CN109157346B - Wire lifting device and wheelchair using same - Google Patents
Wire lifting device and wheelchair using same Download PDFInfo
- Publication number
- CN109157346B CN109157346B CN201811177876.8A CN201811177876A CN109157346B CN 109157346 B CN109157346 B CN 109157346B CN 201811177876 A CN201811177876 A CN 201811177876A CN 109157346 B CN109157346 B CN 109157346B
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- ring
- rope winding
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- rotating shaft
- winding ring
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- 238000004804 winding Methods 0.000 claims abstract description 111
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 6
- 210000003813 thumb Anatomy 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 210000004247 hand Anatomy 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005034 decoration Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1051—Arrangements for steering
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1056—Arrangements for adjusting the seat
- A61G5/1067—Arrangements for adjusting the seat adjusting the backrest relative to the seat portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
Abstract
The invention discloses a wire lifting device, which comprises a handle, a central rotating shaft, a rope winding ring and a wire pulling guide mechanism; the handle is provided with a sleeve extending along the length direction, and a central rotating shaft which is provided with an axial through hole, and the middle part of the central rotating shaft radially extends outwards to form a blocking edge; the rope winding ring is provided with an annular groove at the radial position, and a positioning groove for fixing a stay wire is arranged on the annular groove; the wire-pulling guide mechanism comprises a fixed ring which is used for being fixed at the cross rod, and a wire-guiding column is fixedly arranged on the fixed ring; the central rotating shaft is fixedly sleeved on the cross rod, the handle and the rope winding ring are respectively sleeved on two sides of the stop edge of the central rotating shaft, the stay wire guide mechanism is arranged on the outer side of the rope winding ring, and the penetrating channel of the lead wire column is opposite to the annular groove of the rope winding ring; the handle is rotated to drive the change of the interval between any fixed point in the annular groove of the rope winding ring and the penetrating channel of the lead post. By adopting the design, the invention provides the wire lifting device which is simple and convenient to operate and saves labor.
Description
Technical Field
The invention relates to a wire lifting device and application thereof, in particular to a wire lifting device which has a compact structure and can be sleeved on a cross rod, wherein the wire lifting device can be sleeved on a cross rod section of an armrest of a wheelchair.
Background
In some high-grade wheelchairs, in order to adjust the angle of a wheelchair cushion and/or the inclination angle of a chair back, a self-locking gas spring is often arranged, the self-locking gas spring is provided with a telescopic rod adjusting mechanism, one end of the telescopic rod adjusting mechanism is connected with a lifting wire device of a cross rod arranged at a wheelchair armrest, and the extending length of the telescopic rod of the self-locking gas spring is controlled through the lifting wire device; more specifically, the wire lifting device 1a is similar to a brake handle of a bicycle, and comprises an operating handle 11a, a fixed seat 12a, a pivot shaft 13a and a steel wire 14a, wherein the top of the fixed seat 12a is fixed on a cross rod 2a at a handrail, the operating handle 11a is in pivot connection with the fixed seat 12a through the pivot shaft 13a, the tail end of the operating handle 11a is connected with a steel wire 14a, the other end of the steel wire 14a is connected with a telescopic rod adjusting mechanism 31a of a self-locking gas spring 3a, the wire lifting device 1a is held by one hand, and then the steel wire 14a is controlled to move in a direction far away from the telescopic rod adjusting mechanism, so that the telescopic length of a telescopic rod 32a of the self-locking gas spring 3a is controlled, but in this way, the distance between the operating handle 11a and the cross rod 2a is large, and a user can keep the holding state of the operating handle 11a by applying a large force when holding the operating handle 11a, which is unfavorable for the user to operate.
In view of the above, the present inventors have made intensive studies to solve the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The first aim of the invention is to provide a wire lifting device which is easy and convenient to operate and saves labor.
A second object of the present invention is to provide a wheelchair using the above wire lifting device.
To achieve the first object, the solution of the present invention is:
a thread lifting device comprises a handle, a central rotating shaft, a rope winding ring and a thread pulling guide mechanism;
the handle is provided with a sleeve extending along the length direction, the inner cavity of the sleeve is hollow, and the sleeve is provided with a first positioning part on the end face facing the rope winding ring;
a central rotating shaft, which is provided with an axial through hole, wherein the middle part of the central rotating shaft radially extends outwards by a blocking edge;
the end face of the rope winding ring, which faces the sleeve, is provided with a second positioning part, the radial position of the rope winding ring is provided with an annular groove, and the annular groove is provided with a positioning groove for fixing a stay wire;
the wire guide mechanism comprises a fixed ring which is used for being fixed at the cross rod, a lead column is fixedly arranged on the fixed ring, a penetrating channel which allows a wire to pass through is arranged on the lead column, and the penetrating channel is opposite to the annular groove of the wire winding ring;
the central rotating shaft is fixedly sleeved on the cross rod, the handle and the rope winding ring are respectively sleeved on two sides of the central rotating shaft blocking edge, and the first positioning part and the second positioning part are mutually nested and matched; the stay wire guide mechanism is arranged at the outer side of the rope winding ring, the fixing ring is fixed on the cross rod, and the penetrating channel of the lead wire column is opposite to the annular groove of the rope winding ring; the handle is rotated to drive the change of the interval between any fixed point in the annular groove of the rope winding ring and the penetrating channel of the lead post.
