Sitting and lying adjustable leg stretching and bending trainer

Abstract

The utility model relates to the technical field of leg stretching and bending training devices, in particular to a sitting and lying adjustable leg stretching and bending training device which comprises a fixing piece arranged on a connecting rod of a sitting and lying adjustable leg stretching and bending training device body in a sleeved mode, an elastic sleeve connected to a fixing piece is arranged outside the fixing piece in a sleeved mode, and a movable cylinder is arranged on the elastic sleeve in a penetrating mode. A fixing strip is arranged at one end of each movable cylinder, positioning rods connected to the fixing pieces are arranged on the fixing strips in a penetrating mode, locking pieces matched with the positioning rods and used for locking the positions of the movable cylinders are symmetrically and elastically connected to the fixing strips, the ends, close to the fixing pieces, of the movable cylinders penetrate into the fixing pieces, and the multiple positioning pieces are elastically connected into the fixing pieces. And a positioning hole matched with the positioning piece is formed in the movable cylinder. Therefore, the diameter of the leg support can be quickly adjusted, the leg support is convenient for a user with a smaller body shape to use, the training effect is ensured, and the leg support is convenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of leg extension and flexion training devices, and in particular to a seated and lying adjustable leg extension and flexion training device. Background Technology

[0002] The leg extension and flexion trainer is a device specifically designed for training thigh muscles. It can effectively strengthen and stimulate the leg muscle groups, mainly for exercising the quadriceps on the front of the thigh and the hamstrings on the back of the thigh. Through the seated or supine design, it can achieve the extension and flexion movements of the thigh, thereby enhancing leg strength and muscle size. When using the adjustable seated leg extension and flexion trainer for seated leg extension and flexion training, the user usually needs to sit upright on the seat of the trainer, with the upper body leaning against the back of the machine, and the front of the ankles (between the instep and the calf) resting against the back of the machine's leg supports, with both legs naturally bent with the machine.

[0003] Currently, the diameter of the leg rests in existing adjustable seated and reclining leg extension and flexion trainers is usually fixed. However, this is not suitable for some smaller users. When smaller users need to hook the leg rests between their insteps and calves for training, the larger diameter of the leg rests makes it difficult for them to control. With prolonged use, users will inevitably experience operational deformities, which will not only affect the training effect but may also cause muscle strain.

[0004] How to quickly adjust the diameter of the leg rest to make it easier for smaller users, ensure training effectiveness, and save adjustment time has become a technical problem that needs to be solved.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this invention is to provide a seated / lying adjustable leg extension and flexion trainer that allows for quick adjustment of the leg support diameter, making it convenient for smaller users, ensuring training effectiveness, and facilitating adjustment.

[0007] To achieve the above objectives, this utility model provides a seated and reclining adjustable leg extension and flexion trainer, including a fixing member sleeved on the connecting rod of the seated and reclining adjustable leg extension and flexion trainer body, and an elastic sleeve sleeved on the outside of the fixing member.

[0008] The elastic sleeve is provided with a movable cylinder, one end of which is provided with a fixing strip. A positioning rod connected to the fixing member is provided on the fixing strip. A locking member for locking the position of the movable cylinder is symmetrically and elastically connected to the fixing strip and cooperates with the positioning rod.

[0009] According to the present invention, the adjustable leg extension and flexion trainer for sitting and lying down has one end of the movable cylinder that is close to the fixed plate inserted into the fixed plate. The fixed plate is elastically connected with several positioning members, and the movable cylinder is provided with positioning holes that cooperate with the positioning members.

[0010] According to the present invention, an adjustable leg extension and flexion trainer for sitting and lying down has several reinforcing strips between the fixed strip and the movable cylinder.

[0011] According to the present invention, the adjustable leg extension and flexion trainer for sitting and lying down has one end of the locking member that is close to the fixing bar inserted into the fixing bar. The locking member inside the fixing bar is symmetrically provided with a plug. The fixing bar is provided with a slot that cooperates with the plug. The plug is slidably disposed in the slot. An elastic member is provided between the plug and the slot.

[0012] According to the present invention, the adjustable leg extension and flexion trainer for sitting and lying down uses a spring as the elastic element.

[0013] According to the present invention, the adjustable leg extension and flexion trainer for sitting and lying down includes a fixing plate and a support cylinder. The fixing plate is connected to the outside of the connecting rod, and one end of the elastic sleeve is connected to the fixing plate.

