CN203969491U - A kind of crutch - Google Patents
A kind of crutch Download PDFInfo
- Publication number
- CN203969491U CN203969491U CN201420433870.3U CN201420433870U CN203969491U CN 203969491 U CN203969491 U CN 203969491U CN 201420433870 U CN201420433870 U CN 201420433870U CN 203969491 U CN203969491 U CN 203969491U
- Authority
- CN
- China
- Prior art keywords
- bolt
- pole
- bulb
- ball groove
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Rehabilitation Tools (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
The utility model discloses a kind of crutch, draw together base, pole, the lower end of pole arranges the bulb that rotates use, and base is established ball putting groove, and bulb rotates under the constraint of ball groove; Base Qiu Cao center arranges bolt of lower base via hole, and the bulb center of pole also arranges bolt through-hole; Bolt is started by the lower end of base, after bolt through-hole through base and pole, be socketed driving spring from bottom to top, the upper end of butt driving spring after nut is connected with bolt, the lower end of driving spring and the end of bulb connect, the difference of the diameter of bolt of lower base via hole and diameter of bolt diameter is 0.5 to 2.6 millimeter, poor by the diameter between control bolt and the bolt through-hole of base, guarantee that the slant range between pole and base reaches optimization, both meet the requirement of the scope of application, reduced again the crutch danger that may bring of breakking away.
Description
Technical field
The utility model relates to one way of life articles for use, particularly a kind of crutch.
Background technology
Crutch comprises base and pole, and the lower end of pole is connected with base, and the upper end of pole arranges handle, the lower end of base is provided with a plurality of legs, make base more stable with contacting of ground, in order to make pole can adapt in use different support requirements, between pole and base, use spherical pair to be connected, the lower end that is pole arranges rotation bulb, base is established ball putting groove, base Qiu Cao center arranges bolt through-hole, the bulb center of pole also arranges bolt through-hole, bolt is socketed driving spring through after via hole, one end of butt driving spring after nut is connected with bolt, the other end of driving spring and the end of bulb connect, in the time that pole is not subject to External Force Acting, between the effect lower fulcrum bar of driving spring and base, keep stablizing annexation, normally pole and base are perpendicular, in the time that gripping handle applies external force to pole, pole drives bulb to rotate, bolt rotates around spherical pair with pole, bolt makes bulb and nut produce compression to driving spring after rotating, now, the leg of base still keeps stable with ground and contacts, the connection angle run-off the straight of pole and base, thus adapt to concrete instructions for use, angle change scope between pole and base is mainly determined by the difference of the bolt through-hole diameter of the diameter of bolt and base ball groove, range of tilt angles between the less pole of difference and base is less, and the range of tilt angles between the larger pole of difference and base is larger.
The shortcoming of prior art is: the scope control at the angle of inclination between pole and base is improper, and inclination angle scope hour can not meet the demands the best scope of application of crutch; When inclination angle scope is large, the frictional force that easily causes base and ground is not enough and form and break away, thereby causes danger.
Utility model content
The utility model is in order to overcome defect in above-mentioned prior art, poor by the diameter between control bolt and the bolt through-hole of base, guarantee that the slant range between pole and base reaches optimization, both met the requirement of the scope of application, reduce again the crutch danger that may bring of breakking away.
The utility model provides a kind of crutch, draws together base, pole, pole, is pipe structure, and the lower end of pole arranges the bulb that rotates use, and bulb and pole are fastenedly connected, and the upper end of pole arranges handle, base, lower end is provided with a plurality of legs, makes base more stable with contacting of ground, and base is also established ball putting groove, and described bulb rotates under the constraint of ball groove, and bulb forms with ball groove the spherical pair that pole is connected with base, the back side of ball groove is non-spherical structure or not concentric with ball groove spherical structure, and the centre of sphere of ball groove arranges the bolt through-hole that connects ball groove to the beeline direction at the ball groove back side, and described bulb axially also arranged the bolt through-hole centre of sphere, that connect along pole, bolt is started by the back side of ball groove, from bottom to top through being socketed driving spring after the bolt through-hole of ball groove and the bolt through-hole of bulb, bolt head is connected to around the bolt through-hole at the ball groove back side, the difference of the diameter of bolt of lower base via hole and diameter of bolt diameter is 0.5 millimeter to 2.8 millimeters, nut is connected to the upper end of driving spring after being connected with bolt, the lower end of driving spring and the end of bulb connect, make the driving spring generation elastic force that is squeezed, the centre of sphere of pole taking spherical pair as constraint rotation formation taking bulb is the conical outline line on summit, bolt rotates around the centre of sphere of bulb with pole, make the drift angle scope control of conical motion of described pole within the scope of 4.5 to 25 degree, after bolt rotates, the butt position at bolt head and the ball groove back side is departed from the centre of sphere distance of bolt through-hole increase and the ball groove of ball groove gradually, make nut and bulb produce larger compression to driving spring, the angle departing from is to bolt and ball slot bolt via hole, while discharging pole, under the effect of driving spring restoring force, bolt head is returned to around the bolt through-hole of ball groove again, thereby drive pole return.
