheel rod's own gravity, the sliding sleeve 18 slides downward to the lower section, and the second pin rod portion 33 extends from the second locking hole 95 to the outside, and the second pin rod portion 33 is inserted into the outer hole 19, thereby locking the sliding sleeve 18 in the lower section of the slide rail.

[0133] When the wheel rod 21 needs to be retracted, when the inclined top rod 36 slides toward one end close to the vertical push inclined surface 37 under the drive of external force, the second pin rod portion 33 retracts into the second locking hole 95, and the sliding sleeve 18 is unlocked in the lower section. Under the action of the gravity of the luggage body itself, the sliding sleeve 18 slides upward to the upper section, and the first pin rod portion 30 extends from the second locking hole 95 to the outside, and the first pin rod portion 30 is inserted into the outer hole 19, thereby locking the sliding sleeve 18 in the upper section of the slide rail.

[0134] Through the above, the sliding sleeve 18 can be locked and unlocked at the upper section and the lower end, thereby realizing the retraction and extension of the wheel retreat.

[0135] The side wall of the sliding rod 25 is provided with a first control groove 97, and the first locking inclined surface is provided on one side of the groove bottom of the first control groove 97. It can improve the space utilization rate. The side wall of the sliding rod 25 is provided with a second control groove 98, and the second locking inclined surface is provided on one side of the groove bottom of the second control groove 98. It can improve the space utilization rate. A third control groove 99 is provided corresponding to the control window 35, and the vertical push inclined surface 37 is provided on one side of the groove bottom of the third control groove 99. It can improve the space utilization rate.

[0136] The two ends of the sliding sleeve 18 are respectively provided with oblique guide openings 20 corresponding to the first pin portion 30 and the second pin portion 33. When the sliding sleeve 18 slides close to the first pin portion 30 or the second pin portion 33, the outer end thereof is pressed inward to make it fit with the outer hole 19. The sliding sleeve 18 is provided with a through hole, and the guide rail 17 is slidably penetrated in the through hole. The stability of the cooperation between the sliding sleeve 18 and the guide rail 17 can be improved.

[0137] The front side of the bag body is provided with a storage slot 2, and the upper ends of the storage slot 2 are provided with rotating bases 41 respectively. Fig.13 , Fig.14 and Fig.15As shown, the seat assembly includes an armrest 39, a backrest 38 and a seat plate 40. The two ends of the armrest 39 are respectively provided with an armrest turntable 44 corresponding to the two rotating bases 41, the two sides of the backrest 38 are respectively provided with a back plate turntable corresponding to the two rotating bases 41, and the two sides of the seat plate 40 are respectively provided with a seat plate 40 turntable corresponding to the two rotating bases 41; the rotating base 41, the armrest turntable 44, the back plate turntable and the seat plate 40 turntable are respectively rotated and matched;

[0138] Combination Fig.16 As shown, the inner disk surface of the rotating base 41 is provided with a rotating cavity 42; the outer disk surface of the armrest rotating disk 44 is provided with an armrest outer cavity 45;

[0139] The rotating cavity 42 and the armrest outer cavity 45 are buckled together to form an outer locking cavity;

[0140] Combination Fig.17 As shown, the outer lock cavity is provided with a first locking member 61 and a first driving member 59 from outside to inside;

[0141] Combination Fig.18 As shown, the first driving member 59 is located in the armrest outer cavity groove 45, and the first driving member 59 can slide axially but cannot rotate circumferentially relative to the armrest outer cavity groove 45;

[0142] Combination Fig. 20 As shown, a first guide member 43 is axially arranged on the side wall of the outer lock cavity from the rotating cavity groove 42 to the armrest outer cavity groove 45, and the first locking member 61 can slide axially relative to the outer lock cavity through the first guide member 43 but cannot rotate circumferentially, and the first guide member 43 includes a first outer lock guide section located in the rotating cavity groove 42 and a second outer lock guide section located in the armrest outer cavity groove 45;

[0143] A first spring 58 is disposed between the first locking member 61 and the rotating cavity 42, and the first spring 58 pushes the first locking member 61 and the first driving member 59 to slide toward the inner end side of the outer locking cavity;

[0144] During the rotation of the back plate, the first driving member 59 is pushed to slide toward the outer end of the shaft, so that the first locking member 61 is only adapted to the first outer locking guide section or is adapted to the first outer locking guide section and the second outer locking guide section at the same time.

[0145] When the seat is not needed, the armrest 39, the backrest 38 and the seat 40 are folded into the storage slot 2, and the backrest 38 serves as an external cover to cover the storage slot 2. When the seat is needed, the armrest 39, the backrest 38 and the seat 40 are rotated open.

[0146] The rotating base 41, the armrest rotating disk 44, the back plate rotating circle and the seat plate 40 rotating disk rotate and cooperate respectively, so that the relative angles of the four can be adjusted, and folding and storage can be well achieved, wherein the outer lock cavity is provided with a first guide 43, so that the first locking member 61 can slide axially through the first guide 43, and if the first locking member 61 is located alone in the rotating cavity groove 42 or the armrest outer cavity groove 45, the armrest rotating disk 44 and the rotating base 41 can achieve relative rotation. If the first locking member 61 is located in both the armrest outer cavity groove 45 and the rotating cavity groove 42, due to the existence of the first guide 43, the first locking member 61 can only slide axially and cannot rotate in a circle in both the armrest outer cavity groove 45 and the rotating cavity groove 42, so at this time, the armrest rotating disk 44 and the rotating base 41 cannot rotate relative to each other.

