Hip width adjustment device

Abstract

The present invention provides a hip width adjustment device, which relates to the field of rehabilitation robots and is designed to solve the problem that the existing hip width adjustment device is easy to loosen after long-term use and has great safety hazards. The hip width adjustment device includes a hip body, a width adjustment structure, a left connector, a right connector and a locking structure, wherein the left connector and the right connector are slidably installed on the hip body; the width adjustment structure is installed on the hip body and is located between the left connector and the right connector, the width adjustment structure is transmission-connected with the left connector and the right connector, and the width adjustment structure 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 the left connector and the right connector move to a set position. The present invention can symmetrically adjust the hip width, and also avoid the loosening of the hip width adjustment device after long-term use.

Description

Technical Field

[0001] The invention relates to the field of rehabilitation robots, and in particular to a hip width adjusting device. Background Art

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

[0003] In order to make the rehabilitation robot suitable for users of different body shapes, a hip width adjustment device is often provided in the rehabilitation robot. By means of the hip width adjustment device, the hip width of the rehabilitation robot can be adjusted to meet the needs of different users.

[0004] However, some of the existing hip width adjustment devices use a screw locking adjustment structure and a pin positioning structure to adjust the hip width, which is cumbersome to operate and inconvenient to adjust, and cannot quickly and conveniently adapt to the user's hip size; while the other part uses a cam clamping structure, which is more convenient to adjust, but has a small locking force and is easy to loosen after long-term use, posing a great safety hazard. Summary of the invention

[0005] The object of the present invention is to provide a hip width adjustment device to solve the technical problem that the existing hip width adjustment device is easy to loosen after long-term use and has great safety hazards.

[0006] The hip width adjustment device provided by the present invention comprises a hip body, a width adjustment structure, a left connector, a right connector and a locking structure, wherein 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 is located between the left connector and the right connector, the width adjustment structure is transmission-connected with both the left connector and the right connector, and the width adjustment structure is used to drive the left connector and the right connector to synchronously approach or synchronously move away; the locking structure is used to lock the left connector and the right connector to the hip body when both the left connector and the right connector move to a set position.

[0007] Furthermore, the width adjustment structure includes an adjusting screw, a slider and a transmission rod assembly, wherein the adjusting screw is rotatably arranged on the hip body around a vertical axis; the slider is provided with a threaded hole, the slider is spirally engaged with the adjusting screw through the threaded hole, and the slider can be installed on the hip body so as to slide up and down; the transmission rod assembly is hinged to the slider, and the left connecting piece and the right connecting piece are both hinged to the transmission rod assembly.

[0008] Further, the transmission rod assembly includes an active rod, an intermediate transmission rod, a left connecting rod and a right connecting rod, wherein the intermediate transmission rod is hingedly mounted on the hip body, one end of the left connecting rod is hingedly connected to the first end of the intermediate transmission rod, the other end of the left connecting rod is hingedly connected to the left connecting piece, one end of the right connecting rod is hingedly connected to the second end of the intermediate transmission rod, and the other end of the right connecting rod is hingedly connected to the right connecting piece; one end of the active rod is hingedly connected to the slider, the other end of the active rod is hingedly connected to the intermediate transmission rod, and the hinge axis of the active rod and the intermediate transmission rod is parallel to the hinge axis of the intermediate transmission rod and the hip body.

[0009] Furthermore, the width adjustment structure also includes a fixed block, a bearing, a bearing cover and a limiting nut, wherein the fixed block is fixedly connected to the hip body, and the fixed block is provided with a step hole which passes through in the up and down directions, the bearing is fixedly arranged in the step hole, and the adjusting screw is fixedly sleeved into the bearing; the bearing cover is sleeved on the adjusting screw and abuts against the end face of the bearing; the limiting nut is spirally sleeved on the adjusting screw and abuts against the bearing cover.

[0010] Furthermore, the width adjustment structure also includes a width adjustment handle, and the width adjustment handle is fixedly mounted on the adjusting screw.

