A lower limb stretching training device

Abstract

The present invention provides a lower limb stretching trainer, which includes a mainframe body, a training arm, a driving mechanism, a quick-release assembly and a footrest assembly, wherein the driving mechanism includes a driving device, a lead screw and a moving part, wherein the output end of the driving device is connected to the lead screw drive, the moving part is threadedly connected to the lead screw, and the moving part is connected to the footrest assembly, and is used to drive the footrest assembly to reciprocate along the length direction of the lead screw when the lead screw rotates forward or reversely; the quick-release assembly includes a receiving shell, an embedded part and a locking assembly, wherein the receiving shell is connected to the moving part, the embedded part is connected to the footrest assembly, and the locking assembly includes a locking member, which is connected to the receiving shell, and when the embedded part is placed in the receiving shell, the locking member can be inserted into the embedded part, and the receiving shell and the embedded part are connected, and the locking member is pulled, so that the locking member can be separated from the embedded part. When the user does not apply a driving force, the footrest assembly can also drive the lower limbs to move, and the footrest assembly can be quickly replaced, and the lower limb stretching trainer has a variety of training modes.

Description

Technical Field

[0001] The invention relates to the technical field of training equipment, in particular to a lower limb stretching trainer. Background Art

[0002] Limb stretching trainers include upper limb stretching trainers, lower limb stretching trainers, etc. Among them, lower limb stretching trainers can be used for lower limb stretching training, which has a relaxing and rehabilitation effect on lower limb joints and muscle groups.

[0003] The limb stretching trainer in the prior art usually includes a training arm and a footrest assembly. The footrest assembly is located on the training arm. When the trainee uses it, the foot is placed on the footrest assembly and the footrest assembly is driven to move on the training arm through active movement, thereby performing stretching training.

[0004] The applicant has found that the prior art has at least the following technical problems: On the one hand, the limb stretching trainer in the prior art has a simple structure and a single training mode. When the trainer does not apply force, the footrest assembly cannot drive the trainer's feet to move, and the user cannot perform passive exercise. On the other hand, the footrest assembly is fixed to the trainer body and cannot be disassembled. The disassembly of the detachable footrest assembly is time-consuming and laborious, and the disassembly and assembly is very inconvenient. Summary of the invention

[0005] The purpose of the present invention is to provide a lower limb stretching trainer to solve the technical problems in the prior art that the footrest assembly cannot drive the trainee's feet to move, perform passive training, and the footrest assembly is difficult to replace. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The lower limb stretching trainer provided by the present invention comprises a main body, a training arm, a driving mechanism, a quick-release assembly and a footrest assembly, wherein:

[0008] The training arm is fixedly connected or rotationally connected to the host body, the driving mechanism includes a driving device, a lead screw and a moving part, the driving device and the lead screw are located in the housing of the training arm, the output end of the driving device is connected to the lead screw for driving the lead screw to rotate forward or reversely, the moving part is threadedly connected to the lead screw, and the moving part is connected to the foot support assembly for driving the foot support assembly to reciprocate along the length direction of the lead screw when the lead screw rotates forward or reversely;

[0009] The quick-release assembly includes a receiving shell, an embedded part and a locking assembly, wherein: the receiving shell is connected to the movable part, the embedded part is connected to the foot support assembly, and the locking assembly includes a locking member, which is connected to the receiving shell. When the embedded part is placed in the receiving shell, the locking member can be inserted into the embedded part and connect the receiving shell and the embedded part. By pulling the locking member, the locking member can be disengaged from the embedded part, thereby removing the embedded part from the receiving shell.

[0010] Preferably, the driving mechanism further comprises a guide rod, the guide rod is located in the housing of the trainer, the guide rod is arranged parallel to the lead screw, and the moving part is slidably connected to the guide rod.

[0011] Preferably, the driving device and the lead screw are located in the outer shell, a slot is provided on the outer shell, the movable part is located in the slot, or the movable part passes through the slot to be connected to the footrest assembly, and the movable part is movably arranged along the slot.

