Hip width adjusting device

Abstract

The utility model provides a hip width adjusting device, relates to the field of rehabilitation robots, and is designed for solving the problems that an existing hip width adjusting device is easy to loosen after being used for a long time, and large potential safety hazards exist. The hip width adjusting device comprises a hip body, a width adjusting structure, a left connecting piece, a right connecting piece and a locking structure, and the left connecting piece and the right connecting piece are installed on the hip body in a sliding mode; the width adjusting structure is installed on the hip body and located between the left connecting piece and the right connecting piece, the width adjusting structure is in transmission connection with the left connecting piece and the right connecting piece, and the width adjusting structure is used for driving the left connecting piece and the right connecting piece to be synchronously close to or away from each other; the locking structure is used for locking the left connecting piece and the right connecting piece to the hip body when the left connecting piece and the right connecting piece move to the set position. According to the hip width adjusting device, the hip width can be symmetrically adjusted, and the hip width adjusting device is prevented from loosening after being used for a long time.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation robots, and more specifically, to a hip width adjustment device. Background Technology

[0002] Rehabilitation robots, also known as lower limb robotic gait training systems, can provide gait training modes that conform to human physiological characteristics. Through the coordinated control of the hip, knee, and ankle, they can simulate the entire gait cycle of a normal person walking, thereby accelerating the rehabilitation process.

[0003] To make rehabilitation robots suitable for users of different body sizes, a hip width adjustment device is often installed in the rehabilitation robot. This device allows the hip width of the rehabilitation robot to be adjusted to meet the needs of different users.

[0004] However, some existing hip width adjustment devices use screw locking adjustment structures and pin positioning structures for hip width adjustment, which are cumbersome to operate and inconvenient to adjust, and cannot quickly and easily adapt to the user's hip size. Others use cam clamping structures, which are more convenient to adjust, but the locking force is small and they are prone to loosening after long-term use, posing a significant safety hazard. Utility Model Content

[0005] The purpose of this utility model is to provide a hip width adjustment device to solve the technical problem that existing hip width adjustment devices are prone to loosening after long-term use, posing a significant safety hazard.

[0006] The hip width adjustment device provided by this utility model includes a hip body, a width adjustment structure, a left connector, a right connector, and a locking structure. The left connector and the right connector are slidably mounted on the hip body. The width adjustment structure is mounted on the hip body and located between the left connector and the right connector. The width adjustment structure is drively connected to both the left connector and the right connector, and is used to drive the left connector and the right connector to move synchronously closer or farther away. The locking structure is used to lock the left connector and the right connector to the hip body when they move to a set position.

[0007] Furthermore, the width adjustment structure includes an adjusting screw, a slider, and a transmission rod assembly. The adjusting screw is rotatably mounted on the hip body about a vertical axis. The slider has a threaded hole and is screwed to the adjusting screw through the threaded hole. The slider is also slidably mounted on the hip body. The transmission rod assembly is hinged to the slider, and both the left and right connecting parts are hinged to the transmission rod assembly.

[0008] Furthermore, the transmission rod assembly includes a drive rod, an intermediate transmission rod, a left connecting rod, and a right connecting rod. The intermediate transmission rod is hinged to the hip body. One end of the left connecting rod is hinged to the first end of the intermediate transmission rod, and the other end of the left connecting rod is hinged to the left connecting member. One end of the right connecting rod is hinged to the second end of the intermediate transmission rod, and the other end of the right connecting rod is hinged to the right connecting member. One end of the drive rod is hinged to the slider, and the other end of the drive rod is hinged to the intermediate transmission rod. The hinge axis between the drive rod and the intermediate transmission rod is parallel to the hinge axis between the intermediate transmission rod and the hip body.

[0009] Furthermore, the width adjustment structure also includes a fixing block, a bearing, a bearing cap, and a limiting nut. The fixing block is fixedly connected to the hip body, and the fixing block has a stepped hole that runs through the vertical direction. The bearing is fixedly disposed in the stepped hole, and the adjusting screw is fixedly fitted into the bearing. The bearing cap is fitted onto the adjusting screw and abuts against the end face of the bearing. The limiting nut is screwed onto the adjusting screw and abuts against the bearing cap.

[0010] Furthermore, the width adjustment structure also includes a width adjustment handle, which is fixedly installed on the adjustment screw.

