Foot support assembly, seat and vehicle

Abstract

The utility model provides a foot support assembly, a seat and a vehicle. The foot support assembly comprises a mounting shaft, a foot support rotationally arranged on the mounting shaft, a lead screw motor arranged on the foot support and a transmission part arranged between a lead screw of the lead screw motor and the mounting shaft. The mounting shaft is used for mounting the foot support assembly on an external carrier, the transmission part is in threaded connection with the lead screw, a spiral structure is arranged between the transmission part and the mounting shaft, and the transmission part is driven by the lead screw motor to move in the axial direction of the lead screw and drives the foot support to rotate relative to the mounting shaft under transmission of the spiral structure. According to the foot support assembly, the foot support assembly is installed on the external carrier through the installation shaft, the foot support assembly has the advantages of being easy and convenient to assemble and install, and due to the fact that the spiral structure is arranged between the transmission piece and the installation shaft, when the transmission piece is driven by the lead screw motor to move in the axial direction of the lead screw, under transmission of the spiral structure, the foot support assembly can stably rotate. The foot support can be pulled to rotate relative to the installation shaft, and therefore the overturning angle of the foot support assembly can be adjusted easily.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a footrest assembly; at the same time, the utility model also relates to a seat provided with the footrest assembly, and a vehicle provided with the seat. Background Art

[0002] In order to enrich the riding modes of the second row / rear row of the vehicle and improve the riding comfort of the seats, electric footrests have been installed on the seat backs to support the feet of the second row / rear row passengers. They can also be used in conjunction with the second row / rear row seat leg rests to improve riding comfort.

[0003] The existing footrest has a complex structure and requires a large layout space. In addition, in order to meet the comfort of the front passengers, the entire footrest needs to be moved backward, which makes the backrest thicker and less refined, and cannot meet the layout of small vehicles. In addition, the existing footrest structure is fixed on both sides of the backrest frame. Affected by the backrest angle adjustment motor, the fixed structure on one side of the footrest needs to avoid the motor, which has large space limitations and complex assembly. At the same time, the footrest has low strength and rigidity, resulting in poor performance of the footrest. Utility Model Content

[0004] In view of this, the utility model aims to provide a footrest assembly to facilitate installation on an external carrier.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A footrest assembly comprises a mounting shaft, a footrest rotatably mounted on the mounting shaft, a lead screw motor mounted on the footrest, and a transmission member mounted between a lead screw of the lead screw motor and the mounting shaft;

[0007] The mounting shaft is used to mount the foot rest assembly on an external carrier, the transmission member is threadedly connected to the lead screw, and a spiral structure is provided between the transmission member and the mounting shaft, the transmission member is driven by the lead screw motor to move along the axial direction of the lead screw, and under the transmission of the spiral structure, the foot rest is pulled to rotate relative to the mounting shaft.

[0008] Furthermore, the spiral structure includes a spiral protrusion arranged on the outer wall of the mounting shaft, and a transmission hole arranged on the transmission member, and a spiral groove matching the spiral protrusion is arranged on the inner wall of the transmission hole.

[0009] Furthermore, the transmission member includes a screw sleeve, a sleeve, and a connecting plate that detachably connects the screw sleeve and the sleeve together; the screw sleeve is threadedly connected to the lead screw, and the spiral structure is arranged between the sleeve and the mounting shaft.

[0010] Furthermore, the installation shaft includes a middle shaft body and end shaft bodies detachably arranged at both ends of the middle shaft body; the spiral protrusion is arranged on the middle shaft body, and the end shaft bodies at both ends are used to be connected to the external carrier.

[0011] Furthermore, at least one of the end shaft bodies has a rectangular cross-section, and a bushing is sleeved on the end shaft body; the bushing has a columnar portion, and a convex ring arranged on one side of the columnar portion, the foot rest is rotatably arranged on the columnar portion, and the convex ring is used to limit the axial displacement of the foot rest along the mounting axis.