[0012] Preferably, the driving mechanism also includes a telescopic part, wherein a fixed end of one of the telescopic parts is fixed to one end inside the shell, and a movable end of the telescopic part is fixedly connected to one side of the movable part; a fixed end of another telescopic part is fixed to the other end inside the shell, and a movable end of the telescopic part is fixedly connected to the other side of the movable part; the telescopic part covers the slot and can stretch or shrink with the movement of the movable part.

[0013] Preferably, the telescopic portion is in a pleated shape.

[0014] Preferably, the receiving shell is a shell structure with an open top, the embedded part is a hollow cavity, the receiving shell is provided with a first through hole for the locking member to pass through, the embedded part is provided with a second through hole for the locking member to pass through, and when the embedded part is inserted into place on the receiving shell, the first through hole is connected to the second through hole;

[0015] A positioning block is provided on the inner wall of the receiving shell, and when the embedded portion is inserted into the receiving shell until the lower end of the embedded portion abuts against the positioning block, the first through hole is communicated with the second through hole.

[0016] Preferably, the locking member includes an insertion rod, and the locking assembly also includes an outer cover and an elastic reset portion, wherein:

[0017] A stop block is provided at one end of the insertion rod facing away from the receiving shell, the elastic reset portion is sleeved on the outside of the insertion rod, one end of the elastic reset portion is fixed to the outer wall of the receiving shell, and the other end abuts against the stop block, and the outer cover is provided outside the elastic reset portion; the insertion rod can be separated from the embedded portion under the pulling of external force and the elastic reset portion can be stretched, and the elastic reset portion can drive the insertion rod to be reinserted into the other embedded portion when the external force is removed.

[0018] Preferably, the footrest assembly comprises a support plate and a shield plate, wherein:

[0019] The support plate is fixedly connected to the shield plate, and the shield plate is an arc-shaped plate structure. When the support plate supports the sole of the foot, the shield plate surrounds at least the ankle.

[0020] Preferably, two groups of the embedded parts are provided, wherein one group of the embedded parts is connected to the supporting plate, and the other group of the embedded parts is connected to the shield plate.

[0021] Preferably, the lower limb stretching trainer further comprises a swing mechanism, the swing mechanism comprising a sphere, a connecting rod and a spherical groove, wherein:

[0022] The connecting rod connects the ball and the footrest assembly, the spherical groove is located on the embedded part, the ball extends into the spherical groove, and the ball can swing in the spherical groove under the action of external force, thereby driving the footrest assembly to swing compared to the embedded part.

[0023] Compared with the prior art, the lower limb stretching trainer provided by the present invention has the following beneficial effects: when the driving device drives the lead screw to rotate forward or reverse, the moving part reciprocates along the length direction of the lead screw, and the foot rest assembly is connected to the moving part. Therefore, the foot rest assembly can reciprocate along the length direction of the lead screw. When the user places the foot on the foot rest assembly and the user does not apply a driving force, the foot rest assembly can also drive the lower limbs to move, thereby improving the stretching and rehabilitation effects on the lower limbs. When the locking piece is inserted into the embedded part, the footrest assembly is connected to the receiving shell and can move under the drive of the driving mechanism. The user places the foot on the footrest assembly to perform stretching training on the lower limbs. When it is necessary to replace the footrest assembly with a different structure, the user pulls the locking piece, and the locking piece is disengaged from the embedded part, thereby the embedded part and the receiving shell can be disassembled, that is, the footrest assembly is removed from the trainer body and replaced with a new footrest assembly, or the position of the footrest assembly is changed, the embedded part on the new footrest assembly is reinserted into the receiving shell, and the locking piece is inserted back. The footrest assembly can be quickly replaced, so that the lower limb stretching trainer has a variety of training modes and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of a lower limb stretching trainer;

[0026] Figure 2 It is a structural schematic diagram of the driving mechanism;

[0027] Figure 3 It is a schematic diagram of the matching structure of the quick release assembly and the footrest assembly;

[0028] Figure 4 It is a schematic diagram of the structure of the quick-release assembly;

[0029] Figure 5 is a top view of the quick release assembly;

[0030] Figure 6 yes Figure 5 Cross-section view at AA in the middle.

