CN105433538B

CN105433538B - Joint locking device and crutch chair provided with joint locking device

Info

Publication number: CN105433538B
Application number: CN201410403956.6A
Authority: CN
Inventors: 鲍志廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-15
Filing date: 2014-08-15
Publication date: 2017-05-10
Anticipated expiration: 2034-08-15
Also published as: CN105433538A

Abstract

The invention discloses a joint locking device and a crutch chair provided with the joint locking device. The joint locking device comprises a foot rest unit and a joint locking unit. The foot rest unit comprises first foot rods, and second foot rods in pivot joint with the first root rods. The joint locking unit comprises sliding rods slidably arranged at the first root rods by being opposite to the first foot rods and locking blocks which are arranged on the second foot rods and corresponds to the sliding rods. The locking blocks are provided with rotary shafts, sliding surfaces with the rotary shafts as the circular centers and locking surfaces. The distances between the locking surfaces and the rotary shafts are less than the radii of the locking surfaces of the sliding surfaces. The joint locking device and the crutch chair provided with the joint locking device have following beneficial effects: the joint locking unit can located at either locking position and unlocking position; at the locking position, the sliding rods are embedded between locking surfaces and first foot rods such that the first foot rods and the second foot rods are relatively fixed; at the unlocking position, the sliding rods are separated from the sliding surfaces such that the first foot rods can pivotally rotate relative to the second foot rods; and convenience and safety of using the crutch chair are improved.

Description

Joint locking device and the crutch chair with joint locking device

Technical field

The present invention relates to a kind of chair, more particularly to a kind of joint locking device and the crutch with joint locking device Chair.

Background technology

The movable crutch chair being typically mounted on crutch mobile jib be mainly allow user can during walking, according to The situation of oneself body and freely on the way rest to regain one's strength, therefore, crutch chair must possess it is easy to use and provide The firm effect for supporting.

Such as Patent No. US2,380,437 and Patent No. US3,999,565 United States Patent (USP), or TaiWan, China disclose the Crutch chair disclosed by No. 102113330 Patent Cases, mainly all has a support bar and can fold respectively and draw close in the support bar A combined support and a seat support, but above-mentioned existing crutch chair is when launching and folding, and user all needs the manual operation should Combined support, the convenience in use is not enough, and the foot rest of existing crutch chair does not have locking device, and the stability of structure is not Foot, if slightly not noting when using, is susceptible to traumatic injury etc. unexpected.

The content of the invention

Therefore, the present inventor is special through constantly studying and trying in view of existing crutch structure of chair and using upper disappearance Test, a kind of present invention for solving existing crutch chair disappearance is developed finally.

The main object of the present invention, is to provide a kind of joint locking device and the crutch chair with joint locking device, It can reach purpose that is easy to use and improving structural soundness.

The present invention is that the technical scheme for solving technical problem employing is；A kind of crutch chair, it includes：

Mobile jib, it is axially disposed；

Positioning seat unit, is set on mobile jib along the axial direction is slidable, and the positioning seat unit includes positioning seat and position Sliding sleeve below positioning seat；

Upper saddle, is set on mobile jib along the axial direction is slidable, and positioned at positioning seat top；

Seat unit, is pivoted and is connected to the upper saddle, and the seat unit includes seat group；

Joint locking device, includes foot rest unit and joint locking unit, and the foot rest unit includes two and is articulated in First foot lever of the positioning seat, two be articulated in respectively the second foot lever of the first foot lever, two be articulated in the sliding sleeve and respectively Bar and two are articulated in respectively between the upper saddle and the first foot lever limiting between two foot levers affects bar, the knuckle lock Order unit includes two and can slippingly be arranged on the sliding bar of the first foot lever, two ends with respect to first foot lever respectively to be fixed respectively In two sliding bars and through two first foot levers drawstring and two be respectively arranged at two second foot levers and correspondence The clamping block that the sliding bar is arranged, each clamping block has respectively rotary shaft, the sliding surface with the rotary shaft as the center of circle and slides The lock face of the slip radius surface is less than in face with the distance of the rotary shaft.