In technique scheme, the minimum distance apart from the centre of sphere of ball groove when bolt head and ball groove back side butt is 13 to 13.7 millimeters.
Preferably, the diameter of bolt of lower base via hole and the difference of the diameter of bolt are 1.7 to 2.6 millimeters, and the drift angle of the conical wheel profile of described pole motion is at 15 to 21.2 degree.
In technique scheme, the diameter of bolt is 8 millimeters, makes the cost of crutch and reliability reach optimum balance, the diameter of bolt is meticulous, is prone in use bending, and the diameter of bolt is excessively thick, the weight that also increases crutch when causing cost to rise, affects the use of crutch.
In technique scheme, bolt gap is through the bolt through-hole of bulb, and the difference of the bolt through-hole diameter of the diameter of bolt and bulb is between 0.1 to 0.5 millimeter, and optimum point is at 0.2 millimeter.
In technique scheme, the ball groove back side is plane apart from the face at the some place of the minimum distance of the centre of sphere of ball groove, makes the butt of bolt head and plane keep the laminating of face and face, guarantees that pole can keep the most stable state in this position.
In technique scheme, the upper end of bulb arranges socket post, and socket post is column, socket post is firmly socketed on the lower end of pole, bulb is firmly connected with pole, and the bolt through-hole of bulb connects socket post, and the socket upper end of post and the lower end of driving spring connect.
In technique scheme, between nut and back-moving spring, pad is set, makes nut more even to compressing along whole back-moving spring end of back-moving spring, avoid nut unbalance stress to cause and get loose.
In technique scheme, the junction outer cover of the spherical pair of base and pole is taken over control dust hood, and the two ends of dust cover by the upper surface sealing of pole lower end and base, can not enter between bulb and ball groove outside dust respectively.
In technique scheme, the lower end of base arranges bottom, and bottom and base are fastenedly connected, and leg and bottom are fastenedly connected.
Compared with prior art, the utility model is poor by the diameter between control bolt and the bolt through-hole of base, and when controlling bolt head and the ball groove back side butt distance of bolt head and the centre of sphere, guarantee that the slant range between pole and base reaches optimization, both meet the requirement of the scope of application, reduced again the crutch danger that may bring of breakking away; By the diameter of bolt is arranged on to eight millimeter, make the cost of crutch and reliability reach optimum balance; By dust cover is set, outside dust can not be entered between bulb and ball groove, guarantee the working life of bulb and ball groove.
Brief description of the drawings
Fig. 1 is the exploded perspective view of a kind of crutch of the present utility model;
Fig. 2 is the cutaway view of a kind of crutch of the present utility model;
Fig. 3 is the cutaway view (bulb rotation) of a kind of crutch of the present utility model;
Fig. 4 is the stereogram (complete assembling) of a kind of crutch of the present utility model.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-base, 11-ball groove, 12-bolt through-hole, the 13-ball groove back side, 131-plane, 2-bottom, 21-leg, 3-bolt, 31-bolt head, 311-bearing surface, 4-bulb, 41-is socketed post, 42-bolt through-hole, 5-driving spring, 6-pad, 7-nut, 8-dust cover, 9-pole.
Detailed description of the invention
Below in conjunction with accompanying drawing, a detailed description of the invention of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of detailed description of the invention.
