Elbow joint trainer

Abstract

The utility model relates to the technical field of rehabilitation equipment, and provides an elbow joint trainer which comprises a shell, a reciprocating motion mechanism, a flexion and extension assembly, a first fixing assembly and a second fixing assembly. The reciprocating motion mechanism is arranged in the shell; the bending and stretching assembly comprises a supporting seat, a supporting rod, a fixing seat and a connecting arm, the supporting seat is connected with the reciprocating motion mechanism, vertical plates are arranged on the two sides of the supporting seat, arc-shaped grooves are formed in the vertical plates, and the supporting rod is arranged between the vertical plates and is in sliding fit with the arc-shaped grooves; one end of the connecting arm is hinged to the supporting rod, and the other end of the connecting arm is hinged to the fixing base. The first fixing assembly is used for fixing the upper arm part, and the second fixing assembly is used for fixing the wrist part. The reciprocating motion mechanism is arranged in the shell, the bending and stretching assembly is driven by the reciprocating motion mechanism to act, the bending and stretching actions of the elbow joint can be completed, the overall scheme is simple in structure and easy to manufacture, and the stability of the mode of converting linear motion into curvilinear motion through the vertical plate is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of rehabilitation equipment, in particular to an elbow joint trainer. Background Art

[0002] Under normal conditions, the axial joint can flex and extend freely. When the elbow joint suffers a serious injury, the axial joint flexion and extension dysfunction after surgery generally requires long-term training for rehabilitation.

[0003] In the related art, similar trainers have relatively complex structures, resulting in complicated operations and high production costs, and the stability of self-driven trainers needs to be improved. Utility Model Content

[0004] The utility model provides an elbow joint trainer, which is used to solve the defects of the elbow joint trainer in the prior art, such as complex structure and poor stability.

[0005] The utility model provides an elbow joint trainer, comprising: a shell, a reciprocating motion mechanism, a flexion and extension component, a first fixing component and a second fixing component; the shell has an installation space; the reciprocating motion mechanism is arranged in the installation space; the flexion and extension component comprises a support seat, a support rod, a fixing seat and a connecting arm, the support seat is connected to the reciprocating motion mechanism to drive the support seat to move back and forth through the reciprocating motion mechanism, vertical plates are provided on both sides of the support seat, and arc grooves are opened on the vertical plates on both sides, the support rod is provided between the vertical plates, and the two ends of the support rod are slidably matched with the arc grooves; the fixing seat is provided on the shell, one end of the connecting arm is hinged to the support rod, and the other end of the connecting arm is hinged to the fixing seat; the first fixing component is provided on the shell and is located on one side of the fixing seat, and the first fixing component is used to fix the upper arm part; the second fixing component is provided on the support rod, and the second fixing component is used to fix the wrist part.

[0006] The elbow joint trainer provided by the present invention further includes a limiting component, which is arranged in the shell and below the support seat. The limiting component is used to limit the movement range of the support seat.

[0007] According to the elbow joint trainer provided by the present invention, the limit assembly includes a sliding rod and two travel switches. The sliding rod is fixed in the installation space. The two travel switches are slidably set on the sliding rod and are located on both sides of the support seat. The travel switch is used to limit the movement of the support seat within the two travel switches.

[0008] According to the elbow joint trainer provided by the present invention, a slider is slidably provided on the sliding rod, the travel switch is connected to the slider, and a locking device is further provided on the slider, and the locking device is used to lock the slider.

[0009] According to the elbow joint trainer provided by the present invention, the reciprocating motion mechanism includes a drive motor and a transmission screw. The drive motor is arranged in the installation space, the output end of the drive motor is connected to the transmission screw, the transmission screw is rotatably arranged in the installation space, and the support seat is threadedly engaged with the transmission screw to drive the support seat to move.

[0010] According to the elbow joint trainer provided by the present invention, the reciprocating motion mechanism further includes a slide, which is slidably arranged in the installation space, the slide is threadedly engaged with the transmission screw, and the support seat is arranged on the slide.

[0011] According to the elbow joint trainer provided by the present invention, the first fixing assembly includes a first fixing portion and a first flexible contact portion, the first fixing portion is arranged on the shell, the first flexible contact portion is arranged on the first fixing portion, and the first fixing portion is provided with a plurality of first restraints, and the first restraints are used to fix the upper arm part.

