The load-bearing device includes a convertible seat / reclining support mechanism, a seat, and the load-bearing device itself.

Abstract

This invention provides a convertible support mechanism for a seat and a sleeping compartment, a seat, and a support device. The support includes a support frame rotatably mounted on fixed seats on both sides of the support device via a rotating base, allowing the support frame to pivot between a seat position and a sleeping compartment position. A conversion component on the rotating base drives a locking member away from the fixed seats via a drive lever, unlocking the support frame and allowing it to pivot; or the drive lever drives the locking member closer to the fixed seats, locking the support frame after pivoting. Thus, during the conversion between seat and sleeping compartment modes, the simple structure of the drive lever connecting the locking member allows for easy control of the pivoting of the support frame via the locking member, achieving a simple structure and effortless operation.

Description

Technical Field

[0001] The present invention provides a sitting and lying dual-purpose support conversion mechanism for a support device, particularly a sitting and lying dual-purpose support conversion mechanism, a seat, and a support device that can be converted into a seat mode and a sleeping box mode. Background Technology

[0002] It is known that strollers for infants and toddlers mainly consist of a frame and a carrier mounted on the frame. Adults can place the infant or toddler in the carrier and then push the frame to move around easily. The carrier can be a sleeping box for the infant or toddler to lie down, or a seat for the infant or toddler to sit.

[0003] To make strollers more comfortable for infants and toddlers, many stroller seats are designed with a fully reclined backrest, allowing the infant or toddler to lie flat. However, existing structures for reclining backrests are complex to implement and inconvenient to operate. Furthermore, the shift in the center of gravity during the backrest recline process makes the stroller prone to tipping over, endangering the safety of the infant or toddler inside. Summary of the Invention

[0004] In view of the above-mentioned known technologies, a convertible support mechanism for a seat and a sleeping box has been developed, along with a seat and a support device, so that the conversion mechanism of the support device for converting between seat mode and sleeping box mode can achieve the effect of simple structure and labor-saving operation.

[0005] To achieve the above objectives, the present invention provides a convertible support mechanism for a support device that can be used in both sitting and lying positions. The support device includes a main frame. The convertible mechanism includes two fixed seats, a support bracket, and a conversion assembly. The conversion assembly includes a locking element and a driving lever, wherein:

[0006] The two fixed seats are respectively fixed to both sides of the main frame. At least one of the fixed seats has a seat mode positioning part and a sleeping box mode positioning part, and the seat mode positioning part and the sleeping box mode positioning part are separated by an angle from the fixed seat.

[0007] The support bracket has rotating seats on both sides corresponding to each of the fixed seats. Each rotating seat is rotatably mounted on the corresponding fixed seat. The support bracket can pivot between the seat position and the sleeping box position as the rotating seats rotate.

[0008] The locking member is connected to the drive lever and is disposed on at least one of the rotating seats. When the drive lever is pulled by an external force, the locking member is driven to move away from the corresponding fixed seat, thereby unlocking the support bracket and allowing it to pivot between the seat position and the sleeping box position. After the external force disappears, the locking member is driven to move closer to the corresponding fixed seat and engages with one of the seat mode positioning part and the sleeping box mode positioning part, thereby locking the support bracket.

[0009] In a preferred embodiment, the locking member includes an actuating part and an engaging part. The engaging part extends laterally from one end of the actuating part. The seat mode positioning part and the sleeping box mode positioning part are respectively locking grooves. The locking member engages and locks by inserting the engaging part into one of the seat mode positioning part and the sleeping box mode positioning part.

[0010] In a preferred embodiment, the drive lever has a force-applying end and a resistance end that are far apart from each other, and a shaft connection is provided between the force-applying end and the resistance end. The shaft connection is shafted to the provided rotating seat. The conversion assembly includes a traction member connected to the force-applying end, and the resistance end is pivotally connected to the actuating part. The traction member drives the drive lever to swing along the axis of the shaft connection, and the resistance end pulls the actuating part to drive the locking member to move.

[0011] In a preferred embodiment, the conversion assembly includes a reset member extending along the direction of displacement of the locking member, with one end abutting against the end of the actuating part away from the engaging part, and the other end abutting against the rotating seat. When the driving lever drives the locking member to be displaced until the support bracket is unlocked, the actuating part applies pressure to the reset member to generate a reset spring force. When the driving lever stops, the locking member is returned to the position where the support bracket is locked by the reset spring force.