[0011] Furthermore, the hip body includes a hip mounting plate, a left cover plate, and a right cover plate, wherein the width adjustment structure is mounted on the hip mounting plate; the left cover plate is connected to the hip mounting plate, and a left sliding groove for sliding engagement with the left connector is formed between the left cover plate and the hip mounting plate; the right cover plate is connected to the hip mounting plate, and a right sliding groove for sliding engagement with the right connector is formed between the right cover plate and the hip mounting plate.

[0012] Furthermore, the locking structure includes a first locking component and a second locking component, wherein the first locking component is mounted on the hip mounting plate for locking the left connector to the hip body; and the second locking component is mounted on the hip mounting plate for locking the right connector to the hip body.

[0013] Furthermore, the hip mounting plate has a first locking hole, and the left connector has a first strip-shaped hole extending along its sliding direction. The first locking assembly includes a first locking pin, a first limiting member, and a first handle. The first locking pin passes through the first strip-shaped hole and the first locking hole in sequence and is connected to the first limiting member. The first handle includes a first handle portion and a first cam portion. The first cam portion is ball-jointed with the first locking pin, and the first cam portion is configured to press the left connector against the hip mounting plate after rotation.

[0014] The hip mounting plate is also provided with a second locking hole, and the right connector is provided with a second strip-shaped hole whose length extends along its sliding direction. The second locking assembly includes a second locking pin, a second limiting member, and a second handle. The second locking pin passes through the second strip-shaped hole and the second locking hole in sequence and is connected to the second limiting member. The second handle includes a second handle portion and a second cam portion. The second cam portion is ball-jointed with the second locking pin and is configured to press the right connector against the hip mounting plate after rotation.

[0015] Furthermore, the first limiting member includes a first nut, and the first locking pin protrudes from one end of the hip mounting plate and is provided with a first external thread. The first limiting member is threadedly connected to the first locking pin.

[0016] The second limiting member includes a second nut, and the second locking pin protrudes from one end of the hip mounting plate and is provided with a second external thread. The second limiting member is threadedly connected to the second locking pin.

[0017] Furthermore, the first locking assembly also includes a first pressure block, which is sleeved on the first locking pin and located between the left connector and the first cam portion. The surface of the first pressure block facing the first cam portion is provided with a first concave surface, which is used to accommodate the first cam portion.

[0018] The second locking assembly further includes a second pressure block, which is sleeved on the second locking pin and located between the right connector and the second cam portion. The surface of the second pressure block facing the second cam portion is provided with a second concave surface, which is used to accommodate the second cam portion.

[0019] The beneficial effects of this hip width adjustment device are:

[0020] When hip width needs to be adjusted, the left and right connectors can be slid across the hip body via the widening structure. The hip width is reduced by bringing the left and right connectors closer together, and increased by moving them further apart. After adjusting the hip width, the left and right connectors can be locked to the hip body using the locking structure to keep them in that position.

[0021] Therefore, the hip width adjustment device, through the above-mentioned design, not only achieves synchronous movement of the left and right connecting parts, allowing them to move closer or further away simultaneously to achieve symmetrical adjustment and avoid the inability to ensure synchronous size changes due to differences between the left and right sides, but also uses a locking structure to lock the left and right connecting parts after they have moved to the set position, preventing the hip width adjustment device from loosening after prolonged use, thereby reducing the risk of injury to the user and minimizing safety hazards during use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of the hip width adjustment device provided in this embodiment of the utility model;

[0024] Figure 2 A schematic diagram of the hip body of the hip width adjustment device provided in this embodiment of the utility model;

[0025] Figure 3 A partial structural schematic diagram of the hip width adjustment device provided in this embodiment of the utility model;

[0026] Figure 4 A longitudinal sectional view of the width adjustment structure of the hip width adjustment device provided in this embodiment of the utility model;

[0027] Figure 5 A longitudinal sectional view of the hip width adjustment device provided in this embodiment of the present invention, showing the left connector being locked to the hip mounting plate by the first locking assembly;

[0028] Figure 6 A longitudinal sectional view of the hip width adjustment device provided in this embodiment of the present invention, wherein the locking component is released from locking the left connector.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100 - Hip body; 200 - Width adjustment structure; 300 - Left connector; 310 - First slot; 400 - Right connector; 410 - Second slot; 500 - First locking assembly; 600 - Second locking assembly;

