Labor-saving knee protection device for assisting person in kneeling and sitting activities

Abstract

The utility model belongs to the technical field of protection equipment, and relates to a labor-saving knee protection device for assisting people in kneeling and sitting activities, which comprises a pair of parallel hook-shaped supports, each support is sequentially provided with a knee supporting section, a connecting section and a hip supporting section from front to back, the knee supporting section is provided with a knee pad, and the hip supporting section is provided with a hip pad. The hip supporting section is provided with a hip pad, a transverse fixing shaft is arranged at the front end of the support, the knee pad is hinged to the fixing shaft, the front end of the knee pad exceeds the support and extends downwards to form a front fulcrum, and a rear fulcrum is formed at the bottom of the support between the knee supporting section and the connecting section. The knee supporting section is obliquely distributed downwards from front to back, and the front supporting point and the rear supporting point are in contact with the ground to form a double-point supporting structure. The labor-saving knee protection device for assisting the person in kneeling and sitting activities is used for assisting the person in keeping a sitting posture for a long time, and has the advantages of being free in movement and flexible in getting up.

Description

Technical Field

[0001] This utility model belongs to the technical field of protective equipment, and relates to a labor-saving knee protection device that assists people in kneeling activities. Background Technology

[0002] Currently, ground search and rescue personnel and firefighters often maintain a kneeling position for extended periods during ground search and rescue operations. To protect their knees, they typically wear knee braces. However, prolonged kneeling puts the body's weight directly on the calves and ankles through the buttocks, straining the knee joint and hindering blood circulation in the feet. Frequent squatting stretches the ligaments of the knee joint to their maximum bending limit, and the surrounding myofascial tissues are also stretched to their limit. Simultaneously, the body weight presses on the knee joint, placing immense pressure on it. This prolonged bending and pressure posture increases the risk of cartilage damage and tearing within the knee joint, and may even lead to lower limb thrombosis.

[0003] Chinese utility model patent application CN216674782U (publication date: 2022.06.07) discloses a knee pad device that facilitates kneeling, including two side-by-side brackets in a J-shape. A limiting plate is movably connected between the upper ends of the brackets, and a kneeling pad is installed on the limiting plate. A fixing plate is fixedly connected between the lower ends of the brackets, and a seat cushion is installed on the fixing plate. Both the kneeling pad and the seat cushion are equipped with straps.

[0004] However, in actual use, it was found that because the knee pad of the aforementioned knee brace is fixed to the limiting plate, the angle of the knee and joint will change when a person moves. After tightening the knee pad, the person's movement will be restricted. Moreover, it is not flexible to stand up after binding the knee brace. The device lacks a mechanical fulcrum design, and the legs and feet need to exert force alone when standing up, which increases the burden on the joints. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a knee-saving and protective device that assists individuals in kneeling and sitting activities. It helps individuals maintain a seated posture for extended periods and offers advantages such as freedom of movement and flexibility in getting up.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A knee-saving device for assisting kneeling activities includes a pair of parallel hook-shaped supports. From front to back, each support has a knee support section, a connecting section, and a hip support section. The knee support section has a knee pad, and the hip support section has a hip pad. A horizontal fixed shaft is located at the front end of each support. The knee pad is hinged to the fixed shaft, and its front end extends beyond the support and downwards to form a front fulcrum. A rear fulcrum is formed at the bottom of the support between the knee support section and the connecting section. In a kneeling position, the knee support section is inclined downwards from front to back, and the front and rear fulcrums contact the ground to form a double-point support structure.

[0008] In the aforementioned knee-saving and knee-protecting device that assists in kneeling activities, the knee pad is provided with an adjustable knee-mounted strap that can be fixed to the lower leg, and the hip pad is provided with an adjustable ankle-mounted strap that can be fixed to the ankle.

[0009] In the aforementioned knee-saving and knee-protecting device that assists in kneeling activities, the bracket is made of an integral aluminum alloy bent tube, and a horizontally arranged reinforcing tube is provided between the brackets. A hip support base is fixed to the rear end of the bracket, and the hip pad is fixed on the hip support base.

[0010] In the aforementioned knee-saving device that assists in kneeling activities, the support is made of an aluminum alloy tube with a diameter of 20mm and a wall thickness of 2mm.

[0011] In the above-mentioned knee-saving device for assisting personnel in kneeling activities, preferably, when kneeling, the angle between the knee support section and the ground is 1-5°.

[0012] In the above-mentioned knee-saving device for assisting kneeling activities, the two ends of the fixed shaft are fixedly connected to the inner side of the bracket, and the back of the knee pad is provided with a pair of saddle-shaped seats that are hinged to the fixed shaft. A rotating support is provided between the saddle-shaped seats and the fixed shaft. The saddle-shaped seats are clearance-fitted with the fixed shaft and are fastened to the knee pad by fasteners. Preferably, the bottom of the knee pad is provided with a fixing plate, and the fasteners are bolts that are screwed to the fixing plate.

