Wheelchair scooter seat structure

Abstract

The utility model discloses a wheelchair scooter seat structure, which belongs to the technical field of wheelchair scooter structures, and comprises a chassis and a backrest component, a support frame is fixedly connected onto the chassis, a cushion support is rotatably connected onto the backrest component, the cushion support is detachably connected with the support frame, and the backrest component is rotatably connected with the cushion support. The backrest assembly is rotationally connected to the base plate, and the supporting frame and the backrest assembly in the unfolded state are arranged at an included angle. The seat cushion support and the supporting frame are of two independent structures and can be disassembled and assembled, the seat cushion support can rotate relative to the backrest assembly so that the seat cushion support can be folded on the backrest assembly, the backrest assembly can rotate relative to the base plate, the seat cushion support and the backrest assembly can be folded on the base plate, and the folding effect is achieved. On one hand, the complexity of the supporting frame is simplified, on the other hand, folding simplicity is improved, meanwhile, a stable triangular structure can be formed during assembling, and the practical effect of the wheelchair scooter is greatly improved.

Description

Technical Field

[0001] The utility model relates to a wheelchair-replacing-walking vehicle structure, more specifically, it relates to a wheelchair-replacing-walking vehicle seat structure. Background Art

[0002] A wheelchair scooter is a means of transportation and auxiliary tool for the purpose of walking, usually for people with limited mobility; existing wheelchair scooters generally have a folding function for easy storage; therefore, it is essential to design a folding mechanism on the wheelchair scooter, but the current folding mechanism has a complex structure and many rods, which greatly increases the complexity of the wheelchair scooter and is prone to failure. In addition, the existing folding mechanism is also somewhat unstable for the wheelchair scooter, which greatly reduces the user experience.

[0003] For example: Chinese patent announcement number CN217320636U, announcement date August 30, 2022, the name of the utility model is a foldable scooter, the application discloses a scooter, including a chassis frame, a seat, a backrest, a folding bracket and a telescopic drive unit, the folding bracket includes a first bracket and a second bracket that are rotatably connected and are a parallelogram linkage mechanism, the first bracket and the second bracket are connected by a first linkage, the backrest is hinged on the seat, and is linked to the folding bracket through a second linkage; the scooter of this scheme can be folded, and during the lifting process, the seat is lifted and lowered relative to the chassis frame, and does not move forward and backward, and the structure is compact. However, the folding mechanism of this scheme is complex, uses more connecting rods, and has relatively poor stability. Utility Model Content

[0004] The utility model overcomes the problems of complex folding mechanism and poor stability of existing wheelchair scooters, and provides a wheelchair scooter seat structure. This scheme improves the wheelchair scooter seat, simplifies the folding mechanism of the wheelchair scooter, and has higher stability.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a seat structure of a wheelchair scooter, including a chassis and a backrest assembly, a support frame is fixedly connected to the chassis, a seat cushion support is rotatably connected to the backrest assembly, the seat cushion support is detachably connected to the support frame, the backrest assembly is rotatably connected to the chassis, and the support frame is arranged at an angle with the backrest assembly in the unfolded state. In this solution, the support frame is used to support the seat cushion support structure, the seat cushion support is a seat structure, the seat cushion support and the support frame are two independent structures that can be disassembled and assembled, the seat cushion support can be rotated relative to the backrest assembly, so that the seat cushion support is folded on the backrest assembly, and the backrest assembly can be rotated relative to the chassis, so that the seat cushion support and the backrest assembly are folded on the chassis to achieve a folding effect. Among them, when the backrest assembly is unfolded, the support frame and the backrest assembly form an angle structure, and then the seat cushion support and the support frame are assembled to form a stable triangular structure. This solution designs the seat cushion support and the support frame into two structures, which simplifies the complexity of the support frame on the one hand, and improves the ease of folding on the other hand. At the same time, it can also form a stable triangular structure during assembly, greatly improving the practical effect of the wheelchair scooter.

[0006] Preferably, the backrest assembly includes a connecting frame, one end of which is rotatably connected to the chassis, and the other end of which is rotatably connected to the seat cushion support. The connecting frame is a rotating part of the backrest assembly. On the one hand, the connecting frame is rotatably connected to the seat cushion support, so that the seat cushion can be rotatably folded onto the backrest assembly. On the other hand, the connecting frame is rotatably connected to the chassis, so that the seat cushion and the backrest are both folded onto the chassis, achieving a good folding effect.

