Fitness device installed on automobile seat

Abstract

A fitness device installed on an automobile seat comprises a body, the body comprises a first connecting part, a second connecting part and a contact part, one end of the first connecting part is rotatably connected with a first installation face of the seat, one end of the second connecting part is rotatably connected with a second installation face of the seat, and the contact part is connected with the first connecting part. The left end and the right end of the contact part are connected with the first connecting part and the second connecting part respectively, the main body has a first position and a second position relative to the seat, the main body can move between the first position and the second position relative to the seat, the supporting effect can be achieved, back row passengers can take exercises conveniently, and the safety of the seat is improved. The whole structure is simple, and good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a fitness device installed on a car seat. Background Art

[0002] Cars are an essential means of transportation in people's lives. As people spend more and more time in cars, they have higher and higher requirements for the comfort of the interior of cars. Due to the limited space inside the car, it is difficult for rear passengers to stretch their bodies during the ride. When the legs of rear passengers are bent and kept in the same posture for a long time, it is easy to cause leg strain, increase fatigue during the ride, and affect the passengers' riding experience. Therefore, it is urgent to propose a fitness device installed on the car seat that can improve the passengers' riding experience. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a fitness device installed on a car seat, which can support the legs or feet of rear passengers, and the rear passengers can exercise their legs, which is beneficial to improving the riding experience.

[0004] The utility model provides a fitness device installed on a car seat, comprising a main body, wherein the main body comprises a first connecting part, a second connecting part and a contact part, one end of the first connecting part is rotatably connected to a first mounting surface of the seat, one end of the second connecting part is rotatably connected to a second mounting surface of the seat, the left and right ends of the contact part are respectively connected to the first connecting part and the second connecting part, the main body has a first position and a second position relative to the seat, and the main body can move between the first position and the second position relative to the seat.

[0005] In one embodiment, the first connecting portion includes a first side panel, the second connecting portion includes a second side panel, the first side panel and the second side panel are arranged in parallel, the left and right ends of the contact portion are connected to the first side panel and the second side panel, and the first side panel and the second side panel are connected to the seat via a connecting shaft and an elastic member, respectively.

[0006] In one embodiment, the contact portion includes a base member and a sleeve, the left and right ends of the base member are respectively connected to the first side plate and the second side plate, the sleeve includes a sleeve hole matching the base member, and the sleeve is sleeved on the base member through the sleeve hole.

[0007] In one embodiment, the contact portion includes a tread member, the tread member is connected to the sleeve along a front-to-rear direction, and the sleeve can rotate around its own axis relative to the base member.

[0008] In one embodiment, a clamp is provided at the left and right ends of the kit, a clamp shaft is protruding from the first side plate and the second side plate, a clamp groove cooperating with the clamp shaft is opened on the clamp, and when the pedal is parallel to the ground, the clamp shaft is clamped in the clamp groove.

[0009] In one embodiment, a first limiting portion and a second limiting portion are provided on the first mounting surface and the second mounting surface of the seat, the first limiting portion is used to limit the main body to the second position, and the second limiting portion is used to limit the main body to the first position.

[0010] In one embodiment, the first limiting portion includes a first connecting plate and a lower limiting plate, the first connecting plate is connected to the seat, the lower limiting plate is connected to the lower end of the first connecting plate, the lower limiting plate protrudes and extends toward an end away from the seat, and the lower limiting plate is used to contact the first side plate and the second side plate.

[0011] In one embodiment, the second limiting portion includes a second connecting plate and an upper limiting plate, the second connecting plate is connected to the seat, the upper limiting plate is connected to the upper end of the second connecting plate, the upper limiting plate protrudes and extends toward an end away from the seat, and the upper limiting plate is used to contact the first side plate and the second side plate.

[0012] In one embodiment, first baffles are provided at the upper and lower ends of the first side plate, and the first baffles are used to contact the first limiting portion or the second limiting portion, and / or second baffles are provided at the upper and lower ends of the second side plate, and the second baffles are used to contact the first limiting portion or the second limiting portion.

