Double-pendulum traction device for upper limb rehabilitation

Abstract

The utility model belongs to the technical field of rehabilitation instruments, and discloses a double-pendulum traction device for upper limb rehabilitation, which comprises a fixing groove, a two-way lead screw is arranged in the fixing groove, two ends of the two-way lead screw are in threaded connection with driving plates, two sides of the two-way lead screw are provided with adjusting plates, the adjusting plates are rotatably connected with the driving plates through connecting rods, and the adjusting plates are slidably connected with limiting columns. The limiting columns are sleeved with springs, and friction plates are fixed to the outer side ends of the limiting columns. The fixing frame is fixed to one end of the fixing groove, racks are slidably connected to the two sides of the fixing frame, receding grooves are formed in the two sides of the fixing frame, a fixing rod is fixed between the two racks through the receding grooves, a pull rod is fixed to the middle of the fixing rod, and the other end of the pull rod penetrates through the fixing frame to be rotationally connected with one end of the two-way lead screw; the rack is meshed with a gear which is rotationally connected with the fixing frame through a shaft pin, and a swing arm is fixed to the upper end of the gear through a shaft pin. A user can do push-and-pull actions outwards or inwards, the exercise effect can be achieved, and meanwhile the exercise strength can be adjusted according to needs.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of rehabilitation devices, and particularly relates to a double-pendulum traction device for upper limb rehabilitation. Background Art

[0002] Traction therapy is a method of applying an external force to a certain part or joint of the body to apply a pulling force, causing a certain separation, and stretching the surrounding soft tissues appropriately to achieve the therapeutic purpose. When performing rehabilitation training on joints and muscles, different people have different force requirements at different times. Only under the action of an appropriate pulling force can the best effect be achieved. And during use, due to physical exhaustion or inadvertently, the box body may hit the bottom, causing damage to the device and generating noise. Utility Model Content

[0003] Aiming at the deficiencies of the prior art, the purpose of the present disclosure is to provide a double-pendulum traction device for upper limb rehabilitation. Users can exercise by making pushing or pulling movements outwards or inwards, and at the same time, the exercise intensity can be adjusted according to needs.

[0004] The purpose of the present disclosure can be achieved by the following technical solutions:

[0005] A double-pendulum traction device for upper limb rehabilitation, comprising:

[0006] A fixed groove, in the middle of the inner part of the fixed groove, a bidirectional lead screw is arranged. Driving plates are threadedly connected to the bidirectional lead screw in two different rotation directions. Adjusting plates are arranged on both sides of the bidirectional lead screw. Both ends of the adjusting plates are rotatably connected to connecting rods, and the other ends of the connecting rods are rotatably connected to the corresponding driving plates. A plurality of limiting holes are formed in the adjusting plates, limiting columns are slidably connected in the limiting holes, springs are sleeved on the limiting columns, and friction plates are fixedly connected to the outer ends of the limiting columns, and the friction plates are attached to the inner side walls of the fixed groove;

[0007] A fixed frame, which is fixedly connected to one end of the fixed groove. Chutes are formed on both sides of the fixed frame, racks are slidably connected in the chutes. Avoidance grooves are formed on both sides of the fixed frame. A fixed rod is fixedly connected between the two racks through the avoidance grooves. A pull rod is fixedly connected to the middle of the fixed rod, and the other end of the pull rod passes through the fixed frame and is rotatably connected to one end of the bidirectional lead screw;

[0008] The racks are engaged with gears, the gears are rotatably connected to the fixed frame through pin shafts, and swing arms are fixedly connected to the upper ends of the gears through pin shafts.