[0007] Preferably, the backrest assembly further comprises a backrest, which is fixedly connected to the connecting frame. The backrest is used for the user to lean on, and the backrest and the connecting frame are fixed together and cannot rotate, thereby improving the stability of the backrest and the user's experience.

[0008] Preferably, a buffer assembly is provided between the support frame and the seat support, and the buffer assembly includes the buffer pad and a positioning member. The buffer assembly can improve the stability of the user when sitting on the wheelchair scooter and improve the user experience.

[0009] Preferably, the buffer gasket is fixedly connected to the support frame, and the positioning member is fixedly connected to the seat cushion support; or the buffer gasket is fixedly connected to the seat cushion support, and the positioning member is fixedly connected to the support frame. The buffer gasket is made of rubber and has good buffering properties. The positioning member can improve the positioning effect of the seat cushion support on the support frame and realize rapid assembly. The buffer gasket can be set on any one of the support frame and the seat cushion support, and the positioning member is set on the other structure, both of which can realize the coordination between the support frame and the seat cushion support bracket.

[0010] Preferably, the support frame is in an inverted V-shaped structure. The support frame is an integrated V-shaped structure, which simplifies the complexity of the support frame structure and reduces the difficulty of production and manufacturing. At the same time, the V-shaped structure ensures structural strength and higher stability.

[0011] Preferably, one end of the positioning member is fixedly connected to the seat support, and the other end of the positioning member is provided with a spherical block; the buffer gasket is provided with a through hole, and the support frame is provided with a spherical groove for accommodating the spherical block. The positioning member and the seat support are fixed together, so that the seat support can be quickly positioned on the support frame, and the spherical block on the positioning member can also improve the positioning effect and achieve rapid positioning; the through hole on the buffer gasket is used for the spherical block to pass through, and the spherical groove on the support frame is used to accommodate the spherical block and effectively position it.

[0012] Preferably, one end of the positioning member is fixedly connected to the support frame, and the other end of the positioning member is provided with a spherical block; the buffer gasket is provided with a through hole, and the bottom of the seat cushion support is provided with a spherical groove for accommodating the spherical block. The positioning member and the support frame are fixed together, so that the seat cushion support can be quickly positioned on the support frame, and the spherical block on the positioning member can also improve the positioning effect and achieve rapid positioning; the through hole on the buffer gasket is used for the spherical block to pass through, and the spherical groove on the bottom of the seat cushion support is used to accommodate the spherical block and effectively position it.

[0013] Preferably, the support frame and the buffer gasket are fixed by a snap connection. The support frame and the buffer gasket are fixed by snap connection. Specifically, a snap slot is provided on the support frame and a snap strip is provided on the buffer gasket, or a snap strip is provided on the support frame and a snap slot is provided on the buffer gasket; both can achieve the effect of snap connection and fixation, which is convenient for maintenance and replacement of the structure, and the fixing method is stable and simple.

[0014] Preferably, the chassis is further provided with a driving member connected to the connecting frame, and the driving member can drive the connecting frame to perform telescopic movement, thereby controlling the folding of the wheelchair scooter.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) the seat cushion support and the support frame are designed as a split body, which reduces the manufacturing and processing difficulty of the support frame and the seat cushion support, and also simplifies the folding structure of the wheelchair vehicle, making the structure simpler; (2) the support frame and the seat cushion support are designed as a split body, which improves the folding effect of the wheelchair vehicle; (3) the support frame, the backrest assembly and the seat cushion support can form a stable triangular structure, which improves the stability of the wheelchair vehicle; (4) a buffer assembly is arranged between the support frame and the seat cushion support, which improves the comfort of the wheelchair vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1The utility model is an overall schematic diagram of a wheelchair-assisted scooter.

[0017] Figure 2 It is a schematic diagram of the connection between the seat cushion support and the support frame of the utility model.

[0018] Figure 3 This is an exploded view of the seat cushion support and support frame of the utility model.

[0019] Figure 4 This is a cross-sectional view of the seat cushion support and the support frame of the utility model.

[0020] Figure 5 This is a schematic diagram of the cooperation between the support frame and the positioning member of the utility model.

[0021] Figure 6 It is a schematic diagram of the upper viewing angle of the buffer gasket of the utility model.