[0031] 110 - Hip mounting plate; 111 - First locking hole; 112 - Second locking hole; 113 - Limiting groove; 120 - Left cover plate; 130 - Right cover plate;

[0032] 210 - Adjusting screw; 220 - Slider; 230 - Transmission rod assembly; 240 - Fixing block; 250 - Bearing; 260 - Bearing cover; 270 - Limit nut; 280 - Width adjustment handle;

[0033] 231 - Driving rod; 232 - Intermediate transmission rod; 233 - Left connecting rod; 234 - Right connecting rod;

[0034] 510 - First locking pin; 520 - First limiting member; 530 - First handle; 531 - First cam part; 532 - First handle part; 540 - First pressure block; 541 - First concave surface. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0036] Figure 1 This is a schematic diagram of the hip width adjustment device provided in this embodiment. Figure 1 As shown, this embodiment provides a hip width adjustment device, including a hip body 100, a width adjustment structure 200, a left connector 300, a right connector 400, and a locking structure. The left connector 300 and right connector 400 are slidably mounted on the hip body 100. The width adjustment structure 200 is mounted on the hip body 100 and located between the left connector 300 and the right connector 400. The width adjustment structure 200 is drively connected to both the left connector 300 and the right connector 400, and is used to drive the left connector 300 and the right connector 400 to move closer or further away simultaneously. The locking structure is used to lock the left connector 300 and the right connector 400 to the hip body 100 when both move to a set position.

[0037] When hip width needs to be adjusted, the left connector 300 and the right connector 400 can be slid on the hip body 100 by the widening structure 200. The hip width is reduced by the left connector 300 and the right connector 400 moving closer to each other, and the hip width is increased by the left connector 300 and the right connector 400 moving further apart. After the hip width adjustment is completed, the locking structure can be used to lock the left connector 300 and the right connector 400 on the hip body 100 so that the left connector 300 and the right connector 400 are kept in that position.

[0038] Therefore, the hip width adjustment device, through the above-mentioned design, not only achieves synchronous movement of the left connector 300 and the right connector 400, allowing them to move closer or further away simultaneously to achieve symmetrical adjustment and avoid the inability to ensure synchronous size changes due to differences between the left and right sides, but also utilizes a locking structure to lock the left connector 300 and the right connector 400 after they have moved to the set position, preventing the hip width adjustment device from loosening after prolonged use, thereby reducing the risk of injury to the user and minimizing safety hazards during use.

[0039] Figure 2 This is a schematic diagram of the hip body 100 of the hip width adjustment device provided in this embodiment. Figure 2 As shown, the hip body 100 may include a hip mounting plate 110, a left cover plate 120, and a right cover plate 130. The width adjustment structure 200 is mounted on the hip mounting plate 110. The left cover plate 120 is connected to the hip mounting plate 110, and a left sliding groove is formed between the left cover plate 120 and the hip mounting plate 110 for sliding engagement with the left connector 300. The right cover plate 130 is also connected to the hip mounting plate 110, and a right sliding groove is formed between the right cover plate 130 and the hip mounting plate 110 for sliding engagement with the right connector 400.

[0040] This design not only enables the sliding assembly of the left connector 300 and the right connector 400 with the hip mounting plate 110, ensuring stability during width adjustment, but also utilizes the left cover plate 120 and the right cover plate 130 to connect with the hip mounting plate 110 to form a left slide groove and a right slide groove, respectively. The structure is simple and easy to process and manufacture.

[0041] Specifically, in this embodiment, both the left cover plate 120 and the right cover plate 130 are connected to the hip mounting plate 110 by fixing screws.

[0042] Figure 3 This is a partial structural diagram of the hip width adjustment device provided in this embodiment. Please continue to refer to... Figure 1 and combined Figure 3 In this embodiment, the width adjustment structure 200 may include an adjusting screw 210, a slider 220, and a transmission rod assembly 230. The adjusting screw 210 is rotatably mounted on the hip body 100 about a vertical axis. The slider 220 has a threaded hole and is screwed to the adjusting screw 210 through the threaded hole. The slider 220 is also slidably mounted on the hip body 100. The transmission rod assembly 230 is hinged to the slider 220, and both the left connector 300 and the right connector 400 are hinged to the transmission rod assembly 230.

