CN201365988Y - Knee joint buffer structure - Google Patents

Abstract

The utility model discloses a knee joint buffer structure, wherein the upper part of the knee bearing is connected to the upper end of the outer connecting rod, and the lower part is connected to the upper end of the upper connecting rod; the upper through hole of the brake block is connected to the lower end of the upper connecting rod, and the lower part is connected to the connecting part, and the upper rear end is provided with a positioning hole; the hydraulic cylinder is arranged on the inner side of the brake block, and the upper end is connected to the inner side of the knee bearing; the lower end of the connecting part can be connected to the prosthetic shank, and the upper rear end is penetrated by a positioning shaft; the upper through hole of the outer connecting rod is arranged on the upper side of the knee bearing, and the upper through hole of the connecting part is arranged on the lower side; the inner side of the connecting part is provided with an adjusting screw, a piston tube, an elastic body and a piston, and when the knee joint is slightly bent, the elastic body and the piston cooperate with the shockproof block to provide a buffering reaction force to the lower edge of the brake block, which can not only avoid the impact force of contacting the ground, but also make the sole of the foot cooperate with the inclination of the ground.

Description

Knee Cushioning Structure

technical field

The utility model relates to a knee joint cushioning structure, in particular to a connecting part connecting a prosthetic knee joint and a prosthetic calf, which uses a piston to cooperate with an elastic body, so that the prosthetic user can adapt to road conditions when standing slightly bent or walking.

Background technique

With the mature development of medical and mechanical structures, and in conjunction with the action methods of different mechanisms, people with disabilities gradually focus on simulating human joint muscles in order to achieve the most natural mobility in terms of rehabilitation and improvement of mobility. In terms of walking status, the human foot joints must cooperate with the road conditions from the hip joint down, such as stairs, slopes, wet slippery, and uneven road conditions, to maintain the balance of contact with the ground. For the control of the knee joint, it is difficult for the lower leg to cooperate with the movement above the knee joint. As a result, the user of the prosthetic limb cannot feel the feedback of the road surface when walking. Moreover, the impact force of the contact with the ground is likely to make the users of the prosthesis feel uncomfortable, so further improvement is urgently needed.

Contents of the invention

The main purpose of this utility model is to improve the commonly used prosthetic knee joint. A buffer device is provided at the connection part, so that the prosthetic user can adapt to the road conditions and reduce the impact force when walking or standing.

The purpose of this utility model is achieved by adopting the following technical means: a knee joint buffer structure, the upper end of the outer link is connected to the upper end of the knee bearing seat, and the upper end of the upper link is connected to the lower part; In the connecting part, there is a positioning hole at the upper rear end; the hydraulic cylinder is placed inside the brake block, and the upper end is connected to the inner side of the knee seat; the lower end of the connecting part can be connected to the prosthetic calf, and the upper rear end passes through the positioning shaft; The hole is set on the upper part of the knee support, and the lower part is set on the upper part of the connecting part. Because the user of the prosthetic limb cannot feel the feedback of the road surface when walking, not only the sole of the foot and the ground form an unnatural angle, but also the impact force of the contact with the ground It will also make the user of the prosthesis feel uncomfortable. Therefore, the utility model arranges the piston tube, piston, elastic body and adjustment screw on the inner side of the connecting part, and makes the piston abut against the lower edge of the brake block. When the knee joint is slightly When bending, the brake block rotates slightly backwards, and the lower edge is supported by the elastic body and the piston, forming a buffer reaction force, so that when the user of the prosthetic limb is walking or slightly bending, the sole of the foot can adapt to the road surface conditions, and its contact It can also reduce the impact force when on the ground to achieve a more comfortable and natural gait.

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Description of drawings

Fig. 1 is the perspective view of the utility model;

Fig. 2 is the three-dimensional system diagram of the present utility model;

Fig. 3 is a schematic cross-sectional view of the utility model.