[0022] Figure 7 This is a schematic diagram of the bottom perspective of the buffer gasket of the utility model.

[0023] Figure 8 This is a schematic diagram of the bottom perspective of the seat cushion support of the utility model.

[0024] Fig. 9 The utility model is a schematic diagram of a wheelchair-assisted scooter in a folded state.

[0025] In the figure: 1. chassis, 2. backrest assembly, 2.1. connecting frame, 2.2. backrest, 3. support frame, 3.1. spherical groove, 3.2. frame body, 3.3. mounting hole, 3.4. receiving groove, 4. seat cushion support, 4.1. seat plate, 4.2. connecting seat, 5. buffer assembly, 5.1. buffer gasket, 5.1.1. through hole, 5.2. positioning member, 5.2.1. spherical block, 6. driving member, 7.1. clamping strip, 7.2. clamping groove, 8. mounting plate. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0027] Example 1: Figure 1 A wheelchair-assisted scooter seat structure shown includes a chassis 1 of the wheelchair-assisted scooter, a support frame 3 is arranged at the rear axle position of the chassis 1, the support frame 3 is fixedly connected to the chassis 1, a backrest assembly 2 is also arranged at the rear axle position of the chassis 1, the backrest assembly 2 and the chassis 1 are in a rotational connection relationship, a seat cushion support 4 structure is rotatably connected at the middle position of the backrest assembly 2, the seat cushion support 4 includes a seat plate 4.1 with a larger area and a connecting seat 4.2 with a smaller area, the seat plate 4.1 and the connecting seat 4.2 are integrally formed, a soft seat cushion is laid on the seat plate 4.1, and the connecting seat 4.2 can be cooperatively connected to the top of the support frame 3.

[0028] As Figure 2 or Figure 5 shown, the support frame 3 is an inverted V-shaped structure, and the two frames of the support frame 3 are curved in a certain arc. Three mounting holes 3.3 are provided at the lower ends of the two frames 3.2 of the support frame 3. Corresponding to the structure of the chassis 1, the chassis 1 can be fixedly connected to the two frames 3.2 of the support frame 3, and the support frame 3 is fixedly arranged on the chassis 1 in an inverted V shape; in this solution, the frame 3.2 of the support frame 3 is designed into a certain arc shape, which can improve the structural strength and stability of the support frame 3; and the top of the support frame 3 can be cooperatively connected with the connecting seat 4.2 of the seat cushion support 4.

[0029] As Figures 2 to 4 shown, the bottom of the seat cushion support 4 and the top of the support frame 3 can be connected, and the connection between the two is detachable. When the wheelchair scooter needs to be folded, the support frame 3 and the seat cushion support 4 can be disassembled. When the wheelchair scooter needs to be used, the support frame 3 and the seat cushion support 4 can be assembled. In this solution, the seat cushion support 4 directly acts on the support frame 3 when unfolded (in the working state), without redundant components, and the structure is simple. Compared with the traditional folding mechanism, it avoids the failure caused by too large intermediate components and brings harm to the passengers.

[0030] A buffer assembly 5 is also provided between the seat cushion support 4 and the support frame 3. The buffer assembly 5 includes a buffer gasket 5.1 and a positioning member 5.2. The top of the support frame 3 has a rectangular cross-section, and a receiving groove 3.4 for receiving the buffer gasket 5.1 is provided at the top of the support frame 3. Both the receiving groove 3.4 and the buffer gasket 5.1 are rectangular structures, and the buffer gasket 5.1 is embedded in the receiving groove 3.4 on the support frame 3. Specifically, the buffer gasket 5.1 is fixed to the support frame 3 by a snap connection. As Figure 5 and Figure 7 shown, in this embodiment, a plurality of card strips 7.1 are provided in the receiving groove 3.4, and a plurality of card slots 7.2 are provided at the bottom of the buffer gasket 5.1. The card strips 7.1 and the card slots 7.2 are arranged in a "king" shape, so that the cooperation strength between the card slots 7.2 and the card strips 7.1 is higher, and the buffer gasket 5.1 is not easily disengaged from the receiving groove 3.4.

