WO2016023222A1

WO2016023222A1 - Joint locking device and crutch chair having same

Info

Publication number: WO2016023222A1
Application number: PCT/CN2014/084497
Authority: WO
Inventors: 鲍志廷
Original assignee: 鲍志廷
Priority date: 2014-08-15
Filing date: 2014-08-15
Publication date: 2016-02-18
Also published as: JP6284689B2; JP2017525530A

Abstract

A joint locking device and crutch chair having the same, the joint locking device comprising a leg support unit (50) and a joint locking unit (60); the leg support comprises first leg sticks (51) and second leg sticks (52) respectively pivoted to the first leg sticks (51); the joint locking unit (60) comprises slide sticks (63) disposed on the first leg sticks (51) and enabling the sliding thereof relative to the first leg sticks (51), and locking blocks (65) disposed on the second leg sticks (52) corresponding to the slide sticks (63), each locking block (65) having a rotating shaft, a slide surface (652) using the rotating shaft as a center of circle, and a locking surface (653), a distance therefrom to the rotating shaft being less than the radius of the slide surface. The joint locking unit can switch between a locked position and an unlocked position; in the locked position, the slide sticks are embedded between the locking surfaces and the first leg sticks to allow the first leg sticks and the second leg sticks to be fixed relative to each other; in an unlocked position, the slide sticks are disengaged from the locking surfaces and linearly contact the slide surfaces to allow the first leg sticks to be pivotable relative to the second leg sticks, thus improving convenience and safety when using the crutch chair.

Description

Joint locking device and cane chair with joint locking device

Technical field

The present invention relates to a chair, and more particularly to a joint locking device and a cane chair having a joint locking device.

Background technique

The movable cane chair, which is usually installed on the main pole of the walking stick, is mainly for allowing the user to rest on the way to recover the physical strength according to the condition of the body during the walking process. Therefore, the walking stick chair must be easy to use and provide. The effect of solid support.

The cane chair disclosed in U.S. Patent No. 2, 380, 437, and U.S. Patent No. 3,999,565, or the Japanese Patent No. 102,113,330, the entire disclosure of which has a support rod and can be folded together. a set of tripods and a seat of the support rod. However, when the existing cane chair is unfolded and folded, the user needs to manually operate the set of tripods, and the convenience in use is insufficient, and the existing crutches The tripod of the chair does not have a locking device, and the stability of the structure is insufficient. If it is used, it is slightly inadvertent, and it is prone to accidents such as falls.

SUMMARY OF THE INVENTION Therefore, the present inventors have finally developed a present invention which can solve the problem of the existing cane chair without the continuous research and experiment in view of the existing structure and use of the cane chair.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a joint locking device and a cane chair having a joint locking device which can be easily used and improved in structural stability.

The technical solution adopted by the present invention to solve the technical problem is: a cane chair, which comprises:

Main rod, arranged along the axial direction;

a positioning base unit, slidably disposed along the axial direction on the main rod, the positioning base unit comprises a positioning seat and a sliding sleeve located below the positioning seat;

An upper sliding seat, slidably disposed along the axial direction on the main pole and located above the positioning seat;

a seat unit, pivotally connected to the upper slide, the seat unit comprising a seat set;

The joint locking device includes a tripod unit and a joint locking unit, the tripod unit includes two first leg pivoted to the positioning seat, and two second leg pivotally connected to the first leg respectively. The two are pivotally connected to the sliding sleeve and the first a limiting rod between the two legs, and two pulling rods respectively pivotally connected between the upper sliding seat and the first sliding rod, the joint locking unit comprises two respectively capable of sliding relative to the first standing frame a sliding rod disposed on the first leg, two ends of the sliding bar respectively fixed to the two sliding bars and passing through the two first legs, and two wires respectively disposed on the two legs and opposite The locking block provided by the sliding bar should be provided, and each locking block has a rotating shaft, a sliding surface centered on the rotating shaft, and a locking surface having a distance from the rotating shaft smaller than the radius of the sliding surface.