[0012] Furthermore, a limit plate is provided on the footrest, and the lead screw is inserted in the limit plate and can rotate relative to the limit plate; the limit plate is used to limit the displacement of the transmission member along the axial direction of the lead screw.

[0013] Furthermore, a torsion spring is sleeved on the installation shaft, one end of the torsion spring is connected to the installation shaft, and the other end is connected to the foot rest.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The footrest assembly described in the utility model is installed on an external carrier by means of a mounting shaft, and has the advantages of simple assembly and low cost; and by arranging a spiral structure between the transmission member and the mounting shaft, when the transmission member is driven by the screw motor to move along the axial direction of the screw, the footrest can be pulled to rotate relative to the mounting shaft under the transmission of the spiral structure, thereby facilitating the adjustment of the flipping angle of the footrest assembly, and making the arrangement of the footrest assembly less influential on the external carrier, and the method for adjusting the angle of the footrest assembly is simple and easy to arrange and implement.

[0016] In addition, the arrangement of the spiral protrusion and the spiral groove on the inner wall of the transmission hole is not only simple in structure and easy to arrange and implement, but also conducive to the transmission connection between the transmission member and the mounting shaft, thereby driving the footrest to rotate relative to the external carrier, and has good stability during use. The structure of the screw sleeve, the sleeve and the connecting plate is simple, easy to process and form, and the three have a good use effect. The spiral protrusion is arranged on the middle shaft body, which is conducive to arrangement and implementation, and the detachable connection between the end shaft body and the middle shaft body is conducive to the replacement and maintenance of each part.

[0017] In addition, the end shaft body is rectangular, which is conducive to preventing the end shaft body from rotating relative to the external carrier. By setting the bushing, on the one hand, it is conducive to improving the convenience of the footrest to rotate relative to the installation shaft, and on the other hand, the protrusion on the bushing is also conducive to improving the stability of the footrest during use. The limit plate on the footrest is not only conducive to improving the stability of the screw during rotation, but also can limit the displacement of the transmission member, thereby further improving the use effect of the transmission member. By setting the torsion spring, it is conducive to eliminating the movement gap of the footrest during rotation and preventing the vibration of the footrest caused by the gap.

[0018] In addition, another object of the present invention is to provide a seat, on which the footrest assembly as described above is provided.

[0019] Furthermore, two ends of the seat back frame are provided with fixing frames respectively; the fixing frames protrude backwards, and two ends of the mounting shaft are respectively provided on the fixing frames at corresponding ends.

[0020] The seat of the utility model is provided with the footrest assembly as above, which is conducive to improving the comfort of the seat. The fixing frame protruding backward is conducive to the installation of the installation shaft on the backrest frame, so as to facilitate the flipping of the footrest relative to the backrest frame, thereby facilitating the use comfort of the footrest.

[0021] In addition, the utility model also provides a vehicle, on which the seat as described above is provided.

[0022] The vehicle described in the utility model is beneficial to improving the comfort of the vehicle by arranging the above seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic structural diagram of the footrest assembly described in Embodiment 1 of the utility model at a first viewing angle;

[0025] Figure 2 This is a schematic structural diagram of the footrest assembly described in Embodiment 1 of the utility model at a second viewing angle;

[0026] Figure 3 It is a structural schematic diagram of the footrest assembly described in the first embodiment of the utility model at a third viewing angle;

[0027] Figure 4 for Figure 3 AA direction section view;

[0028] Figure 5This is a schematic diagram of the structure of the installation shaft according to the first embodiment of the utility model;

[0029] Figure 6 This is a disassembly diagram of the installation shaft described in Embodiment 1 of the present utility model;

[0030] Figure 7 This is a schematic structural diagram of the footrest frame according to the first embodiment of the present utility model;

[0031] Figure 8 This is a schematic structural diagram of the lead screw motor and the transmission member according to the first embodiment of the utility model;

[0032] Fig. 9 This is a structural schematic diagram of the screw motor according to the first embodiment of the utility model;

[0033] Fig.10 This is a schematic diagram of the structure of the seat described in the second embodiment of the present utility model;

[0034] Fig.11 This is a schematic structural diagram of the footrest in the storage state according to the second embodiment of the present utility model;

[0035] Fig.12 This is a schematic structural diagram of the footrest in the expanded state according to the second embodiment of the present utility model;

[0036] Fig.13 This is a schematic structural diagram of the installation shaft and the fixing bracket in a connected state as described in the second embodiment of the utility model.