[0031] The positioning member 5.2 is generally in the shape of a rod with a spherical block 5.2.1. As Figures 3 to 5As shown, one end of the positioning member 5.2 is fixedly connected to the bottom of the seat cushion support 4. Specifically, a metal mounting plate 8 is arranged between the positioning member 5.2 and the seat cushion support 4. The metal mounting plate 8 is provided with various positioning holes and a fixing hole for the positioning member 5.2 to pass through. The rod body of the positioning member 5.2 passes through and is fixed to the fixing hole. Then, the mounting plate 8 is fixed to the bottom of the seat cushion support 4 by screws or other fasteners, thereby completing the fixing of the positioning member 5.2 to the bottom of the seat cushion support 4. Figure 8 As shown, the bottom of the seat support 4 is also provided with a rectangular groove structure, in which a hole for accommodating the rod of the positioning member 5.2 and four threaded holes are provided. The other end of the positioning member is an integrally formed spherical block 5.2.1, the radial dimension of which is larger than the diameter of the rod of the positioning member 5.2. At the same time, since the positioning member 5.2 needs to be connected with the support frame 3 to realize the rapid positioning and assembly of the seat support 4 on the support frame 3, a structure matching the spherical block 5.2.1 is provided on the support frame 3 and the buffer gasket 5.1. Specifically, as shown in FIG. Figures 5 to 7 As shown, a through hole 5.1.1 structure is provided in the middle position of the buffer gasket 5.1, and the radial dimension of the through hole 5.1.1 structure is larger than the radial dimension of the spherical block 5.2.1, so that the spherical block 5.2.1 can pass through the through hole 5.1.1, and a spherical groove 3.1 is provided in the accommodating groove 3.4, and the positions of the spherical groove 3.1 and the through hole 5.1.1 correspond, and the spherical groove 3.1 can accommodate the spherical block 5.2.1.

[0032] On the upper side of the buffer gasket 5.1, that is, on the side of the buffer gasket 5.1 away from the support frame 3, the edge of the through hole 5.1.1 is provided with a hole expansion structure, so as to play a certain guiding role for the spherical block 5.2.1, so that the spherical block 5.2.1 can more easily pass through the buffer gasket 5.1 and cooperate with the spherical groove 3.1. The buffer gasket 5.1 is made of rubber material. When the user sits on the seat, the buffer gasket 5.1 can play a good buffering effect and improve the user experience. It should be noted that in this solution, the buffer gasket 5.1 is fixed to the support frame 3, and the positioning member 5.2 is fixed to the seat cushion support 4. In actual production, the buffer gasket 5.1 can be set on any one of the structures of the support frame 3 and the seat cushion support 4, and the positioning member 5.2 is set on the other structure, both of which can realize the cooperation between the support frame 3 and the seat cushion support 4 bracket. This will not be repeated.

[0033] like Figure 1As shown, the backrest assembly 2 includes a connecting frame 2.1 and a backrest 2.2. In this solution, the connecting frame 2.1 is a set of double connecting rods arranged in parallel. The bottom of the connecting frame 2.1 is rotatably connected to the position where the rear axle of the chassis 1 is located, and the top of the connecting frame 2.1 is fixed to the backrest 2.2, so that the plane of the backrest 2.2 is coplanar with the plane of the connecting frame 2.1. In addition, the rear side of the seat cushion support 4 is also rotatably connected to the top of the connecting frame 2.1. Specifically, a shorter curved connecting rod is respectively arranged on both sides of the rear of the seat cushion support 4, one end of the connecting rod is fixedly connected to the seat cushion support 4, and the other end of the connecting rod is rotatably connected to the connecting frame 2.1. The curved connecting rod design can realize the folding of the seat cushion support 4, and it can be close to the backrest 2.2 after folding.

[0034] In addition, the above-mentioned connecting frame 2.1, in addition to adopting a double-link structure, can also adopt a connecting plate structure. However, it should be noted that an avoidance hole needs to be set on the connecting plate to avoid the support frame 3. The reason is that the support frame 3 and the seat cushion support 4 are detachably connected. When the backrest assembly 2 is folded, the backrest assembly 2 needs to be rotated to a position close to the chassis 1, and the support frame 3 is fixed on the chassis 1. If the avoidance hole is not set on the connecting frame 2.1, the support frame 3 will hinder the folding of the backrest assembly 2; while the connecting frame 2.1 with a double-link structure has a vacant state between the double links, which is equivalent to a large avoidance structure and can better avoid the support frame 3.

