CN112245239A

CN112245239A - Locking-free hip adjusting device

Info

Publication number: CN112245239A
Application number: CN202011533120.XA
Authority: CN
Inventors: 王俊; 王通尘; 肖丹萍; 李翀; 顾捷
Original assignee: Shanghai Fourier Intelligent Technology Co ltd
Current assignee: Shanghai Fourier Intelligent Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-01-22
Anticipated expiration: 2040-12-23
Also published as: CN112245239B

Abstract

The invention discloses a locking-free hip adjusting device, which comprises a device main body, a left connecting piece, a right connecting piece and a width adjusting mechanism, wherein the left connecting piece and the right connecting piece are arranged on the device main body, the distance between the outer side ends of the left connecting piece and the right connecting piece is defined as the hip joint width, the width adjusting mechanism comprises a left adjusting component, the left adjusting component comprises a left adjusting screw rod, a left sliding block and a left driving connecting rod, the middle part of the left sliding block is provided with a left thread guide hole, the left adjusting screw rod is connected with the back of the left thread guide hole in a threaded manner, the left connecting piece is arranged on the device main body in a sliding mode, one end of the left driving connecting rod is connected to the left sliding block in a rotating mode from a preset direction forming a preset included angle with the axial direction of the left adjusting screw rod, the other end of the left driving connecting rod is connected to the inner side end of the left connecting piece in a rotating mode, and the left connecting piece is arranged on the device main body in a sliding mode.

Description

Locking-free hip adjusting device

Technical Field

The invention relates to a robot rehabilitation device, in particular to a locking-free hip adjusting device.

Background

The rehabilitation training robot, also called a lower limb robot gait training system, can provide a gait training mode which accords with the physiological characteristics of a human body, simulates the whole gait cycle process of normal walking of a person through the coordination control of a hip, a knee and an ankle, intervenes in rehabilitation training at an early stage, and accelerates the walking rehabilitation process of a patient. The novel weight-reducing support system realizes the whole-course gait training of free swinging of the pelvis at the early stage, the middle stage and the later stage. The virtual walking scene interactive system carries out real-time biofeedback, improves the psychological state of a patient, optimizes the rehabilitation effect, enables the patient to be placed in a colorful virtual walking training scene for gait training, and improves the enthusiasm of the training and the degree of active participation.

In rehabilitation training, training of the hip bone is also very important. But the configuration of the hip bone is different for different users. Therefore, the rehabilitation training set robot in the prior art is generally provided with a width adjusting mechanism capable of adjusting the hip of the rehabilitation training set robot.

For example, publication No. CN110833495A discloses a lower limb exoskeleton robot driven by a stepping motor and driven by a worm gear, wherein mounting holes arranged in a linear array manner are provided on each of a waist connecting member and a waist plate, and the waist connecting member and the waist plate are cooperatively connected through the mounting holes. When adjusting the hip joint width, the lumbar connection member needs to be completely detached from the lumbar plate. Meanwhile, the exoskeleton must be supported by external force to prevent the exoskeleton from falling down, so that the exoskeleton can be adjusted only in specific states such as a matched shelf or when a wearer sits down, and the exoskeleton needs to be adjusted twice in a left-right mode, which wastes time and labor and brings great inconvenience to the user.

The patent of publication No. CN206007541U discloses a bionical hip joint adjustment mechanism again, regulation part including fixed frame, install in guide rail and suit in on the fixed frame just can follow on the guide rail the gliding slider of guide rail, retaining member are fixed in on the slider, and the locking spanner that is used for screwing the retaining member is installed to the tip of retaining member, and through the activity of screwing spanner restriction frame, the spanner of screwing drives the retaining member arm of force longer, and is comparatively laborsaving. Similarly, this patent requires the provision of a special locking member to lock the slide to prevent the slide from continuing to slide after adjustment is completed. However, as the user uses the fastener for a long period of time, the fastener is loosened, and the resulting width is shifted. In addition, when the hip width is adjusted, the adjusting section cannot be quickly and accurately adjusted, multiple proofreading is needed, and the left and right adjustment is needed, so that the user experience is influenced.

In patent publication CN111450492A, a hip width adjustment mechanism is described, which is based on the following principle: the hip joints are respectively connected with the racks, and the bottoms of the hip joints are connected with the guide rails through the sliding blocks. The rack is meshed with the gear. The knob is rotated to drive the gear to rotate, and further drive the rack meshed with the gear to move towards the opposite direction, so as to increase or decrease the width of the hip joint.

