CN101434178A - Brake structure of cart wheel - Google Patents
Brake structure of cart wheel Download PDFInfo
- Publication number
- CN101434178A CN101434178A CNA2007101879016A CN200710187901A CN101434178A CN 101434178 A CN101434178 A CN 101434178A CN A2007101879016 A CNA2007101879016 A CN A2007101879016A CN 200710187901 A CN200710187901 A CN 200710187901A CN 101434178 A CN101434178 A CN 101434178A
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- brake
- wheel
- center shaft
- component
- bearing
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Abstract
The invention discloses a brake structure for trolley wheels, which comprises a center shaft, a positioning component, a brake component and a bearing seat, wherein the center shaft and the positioning component are fixedly combined; an elastic piece gives upward elastic force to the center shaft; the lower end of the positioning component is provided with a positioning fluted disc; the upper end face of the brake component is provided with a fluted disc corresponding to the positioning fluted disc of the positioning components; two brake blocks are arranged below the brake component; the brake component is assembled on the bearing seat and two brake blocks protrude from the bearing seat; an elastic component is arranged between the brake component and the bearing seat; and the elastic components pushes the brake component away from the bearing seat. When a wheel rotates, two brake blocks of the brake component keep a distance away from the wheel, and the positioning component is separated from the brake component, and then the wheel can rotate in a free rotation direction. In a braking process, the center shaft is pushed downwards; the positioning fluted disc of the positioning component moves downwards and meshes with the fluted disc of the brake component; the bearing seat and the wheel are positioned and do no rotate; then the brake component is pushed downwards; two brake blocks tightly push against two side arc surfaces of the wheel; and the wheel stops rotating, thus the effects of positioning direction and braking are achieved.
Description
Technical field
The present invention relates to a kind of brake structure, particularly locate and brake structure about a kind of direction of cart wheel.
Background technology
Go-cart is used to transport commodity, kinds of goods or luggage, for the user provides laborsaving, transportation easily, therefore becomes a kind of short range means of delivery commonly used.Arbitrarily slide when go-cart is parked, general go-cart is provided with a brake gear.
The brake gear kind of prior art go-cart is a lot, for example: the brake gear of squeeze grip, foot-operated brake gear or the like.The brake gear of various prior art go-carts mainly is to utilize a brake shoes directly to contact at wheel surface, it is not rotated wheel, thereby reaches the purpose of brake.
Referring to figs. 1 to Fig. 3, it is a kind of brake gear of go-cart of prior art, it mainly is to make up a brake shoes 103 by the lower end of a center shaft 100 with a bolt 104, this center shaft is provided with a dowel disc 101 for 100 groups, this dowel disc 101 is provided with several double wedges 102, the side of center shaft 100 is provided with an elastomeric spacer 105, and this spacer 105 is convexly equipped with at least one nose bar 106, and center shaft 100 covers are organized a coil spring 108 and established a cap 109 in center shaft 100 top groups.Elastic force ejection cap 109 by coil spring 108, make center shaft 100 to top offset, brake shoes 103 keeps a distance with the tyre surface of wheel 107, the dowel disc 101 and the spacer 105 of center shaft 100 are released state, wheel 107 is able to freely rotate, and wheel 107 is able to center shaft 100 for the axle center rotates freely direction, as shown in Figure 2; When being pushed, center shaft 100 shifts to following time, consult Fig. 3, brake shoes 103 urges with the tyre surface of wheel 107 to bottom offset and contacts, wheel 107 is fixed, is not rotated, and several double wedges 102 of the dowel disc 101 of center shaft 100 and the 106 staggered engagements of the nose bar of spacer 105, center shaft 100 can't rotate, and wheel 107 can't be that the axle center hand of rotation forms the direction positioning states with center shaft 100 also, thereby reaches the brake and the direction location purpose of wheel 107.
Though aforementioned prior art brake gear and various prior art brake gear can both reach the effect of brake or direction location, the shortcoming of its existence is as follows:
(1) wheel 107 tyre surfaces of go-cart can make reduced in use for some time because of abrasion, cause the application force deficiency that compress contact of brake shoes 103 for wheel 107 tyre surfaces, thereby produce the problem of brake failure, then must change wheel when serious.
(2) between wheel 107 is advanced with the ground-surface circumferential line that is mainly wheel 107 that contacts, and brake shoes 103 is directly oppressed the tyre surface of contact wheel 107, brake repeatedly produces many recess with the circumferential line that makes wheel 107 for a long time, causes wheel 107 to produce the shortcoming beat between advancing.This kind wheel tyre surface caves in and produces the situation of advancing and beating, produce the problem of collision mutually in the time of can causing delivering article, particularly when go-cart is used to transport precision instrument or hospital's propelling movement critically ill patient, will produce the discomfort of damaging or patient being increased on foot pain to precision instrument.
(3) be horizontal because of double wedge 102 ends of center shaft 100 dowel discs 101 and spacing, size bigger, when the nose bar 106 with elasticity spacer 105 interlocks engagement, often be that double wedge 102 ends are connected to nose bar 106 sides, can't engage everywhere, just can utilize the elastic force of spacer 105 to force nose bar 106 to be sticked in the spacing of double wedge 102 and must rotate a low-angle, therefore having can't be in the problem of any angular orientation location.
