CN113633925B - Recovered wall chest expander of using - Google Patents

Abstract

The invention relates to the technical field of rehabilitation equipment, in particular to a wall chest expander for rehabilitation, which comprises a top plate, a base, a guide rod connected between the top plate and the base and a balancing weight connected to the guide rod in a sliding manner, wherein a pull rope is fixed at the top of the balancing weight, a pulley for guiding the pull rope is rotatably arranged below the top plate, a buffer sleeve is sleeved at the bottom end of the guide rod in a sliding manner, a buffer cavity is formed in the base, the buffer sleeve is connected in the buffer cavity in a sliding manner, and a spring for driving the buffer sleeve to reset is arranged in the buffer cavity. According to the invention, the balancing weight is buffered through the buffer sleeve, so that the impact of the balancing weight on the base can be reduced, the service life of the base is prolonged, and the noise can be reduced.

Description

A wall tensioner for rehabilitation

technical field

The invention relates to the technical field of rehabilitation equipment, in particular to a wall tensioner for rehabilitation.

Background technique

Wall tensioner is a commonly used limb training equipment, which is widely used in limb rehabilitation training for patients with disabilities, strokes, hemiplegia, and spinal injuries.

At present, the wall tensioner on the market generally includes a top plate, a base, a guide rod connected between the top plate and the base, and a counterweight block slidably connected to the guide rod. To achieve effective training of the body. In actual use, due to the large weight of the counterweight, the direct descending of the counterweight will have a large impact on the base, which will not only easily damage the base, reduce the service life of the base, but also cause greater noise.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a wall tensioner for rehabilitation, so as to solve the problem that when the counterweight is lowered, the impact force on the base is large, which is easy to damage the base and cause relatively large noise.

In order to achieve the above object, the present invention provides the following technical solutions:

A wall tensioner for rehabilitation, comprising a top board, a base, a guide rod connected between the top board and the base, and a counterweight block slidably connected to the guide rod. In the pulley guided by the pulling rope, the bottom end of the guide rod is slidingly sleeved with a buffer sleeve, the base is provided with a buffer cavity, the buffer sleeve is slidably connected in the buffer cavity, and the buffer cavity is provided with a spring for driving the buffer sleeve to return.

The principle and beneficial effects of this scheme are as follows:

The user can pull the weight block by pulling the pull rope, so that the weight block moves upward, and the limbs can be exercised by overcoming the gravity of the weight block and pulling the weight block to move upward. After releasing the pull rope, the counterweight moves down. When the counterweight moves down, it can push the buffer sleeve to move down, and the spring compresses, thereby buffering the impact force of the counterweight moving down, reducing the impact force of the counterweight on the base, and extending the base. service life, while reducing noise.

Further, an auxiliary buffer mechanism is also included.

Beneficial effects: setting the auxiliary buffer mechanism can further buffer the counterweight, and the buffering effect is better.

Further, the auxiliary buffer mechanism includes an air cushion, an air cushion groove is opened in the base, the opening of the air cushion groove is located on the top surface of the base, the air cushion is arranged in the air cushion groove, a piston is fixed at the bottom of the buffer sleeve, and the piston is slidably connected in the buffer cavity. Connected.

Beneficial effects: The downward movement of the buffer sleeve can drive the piston to move down, the piston squeezes the gas in the buffer cavity into the air cushion, and the air cushion inflates the cushion between the counterweight and the base, which further buffers the counterweight and avoids the need for an air cushion. The weight hits the base directly, further reducing noise.

Further, the counterweight block includes a base block and a weighting block, the base block is provided with a vertical guide hole, and the guide rod is slidably penetrated in the guide hole; the base block is provided with a connection groove, and the connection groove is provided with a fixing hook, The bottom end of the pull rope is connected to the fixing hook; the weight-increasing block is provided with a U-shaped groove for connecting with the guide rod, the U-shaped groove penetrates the weight-increasing block vertically, and the opening of the U-shaped groove is located on one side of the weight-increasing block. The weight block is also provided with a connecting hole for the pulling rope to pass through.

Beneficial effects: In actual use, the weight gain block can be added according to the training intensity, thereby adjusting the overall weight of the weight block, meeting the user's requirements for training weight, and expanding the scope of use; the weight gain block is directly placed on the base block, The guide rod is located in the U-shaped groove and the pull rope is located in the connecting hole; the fixing hook is arranged in the connecting groove to hide the fixing hook and prevent the fixing hook from affecting the placement of the weight gain block.

Further, a lubricating mechanism for applying lubricating oil to the guide rod is provided on both the base block and the weighting block.

Beneficial effects: a lubricating mechanism is arranged to coat the guide rod with lubricating oil, the counterweight can slide more smoothly, and at the same time, the friction force of the guide rod is prevented from being too large, and the service life of the guide rod is prolonged.