Description of main component symbols:

1 connection part 21 upper axis

11 Adjusting screw 22 Lower axis

12 Piston tube 3 Brake block

13 Elastomer 30 Positioning hole

14 Piston 31 Lower edge of brake block

15 positioning shaft perforation 4 hydraulic cylinder

16 Positioning shaft 5 Upper link

17 Anti-vibration block 6 Knee seat

2 outer links

Detailed ways

The structure and function of the present utility model will be described below in terms of the preferred embodiment, and after a detailed explanation with the drawings, the understanding of the utility model will be increased; the utility model is a knee joint cushioning structure, please refer to Figures 1 to 3 As shown in the middle picture, it mainly includes the connecting part 1, the outer connecting rod 2, the brake block 3, the hydraulic cylinder 4, the upper connecting rod 5, and the knee seat 6, among which;

Please refer to Fig. 1 and Fig. 2, there are perforations on the top and bottom of the knee support 6, the top perforations are connected to the upper end of the outer link 2, and the bottom perforations are connected to the upper end of the upper link 5; the top and bottom of the brake block 3 are provided with perforations , the upper end is connected to the lower end of the upper link 5, the lower end is connected to the upper end of the connecting part 1, the hydraulic cylinder 4 is arranged on the inner side of the brake block 3, and the upper end is connected to the inner side of the knee seat 6; the upper end of the connecting part 1 is provided with a perforation, and the lower end is connected to the lower end of the prosthetic leg. The upper rear end is provided with a positioning shaft perforation 15, which is used to pass through the positioning shaft 16; the upper part of the outer connecting rod 2 is provided on the upper part of the knee support 6, and the upper shaft center 21 is provided, and the lower part is provided on the upper part of the connecting part 1. , The lower shaft center 22 is worn; the shockproof block 17 is arranged between the brake block 3 and the connecting part 1; the shockproof block 17 is arranged between the knee bearing seat 6 and the upper connecting rod 5.

Please refer to Figure 2 and Figure 3, the lower part of the connecting part 1 can be connected to the lower leg of the prosthetic limb, and the inside of the connecting part 1 is provided with an adjustment screw 11, a piston tube 12, an elastic body 13, and a piston 14, and the piston 14 is against the bottom of the brake block Edge 31, when the knee joint is slightly bent or the sole of the foot suddenly touches the ground, the brake block 3 rotates according to the lower axis 22 within the range of the positioning shaft 16 and the positioning hole 30, so that the piston 14 moves downward, and the elastic body 13 compresses Cooperate with the anti-vibration block 17 provided on each contact surface, provide the reaction force of the brake block 3, and slow down the impact force when touching the ground, and allow the soles of the feet to match the inclination of the ground to achieve a comfortable and natural gait; the above , is only a preferred implementation example of the utility model, and should not be used as limiting the scope of implementation of the utility model, and all equal changes or modifications made according to the patent scope of the utility model should still belong to the scope covered by the utility model patent Inside.

Claims (4)

1. knee joint buffer structure, it comprises;

One knee bearing is provided with two perforation, and last square punch connects the outside connecting rod upper end, wears the axle center, and following square punch connects goes up small end;

One brake block is provided with two perforation, and the top connects goes up the connecting rod lower end, and the below is connected in the connecting portion upper end, and the locating hole of rear end, top can wear locating shaft;

One oil hydraulic cylinder, upper end are arranged at knee bearing inboard, and the below is arranged at the brake block inboard;

A junction, the top is provided with perforation, and the lower end can connect the artifucial limb shank, and the rear end, top is provided with the locating shaft perforation, in order to wear locating shaft;

Two outside connecting rods, top are arranged at the last square punch of knee bearing, wear the axle center, and the below is arranged at the last square punch of connecting portion, wears down the axle center;

It is characterized in that: the connecting portion inboard is provided with piston tube, the piston tube upper end is provided with piston, and the lower end is adjusted between screw and the piston and is provided with elastomer for adjusting screw, piston is contacted with the brake block lower edge, utilizes elastomer and piston to provide buffered counteracting force to the brake block lower edge.

2. knee joint buffer structure as claimed in claim 1 is characterized in that: be provided with shock-proof block between brake block and the connecting portion.

3. knee joint buffer structure as claimed in claim 1 is characterized in that: the knee bearing reaches to go up between the connecting rod and is provided with shock-proof block.

4. knee joint buffer structure as claimed in claim 1 is characterized in that: brake block rotation amplitude is directly proportional with the size of locating hole.

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