The present invention separately provides a kind of joint locking device, and it includes：

Foot rest unit, the foot rest unit includes the first foot lever and is articulated in the second foot lever of the first foot lever；And

Joint locking unit, includes sliding bar, Yi Jishe that relative first foot lever of energy is slippingly arranged on the first foot lever It is placed in the clamping block that second foot lever and correspondence sliding bar are arranged, the clamping block has rotary shaft, with the rotary shaft as the center of circle The lock face of the slip radius surface is less than in sliding surface and sliding surface with the distance of the rotary shaft.

The invention has the beneficial effects as follows：

1. the present invention cooperating using positioning seat unit, upper saddle, seat unit and foot rest unit, can improve crutch Chair ease of use.

2. the joint locking device of the present invention can the firm support effect of Crutches Available chair.

3. the present invention can coordinate joint elasticity part using drawstring, allow crutch chair to automatically switch to latched position, and user When pulling crutch chair to stowed position, joint locking unit can automatically switch to unlocked position, so the present invention is in operation, no Extra action is needed, latched position can be automatically achieved in expanded position, and the moment of stowed position movement also can reach automatically To unlocked position, convenience and safety that crutch chair is used can be lifted.

Description of the drawings

Fig. 1 is stereo appearance figure of the present invention in expanded position.

Fig. 2 is side view of the present invention in expanded position.

Fig. 3 is stereo appearance figure of the present invention in stowed position.

Fig. 4 is the sectional perspective exploded view of the present invention.

Fig. 5 is the amagnified partial perspective outside drawing of the positioning seat unit of the present invention and a foot rest unit.

Fig. 6 is the side cutaway view of positioning seat unit of the present invention and foot rest unit in expanded position.

Fig. 7 is the partial side, cross-sectional view that the present invention is converted into unlocked position by latched position.

Fig. 8 A are side cutaway view of the positioning seat unit of the present invention in stowed position.

Fig. 8 B are the partial enlarged drawings of aminoacyl site in Fig. 8 A.

Fig. 9 is sectional perspective outside drawing of the partial component of the present invention in stowed position.

Figure 10 is partial side, cross-sectional view of the seat of the present invention in stowed position.

Figure 11 is the enlarged fragmentary cross section of invention joint locking unit operation.

Specific embodiment

Hereinafter coordinate schema and the preferred embodiments of the present invention, the present invention is expanded on further to reach predetermined goal of the invention institute The technological means taken.

The present invention is to provide a kind of joint locking device and the crutch chair with joint locking device, please refer to Fig. 1 To Fig. 3, can be seen by figure, the crutch chair of the present invention includes a mobile jib 10, a positioning seat unit 20, a upper saddle 30, The joint locking device of seat unit 40 and.

Please refer to Fig. 1 and Fig. 9, the mobile jib 10 is arranged along an axial direction L, includes two along the recessed of axial L settings Rail 11, and one be arranged on limited screw 12 in the female rail 11, the female rail 11 can improve the structural strength of mobile jib 10, and can provide Track during 30 start of positioning seat unit 20 and upper saddle, to increase the stability of integrated operation.

The positioning seat unit 20 is slidably enclosed within mobile jib 10 along the axial L, includes a positioning seat 21, a sliding sleeve 22nd, a connecting rod 23 and a back-moving spring 24, the sliding sleeve 22 is arranged on the lower section of positioning seat 21, and the connecting rod 23 is to connect this to determine Position seat 21 and sliding sleeve 22, the two ends of back-moving spring 24 are connected to positioning seat 21 and upper saddle 30.

Fig. 2 is refer to, the upper saddle 30 is slidably set on mobile jib 10 along the axial L, and positioned at positioning seat 21 Top.

Fig. 1 and Fig. 2 is refer to, the seat unit 40 is to be pivoted to be connected to upper saddle 30, includes a seat group 41, two receipts The trace 43 of pole 42 and two, the folded rod 42 is connected between positioning seat 21 and seat group 41, and two traces 43 are difference It is arranged between the folded rod 42 of upper saddle 30 and two, and the two ends of each trace 43 are to be connected to the phase of upper saddle 30 and On corresponding folded rod 42.