[0037] Description of reference numerals:

[0038] 100, footrest; 200, backrest frame; 300, spiral structure;

[0039] 1. Installation shaft; 2. Screw motor; 3. Transmission part; 4. First bushing; 5. Torsion spring; 6. Bolt;

[0040] 101, middle shaft body; 102, end shaft body; 103, spiral protrusion; 104, limit plate; 105, mounting plate; 106, front connecting plate; 107, connecting shaft; 108, middle connecting plate; 109, mounting frame; 110, extension part; 111, reinforcement protrusion; 112, first limit block; 113, second limit block; 114, second bushing; 115, plug block; 116, slot;

[0041] 201, lead screw; 202, fixed frame; 203, third limit block; 204, connecting block;

[0042] 301, screw sleeve; 302, sleeve; 3021, cylindrical part; 3022, connecting part; 303, connecting plate; 304, transmission hole; 305, spiral groove;

[0043] 401. Columnar portion; 402. Protruding ring. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0045] In the description of the present utility model, it should be noted that the directional words such as "up, down, left, right, front, and back" used in the present embodiment are defined based on the up-down direction, left-right direction, and front-back direction of the automobile. Among them, the up-down direction of the automobile is also the height direction of the automobile (Z direction), the front-back direction of the automobile is also the length direction of the automobile (X direction), and the left-right direction of the automobile is also the width direction of the automobile (Y direction). In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] Embodiment 1

[0049] The present embodiment relates to a footrest assembly to solve the problem in the prior art that the footrest assembly is complex in arrangement and difficult to assemble on an external carrier (such as a vehicle seat).

[0050] In terms of overall structure, the footrest assembly includes a mounting shaft 1, a footrest 100 rotatably mounted on the mounting shaft 1, a lead screw motor 2 mounted on the footrest 100, and a transmission member 3 disposed between a lead screw 201 of the lead screw motor 2 and the mounting shaft 1. The mounting shaft 1 is used to mount the footrest assembly on an external carrier, the transmission member 3 is screwed to the lead screw 201, and a spiral structure 300 is disposed between the transmission member 3 and the mounting shaft 1. The transmission member 3 is driven by the lead screw motor 2 to move along the axial direction of the lead screw 201, and under the transmission of the spiral structure 300, the footrest 100 is pulled to rotate relative to the mounting shaft 1.

[0051] The footrest assembly described in this embodiment is installed on an external carrier through the installation shaft 1, which has the advantages of simple assembly and low cost. By arranging the spiral structure 300 between the transmission member 3 and the installation shaft 1, when the transmission member 3 is driven by the screw motor 2 to move along the axial direction of the screw 201, the footrest 100 can be driven to rotate relative to the installation shaft 1 under the transmission of the spiral structure 300, so as to facilitate the adjustment of the flip angle of the footrest assembly, and make the arrangement of the footrest assembly less affected by the external carrier, and the angle adjustment method of the footrest assembly is simple and easy to arrange and implement.

[0052] Based on the above overall introduction, an exemplary structure of the footrest assembly described in this embodiment is as follows: Figures 1 to 3 As shown in . The external carrier can be any part that needs to be arranged with the footrest 100, for example, the external carrier can be the backrest frame 200 of the seat, etc. The footrest 100 in this embodiment includes a footrest frame, and a coating body coated outside the footrest frame. The screw motor 2 is specifically arranged on the footrest frame, which is conducive to the arrangement of the screw motor 2, and the screw motor 2 can be shielded by the coating body, thereby facilitating the overall aesthetics and refinement of the footrest assembly.