[0043] When it is necessary to adjust the hip width, the adjusting screw 210 can be rotated. Under the helical engagement of the adjusting screw 210 and the slider 220 and the sliding connection between the slider 220 and the hip body 100, the helical transmission between the adjusting screw 210 and the slider 220 will be converted into the up-and-down movement of the slider 220 relative to the hip body 100. This allows the slider 220 to drive the left connecting member 300 and the right connecting member 400 to move closer or further apart through the transmission rod assembly 230.

[0044] This method of adjusting hip width by rotating the adjusting screw 210 has several advantages. First, it amplifies the torque, enabling effortless adjustment of hip width. Moreover, the adjustment process only requires rotating the adjusting screw 210, making it simple, convenient, and efficient. Second, after adjusting the hip width, the adjusting screw 210 stops rotating. At this point, the screw 210 is self-locked by the helical engagement between the adjusting screw 210 and the slider 220, ensuring a fixed hip spacing. This is further enhanced by a locking structure that secures the left connecting member 300 and the right connecting member 400, achieving a double locking effect on the hip spacing. This effectively prevents the hip width adjustment device from becoming loose during use.

[0045] Please continue to refer to Figure 2 In this embodiment, the hip mounting plate 110 has a limiting groove 113 extending in the vertical direction, and the slider 220 slides in the limiting groove 113.

[0046] The aforementioned limiting groove 113 not only enables the sliding installation of the slider 220 relative to the hip mounting plate 110, but also allows the top and bottom ends of the limiting groove 113 to limit the vertical movement of the slider 220, thereby limiting the left and right movement of the left connector 300 and the right connector 400.

[0047] This setting shifts the travel limit of the left connector 300 and the right connector 400 to the upper and lower limits of the slider 220, eliminating the need to set separate travel limit structures for the left connector 300 and the right connector 400, which not only reduces costs but also saves space.

[0048] Please continue to refer to Figure 3In this embodiment, the transmission rod assembly 230 may include a drive rod 231, an intermediate transmission rod 232, a left connecting rod 233, and a right connecting rod 234. The intermediate transmission rod 232 is hinged to the hip mounting plate 110 of the hip body 100. One end of the left connecting rod 233 is hinged to the first end of the intermediate transmission rod 232, and the other end of the left connecting rod 233 is hinged to the left connecting member 300. One end of the right connecting rod 234 is hinged to the second end of the intermediate transmission rod 232, and the other end of the right connecting rod 234 is hinged to the right connecting member 400. One end of the drive rod 231 is hinged to the slider 220, and the other end of the drive rod 231 is hinged to the intermediate transmission rod 232. The hinge axis of the drive rod 231 and the intermediate transmission rod 232 is parallel to the hinge axis of the intermediate transmission rod 232 and the hip body 100.

[0049] by Figure 3 The following explanation uses the shown perspective as an example. When it is necessary to reduce the hip width, the adjusting screw 210 can be rotated to the right to drive the slider 220 upward. Under the hinge action between the slider 220 and the driving rod 231, the driving rod 231 will move upward along with the slider 220. During the upward movement of the driving rod 231, the left connecting rod 233 and the right connecting rod 234 will be driven to rotate through the intermediate transmission rod 232, so that the left connecting piece 300 and the right connecting piece 400 move closer to each other, thereby achieving the purpose of reducing the hip width.

[0050] When it is necessary to increase the hip width, the adjusting screw 210 can be rotated to the left to drive the slider 220 to move downward. Under the hinge action of the slider 220 and the driving rod 231, the driving rod 231 will move downward together with the slider 220. During the downward movement of the driving rod 231, the left connecting rod 233 and the right connecting rod 234 will be driven to rotate through the intermediate transmission rod 232, so that the left connecting piece 300 and the right connecting piece 400 move away from each other, thereby achieving the purpose of increasing the hip width.

[0051] This configuration of the transmission rod assembly 230 not only simplifies the structure but also enables reliable transmission of power from the slider 220 to the left connector 300 and the right connector 400.

[0052] It should be noted that in this embodiment, the slider 220 slides into the limiting groove 113 through its hinge shaft with the transmission rod assembly 230. Specifically, the slider 220 and the hinge shaft of the active rod 231 are slidably assembled in the limiting groove 113.