[0012] In a preferred embodiment, the reset member is a compression spring, and the end of the actuating part away from the engaging part has a protrusion for the reset member to be fitted.

[0013] In a preferred embodiment, the actuating part has a rod portion that extends on the same side as the engaging part, and the driving lever has a driving hole at the resisting end through which the rod portion passes and is pivotally connected to the actuating part.

[0014] In a preferred embodiment, the shaft connection is a shaft hole, the rotating seat on which the drive lever is provided has a pivot, the pivot is provided corresponding to the shaft connection, and the drive lever is shafted to the rotating seat by passing through the pivot through the shaft connection.

[0015] In a preferred embodiment, the conversion assembly includes a leverable operating member disposed on the support bracket, and a traction member is a cable connected at one end to the force-applying end and at the other end to the operating member, so that the operating member is levered to drive the force-applying end via the traction member, and the actuating part is linked via the resistance end to drive the locking member to move.

[0016] In a preferred embodiment, the operating member includes a lever and two sliders. The lever is pivotally mounted on the support bracket and has two guide rails inclined in opposite directions. The two sliders are disposed in the support bracket, each slider having a guide groove that respectively engages with the respective guide portion, and each slider having a connecting portion that connects to one end of the traction member. When the lever is actuated, the two sliders are guided by the two guide rails to move closer to each other, thereby actuating the traction member and driving the force-applying end.

[0017] In a preferred embodiment, the locking member further includes an extension and a blocking portion. The extension extends from the end of the engaging portion away from the actuating portion, and the extension and the actuating portion extend in opposite directions. The blocking portion is formed at the end of the extension away from the engaging portion and is hook-shaped. The side wall of the rotating seat has an opening, and the rotating seat has a spring arm extending from the side wall in the opening. The spring arm has a convex portion protruding laterally from the side wall at its end. When the locking member engages with one of the seat mode positioning portion and the sleeping box mode positioning portion, the opening and the extension are aligned with each other, and the convex portion is pressed to cause the spring arm to move from the opening toward the extension, and the spring arm blocks the blocking portion to prevent the locking member from disengaging from the support bracket.

[0018] In a preferred embodiment, each fixed seat has a first side surface, and each rotating seat has a second side surface. When each fixed seat and its corresponding rotating seat are pivotally mounted, the first side surface and the second side surface are opposite each other. One of the first side surface and the second side surface has a convex limiting portion, and the other has a concave groove corresponding to the limiting portion. The groove is arc-shaped and has a predetermined arc length. The limiting portion moves within the groove for the predetermined arc length, and the travel of the limiting portion restricts the angle at which each rotating seat can rotate on the pivoted fixed seat.

[0019] In a preferred embodiment, the angle is 30 to 45 degrees.

[0020] In a preferred embodiment, the support frame is provided with a canopy.

[0021] In a preferred embodiment, the support bracket has accessories attached to the rotating seats on both sides when the seat is in the seat position.

[0022] In a preferred embodiment, the accessory is a plate or a handrail.

[0023] Another embodiment of the present invention provides a seat, including a support frame, two fixed seats, and a conversion assembly. At least one of the fixed seats has a seat mode positioning portion and a sleeping box mode positioning portion, which are spaced apart from each other at an angle. Rotary seats are provided on both sides of the support frame corresponding to each of the fixed seats, and each rotary seat is rotatably disposed on its corresponding fixed seat. The support frame can pivot between a seat position and a sleeping box position as the rotary seats rotate. The conversion assembly includes a locking member connected to a drive lever and disposed on at least one of the rotary seats. When the drive lever is pulled by an external force, the locking member is driven to displace away from the corresponding fixed seat, thereby unlocking the support frame and allowing it to pivot between the seat position and the sleeping box position. After the external force disappears, the locking member is driven to displace closer to the corresponding fixed seat and engages with one of the seat mode positioning portion and the sleeping box mode positioning portion, thereby locking the support frame.

[0024] Another embodiment of the present invention provides a support device, characterized in that it is equipped with the aforementioned seat.