[0009] The above technical solution, its principle and technical effects:

[0010] The patient is located between the two swinging arms. Pushing or pulling the swinging arms to both sides causes the swinging arms to drive the gears to rotate around the gear axis. The gears drive the racks to move along the sliding grooves. The two racks drive the fixed rod to move. The fixed rod drives the pull rod to move. The pull rod drives the bidirectional lead screw to move, and then drives the friction plate to move. Due to the elastic force of the spring, there is friction between the friction plate and the side wall of the fixed groove. Due to the existence of friction, the user needs to use a certain amount of force to move the friction plate. At the same time, by rotating the bidirectional lead screw, the two driving plates move towards each other. Under the action of the connecting rod, the two adjusting plates move in opposite directions. The spring is further compressed by force, and the elastic force of the spring acts on the friction plate, increasing the friction between the friction plate and the side wall of the fixed groove. The user needs to use more force than before to move the friction plate, thus achieving the requirement of adjusting different forces.

[0011] In a preferred embodiment of the present invention, it can be further configured as: further comprising a back plate, and the back plate is fixedly connected to the fixed frame.

[0012] In a preferred embodiment of the present invention, it can be further configured as: a base is fixedly connected to the lower end of the back plate, a support rod is fixedly connected to the lower end of the fixed groove, and the lower end of the support rod is fixedly connected to the base.

[0013] In a preferred embodiment of the present invention, it can be further configured as: the fixed frame includes ear plates fixedly connected on both sides, and the gear is fixedly connected to the ear plates through a pin.

[0014] In a preferred embodiment of the present invention, it can be further configured as: a head is fixedly connected to the other end of the bidirectional lead screw.

[0015] In a preferred embodiment of the present invention, it can be further configured as: the spring is sleeved on the limiting post between the friction plate and the adjusting plate.

[0016] In a preferred embodiment of the present invention, it can be further configured as: an adjustment window is opened on the fixed groove.

[0017] In a preferred embodiment of the present invention, it can be further configured as: a grip rod is rotatably connected to the end of the swinging arm away from the gear.

[0018] The explanations of the nouns, conjunctions or adjectives involved in the above technical solutions are as follows:

[0019] Fixed connection means that after the parts or components are fixed, there is no relative movement connection. It is divided into two types: detachable connection and non-detachable connection.

[0020] (1) A detachable connection uses screws, splines, wedge pins, etc. to fix components together. This connection method can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, and wedge pins), and they must be fastened properly.

[0021] (2) Non-detachable connections mainly refer to welding, riveting, and mortise fits, etc. Since forging, sawing, or oxy-fuel cutting is required to disassemble during maintenance or replacement, spare parts generally cannot be used a second time. At the same time, during connection, attention should be paid to process quality, technical inspection, and remedial measures (such as correction, polishing, etc.).

[0022] Threaded connection refers to a detachable connection that uses threaded parts (or the threaded parts of the connected components) to connect the connected components into one body.

[0023] Sliding connection means that two objects are in contact but not fixed, and they can slide relative to each other.

[0024] Rotational connection means that the connection between parts allows the parts to rotate relative to each other.

[0025] Advantages of the present disclosure:

[0026] Users can exercise by making pushing or pulling movements outward or inward, and at the same time, the intensity of exercise can be adjusted according to needs. Description of the drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 is the overall structural schematic diagram of the embodiment of the present disclosure;

[0029] Figure 2 is the connection structure schematic diagram of the fixed groove and the fixed frame of the embodiment of the present disclosure;

[0030] Figure 3 is the structural schematic diagram of the fixed frame of the embodiment of the present disclosure;

[0031] Figure 4 is the internal structural schematic diagram of the fixed groove of the embodiment of the present disclosure. Detailed implementation manners