[0031] In the figure, 100 is a training arm; 101 is a shell; 102 is a slot; 200 is a main body; 11 is a driving device; 12 is a lead screw; 13 is a moving part; 14 is a guide rod; 15 is a telescopic part; 2 is a quick-release assembly; 21 is a receiving shell; 211 is a first through hole; 212 is a positioning block; 22 is an embedded part; 221 is a second through hole; 23 is a locking assembly; 231 is a plug rod; 232 is an elastic reset part; 233 is an outer cover; 234 is a hand-held part; 235 is a stop block; 3 is a footrest assembly; 31 is a supporting plate; 32 is a shield plate; 4 is a swing mechanism; 41 is a sphere; 42 is a spherical groove; 43 is a connecting rod. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] Combine the following Figure 1-Figure 6 The technical solution provided by the present invention is described in more detail.

[0035] like Figure 1 and Figure 2 As shown, this embodiment provides a lower limb stretching trainer, including a main body 200, a training arm 100, a driving mechanism, a quick release assembly and a footrest assembly, wherein: the training arm 100 includes a housing 101, the training arm 100 is fixedly connected or rotatably connected to the main body 200, the driving mechanism includes a driving device 11, a lead screw 12 and a moving part 13, wherein: the driving device 11 and the lead screw 12 are located in the housing of the training arm, the output end of the driving device 11 is drivingly connected to the lead screw 12, used to drive the lead screw 12 to rotate forward or reverse, the moving part 13 is threadedly connected to the lead screw 12, and the moving part 13 is connected to the footrest assembly 3, used to drive the footrest assembly 3 to reciprocate along the length direction of the lead screw 12 when the lead screw 12 rotates forward or reverses. The driving device 11 can be a motor, the output end of the motor is connected to the lead screw 12, so as to drive the lead screw 12 to rotate forward or reverse, and the other end of the lead screw 12 is rotatably connected to the housing of the trainer.

[0036] See also Figure 3-Figure 6 As shown, the quick-release assembly 2 includes a receiving shell 21, an embedded portion 22 and a locking assembly 23, wherein: the receiving shell 21 is connected to the movable portion 13, the embedded portion 22 is connected to the foot support assembly 3, and the locking assembly 23 includes a locking member (in this embodiment, the locking member includes an insertion rod 231), and the locking member (insertion rod 231) is connected to the receiving shell 21. When the embedded portion 22 is placed in the receiving shell 21, the locking member (insertion rod 231) can be inserted into the embedded portion 22 and connect the receiving shell 21 and the embedded portion 22. By pulling the locking member (insertion rod 231), the locking member (insertion rod 231) can be disengaged from the embedded portion 22, thereby disassembling the embedded portion 22 from the receiving shell 21.

[0037] The lower limb stretching trainer of this embodiment is shown in FIG. Figure 1 and Figure 2As shown, since the movable part 13 is threadedly connected with the lead screw 12, when the driving device 11 drives the lead screw 12 to rotate forward or reverse, the movable part 13 reciprocates along the length direction of the lead screw 12, and the footrest assembly 3 is connected to the movable part 13. Therefore, the footrest assembly 3 can reciprocate along the length direction of the lead screw 12. When the user places the foot on the footrest assembly 3 and the user does not apply a driving force, the footrest assembly 3 can also drive the lower limbs to move, thereby improving the stretching and rehabilitation effects on the lower limbs.

[0038] See also Figure 3-Figure 6 As shown, the footrest assembly 3 is connected to the embedded part 22. When the locking piece (insertion rod 231) is inserted into the embedded part 22, the footrest assembly 3 is connected to the receiving shell 21 and can be moved under the drive of a driving mechanism or manpower. The user places the foot on the footrest assembly 3 to perform stretching training on the lower limbs. When it is necessary to replace the footrest assembly 3 with a different structure, the user pulls the locking piece (insertion rod 231), and the locking piece (insertion rod 231) is disengaged from the embedded part 22, thereby disassembling the embedded part 22 from the receiving shell 21, that is, disassembling the footrest assembly 3 from the trainer body, replacing a new footrest assembly 3, or changing the position of the footrest assembly 3, reinserting the embedded part 22 on the new footrest assembly 3 into the receiving shell 21, and inserting the locking piece back.