[0013] In one embodiment, an energy recovery unit is further included, wherein the energy recovery unit is connected to the first connection unit or the second connection unit, and the energy recovery unit is used to convert the rotation of the first connection unit or the second connection unit relative to the seat into electrical energy.

[0014] The beneficial effects of the utility model are:

[0015] A main body is arranged on the seat, and the main body can play a supporting role for the legs or feet of the passengers, thereby improving the riding comfort of the passengers. Moreover, since the main body can move between a first position and a second position, the rear passengers can change the position of the main body relative to the seat by applying an external force to the main body, and can exercise their legs in the car.

[0016] The main body includes a first connection part and a second connection part which are rotatably connected to the seat. The relative position of the contact part and the seat can be changed by rotating the first connection part and the second connection part. The contact part is used to contact the legs or feet of the passenger and can play a supporting role. The passenger can exercise and the muscle fatigue of the passenger can be relieved. The overall structure is simple, there is no need to make major changes to the structure of the seat, the manufacturing and installation costs are low, and it has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model in which the main body is located in the first position;

[0019] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the utility model in which the main body is located in the second position;

[0020] Figure 3 It is an exploded schematic diagram of the main body of an embodiment of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the cooperation between the main body, the first limiting part and the second limiting part of another embodiment of the utility model.

[0022] In the figure:

[0023] 10-seat; 101-first mounting surface; 102-second mounting surface; 11-first limiting portion; 111-first connecting plate; 112-lower limiting plate; 12-second limiting portion; 121-second connecting plate; 122-upper limiting plate;

[0024] 20-main body; 201-first position; 202-second position; 21-first connecting part; 211-first side plate; 2111-first axial hole; 2112-first baffle; 2113-clamping shaft; 213-connecting shaft; 214-elastic member; 22-second connecting part; 221-second side plate; 2211-second axial hole; 2212-second baffle; 23-contact part; 231-base member; 232-kit; 2321-sleeve hole; 233-pedal member; 234-clamping member; 2341-card slot; 30-energy recovery part. DETAILED DESCRIPTION

[0025] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0028] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0029] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0030] Combined with Figure 1 To Attachment Figure 3 The utility model proposes a fitness device installed on a car seat, which includes a main body 20 installed on the seat 10, and the main body 20 includes a first connecting portion 21, a second connecting portion 22 and a contact portion 23. One end of the first connecting portion 21 is rotatably connected to a first mounting surface 101 of the seat 10, and one end of the second connecting portion 22 is rotatably connected to a second mounting surface 102 of the seat 10. The left and right ends of the contact portion 23 are respectively connected to the first connecting portion 21 and the second connecting portion 22, and the contact portion 23 moves synchronously with the first connecting portion 21 and the second connecting portion 22. The contact portion 23 is used to contact with the legs or feet of the passenger. The main body 20 has a first position 201 and a second position 202 relative to the seat 10, and the main body 20 can move between the first position 201 and the second position 202 relative to the seat 10.

[0031] It can be understood that the first mounting surface 101 and the second mounting surface 102 are two opposite surfaces on the left and right of the seat 10 .

[0032] As attached Figure 3 As shown, the first connecting portion 21 includes a first side panel 211, and the second connecting portion 22 includes a second side panel 221. The first side panel 211 and the second side panel 221 are arranged parallel to the left and right sides of the seat 10, and the left and right ends of the contact portion 23 are respectively connected to the first side panel 211 and the second side panel 221.

[0033] Combined with Figure 3 and attached Figure 4 A first shaft hole 2111 is provided on the first side plate 211, a second shaft hole 2211 is provided on the second side plate 221, a first connecting hole matched with the first shaft hole 2111 is provided on the first mounting surface 101, and a second connecting hole matched with the second shaft hole 2211 is provided on the second mounting surface 102. The first side plate 211 is connected to the seat 10 through a connecting shaft 213 and an elastic member 214, and the second side plate 221 is connected to the seat 10 through a connecting shaft 213 and an elastic member 214. The first side plate 211 and the second side plate 221 can rotate relative to the seat 10 around the axial direction of the connecting shaft 213 under the action of an external force to change the position of the contact portion 23 relative to the seat 10. The elastic member 214 is used to provide an elastic force to reset the contact portion 23 between the first position 201 and the second position 202, and can provide a certain damping force, so that when the passenger uses the main body 20 to exercise the legs or feet, there can be a certain resistance, the exercise intensity is moderate, and a good exercise experience can be brought to the passenger.

[0034] Exemplarily, the elastic member 214 is a torsion spring and is sleeved on the connecting shaft 213 .

[0035] It can be understood that if the initial position of the main body 20 is the first position 201, when the main body 20 moves to the second position 202 under the external force of the passenger, the elastic member 214 produces elastic deformation and has an elastic force to restore the main body 20 from the second position 202 to the first position 201.

[0036] In an optional solution, a rubber pad is provided at one end of the first side panel 211 close to the first mounting surface 101, and the first side panel 211 contacts the first mounting surface 101 through the rubber pad. The rubber pad is used to increase the friction between the first side panel 211 and the first mounting surface 101, and can have a silent effect to avoid abnormal noise during exercise, which is beneficial to improving the passenger's usage experience and riding experience.

[0037] In one example of the present invention, Figure 1 and attached Figure 2A first limiting portion 11 and a second limiting portion 12 are provided on the first mounting surface 101 and the second mounting surface 102 of the seat 10. The first limiting portion 11 is used to limit the main body 20 to the second position 202, and the second limiting portion 12 is used to limit the main body 20 to the first position 201. The first limiting portion 11 and the second limiting portion 12 cooperate to prevent the main body 20 from leaving the range of the first position 201 and the second position 202 during exercise, so as to ensure the passenger's user experience during exercise.

[0038] By adjusting the positions of the first limiting portion 11 and the second limiting portion 12, the range of movement of the main body 20 can be adjusted, and then the exercise intensity of the passenger can be adjusted. Technical personnel in this field can set the positions of the first limiting portion 11 and the second limiting portion 12 on the seat 10 according to the requirements of the interior space of the vehicle.

[0039] As attached Figure 4 As shown, the first limiting portion 11 includes a first connecting plate 111 and a lower limiting plate 112. The first connecting plate 111 is used to connect to the seat 10. More specifically, the first connecting plate 111 is used to connect to the first mounting surface 101 and the second mounting surface 102 of the seat 10. The lower limiting plate 112 is connected to the lower end of the first connecting plate 111, and the lower limiting plate 112 protrudes and extends in the left-right direction toward an end away from the seat 10. The lower limiting plate 112 is used to contact the first side plate 211 and the second side plate 221 to limit the first side plate 211 and the second side plate 221.

[0040] In one optional solution, the first connecting plate 111 is connected to the seat 10 by welding. In another optional solution, the first connecting plate 111 is detachably connected to the seat 10 by screwing, so as to adjust the position of the first limiting portion 11 on the seat 10.

[0041] Exemplarily, the first connecting plate 111 is vertically connected to the lower limiting plate 112 .

[0042] Exemplarily, the first connecting plate 111 and the lower limiting plate 112 are integrally formed.

[0043] As attached Figure 4 As shown, the second limiting portion 12 includes a second connecting plate 121 and an upper limiting plate 122. The second connecting plate 121 is used to connect to the seat 10. More specifically, the second connecting plate 121 is used to connect to the first mounting surface 101 and the second mounting surface 102 of the seat 10. The upper limiting plate 122 is connected to the upper end of the second connecting plate 121, and the upper limiting plate 122 protrudes and extends in the left-right direction toward an end away from the seat 10. The upper limiting plate 122 is used to contact the first side plate 211 and the second side plate 221 to limit the first side plate 211 and the second side plate 221.

[0044] In one optional solution, the second connecting plate 121 is connected to the seat 10 by welding. In another optional solution, the second connecting plate 121 is detachably connected to the seat 10 by screwing, so as to adjust the position of the second limiting portion 12 on the seat 10.

[0045] Exemplarily, the second connecting plate 121 is vertically connected to the upper limit plate 122 .

[0046] Exemplarily, the second connecting plate 121 and the upper limit plate 122 are integrally formed.

[0047] In one alternative, as shown in the attached Figure 3 As shown, a first baffle 2112 is provided at the upper and lower ends of the first side panel 211. The first baffle 2112 protrudes and extends along the left-right direction toward one end close to the seat 10. The first baffle 2112 contacts the first mounting surface 101, and the first baffle 2112 is used to contact the first limiting portion 11 or the second limiting portion 12. The first baffle 2112 can increase the contact area between the first side panel 211 and the first limiting portion 11 or the second limiting portion 12 to ensure that the main body 20 has good stability during exercise.

[0048] Exemplarily, a rubber pad is provided at one end of the first baffle plate 2112 close to the first mounting surface 101. The first baffle plate 2112 is in contact with the first mounting surface 101 via the rubber pad, which can reduce abnormal noise and improve the user experience.

[0049] Exemplarily, the upper end of the first baffle 2112 is provided with a rubber pad that cooperates with the upper limit plate 122, and the lower end of the first baffle 2112 is provided with a rubber pad that cooperates with the lower limit plate 112, which can reduce abnormal noise and help improve the user experience.

[0050] Exemplarily, the first baffle plate 2112 is vertically connected to the first side plate 211 .

[0051] Exemplarily, the first baffle plate 2112 and the first side plate 211 are integrally formed.

[0052] In one alternative, as shown in the attached Figure 3 As shown, second baffle plates 2212 are provided at the upper and lower ends of the second side plate 221. The second baffle plate 2212 protrudes and extends toward the side close to the second mounting surface 102. The second baffle plate 2212 contacts the second mounting surface 102, and the second baffle plate 2212 is used to contact the first limiting portion 11 or the second limiting portion 12. The second baffle plate 2212 can increase the contact area between the second side plate 221 and the first limiting portion 11 or the second limiting portion 12 to ensure that the main body 20 has good stability during exercise.

[0053] Exemplarily, a rubber pad is provided at one end of the second baffle plate 2212 close to the second mounting surface 102 , and the second baffle plate 2212 is in contact with the second mounting surface 102 through the rubber pad.

[0054] Exemplarily, the upper end of the second baffle plate 2212 is provided with a rubber pad that cooperates with the upper limit plate 122, and the lower end of the second baffle plate 2212 is provided with a rubber pad that cooperates with the lower limit plate 112, which can reduce abnormal noise and help improve the user experience.

[0055] Exemplarily, the second baffle plate 2212 is vertically connected to the second side plate 221 .

[0056] Exemplarily, the second baffle plate 2212 and the second side plate 221 are integrally formed.

[0057] In one example of the present invention, as shown in the attached Figure 3 As shown, the contact portion 23 includes a base member 231 and a sleeve 232. The left and right ends of the base member 231 are respectively connected to the first side plate 211 and the second side plate 221. The sleeve 232 includes a sleeve hole 2321 that cooperates with the base member 231. The sleeve hole 2321 penetrates the sleeve 232 in the left and right direction. The sleeve 232 is sleeved on the base member 231 through the sleeve hole 2321.

[0058] Exemplarily, the base member 231 is configured as a cylindrical member, the sleeve 232 is configured as a cylindrical member, and the sleeve 232 is coaxially connected to the base member 231. Optionally, the base member 231 and the sleeve 232 may also be configured as a prism or irregular shape.

[0059] Exemplarily, the sleeve 232 is a rubber sleeve.

[0060] In one optional solution, the base member 231 is connected to the first side plate 211 and the second side plate 221 by welding. In another optional solution, the base member 231 is connected to the first side plate 211 and the second side plate 221 by screwing to achieve a detachable connection, so as to facilitate subsequent maintenance and repair.

[0061] In another example of the present invention, as shown in the attached Figure 4 As shown, the contact portion 23 also includes a pedal 233, which is connected to the kit 232 along the front-to-back direction. The kit 232 can rotate around its own axis relative to the base member 231, so that the position of the pedal 233 relative to the seat 10 can be adjusted. The pedal 233 can increase the contact area with the legs or feet of the passenger, so that the passenger can better apply force to the contact portion 23, thereby enhancing the passenger's user experience.

[0062] Exemplarily, the tread member 233 is integrally formed with the kit 232 .

[0063] As attached Figure 4As shown, the left and right ends of the kit 232 are provided with a clamping member 234, the first side plate 211 and the second side plate 221 are both convexly provided with a clamping shaft 2113, and the clamping member 234 is provided with a clamping slot 2341, and the clamping slot 2341 cooperates with the clamping shaft 2113. When the step member 233 is adjusted to a surface with a larger area parallel to the ground, the clamping shaft 2113 is clamped in the clamping slot 2341, and the step member 233 can be fixed, and the operation is simple and convenient. When the step member 233 is not used, the step member 233 can be adjusted to a surface with a larger area parallel to the rear end of the seat 10 to reduce space occupation and facilitate folding.

[0064] Exemplarily, the card slot 2341 and the card shaft 2113 are interference fit.

[0065] Exemplarily, the length dimension of the first baffle plate 2112 in the front-to-back direction is smaller than the length dimension of the first side plate 211 in the front-to-back direction, and the length dimension of the second baffle plate 2212 in the front-to-back direction is smaller than the length dimension of the second side plate 221 in the front-to-back direction, so as to reserve the matching space between the clamp 234 and the clamp shaft 2113.

[0066] In one example of the present invention, as shown in the attached Figure 3 As shown, an energy recovery unit 30 is provided inside the seat 10, and the energy recovery unit 30 is connected to the main body 20. More specifically, the energy recovery unit 30 is connected to the first connection unit 21 or the second connection unit 22. The energy recovery unit 30 can convert the mechanical rotation of the first connection unit 21 or the second connection unit 22 relative to the seat 10 into electrical energy.

[0067] Exemplarily, the energy recovery unit 30 includes a gear set, a three-phase AC generator, a rectifier bridge, a transformer and a battery that are transmission-connected to the first connection part 21 or the second connection part 22. When the first connection part 21 or the second connection part 22 rotates relative to the seat 10, it can drive the gear set to rotate, and then cooperate with the three-phase AC generator to generate electrical energy. The battery is used to store electrical energy, and the battery can be connected to interior lighting, etc. to achieve power supply.

[0068] Taking two adults exercising at a moderate intensity as an example, 0.3 to 0.4 kWh of electric energy can be generated per hour through the energy recovery unit 30 , and the electric energy generated by the energy recovery unit 30 can be used to improve the endurance of the entire vehicle.

[0069] In summary, the beneficial effects of the fitness device installed on the car seat proposed by the utility model are:

[0070] The main body 20 is arranged on the seat 10, and the main body 20 can support the legs or feet of the passengers, thereby improving the riding comfort of the passengers. Moreover, since the main body 20 can move between the first position 201 and the second position 202, the rear passengers can change the position of the main body 20 relative to the seat 10 by applying external force to the main body 20, and can exercise their legs in the car.

[0071] The main body 20 includes a first connection part 21 and a second connection part 22 which are rotatably connected to the seat 10. The relative position of the contact part 23 and the seat 10 can be changed by rotating the first connection part 21 and the second connection part 22. The contact part 23 is used to contact the legs or feet of the passenger, and can play a supporting role. The passenger can exercise and the muscle fatigue of the passenger can be relieved. The overall structure is simple, and there is no need to make major changes to the structure of the seat 10. The manufacturing and installation costs are low, and it has good practicality.