[0147] Which of the above states the first locking member 61 is specifically in is determined by the first driving member 59 and the first spring 58. If the first driving member 59 provides a thrust to push the first locking member 61, the first locking member 61 will be located in both the armrest outer cavity 45 and the rotating cavity 42 at the same time. If the first driving member 59 does not provide a thrust, the first locking member 61 will be located only in the rotating cavity 42 under the push of the first spring 58.

[0148] The first guide member 43 is a first guide limit groove provided on the side wall of the outer lock cavity, and the first locking member 61 is provided with a first guide limit tooth 62 slidably adapted to the first guide limit groove. It can well achieve that the first guide member 43 and the armrest outer cavity groove 45 and the rotating cavity groove 42 can only slide axially but not rotate circumferentially.

[0149] The axis of the outer lock cavity is axially provided with a guide column 50. The guide column 50 can further improve the stability of the first driving member 59 and the first locking member 61 during the sliding process in the outer lock cavity.

[0150] Combination Fig.25 and Fig.26 As shown, a driving plate 3 is disposed outside the handrail turntable 44, and the driving plate 3 is disposed at the outer end of the control window 35, and the outer end of the inclined top rod 36 extends to the outside of the control window 35, and the outer end of the inclined top rod 36 is disposed with a wheel lock inclined surface 4 corresponding to the driving plate 3;

[0151] The side wall of the armrest outer cavity groove 45 is provided with an outer locking groove 46, and the outer locking groove 46 includes a first outer locking section 47 and a second outer locking section 48, and the first outer locking section 47 is located at the outer end side of the rotating shaft relative to the second outer locking section 48;

[0152] The inner end surface of the first driving member 59 is provided with a first single-bevel driving tooth 60 corresponding to the outer locking groove 46, and the first single-bevel driving tooth 60 is axially slidably matched with the outer locking groove 46;

[0153] The inner disk surface of the armrest rotating disk 44 is provided with a locking boss 52, and the outer side wall of the locking boss 52 includes a first boss section 53 and a second boss section 54 from the outer end to the inner end, the first boss section 53 is located on the outer side of the second outer locking section 48, and the groove bottom of the second outer locking section 48 passes through the outer wall of the first boss section 53;

[0154] The outer wall of the locking boss 52 is rotatably matched with the back plate rotating circle, and the inner edge of the outer end of the back plate rotating circle is provided with a first arc segment unlocking groove 65 corresponding to the first outer locking segment 47;

[0155] When the rotating base 41, the handrail rotating disk 44 and the back plate rotating circle are in the folded state, the first arc segment unlocking groove 65 and the second outer locking segment 48 are staggered, and the end of the first arc segment unlocking groove 65 pushes the first single inclined driving tooth to move to the first outer locking segment 47, and the first driving member 59 pushes the first locking member 61 to move toward the outer end of the rotating shaft, so that the first locking member 61 is only adapted to the first outer locking guide segment; the driving plate 3 rotates with the handrail rotating disk 44 to squeeze the wheel lock inclined surface 4 and push the inclined surface push rod 36 to move into the control window 35;

[0156] The wheel lock slope is located on the outside of the luggage body, and the luggage body is arranged on one side corresponding to the wheel lock slope. During the rotation of the driving plate, the plate edge of the driving plate contacts the wheel lock slope and squeezes and pushes the slope push rod to achieve the effect of pushing the slope push rod more easily.

[0157] The back plate rotating circle rotates in the unfolding direction relative to the armrest rotating disk 44 until the first arc segment unlocking groove 65 and the second outer locking segment 48 overlap, and the first spring 58 pushes the first locking member 61 to move toward the inner end of the rotating shaft, so that the first locking member 61 is adapted to the first outer locking guide segment and the second outer locking guide segment at the same time, and the armrest rotating disk 44 is rotated, so that the armrest rotating disk 44 is in the unfolded state and locked relative to the rotating base 41; the driving plate 3 rotates away from the inclined top rod 36 as the armrest rotating disk 44 rotates, and the inclined top rod 36 moves out of the control window 35;

[0158] In this embodiment, the design position of the first single slope is the position where the end of the first arc segment contact groove first contacts the first single slope driving tooth 60 during the folding process of the back panel rotating relative to the armrest 39.

[0159] The outer end surface of the first locking member 61 is provided with a hole groove adapted to the first spring 58 so that the first spring 58 has space for expansion and contraction.

[0160] The side wall of the positioning boss 52 is provided with at least two positioning slots 55;

[0161] The back plate is slidably matched with a spring pin 63 that abuts against the side wall of the positioning boss 52. The front end of the spring pin 63 extends to the positioning slot 55. One end of the positioning slot 55 is provided with an outlet slope, and the spring pin 63 adapts to the outlet slope.