[0032] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0033] In the description of the present disclosure, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientations or positional relationships are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0034] According to the concept of the present application, an embodiment of a double-pendulum traction device for upper limb rehabilitation will be described herein in conjunction with Figures 1 to 4 Specifically, the double-pendulum traction device for upper limb rehabilitation is configured as a split structure, which has components such as a fixed groove 1, a fixed frame 9, a swing arm 16, a friction plate 22, etc. Through the mutual cooperation of structures such as a bidirectional lead screw 2, a rack 11, a spring 8, a gear 15, etc., when the patient is located between the two swing arms 16 and pushes or pulls the swing arms 16 to both sides, the swing arms 16 drive the gear 15 to rotate around the axis of the gear 15, the gear 15 drives the rack 11 to move along the chute 10, the two racks 11 drive the fixed rod 13 to move, the fixed rod 13 drives the pull rod 14 to move, the pull rod 14 drives the bidirectional lead screw 2 to move, and then drives the friction plate 22 to move. Due to the elastic force of the spring 8, there is a frictional force between the friction plate 22 and the side wall of the fixed groove 1. Due to the existence of the frictional force, the user needs to use a certain amount of force to move the friction plate 22. At the same time, by rotating the bidirectional lead screw 2, the two driving plates 3 move towards each other. Under the action of the connecting rod 5, the two adjusting plates 4 move in the opposite direction, the spring 8 is further compressed by force, and the elastic force of the spring 8 acts on the friction plate 22, increasing the frictional force between the friction plate 22 and the side wall of the fixed groove 1. The user needs to use more force than before to move the friction plate 22, thereby achieving the requirement of adjusting different forces.

[0035] As Figures 1-4 shown, a double-pendulum traction device for upper limb rehabilitation includes:

[0036] Fixing groove 1, a bidirectional lead screw 2 is arranged in the middle inside the fixing groove 1. Driving plates 3 are threadedly connected to the bidirectional lead screw 2 in two different thread directions. Adjusting plates 4 are arranged on both sides of the bidirectional lead screw 2. Both ends of the adjusting plate 4 are rotatably connected to a connecting rod 5, and the other end of the connecting rod 5 is rotatably connected to the corresponding driving plate 3. A number of limiting holes 6 are provided on the adjusting plate 4. A limiting post 7 is slidably connected in the limiting hole 6. A spring 8 is sleeved on the limiting post 7. The outer end of the limiting post 7 is fixedly connected with a friction plate 22, and the friction plate 22 is attached to the inner side wall of the fixing groove 1;

[0037] Fixing frame 9, the fixing frame 9 is fixedly connected to one end of the fixing groove 1. Chute 10 are provided on both sides of the fixing frame 9. A rack 11 is slidably connected in the chute 10. Avoidance grooves 12 are provided on both sides of the fixing frame 9. A fixing rod 13 is fixedly connected between the two racks 11 through the avoidance groove 12. A pull rod 14 is fixedly connected in the middle of the fixing rod 13. The other end of the pull rod 14 passes through the fixing frame 9 and is rotatably connected to one end of the bidirectional lead screw 2;

[0038] The rack 11 is engaged with a gear 15. The gear 15 is rotatably connected to the fixing frame 9 through a pin. The upper end of the gear 15 is fixedly connected with a swing arm 16 through a pin.

[0039] When in use, the patient is located between the two swing arms 16. Push or pull the swing arms 16 to both sides. The swing arms 16 drive the gear 15 to rotate around the axis of the gear 15. The gear 15 drives the rack 11 to move along the chute 10. The two racks 11 drive the fixing rod 13 to move. The fixing rod 13 drives the pull rod 14 to move. The pull rod 14 drives the bidirectional lead screw 2 to move, and then drives the friction plate 22 to move. Due to the elastic force of the spring 8, there is a frictional force between the friction plate 22 and the side wall of the fixing groove 1. Due to the existence of the frictional force, the user needs to use a certain amount of force to make the friction plate 22 move. At the same time, by rotating the bidirectional lead screw 2, the two driving plates 3 move towards each other. Under the action of the connecting rod 5, the two adjusting plates 4 move in the opposite direction. The spring 8 is further compressed by force. The elastic force of the spring 8 acts on the friction plate 22, increasing the frictional force between the friction plate 22 and the side wall of the fixing groove 1. The user needs to use more force than before to make the friction plate 22 move, thus achieving the requirement of adjusting different forces.