[0025] Therefore, the sitting and reclining support conversion mechanism, seat and support device provided by the present invention, through a simple structure of connecting the locking member and the driving lever, thereby causing the driving lever to drive the locking member to move, can complete the conversion and locking of the support support when switching between seat mode and sleeping box mode, so as to achieve the effect of simple structure and labor-saving operation of the support support switching and locking between seat mode and sleeping box mode. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the support device used in the embodiment of the present invention in seat mode.

[0028] Figure 2 This is a schematic diagram of the carrying device used in the sleeping box mode in an embodiment of the present invention.

[0029] Figure 3 This is a perspective view of the assembly of the fixed base and the rotating base of the support bracket according to an embodiment of the present invention.

[0030] Figure 4 This is a perspective view of the connection between the locking element and the driving lever in an embodiment of the present invention.

[0031] Figure 5 This is a perspective view of the operating component disposed on the support bracket according to an embodiment of the present invention.

[0032] Figure 6 This is a schematic diagram of the assembly of the operating component, including the lever and the slider, in the support bracket according to an embodiment of the present invention.

[0033] Figure 7 This is a perspective view of a rotating seat according to an embodiment of the present invention, which has an opening in the side wall and a spring arm.

[0034] Figure 8 This is a cross-sectional schematic diagram showing that when the locking member is locked in position according to an embodiment of the present invention, a spring arm forms a blockage against the blocking part.

[0035] Figure 9 This is a schematic diagram of a fixed seat with a limiting part in the groove of a rotating seat to limit the rotation angle of the rotating seat according to an embodiment of the present invention.

[0036] Figure 10 This is a schematic diagram of the locking member of the present invention engaging and locking with the seat mode positioning part in the locking position when in seat mode.

[0037] Figure 11 yes Figure 10 A schematic diagram showing how the driving lever is driven by the traction component, which in turn drives the locking component to the unlocked position.

[0038] Figure 12 yes Figure 11 A diagram illustrating how the swivel seat rotates from the seat position to the sleeping box position. And...

[0039] Figure 13 yes Figure 12 A schematic diagram showing the locking element being reset to the locked position and engaging with the sleeping box mode positioning part.

[0040] In the attached figures, the following labels are used:

[0041] 100 Bracket Conversion Mechanism

[0042] 10 Fixtures

[0043] 11 Seat Mode Positioning Unit

[0044] 12 Sleeping Box Mode Positioning Unit

[0045] 13 First side view

[0046] 14 Limiting section

[0047] 20 Support brackets

[0048] 21 Rotary seat

[0049] 211 Pivot

[0050] 212 Sidewall

[0051] 213 Opening

[0052] 214 Spinning Arm

[0053] 215 convex part

[0054] 216 Second side view

[0055] 217 Groove

[0056] 22 Canopy Frame

[0057] 23 plates

[0058] 30 Conversion Components

[0059] 40 Locking parts

[0060] 41. Action Section

[0061] 411 Convex pin

[0062] 412 Bar

[0063] 42. Card-connecting part

[0064] 43 Extension

[0065] 44. Blocking section

[0066] 50 Drive Lever

[0067] 51. Force application end

[0068] 52 Resistance end

[0069] 521 drive hole

[0070] 53 Shaft Joint

[0071] 60 Operating components

[0072] 61. Actuating part

[0073] 611 Guide Rail Section

[0074] 62 sliders

[0075] 621 Guide trench

[0076] 70 Traction Components

[0077] 80 Reset component

[0078] 200 main frame

[0079] 201 Handrail

[0080] P1 Seat Position

[0081] P2 Sleeping box location

[0082] P3 Lock Position

[0083] P4 Unlock Location

[0084] A side wall Detailed Implementation

[0085] Please refer to Figures 1 to 13 This invention provides a convertible support mechanism 100 for a carrying device that can be used as a sitting or reclining position. The carrying device, in this example, is a baby stroller designed to carry infants and toddlers and can be pushed around. It includes a main frame 200, and the conversion mechanism 100 is located on the main frame 200. The conversion mechanism 100 can be in the form of a seat, installed on the main frame 200 of the carrying device in this embodiment, thereby providing a seat mode (e.g., reclining). Figure 1 (as shown) and sleeping box mode (as shown) Figure 2 The switch (as shown) allows infants to sit in a seat mode and lie down in a sleeping box mode.