[0012] According to the elbow joint trainer provided by the present invention, the second fixing assembly includes a second fixing part and a second flexible contact part, the second fixing part is hinged to the support rod, the second flexible contact part is arranged on the second fixing part, and the second fixing part is also provided with a plurality of second restraints, which are used to fix the wrist part.

[0013] According to the elbow joint trainer provided by the present invention, sliding bar holes arranged along the length direction of the shell are opened on the side walls on both sides of the shell, both sides of the support seat extend from the sliding bar holes, and the vertical plates are connected to the protruding ends on both sides of the support seat.

[0014] According to the elbow joint trainer provided by the present invention, one end of the shell has an inclined end surface, and a control panel is provided on the inclined end surface.

[0015] The utility model provides an elbow joint trainer, which can complete the flexion and extension movement of the elbow joint by arranging a reciprocating motion mechanism in a shell and driving the flexion and extension component through the reciprocating motion mechanism. The overall solution has a simple structure and is easy to manufacture, and the method of converting linear motion into curved motion through the vertical plate has higher stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional structural diagram of the elbow joint trainer provided by the utility model.

[0018] Figure 2 This is one of the schematic diagrams of the internal structure of the elbow joint trainer provided by the present invention.

[0019] Figure 3 This is the second schematic diagram of the internal structure of the elbow joint trainer provided by the present invention.

[0020] Reference numerals:

[0021] 1. Housing; 11. Sliding bar hole; 12. Control panel; 2. Flexion and extension assembly; 21. Support seat; 211. Vertical plate; 2111. Arc groove; 22. Support rod; 23. Connecting arm; 24. Fixed seat; 3. First fixed assembly; 4. Second fixed assembly; 5. Limit assembly; 51. Knob handle; 52. Abutment sleeve; 53. Sliding rod; 54. Travel switch; 55. Slider; 56. Screw; 6. Reciprocating motion mechanism; 61. Drive motor; 62. Transmission screw; 63. Slide; 64. Connecting seat. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0025] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0027] In the related art, one type of elbow joint trainer is a simple one, which is generally difficult to automatically flex and extend. Another type is a self-propelled trainer equipped with a drive device to achieve automatic flexion and extension. These devices are often complex in structure and expensive to manufacture, and they usually use a joint-like drive mechanism for operation, which leaves room for improvement in stability.

[0028] Regarding the problems in related technologies, such as Figure 1-Figure 3 As shown, the utility model provides an elbow joint trainer, comprising a housing 1, a reciprocating motion mechanism 6, a flexion and extension assembly 2, a first fixing assembly 3 and a second fixing assembly 4; the housing 1 has an installation space; the reciprocating motion mechanism 6 is arranged in the installation space; the flexion and extension assembly 2 comprises a support seat 21, a support rod 22, a fixing seat 24 and a connecting arm 23, the support seat 21 is connected to the reciprocating motion mechanism 6, so as to drive the support seat 21 to move back and forth through the reciprocating motion mechanism 6, and vertical plates 211 are provided on both sides of the support seat 21, and the vertical plates on both sides are provided. The plates 211 are each provided with an arcuate groove 2111. The support rod 22 is provided between the vertical plates 211, and both ends of the support rod 22 are slidably engaged with the arcuate groove 2111. The fixing seat 24 is provided on the shell 1, and one end of the connecting arm 23 is hinged to the support rod 22, and the other end of the connecting arm 23 is hinged to the fixing seat 24. The first fixing assembly 3 is provided on the shell 1 and is located on one side of the fixing seat 24. The first fixing assembly 3 is used to fix the upper arm portion. The second fixing assembly 4 is provided on the support rod 22, and the second fixing assembly 4 is used to fix the wrist portion. The elbow joint trainer needs to drive the forearm to flex and extend the elbow portion to achieve rehabilitation. In this embodiment, the support seat 21 is driven to move by the reciprocating motion mechanism 6. During the movement of the support seat 21, the support rod 22 is caused to move in a curve along the arcuate groove 2111, thereby achieving support for the forearm portion and achieving flexion and extension training of the elbow portion.