[0014] According to the present invention, in the adjustable sitting and lying leg extension and flexion trainer, the end of the fixing plate away from the main body of the adjustable sitting and lying leg extension and flexion trainer is connected to the support cylinder, the support cylinder is sleeved on the outside of the connecting rod, the end of the positioning rod near the support cylinder is connected to the support cylinder, and the elastic sleeve is sleeved on the outside of the support cylinder.

[0015] The purpose of this invention is to provide a seated / lying adjustable leg extension / flexion trainer, including a movable cylinder. By disengaging the locking element from the locking hole and pulling the fixing bar, the movable cylinder is pulled out of the elastic sleeve, forming a cavity inside. When the user applies pressure, the elastic sleeve deforms, thereby reducing the local diameter of the leg rest, making it easier for smaller users to use and ensuring training effectiveness. Only the locking element and movable cylinder need to be controlled to quickly adjust the diameter of the leg rest without disassembling the elastic sleeve or bolt structure, facilitating adjustment and saving adjustment time. In summary, the beneficial effects of this invention are: it allows for quick adjustment of the leg rest diameter, making it easier for smaller users to use, ensuring training effectiveness, and facilitating adjustment. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is a structural diagram of the positioning component;

[0018] Figure 3 This is a cross-sectional view of the leg rest area;

[0019] In the diagram: 1-Adjustable leg extension and flexion trainer body (sitting and lying position), 11-Leg support, 111-Fixing plate, 112-Support cylinder, 113-Elastic sleeve, 114-Positioning rod, 115-Positioning component, 12-Connecting rod, 3-Moving cylinder, 31-Fixing strip, 32-Reinforcing strip, 4-Locking component, 5-Elastic component. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", 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 utility model 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 utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] See Figures 1-3This utility model provides a seated / lying adjustable leg extension / flexion trainer, including a seated / lying adjustable leg extension / flexion trainer body 1 (the structure of the seated / lying adjustable leg extension / flexion trainer body 1 is the same as the prior art, which is a mature prior art in the field, and its specific structure and working principle will not be described in detail here). The seated / lying adjustable leg extension / flexion trainer body 1 is provided with a connecting rod 12 that can rotate around a point. A leg support 11 is sleeved on the connecting rod 12. The leg support 11 includes a fixing member, which includes a fixing plate 111 and a support cylinder 112. The fixing plate 111 is connected to the outside of the connecting rod 12. The end of the fixing plate 111 away from the seated / lying adjustable leg extension / flexion trainer body 1 is connected to the support cylinder 112. The support cylinder 112 is sleeved on the outside of the connecting rod 12. An elastic sleeve 113 is sleeved on the outside of the support cylinder 112. The elastic sleeve 113 has a certain deformation capacity (which is a mature prior art in the field, and its specific structure and working principle will not be described in detail here). One end of the elastic sleeve 113 near the fixed piece 111 is connected to the fixed piece 111. A movable cylinder 3 is inserted inside the elastic sleeve 113. The end of the movable cylinder 3 away from the fixed piece 111 extends out of the elastic sleeve 113. A fixed strip 31 is provided at the end of the movable cylinder 3 away from the fixed piece 111. A positioning rod 114 is inserted on the fixed strip 31. The end of the positioning rod 114 near the support cylinder 112 is connected to the support cylinder 112. Locking members 4 are symmetrically elastically connected to the fixed strip 31 (the ends of the locking members 4 near the fixed strip 31 are inserted into the fixed strip 31. Each locking member 4 in the fixed strip 31 is symmetrically provided with a plug. The fixed strip 31 is provided with a slot that cooperates with the plug. The plug is slidably set in the slot. An elastic member 5 is provided between the plug and the slot). The fixed strip 31 is provided with a groove that allows the locking member 4 to slide. The positioning rod 114 is provided with a locking hole that cooperates with the locking member 4. When the locking member 4 and the locking hole cooperate with each other, the position of the movable cylinder 3 can be locked.

[0024] See Figures 1-3 Preferably, the end of the movable cylinder 3 near the fixed plate 111 is inserted into the interior of the fixed plate 111. Several positioning elements 115 are elastically connected inside the fixed plate 111 (the connection method between the positioning elements 115 and the fixed plate 111 is the same as the connection method between the locking element 4 and the fixing strip 31, and its specific structure and working principle will not be described in detail here). The movable cylinder 3 is provided with positioning holes that cooperate with the positioning elements 115. When the positioning elements 115 and the positioning holes cooperate with each other, the stability of the movable cylinder 3 installation can be further improved.