[0162] The driving plate 3 can push the inclined top rod 36 when the armrest 39 is folded to fix the wheel leg assembly in the luggage body. When the armrest 39 is opened, the driving plate 3 moves the inclined top rod 36, the upper section of the guide rail 17 is unlocked, the wheel retreat assembly can be opened and the sliding sleeve 18 is locked to the lower section of the guide rail 17.

[0163] By rotating the back plate in a circle, the end of the first arc segment unlocking groove 65 pushes the first single-bevel driving tooth 60, thereby controlling the first locking piece 61 but being located in the armrest outer cavity groove 45 or simultaneously located in the armrest outer cavity groove 45 and the rotating cavity groove 42.

[0164] By cooperating the spring latch 63 with the positioning slot 55 , the position of the back panel rotation circle relative to the armrest 39 can be conveniently locked to prevent the back panel from rotating.

[0165] In this embodiment, the inclined surface of the positioning slot 55 is located on the side of the back panel rotation circle relative to the folding movement of the armrest turntable 44, and the inclined surface of the spring pin 63 is a hole groove adapted to the inclined surface of the positioning slot 55 so that the second spring 72 has space for expansion and contraction.

[0166] Combination Figure 27-28 As shown, the outer end edge of the backrest 38 is provided with a spring lock tongue 102 that abuts against the inner wall of the receiving groove 2, and the inner wall of the receiving groove 2 is provided with a first lock hole 8 for inserting the spring lock tongue 102;

[0167] The back of the backrest 38 is hinged with a wrench 5, the wrench 5 is provided with a grab hook 6, and the spring lock tongue 102 is provided with a hook hole 7 for the grab hook 6 to hook;

[0168] One end of the first driving cord 9 is connected to the wrench 5, and the other end of the first driving cord 9 is connected to the spring lock tongue 102;

[0169] In the initial state, the backrest 38 is buckled in the storage slot 2, the spring lock tongue 102 is inserted forward into the positioning slot 55, the spring lock tongue 102 pulls the wrench 5 through the first driving line 9, the wrench 5 is against the back of the backrest 38, and the spring lock tongue 102 extends out and is inserted into the first lock hole 8;

[0170] The wrench 5 is turned, and the spring locking tongue 102 is pulled out from the first locking hole 8 , and the wrench 5 pulls the spring locking tongue 102 out of the positioning slot 55 through the first driving wire 9 .

[0171] When the seat needs to be used, the armrest 39, the backrest 38 and the seat board 40 are folded in the storage groove 2 and locked by inserting the spring lock tongue 102 into the first lock hole 8. When the seat needs to be used, the wrench 5 is swung, and the wrench 5 will retract the spring lock tongue 102 from the first lock hole 8 to release the lock in the storage groove 2. At the same time, the spring lock tongue 102 is pulled by the first drive rope 9 to unlock the relative position of the armrest 39 and the backrest 38, thereby realizing that the wrench 5 unlocks the two components at the same time.

[0172] Combination Fig.19 , Fig.21 and Fig.24 As shown, the end surface of the locking boss 52 is provided with an armrest inner cavity groove 49, and the outer surface of the seat plate 40 is provided with a seat plate cavity groove 69, and the armrest inner cavity groove 49 and the seat plate cavity groove 69 are buckled together to form an inner locking cavity;

[0173] The inner lock cavity is provided with a second guide member 70 and an inner lock groove in sequence axially from the armrest inner cavity groove 49 to the seat plate cavity groove 69;

[0174] The second locking member 71 can slide axially but not rotate circumferentially relative to the inner lock cavity through the second guide member 70. The second guide member 30 includes a first inner lock guide section located in the inner cavity groove of the armrest and a second inner lock guide section located in the seat plate cavity groove. A second spring 72 is provided between the second locking member 71 and the seat plate cavity groove 69. The second spring 72 pushes the second locking member 71 to slide toward the outer end side of the inner lock cavity.

[0175] Combination Fig.19 As shown, the inner locking groove includes a first inner locking section 56 and a second inner locking section 57 from the outside to the inside. The first inner locking section 56 is located at the second boss section 54 and connects the second boss section 54 inside and outside. The second inner locking section 57 is located at the seat plate cavity groove 69. Fig.21 and Fig. 22 As shown, a second arc segment unlocking groove 66 is provided at the inner end of the back plate rotating circle, and a groove exiting inclined surface 67 is provided at one end of the second arc segment unlocking groove 66 corresponding to the rotation direction;

[0176] Combination Fig.23 As shown, the side wall of the second locking member 71 is provided with a second single-bevel driving tooth 73, and the second single-bevel driving tooth 73 is passed through the first inner locking section 56 to the second arc segment unlocking groove 66, and the inclined surface of the second single-bevel driving tooth 73 is arranged corresponding to the groove inclined surface 67;

[0177] When the armrest rotating disk 44, the backboard rotating circle and the seat plate 40 rotating disk are in the folded state, the first arc segment unlocking groove 65 and the second inner locking segment 57 are staggered, so that the second single-bevel driving tooth 73 moves to the second inner locking segment 57, and the second locking member 71 moves toward the inner end of the rotating shaft. At this time, the second locking member 71 is only adapted to the second inner locking guide segment;

[0178] The back panel rotates in the unfolding direction relative to the armrest turntable 44 until the second arc segment unlocking groove 66 and the second inner locking segment 57 coincide with each other, and the second spring 72 pushes the second locking member 71 to move toward the outer end of the rotating shaft, so that the second locking member 71 is simultaneously adapted to the first inner locking guide segment and the second inner locking guide segment, and the armrest turntable 44 is rotated so that the armrest turntable 44 is in an unfolded state and locked relative to the rotating base 41.