[0053] Figure 4 This is a longitudinal sectional view of the width adjustment structure 200 of the hip width adjustment device provided in this embodiment. Please continue to refer to... Figure 3 and combined Figure 4In this embodiment, the width adjustment structure 200 may further include a fixing block 240, a bearing 250, a bearing cap 260, and a limiting nut 270. The fixing block 240 is fixedly connected to the hip mounting plate 110 of the hip body 100, and the fixing block 240 has a stepped hole that runs through the vertical direction. The bearing 250 is fixedly disposed in the stepped hole, and the adjusting screw 210 is fixedly fitted into the bearing 250. The bearing cap 260 is fitted onto the adjusting screw 210 and abuts against the end face of the bearing 250. The limiting nut 270 is screwed onto the adjusting screw 210 and abuts against the bearing cap 260.

[0054] This configuration allows for the rotatable installation of the adjusting screw 210 relative to the hip mounting plate 110. Furthermore, the bearing cap 260 and the stepped hole provide axial restraint for the bearing 250, preventing axial movement. Specifically, the bearing cap 260 is secured by the contact between the restraining nut 270 and the bearing cap 260, preventing any loosening of the bearing cap 260 from affecting the restraining effect on the bearing 250.

[0055] Please continue to refer to Figure 3 and Figure 4 In this embodiment, the width adjustment structure 200 may further include a width adjustment handle 280, wherein the width adjustment handle 280 is fixedly installed on the adjustment screw 210.

[0056] When the user needs to adjust the screw 210 to rotate, torque can be applied to the width adjustment handle 280, which transmits the torque to the screw 210 to drive it to rotate. The width adjustment handle 280 provides the user with a point of application, making it easier for the user to drive the screw 210 to rotate.

[0057] Please continue to refer to Figure 1 In this embodiment, the locking structure may include a first locking component 500 and a second locking component 600. The first locking component 500 is mounted on the hip mounting plate 110 and is used to lock the left connector 300 to the hip body 100. The second locking component 600 is also mounted on the hip mounting plate 110 and is used to lock the right connector 400 to the hip body 100.

[0058] When adjusting the hip width, the left connector 300 can be locked to the hip body 100 using the first locking assembly 500, and the right connector 400 can be locked to the hip body 100 using the second locking assembly 600, thus further locking the positions of the left connector 300 and the right connector 400. This setting can provide a secondary locking force to the left connector 300 and the right connector 400 simultaneously, thereby effectively preventing loosening after hip width adjustment.

[0059] Figure 5 A longitudinal sectional view of the hip width adjustment device provided in this embodiment, in which the left connector 300 is locked to the hip mounting plate 110 by the first locking assembly 500; Figure 6 This is a longitudinal sectional view of the hip width adjustment device provided in this embodiment, showing the first locking assembly 500 releasing the lock on the left connector 300. Please continue to refer to... Figure 2 and combined Figure 5 and Figure 6 In this embodiment, the hip mounting plate 110 has a first locking hole 111, and the left connector 300 has a first strip hole 310 extending along its sliding direction. The first locking assembly 500 includes a first locking pin 510, a first limiting member 520, and a first handle 530. The first locking pin 510 passes through the first strip hole 310 and the first locking hole 111 in sequence and is connected to the first limiting member 520. The first handle 530 includes a first handle portion 532 and a first cam portion 531. The first cam portion 531 is ball-jointed with the first locking pin 510. The first cam portion 531 is configured to press the left connector 300 against the hip mounting plate 110 after rotation.

[0060] Please continue to refer to Figure 6 When the first handle 530 is unlocked, the left connector 300 is in a free state and can slide in the left groove formed by the left cover plate 120 and the hip mounting plate 110. At this time, the first locking pin 510 slides in the first slot 310 of the left connector 300, which further guides the movement of the left connector 300. When the left connector 300 moves to the required position, the first handle part 532 can be pressed down, so that the first cam part 531 and the first locking pin 510 rotate relative to each other. During the rotation of the first cam part 531, the change of the cam surface of the first cam part 531 is used to press the left connector 300 between the first cam part 531 and the hip mounting plate 110, thereby locking the left connector 300.

[0061] This method of locking and unlocking the first cam 531 by cooperating with the left connector 300 at different positions is not only reliable in locking, but also convenient for the user to operate.