[0053] As a feasible implementation method, Figure 1 and Figure 2 As shown in , the footrest frame includes two mounting plates 105 relatively arranged on the left and right sides, and the rear ends of the two mounting plates 105 are rotatably connected to the mounting shaft 1. A front connecting plate 106 is connected between the front ends of the two mounting plates 105, and a connecting shaft 107 arranged close to the mounting shaft 1 is also connected between the two mounting plates 105, and a middle connecting plate 108 located between the two mounting plates 105 is also provided between the front connecting plate 106 and the connecting shaft 107. The footrest frame can be turned up and down relative to the external carrier with the mounting shaft 1 as the rotating shaft, so as to meet different usage requirements.

[0054] In this embodiment, the mounting plate 105, the front connecting plate 106, the middle connecting plate 108 and the connecting shaft 107 in the footrest frame are simple in structure and easy to arrange and implement, thereby helping to reduce production costs. Of course, in specific implementation, the structure of the footrest frame can still be adaptively adjusted according to usage requirements, as long as the usage requirements are met.

[0055] As a preferred embodiment, Figure 1As shown in the figure, the spiral structure 300 includes a spiral protrusion 103 provided on the outer wall of the installation shaft 1, and a transmission hole 304 provided on the transmission member 3, and a spiral groove 305 matching the spiral protrusion 103 is provided on the inner wall of the transmission hole 304. The spiral protrusion 103 and the spiral groove 305 in this embodiment are not only simple in structure and easy to arrange and implement, but also conducive to realizing the transmission connection between the transmission member 3 and the installation shaft 1, and making the footrest 100 rotate relative to the external carrier, and having good stability during use.

[0056] In terms of specific structure, Figure 5 and Figure 7 As shown in the figure, there are four spiral protrusions 103 spirally wound on the outer wall along the axial direction of the installation axis 1, and the spiral grooves 305 on the inner wall of the transmission hole 304 are arranged in a one-to-one correspondence with the spiral protrusions 103. In other words, with the spiral cooperation between the spiral grooves 305 on the transmission member 3 and the corresponding spiral protrusions 103, when the transmission member 3 moves along the axial direction of the installation axis 1, it can drive the footrest frame to rotate around the installation axis 1, so that the footrest 100 turns upside down. Of course, the number of spiral protrusions 103 and spiral grooves 305 can also be adaptively adjusted according to the use requirements.

[0057] The mounting shaft 1 is an important component for mounting the footrest 100 on an external carrier. Its preferred exemplary structure is as follows: Figure 6 As shown in . The installation shaft 1 includes a middle shaft body 101 and end shaft bodies 102 detachably arranged at both ends of the middle shaft body 101. Spiral protrusions 103 are arranged on the middle shaft body 101, and the end shaft bodies 102 at both ends are used to connect with an external carrier. The spiral protrusions 103 are arranged on the middle shaft body 101, which is convenient for arrangement and implementation. Through the detachable connection between the end shaft bodies 102 and the middle shaft body 101, it is convenient to replace and maintain each part.

[0058] In terms of detailed structure, a reinforcing protrusion 111 is provided on the circumference of the middle shaft body 101 and is radially outwardly protruding and arranged along the circumferential edge of the mounting shaft 1, and the above-mentioned multiple spiral protrusions 103 are specifically arranged on the reinforcing protrusion 111. This is conducive to improving the structural strength of the threaded protrusion, and further to improving the durability of the spiral structure 300.