[0011] Further, the hip body includes a hip mounting plate, a left cover plate and a right cover plate, wherein the width adjustment structure is installed on the hip mounting plate; the left cover plate is connected to the hip mounting plate, and a left slide groove for slidingly cooperating with the left connecting piece 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 slide groove for slidingly cooperating with the right connecting piece is formed between the right cover plate and the hip mounting plate.

[0012] Furthermore, the locking structure includes a first locking assembly and a second locking assembly, wherein the first locking assembly is mounted on the hip mounting plate to lock the left connecting member to the hip body; the second locking assembly is mounted on the hip mounting plate to lock the right connecting member to the hip body.

[0013] Further, the hip mounting plate is provided with a first locking hole, the left connecting member is provided with a first strip hole extending in a sliding direction thereof, the first locking assembly comprises a first locking pin, a first limiting member and a first handle, the first locking pin passes through the first strip hole and the first locking hole in sequence and is connected to the first limiting member; the first handle comprises a first handle portion and a first cam portion, the first cam portion is connected to the first locking pin by a ball joint, and the first cam portion is configured to press the left connecting member against the hip mounting plate after rotation;

[0014] The hip mounting plate is also provided with a second locking hole, and the right connecting piece is provided with a second strip hole extending in its sliding direction. The second locking assembly includes a second locking pin, a second limiting piece and a second handle. The second locking pin passes through the second strip hole and the second locking hole in sequence and is connected to the second limiting piece. The second handle includes a second handle portion and a second cam portion. The second cam portion is ball-jointedly connected to the second locking pin. The second cam portion is configured to press the right connecting piece against the hip mounting plate after rotation.

[0015] Further, the first stopper includes a first nut, one end of the first locking pin protruding from the hip mounting plate is provided with a first external thread, and the first stopper is threadedly connected to the first locking pin;

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

[0017] Further, the first locking assembly further comprises a first pressing block, the first pressing block is sleeved on the first locking pin, and the first pressing block is located between the left connecting member and the first cam portion, and a first concave surface is provided on a surface of the first pressing block facing the first cam portion, and the first concave surface is used to accommodate the first cam portion;

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

[0019] The beneficial effects brought by the hip width adjustment device of the present invention are:

[0020] When the hip width needs to be adjusted, the left connector and the right connector can be driven to slide on the hip body through the width adjustment structure, and the hip width can be reduced by bringing the left connector and the right connector closer to each other, or the hip width can be increased by moving the left connector and the right connector away from each other; after the hip width is adjusted, the locking structure can be used to lock the left connector and the right connector to the hip body to keep them in that position.

[0021] It can be seen that the hip width adjustment device, through the above-mentioned arrangement, not only realizes the synchronous movement of the left connecting member and the right connecting member, making them approach or move away from each other at the same time, achieving the purpose of symmetrical adjustment, avoiding the inability to ensure synchronous size changes due to differences between the left and right sides, but also utilizes the locking structure to realize locking of the left connecting member and the right connecting member after they move to the set position, avoiding the loosening of the hip width adjustment device after long-term use, thereby reducing the risk of injury to the user and reducing safety hazards during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a hip width adjustment device provided by an embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of a hip body of a hip width adjustment device provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a partial structure of a hip width adjustment device provided by an embodiment of the present invention;

[0026] Figure 4 A longitudinal cross-sectional view of a width adjustment structure of a hip width adjustment device provided by an embodiment of the present invention;

[0027] Figure 5 A longitudinal cross-sectional view of a hip width adjustment device provided by an embodiment of the present invention when the first locking assembly locks the left connecting member to the hip mounting plate;

[0028] Figure 6 A longitudinal cross-sectional view of the hip width adjustment device provided by the embodiment of the present invention when the first locking assembly releases the lock on the left connecting member.