[0040] A bidirectional lead screw is a lead screw with two threads of different helix directions manufactured on one lead screw, that is, one right-handed thread and one left-handed thread. The right and left-handed nuts screwed on it are respectively connected to the moving parts. When the lead screw rotates, the two moving parts approach or separate quickly with the nuts, thus generating the required mechanical function.

[0041] A rack is a special gear with teeth distributed on a strip-shaped body. Racks are also divided into straight-tooth racks and helical racks, which are respectively used in pairs with straight-tooth cylindrical gears and helical cylindrical gears; the tooth profile of the rack is a straight line rather than an involute (for the tooth surface, it is a plane), which is equivalent to a cylindrical gear with an infinite pitch circle radius.

[0042] A gear refers to a mechanical component with teeth on the rim that can continuously mesh to transmit motion and power.

[0043] In one embodiment of the present utility model, it further includes a back plate 17, and the back plate 17 is fixedly connected to the fixed frame 9. It is convenient for rehabilitation patients to have a support point on the back during rehabilitation.

[0044] In one embodiment of the present utility model, the lower end of the back plate 17 is fixedly connected to a base 18, the lower end of the fixed slot 1 is fixedly connected to a support rod 19, and the lower end of the support rod 19 is fixedly connected to the base 18. It is used to support the entire device and improve stability.

[0045] In one embodiment of the present utility model, the fixed frame 9 includes ear plates 20 fixedly connected on both sides, and the gear 15 is fixedly connected to the ear plates 20 through a pin.

[0046] In one embodiment of the present utility model, the other end of the bidirectional lead screw 2 is fixedly connected to a head 21. It is convenient for a wrench to turn the head 21 to drive the bidirectional lead screw 2 to rotate.

[0047] In one embodiment of the present utility model, the spring 8 is sleeved on the limit post 7 between the friction plate 22 and the adjusting plate 4.

[0048] In one embodiment of the present utility model, an adjusting window 23 is opened on the fixed slot 1. It is convenient for a wrench to extend into the window 23 to turn the head 21 to drive the bidirectional lead screw 2 to rotate.

[0049] In one embodiment of the present utility model, a grip rod 24 is rotatably connected to one end of the swing arm 16 away from the gear 15.

[0050] Next, in combination with the drawings and embodiments, a double - pendulum traction device for upper limb rehabilitation provided by the present utility model will be further described.

[0051] A double - pendulum traction device for upper limb rehabilitation includes:

[0052] A fixed slot 1, in the middle of the interior of the fixed slot 1, there is a bidirectional lead screw 2. The bidirectional lead screw 2 is threadedly connected to driving plates 3 in two different thread directions. On both sides of the bidirectional lead screw 2, there are adjusting plates 4. Both ends of the adjusting plates 4 are rotatably connected to connecting rods 5, and the other ends of the connecting rods 5 are rotatably connected to the corresponding driving plates 3. A number of limit holes 6 are opened on the adjusting plates 4, and limit posts 7 are slidably connected in the limit holes 6. Springs 8 are sleeved on the limit posts 7, and the outer ends of the limit posts 7 are fixedly connected to friction plates 22, and the friction plates 22 are in contact with the inner side walls of the fixed slot 1;

[0053] The fixed frame 9 is fixedly connected to one end of the fixed groove 1. Slide grooves 10 are formed on both sides of the fixed frame 9, and racks 11 are slidably connected in the slide grooves 10. Avoidance grooves 12 are formed on both sides of the fixed frame 9, and a fixed rod 13 is fixedly connected between the two racks 11 through the avoidance grooves 12. A pull rod 14 is fixedly connected to the middle of the fixed rod 13, and the other end of the pull rod 14 passes through the fixed frame 9 and is rotatably connected to one end of the bidirectional lead screw 2;

[0054] The racks 11 are engaged with gears 15. The gears 15 are rotatably connected to the fixed frame 9 through pins, and swing arms 16 are fixedly connected to the upper ends of the gears 15 through pins.

[0055] It further includes a back plate 17, and the back plate 17 is fixedly connected to the fixed frame 9.