[0059] As a preferred embodiment, Figure 6As shown in , the cross-section of the two end shaft bodies 102 is rectangular, and a bushing is sleeved on each end shaft body 102. Among them, the mounting hole on the external carrier for the end shaft body 102 to pass through is also rectangular, so as to prevent the mounting shaft 1 from rotating relative to the external carrier. By providing the bushing, on the one hand, it is helpful to improve the convenience of the footrest 100 rotating relative to the mounting shaft 1, and on the other hand, the protrusion on the bushing is also helpful to improve the stability of the footrest 100 during use. In order to distinguish it from the bushing described below, the bushing on the end shaft body 102 in this embodiment is called the first bushing 4.

[0060] like Figure 5 As shown in , the first bushing 4 has a columnar portion 401, and a convex ring 402 arranged on one side of the columnar portion 401. The footrest 100 is rotatably arranged on the columnar portion 401, and the convex ring 402 is used to limit the axial displacement of the footrest 100 along the installation axis 1. Here, the cross-section of the end shaft body 102 is rectangular, which is beneficial to prevent the end shaft body 102 from rotating relative to the external carrier, thereby facilitating the improvement of the installation effect of the installation axis 1 on the external shaft body. The cross-section of the inner circumferential wall of the columnar portion 401 in the first bushing 4 is also rectangular, which is arranged in accordance with the end shaft body 102, thereby facilitating the prevention of the first bushing 4 from rotating relative to the end shaft body 102. In addition to being rectangular, the cross-section of the end shaft body 102 can also be other non-circular geometric shapes.

[0061] The mounting plates 105 on each side are respectively blocked on the inner side of the convex ring 402 part, that is to say, the cooperation of the two convex rings 402 on the left and right first bushings 4 can limit the displacement of the footrest frame on the mounting shaft 1, and further improve the rotational stability of the footrest frame on the mounting shaft 1. In order to further improve the installation firmness of the first bushing 4 on the corresponding end shaft body 102, bolts 6 are passed through the columnar part 401 of each first bushing 4, and threaded holes that can be screwed to the bolts 6 are provided on the columnar part 401. The first bushing 4 installed on the end part can be fixed on the end shaft body 102 by passing the bolts 6 through the columnar part 401 and screwing them to the corresponding threaded holes. The installation method of the first bushing 4 here is simple, easy to operate and implement, and has good connection firmness.

[0062] In addition, if Figure 6 As shown in the figure, in order to facilitate the connection between the end shaft body 102 and the middle shaft body 101, slots 116 are respectively provided at both ends of the middle shaft body 101, and an insert block 115 inserted in the slot 116 is provided at the end of the end shaft body 102. Among them, the cross section of the insert block 115 is rectangular, and the slot 116 is arranged in accordance with the shape of the insert block 115 to ensure that the two cannot rotate relative to each other in the inserted state.

[0063] Specifically, the end face and one side of the slot 116 are open, so that the insert block 115 on the end shaft body 102 can be inserted into the slot 116 along the radial direction of the middle shaft body 101, and the insert block 115 is inserted into place by the abutment between the insert block 115 and the bottom of the slot 116. Furthermore, a threaded hole is provided on the insert block 115, and a connecting hole is provided on the middle shaft body 101 to communicate with the slot 116. The bolt 6 passes through the connecting hole and is screwed to the threaded hole, so that the end shaft body 102 and the middle shaft body 101 can be connected together.

[0064] Here, the connection method of the end shaft body 102 and the middle shaft body 101 is simple, easy to install and disassemble, so that it is easy to replace and maintain after any one of the end shaft body 102 and the middle shaft body 101 is damaged. Compared with the solution of the entire installation shaft 1 being integrally formed, it is conducive to reducing the replacement and maintenance costs of the installation shaft 1. It should be noted that in this embodiment, the solution in which only the cross section of one end shaft body 102 is rectangular is also feasible. In this case, it is sufficient as long as the installation shaft 1 is fixedly arranged relative to the external carrier.