Further, the outer diameter of the sleeve is conical, and the outer surface of the sleeve is provided with a plurality of anti-slip raised strips; meanwhile, a booster is fixedly arranged on the outer side wall of the sleeve inwards, the booster is a thumb button or a force application handle, the force application handle inwards extends to form a straight rod section, and the tail end of the straight rod section is provided with a circular arc transition grip part.
Further, the outer diameter ends of the two sides of the baffle edge of the central rotating shaft are respectively provided with two positioning rings, a first positioning ring and a second positioning ring are arranged on one side of the handle, and a third positioning ring and a fourth positioning ring are arranged on one side of the rope winding ring; the first positioning ring and the second positioning ring are contacted with the wall surface of the inner cavity of the sleeve, and the third positioning ring and the fourth positioning ring are contacted with the wall surface of the inner cavity of the rope winding ring.
Furthermore, the head section and the tail section of the central rotating shaft are provided with a plurality of U-shaped notches along the length direction, and the head end and the tail end of the central rotating shaft are provided with upturned clamping hook parts.
Further, two limiting blocks are arranged on the end face of the baffle edge of the central rotating shaft, which is positioned at one side of the rope winding ring, at intervals; the inner wall of the rope winding ring is provided with a clamping block, the clamping block is arranged between the two limiting blocks, and the rope winding ring is ensured to rotate between the two limiting blocks of the central rotating shaft.
Further, a first step surface is arranged in the handle, the first step surface is in clearance fit with the blocking edge of the central rotating shaft, and the first positioning part is a wave-shaped groove; the rope winding ring is internally provided with a second step surface which is in clearance fit with the blocking edge of the central rotating shaft, and the second positioning part is a wavy flange; the first positioning part and the second positioning part are mutually nested and matched.
Further, the fixing ring is provided with a notch, and a first fixing seat and a second fixing seat are respectively arranged at the two sides of the notch and positioned at the lower part of the fixing ring; the first fixing seat and the second fixing seat are respectively provided with a first through hole which penetrates through, and a second through hole is formed at the axial end of the second fixing seat; the pin shaft is sleeved in the second through hole, one end of the pin shaft is provided with a first threaded hole, the first threaded hole is opposite to the first through hole, and a bolt sequentially penetrates through the first through hole and is fixedly connected with the first threaded hole in a threaded manner, so that the pin shaft is fixed in the second through hole of the second fixing seat, and the other end of the pin shaft is provided with a second threaded hole penetrating through the pin shaft along the vertical direction; a lead post is screwed with the second threaded hole.
Further, the through channel of the lead post is arranged below the tangent line of the annular groove of the winding rope ring.
Further, the radial part of the fixed ring is at least provided with a third threaded hole, the third threaded hole is positioned at the upper part of the U-shaped notch of the central rotating shaft, a fastening screw is in threaded connection with the third threaded hole, and the tail end of the fastening screw passes through the U-shaped notch and is propped against the cross rod.
Further, the inner wall of the fixed ring is provided with a plurality of limit convex strips which are opposite to the U-shaped notch of the central rotating shaft, and the width of the limit convex strips is consistent with that of the U-shaped notch.
Further, the longitudinal section of the annular groove of the rope winding ring is in a cam shape.
Compared with the prior art, the invention has the following beneficial effects: the handle and the rope winding ring are respectively sleeved on two sides of the center rotating shaft baffle edge, the stay wire is wound in the annular groove of the rope winding ring, and the handle is rotated to drive the change of the distance between any fixed point in the annular groove of the rope winding ring and the through channel of the lead post, for example, if the device is arranged on the cross rod section at the armrest of the wheelchair, the handle is rotated to drive the stay wire in the rope winding ring to move in the direction away from the telescopic rod adjusting mechanism, so that the control of the self-locking gas spring is realized, and the height of the wheelchair cushion and/or the inclination angle of the chair back are/is realized, so that the problem that a user needs to apply a larger force to keep the holding state of the handle when holding the handle in the prior art is solved, and the use is facilitated; meanwhile, the gas spring control handle is prevented from being used as a brake handle of the wheelchair.
Further, the device also comprises a wire locking mechanism, wherein the wire locking mechanism comprises a key, a clamping ring, a torsion spring, a first limiting pin and a fixing pin; the clamping ring is positioned between the fixed ring and the rope winding ring, the clamping ring is provided with an arc-shaped swing arm, the tail end of the swing arm is fixedly connected with a key, the arc surface at the inner side of the swing arm is provided with a clamping point, meanwhile, the end part of the clamping ring is provided with a third through hole, the clamping ring is sleeved on the pin shaft through the third through hole, and the outer diameter of the third through hole is outwards extended to be provided with a first salient point; the fixing pin is arranged at the radial part of the pin shaft; the first limiting pin is arranged on the end face of the rope winding ring, facing the fixed ring, and is positioned on the inner arc surface of the swing arm and can be mutually clamped and matched with the clamping point of the swing arm; one end of a torsion spring is connected with the fixed pin, the other end of the torsion spring is connected with the first salient point, the torsion spring applies elastic force for the clamping ring to swing inwards, and the arc surface on the inner side of the swing arm of the clamping ring is always abutted against the first limiting pin.