[0039] This embodiment provides a specific implementation of a driving mechanism:

[0040] As an alternative embodiment, see Figure 2 As shown, the driving mechanism further includes a guide rod 14 , which is located in the housing of the trainer. The guide rod 14 is arranged parallel to the lead screw 12 , and the moving part 13 is slidably connected to the guide rod 14 .

[0041] The guide rod 14 can prevent the moving part 13 from rotating, and guide the moving part 13, so that the moving part 13 moves linearly along the length direction of the lead screw 12 and the guide rod 14, ensuring stable and smooth movement.

[0042] See also Figure 1 and Figure 2 As shown, the driving device 11 and the lead screw 12 are located in the housing 101, and a slot 102 is provided on the housing 101. The moving part 13 is located in the slot 102, or the moving part 13 passes through the slot 102 to be connected with the footrest assembly 3, and the moving part 13 is movably arranged along the slot 102. With the structure of the slot 102, the moving part 13 can be connected with the footrest assembly 3 through the slot 102 without affecting the movement of the moving part 13.

[0043] Since the driving device 11 and the lead screw 12 are located in the housing 101 of the training arm 100, and a slot 102 is provided on the housing 101 of the training arm 100, external dust and the like can easily enter the training arm 100. If not protected, the driving device 11 and the lead screw 12 inside the training arm 100 can easily be damaged, thus affecting the movement of the lead screw 12.

[0044] For the above problems, as an optional implementation method, see Figure 2 As shown, the driving mechanism also includes a telescopic part 15, wherein a fixed end of one telescopic part 15 is fixed to one end inside the shell 101, and a movable end of the telescopic part 15 is fixedly connected to one side of the movable part 13; a fixed end of another telescopic part 15 is fixed to the other end inside the shell 101, and a movable end of the telescopic part 15 is fixedly connected to the other side of the movable part 13; the telescopic part 15 blocks the slot 102 and can stretch or shrink with the movement of the movable part 13.

[0045] See also Figure 2 As shown, when the moving part 13 moves to the right side of the training arm 100 in the figure, the telescopic part 15 located on the left side of the moving part 13 is stretched, and the telescopic part 15 located on the right side of the moving part 13 in the figure is compressed. Conversely, when the moving part 13 moves to the left side of the training arm 100 in the figure, the telescopic part 15 located on the left side of the moving part 13 is compressed, and the telescopic part 15 located on the right side of the moving part 13 in the figure is stretched. Figure 1 As shown, the two telescopic parts 15 cover the slot 102 to prevent foreign objects from entering the training arm 100 through the slot 102 and affecting the movement of the driving device 11 and the lead screw 12.

[0046] As an alternative embodiment, see Figure 2 As shown, the telescopic portion 15 is in a pleated shape. The telescopic portion 15 can be made of soft materials such as rubber to facilitate stretching and deformation.

[0047] See also Figure 1 and Figure 2 As shown, in the lower limb stretching trainer of this embodiment, the driving device 11 drives the lead screw 12 to rotate, and the moving part 13 is located on the lead screw 12 and reciprocates along the length direction of the lead screw 12, thereby driving the footrest assembly 3 to reciprocate. The user's feet can be placed on the footrest assembly 3, and the footrest assembly 3 is used to restrain the user's feet. In this way, when the user's feet do not actively apply force, the footrest assembly 3 can drive the feet and legs to perform passive movements, and the training mode is diversified.

[0048] In this embodiment, see Figure 3-Figure 6 As shown, a specific implementation of a quick-release assembly is provided:

[0049] See also Figure 4 and Figure 6As shown, the receiving shell 21 is a shell structure with an open upper portion, and the embedded portion 22 is a hollow cavity. Figure 6 A first through hole 211 for the locking member to pass through is provided on the receiving shell 21, and a second through hole 221 for the locking member (insertion rod 231) to pass through is provided on the embedded part 22. When the embedded part 22 is inserted into place on the receiving shell 21, the first through hole 211 is connected with the second through hole 221.

