Five-axis geometric lock hydraulic knee joint

Abstract

The utility model discloses a five-axis geometric lock hydraulic knee joint which comprises a supporting hemisphere and a main supporting shaft penetrating through the middle of the supporting hemisphere, a rotating supporting shaft is arranged below the main supporting shaft, and a guiding supporting shaft is arranged below the rotating supporting shaft. Two pressure-resistant supporting shafts which are correspondingly distributed are arranged above the rotating supporting shaft, a supporting column is arranged between the main supporting shaft and the rotating supporting shaft, hydraulic rods and hydraulic cylinders are arranged between the pressure-resistant supporting shafts and the main supporting shaft, at least two guide grooves are formed in the supporting hemisphere, and the supporting hemisphere is provided with at least two guide rods. The hydraulic rod extends into the guide groove, and the hydraulic rod and the supporting column are both rotationally connected with the main supporting shaft. According to the utility model, under the combined use function of the main support shaft, the rotary support shaft, the guide support shaft and the two pressure-resistant support shafts, the device has the effect of a five-shaft geometric lock, and the support stability of the device in use is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of artificial joint technology, and in particular to a five-axis geometric locking hydraulic knee joint. Background Technology

[0002] An artificial joint is an artificial organ used to replace a diseased or damaged natural joint. It is mainly implanted into the human body through surgery to restore joint function, reduce pain, and improve the patient's quality of life.

[0003] The knee joint is the largest and most complex joint in the human body, mainly serving as a support for movement. Through artificial manufacturing, it can replace damaged joints and ensure people's normal life. However, existing artificial joints, in actual use, can ensure stability in their movement range through multi-axis geometric locks. But because the connecting parts are too independent and cannot provide mutual support, the support performance of the device is limited, affecting the stability and adjustability of its strength when used by wearers of different weights.

[0004] Therefore, we provide a five-axis geometric locking hydraulic knee joint. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a five-axis geometric locking hydraulic knee joint, thereby improving the device's support performance.

[0006] In view of this, the present invention provides a five-axis geometric locking hydraulic knee joint, including a supporting hemisphere and a main support shaft passing through the middle of the supporting hemisphere. A rotating support shaft is provided below the main support shaft, a guide support shaft is provided below the rotating support shaft, and two correspondingly distributed anti-compression support shafts are provided above the rotating support shaft. A support column is provided between the main support shaft and the rotating support shaft. A hydraulic rod and a hydraulic cylinder are provided between the anti-compression support shaft and the main support shaft. A transmission arm is provided between the anti-compression support shaft and the guide support shaft. At least two guide grooves are provided on the supporting hemisphere. The hydraulic rod extends into the guide grooves, and both the hydraulic rod and the support column are rotatably connected to the main support shaft.

[0007] Preferably, at least two support grooves are provided on the outer side of the main support shaft, and the support hemisphere is located between the two support grooves. A rotating ring is rotatably connected inside the support groove, and the rotating ring is inclined at the same angle as the support groove.

[0008] Preferably, the rotating ring is sleeved on the outside of the main support shaft, and the upper end of the support column is installed on the outside of the rotating ring. Ball bearings are rolled on both sides of the rotating ring, and the support groove has limiting ring grooves on both sides for the rolling support of the ball bearings.

[0009] Preferably, the lower end of the support column is installed on the outside of the rotating support shaft, and rotating support frames are rotatably connected to both ends of the rotating support shaft. Fixed support seats for support are simultaneously connected to the outside of the two rotating support frames.

[0010] Preferably, at least three support rings are fixedly sleeved on the outer side of the main support shaft, and positioning balls are installed on both sides of the three support rings, and the support rings and the positioning balls are all located inside the support hemisphere.

[0011] Preferably, the hydraulic rods are mounted on the outer surfaces of the two outer support rings, and at least two hydraulic rods are mounted on the outer surface of each support ring. The two hydraulic rods are symmetrically distributed and are installed in the hydraulic cylinder in a piston-like manner.

[0012] Preferably, the two hydraulic cylinders on the same side are simultaneously installed on the outside of the pressure-resistant support shaft on the same side, and the pressure-resistant support shaft is rotatably installed between the rotating support frames on both sides.

[0013] Preferably, a liquid storage cylinder is provided between the two support columns, and a plurality of connecting heads are provided on the outside of the liquid storage cylinder. A connecting bend is provided on the connecting head, the connecting bend is installed on the outside of the hydraulic cylinder, and the hydraulic cylinder is in communication with the inside of the connecting bend.