Further, the stay wire locking mechanism further comprises a second limiting pin, the second limiting pin is arranged on the end face, facing the rope winding ring, of the second fixing seat, a second protruding point is arranged on the outer diameter of the third through hole in an outward extending mode, and the second limiting pin can be abutted against the second protruding point and used for limiting the outward swinging radian of the clamping ring.
Further, the clamping point of the swing arm is provided with an arc guide surface at the end part facing the first limiting pin, and the other end of the swing arm is provided with a recess of the back-off.
Further, a supporting ring is additionally arranged between the rope winding ring and the fixing ring.
Further, it also includes a decoration shell, the decoration shell wraps the rope winding ring and the stay wire guiding mechanism, the axial end of the decoration shell is provided with a fourth through hole opposite to the central rotating shaft through hole, the outer side surface of the decoration shell is provided with a graduated scale along the rotating path of the handle, and the handle is provided with an indication mark at the position opposite to the graduated scale.
By adopting the design, the wire winding ring is driven to link through the rotating handle, then the wire in the wire guiding column is driven to move upwards, and because the wire is always provided with downward traction force, when the clamping points of the first limiting pin in the wire winding ring and the clamping ring swing arm are clamped with each other, the palm of a user does not need to tightly screw the handle to avoid the wire winding from resetting, and other matters can be processed by loosening two hands, for example, if the wire lifting device is arranged on the cross rod section at the armrest of the wheelchair, the user can release matters for adjusting the angle of the chair back and the like, when the wire lifting device is in place, the button is moved by hands, the swing arm of the clamping ring is moved outwards, the clamping point on the swing arm is separated from the first limiting pin, the wire is rapidly driven by downward traction force to reset the wire winding ring, and the button is released when the hand is released, and the wire winding ring swings inwards to reset under the driving of the torsion spring.
In order to achieve the second purpose of the invention, the invention also discloses a wheelchair, which at least comprises an armrest with a cross rod, a self-locking gas spring, a stay wire and the wire lifting device, wherein the self-locking gas spring is arranged on a frame of the wheelchair, and the wire lifting device is sleeved on the cross rod section of the armrest; one end of the stay wire is provided with a fixing head, the stay wire is clamped in the positioning groove of the rope winding ring, the stay wire is wound in the annular groove of the rope winding ring, the other end of the stay wire penetrates through the penetrating channel of the lead wire column and is finally connected with the telescopic rod adjusting mechanism of the self-locking gas spring, and the stay wire wound in the rope winding ring is driven to move in a direction away from the telescopic rod adjusting mechanism through the rotating handle, so that the self-locking gas spring is controlled.
The wheelchair adopting the wire lifting device can very conveniently adjust the self-locking gas spring, and is convenient for users to use.
Drawings
FIG. 1 is a rear view of a prior art wheelchair;
FIG. 2 is a side view of a prior art wheelchair;
FIG. 3 is an exploded perspective view of a first embodiment of a wire lifting device according to the present invention;
FIG. 4 is a schematic view of the handle of the present invention;
FIG. 5 is a schematic view of another embodiment of the handle of the present invention;
FIG. 6 is a schematic view of the structure of the center shaft of the present invention;
fig. 7 is a cross-sectional view of the rope loop of the present invention;
FIG. 8 is a sectional view of the combination of FIG. 3;
FIG. 9 is a schematic diagram of a wire lifting device according to the present invention;
FIG. 10 is an exploded perspective view of a second embodiment of a wire lifting device of the present invention in FIG. 1;
FIG. 11 is another angular schematic view of FIG. 10;
fig. 12 is a schematic perspective view of a second embodiment of the present invention;
FIG. 13 is a front view of a second embodiment of the present invention;
fig. 14 is a schematic view of a second embodiment of a rotary handle, in which a first fixing pin and a clamping point are clamped with each other;
FIG. 15 is a schematic view showing the resetting of the second rope winding ring under the action of the wire locking mechanism according to the embodiment of the present invention;
FIG. 16 is a cross-sectional view in the direction B-B of FIG. 13;
FIG. 17 is a front cross-sectional view of FIG. 13;
FIG. 18 is a perspective view of a wheelchair of the present invention;
figure 19 is a side view of the wheelchair of the present invention.