[0029] Description of reference numerals:

[0030] 100-hip body; 200-width adjustment structure; 300-left connecting piece; 310-first strip hole; 400-right connecting piece; 410-second strip hole; 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-sliding block; 230-transmission rod assembly; 240-fixing block; 250-bearing; 260-bearing gland; 270-limiting nut; 280-width adjustment handle;

[0033] 231-active 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 portion; 532 - first handle portion; 540 - first pressing block; 541 - first concave surface. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Figure 1 This is a schematic diagram of the structure 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, wherein the left connector 300 and the right connector 400 are slidably installed on the hip body 100; the width adjustment structure 200 is installed on the hip body 100 and is located between the left connector 300 and the right connector 400, the width adjustment structure 200 is transmission-connected with the left connector 300 and the right connector 400, and the width adjustment structure 200 is used to drive the left connector 300 and the right connector 400 to approach or move away synchronously; the locking structure is used to lock the left connector 300 and the right connector 400 to the hip body 100 when the left connector 300 and the right connector 400 move to a set position.

[0037] When the hip width needs to be adjusted, the left connector 300 and the right connector 400 can be driven to slide on the hip body 100 through the width adjustment structure 200, and the hip width can be reduced by bringing the left connector 300 and the right connector 400 closer to each other, and the hip width can be increased by moving the left connector 300 and the right connector 400 farther from each other; after the hip width is adjusted, the locking structure can be used to lock both the left connector 300 and the right connector 400 to the hip body 100, so that the left connector 300 and the right connector 400 remain in this position.

[0038] It can be seen that the hip width adjustment device, through the above-mentioned arrangement, not only realizes the synchronous movement of the left connecting member 300 and the right connecting member 400, making them approach or move away from each other at the same time, achieving the purpose of symmetrical adjustment, avoiding the inability to ensure synchronous size changes due to differences between the left and right sides, but also utilizes the locking structure to realize locking of the left connecting member 300 and the right connecting member 400 after they move to the set position, avoiding the loosening of the hip width adjustment device after long-term use, thereby reducing the risk of injury to the user and reducing safety hazards during use.

[0039] Figure 2 Schematic diagram of the structure 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, wherein the width adjustment structure 200 is installed on the hip mounting plate 110; the left cover plate 120 is connected to the hip mounting plate 110, and a left slide groove for slidingly matching with the left connecting member 300 is formed between the left cover plate 120 and the hip mounting plate 110; the right cover plate 130 is also connected to the hip mounting plate 110, and a right slide groove for slidingly matching with the right connecting member 400 is formed between the right cover plate 130 and the hip mounting plate 110.

[0040] This arrangement not only realizes the sliding assembly of the left connecting member 300 and the right connecting member 400 with the hip mounting plate 110, ensuring the stability during the width adjustment process, 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, which has a simple structure and is easy to process and manufacture.

[0041] Specifically, in this embodiment, the left cover plate 120 and the right cover plate 130 are both 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. Figure 1 , and combined with 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, wherein the adjusting screw 210 is rotatably arranged on the hip body 100 around a vertical axis; the slider 220 is provided with a threaded hole, the slider 220 is spirally matched with the adjusting screw 210 through the above-mentioned threaded hole, and the slider 220 can be installed on the hip body 100 so as to slide up and down; the transmission rod assembly 230 is hinged to the slider 220, and the left connecting member 300 and the right connecting member 400 are both hinged to the transmission rod assembly 230.

[0043] When the hip width needs to be adjusted, the adjusting screw 210 can be rotated. Under the spiral cooperation between the adjusting screw 210 and the slider 220 and the sliding connection between the slider 220 and the hip body 100, the spiral 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, so that the slider 220 can drive the left connecting member 300 and the right connecting member 400 to move closer to or away from each other through the transmission rod assembly 230.