[0014] Preferably, there are at least two transmission arms, which are symmetrically distributed and fixedly connected to two anti-compression support shafts respectively. The two transmission arms are rotatably connected to the guide support shaft through a rotating cylinder, and the guide support shaft is rotatably installed between the rotating support frames on both sides.

[0015] Compared with the prior art, this utility model provides a five-axis geometric locking hydraulic knee joint, which has the following beneficial effects:

[0016] This invention, through the combined use of a main support shaft, a rotating support shaft, a guide support shaft, and two anti-compression support shafts, enables the device to achieve a five-axis geometric lock effect, further ensuring its stability during use.

[0017] This invention allows for adjustment of the support strength between the hydraulic rods on both sides and the hydraulic cylinder by adjusting the amount of hydraulic oil inside the hydraulic cylinder. This enables the device to provide support adjustment for users of different weights, ensuring stability and reliability for use in various environments.

[0018] This invention allows the hydraulic oil in the reservoir to move accurately into the hydraulic cylinder via the connecting head and the connecting bend, by adjusting the control valve on the connecting head. By opening the connecting head at different positions, the hydraulic oil inside the hydraulic cylinder can be adjusted accordingly. Thus, by increasing or decreasing the amount of hydraulic oil in the hydraulic cylinder, its supporting strength can be easily adjusted.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 An exploded view of a five-axis geometric lock hydraulic knee joint proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the overall front view structure of a five-axis geometric locking hydraulic knee joint proposed in this utility model;

[0022] Figure 3 This is a side view of a five-axis geometric locking hydraulic knee joint proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the overall support shaft connection method of a five-axis geometric lock hydraulic knee joint proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the supporting hemisphere of a five-axis geometric locking hydraulic knee joint proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of the hydraulic component of a five-axis geometric locking hydraulic knee joint proposed in this utility model.

[0026] In the diagram: 1. Support hemisphere; 101. Guide groove; 2. Main support shaft; 201. Support inclined groove; 3. Rotating support shaft; 4. Compression support shaft; 5. Guide support shaft; 501. Transmission arm; 6. Support ring; 601. Positioning ball; 7. Rotating ring; 701. Ball bearing; 702. Limiting ring groove; 8. Hydraulic rod; 801. Hydraulic cylinder; 802. Connecting bend; 803. Connecting head; 804. Liquid storage cylinder; 9. Support column; 10. Rotating support frame; 11. Fixed support base. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Example 1: A five-axis geometric locking hydraulic knee joint, such as Figure 1 - Figure 6 As shown, it includes a supporting hemisphere 1 and a main supporting shaft 2 passing through the middle of the supporting hemisphere 1. A rotating supporting shaft 3 is provided below the main supporting shaft 2, and a guide supporting shaft 5 is provided below the rotating supporting shaft 3. Two pressure-resistant supporting shafts 4 are provided above the rotating supporting shaft 3 in a corresponding arrangement. A supporting column 9 is provided between the main supporting shaft 2 and the rotating supporting shaft 3. A hydraulic rod 8 and a hydraulic cylinder 801 are provided between the pressure-resistant supporting shaft 4 and the main supporting shaft 2. A transmission arm 501 is provided between the pressure-resistant supporting shaft 4 and the guide supporting shaft 5. At least two guide grooves 101 are provided on the supporting hemisphere 1. The hydraulic rod 8 extends into the guide groove 101, and both the hydraulic rod 8 and the supporting column 9 are rotatably connected to the main supporting shaft 2.

[0030] First, supported by the hydraulic rods 8 on both sides and the rotational support of the main support shaft 2 and the rotating support shaft 3 on both sides, the supporting hemisphere 1 can rotate to a certain extent after being subjected to force. This causes the main support shaft 2 to rotate simultaneously with the supporting hemisphere 1. Simultaneously, the supporting hemisphere 1 drives the hydraulic rods 8 on both sides to move in opposite directions, causing the lower anti-compression support shaft 4 and the transmission arm 501 to move simultaneously. This causes the hydraulic rods 8 on both sides to move inwards and outwards from the hydraulic cylinder 801, respectively. Within the hydraulic cylinder 801, the volume of the hydraulic oil itself counteracts the downward force of the hydraulic rods 8, thus providing support for the rotation of the main support shaft 2. The device achieves a limiting resistance effect, and through the combined use of the curvature and depth of the guide groove 101 to restrict the movement of the hydraulic rod 8, it provides limiting support for the movement of the supporting hemisphere 1. Furthermore, the combined use of the main support shaft 2, rotating support shaft 3, guide support shaft 5, and two anti-compression support shafts 4 gives the device a five-axis geometric lock effect, further ensuring its stability during use. By adjusting the amount of hydraulic oil inside the hydraulic cylinder 801, the support strength of the hydraulic rods 8 on both sides and the hydraulic cylinder 801 can be adjusted, allowing the device to be adjusted for users of different weights, providing stability and reliability for use in various environments.