[0029] It is understandable that the entire trainer needs to bear the gravity of the arm when performing flexion and extension movements, which requires the trainer to have good force and stable drive. In this embodiment, the shell 1 is placed as a whole on a platform or the ground, and the overall support is stable and the force is stable. The first fixing component 3 is used to fix the upper arm part, and the second fixing component 4 is used to fix the wrist part, and the second fixing component 4 is connected to the support rod 22, that is, the forearm part is supported by the support rod 22, and the support rod 22 is supported by the connecting arm 23. The entire support structure is stable in force, and the bending and extension of the elbow part can be achieved by moving the support seat 21 left and right, thereby realizing flexion and extension training.

[0030] Furthermore, in this embodiment, the arc groove 2111 on the vertical plate 211 is used to convert the linear motion in the left and right directions into the curved motion of the support rod 22 along the arc groove 2111, thereby driving the forearm to flex and extend. The entire transmission is simple and the transmission mechanism is highly stable.

[0031] The housing 1 is constructed as a long columnar structure, which facilitates the arrangement of the reciprocating mechanism 6 and facilitates assembly and use. When in use, the upper arm and forearm are fixed separately, and the reciprocating mechanism 6 is opened to achieve flexion and extension.

[0032] In this specific example, the sidewalls of the housing 1 are provided with sliding bar holes 11 arranged along the length of the housing 1. Both sides of the support base 21 extend from the sliding bar holes 11, and vertical plates 211 are connected to the protruding ends of the support base 21. The main body of the support base 21 is located within the installation space, and its ends on both sides extend from the sliding bar holes 11 to connect with the vertical plates 211. The two vertical plates 211 are located on both sides of the housing 1, which can provide good support for the support rod 22.

[0033] It is understandable that the opening of the sliding bar hole 11 enables the support seat 21 to reciprocate along the length direction of the shell 1 and to achieve complete bending and complete extension, thereby improving its applicability.

[0034] In a specific embodiment, the reciprocating motion mechanism 6 can be provided in various ways. For example, it can be provided by a pneumatic cylinder or an oil cylinder device to pull the support base 21 to reciprocate within the housing 1. Of course, it can also be provided by a transmission screw 62 and a drive motor 61. This embodiment uses the transmission screw 62 and the drive motor 61 as an example for description. For details, please refer to the following description.

[0035] In a specific embodiment, Figure 2 As shown, the reciprocating motion mechanism 6 includes a drive motor 61 and a transmission screw 62. The drive motor 61 is fixedly installed in the installation space. The output end of the drive motor 61 is connected to the transmission screw 62. The transmission screw 62 is rotatably installed in the installation space. The support base 21 and the transmission screw 62 are threadedly engaged to drive the support base 21 to move. Compared with other transmission methods, the method of using the transmission screw 62 and the drive motor 61 to cooperate has greater stability, can make the transmission process more stable, and can simplify the drive control.

[0036] In a specific configuration, two connecting seats 64 are provided on the bottom plate of the housing 1. The two connecting seats 64 have mounting holes. The transmission screw 62 is provided between the two connecting seats 64 through the mounting holes, and the transmission screw 62 rotates in conjunction with the connecting seats 64. Specifically, support bearings are provided at both ends of the transmission screw 62. The support bearings are located in the mounting holes to support the transmission screw 62. One end of the transmission screw 62 is connected to the drive motor 61, so that the drive motor 61 can drive the transmission screw 62 to rotate.

[0037] In a specific example, Figure 2 、 Figure 3 As shown, the reciprocating mechanism 6 also includes a slide 63, which is slidably disposed within the installation space. The slide 63 is threadedly engaged with the transmission screw 62, and the support base 21 is disposed on the slide 63. The provision of the slide 63 facilitates the assembly of the support base 21, making the sliding movement more stable. During installation, the support base 21 is connected to the slide 63 via bolts, thereby achieving the connection of the support base 21.

[0038] In a further example, the slide 63 has a threaded hole that is threadedly engaged with the transmission screw 62, so that when the transmission screw 62 rotates, the slide 63 can move axially along the rod body of the transmission screw 62, thereby achieving horizontal linear movement. To further improve stability, a sliding mating block can be provided at the bottom of the slide 63, corresponding to a slide rail provided on the bottom surface of the housing 1. The slide rail and the sliding mating block slide in cooperation with each other, thereby improving the stability of the movement of the slide 63.

[0039] According to one embodiment of the present invention, a limiter assembly 5 is further included. The limiter assembly 5 is disposed within the housing 1 and below the support base 21. The limiter assembly 5 is used to limit the range of movement of the support base 21. To adjust different flexion and extension angles during different training phases, the limiter assembly 5 is provided in this embodiment to limit the range of movement of the support base 21, thereby controlling the flexion and extension angles.