[0035] like Figure 1 and 9 As shown, when the wheelchair scooter needs to be folded, the seat cushion support 4 is first rotated upward so that the seat cushion is close to the backrest assembly 2. At this time, the seat cushion support 4 and the support frame 3 are separated, and then the backrest assembly 2 and the seat cushion support 4 are rotated toward the chassis 1 until they are close to the chassis 1, and the folding operation of the wheelchair scooter can be completed.

[0036] When the wheelchair scooter needs to be unfolded, the backrest assembly 2 is first rotated upward, and then the seat cushion support 4 in the folded state is rotated downward to a horizontal state. The positioning piece 5.2 on the bottom of the seat cushion support 4 can be just matched and connected with the buffer gasket 5.1 and the spherical groove 3.1 on the support frame 3, thereby completing the unfolding operation of the wheelchair scooter.

[0037] When the wheelchair scooter is fully unfolded, the support frame 3 and the backrest assembly 2 form an angle (acute angle), and together with the horizontal seat cushion support 4, form a stable triangular structure, thereby improving the stability of the wheelchair scooter seat.

[0038] Example 2: Figure 1The seat structure of a wheelchair scooter shown in the figure includes a chassis 1 of the wheelchair scooter, a support frame 3 is arranged at the rear axle position of the chassis 1, the support frame 3 is fixedly connected to the chassis 1, a backrest assembly 2 is also arranged at the rear axle position of the chassis 1, the backrest assembly 2 and the chassis 1 are in a rotational connection relationship, a seat cushion support 4 structure is rotationally connected at the middle position of the backrest assembly 2, the seat cushion support 4 includes a seat plate 4.1 with a larger area and a connecting seat 4.2 with a smaller area, the seat plate 4.1 and the connecting seat 4.2 are integrally formed, a soft seat cushion is laid on the seat plate 4.1, and the connecting seat 4.2 can be matched and connected with the top of the support frame 3. A driving member 6 is arranged on the chassis 1, and the driving member 6 is connected to the backrest assembly 2. Specifically, the driving member 6 is a telescopic cylinder, and the telescopic end of the telescopic cylinder is connected to the bottom of the backrest assembly 2.

[0039] like Figure 2 or Figure 5 As shown, the support frame 3 is an inverted V-shaped structure, and the two frames of the support frame 3 are bent in a certain arc shape. Three mounting holes 3.3 are arranged at the lower ends of the two frames 3.2 of the support frame 3, and corresponding to the structure of the chassis 1, the chassis 1 can be fixedly connected with the two frames 3.2 of the support frame 3, and the support frame 3 is fixed on the chassis 1 in an inverted V shape; the present solution designs the frame 3.2 of the support frame 3 into a certain arc shape, which can improve the structural strength of the support frame 3 and the stability of the support frame 3; and the top of the support frame 3 can be matched and connected with the connecting seat 4.2 of the seat cushion support 4.

[0040] like Figures 2 to 4 As shown, the bottom of the seat cushion support 4 and the top of the support frame 3 can be connected, and the two are detachably connected. When the wheelchair needs to be folded, the support frame 3 and the seat cushion support 4 can be disassembled, and when the wheelchair needs to be used, the support frame 3 and the seat cushion support 4 can be assembled. In this solution, the seat cushion support 4 directly acts on the support frame 3 when unfolded (working state), without redundant components, and has a simple structure. Compared with the traditional folding mechanism, it avoids failure caused by too large intermediate components and causes harm to the occupant.

[0041] A buffer assembly 5 is also provided between the seat cushion support 4 and the support frame 3. The buffer assembly 5 includes a buffer pad 5.1 and a positioning member 5.2. The top of the support frame 3 is a rectangular cross section. A receiving groove 3.4 for receiving the buffer pad 5.1 is provided on the top of the support frame 3. Both the receiving groove 3.4 and the buffer pad 5.1 are rectangular structures. The buffer pad 5.1 is embedded in the receiving groove 3.4 on the support frame 3. Specifically, the buffer pad 5.1 is fixed to the support frame 3 by a snap-fit ​​method, such as Figure 5 and Figure 7As shown, in this embodiment, a number of strip structures 7.1 are provided in the receiving groove 3.4, and a number of groove structures 7.2 are provided at the bottom of the buffer gasket 5.1. The strip 7.1 and the groove 7.2 are arranged in a "king" shape, so that the matching strength between the groove 7.2 and the strip 7.1 is higher, and the buffer gasket 5.1 is not easily disengaged from the receiving groove 3.4.