The present invention further provides a joint locking device including a tripod unit including a first leg and a second leg pivotally connected to the first leg; and a joint locking unit including the energy a sliding bar disposed on the first leg relative to the first leg, and a locking block disposed on the second leg and corresponding to the sliding bar, the locking block having a rotating shaft centered on the rotating shaft The sliding surface and the locking surface having a distance from the rotating shaft that is smaller than the radius of the sliding surface.

The beneficial effects of the invention are:

1. The invention utilizes the mutual cooperation of the positioning seat unit, the upper sliding seat, the seat unit and the tripod unit, thereby improving the convenience of use of the walking stick chair.

2. The joint locking device of the present invention can provide a stable supporting effect of the cane chair.

3. The present invention can utilize the drawstring to match the joint elastic member, so that the cane chair automatically switches to the locked position, and when the user pulls the cane chair to the folded position, the joint locking unit can automatically switch to the unlocked position, so the present invention is in operation , no additional action is required, the locking position can be automatically reached when the position is deployed, and the unlocking position can be automatically reached at the moment of the folding position, which can improve the convenience and safety of the cane chair. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of the present invention in a deployed position.

Figure 2 is a side elevational view of the present invention in the deployed position.

Figure 3 is a perspective view of the present invention in a folded position.

Figure 4 is a partial exploded perspective view of the present invention.

Fig. 5 is a partially enlarged perspective view showing the positioning unit and the tripod unit of the present invention.

Figure 6 is a side cross-sectional view showing the positioning unit and the stand unit of the present invention in a deployed position.

Figure 7 is a partial side cross-sectional view of the present invention transitioning from a locked position to an unlocked position.

Figure 8A is a side cross-sectional view showing the positioning unit of the present invention in the retracted position.

Fig. 8B is a partial enlarged view of the portion A in Fig. 8A.

Figure 9 is a partial perspective view of a portion of the member of the present invention in a collapsed position. Figure 10 is a partial side cross-sectional view showing the seat surface of the present invention in a collapsed position.

Figure 11 is a partially enlarged cross-sectional view showing the operation of the joint joint locking unit of the invention. detailed description

The technical means employed by the present invention for achieving the intended purpose of the invention are further described below in conjunction with the drawings and preferred embodiments of the invention.

The present invention provides a joint locking device and a cane chair having a joint locking device. Referring to FIG. 1 to FIG. 3, it can be seen that the cane chair of the present invention comprises a main pole 10 and a positioning base unit 20. An upper slide 30, a seat unit 40 and a joint locking device.

Referring to FIG. 1 and FIG. 9 , the main rod 10 is disposed along an axial direction L, and includes two concave rails 11 disposed along the axial direction L, and a limiting screw 12 disposed in the concave rail 11 . The concave rail 11 can improve the structural strength of the main rod 10, and can provide a track when the positioning base unit 20 and the upper sliding seat 30 are actuated to increase the stability of the overall operation.

The locating block unit 20 is slidably disposed on the main rod 10 along the axial direction L, and includes a positioning seat 21, a sliding sleeve 22, a connecting rod 23 and a return spring 24. The sliding sleeve 22 is disposed at the positioning seat Below the 21, the connecting rod 23 is connected to the positioning seat 21 and the sliding sleeve 22. The two ends of the return spring 24 are respectively connected to the positioning seat 21 and the upper sliding seat 30.

Referring to FIG. 2, the upper slide 30 is slidably disposed on the main rod 10 along the axial direction L and above the positioning base 21.

Referring to FIG. 1 and FIG. 2, the seat unit 40 is pivotally connected to the upper sliding seat 30, and includes a seat panel 41, two folding levers 42 and two linkage rods 43. The folding lever 42 is connected to Between the positioning seat 21 and the seat surface group 41, the two linkage rods 43 are respectively disposed between the upper sliding seat 30 and the two folding rods 42, and the two ends of the interlocking rods 43 are respectively connected to the upper sliding seat. 30 and a corresponding folding lever 42.