Reference numerals:
handle 1, sleeve 11, first positioning portion 12, anti-slip protruding strip 13, thumb button 14, force application handle 15, straight bar segment 151, grip 152, first step surface 16, center shaft 2, through hole 21, blocking edge 22, first positioning ring 23, second positioning ring 24, third positioning ring 25, fourth positioning ring 26, U-shaped notch 27, hook 28, stopper 29, rope winding ring 3, second positioning portion 31, annular groove 32, positioning groove 33, clamping block 34, second step surface 35, wire pulling guide mechanism 4, fixing ring 41, notch 411, first fixing seat 412, second fixing seat 413, first through hole 414, second through hole 415, pin 416, bolt 417, first threaded hole 418, and wire pulling guide mechanism second threaded hole 419, third threaded hole 420, fastening screw 421, limit protruding strip 422, lead post 42, through passage 43, wire locking mechanism 5, key 51, clip 52, swing arm 521, clip 522, circular arc guide surface 5221, recess 5222, third through hole 523, first bump 524, second bump 525, torsion spring 53, first limit pin 54, fixing pin 55, second limit pin 56, support ring 57, decorative housing 6, fourth through hole 61, graduated scale 62, indication mark 63, upper housing 64, lower housing 65, rail section 7 of handrail, self-locking gas spring 8, wire 9, fixing head 91, frame 10, telescopic rod adjusting mechanism 110, wire lifting device 100, 100A, wheelchair 200
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 9, a first embodiment of the present invention discloses a wire lifting device 100, which comprises a handle 1, a central rotating shaft 2, a wire winding ring 3 and a wire drawing guide mechanism 4; the handle 1 is provided with a sleeve 11 extending along the length direction, the inner cavity of the sleeve 11 is hollow, and the sleeve 11 is provided with a first positioning part 12 on the end surface facing the rope winding ring 3; the central rotating shaft 2 is provided with an axial through hole 21, and a blocking edge 22 extends outwards from the middle part of the central rotating shaft in the radial direction; the end surface of the rope winding ring 3 facing the sleeve 11 is provided with a second positioning part 31, the radial position of the rope winding ring 3 is provided with an annular groove 32 for winding the stay wire 9, and the annular groove 32 is provided with a positioning groove 33 for fixing the stay wire 9; the stay wire guiding mechanism 4 comprises a fixed ring 41 which is fixed at the cross rod 7, wherein a lead wire column 42 is fixedly arranged on the fixed ring 41, the lead wire column 42 is provided with a through channel 43 for the stay wire 9 to pass through, and the through channel 43 is opposite to the annular groove 32 of the wire winding ring 3; by rotating the handle 1, this in turn brings about a change in the distance between any fixed point in the annular groove 32 of the rope loop 3 and the through channel 43 of the lead-through stud 42.
As shown in fig. 7, the longitudinal section of the annular groove 32 of the rope winding ring 3 is preferably in the shape of a cam, and the radius of the cam-shaped annular groove 32 is greatly changed, so that the handle 1 with a small angle can be rotated to move the pull wire 9 with a longer length, thereby providing a more labor-saving wire lifting device.
Further, the through channel 43 of the wire guiding post 42 is arranged below the tangent line of the annular groove 32 around the rope ring, the tangent line is excessively favorable for the movement of the wire 9, the movement track is smoother, in addition, the wire lifting device 100 is mounted on the whole wheelchair 200, the gas spring 8 is mounted below the wire lifting device 100, and the through channel 43 is arranged below the tangent line to be favorable for guiding the wire 9 to the position of the gas spring 8 (as shown in fig. 19).
The central rotating shaft 2 is fixedly sleeved on the cross rod 7, the handle 1 and the rope winding ring 3 are respectively sleeved on two sides of the blocking edge 22 of the central rotating shaft 2, preferably, a first step surface 16 is arranged in the handle 1, the first step surface 16 is in clearance fit with the blocking edge 22 of the central rotating shaft 2, and the first positioning part 12 is a wavy groove; the second step surface 35 is arranged in the rope winding ring 3, the second step surface is in clearance fit with the blocking edge 22 of the central rotating shaft 2, the second positioning part 31 is a wavy flange, the first positioning part 12 and the second positioning part 31 are in nested fit with each other, the handle 1 and the rope winding ring 3 are respectively sleeved on two sides of the blocking edge 22 of the central rotating shaft 2, the first positioning part 12 and the second positioning part 31 are in wave-shaped nested fit, so that the stress of the part is uniform, and the local stress is reduced.
The wire guiding mechanism 4 is disposed at the outer side of the rope winding ring 3, wherein the fixing ring 41 is fixed on the cross bar 7, specifically, as shown in fig. 3, the fixing ring 41 has a notch 411, and a first fixing seat 412 and a second fixing seat 413 are respectively disposed at two sides of the notch 411 and at the lower part of the fixing ring 41; the first fixing seat 412 and the second fixing seat 413 are respectively provided with a first through hole 414 penetrating therethrough, and a second through hole 415 is arranged at the axial end of the second fixing seat 413; a pin shaft 416 is sleeved in the second through hole 415, one end of the pin shaft 416 is provided with a first threaded hole 418, the first threaded hole 418 is opposite to the first through hole 415, a bolt 417 sequentially passes through the first through hole 414 and is screwed and fixed with the first threaded hole 418, so that the pin shaft 416 is fixed in the second through hole 415 of the second fixing seat 413, and the other end of the pin shaft 416 is provided with a second threaded hole 419 penetrating through the second through hole 419 along the vertical direction; a lead post 42 is threaded into second threaded bore 419. The first section and the tail section of the central rotating shaft 2 are respectively provided with a plurality of U-shaped notches 27 along the length direction, the inner wall of the fixed ring 41 is provided with a plurality of limit raised strips 422, the limit raised strips 422 are opposite to the U-shaped notches 27 of the central rotating shaft 2, the width of each limit raised strip is consistent with that of each U-shaped notch 27, the fixed ring 41 is fixed on the central rotating shaft 2, no relative rotation occurs, at the same time, the radial part of the fixed ring 41 is at least provided with a third threaded hole 420, the third threaded hole 420 is positioned at the upper part of the U-shaped notch 27 of the central rotating shaft 2, a fastening screw 421 is in threaded connection with the third threaded hole 420, and the tail end of the fastening screw 421 passes through the U-shaped notch 27 to mutually prop against the cross rod 7, so that the fixed ring 41 and the central rotating shaft 2 are fixed on the cross rod 7.