A kind of crutch of the present utility model as shown in Figure 1, 2, 3, is drawn together base 1, pole 9, pole 9, is pipe structure, and the lower end of pole 9 arranges the bulb 4 that rotates use, and bulb 4 is fastenedly connected with pole 9, and the upper end of pole 9 arranges handle (not shown), the lower end of base 1 arranges bottom 2, bottom 2 is fastenedly connected with base 1, bottom 2 lower ends are provided with a plurality of legs, make base 1 more stable with contacting of ground, ball putting groove 11 is also established in base 1 upper surface, described bulb 4 rotates under the constraint of ball groove 11, and bulb 4 forms with ball groove the spherical pair that pole is connected with base, the back side of ball groove is non-spherical structure or not concentric with ball groove 11 spherical structure, the centre of sphere of ball groove 11 arranges the bolt through-hole 12 that connects ball groove 11 to the beeline direction at the ball groove back side 13, and described bulb 4 axially also arranged bolt through-hole 42 centre of sphere, that connect along pole 1, bolt 3 is started by the back side 13 of ball groove, from bottom to top through the bolt through-hole 12 of ball groove and the rear socket driving spring 5 of the bolt through-hole 42 of bulb, bolt head 31 is connected to (Fig. 2) around the bolt through-hole 12 at the ball groove back side 13, the difference of the diameter of bolt of lower base via hole 12 and bolt 3 diameter diameters is 0.5 millimeter to 2.8 millimeters, nut 7 is connected to the upper end of driving spring 5 after being connected with bolt 3, the end of the lower end of driving spring 5 and bulb 4 connects, make the driving spring 5 generation elastic force that is squeezed, pole 9 forms the outline line of the conical motion rotating as summit and with pole taking the centre of sphere of bulb 4 in the time that constraint is rotated taking spherical pair, bolt 3 rotates around the centre of sphere of bulb with pole 9, make the drift angle scope control of conical motion of described pole within the scope of 4.5 to 25 degree, after bolt 3 rotations, the butt position at bolt head 31 and the ball groove back side 13 is departed from the distance of bolt through-hole 12 increase and the centre of sphere of ball groove gradually, make nut 7 and bulb 4 produce larger compression to driving spring 5, while discharging pole 9, under driving spring 5 restoring force effects, bolt head 31 is returned to around the bolt through-hole 12 of ball groove again, thereby drive pole 9 returns.
Further as shown in Figure 2,3, the minimum distance apart from the centre of sphere of ball groove when bolt head 31 is with the ball groove back side 13 butt is 13 to 13.7 millimeters; The diameter of bolt of lower base via hole 12 and the difference of bolt 3 diameters optimized are 1.7 to 2.6 millimeters, and the drift angle that the conical wheel profile of described pole motion is optimized is at 15 to 21.2 degree; Bolt 3 gaps are through the bolt through-hole 42 of bulb, and the difference of bolt through-hole 42 diameters of bolt 3 diameters and bulb is between 0.1 to 0.5 millimeter, and optimum point is at 0.2 millimeter.
Further as shown in Figure 1, 2, 3, the face at the some place of the minimum distance of the ball groove back side 13 centre ofs sphere apart from ball groove is plane 131, make the bearing surface 311 and the laminating that the butt of plane 131 keeps face and face of bolt head 31, guarantee that pole can keep the most stable state in this position.
Further as shown in Figure 1, 2, eight millimeters of bolt 3 diameters, make the cost of crutch and reliability reach optimum balance, the diameter of bolt is meticulous, is prone in use bending, and the diameter of bolt is excessively thick, the weight that also increases crutch when causing cost to rise, affects the use of crutch.
Further as shown in Figure 1, 2, 3, the upper end of bulb 4 arranges socket post 41, socket post 41 is one-body molded with bulb 4, socket post 41 is column, firmly be socketed on the lower end of pole 9, bulb 4 is firmly connected with pole 9, and the bolt through-hole 42 of bulb connects socket post 41, and the socket upper end of post 41 and the lower end of driving spring 5 connect.
Further as shown in Figure 1, 2, 3, between nut 7 and back-moving spring 5, pad 6 is set, makes nut 7 more even to compressing along whole back-moving spring end of back-moving spring 5, avoid nut unbalance stress to cause and get loose.
Further as shown in Figure 2,3, 4, base 1 is taken over control dust hood 8 with the junction outer cover of the spherical pair of pole 9, and the two ends of dust cover 8 by the upper surface sealing of the lower end of pole 9 and base 1, can not enter between bulb 4 and ball groove 11 outside dust respectively.