[0044] This form of adjusting the hip width by rotating the adjusting screw 210 can, on the one hand, amplify the torque to achieve labor-saving adjustment of the hip width. Moreover, the adjustment process only requires rotating the adjusting screw 210, and the adjustment process is simple, convenient and efficient. On the other hand, after the adjustment of the hip width is completed, the adjusting screw 210 stops rotating. At this time, the spiral cooperation between the adjusting screw 210 and the slider 220 is used to achieve self-locking of the adjusting screw 210 to ensure that the hip spacing is fixed. The locking structure locks the left connecting piece 300 and the right connecting piece 400 to achieve the purpose of double locking of the hip spacing, thereby effectively avoiding the hip width adjustment device from loosening during use.

[0045] Please continue to refer to Figure 2 In this embodiment, the hip mounting plate 110 is provided with a limiting groove 113 extending in the up-down direction, and the slider 220 is slidably matched with the limiting groove 113 .

[0046] The setting of the above-mentioned limit groove 113 not only realizes the sliding installation of the slider 220 relative to the hip mounting plate 110, but also can use the top and bottom ends of the limit groove 113 to limit the up and down movement stroke of the slider 220, thereby realizing the limitation of the left and right movement strokes of the left connecting member 300 and the right connecting member 400.

[0047] This arrangement transfers the travel limit of the left connecting member 300 and the right connecting member 400 to the upper and lower limits of the slider 220, so that there is no need to set travel limit structures for the left connecting member 300 and the right connecting member 400 respectively, 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 an active rod 231, an intermediate transmission rod 232, a left connecting rod 233 and a right connecting rod 234, wherein the intermediate transmission rod 232 is hingedly mounted on the hip mounting plate 110 of the hip body 100, one end of the left connecting rod 233 is hingedly connected to the first end of the intermediate transmission rod 232, the other end of the left connecting rod 233 is hingedly connected to the left connecting member 300, one end of the right connecting rod 234 is hingedly connected to the second end of the intermediate transmission rod 232, and the other end of the right connecting rod 234 is hingedly connected to the right connecting member 400; one end of the active rod 231 is hingedly connected to the slider 220, the other end of the active rod 231 is hingedly connected 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.

[0049] by Figure 3 When the hip width needs to be reduced, the adjusting screw 210 can be rotated rightward to drive the slider 220 to move upward. Under the hinged action of the slider 220 and the active rod 231, the active rod 231 will move upward with the slider 220. During the upward movement of the active 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 member 300 and the right connecting member 400 are close to each other, so as to reduce the hip width.

[0050] When the hip width needs to be increased, the adjusting screw 210 can be rotated to the left to drive the slider 220 to move downward. Under the hinged action of the slider 220 and the active rod 231, the active rod 231 will move downward with the slider 220. During the downward movement of the active 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 member 300 and the right connecting member 400 are moved away from each other, thereby achieving the purpose of increasing the hip width.

[0051] This arrangement of the transmission rod assembly 230 is not only simple in structure, but also can achieve reliable transmission of the power of the slider 220 to the left connecting member 300 and the right connecting member 400 .

[0052] It should be noted that, in the present embodiment, the slider 220 is slidably matched with the limiting groove 113 through the hinge axis between the slider 220 and the transmission rod assembly 230 . Specifically, the hinge axis between the slider 220 and the active rod 231 is slidably assembled in the limiting groove 113 .

[0053] Figure 4 This is a longitudinal cross-sectional view of the width adjustment structure 200 of the hip width adjustment device provided in this embodiment. Figure 3 , and combined with Figure 4In this embodiment, the width adjustment structure 200 may further include a fixing block 240, a bearing 250, a bearing cover 260 and a limiting nut 270, wherein the fixing block 240 is fixedly connected to the hip mounting plate 110 of the hip body 100, and the fixing block 240 is provided with a step hole extending through in the up-down direction, the bearing 250 is fixedly arranged in the step hole, the adjusting screw 210 is fixedly sleeved into the bearing 250; the bearing cover 260 is sleeved on the adjusting screw 210 and abuts against the end face of the bearing 250; the limiting nut 270 is spirally sleeved on the adjusting screw 210 and abuts against the bearing cover 260.