[0179] The relative positions of the armrest turntable 44 and the seat plate 40 turntable are locked by the second locking piece 71. If the second locking piece 71 can only slide axially but not rotate in a circle relative to the armrest inner groove 49 and the seat plate groove 69, when the second locking piece 71 is only located in the armrest inner groove 49, the armrest turntable 44 and the seat plate 40 turntable can achieve relative rotation. However, if the second locking piece 71 is located in both the armrest inner groove 49 and the seat plate groove 69 at the same time, the relative angles of the armrest turntable 44 and the seat plate 40 turntable will be locked. The axial movement of the second locking member 71 is achieved by the movement of the back panel rotating in a circle. Specifically, when the second arc segment unlocking groove 66 coincides with the first inner locking segment 56, the second single-bevel driving tooth 73 is located in the second arc segment unlocking groove 66, and the second locking member 71 is only located in the armrest inner cavity groove 49. When the back panel is rotated in a circle, the three are expanded, and the groove exit bevel 67 of the second arc segment unlocking groove 66 will push the second single-bevel driving tooth 73 to move toward the seat plate cavity groove 69. The second arc segment unlocking groove 66 is staggered with the first inner locking segment 56, and finally the second locking member 71 is simultaneously located in the armrest inner cavity groove 49 and the seat plate cavity groove 69.

[0180] In this embodiment, when the second single-bevel drive tooth 73 is located in the second arc-segment unlocking groove 66, the back panel rotates to make a folding movement relative to the armrest turntable 44, and the end where the second single-bevel drive tooth 73 contacts the second arc-segment unlocking groove 66 is provided with a groove exit bevel 67, and the bevel of the second single-bevel drive tooth 73 is arranged to adapt to the groove exit bevel 67.

[0181] Combination Fig.29 Shown includes a handle body 74;

[0182] Combination Fig.30 and Fig.31As shown, a handle rotating disk 75 is disposed at the end of the handle body 74, and a handle cavity 76 is disposed on the disk surface of the handle rotating disk 75. A limit pin hole 84 is disposed on the side wall of the handle cavity 76. A spring limit pin 79 pointing into the handle cavity 76 is disposed in the limit pin hole 84. The tail end of the spring limit pin 79 is connected to one end of a driving wire rope 81, and the other end of the driving wire rope 81 extends to the handle body 74.

[0183] The bag body 1 is provided with a base turntable 77 at both ends corresponding to the handle body 74, and the disk surface of the base turntable 77 is provided with a limiting boss 78 corresponding to the handle cavity groove 76; the base turntable 77 is rotatably engaged with the handle cavity groove 76, and the limiting boss 78 is rotatably matched with the handle cavity groove 76, and the side wall of the limiting boss 78 is circumferentially provided with a plurality of limiting slots 80 adapted to the front end of the spring limiting pin 79.

[0184] The handle body 74 of this solution is rotated and matched with the base turntable 77 of the base through the handle turntable 75, so under normal circumstances, the handle body 74 can rotate relative to the base to change the angle. Since the front end of the spring limit pin 79 is adapted to the limit card slot 80 set on the side wall of the limit boss 78, when the front end of the spring limit pin 79 is aligned with the limit card slot 80, the front end of the spring limit pin 79 will be stuck in the limit card slot 80, so that the angle of the handle turntable 75 relative to the base turntable 77 is locked. When the angle of the handle body 74 and the base changes, the front end of the spring limit pin 79 is adapted to different limit card slots 80, so that the state can be locked, and the handle body 74 can be locked at different angles relative to the base. When it is necessary to unlock, the drive cord 81 can be pulled backward to unlock, and the relative position of the handle turntable 75 and the base turntable 77 can be locked again by releasing the drive cord 81.

[0185] The handle cavity 76 is provided with an inner shaft 82 at its axis, and the inner shaft 82 is rotatably matched with the base turntable 77, so that the handle turntable 75 and the base turntable 77 can rotate relatively more stably.

[0186] The side wall of the spring limiting pin 79 is provided with a limiting strip hole 83 along the axial direction, and the limiting strip hole 83 is penetrated with a travel pin, and the end of the travel pin is fixed to the limiting pin hole 84. It is convenient to limit the forward and backward sliding stroke of the spring limiting pin 79.