The chair set 41 includes a main seat surface 411 and two side seat surfaces 412. The two ends of the main seat surface 411 respectively define an inner end portion 413 and an outer end portion 414, and the inner end portion 413 is connected thereto. The sliding seat 30 is disposed on the bottom surface of the main seat surface 411 with a hook piece 415 adjacent to the outer end portion 414. The two side chair surfaces 412 are respectively pivotally connected to the two sides of the main seat surface 411, and the two side seat surfaces 412 are respectively The two folding levers 42 are pivotally connected.

The joint locking device is switchable between a locked position and an unlocked position, and mainly includes a tripod unit 50 and a joint locking unit 60. The tripod unit 50 includes two first legs 51 and two second legs. a rod 52, two limiting rods 53 and two pulling rods 54. The two first foot rods 51 are pivotally connected to the positioning base 21, and the two second foot rods 52 are pivotally connected to the two first foot rods 51, respectively. The limiting rods 53 are respectively pivotally connected between the sliding sleeve 22 and the second foot rod 52. The two ends of each of the pulling rods 54 are respectively pivotally connected to the upper sliding seat 30 and the first footrest 51. Referring to FIG. 4 to FIG. 6 and FIG. 11 , the joint locking unit 60 includes a hook base 61 , a hook rope spring 62 , two sliding rods 63 , a pull cord 64 , two locking blocks 65 , and two joint elastic members 66 . And a hook groove 68, the hook base 61 is movably disposed on the positioning seat 21 along the axial direction L, or slidably sleeved on the main rod 10, and connected to the positioning seat 21, and is located at the limit position Below the screw 12, the hook spring 62 is disposed between the hook base 61 and the positioning seat 21, and the two sliding rods 63 are respectively slidably disposed on the first foot rods 51 with respect to the first foot rod 51, Each of the sliding rods 63 has an insertion surface 631 and a limiting piece 632. The two ends of the pulling rope 64 pass through a hook hole on the hook base 61 and are respectively fixed to the two sliding rods 63. 65 is respectively disposed on the two second leg rods 52, and corresponding to the two sliding rods 63. Each locking block 65 has a rotating shaft, a sliding surface 652 and a locking surface 653. The sliding surface 652 is centered on the rotating shaft. The distance between the locking surface 653 and the rotating shaft is smaller than the radius of the sliding surface 652, and the locking surface 653 and the embedded surface 631 of the opposite sliding rod 63 are respectively In the corresponding plane, the two joint elastic members 66 are respectively disposed between the two sliding rods 63 and the two first foot rods 51, and the sliding rods 63 can be constantly pushed against the opposite locking blocks 65, wherein The joint elastic member 66 may be a compression spring. The hook groove 68 is disposed on the bottom surface of the hook base 61 and has an opening facing downward, and corresponds to the hook piece 415.

The joint locking unit 60 further includes a joint mounting seat 67. The joint mounting seat 67 is disposed on each of the first leg rods 51 and is detachable for the corresponding joint elastic member 66 and the two sliding rods 63. The joint mounting seat 67 has a The limit opening 671 is provided corresponding to the limiting piece 632.

Referring to FIGS. 5 and 6, when the joint locking device 60 is in the locked position, each of the sliding levers 63 is respectively inserted between the locking surface 653 of the locking block 65 and the opposite second leg 52, and the sliding lever 63 is The insertion surface 631 is respectively engaged with the locking surface 653 to fix the relative position between the first leg 51 and the second leg 52. At this time, the joint elastic member 66 is in a relaxed state, and preferably, the second leg 52 is provided. It is located on the extension line of the first leg 51. In addition, due to different design requirements, the first leg 51 and the second leg 52 are non-linear and have an angle, such as a 150 degree angle.

Referring to FIG. 7, FIG. 9 and FIG. 11, when the joint locking device 60 is changed from the locked position to the unlocked position, the sliding lever 63 will be disengaged from the locking surface 653 of the locking block 65, and the joint elastic members 66 will be respectively slidable. 63 is compressed with the joint mounting seat 67 on the first leg 51. When the joint locking device 60 reaches the unlocked position, the inserting surface 631 of the sliding rod 63 can be in line contact with the sliding surface 652, so that the first foot 51 can be respectively separated. The second leg 52 pivots relative to the second leg 52, and when the joint locking device 60 is switched between the locked position and the unlocked position, the limiting piece 632 slides between the two ends of the limiting opening 671, such that the limiting opening 671 It can be used to restrict the slip range of the slip bar 63.

Referring to FIG. 2 and FIG. 6 , when the cane chair of the present invention is in the deployed position, the first foot bar 51 and the second foot bar 52 are respectively away from the main pole 10 to support the main pole 10 so that the main pole 10 can stand obliquely Ground, at this time, the joint locking device is In the locked position.

Referring to FIG. 2 and FIG. 7, when the cane chair is changed from the deployed position to the folded position, the upper sliding seat 30 and the positioning base unit 20 are pulled up along the main rod 10, and the upper sliding seat 30 is slidable. The positioning rod unit 61 and the first foot rod 51 are driven by the pulling rod 54 until the hook line seat 61 abuts against the limiting screw 12, and the hook rope spring 62 is compressed, so that the hook rope seat 61 is lowered relative to the positioning seat 21 Displacement to pull the drawstring 64, while the slide bar 63 compresses the joint elastic member 66 away from the locking surface 653, unlocking the slide bar 63 and the lock block 65, shifting to the unlocked position, and causing the pull rod 54 to drive the foot The frame unit 60 is folded.

Referring to FIG. 2 and FIG. 3, when the upper sliding seat 30 drives the folding lever 42 to rotate the positioning seat 21 upward by the linkage lever 43, the folding lever 42 is disposed on the side seat surface 412. The back rail slides, and the side seat surface 412 is gradually turned closer to the main rod 10. Finally, the main seat surface 411 and the side seat surface 412 are U-shaped to wrap the main rod 10.

Referring to FIG. 3 and FIG. 8A to FIG. 10, when the cane chair is in the folded position, the first foot bar 51 is opposite to the second foot bar 52, and the hook piece 415 is hooked on the hook groove 68, and is reset. The spring 24 is stretched.

When the crutches chair is changed from the folding position to the unfolding position, the upper sliding seat 30 is disengaged from a positioning hook groove. The structure between the upper sliding seat 30 and the positioning hook groove is not the focus of the present invention, so no further details are provided. The gravity sliding device 30 is used to push the upper sliding seat 30 to slide the positioning base unit 20 downward, and the hook rope spring 62 pushes the hooking rope seat 61 upward relative to the positioning seat 21 to separate the hook piece 415 from the hook groove 68 to release the seat. The locking of the unit 40 and the distance between the upper carriage 30 and the locating base unit 20 are shortened by the elastic restoring force of the return spring 24, and the pulling rod 54 is caused to move the second leg 52 away from the main rod 10.

At the same time, the second leg 52 drives the arcuate surface of the locking block 65 to rotate relative to the sliding rod 63, and since the hooking seat 61 has been disengaged from the limiting screw 12, the cord 64 and the joint can be simultaneously relaxed. The elastic member 66 automatically locks the sliding lever 63 to the locking block 65 to the locked position when the tripod unit 50 is deployed.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, any one skilled in the art, The equivalents of the above-disclosed technical changes may be modified or modified to equivalent variations, without departing from the technical scope of the present invention, without departing from the technical scope of the present invention, the technology according to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the technical solutions of the present invention.