The seat group 41 includes a main seat 411 and both sides seat 412, and the two ends of main seat 411 are formed respectively in one The outer end 414 of end 413 and, and the inner end 413 is to be connected to the upper saddle 30, and be provided with the bottom surface of main seat 411 The one hook piece 415 for being adjacent to outer end 414, both sides seat 412 is the both sides for being articulated in main seat 411 respectively, and both sides seat 412 are articulated respectively with two folded rods 42.

The joint locking device is can to convert between a latched position and a unlocked position, and it consists predominantly of a foot rest list The joint locking unit 60 of unit 50 and, the foot rest unit 50 includes two first foot levers 51, two second foot lever 52, two and limits bar 53 And two affect bar 54, two first foot lever 51 is to be articulated in the positioning seat 21, two second foot levers 52 be articulated in respectively this two One foot lever 51, the two restrictions bar 53 is that respectively between pivot joint sliding sleeve 22 and the second foot lever 52, the two ends for respectively affecting bar 54 are difference It is articulated in the foot lever 51 of upper saddle 30 and 1 first.

Fig. 4 to Fig. 6 and Figure 11 is refer to, the joint locking unit 60 includes a hook rope seat 61, and hooks rope spring 62, two Sliding bar 63, a drawstring 64, two clamping blocks 65, two joint elastic component 66 and hook groove 68, and the hook rope seat 61 is can be along the axial L Movably it is arranged on the positioning seat 21, or is slidably sheathed on mobile jib 10, and is connected to positioning seat 21, and positioned at spacing spiral shell The lower section of silk 12, the hook rope spring 62 is disposed on hooking between rope seat 61 and positioning seat 21, and two sliding bars 63 are respectively can be relative First foot lever 51 is slidably arranged on two first foot levers 51, and each sliding bar 63 has an embedded surface 631 and a banking stop 632, The two ends of the drawstring 64 are through the hook cord hole on the hook rope seat 61 and are individually fixed in two sliding bars 63, and two clamping blocks 65 are point It is not placed on two second foot levers 52, and two sliding bars 63 of correspondence, each clamping block 65 is with a rotary shaft, a sliding surface 652 and Lock face 653, the sliding surface 652 is that, with rotary shaft as the center of circle, the lock face 653 is less than the sliding surface with the distance of rotary shaft 652 radius, and lock face 653 is respectively that, in the plane for corresponding to each other, two close with the embedded surface 631 of relative sliding bar 63 Section elastic component 66 is respectively arranged between two sliding bars 63 and two first foot levers 51, and the perseverance of sliding bar 63 can be pushed against to institute Relative clamping block 65, wherein, joint elasticity part 66 can be compression spring, the hook groove 68 be disposed on the bottom surface of hook rope seat 61 and Its is opening down, and corresponding with piece 415 is hooked.

The joint locking unit 60 also includes joint mounting seat 67, and joint mounting seat 67 is located at each first foot lever 51 and can Install for the sliding bar 63 of corresponding joint elasticity part 66 and two, the joint mounting seat 67 has one for the corresponding banking stop 632 of institute The spacing perforate 671 for arranging.

Fig. 5 and Fig. 6 is refer to, in latched position, each sliding bar 63 is to be respectively embedded into clamping block to joint locking device 60 Between 65 lock face 653 and the second relative foot lever 52, and the embedded surface 631 of sliding bar 63 is chimeric lock face respectively 653, and the relative position between the first foot lever 51 and the second foot lever 52 is fixed, now, it is in relaxation state that joint elasticity part 66 is, compared with Good, the second foot lever 52 is located on the extension line of the first foot lever 51, in addition, also can be because of different designs demand, the first foot lever 51 It is that there is an angle in non-rectilinear between the bar of crus secunda 52, such as 150 degree angles.