The proposal described in the patent increases the volume and weight of the mechanism due to the application of a rack transmission and guide rail sliding block structure, and although the structure can realize the simultaneous adjustment of the left hip joint and the right hip joint, the width adjustment can only be adjusted along one horizontal direction because the included angle of the left hip joint and the right hip joint is 180 degrees.

In addition, this patent requires locking by the cooperation of the positioning boss and the positioning hole after the adjustment is completed. However, if the positioning hole and the positioning protrusion are not aligned, the left and right hip joints cannot be maintained at the adjusted width, and thus the user needs to readjust the hip joints.

Disclosure of Invention

Another advantage of the present invention is to provide a lock-free hip adjustment device that is capable of locking itself synchronously after hip width adjustment is complete, thereby reducing the number of user adjustment steps.

Another advantage of the present invention is to provide a lock-free hip adjustment device that does not require a locking mechanism on the lock-free hip adjustment device, thereby reducing the overall weight of the lock-free hip adjustment device and further improving the user experience.

It is another advantage of the present invention to provide a lock-free hip adjustment device that is capable of being synchronously maintained in an adjusted condition after adjustment is completed to prevent hip joint width shifting during subsequent use.

It is an advantage of the present invention to provide a lock-free hip adjustment device that enables synchronous movement between a left connector and a right connector, thereby enabling rapid adjustment of a hip joint width defined between the left connector and the right connector.

Another advantage of the present invention is to provide a lock-free hip adjustment device, wherein the left and right links of the lock-free hip adjustment device are capable of moving in a non-linear direction at a predetermined angle when driven to move, thereby enabling the left and right links to move in the non-linear direction.

Another advantage of the present invention is to provide a lock-free hip adjustment device that allows adjustment with a single hand of a user without requiring disassembly of any of the associated parts during adjustment.

Another advantage of the present invention is to provide a lock-free hip adjustment device that allows for a low force for adjustment during adjustment due to the elimination of the need for a locking mechanism and the use of a lead screw linkage.

Another advantage of the present invention is to provide a lock-free hip adjustment device that is simple in construction, inexpensive to manufacture, and of greater economic value.

To achieve at least one of the above advantages, the present invention provides a lock-free hip adjustment device, wherein the lock-free hip adjustment device comprises:

a device main body;

a left connector mounted to the device body; and

a right connector mounted to the device body, wherein a spacing between respective outboard ends of the left and right connectors is defined as a hip joint width;

a width adjusting mechanism, wherein the width adjusting mechanism comprises a left adjusting assembly, wherein the left adjusting assembly comprises a left adjusting screw, a left slider and a left driving connecting rod, wherein a left thread guide hole is formed in the middle of the left slider, the left adjusting screw is connected to the left thread guide hole in a threaded manner and is rotatably mounted in the device body, one end of the left driving connecting rod is rotatably connected to the left slider in a predetermined direction forming a predetermined included angle with the axial direction of the left adjusting screw, the other end of the left driving connecting rod is rotatably connected to the inner end of the left connecting piece, and the left connecting piece is slidably mounted in the device body, wherein when the left adjusting screw is rotated, the left slider slides along the axial direction of the left adjusting screw and drives the left driving connecting rod to pull the left connecting piece to slide relative to the device body, to adjust the spacing between the respective outboard ends of the left and right connectors.

According to an embodiment of the present invention, the device body forms a mounting cavity, and a left outlet is provided on a side wall of the device body, and the left connecting member passes through the left outlet from the mounting cavity.

According to an embodiment of the present invention, the lock-free hip adjustment device further includes a guiding mechanism, wherein the guiding mechanism includes a left guiding component, wherein the left guiding component is disposed on the device body, the left guiding component forms a left slideway, and the left connecting member is slidably limited on the left slideway.

According to an embodiment of the present invention, the left guide assembly includes at least one pair of left limiting posts and at least one left limiting plate, the left limiting posts are disposed at intervals to form the left slideway between the at least one pair of left limiting posts, one end of the pair of left limiting posts is disposed at the device body, the other end of the left limiting posts is mounted at the left limiting plate, the left connecting member passes through a gap between the pair of left limiting posts and is slidably disposed at the left slideway, and one end of each left limiting post is disposed at the device body and the other end of the left limiting post is mounted at the left limiting plate.