[0031] like Figure 1 - Figure 6As shown, at least two support grooves 201 are provided on the outer side of the main support shaft 2, and the support hemisphere 1 is located between the two support grooves 201. A rotating ring 7 is rotatably connected inside the support groove 201, and the rotating ring 7 is inclined at the same angle as the support groove 201.

[0032] The rotating ring 7 is sleeved on the outside of the main support shaft 2, and the upper end of the support column 9 is installed on the outside of the rotating ring 7. Roller balls 701 are rolled on both sides of the rotating ring 7. The support groove 201 has limiting ring grooves 702 on both sides for rolling support of the roller balls 701.

[0033] First, based on the rotation limit of the rotating ring 7 by the support groove 201 and the rolling support of the ball 701 by the limiting ring groove 702, the smoothness and efficiency of the rotation of the rotating ring 7 are improved, thereby ensuring the smoothness and stability of the central support shaft 2 under the support of the support column 9 and the support of the rotating ring 7.

[0034] like Figure 1 - Figure 6 As shown, the lower end of the support column 9 is installed on the outside of the rotating support shaft 3. The rotating support shaft 3 is rotatably connected to the two ends of the rotating support frame 10. The two rotating support frames 10 are simultaneously connected to the outside of the fixed support base 11 for support.

[0035] Supported by the bottom fixed support base 11, the support position of the rotating support frames 10 on both sides is kept stable, thereby ensuring the smooth rotation of the central rotating support shaft 3 and the stable operation of the other components.

[0036] like Figure 1 - Figure 6 As shown, at least three support rings 6 are fixedly sleeved on the outside of the main support shaft 2, and positioning balls 601 are installed on both sides of the three support rings 6, and the support rings 6 and positioning balls 601 are located inside the support hemisphere 1.

[0037] Hydraulic rods 8 are installed on the outer surfaces of the two outer support rings 6, and at least two hydraulic rods 8 are installed on the outer side of each support ring 6. The two hydraulic rods 8 are symmetrically distributed and are installed in the hydraulic cylinder 801 in a piston-like manner.

[0038] Two hydraulic cylinders 801 on the same side are simultaneously installed on the outside of the same side pressure-resistant support shaft 4, and the pressure-resistant support shaft 4 is rotatably installed between the two rotating support frames 10.

[0039] With the three support rings 6 fixedly connected to the main support shaft 2 and the support hemisphere 1, and based on the piston-like operation of the hydraulic rod 8 and the hydraulic cylinder 801, the hydraulic rod 8 itself, as well as the combination of the hydraulic rod 8 and the hydraulic cylinder 801, are used to limit the rotation stroke of the support hemisphere 1, ensuring the safety of the rotation angle when it is in use, thereby improving the overall support strength of the device.

[0040] Example 2: A five-axis geometric locking hydraulic knee joint, such as Figure 1 - Figure 6 As shown, a liquid storage cylinder 804 is provided between the two support columns 9. Several connecting heads 803 are provided on the outside of the liquid storage cylinder 804. A connecting bend 802 is connected to the connecting head 803. The connecting bend 802 is installed on the outside of the hydraulic cylinder 801, and the hydraulic cylinder 801 is connected to the inside of the connecting bend 802.

[0041] By adjusting the control valve on the connector 803, the hydraulic oil in the reservoir 804 can move accurately into the hydraulic cylinder 801 through the connector 803 and the connecting bend 802. By opening the connector 803 at different positions, the hydraulic oil inside the hydraulic cylinder 801 can be adjusted accordingly. Thus, by increasing or decreasing the amount of hydraulic oil in the hydraulic cylinder 801, its support strength can be easily adjusted.