[0025] See Figures 1-3 Preferably, a number of reinforcing strips 32 are provided between the fixed strip 31 and the movable cylinder 3 to enhance the strength of the movable cylinder 3.

[0026] See Figures 1-3 Preferably, the elastic element 5 is a spring, which provides the return force.

[0027] See Figures 1-3 When a smaller user uses the device, slide the locking piece 4 away from the positioning rod 114 to disengage the locking piece 4 from the locking hole, pull the fixing bar 31 to remove the movable cylinder 3 from the elastic sleeve 113, and place the removed movable cylinder 3 on an open ground to begin training. (Because the elastic sleeve 113 has a certain deformation capacity, when the movable cylinder 3 is removed, a cavity is formed inside the elastic sleeve 113. When the user applies pressure to it, the elastic sleeve 113 will deform to a certain extent, thereby reducing the local diameter of the leg support 11.) When a user of normal size uses the device, first slide the locking piece 4 away from the positioning rod 114 to insert the movable cylinder 3 into the elastic sleeve 113, and finally make the positioning piece 115 engage with the positioning hole to begin training.

[0028] This utility model provides a seated / lie-adjustable leg extension / flexion trainer, including a movable cylinder. By disengaging the locking element from the locking hole and pulling the fixing bar, the movable cylinder is pulled out of the elastic sleeve, forming a cavity inside. When the user applies pressure, the elastic sleeve deforms, thus reducing the local diameter of the leg rest, making it easier for smaller users to use and ensuring training effectiveness. Only the locking element and movable cylinder need to be controlled to quickly adjust the diameter of the leg rest without disassembling the elastic sleeve or bolt structure, facilitating adjustment and saving adjustment time. In summary, the beneficial effects of this utility model are: it allows for quick adjustment of the leg rest diameter, making it convenient for smaller users, ensuring training effectiveness, and facilitating adjustment.

[0029] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A sit-to-stand adjustable flexion leg exerciser, characterized by, The fixing piece is sleeved on the connecting rod of the body of the sitting and lying adjustable stretching and bending leg trainer, and the outer part of the fixing piece is sleeved with an elastic sleeve; An activity cylinder is arranged on the elastic sleeve, one end of the activity cylinder is provided with a fixing strip, the fixing strip is provided with a positioning rod connected with the fixing piece, and the fixing strip is symmetrically and elastically connected with a locking piece used for locking the position of the activity cylinder.

2. The seated and recumbent adjustable extension-flexion leg trainer according to claim 1, characterized in that, The end of the activity cylinder close to the fixing piece is inserted into the inside of the fixing piece, the inside of the fixing piece is elastically connected with a plurality of positioning pieces, and the activity cylinder is provided with a positioning hole matched with the positioning pieces.

3. The seated and recumbent adjustable extension / flexion leg trainer as claimed in claim 1, characterized in that, A plurality of reinforcing strips are arranged between the fixing strip and the activity cylinder.

4. The seated and recumbent adjustable extension / flexion leg trainer as claimed in claim 1, characterized in that, The end of the locking piece close to the fixing strip is inserted into the fixing strip, the locking piece in the fixing strip is symmetrically provided with an insertion block, the fixing strip is provided with an insertion slot matched with the insertion block, the insertion block is slidably arranged in the insertion slot, and an elastic piece is arranged between the insertion block and the insertion slot.

5. The seated and recumbent adjustable extension / flexion leg trainer according to claim 4, characterized in that, The elastic piece is a spring.

6. The seated and recumbent adjustable extension / flexion leg trainer as claimed in claim 1, characterized in that, The fixing piece comprises a fixing sheet and a supporting cylinder, the fixing sheet is connected with the outer part of the connecting rod, and one end of the elastic sleeve is connected with the fixing sheet.

7. The seated and recumbent adjustable extension / flexion leg trainer according to claim 6, characterized in that, The end of the fixing sheet away from the body of the sitting and lying adjustable stretching and bending leg trainer is connected with the supporting cylinder, the supporting cylinder is sleeved on the outer part of the connecting rod, the end of the positioning rod close to the supporting cylinder is connected with the supporting cylinder, and the elastic sleeve is sleeved on the outer part of the supporting cylinder.

Images