[0187] The handle body 74 is provided with a squeezing portion 91, and the squeezing portion 91 is longitudinally slidably matched with a driving slider 92, and the driving slider 92 is provided with an squeezing slope 85, and the squeezing portion 91 is transversely slidably matched with an unlocking switch 86, and a squeezing section 87 is provided on one side of the unlocking switch 86, and an unlocking slope 88 adapted to the squeezing slope 85 is provided on the other side of the unlocking switch 86, and an unlocking spring 89 is provided between the unlocking switch 86 and the squeezing portion 91, and the unlocking spring 89 pushes the unlocking switch 86 to move in a direction away from the driving slider 92, and the driving slider 92 slides toward one end of the driving rope 81 to press the unlocking switch 86, and the unlocking slope 88 pushes the squeezing slope 85, so that the driving slider 92 slides toward one end away from the driving rope 81.

[0188] By pushing the extrusion slope 85 through the unlocking slope 88 of the unlocking switch 86, the driving slider 92 can be pushed to slide axially, specifically producing a pulling effect on the driving wire 81, pulling the driving slider 92 to move, and the control is simpler and more efficient.

[0189] The two ends of the handle body 74 are respectively provided with handle cavity grooves 76, and the driving sliders 92 are respectively provided in the two handle cavity grooves 76. The two driving ropes 81 extend from the two driving sliders 92 to the extrusion portion 91 respectively, and the ends of the two driving ropes 81 are respectively connected to the two driving sliders 92. The unlocking switch 86 is symmetrically provided with two unlocking inclined surfaces 88, and the two unlocking inclined surfaces 88 are arranged one-to-one corresponding to the two driving sliders 92.

[0190] The two unlocking slopes 88 and the two driving sliders 92 can realize the simultaneous control of the two driving wires 81 , and the pressure on both sides of the unlocking switch 86 is more balanced.

[0191] The extrusion portion 91 is disposed in the sliding positioning groove 90, one side of the unlocking switch 86 slides and extends from the notch of the sliding positioning groove 90 to the inside, the driving slider 92 slides and cooperates in the sliding positioning groove 90 along the length direction, and the unlocking spring 89 is disposed between the two driving sliders 92, and the two ends of the unlocking spring 89 respectively abut against the bottom of the sliding positioning groove 90 and the unlocking switch 86, so as to facilitate more stable sliding of the two driving sliders 92.

[0192] The handle body 74 is provided with an inner channel, and the driving wire 81 extends from the driving slider 92 through the inner channel to the sliding positioning groove 90 to avoid interference with external structures.

[0193] Combination Fig.32 and Fig.33As shown, the bag body is provided with a storage bin 10, the opening of the storage bin 10 is provided with a box cover 11, one end of the box cover 11 is hinged to the storage bin 10, and the other end of the box cover 11 is provided with a knob switch 12;

[0194] Locking rods 14 are respectively provided on both sides of the knob switch 12, and the locking rods 14 are slidably matched with the box cover 11. A pin hook is provided at the inner end of the locking rod 14, and the knob switch 12 is provided with a V-shaped contact surface 13 for the pin hook to pull and hang; an outward push spring 15 is provided between the locking rod 14 and the box cover 11, and the outward push spring 15 pushes the locking rod 14 outward from the box cover 11, and the inner wall of the storage bin 10 is provided with a second lock hole for inserting the outer end of the locking rod 14. When the knob switch 12 is rotated, the V-shaped contact surface 13 drives the pin hook to retract the locking rod 14 inward.

[0195] Under normal circumstances, the outer end of the locking rod 14 cooperates with the second locking hole to achieve the closed locking of the box cover 11 of the storage bin 10. When it needs to be opened, the knob switch 12 is turned, and the V-shaped contact surface 13 rotates to drive the pin hook inward, that is, drive the locking rod 14 to slide inward.

[0196] Beneficial effects of the present invention:

[0197] This solution cleverly combines luggage and seats. It can be folded to carry items while providing the function of a seat. Children can be easily carried while carrying luggage. The overall structure adopts a foldable storage method. The seat can be stored when not in use to avoid occupying external space and avoiding carrying a suitcase and a cart at the same time, making going out more portable.

[0198] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0199] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. Luggage type cart, characterized in that: The bag comprises a luggage body, wherein the luggage body is provided with a wheel leg assembly, a seat assembly and a handle assembly; The wheel-leg assembly is arranged downwardly of the bag body, and the wheel-leg assembly is used for moving the bag body; the seat assembly is arranged on the upper front side of the bag body, and the seat assembly is used for providing a folding seat; the handle assembly is arranged on the rear side of the bag body, and is used for pushing the bag body to move by hand.

2. The luggage type cart according to claim 1, characterized in that: A set of wheel leg assemblies are respectively arranged on both sides of the bag body; The wheel-leg assembly comprises a guide rail (17), a sliding sleeve (18), a wheel rod (21) and a roller (23); The guide rail (17) is vertically arranged on the luggage body, the slide sleeve (18) is slidably matched with the guide rail (17), and a locking mechanism is arranged between the guide rail (17) and the slide sleeve (18), and the locking mechanism fixes the slide sleeve (18) to the upper section or the lower section of the guide rail (17); The upper ends of the two wheel rods (21) are respectively located on both sides of the guide rail (17), and the lower ends of the two wheel rods (21) are inclined in opposite directions. The wheel rods (21) are slidably matched relative to the luggage body. The upper ends of the wheel rods (21) are connected to the sliding sleeve (18) through a connecting rod (22), and a roller (23) is arranged at the lower end of the wheel rod (21).