[0042] The positioning member 5.2 is integrally in the shape of a rod with a spherical block 5.2.1, as Figures 3 to 5 shown. One end of the positioning member 5.2 is fixedly connected to the bottom of the seat cushion support 4. Specifically, a metal mounting plate 8 is provided between the positioning member 5.2 and the seat cushion support 4. Various positioning holes and a fixing hole for the positioning member 5.2 to pass through are provided on the metal mounting plate 8. The rod body of the positioning member 5.2 passes through and is fixed in the fixing hole, and then the mounting plate 8 is fixed to the bottom of the seat cushion support 4 by screws or other fasteners, thereby completing the fixing of the positioning member 5.2 at the bottom of the seat cushion support 4, as Figure 8 shown. A rectangular groove structure is also provided at the bottom of the seat cushion support 4. A hole for receiving the rod body of the positioning member 5.2 and four threaded holes are provided in the rectangular groove. The other end of the positioning member is an integrally formed spherical block 5.2.1, and the radial dimension of the spherical block 5.2.1 is larger than the diameter of the rod body of the positioning member 5.2. At the same time, since the positioning member 5.2 needs to be cooperatively connected with the support frame 3 to realize the quick positioning and assembly of the seat cushion support 4 on the support frame 3, a structure for cooperating with the spherical block 5.2.1 is provided on the support frame 3 and the buffer gasket 5.1. Specifically, as Figures 5 to 7 shown, a through hole 5.1.1 structure is provided at the middle position of the buffer gasket 5.1. The radial dimension of the through hole 5.1.1 structure is larger than the radial dimension of the spherical block 5.2.1, so that the spherical block 5.2.1 can pass through the through hole 5.1.1. A spherical groove 3.1 is provided in the receiving groove 3.4. The spherical groove 3.1 corresponds to the position of the through hole 5.1.1, and the spherical groove 3.1 can receive the spherical block 5.2.1.

[0043] On the upper side of the buffer gasket 5.1, that is, on the side of the buffer gasket 5.1 away from the support frame 3, the edge of the through hole 5.1.1 is provided with a hole expansion structure, so as to play a certain guiding role for the spherical block 5.2.1, so that the spherical block 5.2.1 can more easily pass through the buffer gasket 5.1 and cooperate with the spherical groove 3.1. The buffer gasket 5.1 is made of rubber material. When the user sits on the seat, the buffer gasket 5.1 can play a good buffering effect and improve the user experience. It should be noted that in this solution, the buffer gasket 5.1 is fixed to the support frame 3, and the positioning member 5.2 is fixed to the seat cushion support 4. In actual production, the buffer gasket 5.1 can be set on any one of the structures of the support frame 3 and the seat cushion support 4, and the positioning member 5.2 is set on the other structure, both of which can realize the cooperation between the support frame 3 and the seat cushion support 4 bracket. This will not be repeated.

[0044] like Figure 1 As shown, the backrest assembly 2 includes a connecting frame 2.1 and a backrest 2.2. In this solution, the connecting frame 2.1 is a set of double connecting rods arranged in parallel. The bottom of the connecting frame 2.1 is rotatably connected to the position where the rear axle of the chassis 1 is located, and the top of the connecting frame 2.1 is fixed to the backrest 2.2, so that the plane of the backrest 2.2 is coplanar with the plane of the connecting frame 2.1. In addition, the rear side of the seat cushion support 4 is also rotatably connected to the top of the connecting frame 2.1. Specifically, a shorter curved connecting rod is respectively arranged on both sides of the rear of the seat cushion support 4, one end of the connecting rod is fixedly connected to the seat cushion support 4, and the other end of the connecting rod is rotatably connected to the connecting frame 2.1. The curved connecting rod design can realize the folding of the seat cushion support 4, and it can be close to the backrest 2.2 after folding.

[0045] In addition, the above-mentioned connecting frame 2.1, in addition to adopting a double-link structure, can also adopt a connecting plate structure. However, it should be noted that an avoidance hole needs to be set on the connecting plate to avoid the support frame 3. The reason is that the support frame 3 and the seat cushion support 4 are detachably connected. When the backrest assembly 2 is folded, the backrest assembly 2 needs to be rotated to a position close to the chassis 1, and the support frame 3 is fixed on the chassis 1. If the avoidance hole is not set on the connecting frame 2.1, the support frame 3 will hinder the folding of the backrest assembly 2; while the connecting frame 2.1 with a double-link structure has a vacant state between the double links, which is equivalent to a large avoidance structure and can better avoid the support frame 3.