[0040] It is understandable that during rehabilitation training, different rehabilitation stages and different injury conditions will have different flexion and extension angles. In this embodiment, the movement range of the support seat 21 can be limited by the setting of the limit assembly 5. If the movement range of the support seat 21 is controlled, then the range of the curved movement of the support rod 22 is also controlled, thereby achieving the control of different flexion and extension angles.

[0041] In the specific setting, the limit assembly 5 includes a sliding rod 53 and two limit switches 54. The sliding rod 53 is fixed in the installation space. The two limit switches 54 are both slidably set on the sliding rod 53 and are located on both sides of the support seat 21. The limit switch 54 is used to limit the movement of the support seat 21 within the two limit switches 54.

[0042] It is understandable that the limit switch 54 can generate an electrical signal when touched to control the operation of the drive motor 61. After receiving the electrical signal, the drive motor 61 can realize rotation switching, so that the support base 21 can operate between the two limit switches 54.

[0043] In some examples, the drive motor 61 is connected to a commutator, and the two limit switches 54 and the drive motor 61 are connected to a controller that can receive and process electrical signals. For example, when the support base 21 moves to one side and contacts the limit switch 54, the limit switch 54 sends an electrical signal. At this time, the controller can issue a command based on the electrical signal to control the motor to stop moving and reverse the drive motor 61 through the commutator, so that the motor stops after contacting the limit switch 54 on one side and moves to the other side.

[0044] A touch block may be provided on the support base 21 , and the touch block may contact the travel switch 54 during movement, thereby achieving control of the travel range of the support base 21 .

[0045] According to the embodiment provided by the present utility model, Figure 2 、 Figure 3 As shown, a slider 55 is slidably mounted on the sliding rod 53. The travel switch 54 is connected to the slider 55. The slider 55 is also provided with a locking device for locking the slider 55. The slider 55 needs to be locked when it reaches a predetermined position to facilitate triggering of the travel switch 54 and the support base 21. In this embodiment, the locking device can be provided to lock the slider 55 after it reaches the predetermined position, so that the slider 55 can be stably positioned in the predetermined position, thereby achieving control of the flexion and extension angle.

[0046] In a specific example, the locking device includes a screw 56 and a knob handle 51. One end of the screw 56 is connected to the slider 55, and the other end of the screw 56 is threadedly connected to the knob handle 51. The screw 56 extends from the slide bar hole 11. By rotating the rotary handle, the end of the rotary handle abuts the side wall of the housing 1. At this time, the slider 55 is subjected to the tension provided by the screw 56, thereby achieving the locking of the slider 55. In a further example, for ease of operation, an abutment sleeve 52 is provided on the outside of the screw 56. The abutment sleeve 52 can prevent the rotary handle from directly abutting the side wall of the housing 1, thereby improving the stability of the locking.

[0047] According to one embodiment of the present invention, the first fixing assembly 3 includes a first fixing portion and a first flexible contact portion. The first fixing portion is fixed to the housing 1, and the first flexible contact portion is provided on the first fixing portion. The first fixing portion is provided with a plurality of first straps, which are used to secure the wrist. During training, it is necessary to secure the upper arm and forearm. In this embodiment, the provision of the first flexible contact portion in conjunction with the first straps enables a stable overall connection, ensuring comfortable upper arm fixation.

[0048] It is understandable that during training, the upper arm and forearm need to be fixed to enable stable flexion and extension movements. In this embodiment, the first flexible contact part includes flexible skin-friendly materials such as sponge and silicone, which can enhance the patient's experience and avoid injury during the fixation process.

[0049] According to one embodiment of the present invention, the second fixing assembly 4 includes a second fixing portion and a second flexible contact portion. The second fixing portion is hingedly connected to the support rod 22. The second flexible contact portion is provided on the second fixing portion. The second fixing portion is also provided with a plurality of second restraint straps, which are used to secure the wrist. Similarly, the provision of the second flexible contact portion can provide a more comfortable wrist fixation and prevent injury during the fixation process.

[0050] It can be understood that, through the coordinated use of the first fixing component 3 and the second fixing component 4, the overall stability is higher during training, and the arm part can be well fixed.