3. The luggage-type cart according to claim 2, characterized in that: The locking mechanism comprises a sliding rod (25), a first locking block (28) and a second locking block (31); The sliding rod (25) is axially slidably fitted inside the guide rail (17), and a reset elastic member (34) is provided between the sliding rod (25) and the guide rail (17), and the reset elastic member (34) slides the sliding rod (25) toward the first end of the guide rail (17); The side wall of the guide rail (17) is provided with a control window (35), and the side wall of the sliding rod (25) is provided with a vertical push inclined surface (37); the control window (35) is slidably matched with an inclined surface push rod (36), and the front end of the inclined surface push rod (36) is arranged corresponding to the vertical push inclined surface (37); The first locking block (28) and the second locking block (31) are respectively arranged at the upper section and the lower section corresponding to the guide rail (17). The first locking block (28) is provided with a first control inclined surface (29) and a first pin rod portion (30); the side wall of the sliding rod (25) is provided with a first locking inclined surface (26) adapted to the first control inclined surface (29); the upper side wall of the guide rail (17) is provided with a first locking hole (93) adapted to the first pin rod portion (30); and the first locking block (28) is provided with a first locking elastic member (94) pushed toward the first locking hole (93); The second locking block (31) is provided with a second control inclined surface (32) and a second pin rod portion (33); the side wall of the sliding rod (25) is provided with a second locking inclined surface (27) adapted to the second control inclined surface (32); the lower side wall of the guide rail (17) is provided with a second locking hole (95) adapted to the second pin rod portion (33); and the second locking block (31) is provided with a second locking elastic member (96) pushed toward the second locking hole (95); Only one set of the first locking inclined surface (26) and the first control inclined surface (29), and the second locking inclined surface (27) and the second control inclined surface (32) are aligned at the same time; When the inclined push rod (36) slides toward the end away from the vertical push inclined surface (37); Under the push of the reset elastic member (34), the sliding rod (25) slides toward the lower section; the first locking inclined surface (26) pushes the first control inclined surface (29), the first locking inclined surface (26) and the first control inclined surface (29) are in contact and staggered relation, the first locking block (28) slides in a direction away from the first locking hole (93), and the first pin rod portion (30) retracts into the first locking hole (93); the second locking inclined surface (27) and the second control inclined surface (32) are in contact and aligned relation, the second locking elastic member (96) pushes the second locking block (31) to slide toward the second locking hole (95), and the second pin rod portion (33) extends from the second locking hole (95) to the outside; When the inclined push rod (36) slides toward one end close to the vertical push inclined surface (37); When the inclined push rod (36) pushes the vertical push inclined surface (37), the sliding rod (25) slides toward the upper section; the second locking inclined surface (27) pushes the second control inclined surface (32) to contact and align, the second locking inclined surface (27) pushes the second control inclined surface (32) to contact and stagger, the second locking block (31) slides in a direction away from the second locking hole (95), and the second pin rod portion (33) retracts into the second locking hole (95); the first locking inclined surface (26) contacts and aligns with the first control inclined surface (29), the first locking elastic member (94) pushes the first locking block (28) to slide toward the first locking hole (93), and the first pin rod portion (30) extends from the first locking hole (93) to the outside; The sliding sleeve (18) is provided with an outer hole (19) adapted to the first pin portion (30) or the second pin portion (33).

4. The luggage-type cart according to claim 3, characterized in that: A storage groove (2) is arranged on the front exterior of the luggage body, and rotating bases (41) are arranged on both sides of the upper end of the storage groove (2), and the seat assembly comprises an armrest (39), a backrest (38) and a seat plate (40), and armrest turntables (44) are arranged at both ends of the armrest (39) corresponding to two rotating bases (41), and back plate turntables are arranged at both sides of the backrest (38) corresponding to two rotating bases (41), and seat plate (40) turntables are arranged at both sides of the seat plate (40) corresponding to two rotating bases (41); the rotating base (41), the armrest turntable (44), the back plate turntable and the seat plate (40) turntable are respectively rotated in coordination with each other; The inner disk surface of the rotating base (41) is provided with a rotating cavity groove (42); the outer disk surface of the armrest rotating disk (44) is provided with an armrest outer cavity groove (45); The rotating cavity groove (42) and the armrest outer cavity groove (45) are buckled together to form an outer locking cavity; A first locking member (61) and a first driving member (59) are distributed from outside to inside in the outer lock cavity; The first driving member (59) is located in the armrest outer cavity groove (45), and the first driving member (59) can slide axially but cannot rotate circumferentially relative to the armrest outer cavity groove (45); A first guide member (43) is axially arranged on the side wall of the outer lock cavity from the rotating cavity groove (42) to the armrest outer cavity groove (45), and the first locking member (61) can slide axially but cannot rotate circumferentially relative to the outer lock cavity through the first guide member (43); A first spring (58) is arranged between the first locking member (61) and the rotating cavity groove (42), and the first spring (58) pushes the first locking member (61) and the first driving member (59) to slide toward the inner end side of the outer locking cavity, and the first guide member includes a first outer locking guide section located in the rotating cavity groove (42) and a second outer locking guide section located in the armrest outer cavity groove; During the rotation of the back plate, the first driving member (59) is pushed to slide toward the outer end of the rotating shaft, so that the first locking member (61) is only adapted to the first outer locking guide section or is adapted to the first outer locking guide section and the second outer locking guide section at the same time.