As shown in fig. 4, for aesthetic purposes, the sleeve 11 preferably has a tapered outer diameter; meanwhile, in order to facilitate the user to rotate the handle 1, a plurality of anti-slip raised strips 13 are arranged on the outer surface of the sleeve 11, or a booster is preferably fixed inwards on the outer side wall of the sleeve 11, wherein the booster is a thumb button 14, and the pull wire 9 is driven to move by rotating the thumb button 14; as shown in fig. 5, the power assisting device may be a force-applying handle 15, the force-applying handle 15 extends inward to form a straight rod segment 151, and the end of the straight rod segment 151 is provided with a circular arc transition grip 152, so that the force is saved when the handle 1 is rotated by the leverage of the grip 152 and the sleeve 11.
As shown in fig. 8, preferably, the outer diameter ends of the two sides of the blocking edge 22 of the central rotating shaft 2 are respectively provided with two positioning rings, namely a first positioning ring 23 and a second positioning ring 24, which are positioned on one side of the handle 1, and a third positioning ring 25 and a fourth positioning ring 26, which are positioned on one side of the rope winding ring 3; the first positioning ring 23 and the second positioning ring 24 are in contact with the wall surface of the inner cavity of the sleeve 11, and the third positioning ring 25 and the fourth positioning ring 26 are in contact with the wall surface of the inner cavity of the rope winding ring 3. The first positioning ring 23 and the second positioning ring 24 are adopted to position the inner cavity wall surface of the handle 1, and the third positioning ring 25 and the fourth positioning ring 26 are adopted to position the inner cavity wall surface of the rope winding ring 3, so that the whole outer end surface of the central rotating shaft 2 is replaced to be contacted with the inner cavity wall surfaces of the handle 1 and the rope winding ring 3.
Further, the head end and the tail end of the central rotating shaft 2 are provided with upturned hook portions 28, and the hook portions 28 respectively abut against and contact with the outer end surfaces of the fixed ring 41 and the handle 1, so that the fixed ring 41 and the handle 1 are limited.
In order to prevent excessive movement of the pull wire 9 wound in the annular groove 32 of the rope winding ring 3, it is preferable that the stop edge 22 of the central rotating shaft 2 is provided with two limiting blocks 29 at intervals on the end surface of one side of the rope winding ring 3; the clamping blocks 34 are arranged on the inner wall of the rope winding ring 3, and the clamping blocks 34 are arranged between the two limiting blocks 29, so that the rope winding ring 3 can rotate between the two limiting blocks 29 of the central rotating shaft 2.
Preferably, in order to prevent the rope winding ring 3 and the wire guide mechanism 4 from being exposed to the outside, to extend the service lives of the rope winding ring 3 and the wire guide mechanism 4, a decorative case 6 is sleeved on the outer circumferences of the rope winding ring 3 and the wire guide mechanism 4, the decorative case 6 is provided with an upper case 64 and a lower case 65, the axial end of the decorative case 6 is provided with a fourth through hole 61 opposite to the through hole 21 of the central rotating shaft 2, and the rope winding ring 3 and the wire guide mechanism 4 are installed in the fourth through hole 61; in order for the user to more clearly understand the angle of the rotary handle 1, a graduated scale 62 is provided on the outer surface of the decorative housing 6 along the rotational path of the handle 1, and the handle 1 is provided with an indication mark 63 at a position opposite to the graduated scale 62.
Compared with the prior art, the embodiment 1 of the invention has the following beneficial effects: the central rotating shaft 2 and the wire winding guide mechanism 4 are fixed on the cross rod 7, the handle 1 and the wire winding ring 3 are respectively sleeved on two sides of the blocking edge 22 of the central rotating shaft 2, the wire winding 9 passes through the through channel 43 of the wire winding column 42 and is wound in the annular groove 32 of the wire winding ring 3, and the change of the distance between any fixed point in the annular groove 32 of the wire winding ring 3 and the through channel 43 of the wire winding column 42 is driven by rotating the handle 1, so that the problem that the distance between the operating handle 1 and the cross rod 7 in the prior art is large, so that a user can keep the holding state of the operating handle 1 by applying a large force when holding the operating handle is solved; while avoiding the use of the handle 1 of the wire lifting device 100 (the control handle of the gas spring) as the brake handle of the wheelchair.
Referring to fig. 10 to 16, a wire lifting device 100A according to a second embodiment of the present invention is disclosed, wherein the handle 1, the central rotating shaft 2, the wire winding ring 3 and the wire guiding mechanism 4 of the wire lifting device 100A follow the wire lifting device 100 of the first embodiment, but further comprises a wire locking mechanism 5, wherein the wire locking mechanism 5 comprises a key 51, a clamping ring 52, a torsion spring 53, a first limiting pin 54 and a fixing pin 55; the clamping ring 52 is located between the fixing ring 41 and the rope winding ring 3, the clamping ring 52 has an arc-shaped swing arm 521, the end of the swing arm 521 is fixedly connected with a key 51, the inner arc surface is provided with a clamping point 522, meanwhile, the end of the clamping ring 52 is provided with a third through hole 523, the clamping ring 52 is sleeved on the pin shaft 416 by the third through hole 523, and the outer diameter of the third through hole 523 extends outwards to form a first salient point 524; the fixing pin 55 is arranged at the radial part of the pin shaft 416; the first limiting pin 54 is arranged on the end surface of the rope winding ring 3 facing the fixed ring 41, and the first limiting pin 54 is positioned on the inner circular arc surface of the swing arm 521 and can be mutually clamped and matched with the clamping point 522 of the swing arm 521; one end of a torsion spring 53 is connected with the fixed pin 55, the other end is connected with the first salient point 524, the torsion spring 53 applies elastic force for inward swinging to the clamping ring 52, and the inner circular arc surface of the swing arm 521 of the clamping ring 52 is ensured to be always abutted against the first limiting pin 54.