[0054] This arrangement realizes the rotational installation of the adjusting screw 210 relative to the hip mounting plate 110, and the arrangement of the bearing cover 260 and the stepped hole realizes the axial limit of the bearing 250, preventing the bearing 250 from axial movement. The limiting nut 270 is in contact with the bearing cover 260 to realize the limiting fixation of the bearing cover 260, preventing the loosening of the bearing cover 260 from affecting the limiting effect of 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 mounted on the adjustment screw 210 .

[0056] When the user needs to adjust the screw 210 to rotate, the user can apply torque to the width adjustment handle 280, and use the width adjustment handle 280 to transmit the torque to the adjustment screw 210, so as to achieve the purpose of driving the adjustment screw 210 to rotate. The setting of the width adjustment handle 280 provides a force application point for the user, which is convenient for the user to drive the adjustment screw 210 to rotate.

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

[0058] When the hip width is adjusted, the left connector 300 can be locked to the hip body 100 by using the first locking assembly 500, and the right connector 400 can be locked to the hip body 100 by using the second locking assembly 600, so as to further lock the positions of the left connector 300 and the right connector 400. This arrangement can provide a secondary locking force for the left connector 300 and the right connector 400 at the same time, thereby effectively preventing the loosening after the hip width is adjusted.

[0059] Figure 5 A longitudinal cross-sectional view of the hip width adjustment device provided in this embodiment when the first locking assembly 500 locks the left connecting member 300 to the hip mounting plate 110; Figure 6 This is a longitudinal cross-sectional view of the hip width adjustment device provided in this embodiment when the first locking assembly 500 releases the lock on the left connecting member 300. Please continue to refer to Figure 2 , and combined with Figure 5 and Figure 6 In this embodiment, the hip mounting plate 110 is provided with a first locking hole 111, and the left connecting member 300 is provided with a first strip hole 310 whose length extends 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-jointedly connected to the first locking pin 510. The first cam portion 531 is configured to press the left connecting member 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 connecting member 300 is in a free state, and the left connecting member 300 can slide in the left sliding 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 strip hole 310 of the left connecting member 300, which further guides the movement of the left connecting member 300; when the left connecting member 300 moves to the desired position, the first handle portion 532 can be pressed down to make the first cam portion 531 and the first locking pin 510 rotate relative to each other. During the rotation of the first cam portion 531, the cam surface of the first cam portion 531 changes, so that the left connecting member 300 is pressed between the first cam portion 531 and the hip mounting plate 110, thereby achieving the locking of the left connecting member 300.

[0061] This method of utilizing different positions of the first cam portion 531 to cooperate with the left connecting member 300 to achieve locking and unlocking thereof is not only reliable in locking, but also convenient for users to operate.

[0062] Similarly, the hip mounting plate 110 can also be provided with a second locking hole 112, and the right connecting member 400 is provided with a second strip hole 410 extending along its sliding direction, and the second locking assembly 600 includes a second locking pin, a second limit member and a second handle, and 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 limit member; the second handle includes a second handle portion and a second cam portion, the second cam portion is ball-jointedly connected to the second locking pin, and the second cam portion is configured to press the right connecting member 400 against the hip mounting plate 110 after rotation.

[0063] That is to say, the structure of the second locking assembly 600 is the same as that of the first locking assembly 500, and the process and principle of the second locking assembly 600 for locking the right connecting member 400 to the hip mounting plate 110 are also the same as the process and principle of the first locking assembly 500 for locking the left connecting member 300 to the hip mounting plate 110, and can achieve the same effect, so no further description is provided in the drawings or in text.

[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 one end of the first locking pin 510 protruding from the hip mounting plate 110 is provided with a first external thread, and the first limiting member 520 is threadedly connected to the first locking pin 510 .