[0042] like Figure 1 - Figure 6 As shown, there are at least two transmission arms 501, and the two transmission arms 501 are symmetrically distributed. The two transmission arms 501 are fixedly connected to two anti-compression support shafts 4 respectively. The two transmission arms 501 are rotatably connected to the guide support shaft 5 through a rotating cylinder, and the guide support shaft 5 is rotatably installed between the two rotating support frames 10 on both sides.

[0043] Based on the connection and support of the two transmission arms 501, the rotating cylinder can rotate in a timely manner following the anti-compression support shaft 4, improving the precision and stability of the simultaneous rotation of the components on both sides, thereby ensuring the smooth use and strength stability of the entire device.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A five-axis geometric locking hydraulic knee joint, comprising a supporting hemisphere (1) and a main supporting shaft (2) passing through the middle of the supporting hemisphere (1), characterized in that, A rotating support shaft (3) is provided below the main support shaft (2), a guide support shaft (5) is provided below the rotating support shaft (3), two pressure-resistant support shafts (4) are provided above the rotating support shaft (3) in a corresponding distribution, a support column (9) is provided between the main support shaft (2) and the rotating support shaft (3), a hydraulic rod (8) and a hydraulic cylinder (801) are provided between the pressure-resistant support shaft (4) and the main support shaft (2), a transmission arm (501) is provided between the pressure-resistant support shaft (4) and the guide support shaft (5), at least two guide grooves (101) are provided on the support hemisphere (1), the hydraulic rod (8) extends into the guide groove (101), and the hydraulic rod (8) and the support column (9) are rotatably connected to the main support shaft (2).

2. The five-axis geometric locking hydraulic knee joint according to claim 1, characterized in that, At least two support grooves (201) are provided on the outer side of the main support shaft (2), and the support hemisphere (1) is located between the two support grooves (201). A rotating ring (7) is rotatably connected inside the support groove (201), and the rotating ring (7) is inclined at the same angle as the support groove (201).

3. A five-axis geometric locking hydraulic knee joint according to claim 2, characterized in that, The rotating ring (7) is sleeved on the outside of the main support shaft (2), and the upper end of the support column (9) is installed on the outside of the rotating ring (7). Roller balls (701) are rolled on both sides of the rotating ring (7), and the support groove (201) is provided with limiting ring grooves (702) on both sides for the rolling support of the roller balls (701).

4. A five-axis geometric locking hydraulic knee joint according to claim 1, characterized in that, The lower end of the support column (9) is installed on the outside of the rotating support shaft (3). The rotating support shaft (3) is rotatably connected to the two opposite ends of the rotating support frame (10). The two rotating support frames (10) are simultaneously connected to the outside of the fixed support base (11) for support.

5. A five-axis geometric locking hydraulic knee joint according to claim 1, characterized in that, At least three support rings (6) are fixedly sleeved on the outside of the main support shaft (2), and positioning balls (601) are installed on both sides of the three support rings (6), and the support rings (6) and the positioning balls (601) are located inside the support hemisphere (1).

6. A five-axis geometric locking hydraulic knee joint according to claim 5, characterized in that, The hydraulic rods (8) are installed on the outer surfaces of the two outer support rings (6), and at least two hydraulic rods (8) are installed on the outer side of each support ring (6), and the two hydraulic rods (8) are symmetrically distributed, and the hydraulic rods (8) are installed in the hydraulic cylinder (801) in a piston-like manner.

7. A five-axis geometric locking hydraulic knee joint according to claim 4, characterized in that, Two hydraulic cylinders (801) on the same side are simultaneously installed on the outside of the anti-compression support shaft (4) on the same side, and the anti-compression support shaft (4) is rotatably installed between the rotating support frames (10) on both sides.

8. A five-axis geometric locking hydraulic knee joint according to claim 1, characterized in that, A liquid storage cylinder (804) is provided between the two support columns (9). Several connecting heads (803) are provided on the outside of the liquid storage cylinder (804). A connecting bend (802) is connected to the connecting head (803). The connecting bend (802) is installed on the outside of the hydraulic cylinder (801), and the hydraulic cylinder (801) is connected to the inside of the connecting bend (802).

9. A five-axis geometric locking hydraulic knee joint according to claim 4, characterized in that, There are at least two transmission arms (501), and the two transmission arms (501) are symmetrically distributed. The two transmission arms (501) are fixedly connected to the two anti-compression support shafts (4) respectively. The two transmission arms (501) are rotatably connected to the guide support shaft (5) through a rotating cylinder. The guide support shaft (5) is rotatably installed between the rotating support frames (10) on both sides.

Images