[0050] When the embedded part 22 is inserted into the receiving shell 21, the first through hole 211 is connected to the second through hole 221. At this time, the locking member (insertion rod 231) is inserted into the first through hole 211 and the second through hole 221, so that the receiving shell 21 and the embedded part 22 can be connected, thereby realizing the connection between the training device body and the foot support assembly 3. When the locking member is pulled and the locking member (insertion rod 231) is disengaged from the second through hole 221, the embedded part 22 can be taken out of the receiving shell 21, so that the foot support assembly 3 can be disassembled.

[0051] As an alternative embodiment, see Figure 6 As shown, a positioning block 212 is provided on the inner wall of the receiving shell 21 , and when the embedded portion 22 is inserted into the receiving shell 21 until the lower end of the embedded portion 22 abuts against the positioning block 212 , the first through hole 211 is connected to the second through hole 221 .

[0052] When installing a new footrest assembly 3, the embedded part 22 is inserted into the receiving shell 21 until the lower end of the embedded part 22 abuts against the positioning block 212. At this time, the first through hole 211 is connected to the second through hole 221, and the locking piece (insertion rod 231) can be reinserted into the second through hole 221, so that the embedded part 22 and the receiving shell 21 can be accurately positioned and assembled.

[0053] As an alternative embodiment, see Figure 4-Figure 6 As shown, the locking member of this embodiment includes a plug rod 231, and the locking assembly 23 of this embodiment also includes an outer cover 233 (such as Figure 3 ), elastic reset portion 232, wherein: the end of the insertion rod 231 away from the receiving shell 21 is provided with a stop block 235, the elastic reset portion 232 is sleeved outside the insertion rod 231, one end of the elastic reset portion 232 is fixed to the outer wall of the receiving shell 21, and the other end is against the stop block 235, and the outer cover 233 is provided outside the elastic reset portion 232 (combined with Figure 3 and Figure 4 The insertion rod 231 can be pulled out of the embedded part 22 by an external force, and the elastic reset part 232 can be stretched. The elastic reset part 232 can drive the insertion rod 231 to be reinserted into another embedded part 22 when the external force is removed. The above-mentioned reset elastic part can be a reset spring.

[0054] See also Figure 6When the footrest assembly 3 needs to be disassembled, the insertion rod 231 is pulled away from the receiving shell 21, and the insertion rod 231 is separated from the second through hole 221 of the embedded part 22. At this time, the embedded part 22 and the footrest assembly 3 connected to the embedded part 22 can be disassembled. Since the elastic reset part 232 connects the receiving shell 21 and the insertion rod 231, the insertion rod 231 can always be connected to the receiving shell 21. When replacing a new footrest assembly 3, the new embedded part 22 is inserted into the receiving shell 21 until the lower end of the embedded part 22 abuts against the positioning block 212, which proves that the first through hole 211 is connected to the second through hole 221, and the embedded part 22 is assembled with the receiving shell 21. At this time, the insertion rod 231 is reinserted to connect the embedded part 22 with the receiving shell 21.

[0055] As an alternative embodiment, see Figure 4-Figure 6 The end of the insertion rod 231 away from the receiving shell 21 is provided with a hand-held portion 234, and the outer diameter of the hand-held portion 234 is larger than the outer diameter of the insertion rod 231. The hand-held portion 234 can be a circular hand-held ring, which is convenient for the user to pull or push the insertion rod 231 by hand, so as to facilitate the insertion rod 231 to be pulled out from the embedded portion 22 or to be reinserted into the embedded portion 22.

[0056] The foot support assembly 3 in this embodiment can be used for the user to train while lying down or sitting down. Specifically:

[0057] See also Figure 1 and Figure 3 As shown, the footrest assembly 3 includes a supporting plate 31 and a shield plate 32, wherein: the supporting plate 31 is fixedly connected to the shield plate 32, the shield plate 32 is an arc-shaped plate structure, and when the supporting plate 31 supports the sole of the foot, the shield plate 32 surrounds at least part of the ankle.