5. The luggage-type cart according to claim 4, characterized in that: A driving plate (3) is arranged outside the handrail turntable (44), the driving plate (3) is arranged at an outer end of the control window (35), the outer end of the inclined top rod (36) extends to the outside of the control window (35), and the outer end of the inclined top rod (36) is provided with a wheel lock inclined surface (4) corresponding to the driving plate (3); The side wall of the armrest outer cavity groove (45) is provided with an outer locking groove (46), and the outer locking groove (46) includes a first outer locking section (47) and a second outer locking section (48), and the first outer locking section (47) is located at the outer end side of the rotating shaft relative to the second outer locking section (48); The inner end surface of the first driving member (59) is provided with a first single-bevel driving tooth (60) corresponding to the outer locking groove (46), and the first single-bevel driving tooth (60) is axially slidably matched with the outer locking groove (46); The inner disk surface of the handrail rotating disk (44) is provided with a locking boss (52), and the outer side wall of the locking boss (52) includes a first boss section (53) and a second boss section (54) from the outer end to the inner end, the first boss section (53) is located on the outer side of the second outer locking section (48), and the groove bottom of the second outer locking section (48) passes through the outer wall of the first boss section (53); The outer wall of the locking boss (52) is rotatably matched with the back plate rotating circle, and a first arc segment unlocking groove (65) is provided at the inner edge of the outer end of the back plate rotating circle corresponding to the first outer locking segment (47); When the rotating base (41), the handrail rotating disk (44) and the back plate rotating circle are in a folded state, the first arc segment unlocking groove (65) and the second outer locking segment (48) are staggered, and the end of the first arc segment unlocking groove (65) pushes the first single-bevel driving tooth (60) to move to the first outer locking segment (47), and the first driving member (59) pushes the first locking member (61) to move toward the outer end of the rotating shaft, so that the first locking member (61) is only adapted to the first outer locking guide segment; the driving plate (3) rotates the extrusion wheel lock bevel (4) along with the handrail rotating disk (44) and pushes the bevel push rod (36) to move into the control window (35); The back plate rotating circle rotates in the unfolding direction relative to the handrail rotating disk (44) until the first arc segment unlocking groove (65) and the second outer locking segment (48) overlap, and the first spring (58) pushes the first locking member (61) to move toward the inner end of the rotating shaft, so that the first locking member (61) is simultaneously adapted to the first outer locking guide segment and the second outer locking guide segment, and the handrail rotating disk (44) is rotated to make the handrail rotating disk (44) in the unfolded state and locked relative to the rotating base (41); the driving plate (3) rotates away from the inclined top rod (36) as the handrail rotating disk (44) rotates, and the inclined top rod (36) moves out of the control window (35); The side wall of the positioning boss (52) is provided with at least two positioning slots (55); The back plate rotating circle is slidably matched with a spring latch (63) that abuts against the side wall of the locking boss (52), and the front end of the spring latch (63) extends to the positioning slot (55).

6. The luggage-type cart according to claim 5, characterized in that: The outer end edge of the backrest (38) is provided with a spring lock tongue (102) that abuts against the inner wall of the storage groove (2), and the inner wall of the storage groove (2) is provided with a first lock hole (8) for inserting the spring lock tongue (102); A wrench (5) is hinged on the back of the backrest (38), the wrench (5) is provided with a grab hook (6), and the spring lock tongue (102) is provided with a hook hole (7) for the grab hook (6) to hook; One end of a first driving cord (9) is connected to the wrench (5), and the other end of the first driving cord (9) is connected to the spring lock tongue (102); In the initial state, the backrest (38) is buckled in the storage slot (2), the spring lock tongue (102) is inserted forward into the positioning slot (55), the spring lock tongue (102) pulls the wrench (5) through the first driving wire (9), the wrench (5) is pressed against the back of the backrest (38), and the spring lock tongue (102) is extended and inserted into the first lock hole (8); The wrench (5) is turned, and the spring lock tongue (102) is pulled out from the first lock hole (8). The wrench (5) pulls the spring lock tongue (102) out of the positioning slot (55) through the first driving wire rope (9).