[0086] The bracket conversion mechanism 100 includes two fixed seats 10, a load-bearing bracket 20, and a conversion assembly 30, wherein:

[0087] like Figure 1 , 2 As shown, two fixed seats 10 are respectively fixed to both sides of the main frame 200. In this embodiment, each fixed seat 10 has a seat mode positioning part 11 and a sleeping box mode positioning part 12, and the seat mode positioning part 11 and the sleeping box mode positioning part 12 are spaced apart from each other by an angle (e.g., ...). Figure 3 (As shown).

[0088] like Figure 1 , 2 As shown, rotating seats 21 are provided on both sides of the support bracket 20 corresponding to each fixed seat 10. Each rotating seat 21 is rotatably mounted on its corresponding fixed seat 10. The support bracket 20 can rotate with the rotating seat 21 to the seat position P1 (e.g., Figure 1 (as shown) and the location of the sleeping box P2 (as shown) Figure 2 As shown, the support frame 20 can be fitted with a seat cover (not shown). This seat cover allows the infant to sit comfortably in the seat position P1, and allows the infant to lie flat in the sleeping box position P2. Therefore, when the support frame 20 is pivoted to the seat position P1 and locked, it is in the aforementioned seat mode; similarly, when the support frame 20 is pivoted to the sleeping box position P2 and locked, it is in the aforementioned sleeping box mode. Figure 1 , 2As shown, the support bracket 20 of this embodiment is provided with a canopy frame 22, and accessories 23, such as plates or armrests, can be installed on the rotating seats 21 on both sides of the support bracket 20, especially when the support bracket 20 is in the seat position P1.

[0089] The conversion component 30, in this embodiment, has a locking element 40 connected to the drive lever 50 on each rotating seat 21 (e.g., Figure 4 (As shown). When the drive lever 50 is pulled by an external force, the drive lever 50 drives the locking member 40 to move away from the corresponding fixed seat 10, thereby unlocking the support bracket 20. At this time, the support bracket 20 is allowed to pivot between the seat position P1 and the sleeping box position P2. After the external force disappears, the locking member 40 will be driven to move closer to the corresponding fixed seat 10 and engage with one of the seat mode positioning part 11 and the sleeping box mode positioning part 12, thereby locking the support bracket 20. At this time, the support bracket 20 cannot pivot between the seat position P1 and the sleeping box position P2.

[0090] Specifically, such as Figures 9 to 12 As shown, the locking member 40 can linearly move between the locked position P3 and the unlocked position P4 by the drive lever 50. When the support bracket 20 pivots to the seat position P1, the locking member 40 can align with the seat mode positioning part 11, and the drive lever 50 drives the locking member 40 to move to the locked position P3 to engage with the seat mode positioning part 11. Alternatively, when the support bracket 20 pivots to the sleeping box position P1, the locking member 40 can align with the sleeping box mode positioning part 12, and the drive lever 50 drives the locking member 40 to move to the locked position P3 to engage with the sleeping box mode positioning part 12. Furthermore, when the drive lever 50 drives the locking member 40 to move to the unlocked position P4, the locking member 40 disengages from either the seat mode positioning part 11 or the sleeping box mode positioning part 12, and the support bracket 20 can freely pivot between the seat position P1 and the sleeping box position P2.

[0091] In the embodiments described above, both fixed seats 10 have a seat mode positioning part 11 and a sleeping box mode positioning part 12, and each rotating seat 21 is provided with a locking member 40 and a driving lever 50, so that the two fixed seats 10 and the corresponding two rotating seats 20 can be locked together by the locking member 40 to engage and lock one of the seat mode positioning part 11 and the sleeping box mode positioning part 12. However, the present invention is not limited to this. For example, only the fixed seat 10 has a seat mode positioning part 11 and a sleeping box mode positioning part 12, and the rotating seat 21 is provided with a locking member 40 and a driving lever 50 corresponding to the fixed seat 10, which can also achieve the effect of locking one of the seat mode positioning part 11 and the sleeping box mode positioning part 12 by the locking member 40.