Further, the lubricating mechanism includes an oil cavity and a ball, the oil cavity is arranged in the counterweight and the weight-increasing block, the ball is rotatably arranged on the inner wall of the guide hole and the U-shaped groove, and a part of the ball is located in the oil cavity, The guide rod is provided with a chute along its length direction, and the balls are rollingly connected in the chute.

Beneficial effects: when the counterweight moves, the ball rolls in the chute, and the sliding friction between the counterweight and the guide rod is changed to rolling friction, which can reduce the friction when the counterweight slides and slide more smoothly; The lubricating oil is carried into the chute to realize the lubrication of the guide rod, further reducing the friction and making the sliding smoother; during transportation and carrying, the lubricating oil in the oil cavity can be discharged to reduce the weight of the counterweight and facilitate transportation.

Description of drawings

1 is a front view of Embodiment 1 of the present invention;

2 is a partial longitudinal cross-sectional view of the base in Embodiment 1 of the present invention;

3 is a longitudinal cross-sectional view of a foundation block in Embodiment 1 of the present invention;

4 is a schematic structural diagram of a weight-increasing block in Embodiment 1 of the present invention;

FIG. 5 is a transverse cross-sectional view of the weighting block in the second embodiment of the present invention.

Detailed ways

The following is further described in detail by specific embodiments:

The reference signs in the drawings include: top plate 1, pulley 2, pull rope 3, pull ring 4, guide rod 5, base block 6, air cushion 7, buffer sleeve 8, base 9, piston 10, spring 11, buffer cavity 12. Ball 13, oil cavity 14, U-shaped groove 15, connecting hole 16, weighting block 17, cam 18, gear 19, rack 20.

Example 1

As shown in Figures 1 to 4, a rehabilitation wall tensioner includes a top plate 1, a base 9, a guide rod 5, a counterweight and a pull rope 3, and four guide rods are vertically fixed between the top plate 1 and the base 9 5. Two guide rods 5 are a set, and each set of guide rods 5 is slidably connected with a set of counterweight blocks. Each set of counterweight blocks includes a base block 6 and several weight-increasing blocks 17 . The base block 6 and the weight-increasing block 17 show their own weights. The base block 6 is slidably connected to the guide rod 5 , and the weight-increasing blocks 17 Removably connected to the guide rod 5. Specifically, the base block 6 is provided with two vertical guide holes, the two guide rods 5 of a group are respectively inserted into the two guide holes, and the weighting block 17 is provided with two U-shaped grooves 15. The slot 15 is slidably connected to the guide rod 5 , the U-shaped slot 15 penetrates the weighted block 17 in the vertical direction, the opening of the U-shaped slot 15 extends to one side of the weighted block 17 , and a connecting hole is opened between the U-shaped grooves 15 16. Place the weighted block 17 on the base block 6, so that the guide rod 5 is snapped into the U-shaped groove 15, and the pull rope 3 is located in the connection hole 16, and the weighted block 17 can be installed.

The top of the base block 6 is provided with a connecting groove (not shown in the figure), a fixed hook is pre-embedded in the connecting groove, a connecting hook is fixed at the bottom end of the pull rope 3, the connecting hook is hooked on the fixed hook, and the free end of the pull rope 3 is fixed with a connecting hook. Pulling ring 4, the bottom of top plate 1 is rotatably installed with pulley 2 for guiding the pull rope 3, and the pull rope 3 is tensioned on the pulley 2.

Both the base block 6 and the weighting block 17 are provided with an oil cavity 14 for containing lubricating oil, and an oil pipe (not shown in the figure) is connected to the side of the oil cavity 14, and a valve is installed on the oil pipe. Two rows of balls 13 are rotatably installed on the inner wall of the guide hole and the U-shaped groove 15, and two chutes are opened on the left and right sides of the guide rod 5 in the axial direction. A part of the balls 13 is located in the oil cavity 14 and is in contact with the lubricating oil.

The bottom end of each guide rod 5 is slidably sleeved with a buffer sleeve 8 , the bottom end of the buffer sleeve 8 is glued and fixed with a piston 10 , and four buffer cavities 12 are opened in the base 9 , and the four pistons 10 are respectively slidably connected to the four buffers In the cavity 12, the bottom ends of the four guide rods 5 are anchored in the buffer cavity 12, the guide rod 5 is sealed and slidingly connected with the piston 10, the guide rod 5 is sleeved with a spring 11, and the two ends of the spring 11 are respectively connected with the piston 10 and the buffer cavity 12. bottom out. An air cushion groove is opened between the two buffer cavities 12 where each group of guide rods 5 is located, the opening of the air cushion groove is upward, and the air cushion 7 is glued and fixed in the air cushion groove. The two buffer cavities 12 where each group of guide rods 5 are located They are all communicated with the air cushion 7 in the middle.

The specific implementation process is as follows:

In the initial state, the weight block is located at the bottom of the guide rod 5. When in use, pull the pull rope 3 to pull up the weight block, release the pull rope 3 to lower the weight block, and repeat the exercise to train the limbs. The base block 6 is always slidably connected to the guide rod 5, and in actual use, the number of weight-increasing blocks 17 can be increased or decreased according to the training intensity, so as to achieve the training purpose.