[0062] Similarly, the hip mounting plate 110 may also have a second locking hole 112, and the right connector 400 has a second strip hole 410 extending along its sliding direction. The second locking assembly 600 includes a second locking pin, a second limiting member, and a second handle. The second locking pin passes through the second strip hole 410 and the second locking hole 112 in sequence and is connected to the second limiting member. The second handle includes a second handle portion and a second cam portion. The second cam portion is ball-jointed with the second locking pin and is configured to press the right connector 400 against the hip mounting plate 110 after rotation.

[0063] In other words, the structure of the second locking component 600 is the same as that of the first locking component 500. The process and principle of the second locking component 600 for locking the right connector 400 to the hip mounting plate 110 are also the same as those of the first locking component 500 for locking the left connector 300 to the hip mounting plate 110, and can achieve the same effect. Therefore, no further illustrations or text descriptions are needed.

[0064] Please continue to refer to Figure 5 and Figure 6 In this embodiment, the first limiting member 520 may include a first nut, and the first locking pin 510 protruding from one end of the hip mounting plate 110 is provided with a first external thread. The first limiting member 520 is threadedly connected to the first locking pin 510.

[0065] The first limiting member 520 is configured in such a way that when it is necessary to adjust the clamping force of the first cam portion 531 on the left connecting member 300, the first limiting member 520 can be turned in the unlocked state of the first handle 530 to change the fixed position of the first limiting member 520 on the first locking pin 510, so as to achieve the purpose of adjusting the clamping force of the first cam portion 531 on the left connecting member 300.

[0066] Similarly, the second limiting member may include a second nut, wherein the second locking pin protrudes from one end of the hip mounting plate 110 and is provided with a second external thread, and the second limiting member is threadedly connected to the second locking pin.

[0067] This configuration of the second limiting member allows for adjustment of the clamping force of the second cam portion on the right connecting member 400 when the second handle is unlocked. The second limiting member can be rotated to change its fixed position on the second locking pin, thereby achieving the purpose of adjusting the clamping force of the second cam portion on the right connecting member 400.

[0068] Please continue to refer to Figure 5 and Figure 6 In this embodiment, the first locking component 500 may further include a first pressing block 540. Specifically, the first pressing block 540 is sleeved on the first locking pin 510 and is located between the left connector 300 and the first cam portion 531. The surface of the first pressing block 540 facing the first cam portion 531 is provided with a first concave surface 541, which is used to accommodate the first cam portion 531.

[0069] The aforementioned first pressure block 540 serves two purposes. First, it allows the first cam portion 531 to apply a clamping force to the left connector 300 through the first pressure block 540, preventing the first cam portion 531 from directly acting on the left connector 300 and causing damage to it. Second, it also utilizes the first concave surface 541 of the first pressure block 540 to accommodate the first cam portion 531, thereby limiting the first cam portion 531 in the locked state and preventing it from accidentally opening in the locked state. This further reduces the risk of the hip width adjustment device in this embodiment becoming loose during use.

[0070] Similarly, in this embodiment, the second locking component 600 may also include a second pressing block. Specifically, the second pressing block is sleeved on the second locking pin and is located between the right connector 400 and the second cam portion. The surface of the second pressing block facing the second cam portion is provided with a second concave surface, which is used to accommodate the second cam portion.

[0071] The aforementioned second pressure block serves two purposes. First, it allows the second cam portion to apply a clamping force to the right connector 400 through the second pressure block, preventing the second cam portion from directly acting on the right connector 400 and causing damage to it. Second, the second concave surface of the second pressure block can accommodate the second cam portion, thus limiting the second cam portion in the locked state and preventing it from accidentally opening in the locked state. This further reduces the risk of the hip width adjustment device in this embodiment becoming loose during use.