[0092] In a preferred embodiment, such as Figure 3As shown, the fixing seat 10 is integrally formed, while the seat mode positioning part 11 and the sleeping box mode positioning part 12 are respectively the grooves formed by the recesses of the fixing seat 10. For example... Figure 4 As shown, the locking member 40 in this embodiment includes an actuating part 41 and an engaging part 42. The engaging part 42 extends laterally from one end of the actuating part 41. When the locking member 40 is aligned with the seat mode positioning part 11 and moved to the locking position P3, the engaging part 42 is inserted into the seat mode positioning part 11 to engage and lock (e.g., Figure 10 As shown), at this time, the support bracket 20 is positioned in the seat position P1, which is the seat mode; and when the locking member 40 is aligned with the sleeping box mode positioning part 12 and also moves to the locking position P3, the engaging part 42 is inserted into the sleeping box mode positioning part 12 to engage and lock (as shown). Figure 13 As shown), at this time, the support bracket 20 is positioned at the sleeping box position P2 and is in the sleeping box mode.

[0093] like Figure 4 As shown, the drive lever 50 has a force-applying end 51 and a resistance end 52, which are far apart from each other. A shaft connection 53 is provided between the force-applying end 51 and the resistance end 52, which is shafted to the provided rotating seat 21. Preferably, in this embodiment, the shaft connection 53 is a shaft hole, and the rotating seat 21 of the drive lever 50 has a pivot 211 (e.g., ...). Figures 10 to 13 As shown), the pivot 211 is provided for the corresponding shaft connection 53. The drive lever 50 passes through the pivot 211 via the shaft connection 53, so that the drive lever 50 is shaft-connected to the provided rotating seat 21.

[0094] like Figure 5 , 6 As shown, the conversion assembly 30 includes a leverable operating member 60 and a traction member 70. The operating member 60 is located on the support bracket 20, and in this embodiment, the operating member 60 is approximately located at the handrail 201 of the main frame 200. In this embodiment, the traction member 70 is a cable. One end of the traction member 70 is connected to the force-applying end 51 and the other end is connected to the operating member 60. The resistance end 52 is pivotally connected to the actuating part 41. By levering the operating member 60, the force-applying end 51 is driven by the traction member 70, thereby causing the drive lever 50 to swing along the axis of the shaft connection 53. The locking member 40 is moved between the locked position P3 and the unlocked position P4 via the resistance end 52 and the actuating part 41.

[0095] like Figure 6As shown, the operating member 60 in this embodiment further includes a lever 61 and two sliders 62. The lever 61 is pivotally mounted on the support bracket 20 and can be levered. The lever 61 has two guide rails 611, which are inclined and in opposite directions. The two sliders 62 are disposed in the support bracket 20 and each has a guide groove 621 that engages with the respective guide rails 611. Each slider 62 has a connecting portion (not shown) to connect to one end of the traction member 70. When the lever 61 is levered, the two sliders 62 are guided closer to each other by the two guide rails 611, and are linked to the traction member 70 to drive the force-applying end 51 connected to its other end.

[0096] like Figure 4 As shown, the conversion assembly 30 further includes a reset member 80, which extends along the direction of displacement of the locking member 40, and one end of the reset member 80 abuts against the end of the actuating part 41 away from the engaging part 42, and the other end abuts against the inner sidewall of the rotating seat 21 (e.g., Figures 10 to 13 (As shown). When the drive lever 50 drives the locking member 40 to the unlocked position P4, the actuating part 41 applies pressure to the reset member 80 to generate a reset spring force. When the drive lever 50 stops driving, the locking member 40 can return to the locked position P3 by the reset spring force.

[0097] Continuing from the above, the reset member 80 is a compression spring, and the actuating part 41 has a protrusion 411 at the end away from the engaging part 42. The reset member 80 is fitted onto this protrusion 411, making it difficult for the reset member 80 to slip off the actuating part 41 it abuts against. In addition, the actuating part 41 has a rod 412, which extends on the same side as the engaging part 42. The driving lever 50 has a driving hole 521 at the resistance end 52. The driving lever 50 passes through the rod 412 through this driving hole 521 and can be pivotally connected to the actuating part 41.