Fig. 7, Fig. 9 and Figure 11 are refer to, it is sliding when joint locking device 60 is converted into the moment of unlocked position by latched position Moving bar 63 can depart from the lock face 653 of clamping block 65, and joint elasticity part 66 can be respectively by the foot lever 51 of sliding bar 63 and first Joint mounting seat 67 is compressed, and after joint locking device 60 reaches unlocked position, the embedded surface 631 of sliding bar 63 can be with slip The linear contact lay of face 652, makes the first foot lever 51 to pivot with respect to the second foot lever 52 respectively, and in joint locking device 60 in latched position When switching between unlocked position, banking stop 632 can be respectively in the go-and-retum sliding of spacing perforate 671, and so spacing perforate 671 can To the sliding scope for restricting sliding bar 63.

Please refer to Fig. 2 and Fig. 6, the crutch chair of the present invention in expanded position, the first foot lever 51,52 points of the second foot lever Not away from mobile jib 10, to support mobile jib 10, mobile jib 10 is set tiltedly to stand on ground, now, joint locking device is in latched position.

Please refer to Fig. 2 and Fig. 7, when crutch chair is transformed into stowed position by expanded position, by upper saddle 30 together with Positioning seat unit 20 is pulled up along mobile jib 10, and upper saddle 30 slide while, can by affect bar 54 drive positioning seat The foot lever 51 of unit 20 and first, until hooking rope seat 61 upwards against in limited screw 12, and compresses hook rope spring 62, and makes and hook rope To bottom offset, to pull drawstring 64, and sliding bar 63 can compress pass to 61 relative localization seats 21 of seat while away from lock face 653 Section elastic component 66, makes sliding bar 63 unlock with clamping block 65, is converted into unlocked position, makes to affect bar 54 to drive foot rest unit 60 foldings.

Please refer to Fig. 2 and Fig. 3, when upper saddle 30 drives folded rod 42 with positioning seat 21 as centring point by trace 43 When rotating upward, sliding on the set back of the body rail on side seat 412 of folded rod 42, and lower turn of side seat 412 is gradually drawn close In mobile jib 10, finally, main seat 411 coats mobile jib 10 with side seat 412 in U-shaped.

Please refer to Fig. 3, Fig. 8 A to Figure 10, when crutch chair is in stowed position, the first foot lever 51 respectively with crus secunda The relative doubling of bar 52, and the hook of piece 415 is hooked in hook groove 68, and make back-moving spring 24 be stretched.

When crutch chair is converted into into expanded position by stowed position, upper saddle 30 is untied into fixed from a location hook groove Position, with regard to the structure non-invention emphasis between upper saddle 30 and location hook groove, so separately not repeating, is taken advantage of a situation in promotion using gravity Slide 30 interlocks the slide downward of positioning seat unit 20, and hooks rope spring 62 and push up the hook rope relative localization seat 21 of seat 61, makes Hook piece 415 and separate with groove 68 is hooked, to release the locking of seat unit 40, and by the elastic-restoring force shortening of back-moving spring 24 The distance of slide 30 and positioning seat unit 20, and allow and affect bar 54 to affect the second foot lever 52 away from mobile jib 10.

At the same time, the second foot lever 52 drives respectively the arc surface Relative sliding bar 63 of clamping block 65 to rotate, and due to hooking Rope seat 61 have disengaged from limited screw 12 against so drawstring 64 and joint elasticity part 66 can be loosened simultaneously, in foot rest unit 50 Sliding bar 63 is set to be locked in the up conversion of clamping block 65 automatically to latched position during expansion.

The above is only the preferred embodiments of the present invention, and any pro forma restriction is not done to the present invention, though So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people Member, in the range of without departing from technical solution of the present invention, when using the technology contents of the disclosure above make it is a little change or repair The Equivalent embodiments for equivalent variations are adornd, as long as being the content without departing from technical solution of the present invention, according to the technology reality of the present invention Any simple modification, equivalent variations and modification that confrontation above example is made, still fall within the scope of technical solution of the present invention It is interior.