Further, the wire locking mechanism 5 further includes a second limiting pin 56, the second limiting pin 56 is disposed on an end surface of the second fixing seat 413 facing the wire winding ring 3, the third through hole 523 extends outward in an outer diameter and has a second protruding point 525, and the second limiting pin 56 can abut against the second protruding point 525, so as to limit the outward swinging radian of the clamping ring 52.
Further, the engagement point 522 of the swing arm 521 has an arc guiding surface 5221 at an end facing the first limiting pin 54, and has a recess 5222 at the other end thereof for facilitating the first limiting pin 54 to slide into the recess 5222 via the arc guiding surface 5221.
In order to give the clamping ring 52 a certain accommodation space for free swinging, a support ring 57 is preferably added between the rope winding ring 3 and the fixing ring 41, and the support ring (57) can be made of wear-resistant material nylon.
The beneficial effects that adopt above-mentioned design to produce are: the handle 1 is rotated to drive the rope winding ring 3 to link, and then the pull wire 9 in the lead wire column 42 is driven to move upwards, when the first limiting pin 54 of the rope winding ring 3 slides into the inner side of the clamping point 522 and can be abutted against the inverted concave part 5222 of the clamping point 522, even if the palm is completely separated from the handle 1, the first limiting pin 54 on the rope winding ring 3 is driven to rotate reversely due to the downward traction force of the pull wire 9 all the time, and finally the pull wire 9 is abutted against the concave part 5222 of the swing arm 521, the rope winding ring 3 cannot reset, a user can release other matters by hands, when the adjustment is carried out, the key 51 is stirred by hands, the swing arm 521 of the clamping ring 52 is stirred outwards, at the moment, the clamping point on the swing arm 521 is separated from the first limiting pin 54, the pull wire 9 is rapidly driven to reset by downward traction force, and the key 51 is released by hands, and the rope winding ring 3 swings inwards to reset under the driving of the torsion spring 53.
As shown in fig. 18 and 19, the present invention also discloses a wheelchair 200, where the wheelchair 200 at least includes an armrest with a cross bar 7, a self-locking gas spring 8, a pull wire 9, and a wire lifting device 100, 100A disclosed in the present invention, the self-locking gas spring 8 is installed on a frame of the wheelchair 200, and the wire lifting device 100 is sleeved on the cross bar section 7 of the armrest; one end of the pull wire 9 is provided with a fixing head 91, the fixing head 91 is clamped in the positioning groove 33 of the rope winding ring 3, the pull wire 9 is wound in the annular groove 32 of the rope winding ring 3, the other end of the pull wire 9 passes through the through channel 43 of the lead post 42 and is finally connected with the telescopic rod adjusting mechanism 110 of the self-locking gas spring 8, the pull wire 9 wound in the rope winding ring 3 is driven to move in a direction away from the telescopic rod adjusting mechanism 110 through the rotating handle 1, the self-locking gas spring 8 is controlled, and the wheelchair adopting the wire lifting device can very conveniently adjust the self-locking gas spring 8 and is convenient for a user to use.
The above examples and illustrations are not intended to limit the form or style of the present invention, and any suitable changes and modifications to them by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (17)
1. A wire lifting device (100), characterized in that: the device comprises a handle (1), a central rotating shaft (2), a rope winding ring (3) and a wire drawing guide mechanism (4);
a handle (1) having a sleeve (11) extending in a longitudinal direction, an inner cavity of the sleeve (11) being hollow, and the sleeve (11) having a first positioning portion (12) on an end face facing the rope loop (3);
a central rotating shaft (2), wherein the central rotating shaft (2) is provided with an axial through hole (21), and a blocking edge (22) extends outwards from the middle part of the central rotating shaft in a radial direction;
a rope winding ring (3), wherein the end surface of the rope winding ring (3) facing the sleeve (11) is provided with a second positioning part (31), the radial position of the rope winding ring (3) is provided with an annular groove (32), and the annular groove (32) is provided with a positioning groove (33) for fixing a stay wire (9);
a stay wire guiding mechanism (4) comprising a fixing ring (41) fixed at the cross rod, wherein the fixing ring (41) is fixedly provided with a lead post (42), the lead post (42) is provided with a through channel (43) for a stay wire (9) to pass through, and the through channel (43) is opposite to the annular groove (32) of the rope winding ring (3);
the central rotating shaft (2) is fixedly sleeved on the cross rod, the handle (1) and the rope winding ring (3) are respectively sleeved on two sides of the blocking edge (22) of the central rotating shaft (2), and the first positioning part (12) and the second positioning part (31) are mutually nested and matched; the stay wire guide mechanism (4) is arranged at the outer side of the rope winding ring (3), wherein the fixed ring (41) is fixed on the cross rod, and the through channel (43) of the lead post (42) is opposite to the annular groove (32) of the rope winding ring (3); by rotating the handle (1), the change of the distance between any fixed point in the annular groove (32) of the rope winding ring (3) and the through channel (43) of the lead post (42) is driven.