[0098] like Figure 4 As shown, the locking member 40 further includes an extension 43 and a blocking portion 44. The extension 43 extends from the end of the engaging portion 42 away from the actuating portion 41, and the extension directions of the extension 43 and the actuating portion 41 are opposite. The blocking portion 44 is formed at the end of the extension 43 away from the engaging portion 42 and is hook-shaped. Figure 7As shown, the side wall 212 of the rotating seat 21 has an opening 213, and the rotating seat 21 has a spring arm 214 extending from the side wall 212 in the opening 213. The spring arm 214 has a protrusion 215 at its end, which protrudes laterally relative to the side wall 212. When the locking member 40 is locked in the locked position P3 and engaged with one of the seat mode positioning part 11 and the sleeping box mode positioning part 12, the opening 213 and the extension 43 are aligned with each other, and the protrusion 215 is pressed, causing the spring arm 214 to move from the opening 213 toward the extension 43, and the spring arm 214 forms a block against the blocking part 44 to prevent the locking member 40 from disengaging from the locked position P3. For example, in the seat mode (such as... Figure 1 As shown, the car seat (not shown) can be fixed to the support bracket 20, and the side wall surface A of the car seat corresponding to the location of the protrusion 215 presses against the protrusion 215 (e.g., Figure 8 As shown, at this time, the spring arm 214 blocks the blocking part 44, and the support bracket 20 is locked in the seat position P2. When the car seat is locked onto the support bracket 20, the blocking part 44 is prevented from disengaging from the locked position P3. Thus, once the car seat is locked, it cannot be adjusted from the seat position P1 to the sleeping box position P2. This prevents the car seat from tipping over due to incorrect usage angle, ensuring the safety of the car seat during use. That is, the car seat can only be locked in the seat position P1.

[0099] like Figure 3 As shown, each fixed seat 10 has a first side surface 13, and each rotating seat 21 has a second side surface 216. When each fixed seat 10 and its corresponding rotating seat 21 are pivotally connected, the first side surface 13 and the second side surface 216 are opposite each other. For example... Figure 3 , 9 As shown, each fixed seat 10 has two convex limiting portions 14 on the first side 13, and each rotating seat 21 has a concave groove 217 on the second side 216 corresponding to each limiting portion. The groove 217 is arc-shaped and has a predetermined arc length. The limiting portion 14 moves within the corresponding groove 217 with the predetermined arc length as its movable stroke, and the stroke limits the angle at which each rotating seat 21 can rotate on the pivoted fixed seat 10. In this embodiment, this angle ranges from 30 to 45 degrees, preferably 42.5 degrees, but the present invention is not limited to this angle.

[0100] In actual operation, if the support bracket 20 is already in seat position P1 on the main frame 200 and in seat mode (e.g.) Figure 1 As shown), to move the support bracket 20 to the sleeping box position P2, the user can operate the operating component 60, which in turn drives the driving lever 50 via the traction component 70, thereby driving the locking component 40 and moving it from the locked position P3 to the unlocked position P4 (as shown). Figure 10 , 11(As shown), disengaging the locking member 40 from the seat mode positioning part 11 allows the support bracket 20 to pivot to the sleeping box position P2 (as shown). Figure 12 (As shown) When the device is in sleeping box mode, releasing the lever on the operating member 60 will cause the locking member 40 to return to the locked position P3 by the reset spring force of the reset member 80 and engage with the sleeping box mode positioning part 12 for locking (as shown). Figure 13 As shown), the support bracket 20 is locked in the sleeping box position P2, and the spring arm 214 can be pressed by the protrusion 215 to move towards the extension 43 to block the blocking part 44 (as shown). Figure 8 As shown), the locking member 40 is prevented from disengaging from the locking position P3. If the support bracket 20 is to be switched from the sleeping box mode to the seat mode, the only difference from the above operation is that after the locking member 40 disengages from the seat mode positioning part 11, the support bracket 20 is moved from the sleeping box position P2 back to the seat position P1. The rest of the operation is the same, so it will not be described again.

[0101] It is not difficult to see from the above description that the features of the present invention are:

[0102] 1. The sitting / lying support conversion mechanism 100 of the bearing device of the present invention is composed of a locking member 40 and a driving lever 50. By driving the lever 50 in a seesaw-like motion, the locking member 40 can be moved between the locked position P3 and the unlocked position P4 with minimal effort. In this simple structure, the conversion and locking of the bearing support 20 between the seat mode and the sleeping box mode can be completed, so as to achieve the effect of simple structure and effortless operation.