[0056] The lower end of the back plate 17 is fixedly connected to a base 18, the lower end of the fixed groove 1 is fixedly connected to a support rod 19, and the lower end of the support rod 19 is fixedly connected to the base 18.

[0057] The fixed frame 9 includes ear plates 20 fixedly connected to both sides, and the gears 15 are fixedly connected to the ear plates 20 through pins.

[0058] The other end of the bidirectional lead screw 2 is fixedly connected to a head 21.

[0059] The spring 8 is sleeved on the limiting post 7 between the friction plate 22 and the adjusting plate 4.

[0060] An adjusting window 23 is formed on the fixed groove 1.

[0061] One end of the swing arm 16 away from the gear 15 is rotatably connected to a grip rod 24.

[0062] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. 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 can be combined in a suitable manner in any one or more embodiments or examples.

[0063] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure will have various changes and improvements, and these changes and improvements all fall within the scope of the present disclosure claimed.

Claims

1. A double pendulum traction device for upper limb rehabilitation, characterized in that, Comprising: A fixed groove (1), in the middle of the interior of the fixed groove (1) is provided a bidirectional lead screw (2), on two different threads of the bidirectional lead screw (2) are threadedly connected drive plates (3), on both sides of the bidirectional lead screw (2) are provided adjusting plates (4), at both ends of the adjusting plates (4) are rotatably connected connecting rods (5), the other ends of the connecting rods (5) are rotatably connected to the corresponding drive plates (3), on the adjusting plates (4) are provided a number of limiting holes (6), slidably connected in the limiting holes (6) are limiting posts (7), on the limiting posts (7) are sleeved springs (8), the outer ends of the limiting posts (7) are fixedly connected with friction plates (22), and the friction plates (22) are in contact with the inner side walls of the fixed groove (1); A fixed frame (9), the fixed frame (9) is fixedly connected to one end of the fixed groove (1), on both sides of the fixed frame (9) are provided sliding grooves (10), slidably connected in the sliding grooves (10) are racks (11), on both sides of the fixed frame (9) are provided avoiding grooves (12), between the two racks (11) is fixedly connected with a fixed rod (13) through the avoiding grooves (12), in the middle of the fixed rod (13) is fixedly connected with a pull rod (14), the other end of the pull rod (14) passes through the fixed frame (9) and is rotatably connected to one end of the bidirectional lead screw (2); The racks (11) are engaged with gears (15), the gears (15) are rotatably connected to the fixed frame (9) through pins, and the upper ends of the gears (15) are fixedly connected with swing arms (16) through pins.

2. The double-pendulum traction device for upper limb rehabilitation according to claim 1, wherein, It further includes a back plate (17), and the back plate (17) is fixedly connected to the fixed frame (9).

3. The double pendulum traction device for upper limb rehabilitation according to claim 2, characterized in that, At the lower end of the back plate (17) is fixedly connected a base (18), at the lower end of the fixed groove (1) is fixedly connected a support rod (19), and the lower end of the support rod (19) is fixedly connected to the base (18).

4. The double pendulum traction device for upper limb rehabilitation according to claim 3, wherein, The fixed frame (9) includes ear plates (20) fixedly connected to both sides, and the gears (15) are fixedly connected to the ear plates (20) through pins.

5. The double pendulum traction device for upper limb rehabilitation according to claim 4, wherein, The other end of the bidirectional lead screw (2) is fixedly connected with a head (21).

6. The double pendulum traction device for upper limb rehabilitation according to claim 5, characterized in that, The spring (8) is sleeved on the limiting post (7) between the friction plate (22) and the adjusting plate (4).

7. A double pendulum traction device for upper limb rehabilitation according to claim 1, characterized in that, An adjusting window (23) is provided on the fixed groove (1).

8. A double pendulum traction device for upper limb rehabilitation according to claim 1, characterized in that, At the end of the swing arm (16) away from the gear (15) is rotatably connected a grip rod (24).

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