According to an embodiment of the present invention, each of the left stopper posts is mounted between the device body and the left stopper plate in a freely rotatable manner.

According to an embodiment of the present invention, the width adjusting mechanism includes a right adjusting assembly, wherein the right adjusting assembly includes a right adjusting screw, a right slider, and a right driving link, wherein a right thread guiding hole is disposed at a middle portion of the right slider, wherein the right adjusting screw is rotatably mounted in the device main body after being threadedly coupled to the right thread guiding hole, wherein one end of the right driving link is rotatably coupled to the right slider from a predetermined direction having a predetermined included angle with an axial direction of the right adjusting screw, the other end of the right driving link is rotatably coupled to an inner end portion of the right connecting member, and the right connecting member is slidably disposed in the device main body, wherein when the right adjusting screw is rotated, the right slider slides along the axial direction of the right adjusting screw and drives the right driving link to pull the right connecting member to slide relative to the device main body, to adjust the spacing between the respective outboard ends of the right connector and the right connector.

According to an embodiment of the present invention, the width adjusting mechanism includes a right adjusting assembly, wherein the right adjusting assembly includes a right adjusting screw, a right slider, and a right driving link, wherein a right thread guiding hole is disposed at a middle portion of the right slider, wherein the right adjusting screw is rotatably mounted in the device main body after being threadedly coupled to the right thread guiding hole, wherein one end of the right driving link is rotatably coupled to the right slider from a predetermined direction having a predetermined included angle with an axial direction of the right adjusting screw, the other end of the right driving link is rotatably coupled to an inner end portion of the right connecting member, and the right connecting member is slidably disposed in the device main body, wherein when the right adjusting screw is rotated, the right slider slides along the axial direction of the right adjusting screw and drives the right driving link to pull the right connecting member to slide relative to the device main body, in order to adjust the interval between the respective outside end of right connecting piece with right connecting piece, wherein guiding mechanism includes a right direction subassembly, wherein right direction subassembly is set up in the device main part, right direction subassembly forms a right slide, wherein right connecting piece is spacing in slidable ground right slide.

According to an embodiment of the present invention, the right guide assembly includes at least one pair of right positioning posts and at least one right positioning plate, the right positioning posts are disposed at intervals to form the right slide between the at least one pair of right positioning posts, one end of the pair of right positioning posts is disposed at the device body, the other end of the right positioning posts is mounted at the right positioning plate, the right connecting member passes through a gap between the pair of right positioning posts and is slidably disposed at the right slide, and one end of each right positioning post is disposed at the device body and the other end of the right positioning post is mounted at the right positioning plate.

According to an embodiment of the present invention, the width adjusting mechanism further includes a rotatable member, and the left and right adjusting screws are synchronously rotatably connected to the rotatable member.

According to an embodiment of the present invention, the width adjusting mechanism includes a right driving link, wherein one end of the right driving link is rotatably connected to the left slider from a predetermined direction forming a predetermined included angle with an axial direction of the left adjusting screw, the other end of the right driving link is rotatably connected to an inner end of the right connecting member, and the right connecting member is slidably disposed in the device main body, wherein when the left adjusting screw is rotated, the left slider slides along the axial direction of the left adjusting screw to synchronously drive the left connecting member and the right connecting member to slide away from or toward each other.

According to an embodiment of the invention, the left and right connectors are arranged to slide in non-collinear directions.

Drawings

Figure 1 shows a perspective view of a lock-free hip adjustment device according to the invention.

Figure 2 shows a schematic view of the device body of the lock-free hip adjustment device of the present invention.

Figure 3 shows a partial schematic structural view of a preferred embodiment of the lock-free hip adjustment device of the present invention.

Figures 4A and 4B are schematic views showing a partial structure of a first embodiment of a lock-free hip adjustment device according to the present invention.

Figures 5A and 5B each show a cross-sectional view of a portion of the structure of a first embodiment of a lock-free hip adjustment device in accordance with the present invention.

Figure 6 shows a schematic view of a portion of a second embodiment of a lock-free hip adjustment device according to the present invention.

Figure 7 shows an exploded view of the lock-free hip adjustment device of the present invention.

Figure 8 is a schematic view of the lock-free hip adjustment device of the present invention after the left and right links have been adjusted and slid in unison.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1-5B, a lock-free hip adjustment device according to a preferred embodiment of the present invention will be described in detail below. The lock-free hip adjustment device can be used to connect two leg support structures in a rehabilitation robot for hip rehabilitation training of a user.