[0065] This arrangement of the first limit member 520 makes it possible to change the fixed position of the first limit member 520 on the first locking pin 510 by rotating the first limit member 520 when it is necessary to adjust the clamping force of the first cam portion 531 on the left connecting member 300 when the first handle 530 is unlocked, 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 one end of the second locking pin protruding from the hip mounting plate 110 is provided with a second external thread, and the second limiting member is threadedly connected to the second locking pin.

[0067] This arrangement of the second limit member makes it possible to change the fixed position of the second limit member on the second locking pin by rotating the second limit member when it is necessary to adjust the clamping force of the second cam portion on the right connecting member 400 when the second handle is unlocked, so as to achieve 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 assembly 500 may further include a first pressing block 540. Specifically, the first pressing block 540 is sleeved on the first locking pin 510, and the first pressing block 540 is located between the left connecting member 300 and the first cam portion 531, wherein a first concave surface 541 is provided on the surface of the first pressing block 540 facing the first cam portion 531, and the first concave surface 541 is used to accommodate the first cam portion 531.

[0069] The provision of the first pressing block 540, on the one hand, enables the first cam portion 531 to apply a pressing force to the left connecting member 300 through the first pressing block 540, thereby preventing the first cam portion 531 from directly acting on the left connecting member 300 and causing damage to the left connecting member 300; on the other hand, the first concave surface 541 provided on the first pressing block 540 can be used to accommodate the first cam portion 531, thereby limiting the first cam portion 531 in a locked state, thereby preventing the first cam portion 531 from accidentally opening in the locked state, thereby further reducing the risk of the hip width adjustment device of this embodiment becoming loose during use.

[0070] Similarly, in this embodiment, the second locking assembly 600 may also include a second pressure block. Specifically, the second pressure block is sleeved on the second locking pin, and the second pressure block is located between the right connecting member 400 and the second cam portion, wherein a second concave surface is provided on the surface of the second pressure block facing the second cam portion, and the second concave surface is used to accommodate the second cam portion.

[0071] The provision of the above-mentioned second pressure block, on the one hand, enables the second cam portion to apply a clamping force to the right connecting member 400 through the second pressure block, thereby avoiding the second cam portion directly acting on the right connecting member 400 and causing damage to the right connecting member 400; on the other hand, the second concave surface provided by the second pressure block can also be used to accommodate the second cam portion, thereby limiting the second cam portion in a locked state, thereby preventing the second cam portion from accidentally opening in the locked state, thereby further reducing the risk of the hip width adjustment device of this embodiment loosening during use.

[0072] The working process of the 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 upward to the unlocked position, and the width adjustment handle 280 is rotated to the right to rotate the adjusting screw 210 to the right, thereby driving the slider 220 to move upward. During the upward movement of the slider 220, the hinge axis of the slider 220 and the active rod 231 slides upward in the limiting groove 113 provided on the hip mounting plate 110, and the limiting groove 113 is used to limit the maximum upward travel of the slider 220. The active rod 231 transmits power to the left connecting rod 233 and the right connecting rod 234 through the intermediate transmission rod 232, so that the left connecting rod 233 and the right connecting rod 234 rotate to drive the left connecting member 300 to move upward. The left slide groove slides toward the center direction of the hip mounting plate 110, and drives the right connecting member 400 to slide in the right slide groove toward the center direction of the hip mounting plate 110, so as to achieve the purpose of reducing the hip width; when the hip width is adjusted to an appropriate size, stop rotating the width adjustment handle 280, and under the thread self-locking action of the adjusting screw 210 and the slider 220, the distance between the left connecting member 300 and the right connecting member 400 is locked. To ensure safety redundancy, the first handle 530 and the second handle are pulled down to the clamping position, and the left connecting member 300 and the right connecting member 400 are respectively clamped on the hip mounting plate 110 by the first clamping block 540 and the second clamping block for secondary locking. In which, the locking force can be adjusted by screwing the first limit member 520 when the first handle 530 and the second handle are in the unlocked position; in the process of the left connecting member 300 and the right connecting member 400 approaching and moving away from each other, the first locking pin 510 slides in the first bar hole 310, and the second locking pin slides in the second bar hole 410.