[0013] In the aforementioned knee-saving device for assisting kneeling activities, the rotating support can be a bushing or a bearing. Preferably, the rotating support is a bearing. The inner ring of the bearing is interference-fitted with the fixed shaft. A retaining ring of an axial limiting bearing is fitted on the fixed shaft on both sides of the inner ring of the bearing. The saddle-shaped seat is covered on the outer ring of the bearing and interference-fitted with it. The bottom of the saddle-shaped seat is provided with an inner groove that matches the outer ring of the bearing. The two side walls of the inner groove are respectively in contact with the two end faces of the outer ring of the bearing.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] 1. This utility model provides a labor-saving knee protection device to assist people in kneeling activities, helping them to kneel for extended periods. The knee-bending and rising movements of this utility model are smooth and natural, with the support structure causing no discomfort during the movements. Furthermore, by rationally transferring body weight and distributing pressure, it avoids pressure on the ankles and knee joints, and also prevents the knee joints from directly contacting the ground, thus preventing injuries. The rising movement utilizes leverage at a fulcrum to achieve an assistive effect, reducing discomfort in the toe joints.

[0016] 2. The knee pad of this utility model is hinged to the fixed shaft. When kneeling, the knee pad can automatically adjust to a suitable angle by rotating, so that the bottom of the knee pad fits the ground better and kneeling is more comfortable. After standing up, when the human knee moves, the knee pad can rotate the angle accordingly without restricting the human body's movement.

[0017] 3. This utility model further optimizes the hinge structure of the knee pad. The bearing is axially limited on the fixed shaft by the retaining ring, and then an inner groove is set at the bottom of the saddle-shaped seat. This not only allows for better cooperation with the bearing, but also forms an axial limiting structure of the saddle-shaped seat, thereby preventing the knee pad from moving left and right. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model when kneeling;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model after it has stood up;

[0020] Figure 3 This is a schematic diagram of the structure of the saddle-shaped seat and the fixed shaft hinged together in this utility model;

[0021] Reference numerals: 1. Bracket; 11. Knee support section; 12. Connecting section; 13. Hip support section; 14. Fixing axis; 15. Rear pivot point; 16. Reinforcing tube; 17. Retaining ring; 2. Knee pad; 21. Front pivot point; 22. Adjustable knee support strap; 23. Saddle seat; 24. Inner groove; 3. Hip pad; 31. Adjustable ankle support strap; 4. Bearing. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 :

[0023] A knee-saving device for assisting kneeling activities includes a pair of parallel hook-shaped supports 1. The supports 1 are provided with a knee support section 11, a connecting section 12, and a hip support section 13 from front to back. The knee support section 11 is provided with a knee pad 2, and the hip support section 13 is provided with a hip pad 3. The front end of the supports 1 is provided with a transverse fixed shaft 14. The knee pad 2 is hinged to the fixed shaft 14. The front end of the knee pad 2 extends beyond the supports 1 and downward to form a front fulcrum 21. The bottom of the supports 1 between the knee support section 11 and the connecting section 12 forms a rear fulcrum 15. In the kneeling position, the knee support section 11 is inclined downward from front to back, and the front fulcrum 21 and the rear fulcrum 15 contact the ground to form a double-point support structure.

[0024] Comparison Appendix Figure 1 When kneeling, the body naturally bends the knees and sits back. The front fulcrum 21 at the knee and the rear fulcrum 15 at the ankle touch the ground first, forming a stable support point. As the buttocks naturally fall, they contact the seat cushion on the support 1. Through the support of the support 1, the weight transmitted from the buttocks is evenly transferred to the ground-touching parts on both sides of the toes (i.e., the rear fulcrum 15) and the knee pad 2 in front of the knee (i.e., the front fulcrum 21). The body weight is completely transferred to the internal stress of the support 1, and further transferred to the ground through the bending structure, so that the knees and heels bear very little weight pressure, avoiding pressure on the joint ligaments and joint bones.

[0025] When standing up, the two-point support structure of front fulcrum 21 and rear fulcrum 15 is formed when kneeling. When the knee is raised, the support 1 will rotate around the rear fulcrum 15 to form a lever structure. Since the contact points of the support 1 on both sides of the toes form fulcrums, the kneeling posture can be completed by pushing off the ground with the help of the "lever principle".

[0026] Comparison Appendix Figure 2 After standing up, because the knee pad 2 and the fixed shaft 14 are hinged, the knee pad 2 does not restrict the movement of the knee when it moves, and the human body can easily move to the next kneeling point and kneel again.

[0027] When necessary, the device in this embodiment can also be used in pairs, strapped to the left and right legs respectively.

[0028] The knee pad 2 is equipped with an adjustable knee strap 22 that can be fixed to the lower leg, and the hip pad 3 is equipped with an adjustable ankle strap 31 that can be fixed to the ankle. Before use, place the lower leg in the gap between the two supports 1, and then securely fasten the device to the lower leg using the adjustable knee strap 22 and the adjustable ankle strap 31.