[0072] The working process of this hip width adjustment device is as follows:

[0073] When the hip width needs to be reduced, the first handle 530 and the second handle are pulled upwards to the unlocked position. Rotating the width-adjusting handle 280 to the right causes the adjusting screw 210 to rotate to the right, driving the slider 220 upwards. During the upward movement of the slider 220, the hinge axis between the slider 220 and the drive rod 231 slides upwards in the limiting groove 113 opened in the hip mounting plate 110. The limiting groove 113 restricts the maximum upward stroke of the slider 220. The drive rod 231 transmits power to the left connecting rod 233 and the right connecting rod 234 through the intermediate transmission rod 232, causing the left connecting rod 233 and the right connecting rod 234 to rotate, thereby driving the left connecting piece 300... The left slide groove slides towards the center of the hip mounting plate 110, and drives the right connector 400 to slide towards the center of the hip mounting plate 110 in the right slide groove, thereby reducing the hip width. After the hip width is adjusted to the appropriate size, the width adjustment handle 280 is stopped from rotating. Under the self-locking action of the screw 210 and the slider 220, the distance between the left connector 300 and the right connector 400 is locked. To ensure safety redundancy, the first handle 530 and the second handle are pulled down to the pressing position. The first pressing block 540 and the second pressing block press the left connector 300 and the right connector 400 onto the hip mounting plate 110 respectively for secondary locking. The locking force can be adjusted by turning the first limiting member 520 when the first handle 530 and the second handle are in the unlocked position; as the left connecting member 300 and the right connecting member 400 move closer and further away from each other, the first locking pin 510 slides in the first strip hole 310 and the second locking pin slides in the second strip hole 410.

[0074] When the hip width needs to be increased, the first handle 530 and the second handle are pulled upwards to the unlocked position. Rotating the width-adjusting handle 280 to the left causes the adjusting screw 210 to rotate to the left, driving the slider 220 downwards. During the downward movement of the slider 220, the hinge axis between the slider 220 and the drive rod 231 slides downwards in the limiting groove 113 opened in the hip mounting plate 110. The limiting groove 113 restricts the maximum downward stroke of the slider 220. The drive rod 231 transmits power to the left connecting rod 233 and the right connecting rod 234 through the intermediate transmission rod 232, causing the left connecting rod 233 and the right connecting rod 234 to rotate, thereby driving the left connecting piece 300... The left slide groove slides towards the left edge of the hip mounting plate 110, and drives the right connector 400 to slide towards the right edge of the hip mounting plate 110 in the right slide groove, thereby increasing the hip width. After the hip width is adjusted to the appropriate size, the width adjustment handle 280 is stopped from rotating. Under the self-locking action of the screw 210 and the slider 220, the distance between the left connector 300 and the right connector 400 is locked. To ensure safety redundancy, the first handle 530 and the second handle are pulled down to the pressing position. The first pressing block 540 and the second pressing block press the left connector 300 and the right connector 400 onto the hip mounting plate 110 respectively for secondary locking.

[0075] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0076] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0077] In the above embodiments, descriptions of directions such as "up", "down", "left", "right", and "side" are all based on the accompanying drawings.

[0078] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hip width adjustment device, characterized in that, The device includes a hip body (100), a width-adjusting structure (200), a left connector (300), a right connector (400), and a locking structure. The left connector (300) and the right connector (400) are slidably mounted on the hip body (100). The width-adjusting structure (200) is mounted on the hip body (100) and located between the left connector (300) and the right connector (400). The width-adjusting structure (200) is driveably connected to both the left connector (300) and the right connector (400). The width-adjusting structure (200) drives the left connector (300) and the right connector (400) to move synchronously closer or farther away. The locking structure is used to move the left connector (300) and the right connector (400) to a set position. When the position is fixed, both the left connector (300) and the right connector (400) are locked to the hip body (100); the width adjustment structure (200) includes an adjusting screw (210), a slider (220) and a transmission rod assembly (230), wherein the adjusting screw (210) is rotatably disposed on the hip body (100) about a vertical axis; the slider (220) has a threaded hole, the slider (220) is screwed to the adjusting screw (210) through the threaded hole, and the slider (220) is slidably mounted on the hip body (100); the transmission rod assembly (230) is hinged to the slider (220), and both the left connector (300) and the right connector (400) are hinged to the transmission rod assembly (230).

2. The hip width adjustment device of claim 1, wherein, The transmission rod assembly (230) includes a drive rod (231), an intermediate transmission rod (232), a left connecting rod (233), and a right connecting rod (234). The intermediate transmission rod (232) is hinged to the hip body (100). One end of the left connecting rod (233) is hinged to the first end of the intermediate transmission rod (232), and the other end of the left connecting rod (233) is hinged to the left connecting member (300). One end of the right connecting rod (234) is hinged to the first end of the intermediate transmission rod (232). The second end of the intermediate transmission rod (232) is hinged, and the other end of the right connecting rod (234) is hinged to the right connecting member (400); one end of the active rod (231) is hinged to the slider (220), and the other end of the active rod (231) is hinged to the intermediate transmission rod (232), and the hinge axis of the active rod (231) and the intermediate transmission rod (232) is parallel to the hinge axis of the intermediate transmission rod (232) and the hip body (100).