[0065] As a preferred embodiment, Figure 1 As shown in the figure, an extension part 110 extending into the footrest frame is provided at the rear end of the left mounting plate 105, a mounting frame 109 is installed between the two extension parts 110, and the lead screw motor 2 is specifically installed on the mounting frame 109. In this embodiment, the cross section of the mounting frame 109 is "n" shaped, and the two sides thereof are respectively provided with flanges turned outward. The flanges are welded to the bottom extension part 110, and the top of the mounting frame 109 is welded to the top extension part 110.

[0066] The screw motor 2 is specifically installed on the mounting frame 109 by passing through the mounting frame 109 and its own bolt 6. The screw of the screw motor 2 extends along the axial direction of the mounting shaft 1. When the screw 201 rotates around its own axis, the transmission member 3 can move along the axial direction of the mounting shaft 1, and drive the foot support frame to rotate relative to the mounting shaft 1 through the spiral structure 300. Here, the structure of the mounting frame 109 is simple, which is convenient for arrangement and implementation on the foot support frame, and is conducive to the installation of the screw motor 2.

[0067] Combination Figure 7 and Figure 8As shown in , the transmission member 3 in this embodiment includes a screw sleeve 301, a sleeve 302, and a connecting plate 303 that detachably connects the screw sleeve 301 and the sleeve 302. The screw sleeve 301 is screwed to the lead screw 201, and the spiral structure 300 is arranged between the sleeve 302 and the installation shaft 1. The sleeve 302 is located on the side of the screw sleeve 301 facing the installation shaft 1, and the sleeve 302 includes a cylindrical portion 3021 and a plate-shaped connecting portion 3022 connected to the cylindrical portion 3021. The transmission hole 304 and the spiral groove 305 are arranged on the cylindrical portion 3021.

[0068] The connecting plate 303 is specifically connected to the connecting portion 3022 and the bottom of the screw sleeve 301. Figure 8 As shown in , the connecting portion 3022 is provided with two threaded holes arranged at intervals, and the bolt 6 is threadedly connected with the corresponding threaded holes after passing through the connecting plate 303, so that the sleeve 302 can be installed on the connecting plate 303. The connecting plate 303 is provided with an arc-shaped welding portion, and the connecting plate 303 is wrapped outside the screw sleeve 301 through the welding portion, and is welded and connected with the screw sleeve 301, so as to realize the connection between the screw sleeve 301 and the sleeve 302. In this embodiment, the structure of the screw sleeve 301, the sleeve 302 and the connecting plate 303 is simple, easy to process and shape, and the use effect of the three is good. It can be understood that, during the specific implementation, other forms of connecting structures can also be used to connect the sleeve 302 and the screw sleeve 301 together, as long as the use requirements are met.

[0069] As a preferred embodiment, Figure 7 As shown in , a limit plate 104 is provided on the footrest 100, and the lead screw 201 is inserted in the limit plate 104 and can rotate relative to the limit plate 104. The limit plate 104 is used to limit the displacement of the transmission member 3 along the axial direction of the lead screw 201. The limit plate 104 here can not only limit the displacement of the transmission member 3 in the direction away from the lead screw motor 2, but also help to improve the stability of the lead screw 201 during rotation.

[0070] Specifically, the limit plate 104 is specifically blocked on one side of the screw sleeve 301, thereby limiting the displacement of the transmission member 3. The free end of the lead screw 201 is arranged on the connecting shaft 107. In order to allow the free end of the lead screw 201 to be rotatably arranged on the limit plate 104, a through hole is provided on the limit plate 104, and a second bushing 114 is provided at the through hole, and the free end of the lead screw 201 is rotatably arranged in the second bushing 114.

[0071] In order to further improve the limiting effect of the limiting plate 104 during use, Fig. 9As shown in , a first limit block 112 is provided on one side of the limit plate 104 facing the screw sleeve 301, and a second limit block 113 connected to the free end of the lead screw 201 is provided on the other side of the limit plate 104. The limit plate 104 is specifically abutted against the screw sleeve 301 through the first limit block 112. The first limit block 112 is preferably made of rubber material to have a good buffering effect and to prevent the screw sleeve 301 and the limit plate 104 from directly contacting and generating abnormal noise. The second limit block 113 is used to prevent the lead screw 201 from coming off the limit plate 104, thereby further improving the stability of the lead screw 201 during rotation.