Compared with prior art, the utility model is poor by the diameter between control bolt and the bolt through-hole of base, and when controlling bolt head and the ball groove back side butt distance of bolt head and the centre of sphere, guarantee that the slant range between pole and base reaches optimization, both meet the requirement of the scope of application, reduced again the crutch danger that may bring of breakking away; By the diameter of bolt is arranged on to eight millimeter, make the cost of crutch and reliability reach optimum balance; By dust cover is set, outside dust can not be entered between bulb and ball groove, guarantee the working life of bulb and ball groove.
Disclosed is above only a specific embodiment of the present utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.
Claims (9)
1. a crutch, draws together base, pole, it is characterized in that, pole, is pipe structure, and the lower end of pole arranges the bulb that rotates use, and bulb and pole are fastenedly connected, base, lower end is provided with a plurality of legs, and ball putting groove is established in base upper end, and described bulb is embedded in ball groove and rotates under the constraint of ball groove, and bulb forms with ball groove the spherical pair that pole is connected with base, the back side of ball groove is non-spherical structure or not concentric with ball groove spherical structure, and the centre of sphere of ball groove arranges the bolt through-hole that connects ball groove to the beeline direction at the ball groove back side, bulb axially also arranged the centre of sphere along pole, the bolt through-hole connecting, bolt is started by the back side of ball groove, from bottom to top through being socketed driving spring after the bolt through-hole of ball groove and the bolt through-hole of bulb, bolt head is connected to around the bolt through-hole at the ball groove back side, the difference of the diameter of bolt of lower base via hole and diameter of bolt diameter is 0.5 millimeter to 2.8 millimeters, nut is connected to the upper end of driving spring after being connected with bolt, the lower end of driving spring and the end of bulb connect, the driving spring generation elastic force that is squeezed, pole forms the conical outline line taking the centre of sphere of bulb as summit in the time that constraint is rotated taking described spherical pair, bolt rotates around the centre of sphere of bulb with pole, the drift angle scope of the conical motion of described pole is within the scope of 4.5 to 25 degree.
2. crutch according to claim 1, is characterized in that, the minimum distance of the centre of sphere of the centre distance ball groove of the bolt through-hole at the described ball groove back side is 13 to 13.7 millimeters.
3. crutch according to claim 2, is characterized in that, the described diameter of bolt of lower base via hole and the difference of the diameter of bolt are 1.7 to 2.6 millimeters, and the drift angle of the conical wheel profile of described pole motion is at 15 to 21.2 degree.
4. crutch according to claim 3, is characterized in that, the described diameter of bolt is 8 millimeters.
5. crutch according to claim 3, is characterized in that, described bolt gap is through the bolt through-hole of bulb, and the difference of the bolt through-hole diameter of the diameter of bolt and bulb is between 0.1 to 0.5 millimeter.
6. crutch according to claim 2, is characterized in that, the described ball groove back side is plane apart from the face at the some place of the minimum distance of the centre of sphere of ball groove.
7. crutch according to claim 1, is characterized in that, the upper end of described bulb arranges socket post, socket post is column, socket post is firmly socketed on the lower end of pole, and the bolt through-hole of bulb connects socket post, and the socket upper end of post and the lower end of driving spring connect.
8. crutch according to claim 1, is characterized in that, between described nut and back-moving spring, pad is set.
9. crutch according to claim 1, is characterized in that, the junction outer cover of described base and the spherical pair of pole is taken over control dust hood, and the two ends of dust cover are respectively by the upper surface sealing of pole lower end and base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433870.3U CN203969491U (en) | 2014-07-26 | 2014-07-26 | A kind of crutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433870.3U CN203969491U (en) | 2014-07-26 | 2014-07-26 | A kind of crutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203969491U true CN203969491U (en) | 2014-12-03 |
Family
ID=51966976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420433870.3U Expired - Fee Related CN203969491U (en) | 2014-07-26 | 2014-07-26 | A kind of crutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203969491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236892A (en) * | 2019-07-23 | 2019-09-17 | 深圳市信邦轮椅有限公司 | Crutch support leg and crutch |
-
2014
- 2014-07-26 CN CN201420433870.3U patent/CN203969491U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236892A (en) * | 2019-07-23 | 2019-09-17 | 深圳市信邦轮椅有限公司 | Crutch support leg and crutch |
| CN110236892B (en) * | 2019-07-23 | 2024-01-30 | 佛山市希维尔医疗科技有限公司 | Walking stick supporting leg and walking stick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20190726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |