Back cushion adjusting device and trainer provided with same
By setting first and second handle components and guide sleeves on the trainer, combined with positioning parts and swing arm mechanism, multi-level discrete adjustment of back pad angle and distance is achieved, solving the problem of complicated back pad adjustment steps and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- IMPULSE QINGDAO HEALTH TECH
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-24
AI Technical Summary
The back pad adjustment process in existing trainers is complicated, which affects the user experience.
By setting the adjustment ends of the first and second handle components to extend to the seat, users can easily adjust the angle and distance of the backrest on the seat. Combined with the guide sleeve, positioning parts and swing arm mechanism, multi-level discrete adjustment can be achieved.
The backrest adjustment steps have been reduced to accommodate different users' training postures, thus improving the user experience.
Smart Images
Figure CN224156317U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of fitness equipment technology, and in particular relates to a back pad adjustment device and a training device equipped with the same. Background Technology
[0002] In recent years, with the popularization of fitness awareness, the number of people exercising has continued to rise, which in turn has led to a continuous increase in the demand for fitness equipment.
[0003] The training device in the prior art includes a mounting base, a seat cushion, a back cushion, a support rod, and a pin. The seat cushion is fixed on the mounting base, the back cushion is located on one side of the seat cushion and is rotatably mounted on the mounting base, and the back cushion has multiple positioning holes at the end away from the seat cushion. One end of the support rod is rotatably mounted on the mounting base, and the other end is connected to the positioning hole through the pin, thereby fixing the rotation angle of the back cushion relative to the mounting base.
[0004] However, when users need to adjust the angle of the backrest, they must first get off the seat, walk around to the backrest, and then rotate the backrest using the latch. Because the adjustment steps are complicated, it is very time-consuming and affects the user experience. Utility Model Content
[0005] To address the shortcomings of related technologies, this application provides a backrest adjustment device and a trainer equipped with it. By setting the adjustment ends of the first handle assembly and the second handle assembly to extend to the seat, it is convenient for users to adjust the angle of the backrest and the distance between the seat and the backrest while sitting on the seat, reducing adjustment steps, adapting to different training postures of different users, and improving the user experience.
[0006] On one hand, this application provides a backrest adjustment device for adjusting the backrest of a trainer. The trainer also includes a mounting frame and a seat cushion, the seat cushion being fixed to the mounting frame and located on one side of the backrest. The backrest adjustment device includes:
[0007] An adjustment frame is provided with a plurality of first limiting holes and second limiting holes. One end of the back pad is rotatably mounted on the adjustment frame, and the other end of the back pad rotates to move closer to or away from the seat cushion.
[0008] The swing assembly has one end rotatably mounted on the mounting frame and the other end rotatably connected to the adjustment frame. The swing assembly is used to move the back cushion closer to or away from the seat cushion.
[0009] The first handle assembly extends at one end toward the seat cushion, and the first handle assembly can rotate based on its pivot point with the back cushion, so that its other end can be inserted into or withdrawn from the first limiting hole, making it convenient for the user to sit on the seat cushion and adjust the angle of the back cushion.
[0010] The second handle assembly extends at one end toward the seat cushion, and the second handle assembly can rotate based on its pivot point with the swing assembly, so that its other end can be inserted into or withdrawn from the second limiting hole, making it convenient for the user to sit on the seat cushion and adjust the backrest position.
[0011] In some embodiments, the first handle assembly includes:
[0012] A fastener is fixed to the back of the back pad;
[0013] A first pin is used to pass through the fastener to extend into or withdraw from the first limiting hole;
[0014] The first adjustment handle has one end hinged to the first pin and the other end extending toward the seat cushion. The two ends of the first adjustment handle are rotatably mounted on the fixing member.
[0015] By pushing or pulling the first adjustment handle on the seat cushion to rotate relative to the fixing member, the first adjustment handle causes the first pin to extend into or withdraw from the first limiting hole, thereby stopping or releasing the relative rotation between the fixing member and the adjustment frame.
[0016] In some embodiments, the second handle component includes:
[0017] A second pin is used to pass through the swing assembly to extend into or withdraw from the second limiting hole;
[0018] The second adjustment handle has one end hinged to the second pin and the other end extending toward the seat cushion. The two ends of the second adjustment handle are rotatably mounted on the swing assembly.
[0019] By pushing or pulling the second adjustment handle on the seat cushion to rotate relative to the swing assembly, the second adjustment handle causes the second pin to extend into or withdraw from the second limiting hole, thereby stopping or releasing the relative rotation of the swing assembly and the adjustment frame.
[0020] In some embodiments, the back pad adjustment device further includes:
[0021] The bracket component has one end fixed to the fixing component and the swing assembly, and the other end rotatably connected to the first adjustment handle and the second adjustment handle.
[0022] In some embodiments, the back pad adjustment device further includes:
[0023] A guide sleeve, which is hollow inside and open at both ends, is respectively inserted into the fixing member and the swing assembly, and the two ends of the guide sleeve extend away from the fixing member or the swing assembly.
[0024] The guide sleeve is used to guide the first pin through the fixing member, or to guide the second pin through the swing assembly.
[0025] In some embodiments, the adjustment bracket includes:
[0026] A first positioning component is fixed on one end of the adjustment frame near the back pad. The first positioning component is provided with a plurality of first limiting holes, which are arranged around the rotatable connection between the back pad and the adjustment frame.
[0027] In some embodiments, the adjustment bracket further includes:
[0028] The second positioning member is fixed on the adjustment frame at one end away from the first positioning member. The second positioning member is located on one side of the swing assembly. The second positioning member is provided with a plurality of second limiting holes, which are arranged around the rotational connection between the swing assembly and the adjustment frame.
[0029] In some embodiments, the oscillating component includes:
[0030] The first swing arm has one end rotatably mounted on the mounting frame and the other end rotatably mounted on the adjusting frame;
[0031] The second swing arm is located on the side of the first swing arm away from the seat cushion. One end of the second swing arm is rotatably mounted on the mounting frame, and the other end is rotatably mounted on the adjustment frame.
[0032] The first and second swing arms cooperate to drive the adjustment frame to move the back cushion away from or closer to the seat cushion. The second handle assembly is inserted through the first or second swing arm, thereby stopping or releasing the relative movement between the back cushion and the seat cushion.
[0033] In some embodiments, the back pad adjustment device further includes:
[0034] The drive assembly has one end rotatably mounted on the mounting bracket and the other end rotatably mounted on the back cushion. The drive assembly is used to normally drive the back cushion to move towards the seat cushion.
[0035] On the other hand, a training device is also provided, which is equipped with the back pad adjustment device described in any of the above claims for adjusting the back pad.
[0036] In summary, this application provides a backrest adjustment device and a trainer equipped with it. By setting the adjustment ends of the first handle assembly and the second handle assembly to extend to the seat cushion, it facilitates the user to adjust the angle of the backrest and the distance between the seat cushion and the backrest while sitting on the seat cushion, reducing adjustment steps, adapting to different training postures of different users, and improving the user experience. The first adjustment handle converts the user's manual operation on one side of the seat cushion into the linear movement of the first pin, thereby fixing or releasing the rotation angle of the backrest. The second adjustment handle converts the user's manual operation on one side of the seat cushion into the linear movement of the second pin, thereby fixing or releasing the rotation angle of the backrest. The mechanism includes: locking or releasing relative motion; providing a pivot mounting position for the first or second adjustment handle via a bracket; precisely guiding the first or second pin into the corresponding first or second limiting hole via a guide sleeve; expanding the setting positions of the first and second limiting holes by setting the first and second positioning components respectively, thereby achieving multi-level discrete adjustment; forming a parallel four-bar linkage by cooperating the first and second swing rods to guide the back cushion stably away from or towards the seat cushion; and automatically moving the back cushion towards the seat cushion by setting a drive component to facilitate the user in adjusting the back cushion angle or the distance between the back cushion and the seat cushion.
[0037] Other features and advantages of this application will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practicing the invention. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description
[0038] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0039] Figure 1 This is a perspective view of the back pad adjustment device of this application;
[0040] Figure 2 This is a front view of the back pad adjustment device of this application;
[0041] Figure 3 This is a side view of the back pad adjustment device of this application.
[0042] In the picture:
[0043] 100. Mounting bracket; 200. Seat cushion; 300. Backrest cushion; 400. Adjustment bracket; 401. First positioning component; 402. Second positioning component; 500. Swing assembly; 501. First swing arm; 502. Second swing arm; 600. First handle assembly; 601. First adjustment handle; 602. First pin; 603. Fixing component; 700. Second handle assembly; 701. Second adjustment handle; 702. Second pin; 800. Bracket component; 900. Guide sleeve; 1000. Drive assembly. Detailed Implementation
[0044] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0045] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0046] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.
[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation Example 1
[0049] Reference Appendix Figures 1 to 3 , Figure 1 This is a perspective view of the back pad adjustment device of this application; Figure 2 This is a front view of the back pad adjustment device of this application; Figure 3This is a side view of the back pad adjustment device of this application; the following is in conjunction with the attached... Figures 1 to 3 Specific embodiments are described below.
[0050] Reference Appendix Figures 1 to 3 This application provides a backrest adjustment device for adjusting the backrest 300 of a trainer. The trainer also includes a mounting frame 100 and a seat 200. The seat 200 is fixed on the mounting frame 100 and located on one side of the backrest 300. The backrest adjustment device includes an adjustment frame 400, a swing assembly 500, a first handle assembly 600, and a second handle assembly 700.
[0051] The adjustment frame 400 is provided with multiple first limiting holes and second limiting holes. One end of the back cushion 300 is rotatably mounted on the adjustment frame 400, and the other end of the back cushion 300 rotates to move closer to or away from the seat cushion 200. One end of the swing component 500 is rotatably mounted on the mounting frame 100, and the other end is rotatably connected to the adjustment frame 400. The swing component 500 is used to drive the back cushion 300 closer to or away from the seat cushion 200. One end of the first handle component 600 extends toward the seat cushion 200, and the first handle component 600 can rotate based on its pivot point with the back cushion 300, so that its other end can be inserted into or pulled out of the first limiting hole, making it convenient for the user to sit on the seat cushion 200 and adjust the angle of the back cushion 300. One end of the second handle component 700 extends toward the seat cushion 200, and the second handle component 700 can rotate based on its pivot point with the swing component 500, so that its other end can be inserted into or pulled out of the second limiting hole, making it convenient for the user to sit on the seat cushion 200 and adjust the front and back position of the back cushion 300.
[0052] It should be noted that the trainer equipped with the backrest adjustment device includes a backrest 300, a mounting frame 100, and a seat cushion 200. The seat cushion 200 is fixed on the mounting frame 100 and is used to support the user and allow him to sit on the mounting frame 100. The backrest 300 is located on one side of the seat cushion 200 and provides support for the user's back when the user is sitting on the seat cushion 200 and exercising.
[0053] Reference Appendix Figures 1 to 3 In some embodiments, the backrest adjustment device includes an adjustment frame 400, which is provided with a plurality of first limiting holes and second limiting holes. One end of the backrest 300 is rotatably mounted on the adjustment frame 400, and the other end of the backrest 300 rotates to move closer to or away from the seat cushion 200.
[0054] Specifically, the adjustment frame 400 is located on one side of the mounting frame 100, and the adjustment frame 400 can move relative to the mounting frame 100. One end of the back pad 300 is rotatably mounted on the adjustment frame 400, so that the adjustment frame 400 can drive the back pad 300 to move relative to the mounting frame 100.
[0055] One end of the backrest 300 is rotatably mounted on the adjustment frame 400, and the other end of the backrest 300 rotates to move closer to or further away from the seat cushion 200. The rotation of the backrest 300 is used to change the angle between the backrest 300 and the seat cushion 200, and to provide different directions of reverse support based on the different angles, supporting users to use a variety of different postures for force training.
[0056] The adjustment frame 400 is provided with a plurality of first limiting holes and second limiting holes. The first limiting holes are used to cooperate with the first handle assembly 600 to control the relative rotation between the back cushion 300 and the adjustment frame 400, so that the included angle between the back cushion 300 and the seat cushion 200 is kept fixed or converted to an adjustable state.
[0057] The second limiting hole is used to cooperate with the second handle assembly 700 to control the relative rotation of the swing assembly 500 and the adjustment frame 400, so that the gap between the back cushion 300 and the seat cushion 200 remains fixed or is converted to an adjustable state.
[0058] Reference Appendix Figures 1 to 3 In some embodiments, the adjustment frame 400 includes a first positioning member 401, which is fixed on one end of the adjustment frame 400 near the back pad 300. The first positioning member 401 is provided with a plurality of first limiting holes, which are arranged around the rotational connection between the back pad 300 and the adjustment frame 400.
[0059] Specifically, the first positioning member 401 is a fan-shaped component, and the first positioning member 401 is fixed on the adjustment frame 400 around the rotation axis of the back pad 300 and the adjustment frame 400.
[0060] The first positioning element 401 is located on the adjustment frame 400 at one end near the back pad 300, so that the plane of rotation of the back pad 300 relative to the adjustment frame 400 is parallel to the maximum cross section of the first positioning element 401.
[0061] The first positioning member 401 has multiple first limiting holes through its largest cross section. When the first handle assembly 600 extends into the hole along the through direction of the first limiting hole, it will stop the rotation of the back pad 300 relative to the adjustment frame 400.
[0062] Multiple first limiting holes are arranged around the rotational connection between the back pad 300 and the adjustment frame 400, thereby cooperating with the first handle assembly 600 to allow the back pad 300 to stop at multiple different positions during rotation relative to the adjustment frame 400, realizing multi-level discrete adjustment of the angle of the back pad 300.
[0063] Reference Appendix Figures 1 to 3In some embodiments, the adjustment frame 400 includes a second positioning member 402, which is fixed on one end of the adjustment frame 400 away from the first positioning member 401. The second positioning member 402 is located on one side of the swing assembly 500, and a plurality of second limiting holes are provided on the second positioning member 402. The plurality of second limiting holes are arranged around the rotational connection between the swing assembly 500 and the adjustment frame 400.
[0064] Specifically, the second positioning member 402 is a fan-shaped component, and the second positioning member 402 is fixed on the adjustment frame 400 around the rotation axis of the swing assembly 500 and the adjustment frame 400.
[0065] The second positioning element 402 is located on the adjustment frame 400 at one end away from the first positioning element 401, so as to avoid interference between the angle adjustment of the back pad 300 and the distance adjustment of the back pad 300.
[0066] The second positioning member 402 is located on one side of the swing assembly 500. Multiple second limiting holes are provided on the largest cross section of the second positioning member 402. When the second handle assembly 700 extends into the hole along the through direction of the second limiting hole, it will stop the rotation of the swing assembly 500 relative to the adjustment frame 400.
[0067] Multiple second limiting holes are arranged around the rotational connection between the swing assembly 500 and the adjustment frame 400, thereby cooperating with the second handle assembly 700 to allow the swing assembly 500 to stop at multiple different positions during the rotation relative to the adjustment frame 400, realizing multi-level discrete adjustment of the distance between the back cushion 300 and the seat cushion 200.
[0068] Reference Appendix Figure 1 and Figure 3 In some embodiments, one end of the swing assembly 500 of the backrest adjustment device is rotatably mounted on the mounting frame 100, and the other end is rotatably connected to the adjustment frame 400. The swing assembly 500 is used to move the backrest 300 closer to or away from the seat cushion 200. The swing assembly 500 includes a first swing rod 501 and a second swing rod 502. One end of the first swing rod 501 is rotatably mounted on the mounting frame 100, and the other end is rotatably mounted on the adjustment frame 400. The second swing rod 502 is located on the side of the first swing rod 501 away from the seat cushion 200. One end of the second swing rod 502 is rotatably mounted on the mounting frame 100, and the other end is rotatably mounted on the adjustment frame 400. The first swing rod 501 and the second swing rod 502 cooperate to move the adjustment frame 400 so that the backrest 300 moves away from or closer to the seat cushion 200. The second handle assembly 700 passes through the first swing rod 501 or the second swing rod 502, thereby stopping or releasing the relative movement between the backrest 300 and the seat cushion 200.
[0069] Specifically, the swing assembly 500 includes two first swing rods 501, two second swing rods 502, and two stabilizer rods. One end of each of the two first swing rods 501 is rotatably mounted on the mounting frame 100, and the other end is rotatably mounted on the adjusting frame 400.
[0070] A stabilizing rod is fixed between the two first pendulum rods 501 to make the two first pendulum rods 501 relatively stable and swing synchronously.
[0071] Two second rocker arms 502 are located on the side of the two first rocker arms 501 away from the seat cushion 200. One end of each of the two second rocker arms 502 is rotatably mounted on the mounting bracket 100, and the other end is rotatably mounted on the adjustment bracket 400.
[0072] A stabilizing rod is fixed between the two second pendulum rods 502 to make the two second pendulum rods 502 relatively stable and swing synchronously.
[0073] The first swing arm 501, the second swing arm 502, the mounting bracket 100, and the adjusting bracket 400 together form a parallel four-bar linkage.
[0074] When the first rocker arm 501 and the second rocker arm 502 rotate relative to the mounting frame 100, the adjusting frame 400 drives the back cushion 300 away from or closer to the seat cushion 200. Based on the parallel four-bar linkage, the bottom surface of the adjusting frame 400 and the top surface of the mounting frame 100 remain parallel during the above movement, thereby keeping the angle between the back cushion 300 and the seat cushion 200 constant during the above movement.
[0075] The second handle assembly 700 is mounted on the first swing arm 501 or the second swing arm 502, thereby stopping or releasing the relative movement between the back cushion 300 and the seat cushion 200.
[0076] When the second handle assembly 700 passes through the first rocker arm 501 or the second rocker arm 502 and extends into the second limiting hole, the first rocker arm 501 and the second rocker arm 502 cannot rotate relative to the mounting bracket 100, the relative movement of the back cushion 300 and the seat cushion 200 stops, and the distance between the back cushion 300 and the seat cushion 200 is relatively fixed.
[0077] Reference Appendix Figures 1 to 3 In some embodiments, one end of the first handle assembly 600 of the backrest adjustment device extends toward the seat cushion 200, and the first handle assembly 600 can rotate based on its pivot point with respect to the backrest 300, so that its other end extends into or out of the first limiting hole, making it convenient for the user to sit on the seat cushion 200 and adjust the angle of the backrest 300.
[0078] The first handle assembly 600 includes a fixing member 603, a first pin 602, and a first adjusting handle 601. The fixing member 603 is fixed to the back cushion 300. The first pin 602 is used to pass through the fixing member 603 to extend into or withdraw from the first limiting hole. One end of the first adjusting handle 601 is hinged to the first pin 602, and the other end extends toward the seat cushion 200. The two ends of the first adjusting handle 601 are rotatably mounted on the fixing member 603. There is a first fixed pivot between the first adjusting handle 601 and the fixing member 603. By pushing or pulling the first adjusting handle 601 on the seat cushion 200 to rotate around the first fixed pivot, the first adjusting handle 601 drives the first pin 602 to extend into or withdraw from the first limiting hole, thereby stopping or releasing the relative rotation between the fixing member 603 and the adjusting frame 400.
[0079] Specifically, the fastener 603 is a plate-shaped component. The fastener 603 is fixed to the back of the back cushion 300, that is, the end of the back cushion 300 away from the seat cushion 200, and the maximum cross section of the fastener 603 is perpendicular to the back cushion 300. The maximum cross section of the fastener 603 is used to provide an installation reference.
[0080] One end of the first pin 602 is used to pass through the fixing member 603 and extend into or out of the first limiting hole, and the other end is hinged to the first adjusting handle 601.
[0081] When the first pin 602 passes through the maximum cross section of the fixing member 603 and extends into the first limiting hole, the relative position of the first positioning member 401 and the fixing member 603 is fixed, thereby preventing the back pad 300 from continuing to rotate relative to the adjusting frame 400.
[0082] One end of the first adjustment handle 601 extends toward the seat cushion 200, making it convenient for the user to sit on the seat cushion 200 and directly grasp it to adjust the backrest angle 300; the other end of the first adjustment handle 601 is hinged to the first pin 602, and the first fixed pivot between the two ends is located on the largest cross section of the fixing member 603.
[0083] By pushing or pulling the first adjustment handle 601 close to one end of the seat cushion 200 to make it rotate along the first fixed pivot, the other end drives the first pin 602 to extend into or withdraw from the first limiting hole, thereby stopping or releasing the relative rotation between the back cushion 300 and the adjustment frame 400.
[0084] Reference Appendix Figures 1 to 3 In some embodiments, one end of the second handle assembly 700 extends toward the seat cushion 200, and the second handle assembly 700 can rotate based on its pivot point with the swing assembly 500, so that its other end extends into or out of the second limiting hole, making it convenient for the user to sit on the seat cushion 200 and adjust the backrest 300 for the fore-and-aft position.
[0085] The second handle assembly 700 includes a second pin 702 and a second adjusting handle 701. The second pin 702 is used to pass through the swing assembly 500 to extend into or withdraw from the second limiting hole. One end of the second adjusting handle 701 is hinged to the second pin 702, and the other end extends toward the seat cushion 200. The two ends of the second adjusting handle 701 are rotatably mounted on the swing assembly 500. There is a second fixed pivot between the second adjusting handle 701 and the swing assembly 500. By pushing or pulling the second adjusting handle 701 on the seat cushion 200 to rotate around the second fixed pivot, the second adjusting handle 701 drives the second pin 702 to extend into or withdraw from the second limiting hole, thereby stopping or releasing the relative rotation between the swing assembly 500 and the adjusting frame 400.
[0086] One end of the second pin 702 is used to pass through the first rocker arm 501 or the second rocker arm 502 and extend into or out of the second limiting hole, while the other end is hinged to the second adjusting handle 701.
[0087] When the second pin 702 passes through the first rocker arm 501 or the second rocker arm 502 and extends into the second limiting hole, the relative position of the second positioning member 402 with the first rocker arm 501 or the second rocker arm 502 is fixed, thereby preventing the first rocker arm 501 or the second rocker arm 502 from continuing to rotate relative to the adjusting frame 400.
[0088] One end of the second adjustment handle 701 extends toward the seat cushion 200, making it convenient for the user to sit on the seat cushion 200 and directly grasp it to adjust the front and back position of the back cushion 300; the other end of the second adjustment handle 701 is hinged to the second pin 702, and the two ends are rotatably mounted on the first rocker arm 501 or the second rocker arm 502.
[0089] By pushing or pulling one end of the second adjustment handle 701 close to the seat cushion 200, the whole rotates relative to the first rocker arm 501 or the second rocker arm 502, thereby causing the other end to drive the second pin 702 to extend into or withdraw from the second limiting hole, thereby stopping or releasing the relative rotation between the first rocker arm 501 or the second rocker arm 502 and the adjustment frame 400.
[0090] Reference Appendix Figure 1 and Figure 2 In some embodiments, the back pad adjustment device further includes a bracket 800, which is fixed on the fixing member 603 and the swing assembly 500 respectively, and is used to install the first fixed rotating shaft and the second fixed rotating shaft respectively.
[0091] Specifically, one of the support members 800 is located between the first adjusting handle 601 and the fixing member 603. One end of the support member 800 is fixed on the largest cross section of the fixing member 603 away from the first limiting hole, and the other end extends away from the fixing member 603 and is rotatably connected to the first adjusting handle 601.
[0092] Another support member 800 is located between the second adjusting handle 701 and the first rocker arm 501 or the second rocker arm 502. One end of the support member 800 is fixed to the side wall of the first rocker arm 501 or the second rocker arm 502 away from the second limiting hole, and the other end extends in a direction away from the first rocker arm 501 or the second rocker arm 502 and is rotatably connected to the second adjusting handle 701.
[0093] Reference Appendix Figure 1 and Figure 2 In some embodiments, the back pad adjustment device further includes a guide sleeve 900, which is hollow inside and open at both ends. Two guide sleeves 900 are respectively inserted into the fixing member 603 and the swing assembly 500. The two ends of the guide sleeve 900 extend away from the fixing member 603 or the swing assembly 500. The guide sleeve 900 is used to guide the first pin 602 through the fixing member 603 or to guide the second pin 702 through the swing assembly 500.
[0094] Specifically, the guide sleeve 900 is hollow inside and open at both ends, and the inner diameter of the guide sleeve 900 is not less than the outer diameter of the first pin 602 and the second pin 702.
[0095] One of the guide sleeves 900 is inserted through the fixing member 603, with both ends extending away from the fixing member 603.
[0096] The guide sleeve 900 provided on the fixing member 603 is used to guide the first pin 602 through the fixing member 603 so that it can smoothly extend into the first limiting hole and avoid the adjustment jamming caused by the unstable extension position.
[0097] Another guide sleeve 900 is inserted through the first swing rod 501 or the second swing rod 502, with both ends extending away from the first swing rod 501 or the second swing rod 502.
[0098] The guide sleeve 900 provided on the first rocker arm 501 or the second rocker arm 502 is used to guide the second pin 702 through the first rocker arm 501 or the second rocker arm 502 so that it can smoothly extend into the second limiting hole and avoid the adjustment jamming caused by the unstable extension position.
[0099] In some embodiments, the guide sleeve 900 is further provided with an elastic element, which is used to normally drive the first pin 602 or the second pin 702 to extend into the first limiting hole or the second limiting hole respectively.
[0100] Specifically, the elastic element includes, but is not limited to, springs, tension springs, and sheet springs. The elastic element is installed in the guide sleeve 900 and is used to normally drive the first pin 602 into the first limiting hole, or normally drive the second pin 702 into the second limiting hole, thus saving adjustment steps.
[0101] Reference Appendix Figures 1 to 3In some embodiments, the backrest adjustment device further includes a drive assembly 1000, one end of which is rotatably mounted on the mounting bracket 100 and the other end of which is rotatably mounted on the backrest 300. The drive assembly 1000 is used to normally drive the backrest 300 to move toward the seat cushion 200.
[0102] Specifically, the two ends of the drive assembly 1000 are rotatably connected to the mounting bracket 100 and the back pad 300, respectively; the drive assembly 1000 includes, but is not limited to, cylinders, gas springs and hydraulic cylinders.
[0103] When the user pulls the first pin 602 out of the first limiting hole by using the first adjustment handle 601, the relative rotation between the back cushion 300 and the adjustment frame 400 is released. The drive assembly 1000 is used to drive the back cushion 300 to rotate towards the seat cushion 200 in normal operation. The user applies pressure to the back cushion 300 with their back to resist the driving force of the drive assembly 1000 until the angle of the back cushion 300 is appropriate. Then, the user drives the first pin 602 into the first limiting hole again by using the first adjustment handle 601, which fixes the relative rotation angle between the back cushion 300 and the adjustment frame 400.
[0104] When the user pulls the second pin 702 out of the second limiting hole by using the second adjustment handle 701, the relative rotation between the swing component 500 and the adjustment frame 400 is released. The drive component 1000 is used to drive the back cushion 300 to move closer to the seat cushion 200 in normal operation. The user applies pressure to the back cushion 300 with their back to resist the driving force of the drive component 1000 until the distance between the back cushion 300 and the seat cushion 200 is appropriate. Then, the user can use the second adjustment handle 701 to drive the second pin 702 into the second limiting hole again to fix the distance between the back cushion 300 and the seat cushion 200.
[0105] The drive assembly 1000 is used to normally drive the back cushion 300 to move closer to the seat cushion 200, thereby avoiding the user having to manually adjust the position of the back cushion 300.
[0106] Preferably, when the drive assembly 1000 is a gas spring, the gas spring includes a support member and a telescopic sleeve. The support member is rotatably disposed at the end of the back cushion 300 away from the seat cushion 200, and the telescopic sleeve is rotatably disposed on the mounting bracket 100. The telescopic sleeve is hollow inside and has an opening at the end away from the mounting bracket 100. The telescopic sleeve is sleeved outside the support member through the opening so that the end of the support member away from the back cushion 300 is slidably disposed inside the telescopic sleeve.
[0107] The space between the support and the telescopic sleeve is filled with gas, including but not limited to air and nitrogen.
[0108] When the back cushion 300 moves away from the seat cushion 200, the gas between the support and the telescopic sleeve is compressed; when the relative rotation between the back cushion 300 and the adjustment frame 400 is released, or when the relative rotation between the swing assembly 500 and the adjustment frame 400 is released, the compressed gas releases pressure to drive the back cushion 300 to move closer to the seat cushion 200.
[0109] When the backrest adjustment device of this application is used to adjust the rotation angle of the backrest 300, the user sits on the seat cushion 200 and pushes or pulls the first adjustment handle 601 on one side of the seat cushion 200 to rotate, thereby driving the first pin 602 to be pulled out of the first limiting hole. At this time, the relative rotation between the backrest 300 and the adjustment frame 400 is released, and the drive component 1000 drives the backrest 300 to rotate towards the seat cushion 200. The user applies pressure to the backrest 300 through his back to resist the driving force of the drive component 1000 until the angle of the backrest 300 is appropriate. Then, the user drives the first pin 602 to be inserted into the first limiting hole through the first adjustment handle 601. At this time, the relative rotation angle between the backrest 300 and the adjustment frame 400 is fixed.
[0110] When the backrest adjustment device of this application is used to adjust the distance between the backrest 300 and the seat cushion 200, the user sits on the seat cushion 200 and pushes or pulls the second adjustment handle 701 on one side of the seat cushion 200 to rotate, thereby driving the second pin 702 to be pulled out of the second limiting hole. At this time, the relative rotation between the swing component 500 and the adjustment frame 400 is released, and the drive component 1000 drives the backrest 300 to move closer to the seat cushion 200. The user applies pressure to the backrest 300 through his back to resist the driving force of the drive component 1000 until the distance between the backrest 300 and the seat cushion 200 is appropriate. Then, the user drives the second pin 702 to be inserted into the second limiting hole through the second adjustment handle 701. At this time, the distance between the backrest 300 and the seat cushion 200 is fixed. Specific Implementation Example 2
[0112] This application also provides a trainer, which is equipped with the back pad adjustment device in the first specific embodiment described above, for adjusting the back pad 300.
[0113] This application provides a backrest adjustment device and a training device equipped with it. By setting the adjustment ends of the first handle assembly 600 and the second handle assembly 700 to extend to the seat cushion 200, it is convenient for the user to sit on the seat cushion 200 and adjust the angle of the backrest 300 and the distance between the seat cushion 200 and the backrest 300, reducing adjustment steps, adapting to different training postures of different users, and improving the user experience. The first adjustment handle 601 converts the user's manual operation on one side of the seat cushion 200 into the linear movement of the first latch 602, thereby fixing or releasing the rotation angle of the backrest 300. The second adjustment handle 701 converts the user's manual operation on one side of the seat cushion 200 into the linear movement of the second latch 702, thereby locking the relative movement between the backrest 300 and the mounting bracket 100. Alternatively, it can be released; the bracket 800 provides a pivot mounting position for the first adjustment handle 601 or the second adjustment handle 701; the guide sleeve 900 precisely guides the first pin 602 or the second pin 702 to be inserted into the corresponding first limit hole or second limit hole; by setting the first positioning member 401 and the second positioning member 402 respectively to expand the setting position of the first limit hole and the second limit hole, multi-level discrete adjustment can be achieved; by the cooperation of the first swing rod 501 and the second swing rod 502 to form a parallel four-bar linkage mechanism, the back cushion 300 is guided to stably move away from or closer to the seat cushion 200; by setting the drive component 1000, the back cushion 300 is automatically moved towards the seat cushion 200, so as to facilitate the user to adjust the angle of the back cushion 300 or the distance between the back cushion 300 and the seat cushion 200.
[0114] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0115] The above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.
Claims
1. A backrest adjustment device for adjusting the backrest of a training device, the training device further comprising a mounting frame and a seat cushion, the seat cushion being fixed to the mounting frame and located on one side of the backrest, characterized in that, The back pad adjustment device includes: An adjustment frame is provided with a plurality of first limiting holes and second limiting holes. One end of the back pad is rotatably mounted on the adjustment frame, and the other end of the back pad rotates to move closer to or away from the seat cushion. The swing assembly has one end rotatably mounted on the mounting frame and the other end rotatably connected to the adjustment frame. The swing assembly is used to move the back cushion closer to or away from the seat cushion. The first handle assembly extends at one end toward the seat cushion, and the first handle assembly can rotate based on its pivot point with the back cushion, so that its other end can be inserted into or withdrawn from the first limiting hole, making it convenient for the user to sit on the seat cushion and adjust the angle of the back cushion. The second handle assembly extends at one end toward the seat cushion, and the second handle assembly can rotate based on its pivot point with the swing assembly, so that its other end can be inserted into or withdrawn from the second limiting hole, making it convenient for the user to sit on the seat cushion and adjust the backrest position.
2. The back pad adjustment device according to claim 1, characterized in that, The first handle component includes: A fastener is fixed to the back of the back pad; A first pin is used to pass through the fastener to extend into or withdraw from the first limiting hole; The first adjustment handle has one end hinged to the first pin and the other end extending toward the seat cushion. The two ends of the first adjustment handle are rotatably mounted on the fixing member. By pushing or pulling the first adjustment handle on the seat cushion to rotate relative to the fixing member, the first adjustment handle causes the first pin to extend into or withdraw from the first limiting hole, thereby stopping or releasing the relative rotation between the fixing member and the adjustment frame.
3. The back pad adjustment device according to claim 2, characterized in that, The second handle assembly includes: A second pin is used to pass through the swing assembly to extend into or withdraw from the second limiting hole; The second adjustment handle has one end hinged to the second pin and the other end extending toward the seat cushion. The two ends of the second adjustment handle are rotatably mounted on the swing assembly. By pushing or pulling the second adjustment handle on the seat cushion to rotate relative to the swing assembly, the second adjustment handle causes the second pin to extend into or withdraw from the second limiting hole, thereby stopping or releasing the relative rotation of the swing assembly and the adjustment frame.
4. The back pad adjustment device according to claim 3, characterized in that, Also includes: The bracket component has one end fixed to the fixing component and the swing assembly, and the other end rotatably connected to the first adjustment handle and the second adjustment handle.
5. The back pad adjustment device according to claim 4, characterized in that, Also includes: A guide sleeve, which is hollow inside and open at both ends, is respectively inserted into the fixing member and the swing assembly, and the two ends of the guide sleeve extend away from the fixing member or the swing assembly. The guide sleeve is used to guide the first pin through the fixing member, or to guide the second pin through the swing assembly.
6. The back pad adjustment device according to claim 1, characterized in that, The adjustment frame includes: A first positioning component is fixed on one end of the adjustment frame near the back pad. The first positioning component is provided with a plurality of first limiting holes, which are arranged around the rotatable connection between the back pad and the adjustment frame.
7. The back pad adjustment device according to claim 6, characterized in that, The adjustment frame also includes: The second positioning member is fixed on the adjustment frame at one end away from the first positioning member. The second positioning member is located on one side of the swing assembly. The second positioning member is provided with a plurality of second limiting holes, which are arranged around the rotational connection between the swing assembly and the adjustment frame.
8. The back pad adjustment device according to claim 1, characterized in that, The swing component includes: The first swing arm has one end rotatably mounted on the mounting frame and the other end rotatably mounted on the adjusting frame; The second swing arm is located on the side of the first swing arm away from the seat cushion. One end of the second swing arm is rotatably mounted on the mounting frame, and the other end is rotatably mounted on the adjustment frame. The first and second swing arms cooperate to drive the adjustment frame to move the back cushion away from or closer to the seat cushion. The second handle assembly is inserted through the first or second swing arm, thereby stopping or releasing the relative movement between the back cushion and the seat cushion.
9. The back pad adjustment device according to any one of claims 1 to 8, characterized in that, Also includes: The drive assembly has one end rotatably mounted on the mounting bracket and the other end rotatably mounted on the back cushion. The drive assembly is used to normally drive the back cushion to move towards the seat cushion.
10. A training device, characterized in that, The trainer is equipped with a back pad adjustment device as described in any one of claims 1 to 9, for adjusting the back pad.