[0058] join Figure 1 and Figure 3 The shape of the support plate 31 is convenient for supporting the sole of the user's foot, and the shield plate 32 is an arc-shaped structure, and matches the ankle position of the human body, so as to conveniently surround the ankle position. In this way, when the foot of the trainee is placed on the support plate 31, the shield plate 32 can surround the ankle position, conveniently support the ankle position, and ensure the comfort of the trainee when using it.

[0059] As an alternative embodiment, see Figure 3 As shown, two groups of embedded parts 22 are provided, one group of embedded parts 22 is connected to the supporting plate 31, and the other group of embedded parts 22 is connected to the shield plate 32. During installation, the embedded parts 22 on the supporting plate 31 can be connected to the receiving shell 21 on the training machine body, or the embedded parts 22 on the shield plate 32 can be connected to the receiving shell 21 on the training machine body. Figure 1As shown, when the embedded part 22 on the supporting plate 31 is connected to the receiving shell 21 on the training device body, it is suitable for the user to sit and perform lower limb stretching training; when the embedded part 22 on the shield plate 32 is connected to the receiving shell 21 on the training device body, it is suitable for the user to lie and perform lower limb stretching training.

[0060] With the above structure, trainees can choose to sit or lie down to perform lower limb stretching training according to actual needs, and the training modes are diversified.

[0061] In order to meet the needs of different trainees, the foot support assembly 3 in this embodiment can swing relative to the embedded portion 22.

[0062] See also Figure 4 and Figure 6 As shown, the quick-release footrest assembly also includes a swing mechanism 4, which includes a ball 41, a connecting rod 43 and a ball groove 42, wherein: the ball 41 is fixedly connected to the footrest assembly 3, specifically, the connecting rod 43 connects the ball 41 and the footrest assembly 3, the ball groove 42 is located on the embedded portion 22, the ball 41 extends into the ball groove 42, and the ball 41 can swing in the ball groove 42 under the action of an external force, thereby driving the footrest assembly 3 to swing. Preferably, the ball and the connecting rod are an integrally formed structure to ensure the stability of the structure.

[0063] Since the ball 41 is connected to the footrest assembly 3 and the spherical groove 42 is located on the embedded portion 22, when the user places the foot on the footrest assembly 3, the foot can exert force to drive the footrest assembly 3 to swing compared to the embedded portion 22. With this arrangement, the trainee's foot can actively swing when performing lower limb stretching training. While performing ankle training, it can be adapted to the lower limb stretching habits of different users and can be used in a variety of ways.

[0064] See also Figure 1 , Figure 3-Figure 6 As shown, in the lower limb stretching trainer of this embodiment, when replacing the footrest assembly, the insertion rod 231 is pulled, and the insertion rod 231 can be separated from the embedded part 22, as shown in FIG. Figure 6 As shown, the foot support assembly 3 and the moving part 13 can be disassembled at this time. In this way, the foot support assembly 3 with different structures can be replaced on the moving part 13 to provide more training modes. Figure 3 , the embedded part 22 on the supporting plate 31 can be connected to the receiving shell 21, or the embedded part 22 on the shield plate 32 can be connected to the receiving shell 21, so that the user can do sitting training or supine training. Figure 6 When the user places the foot on the footrest assembly 3, the foot can apply force to drive the footrest assembly 3 to swing compared to the embedded part 22. With this arrangement, the foot of the trainee can actively swing when performing lower limb stretching training. While performing ankle training, it can adapt to the lower limb stretching habits of different users.