[0103] 2. When the support device of the present invention is used in conjunction with the car seat engagement, it restricts the support bracket 20 to engage the car seat only when the car seat is in position P1. When the car seat is engaged, the spring arm 214 can block the blocking part 44, thereby preventing the locking member 40 from disengaging from the locking position P3, so as to avoid the car seat from tipping over due to incorrect use angle and ensure the safety of the car seat in use.

[0104] 3. The convertible support mechanism 100 of the bearing device of the present invention, wherein the conversion component 30 is further provided with an operating member 60 on the bearing support 20, and is connected to the drive lever 50 via a traction member 70, thereby allowing the operating member 60 to be positioned in a location convenient for the user to operate (e.g., ...). Figure 1 , 2 The handrail 201 shown is located on the main frame 200, and the locking element 40 can be moved remotely to achieve the convenience of remote operation.

Claims

1. A convertible support mechanism for a load-bearing device, characterized in that, The supporting device includes a main frame, and the support conversion mechanism includes: Two fixed seats are respectively fixed to both sides of the main frame. At least one of the fixed seats has a seat mode positioning part and a sleeping box mode positioning part. The seat mode positioning part and the sleeping box mode positioning part are separated from the fixed seat by an angle. A support frame has rotating seats on both sides corresponding to each fixed seat. Each rotating seat is rotatably mounted on its corresponding fixed seat. The support frame can pivot between the seat position and the sleeping box position as the rotating seats rotate. The conversion assembly includes a locking element connected to a drive lever and disposed on at least one of the rotating seats; The drive lever is connected to the rotating seat and can swing, and the drive lever is connected to the locking member. The locking member can be displaced by the swing of the drive lever so as to disengage or engage with one of the seat mode positioning part and the sleeping box mode positioning part. When the drive lever is pulled by an external force, it drives the locking member to move away from the corresponding fixed seat, thereby unlocking the support bracket and allowing it to pivot between the seat position and the sleeping box position; and After the external force disappears, the locking element will be driven to move closer to the corresponding fixed seat and engage with one of the seat mode positioning part and the sleeping box mode positioning part, thereby locking the support bracket.

2. The convertible support mechanism for sitting and lying down of the bearing device according to claim 1, characterized in that, The locking member includes an actuating part and an engaging part. The engaging part extends laterally from one end of the actuating part. The seat mode positioning part and the sleeping box mode positioning part are respectively a locking groove. The locking member engages and locks by inserting the engaging part into one of the seat mode positioning part and the sleeping box mode positioning part.

3. The convertible support mechanism for sitting and lying down of the bearing device according to claim 2, characterized in that, The drive lever has a force-applying end and a resistance end that are far apart from each other, and a shaft connection is provided between the force-applying end and the resistance end. The shaft connection is shafted to the provided rotating seat. The conversion assembly includes a traction member connected to the force-applying end and a resistance end pivotally connected to the actuating part. The traction member drives the drive lever to swing along the axis of the shaft connection, and the resistance end pulls the actuating part to drive the locking member to move.

4. The convertible support mechanism for sitting and lying down of the bearing device according to claim 3, characterized in that, The conversion assembly includes a reset member that extends along the direction of displacement of the locking member, with one end abutting against the end of the actuating part away from the engaging part, and the other end abutting against the rotating seat. When the driving lever drives the locking member to be displaced until the support bracket is unlocked, the actuating part applies pressure to the reset member to generate a reset spring force. When the driving lever stops, the locking member is returned to the position where the support bracket is locked by the reset spring force.

5. The convertible support mechanism for sitting and lying down of the bearing device according to claim 4, characterized in that, The reset element is a compression spring, and the end of the actuating part away from the engaging part has a protrusion for the reset element to be fitted.

6. The convertible support mechanism for sitting and lying down of the bearing device according to claim 4, characterized in that, The actuator has a rod that extends on the same side as the engaging part. The drive lever has a drive hole at the resisting end through which the rod passes and is pivotally connected to the actuator.

7. The convertible support mechanism for sitting and lying down of the bearing device according to claim 3, characterized in that, The shaft connection is a shaft hole, and the rotating seat on which the drive lever is provided has a pivot. The pivot is provided corresponding to the shaft connection, and the drive lever is connected to the rotating seat by passing through the pivot through the shaft connection.