After releasing the counterweight, the counterweight slides down under the action of gravity, and the buffer sleeve 8 protrudes above the base 9 in the initial state. The spring 11 is compressed, the buffer sleeve 8 drives the piston 10 on it to squeeze the gas in the buffer cavity 12, and the impact force of the counterweight sliding down is buffered by the buffer sleeve 8, the gas and the spring 11, so that it falls to the bottom relatively slowly on seat 9. At the same time, the gas in the buffer cavity 12 is squeezed into the air cushion 7, the air cushion 7 is inflated and cushioned on the surface of the base 9, and the counterweight reaches the base 9 and then falls on the air cushion 7, which buffers the counterweight again. , to prevent the counterweight from directly hitting the base 9, prolonging the service life of the counterweight and the base 9, and reducing the noise generated by the impact.

When the counterweight slides along the guide rod 5, the balls 13 on it can roll in the chute on the guide rod 5, turning the sliding friction between the guide rod 5 and the counterweight into rolling friction, effectively reducing the frictional force. The counterweight slides more smoothly, also reduces the wear of the guide rod 5 and prolongs its service life. Since a part of the balls 13 is located in the oil cavity 14, the balls 13 can carry lubricating oil into the chute when rolling, so as to lubricate the guide rod 5, further reduce friction, and make the counterweight slide more smoothly. When carrying and transporting the present invention, the valve can be opened to discharge the lubricating oil in the oil cavity 14, the weight of the base block 6 and the weighting block 17 can be reduced, and the transportation and carrying are convenient.

Embodiment 2

The difference between this embodiment and the first embodiment is that, as shown in FIG. 5 , a cam 18 is arranged to rotate on the left side of the U-shaped groove 15 . The gear 19 is meshed with a rack 20 on the outside of the gear 19 .

When installing the weighting block 17, first pull the rack 20 outward, the rack 20 drives the gear 19 and the cam 18 to rotate, so that the cam 18 is released from the U-shaped groove 15, and the guide rod 5 can be smoothly inserted into the U-shaped groove 15 Inside; the guide rod 5 is snapped into the U-shaped groove 15 and the rack 20 is pushed back, the gear 19 and the cam 18 are reversed, and the cam 18 is pressed against the guide rod 5, thereby positioning the guide rod 5, raising the guide rod 5 and increasing the The connection stability of the weight block 17 is improved, thereby improving the installation stability of the weight increase block 17 .

The above descriptions are only embodiments of the present invention, and common knowledge such as well-known specific structures and characteristics in the solution are not described too much here. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effectiveness and utility of patents. The scope of protection claimed in this application shall be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (4)

1. A wall tensioner for rehabilitation, including a top plate, a base, a guide rod connected between the top plate and the base, and a counterweight block slidably connected to the guide rod, a pull rope is fixed on the top of the counterweight block, and a rotating set below the top plate is useful. The pulley for guiding the pulling rope is characterized in that: the bottom end of the guide rod is slidingly sleeved with a buffer sleeve, a buffer cavity is opened in the base, the buffer sleeve is slidably connected in the buffer cavity, and the buffer cavity is provided with a buffer for driving the buffer sleeve to reset. spring; also includes an auxiliary buffer mechanism; the auxiliary buffer mechanism includes an air cushion, an air cushion groove is opened in the base, the opening of the air cushion groove is located on the top surface of the base, the air cushion groove is located under the counterweight block, the air cushion is arranged in the air cushion groove, and the bottom of the buffer sleeve is fixed with a The piston is slidably connected in the buffer cavity, the buffer cavity is communicated with the air cushion, and the air cushion cushions between the counterweight block and the base after being inflated and expanded. 2 . The wall tensioner for rehabilitation according to claim 1 , wherein the counterweight block comprises a base block and a weighting block, the base block is provided with a vertical guide hole, and the guide rod is slidably penetrated through the guide hole. 3 . Inside; the base block is provided with a connecting groove, and the connecting groove is provided with a fixing hook, and the bottom end of the pull rope is connected to the fixing hook; In the weighting block, the opening of the U-shaped groove extends to one side of the weighting block, and the weighting block is also provided with a connecting hole for the pulling rope to pass through. 3 . The wall tensioner for rehabilitation according to claim 2 , wherein a lubricating mechanism for coating the guide rod with lubricating oil is provided on both the base block and the weighting block. 4 . 4. A rehabilitation wall tensioner according to claim 3, characterized in that: the lubricating mechanism comprises an oil cavity and balls, the oil cavity is provided in the base block and the weighting block, and the guide hole and the U-shaped groove are provided with the oil cavity. The inner wall is rotatably provided with the balls, a part of the balls is located in the oil cavity, the guide rod is provided with a chute along its length direction, and the balls are rollingly connected in the chute.

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