[0065] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A lower limb stretching trainer, It is characterized in that It includes a host body, a training arm, a driving mechanism, a quick-release assembly and a footrest assembly, wherein: The training arm is fixedly connected or rotationally connected to the host body, the driving mechanism includes a driving device, a lead screw and a moving part, the driving device and the lead screw are located in the housing of the training arm, the output end of the driving device is connected to the lead screw for driving the lead screw to rotate forward or reversely, the moving part is threadedly connected to the lead screw, and the moving part is connected to the foot support assembly for driving the foot support assembly to reciprocate along the length direction of the lead screw when the lead screw rotates forward or reversely; The quick-release assembly includes a receiving shell, an embedded part and a locking assembly, wherein: the receiving shell is connected to the movable part, the embedded part is connected to the foot support assembly, and the locking assembly includes a locking member, which is connected to the receiving shell. When the embedded part is placed in the receiving shell, the locking member can be inserted into the embedded part and connect the receiving shell and the embedded part. By pulling the locking member, the locking member can be disengaged from the embedded part, thereby removing the embedded part from the receiving shell.

2. The lower limb stretching trainer according to claim 1, It is characterized in that The driving mechanism also includes a guide rod, which is located in the housing of the trainer, and is arranged parallel to the lead screw, and the moving part is slidably connected to the guide rod.

3. The lower limb stretching trainer according to claim 1, It is characterized in that The driving device and the lead screw are located in the shell, a slot is provided on the shell, the movable part is located in the slot, or the movable part passes through the slot to be connected with the footrest assembly, and the movable part is movably arranged along the slot.

4. The lower limb stretching trainer according to claim 3, It is characterized in that The driving mechanism also includes a telescopic part, wherein a fixed end of one of the telescopic parts is fixed to one end inside the shell, and a movable end of the telescopic part is fixedly connected to one side of the movable part; a fixed end of another telescopic part is fixed to the other end inside the shell, and a movable end of the telescopic part is fixedly connected to the other side of the movable part; the telescopic part covers the slot and can stretch or shrink as the movable part moves.

5. The lower limb stretching trainer according to claim 4, It is characterized in that The telescopic portion is in a pleated shape.

6. The lower limb stretching trainer according to claim 1, It is characterized in that The receiving shell is a shell structure with an open top, the embedded part is a hollow cavity, the receiving shell is provided with a first through hole for the locking member to pass through, the embedded part is provided with a second through hole for the locking member to pass through, and when the embedded part is inserted into place on the receiving shell, the first through hole is connected to the second through hole; A positioning block is provided on the inner wall of the receiving shell, and when the embedded portion is inserted into the receiving shell until the lower end of the embedded portion abuts against the positioning block, the first through hole is communicated with the second through hole.

7. The lower limb stretching trainer according to claim 1, It is characterized in that The locking member includes an insertion rod, and the locking assembly also includes an outer cover and an elastic reset portion, wherein: A stop block is provided at one end of the insertion rod facing away from the receiving shell, the elastic reset portion is sleeved on the outside of the insertion rod, one end of the elastic reset portion is fixed to the outer wall of the receiving shell, and the other end abuts against the stop block, and the outer cover is provided outside the elastic reset portion; the insertion rod can be separated from the embedded portion under the pulling of external force and the elastic reset portion can be stretched, and the elastic reset portion can drive the insertion rod to be reinserted into the other embedded portion when the external force is removed.

8. The lower limb stretching trainer according to claim 1, It is characterized in that The footrest assembly comprises a supporting plate and a shield plate, wherein: The support plate is fixedly connected to the shield plate, and the shield plate is an arc-shaped plate structure. When the support plate supports the sole of the foot, the shield plate surrounds at least the ankle.

9. The lower limb stretching trainer according to claim 8, It is characterized in that The inner embedded parts are provided with two groups, wherein one group of the inner embedded parts is connected to the supporting plate, and the other group of the inner embedded parts is connected to the shield plate.

10. The lower limb stretching trainer according to claim 1, It is characterized in that The lower limb stretching trainer further comprises a swing mechanism, which comprises a sphere, a connecting rod and a spherical groove, wherein: The connecting rod connects the ball and the footrest assembly, the spherical groove is located on the embedded part, the ball extends into the spherical groove, and the ball can swing in the spherical groove under the action of external force, thereby driving the footrest assembly to swing compared to the embedded part.

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