2. A wire lifting device (100) as claimed in claim 1, characterized in that: the outer diameter of the sleeve (11) is conical, and the outer surface of the sleeve is provided with a plurality of anti-slip raised strips (13); meanwhile, a booster device is fixedly arranged on the outer side wall of the sleeve (11) inwards, the booster device is a thumb button (14) or a force application handle (15), the force application handle (15) is internally extended to be provided with a straight rod section (151), and the tail end of the straight rod section (151) is provided with a grip part (152) with arc transition.
3. A wire lifting device (100) as claimed in claim 1, characterized in that: the outer diameter ends of the two sides of the baffle edge (22) of the central rotating shaft (2) are respectively provided with two positioning rings, a first positioning ring (23) and a second positioning ring (24) are arranged on one side of the handle (1), and a third positioning ring (25) and a fourth positioning ring (26) are arranged on one side of the rope winding ring (3); the first positioning ring (23) and the second positioning ring (24) are in contact with the inner cavity wall surface of the sleeve (11), and the third positioning ring (25) and the fourth positioning ring (26) are in contact with the inner cavity wall surface of the rope winding ring (3).
4. A wire lifting device (100) as claimed in claim 1, characterized in that: the head section and the tail section of the central rotating shaft (2) are provided with a plurality of U-shaped notches (27) along the length direction, and the head end and the tail end of the central rotating shaft are provided with upturned clamping hook parts (28).
5. A wire lifting device (100) as claimed in claim 1, characterized in that: two limiting blocks (29) are arranged on the end surface of the blocking edge (22) of the central rotating shaft (2) at one side of the rope winding ring (3) at intervals; the inner wall of the rope winding ring (3) is provided with a clamping block (34), the clamping block (34) is arranged between the two limiting blocks (29), and the rope winding ring (3) is ensured to rotate between the two limiting blocks (29) of the central rotating shaft (2).
6. A wire lifting device (100) as claimed in claim 1, characterized in that: a first step surface (16) is arranged in the handle (1), the first step surface (16) is in clearance fit with a blocking edge (22) of the central rotating shaft (2), and the first positioning part (12) is a wavy groove; a second step surface (35) is arranged in the rope winding ring (3), the second step surface (35) is in clearance fit with the blocking edge (22) of the central rotating shaft (2), and the second positioning part (31) is a wavy flange; the first positioning part (12) and the second positioning part (31) are mutually nested and matched.
7. A wire lifting device (100) as claimed in claim 1, characterized in that: the fixed ring (41) is provided with a notch (411), and a first fixed seat (412) and a second fixed seat (413) are respectively arranged on two sides of the notch (411) and positioned at the lower part of the fixed ring (41); the first fixing seat (412) and the second fixing seat (413) are respectively provided with a first through hole (414) which penetrates through, and meanwhile, the axial end of the second fixing seat (413) is provided with a second through hole (415); a pin shaft (416) is sleeved in the second through hole (415), a first threaded hole (418) is formed in one end of the pin shaft (416), the first threaded hole (418) is opposite to the first through hole (414), a bolt (417) sequentially penetrates through the first through hole (414) and is in threaded connection and fixation with the first threaded hole (418), so that the pin shaft (416) is fixed in a second through hole (415) of the second fixing seat (413), and a second threaded hole (419) penetrating through the other end of the pin shaft (416) is formed in the vertical direction; a lead post (42) is threaded with the second threaded bore (419).
8. A wire lifting device (100) as claimed in claim 7, characterized in that: the through channel (43) of the lead post (42) is arranged below the tangent line of the annular groove (32) of the rope winding ring (3).
9. A wire lifting device (100) as claimed in claim 7, characterized in that: the radial part of the fixed ring (41) is at least provided with a third threaded hole (420), the third threaded hole (420) is positioned at the upper part of the U-shaped notch (27) of the central rotating shaft (2), a fastening screw (421) is in threaded connection with the third threaded hole (420), and the tail end of the fastening screw (421) passes through the U-shaped notch (27) to mutually prop against the cross rod.
10. A wire lifting device (100) as claimed in claim 7, characterized in that: the inner wall of the fixed ring (41) is provided with a plurality of limit raised strips (422), the limit raised strips (422) are opposite to the U-shaped notch (27) of the central rotating shaft (2), and the width of the limit raised strips is consistent with the width of the U-shaped notch (27).
11. A wire lifting device (100) as claimed in claim 1, characterized in that: the longitudinal section of the annular groove (32) of the rope winding ring (3) is in a cam shape.