The lock-free hip adjustment device comprises a device body 10, a left connecting piece 20, a right connecting piece 30 and at least one width adjusting mechanism 40. The left and

right connectors

20 and 30 are mounted on the device body, and the spacing between the respective outboard ends of the left and

right connectors

20 and 30 defines the hip joint width.

It should be noted that the "left" and "right" of the left connecting member 20 and the right connecting member 30 are only used to distinguish the positions of the left connecting member 20 and the right connecting member 30, wherein the left connecting member 20 and the right connecting member 30 may be the same as each other, but are arranged differently.

In one embodiment, the left connector 20 is slidably connected to the width adjustment mechanism 40 such that the left connector 20 can slide relative to the right connector 30 to allow the hip joint width to be adjusted.

Specifically, the width adjusting mechanism 40 includes a left adjusting assembly 41, wherein the left adjusting assembly 41 includes a left adjusting screw 411, a left slider 412 and a left driving link 413.

The middle of the left slider 412 is provided with a left thread guide hole 41201 matching with the thread on the left adjusting screw 411, wherein the left adjusting screw 411 is rotatably mounted on the device body 10 after being screwed into the left thread guide hole 41201. One end of the left driving link 413 is rotatably connected to the left slider 412 from a predetermined direction forming a predetermined included angle with the axial direction of the left adjusting screw 411. The other end of the left driving link 413 is rotatably connected to the inner end of the left connecting member 20, wherein the left connecting member 20 is slidably disposed on the device body 10, and the other end of the left connecting member 20 forms the outer end for connecting to the leg supporting structure of the rehabilitation robot.

It can be understood that, since the left slider 412 is limited by the left driving link 413 and the left connecting member 20 to slide only along the predetermined direction, but cannot synchronously rotate with the left adjusting screw 411, when the left adjusting screw 411 is rotated, the left slider 412 will slide along the axial direction of the left adjusting screw 411, so as to drive the left driving link 413 to slide along the predetermined direction. Therefore, the left connecting member 20 connected to the left driving link 413 moves along with the movement of the left driving link 413, thereby realizing the adjustment of the hip joint width.

When the left adjusting screw 411 is rotated in the opposite direction, the left slider 412 will slide in the opposite direction, so that the left connecting member 20 can slide in the opposite direction to adjust the hip joint width in the opposite direction.

It is worth mentioning that after the adjustment of the hip joint width is completed, since the force applied to the left slider 412 is only a pulling force forming a predetermined angle with the axial direction of the threaded connecting rod, and is not a force tending to rotate around the left adjusting screw 411, after the adjustment of the left adjusting screw 411 is completed, the left driving link 413 pulls the left slider 412 in the predetermined direction due to the pressure applied to the hip joint of the user at the outer end of the left connecting member 20, and therefore, the left slider 412 will be kept at a position sliding a predetermined distance in the axial direction with respect to the left adjusting screw 411.

It will be appreciated that by the above means, the hip joint width can be synchronously locked after being adjusted without separately providing a locking structure, i.e. the user completes the adjustment, i.e. the locking is synchronously completed. This can ensure that the hip joint width is stably maintained within a comfortable range required by the user, and can reduce the number of operations by the user.

On the other hand, since the lock-free hip adjustment device of the present invention does not require an additional locking structure, the entire lock-free hip adjustment device has a lighter weight than the prior art structures, which can provide a better user experience for the user.

In addition, when the width of the hip joint is adjusted, only the left adjusting screw rod needs to be adjusted, so that a user only needs to adjust with one hand.

Preferably, the apparatus body 10 forms a mounting chamber 101, and a left outlet 102 is provided on a side wall of the apparatus body 10. The left connector 20 extends from the left outlet 102 to form an outboard end for connection to a leg support structure. It can be understood that, since one end of the left connecting member 20 is connected to the left driving link 413 and the left connecting member 20 is restricted by the apparatus body 10 forming the left outlet 102 near the outer end, the left driving link 413 can slide along the predetermined direction when the left driving link 413 is driven.

Preferably, the lock-free hip adjustment device further comprises a guiding mechanism 50, wherein the guiding mechanism 50 comprises a left guiding assembly 51, wherein the left guiding assembly 51 is disposed on the device body 10. The left guide assembly 51 forms a left slide 501, wherein the left connecting member 20 is slidably disposed on the left slide 501, so that when the left connecting member 20 is driven by the left driving link 413, the left connecting member 20 can slide along the extending direction of the left slide 501.

Specifically, the left guiding assembly 51 includes at least one pair of left limiting posts 511 and at least one left limiting plate 512. The left restraint posts 511 are disposed at intervals to form the left slide 501 between at least one pair of the left restraint posts 511, and one end of each of the left restraint posts 511 is disposed on the device body 10. The other end of the left restraining post 511 is mounted to the left restraining plate 512. The left connecting member 20 passes through the gap between the pair of left limiting posts 511 and the left outlet 102, and is slidably disposed on the left slideway 501.

Preferably, the left guide assembly 51 includes a plurality of pairs of left retaining posts 511, wherein each pair of left retaining posts 511 is disposed at intervals to form the left slideway 501. More preferably, each of the left position-limiting columns 511 is freely rotatably installed between the device main body 10 and the left position-limiting plate 512, so that when the left connecting member 20 slides along the left slide track 501, the friction between the side wall of the left connecting member 20 and the left position-limiting column 511 is reduced, thereby reducing the force required by the user to adjust the left adjusting screw 411.

Further, the left adjusting assembly 41 further includes a left mounting frame 414 and a left limiting member 415. The left mounting bracket 414 is mounted to the mounting chamber 101, and the left mounting bracket 414 has a high end 4141, a low end 4142, and two vertical side portions 4143 connecting the high end 4141 and the low end 4142. The lower end portion 4142 is fixed to the mounting body 10. The high end 4141 is provided with a left through hole 414101.

The left adjusting screw 411 is disposed through the left through hole 414101 and further limited by the left limiting member 415 at the left through hole 414101, so as to prevent the left adjusting screw 411 from sliding in the vertical direction and being disengaged from the left mounting frame 414. Further, the left adjusting screw 411 is threadedly coupled to the left threaded guide hole 41201 of the left slider 412 disposed between the bottom side of the high end portion 4141 and the low end portion 4142. In this way, the left adjusting screw 411 is restrained to the apparatus main body 10 by the left mounting bracket 414.

It should be noted that the left threaded guide hole 41201 of the left slider 412 may be formed by machining itself, or may be formed by fixing a nut into the mounting hole of the left slider 412.

The left stop 415 may be implemented as a nut or a snap spring. It is worth mentioning that the left stopper 415 is configured to prevent the left adjusting screw 411 from being disengaged from the left mounting frame 414, without affecting the rotation of the left adjusting screw 411 itself. In addition, due to the limitation of the left limiting member 415, the left adjusting screw 411 does not generate a relative displacement with the surface of the device main body 10 all the time during the rotation process.

Further, the width adjustment mechanism 40 includes a right adjustment assembly 42. The right adjusting assembly 42 includes a right adjusting screw 421, a right slider 422, and a right driving link 423.

A right thread guide hole 42201 matched with the thread on the right adjusting screw 421 is formed in the middle of the right slider 422, and the right adjusting screw 421 is rotatably installed on the device body 10 after being connected to the right thread guide hole 42201 in a threaded manner. One end of the right driving link 423 is rotatably connected to the right slider 422 from a preset direction forming a predetermined included angle with the axial direction of the right adjusting screw 421. The other end inside end of the right driving link 423 is rotatably connected to the inside end of the right connecting member 30, wherein the right connecting member 30 is slidably disposed at the device main body 10, wherein the other end of the right connecting member 30 forms an outside end for connecting a leg supporting structure in the rehabilitation robot.

It can be understood that, since the right slider 422 is limited by the right driving link 423 and the right connecting member 30 and can only slide along the preset direction, but cannot synchronously rotate with the right adjusting screw 421, when the right adjusting screw 421 is rotated, the right slider 422 will slide along the axial direction of the right adjusting screw 421, so as to drive the right driving link 423 to slide along the preset direction. Therefore, the right connecting member 30 connected to the right driving link 423 moves with the movement of the right driving link 423, thereby achieving the adjustment of the hip joint width.

Similarly, when the right adjusting screw 421 is rotated in the opposite direction, the right slider 422 will slide in the opposite direction, so that the right connecting member 30 can slide in the opposite direction to adjust the hip joint width in the opposite direction.

It is understood that the positions of the respective outer ends of the left and

right links

20 and 30 relative to the device body 10 can be adjusted by the left and

right adjustment assemblies

41 and 42, respectively. That is, the adjustment of the hip joint width can be achieved by individually adjusting the left connector 20 or the right connector 30.

Further, a right outlet 103 is provided on the other side wall of the device body 10. The right connector 30 extends from the right outlet 103 to form an outboard end for connection to a leg support structure. It can be understood that, since one end of the right connecting member 30 is connected to the right actuating link 423 and the right connecting member 30 is restricted by the apparatus body 10 forming the right outlet 103 near the outer end, the right actuating link 423 can slide in the predetermined direction when the right actuating link 423 is actuated.

Also preferably, the guide mechanism 50 includes a right guide member 52, wherein the right guide member 52 is provided to the apparatus body 10. The right guide assembly 52 forms a right slide 502, wherein the right connecting member 30 is slidably retained on the right slide 502, so that when the right connecting member 30 is driven by the right driving link 423, the right connecting member 30 can slide along the extending direction of the right slide 502.

Specifically, the right guide assembly 52 includes at least one pair of right restraining posts 521 and at least one right restraining plate 522. A pair of the right retaining posts 521 is disposed at an interval to form the right slide 502 between the pair of the right retaining posts 521, and one end of the pair of the right retaining posts 521 is disposed at the device main body 10. The other end of the right restraint post 521 is mounted to the right restraint plate 522. The right connecting piece 30 sequentially passes through a gap between the pair of right limiting posts 521 and the right outlet 103, so that when the right connecting piece 30 is driven to slide, the sliding direction of the right connecting piece 30 can be limited.

Preferably, the right guide assembly 52 includes a plurality of pairs of right restraint posts 521, wherein each pair of right restraint posts is spaced apart to form the right slideway 502. More preferably, each of the right stopper posts 521 is rotatably mounted on the device body 10 and the right stopper plate 522, so that when the right connecting member 30 slides along the right slide 502, the friction between the sidewall of the right connecting member 30 and the right stopper post 521 is reduced, thereby reducing the force required by the user to adjust the right adjusting screw 421.

Further, the right adjustment assembly 42 further includes a right mounting bracket 424 and a right stop 425. The right mounting bracket 424 is configured the same as the left mounting bracket 414 and has a right through hole 42401 at the top.

The right adjusting screw 421 is disposed through the right through hole 42401, is limited by the right limiting member 425 in the right through hole 42401, and is further screwed into the right screw guiding hole 42201 to prevent the right adjusting screw 421 from sliding in the vertical direction and being disengaged from the right mounting frame 424.

It should be noted that the right screw guide hole 42201 of the right slider 422 may be formed by machining itself, or may be formed by fixing a nut into a mounting hole of the right slider 422.

Likewise, the right stop 425 may be implemented as a nut or a snap spring, etc. It is worth mentioning that the right limiting member 425 is configured to prevent the right adjusting screw 421 from being disengaged from the right mounting frame 424 without affecting the rotation of the right adjusting screw 421. In addition, due to the limitation of the right limiting member 425, the right adjusting screw 421 will not generate relative displacement with the surface of the device main body 10 during the rotation process.

In one embodiment, the width adjustment mechanism 40 further includes a rotatable member 43. The left and right adjustment screws 411, 421 are synchronously rotatably connected to the rotatable member 43.

Preferably, the left adjusting screw 411 includes a left screw portion 4111 and a left gear portion 4112, and the left screw portion 4111 is provided with a screw thread. The outer wall of the left gear portion 4112 is provided with a toothed structure. The right adjusting screw 421 includes a right screw portion 4211 and a right gear portion 4212, and the right screw portion 4211 is provided with threads. The outer wall of the right gear portion 4212 is provided with a toothed structure.

The left gear portion 4112 of the left adjustment screw 411 and the right gear portion 4212 of the right adjustment screw 421 are engaged with the rotatable member 43 to be moved in the same direction, so that when the rotatable member 43 is rotated in one direction, the left adjustment screw 411 and the right adjustment screw 421 can be rotated in opposite directions, thereby synchronously sliding the left slider 412 and the right slider 422 in the same direction. It can be understood that, by providing the screw portion of the left adjustment screw 411 and the screw portion of the right adjustment screw 421 with positive and negative threads, respectively, the left slider 412 and the right slider 422 synchronously slide in the same direction when the rotatable member 43 rotates.

The moved left slider 412 and right slider 422 will drive the left driving link 413 and right driving link 423 to synchronously slide, respectively, and further drive the left connecting member 20 and right connecting member 30 to slide, respectively. It is worth mentioning that the left connecting member 20 and the right connecting member 30 are moved away from or close to each other synchronously, so as to adjust the hip joint width rapidly.

That is, in the present embodiment, by adjusting the rotatable member 43, the left and

right links

20 and 30 can be synchronously adjusted to move the left and

right links

20 and 30 apart or close to each other.

In a second embodiment of the present invention, as shown in fig. 6-8, the lock-free hip adjustment device comprises the device body 10, the left connector 20, the right connector 30 and the width adjustment mechanism 40. The left link 20 and the right link 30 are synchronously slidably connected to the width adjusting mechanism 40.

Unlike the above-described embodiment in which the left link 20 and the right link 30 are adjusted by the rotatable member 43 to slide synchronously, in the present embodiment, the left adjustment assembly 41 and the right adjustment assembly 42 in the width adjustment mechanism 40 share one adjustment screw 401 and one slider 402, that is, the left adjustment screw 411 and the left slider 412. In addition, the left adjusting component 41 and the right adjusting component 42 of the width adjusting mechanism 40 share one mounting bracket 404 and one limiting member 405. It should be understood by those skilled in the art that the left adjusting assembly 41 and the right adjusting assembly 42 in the width adjusting mechanism 40 may also share the right adjusting screw 421 and the right slider 422.

Specifically, as shown in fig. 6 and 7, the left entrainment link 413 and the right entrainment link 423 are respectively connected to both sides of the slider 402. A threaded guide hole 40201 is formed in the middle of the slider 402, and the adjusting screw 401 is fixed to the device body 10 after being threadedly coupled to the threaded guide hole 40201.

In this embodiment, the lock-free hip adjustment device can provide a better user experience for the user, since the number of parts required for the lock-free hip adjustment device is further reduced.

More importantly, in this embodiment, when the adjusting screw 401 is rotated, the left driving link 413 and the right driving link 423 pull the adjusting screw 401 in opposite directions, so that the adjusting screw 401 is difficult to rotate and deviates from the adjusted position, and when the left connecting member 20 or/and the right connecting member 30 slides later, the adjusting screw 401 will not rotate because the left connecting member 20 or/and the right connecting member 30 will be subjected to a balancing force in opposite directions.

It is understood that, in the present embodiment, the left adjustment assembly 41 and the right adjustment assembly 42 of the adjustment mechanism share a mounting bracket 403. I.e., the left mount 414 or the right mount 424 of the above-described embodiment.

It should be noted that the device body 10 forms at least one window 104. When one of the left connecting member 20 or the right connecting member 30 is configured to be driven by the width adjusting mechanism 40 to slide or the left connecting member 20 or the right connecting member 30 is synchronously driven by the width adjusting mechanism 40 to slide, the device main body 10 is formed with the window 104, wherein the left adjusting screw 411, the right adjusting screw 421 or the rotatable member 43 is configured to extend out of the window 104 and be exposed outside the device main body 10 for the user to operate.

Furthermore, in any of the above embodiments, since the two ends of the left driving link 413 and/or the driving link 423 in the width adjusting mechanism 40 can rotate rather than slide, respectively, the sliding directions of the left connecting member 20 and the right connecting member 30 relative to the device body 10 in the lock-free hip adjustment device can be implemented out of alignment, and thus, the left connecting member 20 and the right connecting member 30 can slide in both the vertical height direction and the horizontal direction when being driven to slide. As is well known, the width of the hip joint and the height of the back assembly from the hip joint are different for different users, and the locking-free hip adjustment device can be suitable for users with different sizes because the left connecting piece 20 and the right connecting piece 30 can slide in the vertical height direction and the horizontal direction when driven by the sliding of the locking-free hip adjustment device.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A lock-free hip adjustment device, wherein the lock-free hip adjustment device comprises:

a device main body;

a left connector mounted to the device body;

a right connector mounted to the device body, wherein a spacing between respective outboard ends of the left and right connectors is defined as a hip joint width; and

2. The lock-free hip adjustment device according to claim 1, wherein the device body defines a mounting cavity and a left outlet is provided in a side wall of the device body, the left connector extending from the mounting cavity through the left outlet.