[0029] The aforementioned bracket 1 is made of an integral aluminum alloy bent tube. A horizontally arranged reinforcing tube 16 is provided between the brackets 1. A hip support base is fixed to the rear end of the bracket 1, and the hip pad 3 is fixed on the hip support base.

[0030] In this embodiment, the bracket 1 is made of aluminum alloy tube with a diameter of 20mm and a wall thickness of 2mm.

[0031] Preferably, when kneeling, the angle α between the knee support segment 11 and the ground is 1-5° to better form a two-point support structure.

[0032] In this embodiment, referring to the attached... Figure 2 and attached Figure 3 The specific hinge structure between the fixed shaft 14 and the knee pad 2 is as follows: both ends of the fixed shaft 14 are fixedly connected to the inner side of the bracket 1, and a pair of saddle-shaped seats 23 hinged to the fixed shaft 14 are provided on the back of the knee pad 2. A rotating support is provided between the saddle-shaped seats 23 and the fixed shaft 14. The saddle-shaped seats 23 and the fixed shaft 14 are clearance-fitted and fastened to the knee pad 2 by fasteners. Preferably, in order to install more firmly, a fixing plate is provided at the bottom of the knee pad 2, and the fasteners are bolts that are screwed to the fixing plate.

[0033] Furthermore, the rotating support can be selected as a bushing or a bearing 4. Preferably, the rotating support is a bearing 4. The inner ring of the bearing 4 is interference-fitted with the fixed shaft 14. The fixed shaft 14 on both sides of the inner ring of the bearing 4 is provided with a retaining ring mounting groove. The retaining ring 17 of the axial limiting bearing 4 is fitted in the retaining ring mounting groove. The saddle-shaped seat 23 covers the outer ring of the bearing 4 and is interference-fitted with it. The bottom of the saddle-shaped seat 23 is provided with an inner groove 24 that matches the outer ring of the bearing 4. The two side walls of the inner groove 24 are respectively in contact with the two end faces of the outer ring of the bearing 4. The inner concave side forms an axial limiting structure between the saddle-shaped seat 23 and the bearing 4.

[0034] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A labor-saving knee protection device for assisting personnel in kneeling activities, comprising a pair of hook-shaped supports (1) arranged in parallel, the supports (1) being sequentially provided from front to back with a knee supporting section (11), a connecting section (12) and a hip supporting section (13), the knee supporting section (11) being provided with a knee pad (2), and the hip supporting section (13) being provided with a hip pad (3), characterized in that, The front end of the support (1) is provided with a transverse fixing shaft (14), the knee pad (2) is hinged on the fixing shaft (14), the front end of the knee pad (2) extends beyond the support (1) and downward to form a front supporting point (21), the bottom of the support (1) between the knee supporting section (11) and the connecting section (12) forms a rear supporting point (15), in the kneeling state, the knee supporting section (11) is downwardly inclined from front to back, the front supporting point (21) and the rear supporting point (15) are in contact with the ground to form a two-point supporting structure.

2. The labor-saving knee protector for assisting a person to kneel down according to claim 1, wherein, An adjustable fixing belt (22) for fixing the knee part of the lower leg is arranged on the knee pad (2), and an adjustable fixing belt (31) for fixing the ankle part of the foot is arranged on the hip pad (3).

3. The labor-saving knee protector for assisting a person to kneel down according to claim 2, wherein, The support (1) is made of an integral aluminum alloy bent pipe, a reinforcing pipe (16) is arranged transversely between the supports (1), a hip supporting base is fixed to the rear end of the support (1), and the hip pad (3) is fixed on the hip supporting base.

4. The labor-saving knee protector for assisting a person to kneel down according to claim 1, wherein, In the kneeling state, the included angle between the knee supporting section (11) and the ground is 1-5°.

5. The labor-saving knee protector for assisting a person to kneel down according to claim 1, wherein, Both ends of the fixing shaft (14) are fixedly connected with the inner side of the support (1), a pair of saddle-shaped seats (23) hinged with the fixing shaft (14) are arranged on the back of the knee pad (2), a rotating support is arranged between the saddle-shaped seat (23) and the fixing shaft (14), the saddle-shaped seat (23) is in clearance fit with the fixing shaft (14) and is fastened and connected with the knee pad (2) through fasteners.

6. The labor-saving knee protector for assisting a person to kneel down according to claim 5, wherein, The rotating support is a bearing (4), the inner ring of the bearing (4) is in interference fit with the fixing shaft (14), the fixing shaft (14) on both sides of the inner ring of the bearing (4) is sleeved with a flange (17) of an axial limiting bearing (4), the saddle-shaped seat (23) is arranged on the outer ring of the bearing (4) and is in interference fit with the outer ring, the bottom of the saddle-shaped seat (23) is provided with an inner groove (24) matched with the outer ring of the bearing (4), and the two side walls of the inner groove (24) are respectively in contact and connection with the two side end faces of the outer ring of the bearing (4).

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