12. A wire lifting device (100) as claimed in claim 7, characterized in that: the wire pulling locking mechanism (5) comprises a key (51), a clamping ring (52), a torsion spring (53), a first limiting pin (54) and a fixing pin (55); the clamping ring (52) is positioned between the fixed ring (41) and the rope winding ring (3), the clamping ring (52) is provided with an arc-shaped swing arm (521), the tail end of the swing arm (521) is fixedly connected with a key (51), the inner arc surface of the swing arm is provided with a clamping point (522), meanwhile, the end part of the clamping ring (52) is provided with a third through hole (523), the clamping ring (52) is sleeved on the pin shaft (416) through the third through hole (523), and the outer diameter of the third through hole (523) is outwards extended to be provided with a first salient point (524); the fixing pin (55) is arranged at the radial part of the pin shaft (416); the first limiting pin (54) is arranged on the end face, facing the fixed ring (41), of the rope winding ring (3), and the first limiting pin (54) is positioned on the inner arc surface of the swing arm (521) and can be mutually clamped and matched with a clamping point (522) of the swing arm (521); one end of a torsion spring (53) is connected with the fixed pin (55), the other end of the torsion spring is connected with the first salient point (524), the torsion spring (53) applies elastic force for inwards swinging to the clamping ring (52), and the inner circular arc surface of the swing arm (521) of the clamping ring (52) is ensured to be always abutted against the first limiting pin (54).
13. A wire lifting device (100) as claimed in claim 12, characterized in that: the stay wire locking mechanism (5) further comprises a second limiting pin (56), the second limiting pin (56) is arranged on the end face of the second fixing seat (413) facing the rope winding ring (3), the outer diameter of the third through hole (523) extends outwards to form a second protruding point (525), and the second limiting pin (56) can be abutted against the second protruding point (525) to limit the outward swinging radian of the clamping ring (52).
14. A wire lifting device (100) as claimed in claim 12, characterized in that: the clamping point (522) of the swing arm (521) is provided with an arc guide surface (5221) at the end part facing the first limiting pin (54), and the other end of the swing arm is provided with a reverse buckling concave part (5222).
15. A wire lifting device (100) as claimed in claim 12, characterized in that: a supporting ring (57) is additionally arranged between the rope winding ring (3) and the fixed ring (41).
16. A wire lifting device (100) as claimed in claim 1, characterized in that: the novel rope winding device is characterized by further comprising a decorative shell (6), wherein the decorative shell (6) is used for coating the rope winding ring (3) and the wire drawing guide mechanism (4), a fourth through hole (61) opposite to the through hole (21) of the central rotating shaft (2) is formed in the axial end of the decorative shell, a graduated scale (62) is arranged on the outer side surface of the decorative shell (6) along the rotating path of the handle (1), and an indication mark (63) is arranged at the position opposite to the graduated scale (62) of the handle (1).
17. A wheelchair (200), characterized by: the wheelchair (200) at least comprises an armrest with a cross rod, a self-locking gas spring (8), a stay wire (9) and a wire lifting device (100) according to any one of claims 1-16, wherein the self-locking gas spring (8) is arranged on a frame (10) of the wheelchair (200), and the wire lifting device (100) is sleeved on a cross rod section (7) of the armrest; one end of the stay wire (9) is provided with a fixing head (91), the stay wire (9) is clamped in a positioning groove (33) of the rope winding ring (3) by the fixing head (91), the stay wire (9) is wound in an annular groove (32) of the rope winding ring (3), the other end of the stay wire (9) penetrates through a penetrating channel (43) of the lead wire column (42) and is finally connected with a telescopic rod adjusting mechanism (110) of the self-locking gas spring (8), and the stay wire (9) wound in the rope winding ring (3) is driven to move in a direction away from the telescopic rod adjusting mechanism (110) by the rotating handle (1), so that the self-locking gas spring (8) is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177876.8A CN109157346B (en) | 2018-10-10 | 2018-10-10 | Wire lifting device and wheelchair using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177876.8A CN109157346B (en) | 2018-10-10 | 2018-10-10 | Wire lifting device and wheelchair using same |
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| Publication Number | Publication Date |
|---|---|
| CN109157346A CN109157346A (en) | 2019-01-08 |
| CN109157346B true CN109157346B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811177876.8A Active CN109157346B (en) | 2018-10-10 | 2018-10-10 | Wire lifting device and wheelchair using same |
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| Country | Link |
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| CN (1) | CN109157346B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109808761B (en) * | 2019-03-18 | 2024-02-27 | 安维车件(厦门)有限公司 | Angle-adjustable armrest device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8096570B2 (en) * | 2009-10-19 | 2012-01-17 | Sunrise Medical (Us) Llc | Locking cable actuator |
| US8505946B2 (en) * | 2011-04-21 | 2013-08-13 | Young Han Joo | Wheelchair device |
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| EP1493646A2 (en) * | 2003-07-03 | 2005-01-05 | Firma Joh. Georg Hartan | Stroller for children or dolls |
| CN102711704A (en) * | 2009-11-17 | 2012-10-03 | 卞东奂 | Manual wheelchair wheel and apparatus for controlling same |
| CN102697609A (en) * | 2012-05-15 | 2012-10-03 | 博尔塔拉蒙古自治州万力源科技开发有限责任公司 | Electric wheelchair and steering control device thereof |
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| CN206630315U (en) * | 2016-11-08 | 2017-11-14 | 安吉恒林科技发展有限公司 | General pulling wire handle |
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| CN109157346A (en) | 2019-01-08 |
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