[0072] In addition, still refer to Fig. 9 As shown in , a third limit block 203 is also provided on the lead screw motor 2, and the third limit block 203 is arranged opposite to the first limit block 112 so as to be able to abut against the screw sleeve 301, thereby limiting the displacement of the screw sleeve 301 in the direction close to the lead screw motor 2, that is, the third limit block 203 and the first limit block 112 define a moving space for the screw sleeve 301, thereby ensuring that the spiral protrusion 103 and the corresponding spiral groove 305 are in a matching state during the rotation of the footrest frame, thereby facilitating the flipping effect of the footrest 100. The flipping angle and position of the footrest 100 are determined by the lead screw 201, which has the advantages of convenient adjustment and high precision, and can make the flipping of the footrest 100 more flexible.

[0073] As a preferred embodiment, in this embodiment, a torsion spring 5 is sleeved on the mounting shaft 1, one end of the torsion spring 5 is connected to the mounting shaft 1, and the other end is connected to the footrest 100. The torsion spring 5 is provided here to help eliminate the movement gap of the footrest 100 during rotation and prevent the footrest 100 from vibrating due to the gap.

[0074] like Figure 1 As shown in , torsion springs 5 ​​are provided on both ends of the middle shaft body 101, and the two torsion springs 5 ​​are respectively located at the two ends of the reinforcing protrusion 111. The cooperation of the two torsion springs 5 ​​is conducive to further improving the stability of the footrest 100 during flipping. Hooks are provided at both ends of the torsion spring 5, wherein the hook provided at one end close to the reinforcing protrusion 111 is hooked on the connecting shaft 107, thereby being connected to the footrest 100. The hook at the other end of the torsion spring 5 is hooked on the bolt 6 used to connect the middle shaft body 101 and the end shaft body 102. The connection method of the torsion spring 5 here is simple, easy to arrange and implement, and has a good connection effect.

[0075] The footrest assembly of the present embodiment can be installed on an external carrier only by installing the mounting shaft 1 on the external carrier, which is beneficial to the arrangement of the footrest assembly. The structure of the entire footrest assembly is simple and easy to arrange and implement. The entire footrest assembly does not need to be disassembled and assembled, and the assembly is simpler, which helps to reduce the difficulty and cost of assembly. At the same time, it has little impact on the structure of the external carrier and has good platform and versatility.

[0076] In addition, even if the footrest assembly is damaged, the end shaft bodies 102 at both ends will break first, and only the broken end shaft bodies 102 need to be replaced, so that the maintenance cost of the entire footrest assembly is low.

[0077] Embodiment 2

[0078] This embodiment relates to a seat, on which the footrest assembly described in the first embodiment is provided. Figure 10 to Figure 11 As shown in FIG. 1 , the footrest assembly has a stowed state in which it is stowed on the backrest frame 200 , and an unfolded state in which it is unfolded.

[0079] like Fig.13 As shown in , to facilitate the installation of the footrest assembly, the two ends of the backrest frame 200 of the seat are respectively provided with fixing frames 202, the fixing frames 202 protrude backwards, and the two ends of the installation shaft 1 are respectively arranged on the fixing frames 202 at the corresponding ends. The setting of the fixing frames 202 here is conducive to the installation of the installation shaft 1 on the backrest frame 200, and can reduce the impact on the structure of the backrest frame 200, and is also conducive to ensuring the use effect of the footrest 100.