3. The hip width adjustment device of claim 1, wherein, The width-adjusting structure (200) further includes a fixing block (240), a bearing (250), a bearing cap (260), and a limiting nut (270), wherein, The fixing block (240) is fixedly connected to the hip body (100), and the fixing block (240) has a stepped hole that runs through the vertical direction. The bearing (250) is fixedly installed in the stepped hole, and the adjusting screw (210) is fixedly fitted into the bearing (250). The bearing cover (260) is fitted onto the adjusting screw (210) and abuts against the end face of the bearing (250). The limiting nut (270) is screwed onto the adjusting screw (210) and abuts against the bearing cover (260).

4. The hip width adjustment device of claim 1, wherein, The width adjustment structure (200) also includes a width adjustment handle (280), which is fixedly installed on the adjustment screw (210).

5. The hip width adjustment device of any of claims 1-4, wherein, The hip body (100) includes a hip mounting plate (110), a left cover plate (120), and a right cover plate (130), wherein the width adjustment structure (200) is mounted on the hip mounting plate (110); the left cover plate (120) is connected to the hip mounting plate (110), and a left sliding groove is formed between the left cover plate (120) and the hip mounting plate (110) for sliding engagement with the left connector (300); the right cover plate (130) is connected to the hip mounting plate (110), and a right sliding groove is formed between the right cover plate (130) and the hip mounting plate (110) for sliding engagement with the right connector (400).

6. The hip width adjustment device of claim 5, wherein, The locking structure includes a first locking component (500) and a second locking component (600), wherein the first locking component (500) is mounted on the hip mounting plate (110) for locking the left connector (300) to the hip body (100); the second locking component (600) is mounted on the hip mounting plate (110) for locking the right connector (400) to the hip body (100).

7. The hip width adjusting device according to claim 6, characterized in that, The hip mounting plate (110) has a first locking hole (111), and the left connector (300) has a first strip hole (310) extending along its sliding direction. The first locking assembly (500) includes a first locking pin (510), a first limiting member (520), and a first handle (530). The first locking pin (510) passes through the first strip hole (310) and the first locking hole (111) in sequence and is connected to the first limiting member (520). The first handle (530) includes a first handle portion (532) and a first cam portion (531). The first cam portion (531) is ball-jointed with the first locking pin (510). The first cam portion (531) is configured to press the left connector (300) against the hip mounting plate (110) after rotation. The hip mounting plate (110) is also provided with a second locking hole (112), and the right connector (400) is provided with a second strip hole (410) extending along its sliding direction. The second locking assembly (600) includes a second locking pin, a second limiting member and a second handle. The second locking pin passes through the second strip hole (410) and the second locking hole (112) in sequence and is connected to the second limiting member. The second handle includes a second handle portion and a second cam portion. The second cam portion is ball-jointed with the second locking pin and is configured to press the right connector (400) against the hip mounting plate (110) after rotation.

8. The hip width adjusting device according to claim 7, characterized in that, The first limiting member (520) includes a first nut, and the first locking pin (510) is provided with a first external thread at one end protruding from the hip mounting plate (110). The first limiting member (520) is threadedly connected to the first locking pin (510). The second limiting member includes a second nut, and the second locking pin protrudes from one end of the hip mounting plate (110) and is provided with a second external thread. The second limiting member is threadedly connected to the second locking pin.

9. The hip width adjusting device according to claim 7, characterized in that, The first locking assembly (500) further includes a first pressure block (540), which is sleeved on the first locking pin (510) and located between the left connector (300) and the first cam portion (531). The surface of the first pressure block (540) facing the first cam portion (531) is provided with a first concave surface (541), which is used to accommodate the first cam portion (531). The second locking assembly (600) further includes a second pressure block, which is sleeved on the second locking pin and located between the right connector (400) and the second cam portion. The surface of the second pressure block facing the second cam portion is provided with a second concave surface, which is used to accommodate the second cam portion.

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