3. The lock-free hip adjustment device of claim 2, further comprising a guide mechanism, wherein the guide mechanism comprises a left guide assembly, wherein the left guide assembly is disposed on the device body, wherein the left guide assembly forms a left slideway, and wherein the left connector is slidably retained on the left slideway.

4. The lock-free hip adjustment device according to claim 3, wherein the left guide assembly comprises at least one pair of left restraining posts and at least one left restraining plate, the left restraining posts are spaced apart to form the left slideway between the at least one pair of left restraining posts, one end of each of the pair of left restraining posts is disposed on the device body, the other end of each of the left restraining posts is mounted on the left restraining plate, the left connecting member is slidably disposed on the left slideway through a gap between the pair of left restraining posts, and one end of each of the left restraining posts is disposed on the device body and the other end of each of the left restraining posts is mounted on the left restraining plate.

5. The lock-free hip adjustment device according to claim 4, wherein each of the left restraint posts is freely rotatably mounted between the device body and the left restraint plate.

6. The lock-free hip adjustment device according to claim 1 or 2, wherein the width adjustment mechanism comprises a right adjustment assembly, wherein the right adjustment assembly comprises a right adjustment screw, a right slider, and a right driving link, wherein a right threaded guide hole is provided at a middle portion of the right slider, wherein the right adjustment screw is rotatably mounted to the device body after being threadedly coupled to the right threaded guide hole, wherein one end of the right driving link is rotatably coupled to the right slider from a predetermined direction at a predetermined angle to an axial direction of the right adjustment screw, the other end of the right driving link is rotatably coupled to an inner end portion of the right connecting member, and the right connecting member is slidably disposed to the device body, wherein when the right adjustment screw is rotated, the right slider slides in the axial direction of the right adjustment screw, and the right driving connecting rod is driven to pull the right connecting piece to slide relative to the device main body so as to adjust the distance between the outer side ends of the right connecting piece and the right connecting piece.

7. The lock-free hip adjustment device according to claim 3, wherein the width adjustment mechanism comprises a right adjustment assembly, wherein the right adjustment assembly comprises a right adjustment screw, a right slider, and a right driving link, wherein the right slider has a right threaded guide hole formed at a middle portion thereof, wherein the right adjustment screw is rotatably mounted to the device body after being threaded in the right threaded guide hole, wherein the right driving link has one end rotatably connected to the right slider from a predetermined direction at a predetermined angle to an axial direction of the right adjustment screw, has the other end rotatably connected to an inner end of the right connecting member, and is slidably disposed to the device body, wherein when the right adjustment screw is rotated, the right slider slides in the axial direction of the right adjustment screw, and drive the right side and drive the connecting rod pulling the right connecting piece for the device main part slides, in order to adjust the right connecting piece with the interval between the respective outside end of right connecting piece, wherein guiding mechanism includes a right direction subassembly, wherein right direction subassembly is set up in the device main part, right direction subassembly forms a right slide, wherein right connecting piece is spacing in the right slide by slidable.

8. The lock-free hip adjustment device according to claim 7, wherein the right guide assembly comprises at least one pair of right restraining posts and at least one right restraining plate, the right restraining posts are spaced apart to form the right slideway between the at least one pair of right restraining posts, one end of each of the pair of right restraining posts is disposed on the device body, the other end of each of the pair of right restraining posts is mounted on the right restraining plate, the right connector is slidably disposed on the right slideway through a gap between the pair of right restraining posts, and one end of each of the right restraining posts is disposed on the device body and the other end of each of the right restraining posts is mounted on the right restraining plate.

9. The lock-free hip adjustment device according to claim 6, wherein the width adjustment mechanism further comprises a rotatable member, the left and right adjustment screws being synchronously rotatably connected to the rotatable member.

10. The lock-free hip adjustment device according to any one of claims 1 to 5, wherein the width adjustment mechanism comprises a right driving link, wherein one end of the right driving link is rotatably connected to the left slider from a predetermined direction at a predetermined angle with respect to the axial direction of the left adjustment screw, the other end of the right driving link is rotatably connected to the inner end of the right connecting member, and the right connecting member is slidably disposed in the device body, wherein when the left adjustment screw is rotated, the left slider slides along the axial direction of the left adjustment screw to synchronously drive the left connecting member and the right connecting member to slide away from or toward each other.

11. The lock-free hip adjustment device according to claim 10, wherein the left and right connectors are configured to slide in non-collinear directions.