[0074] When the hip width needs to be increased, the first handle 530 and the second handle are pulled upward to the unlocked position, and the width adjustment handle 280 is rotated to the left to rotate the adjusting screw 210 to the left, thereby driving the slider 220 to move downward. During the downward movement of the slider 220, the hinge axis of the slider 220 and the active rod 231 slides downward in the limiting groove 113 provided on the hip mounting plate 110, and the limiting groove 113 is used to limit the maximum downward stroke of the slider 220. The active rod 231 transmits power to the left connecting rod 233 and the right connecting rod 234 through the intermediate transmission rod 232, so that the left connecting rod 233 and the right connecting rod 234 rotate to drive the left connecting member 300 to move downward. The left slide groove slides toward the left edge of the hip mounting plate 110, and drives the right connecting member 400 to slide in the right slide groove toward the right edge of the hip mounting plate 110, so as to achieve the purpose of increasing the hip width; when the hip width is adjusted to an appropriate size, stop rotating the width adjustment handle 280, and under the thread self-locking action of the adjusting screw 210 and the slider 220, the distance between the left connecting member 300 and the right connecting member 400 is locked. To ensure safety redundancy, the first handle 530 and the second handle are pulled down to the clamping position, and the left connecting member 300 and the right connecting member 400 are respectively clamped on the hip mounting plate 110 by the first clamping block 540 and the second clamping block for secondary locking.

[0075] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0076] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0077] In the above embodiments, the descriptions of directions such as “upper”, “lower”, “left”, “right”, and “side” are all based on the drawings.

[0078] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hip width adjustment device, characterized in that: The invention comprises a hip body (100), a width adjustment structure (200), a left connecting piece (300), a right connecting piece (400) and a locking structure, wherein the left connecting piece (300) and the right connecting piece (400) are slidably mounted on the hip body (100); the width adjustment structure (200) is mounted on the hip body (100) and is located between the left connecting piece (300) and the right connecting piece (400); the width adjustment structure (200) and the right connecting piece (400) are slidably mounted on the hip body (100); the width adjustment structure (200) is mounted on the hip body (100) and is located between the left connecting piece (300) and the right connecting piece (400); The left connecting member (300) and the right connecting member (400) are both transmission-connected, and the width-adjusting structure (200) is used to drive the left connecting member (300) and the right connecting member (400) to move synchronously closer or farther away; the locking structure is used to lock the left connecting member (300) and the right connecting member (400) to the hip body (100) when the left connecting member (300) and the right connecting member (400) move to a set position.

2. The hip width adjustment device according to claim 1, characterized in that: The width adjustment structure (200) comprises an adjusting screw (210), a slider (220) and a transmission rod assembly (230), wherein the adjusting screw (210) is rotatably arranged on the hip body (100) around a vertical axis; the slider (220) is provided with a threaded hole, the slider (220) is screw-matched with the adjusting screw (210) through the threaded hole, and the slider (220) is slidably installed on the hip body (100) up and down; the transmission rod assembly (230) is hinged to the slider (220), and the left connecting member (300) and the right connecting member (400) are both hinged to the transmission rod assembly (230).

3. The hip width adjustment device according to claim 2, characterized in that: The transmission rod assembly (230) comprises an active rod (231), an intermediate transmission rod (232), a left connecting rod (233) and a right connecting rod (234), wherein the intermediate transmission rod (232) is hingedly mounted on the hip body (100), one end of the left connecting rod (233) is hingedly connected to the first end of the intermediate transmission rod (232), the other end of the left connecting rod (233) is hingedly connected to the left connecting member (300), and one end of the right connecting rod (234) is hingedly connected to 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 piece (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).