8. The convertible support mechanism for sitting and lying down of the bearing device according to claim 3, characterized in that, The conversion assembly includes a leverable operating member disposed on the support bracket. The traction member is a cable connected at one end to the force-applying end and at the other end to the operating member. By levering the operating member, the force-applying end is driven via the traction member, and the actuating part is activated via the resistance end to displace the locking member.

9. The convertible support mechanism for sitting and lying down of the bearing device according to claim 8, characterized in that, The operating component includes a lever and two sliders. The lever is pivotally mounted on the support bracket and has two guide rails that are inclined and in opposite directions. The two sliders are disposed in the support bracket. Each slider has a guide groove that connects to the respective guide rail and has a connecting portion that connects to one end of the traction member. When the lever is actuated, the two sliders are guided by the two guide rails to move closer to each other, thereby actuating the traction member and driving the force-applying end.

10. The convertible support mechanism for sitting and lying down of the bearing device according to claim 2, characterized in that, The locking member further includes an extension and a blocking portion. The extension extends from the end of the engaging portion away from the actuating portion, and the extension and the actuating portion extend in opposite directions. The blocking portion is formed at the end of the extension away from the engaging portion and is hook-shaped. The side wall of the rotating seat has an opening, and the rotating seat has a spring arm extending from the side wall in the opening. The spring arm has a protrusion at its end that protrudes laterally from the side wall. When the locking member engages with one of the seat mode positioning portion and the sleeping box mode positioning portion, the opening and the extension are aligned with each other, and the protrusion is pressed to make the spring arm move from the opening toward the extension, and the spring arm blocks the blocking portion to prevent the locking member from disengaging from the support bracket.

11. The convertible support mechanism for sitting and lying down of the bearing device according to claim 1, characterized in that, Each fixed seat has a first side surface, and each rotating seat has a second side surface. When each fixed seat and its corresponding rotating seat are pivotally mounted, the first side surface and the second side surface are opposite each other. One of the first side surface and the second side surface has a convex limiting portion, and the other has a concave groove corresponding to the limiting portion. The groove is arc-shaped and has a predetermined arc length. The limiting portion moves within the groove with the predetermined arc length as its movable stroke, and the stroke limits the angle at which each rotating seat can rotate on the pivoted fixed seat.

12. The convertible support mechanism for sitting and lying down of the bearing device according to claim 11, characterized in that, The angle is between 30 and 45 degrees.

13. The convertible support mechanism for sitting and lying down of the bearing device according to claim 1, characterized in that, The support structure is equipped with a canopy frame.

14. The convertible support mechanism for sitting and lying down of the bearing device according to claim 1, characterized in that, The supporting bracket has accessories attached to the rotating seats on both sides when the seat is in the position.

15. The convertible support mechanism for sitting and lying down of the bearing device according to claim 14, characterized in that, The accessory is a plate or a handrail.

16. A type of seat, characterized in that, Includes a support frame, two mounting bases, and a conversion assembly, wherein: At least one of the fixed seats has a seat mode positioning part and a sleeping box mode positioning part, which are spaced apart from each other by an angle from the fixed seat. The support bracket has rotating seats on both sides corresponding to each fixed seat. Each rotating seat is rotatably mounted on the corresponding fixed seat. The support bracket can pivot between the seat position and the sleeping box position as the rotating seat rotates. The conversion assembly includes a locking element that is connected to a drive lever and disposed on at least one of the rotating seats; The drive lever is connected to the rotating seat and can swing, and the drive lever is connected to the locking member. The locking member can be displaced by the swing of the drive lever so as to disengage or engage with one of the seat mode positioning part and the sleeping box mode positioning part. When the drive lever is pulled by an external force, it drives the locking member to move away from the corresponding fixed seat, thereby unlocking the support bracket and allowing it to pivot between the seat position and the sleeping box position; and After the external force disappears, the locking element will be driven to move closer to the corresponding fixed seat and engage with one of the seat mode positioning part and the sleeping box mode positioning part, thereby locking the support bracket.

17. A supporting device, characterized in that: The seat as described in claim 16 is installed.

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