[0072] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A fitness device installed on a car seat, characterized in that: The invention comprises a main body (20), wherein the main body (20) comprises a first connecting portion (21), a second connecting portion (22) and a contact portion (23), wherein one end of the first connecting portion (21) is rotatably connected to a first mounting surface (101) of a seat (10), and one end of the second connecting portion (22) is rotatably connected to a second mounting surface (102) of the seat (10), and the left and right ends of the contact portion (23) are respectively connected to the first connecting portion (21) and the second connecting portion (22), and the main body (20) has a first position (201) and a second position (202) relative to the seat (10), and the main body (20) can move between the first position (201) and the second position (202) relative to the seat (10).

2. The fitness device installed on a car seat according to claim 1, characterized in that: The first connecting portion (21) includes a first side plate (211), and the second connecting portion (22) includes a second side plate (221). The first side plate (211) and the second side plate (221) are arranged in parallel. The left and right ends of the contact portion (23) are connected to the first side plate (211) and the second side plate (221). The first side plate (211) and the second side plate (221) are connected to the seat (10) via a connecting shaft (213) and an elastic member (214), respectively.

3. The fitness device installed on a car seat according to claim 2, characterized in that: The contact portion (23) comprises a base member (231) and a sleeve (232); the left and right ends of the base member (231) are respectively connected to the first side plate (211) and the second side plate (221); the sleeve (232) comprises a sleeve hole (2321) matched with the base member (231); the sleeve (232) is sleeved on the base member (231) through the sleeve hole (2321).

4. The fitness device installed on a car seat according to claim 3, characterized in that: The contact portion (23) comprises a tread member (233), the tread member (233) is connected to the sleeve (232) along the front-rear direction, and the sleeve (232) can rotate around its own axis relative to the base member (231).

5. The fitness device installed on a car seat according to claim 4, characterized in that: The left and right ends of the kit (232) are provided with clamping members (234); a clamping shaft (2113) is protrudingly provided on the first side plate (211) and the second side plate (221); a clamping groove (2341) cooperating with the clamping shaft (2113) is provided on the clamping member (234); when the pedal (233) is parallel to the ground, the clamping shaft (2113) is clamped in the clamping groove (2341).

6. The fitness device installed on a car seat according to claim 2, characterized in that: The first mounting surface (101) and the second mounting surface (102) of the seat (10) are both provided with a first limiting portion (11) and a second limiting portion (12), wherein the first limiting portion (11) is used to limit the main body (20) to the second position (202), and the second limiting portion (12) is used to limit the main body (20) to the first position (201).

7. The fitness device installed on a car seat according to claim 6, characterized in that: The first limiting portion (11) comprises a first connecting plate (111) and a lower limiting plate (112); the first connecting plate (111) is connected to the seat (10); the lower limiting plate (112) is connected to the lower end of the first connecting plate (111); the lower limiting plate (112) protrudes and extends toward an end away from the seat (10); and the lower limiting plate (112) is used to contact the first side plate (211) and the second side plate (221).

8. The fitness device installed on a car seat according to claim 6, characterized in that: The second limiting portion (12) comprises a second connecting plate (121) and an upper limiting plate (122); the second connecting plate (121) is connected to the seat (10); the upper limiting plate (122) is connected to the upper end of the second connecting plate (121); the upper limiting plate (122) protrudes and extends toward an end away from the seat (10); and the upper limiting plate (122) is used to contact the first side plate (211) and the second side plate (221).

9. The fitness device installed on a car seat according to claim 7 or 8, characterized in that: The first side plate (211) is provided with a first baffle plate (2112) at both upper and lower ends, and the first baffle plate (2112) is used to contact the first limiting portion (11) or the second limiting portion (12); and / or the second side plate (221) is provided with a second baffle plate (2212) at both upper and lower ends, and the second baffle plate (2212) is used to contact the first limiting portion (11) or the second limiting portion (12).

10. The fitness device installed on a car seat according to claim 1, characterized in that: It also includes an energy recovery unit (30), which is connected to the first connection unit (21) or the second connection unit (22), and is used to convert the rotation of the first connection unit (21) or the second connection unit (22) relative to the seat (10) into electrical energy.

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