4. The hip width adjustment device according to claim 2, characterized in that: The width adjustment structure (200) further comprises a fixing block (240), a bearing (250), a bearing cover (260) and a limiting nut (270), wherein the fixing block (240) is fixedly connected to the hip body (100), and the fixing block (240) is provided with a step hole extending through in the up-down direction, the bearing (250) is fixedly arranged in the step hole, and the adjusting screw (210) is fixedly inserted into the bearing (250); the bearing cover (260) is mounted on the adjusting screw (210) and abuts against the end face of the bearing (250); the limiting nut (270) is screwed on the adjusting screw (210) and abuts against the bearing cover (260).

5. The hip width adjustment device according to claim 2, characterized in that: The width adjustment structure (200) further comprises a width adjustment handle (280), wherein the width adjustment handle (280) is fixedly mounted on the adjustment screw (210).

6. The hip width adjustment device according to any one of claims 1 to 5, characterized in that: The hip body (100) comprises 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 slide groove for slidingly cooperating with the left connecting member (300) is formed between the left cover plate (120) and the hip mounting plate (110); the right cover plate (130) is connected to the hip mounting plate (110), and a right slide groove for slidingly cooperating with the right connecting member (400) is formed between the right cover plate (130) and the hip mounting plate (110).

7. The hip width adjustment device according to claim 6, characterized in that: The locking structure comprises a first locking assembly (500) and a second locking assembly (600), wherein the first locking assembly (500) is mounted on the hip mounting plate (110) and is used to lock the left connecting member (300) to the hip body (100); and the second locking assembly (600) is mounted on the hip mounting plate (110) and is used to lock the right connecting member (400) to the hip body (100).

8. The hip width adjustment device according to claim 7, characterized in that: The hip mounting plate (110) is provided with a first locking hole (111); the left connecting member (300) is provided with a first strip-shaped hole (310) whose length extends along the sliding direction thereof; the first locking assembly (500) comprises 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-shaped hole (310) and the first locking hole (111) in sequence and is connected to the first limiting member (520); the first handle (530) comprises a first handle portion (532) and a first cam portion (531); the first cam portion (531) is spherically connected to the first locking pin (510); the first cam portion (531) is configured to press the left connecting member (300) against the hip mounting plate (110) after rotation; The hip mounting plate (110) is also provided with a second locking hole (112); the right connecting member (400) is provided with a second strip-shaped hole (410) whose length extends along its sliding direction; the second locking assembly (600) comprises a second locking pin, a second limiting member and a second handle; the second locking pin passes through the second strip-shaped hole (410) and the second locking hole (112) in sequence and is connected to the second limiting member; the second handle comprises a second handle portion and a second cam portion; the second cam portion is connected to the second locking pin by a ball joint; the second cam portion is configured to press the right connecting member (400) against the hip mounting plate (110) after rotation.

9. The hip width adjustment device according to claim 8, characterized in that: The first stopper (520) comprises a first nut, one end of the first locking pin (510) protruding from the hip mounting plate (110) is provided with a first external thread, and the first stopper (520) is threadedly connected to the first locking pin (510); The second limiting member comprises a second nut, one end of the second locking pin protruding from the hip mounting plate (110) is provided with a second external thread, and the second limiting member is threadedly connected to the second locking pin.

10. The hip width adjustment device according to claim 8, characterized in that: The first locking assembly (500) further comprises a first pressing block (540), the first pressing block (540) being sleeved on the first locking pin (510), and the first pressing block (540) being located between the left connecting member (300) and the first cam portion (531), and a first concave surface (541) being arranged on a surface of the first pressing block (540) facing the first cam portion (531), and the first concave surface (541) being used to accommodate the first cam portion (531); The second locking assembly (600) also includes a second pressure block, which is sleeved on the second locking pin and located between the right connecting member (400) and the second cam portion. The second pressure block is provided with a second concave surface on the surface facing the second cam portion, and the second concave surface is used to accommodate the second cam portion.

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