7. The luggage-type cart according to claim 5, characterized in that: The end surface of the locking boss (52) is provided with an armrest inner cavity groove (49), the outer surface of the seat plate (40) turntable is provided with a seat plate cavity groove (69), and the armrest inner cavity groove (49) and the seat plate cavity groove (69) are buckled together to form an inner locking cavity; The inner locking cavity is provided with a second guide member (70) and an inner locking groove in sequence axially from the armrest inner cavity groove (49) to the seat plate cavity groove (69); The second locking member (71) can slide axially but cannot rotate circumferentially relative to the inner locking cavity through the second guide member (70), the second guide member comprises a first inner locking guide section located in the inner cavity groove of the armrest and a second inner locking guide section located in the seat plate cavity groove, a second spring (72) is arranged between the second locking member (71) and the seat plate cavity groove (69), and the second spring (72) pushes the second locking member (71) to slide toward the outer end side of the inner locking cavity; The inner locking groove comprises a first inner locking section (56) and a second inner locking section (57), the first inner locking section (56) is located at the second boss section (54) and connects the second boss section (54) inside and outside, the second inner locking section (57) is located at the seat plate cavity groove (69), a second arc segment unlocking groove (66) is arranged along the inner end of the back plate rotation circle, and one end of the second arc segment unlocking groove (66) is arranged with a groove exit inclined surface (67) corresponding to the rotation direction; The side wall of the second locking member (71) is provided with a second single-bevel driving tooth (73), the second single-bevel driving tooth (73) is passed through the first inner locking section (56) to the second arc-segment unlocking groove (66), and the inclined surface of the second single-bevel driving tooth (73) is arranged corresponding to the groove exit inclined surface (67); When the armrest rotating disc (44), the backboard rotating disc and the seat plate (40) rotating disc are in a folded state, the first arc segment unlocking groove (65) and the second inner locking segment (57) are staggered, so that the second single-bevel driving tooth (73) moves to the second inner locking segment (57), and the second locking member (71) moves toward the inner end of the rotating shaft. At this time, the second locking member (71) is only adapted to the second inner locking guide segment; The back panel rotating circle rotates in the unfolding direction relative to the armrest rotating disk (44) until the second arc segment unlocking groove (66) and the second inner locking segment (57) overlap, and the second spring (72) pushes the second locking member (71) to move toward the outer end of the rotating shaft, so that the second locking member (71) is simultaneously adapted to the first inner locking guide segment and the second inner locking guide segment, and the armrest rotating disk (44) is rotated so that the armrest rotating disk (44) is in an unfolded state and locked relative to the rotating base (41).

8. The luggage-type cart according to claim 1, characterized in that: The handle assembly includes a handle body (74); A handle turntable (75) is provided at the end of the handle body (74), a handle cavity (76) is provided on the disk surface of the handle turntable (75), a limit pin hole (84) is provided on the side wall of the handle cavity (76), a spring limit pin (79) pointing into the handle cavity (76) is provided in the limit pin hole (84), the tail end of the spring limit pin (79) is connected to one end of the driving wire rope (81), and the other end of the driving wire rope (81) extends to the handle body (74); The bag body (1) is provided with a base turntable (77) at both ends corresponding to the handle body (74), and a limit boss (78) is provided on the disk surface of the base turntable (77) corresponding to the handle cavity groove (76); the base turntable (77) is rotatably engaged with the handle cavity groove (76), and the limit boss (78) is rotatably engaged with the handle cavity groove (76), and the side wall of the limit boss (78) is circumferentially provided with a plurality of limit slots (80) adapted to the front end of the spring limit pin (79).

9. The luggage-type cart according to claim 8, characterized in that: The handle body (74) is provided with a squeezing portion (91), and the squeezing portion (91) is longitudinally slidably matched with a driving slider (92), and the driving slider (92) is provided with a squeezing inclined surface (85). The squeezing portion (91) is transversely slidably matched with an unlocking switch (86), and a squeezing section (87) is provided on one side of the unlocking switch (86), and an unlocking inclined surface (88) adapted to the squeezing inclined surface (85) is provided on the other side of the unlocking switch (86). An unlocking spring (89) is provided between the unlocking switch (86) and the squeezing portion (91), and the unlocking spring (89) pushes the unlocking switch (86) to move in a direction away from the driving slider (92), and the driving slider (92) slides toward one end of the driving wire rope (81) to press the unlocking switch (86), and the unlocking inclined surface (88) pushes the squeezing inclined surface (85), so that the driving slider (92) slides toward one end away from the driving wire rope (81).

10. The luggage-type cart according to claim 9, characterized in that: The bag body is provided with a storage bin (10), the opening of the storage bin (10) is provided with a box cover (11), one end of the box cover (11) is hinged to the storage bin (10), and the other end of the box cover (11) is provided with a knob switch (12); The two sides of the knob switch (12) are respectively provided with locking rods (14), the locking rods (14) are slidably matched with the box cover (11), the inner end of the locking rod (14) is provided with a pin hook, and the knob switch (12) is provided with a V-shaped contact surface (13) for the pin hook to pull and hang; an outward push spring (15) is provided between the locking rod (14) and the box cover (11), the outward push spring (15) pushes the locking rod (14) outward of the box cover (11), and the inner wall of the storage bin (10) is provided with a second lock hole for the outer end of the locking rod (14) to be inserted, and when the knob switch (12) is rotated, the V-shaped contact surface (13) drives the pin hook to retract the locking rod (14) inward.

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