[0080] In terms of detailed structure, the free end of each end shaft body 102 is extended out of the corresponding fixing frame 202, and a connection block 204 is welded on the free end of each end shaft body 102, and a threaded hole is provided on the connection block 204. After the end shaft body 102 is installed in place on the fixing frame 202, the bolt 6 passes through the end shaft body 102 and is screwed with the threaded hole on the connection block 204, so that the installation shaft 1 can be installed on the fixing frame 202. The two connection blocks 204 in the installed state can respectively abut against the outer side of the corresponding fixing frame 202, thereby limiting one end of the installation shaft 1 along its own axial direction, and further improving the installation reliability and stability of the installation shaft 1 on the installation carrier.

[0081] The seat described in this embodiment is helpful to improve the sitting comfort by providing the above-mentioned footrest assembly.

[0082] In addition, the utility model also provides a vehicle, on which the seat as described above is provided.

[0083] The vehicle described in this embodiment is helpful to improve the comfort of the vehicle by arranging the above seats.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A footrest assembly, characterized in that: It comprises a mounting shaft (1), a footrest (100) rotatably mounted on the mounting shaft (1), a lead screw motor (2) mounted on the lead screw motor (100), and a transmission member (3) disposed between a lead screw (201) of the lead screw motor (2) and the mounting shaft (1); The mounting shaft (1) is used to mount the footrest assembly on an external carrier, the transmission member (3) is threadedly connected to the lead screw (201), and a spiral structure (300) is provided between the transmission member (3) and the mounting shaft (1), the transmission member (3) is driven by the lead screw motor (2) to move along the axial direction of the lead screw (201), and under the transmission of the spiral structure (300), the footrest (100) is pulled to rotate relative to the mounting shaft (1).

2. The footrest assembly according to claim 1, characterized in that: The spiral structure (300) comprises a spiral protrusion (103) arranged on the outer wall of the installation shaft (1), and a transmission hole (304) arranged on the transmission member (3), and a spiral groove (305) matching the spiral protrusion (103) is arranged on the inner wall of the transmission hole (304).

3. The footrest assembly according to claim 2, characterized in that: The transmission member (3) comprises a screw sleeve (301), a sleeve (302), and a connecting plate (303) for detachably connecting the screw sleeve (301) and the sleeve (302); The screw sleeve (301) is threadedly connected to the lead screw (201), and the spiral structure (300) is arranged between the sleeve (302) and the installation shaft (1).

4. The footrest assembly according to claim 2, characterized in that: The installation shaft (1) comprises a middle shaft body (101) and end shaft bodies (102) detachably arranged at both ends of the middle shaft body (101); The spiral protrusion (103) is arranged on the middle shaft body (101), and the end shaft bodies (102) at both ends are used to be connected to the external carrier.

5. The footrest assembly according to claim 4, characterized in that: At least one of the end shaft bodies (102) has a rectangular cross section, and a bushing is sleeved on the end shaft body (102); The bushing has a columnar portion (401) and a convex ring (402) arranged on one side of the columnar portion (401), the footrest (100) is rotatably arranged on the columnar portion (401), and the convex ring (402) is used to limit the axial displacement of the footrest (100) along the installation axis (1).

6. The footrest assembly according to claim 1, characterized in that: The footrest (100) is provided with a limiting plate (104), and the lead screw (201) is inserted into the limiting plate (104) and can rotate relative to the limiting plate (104); The limiting plate (104) is used to limit the axial displacement of the transmission member (3) along the lead screw (201).

7. The footrest assembly according to any one of claims 1 to 6, characterized in that: A torsion spring (5) is sleeved on the installation shaft (1); one end of the torsion spring (5) is connected to the installation shaft (1), and the other end is connected to the footrest (100).

8. A seat, characterized in that: The seat is provided with a footrest assembly according to any one of claims 1 to 7.

9. The seat according to claim 8, characterized in that: Both ends of the seat backrest frame (200) are respectively provided with fixing frames (202); The fixing frame (202) protrudes backwards, and the two ends of the installation shaft (1) are respectively arranged on the fixing frame (202) at the corresponding ends.

10. A vehicle, characterized in that: The vehicle is provided with the seat according to claim 8 or 9.

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