[0051] In a specific embodiment, arc-shaped placement channels are provided in both the first flexible contact portion and the second flexible contact portion. The arc-shaped placement channels are used to fit the contour of the arm to improve the stability of the restraint belt fixation.

[0052] In the specific configuration, a handle is provided on the housing 1 and on an end surface of one end of the housing 1. The arrangement of the handle facilitates the transportation of the entire device.

[0053] According to an embodiment of the present invention, one end of the housing 1 has an inclined end surface, on which a control panel 12 is provided. The inclined setting can facilitate the operation of the control panel 12.

[0054] Specifically, the control panel 12 is connected with a power socket and other control buttons, and a power supply can be connected through the power socket. Of course, a built-in power supply can also be used to power the drive motor 61.

[0055] From the above description of the embodiments, those skilled in the art will clearly understand that each embodiment utilizes flexion-extension assembly 2 to convert linear motion into curved motion of support rod 22, resulting in higher overall force and greater stability. Furthermore, by locating reciprocating mechanism 6 within housing 1 and driving flexion-extension assembly 2 to achieve elbow flexion and extension, the overall solution is simple in structure and easy to manufacture.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An elbow joint trainer, characterized in that: include: a housing, wherein the housing has an installation space; a reciprocating motion mechanism, the reciprocating motion mechanism being arranged in the installation space; A flexion and extension assembly, the flexion and extension assembly includes a support seat, a support rod, a fixed seat and a connecting arm, the support seat is connected to the reciprocating motion mechanism to drive the support seat to move back and forth through the reciprocating motion mechanism, vertical plates are provided on both sides of the support seat, and arc-shaped grooves are provided on the vertical plates on both sides, the support rod is provided between the vertical plates, and the two ends of the support rod are slidably matched with the arc-shaped grooves; the fixed seat is provided on the shell, one end of the connecting arm is hinged to the support rod, and the other end of the connecting arm is hinged to the fixed seat; a first fixing assembly, the first fixing assembly being provided on the housing and located on one side of the fixing seat, the first fixing assembly being used to fix the upper arm portion; The second fixing component is arranged on the support rod and is used to fix the wrist part.

2. The elbow joint trainer according to claim 1, characterized in that: It also includes a limiting component, which is arranged in the shell and below the support base. The limiting component is used to limit the moving range of the support base.

3. The elbow joint trainer according to claim 2, characterized in that: The limit assembly includes a sliding rod and two travel switches. The sliding rod is fixed in the installation space. The two travel switches are slidably set on the sliding rod and are located on both sides of the support seat. The travel switch is used to limit the movement of the support seat within the two travel switches.

4. The elbow joint trainer according to claim 3, characterized in that: A slider is slidably provided on the sliding rod, the travel switch is connected to the slider, and a locking device is further provided on the slider for locking the slider.

5. The elbow joint trainer according to claim 1, characterized in that: The reciprocating motion mechanism includes a drive motor and a transmission screw. The drive motor is arranged in the installation space. The output end of the drive motor is connected to the transmission screw. The transmission screw is rotatably arranged in the installation space. The support seat is threadedly engaged with the transmission screw to drive the support seat to move.

6. The elbow joint trainer according to claim 5, characterized in that: The reciprocating motion mechanism further includes a slide, which is slidably arranged in the installation space, the slide is threadably engaged with the transmission screw, and the support seat is arranged on the slide.

7. The elbow joint trainer according to claim 1, characterized in that: The first fixing component includes a first fixing portion and a first flexible contact portion, the first fixing portion is arranged on the shell, the first flexible contact portion is arranged on the first fixing portion, and the first fixing portion is provided with a plurality of first restraints, and the first restraints are used to fix the upper arm part.

8. The elbow joint trainer according to claim 1, characterized in that: The second fixing assembly includes a second fixing portion and a second flexible contact portion. The second fixing portion is hinged to the support rod. The second flexible contact portion is provided on the second fixing portion. The second fixing portion is also provided with a plurality of second restraints. The second restraints are used to fix the wrist part.

9. The elbow joint trainer according to claim 1, characterized in that: Sliding bar holes arranged along the length direction of the shell are opened on the side walls on both sides of the shell, both sides of the support seat extend out from the sliding bar holes, and the vertical plates are connected to the extended ends on both sides of the support seat.

10. The elbow joint trainer according to claim 1, characterized in that: One end of the shell has an inclined end surface, and a control panel is provided on the inclined end surface.

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