[0046] A driving member 6 is provided on the chassis 1, and the driving member 6 is connected to the bottom of the connecting frame 2.1. Specifically, the driving member 6 is a telescopic cylinder, and the telescopic end of the telescopic cylinder is fixedly connected to the bottom of the connecting frame; and the telescopic end of the driving member 6 can drive the connecting frame 2.1 (parallel double connecting rods) to move synchronously. The driving member 6 is just located in the inverted V-shaped structure of the support frame 3, so the inverted V-shaped design of the support frame 3 also provides movement space for the driving member 6.

[0047] like Figure 1 and Fig. 9 As shown, when the wheelchair scooter needs to be folded, the seat cushion support 4 is first rotated upward so that the seat cushion is close to the backrest assembly 2. At this time, the seat cushion support 4 and the support frame 3 are separated, and then the backrest assembly 2 and the seat cushion support 4 are rotated toward the chassis 1 until they are close to the chassis 1. The folding operation of the wheelchair scooter can be completed, so that this solution can easily achieve folding.

[0048] When the wheelchair scooter needs to be unfolded, the backrest assembly 2 is first rotated upward, and then the seat cushion support 4 in the folded state is rotated downward to a horizontal state. The positioning piece 5.2 on the bottom of the seat cushion support 4 can be just matched and connected with the buffer gasket 5.1 and the spherical groove 3.1 on the support frame 3, thereby completing the unfolding operation of the wheelchair scooter.

[0049] When the wheelchair scooter is fully unfolded, the support frame 3 and the backrest assembly 2 form an angle (acute angle), and together with the horizontal seat cushion support 4, form a stable triangular structure, thereby improving the stability of the wheelchair scooter seat.

Claims

1. A wheelchair-assisted vehicle seat structure, characterized in that: It includes a chassis and a backrest assembly, wherein a support frame is fixedly connected to the chassis, a seat cushion support is rotatably connected to the backrest assembly, the seat cushion support is detachably connected to the support frame, the backrest assembly is rotatably connected to the chassis, and the support frame is arranged at an angle to the backrest assembly in an unfolded state.

2. A wheelchair-assisted scooter seat structure according to claim 1, characterized in that: The backrest assembly comprises a connecting frame, one end of which is rotatably connected to the chassis, and the other end of which is rotatably connected to the seat cushion support.

3. A wheelchair-assisted scooter seat structure according to claim 2, characterized in that: The backrest assembly also includes a backrest, and the backrest is fixedly connected to the connecting frame.

4. A wheelchair-assisted scooter seat structure according to any one of claims 1 to 3, characterized in that: A buffer component is provided between the support frame and the seat cushion support, and the buffer component comprises a buffer gasket and a positioning member.

5. The seat structure of a wheelchair-assisted scooter according to claim 4, characterized in that: The buffer gasket is fixedly connected to the support frame, and the positioning member is fixedly connected to the seat cushion support; Or the buffer gasket is fixedly connected to the seat cushion support, and the positioning member is fixedly connected to the support frame.

6. The seat structure of a wheelchair-assisted scooter according to claim 5, characterized in that: The support frame is in an inverted V-shaped structure.

7. The seat structure of a wheelchair-assisted scooter according to claim 5, characterized in that: One end of the positioning member is fixedly connected to the seat cushion support, and the other end of the positioning member is provided with a spherical block; a through hole is provided on the buffer gasket, and a spherical groove for accommodating the spherical block is provided on the support frame.

8. The seat structure of a wheelchair-assisted scooter according to claim 5, characterized in that: One end of the positioning member is fixedly connected to the support frame, and the other end of the positioning member is provided with a spherical block; a through hole is provided on the buffer gasket, and a spherical groove for accommodating the spherical block is provided at the bottom of the seat cushion support.

9. A wheelchair-assisted scooter seat structure according to claim 7 or 8, characterized in that: The support frame and the buffer gasket are fixed by clamping.

10. A wheelchair-assisted scooter seat structure according to claim 2 or 3, characterized in that: The chassis is also provided with a driving member, and the driving member is connected to the connecting frame.

Images