Claims

1. a kind of crutch chair with joint locking device, it is characterised in that the crutch chair bag with joint locking device Contain：

Mobile jib, it is axially disposed；

Positioning seat unit, is set on mobile jib along the axial direction is slidable, and the positioning seat unit includes positioning seat and positioned at fixed Sliding sleeve below the seat of position；

Joint locking device, includes foot rest unit and joint locking unit, the foot rest unit include two be articulated in this determine Position seat the first foot lever, two be articulated in respectively the second foot lever of the first foot lever, two be articulated in the sliding sleeve and crus secunda respectively Bar and two are articulated in respectively between the upper saddle and the first foot lever limiting between bar affects bar, the knuckle lock order Unit includes two and can slippingly be arranged on the sliding bar of the first foot lever, two ends with respect to first foot lever respectively and is individually fixed in this Two sliding bars and through two first foot levers drawstring and two be respectively arranged at two second foot levers and to sliding The clamping block that bar is arranged is moved, each clamping block has respectively in rotary shaft, the sliding surface with the rotary shaft as the center of circle and sliding surface The lock face of the slip radius surface is less than with the distance of the rotary shaft.

2. crutch chair according to claim 1, it is characterised in that the joint locking unit also includes two and is respectively provided with The sliding bar perseverance is pushed against the joint elasticity part to the clamping block between the sliding bar and first foot lever.

3. crutch chair according to claim 2, it is characterised in that the joint locking unit also includes can be moved along the axial direction The hook rope seat of the mobile jib is sheathed on dynamicly, and the drawstring passes through the hook rope seat.

4. crutch chair according to claim 2, it is characterised in that the joint locking unit also includes can be moved along the axial direction The hook rope seat of the positioning seat is arranged at dynamicly, and the drawstring passes through the hook rope seat.

5. crutch chair according to claim 2, it is characterised in that respectively the joint elasticity part is compression spring.

6. crutch chair according to claim 1, it is characterised in that respectively the sliding bar to should the lock face of clamping block have Embedded surface, the lock face and the embedded surface are all planes.

7. crutch chair according to claim 1, it is characterised in that the joint locking unit also includes two and is respectively provided with In the joint mounting seat of first foot lever, each joint mounting seat is respectively equipped with spacing perforate, and each sliding bar is respectively equipped with correspondence The banking stop being arranged in the spacing perforate.

8. the crutch chair according to claim 3 or 4, it is characterised in that the mobile jib also includes along recessed recessed in the axial direction Rail and it is arranged in female rail and the limited screw above the hook rope seat, the positioning seat unit also includes connection, and this is determined The connecting rod of position seat and sliding sleeve.

9. crutch chair according to claim 8, it is characterised in that the seat group has main seat, the main seat has one The individual inner end for connecting the upper saddle and an outer end, and arrange at the position of outer end in the bottom surface of the main seat There is hook piece, the joint locking unit also includes the hook rope spring being located between the hook rope seat and positioning seat, and is arranged on hook To piece and downward opening hook groove should be hooked on rope seat.

10. crutch chair according to claim 1, it is characterised in that the seat unit also includes two and is connected to this to be determined The folded rod and two traces of position seat and seat group, the two ends of each trace are connected to the folded rod and upper saddle.

11. a kind of joint locking devices, it is characterised in that the joint locking device includes：

Joint locking unit, includes relative first foot lever of energy and is slippingly arranged on the sliding bar of the first foot lever and is arranged at The clamping block that second foot lever and correspondence sliding bar are arranged, the clamping block has rotary shaft, the slip with the rotary shaft as the center of circle The lock face of the slip radius surface is less than with the distance of the rotary shaft in face and sliding surface, the joint locking unit is also included There is the joint mounting seat for being arranged on first foot lever, the joint mounting seat is provided with spacing perforate, the sliding bar is provided with and is correspondingly arranged Banking stop in the spacing perforate.

12. joint locking devices according to claim 11, it is characterised in that the joint locking unit also includes setting Sliding bar perseverance is pushed against the joint elasticity part to clamping block between the sliding bar and the first foot lever.

13. joint locking devices according to claim 12, it is characterised in that each joint elasticity part is compression spring.

14. joint locking devices according to claim 12, it is characterised in that the joint locking unit also includes one end It is fixed on the drawstring of the sliding bar.

15. joint locking devices according to claim 11, it is characterised in that the sliding bar to should clamping block locking Face has embedded surface, and the lock face and the embedded surface are all planes.