Claims

Claim

A cane chair having a joint locking device, wherein the cane chair having a joint locking device includes a main rod disposed axially;

a positioning base unit, slidably disposed along the axial direction on the main rod, the positioning base unit includes a positioning seat, and a sliding sleeve located below the positioning seat;

The joint locking device includes a tripod unit and a joint locking unit, the tripod unit includes two first leg pivoted to the positioning seat, and two second leg pivotally connected to the first leg respectively. Two restricting rods respectively pivotally connected between the sliding sleeve and the second leg, and two pulling rods respectively pivotally connected between the upper sliding seat and the first sliding rod, the joint locking unit comprises two a sliding rod disposed on the first leg relative to the first leg, respectively, and two ends of the sliding bar fixed to the two sliding bars and passing through the two first legs, and two respectively a locking block disposed on the two second legs and corresponding to the sliding rods, each locking block having a rotating shaft, a sliding surface centered on the rotating shaft, and a distance from the rotating shaft being smaller than a radius of the sliding surface The locking surface.

2 . The cane chair according to claim 1 , wherein the joint locking unit further comprises two respectively disposed between the sliding bar and the first leg and the sliding bar is constantly pushed against The joint elastic of the locking block.

The cane chair according to claim 2, wherein the joint locking unit further comprises a hook seat that is sleeved on the main rod in the axial direction, and the drawstring passes through the hook rope seat.

The cane chair according to claim 2, wherein the joint locking unit further comprises a hook seat that is movably disposed in the positioning seat along the axial direction, and the drawstring passes through the hook base .

The cane chair according to claim 2, wherein each of the joint elastic members is a compression spring.

The cane chair according to claim 1, wherein each of the sliding bars has an insertion surface corresponding to a locking surface of the locking block, and the locking surface and the insertion surface are both planar.

The cane chair according to claim 1, wherein the joint locking unit further comprises two joint mounting seats respectively disposed on the first foot rod, and each joint mounting seat is respectively provided with a limiting opening, and Each of the sliding bars is respectively provided with a limiting piece corresponding to the limiting opening.

The cane chair according to claim 3 or 4, wherein the main rod further comprises along the axis a concave guide rail, and a limiting screw disposed in the concave rail and located above the hook rope seat, the positioning base unit further comprising a connecting rod connecting the positioning seat and the sliding sleeve.

The cane chair according to claim 8, wherein the seat set has a main seat surface, the main seat surface has an inner end portion connecting the upper sliding seat and an outer end portion, and the main seat portion a hook piece is disposed at a position of the bottom surface of the seat surface adjacent to the outer end portion, the joint locking unit further includes a hook rope spring disposed between the hook rope seat and the positioning seat, and correspondingly disposed on the hook rope seat And the hook groove with the opening facing down.

The cane chair according to claim 1, wherein the seat unit further comprises two folding levers connected to the positioning seat and the seat cover group, and two linkage bars, each of the linkage bars The two ends are respectively connected to the folding lever and the upper sliding seat.

11. A joint locking device, characterized in that the joint locking device comprises:

a tripod unit, the tripod unit includes a first leg and a second leg pivoted to the first leg; and a joint locking unit including a first leg that is slidably disposed relative to the first stand a sliding bar, and a locking block disposed on the second leg and corresponding to the sliding bar, the locking block having a rotating shaft, a sliding surface centered on the rotating shaft, and a distance from the rotating shaft is smaller than the sliding The locking surface of the face radius.

The joint locking device according to claim 11, wherein the joint locking unit further comprises a joint disposed between the sliding rod and the first leg to push the sliding rod against the locking block Elastic parts.

The joint locking device according to claim 12, wherein each of the joint elastic members is a compression spring.

The joint locking device according to claim 12, wherein the joint locking unit further comprises a drawstring having one end fixed to the slide bar.

The joint locking device according to claim 11, wherein the sliding lever has an insertion surface corresponding to the locking surface of the locking block, and the locking surface and the insertion surface are both planar.

The joint locking device according to claim 11, wherein the joint locking unit further comprises a joint mounting seat disposed on the first foot rod, the joint mounting seat is provided with a limiting opening, the sliding rod A limiting piece corresponding to the limiting opening is provided.