Summary of the invention
The brake structure that the purpose of this invention is to provide a kind of cart wheel, solve the brake gear problem in the use of existing various go-carts, for example: the wheel tread wear and the circumferential line that produces brake failure, brake shoes compressing contact wheel makes it produce recess and cause wheel beat between advancing problem, positioning component can not engage everywhere and cause can't be in any angular orientation location etc. problem or shortcoming.
The invention provides a kind of brake structure of cart wheel, comprise rotation pedestal, a body of rod module and a brake module, the wheel carrier of this rotation pedestal articulates and is combined in wheel, rotation pedestal upper set is closed body of rod module, be provided with bearing between rotation pedestal and the body of rod module, the rotation pedestal rotates with respect to body of rod module;
This brake module embedding group is in aforementioned rotation pedestal and body of rod module; Brake module include a center shaft, certain hyte part, a brake assemblies, with a bearing; Wherein: this center shaft and positioning component fixed combination, group are established an elastic component ejection center shaft upwards; This positioning component upper end combines with aforementioned center shaft, and a location fluted disc is established in the positioning component lower end; The upper surface of this brake assemblies is provided with a fluted disc, and this fluted disc is corresponding to the location fluted disc of aforementioned positioning component, and the below of brake assemblies is provided with two brake shoes, and brake assemblies axially is assembled in the bearing, and two brake shoes protrude in the bearing below; Be provided with elastic parts between brake assemblies and the bearing, elastic parts pushes away bearing with brake assemblies; This bearing inner side edge is established two perforation, and this two perforation is passed through for two brake shoes activities of brake assemblies; Bearing fixedly is assembled in the aforementioned rotation pedestal.
Described center shaft top group is established a cap, and elastic component butt cap lower edge makes center shaft have elastic force upwards.
Two brake shoes of described brake assemblies have the cancave cambered surface corresponding to wheel tyre surface curved arc degree, and this cancave cambered surface is not a smooth side.
When wheel turns, two brake shoes of brake assemblies below and the tyre surface of wheel keep a distance in the use, and wheel gets free rotation, and positioning component separates with brake assemblies, and bearing and wheel get free rotation; During brake, the promotion center shaft is downward, the location fluted disc of positioning component fluted disc downward and brake assemblies meshes, bearing and wheel alignment are not rotated, it is downward to promote brake assemblies again, make the cancave cambered surface of two brake shoes push against wheel two side cambered surfaces, wheel stops operating, and reaches direction location and the effect of braking fully.
Main beneficial effect of the present invention is, utilize the both sides cambered surface of two brake shoes cancave cambered surface packing wheels of brake assemblies, wheel is stopped operating and reach the effect of brake, particularly brake repeatedly for a long time, two brake shoes of brake assemblies also can not cause the depression of wheel circumferential line, effectively solve the problem that wheel is advanced and beated, be applicable to that transporting precision instrument reduces infringement or hospital and push critically ill patient and alleviate patient's pain.
Another beneficial effect of the present invention is, at the tread wear of wheel and when causing diameter to reduce, two brake shoes cancave cambered surfaces of brake assemblies still can effectively compress the both sides cambered surface of wheel, can not produce the phenomenon of brake failure, also wheel need not be more renewed, consuming cost can be saved.
A beneficial effect more of the present invention is, during brake, the location fluted disc that utilizes positioning component downwards with the fluted disc engagement of brake assemblies, make the direction of wheel locate and do not rotate, the direction of wheel can be positioned unspecified angle, reach the practical effect of undirected location.
Description of drawings
Fig. 1 is a kind of three-dimensional exploded view of the primary clustering structure of brake gear and combination of components relation of prior art go-cart;
Fig. 2 is a kind of assembled sectional view of brake gear of prior art go-cart, shows that wheel can rotate freely the state of direction and rotation;
Fig. 3 is a kind of assembled sectional view of brake gear of prior art go-cart, shows that wheel is the state of direction location and brake;
Fig. 4 is the three-dimensional combination figure of the brake structure specific embodiment of cart wheel of the present invention;
Fig. 5 is the three-dimensional exploded view of the brake structure specific embodiment of cart wheel of the present invention;
Fig. 6 is the sectional perspective exploded drawings of the brake structure specific embodiment of cart wheel of the present invention;
Fig. 7 is the cross-sectional schematic of the brake structure specific embodiment of cart wheel of the present invention, shows that wheel can rotate freely the state of direction and rotation fully;
Fig. 8 is the cross-sectional schematic of the brake structure specific embodiment of cart wheel of the present invention, shows the directed state of keeping straight on of wheel;
Fig. 9 is the cross-sectional schematic of the brake structure specific embodiment of cart wheel of the present invention, shows that wheel is the state of direction location and brake.
Wherein, description of reference numerals is as follows:
1 rotation pedestal, 11 wheel carriers, 12 bearings
13 directed breach 2 body of rod modules 21 hollow axostyles
211 combined holes, 22 shaft housings, 221 combined holes
222 bolts, 223 perforation, 23 rings
3 brake modules, 31 center shafts, 311 elastic components
312 caps, 3121 arc grooves, 313 rolling axostylus axostyles
314 rolling discs, 3,141 first grooves, 3,142 second grooves
32 positioning components, 321 combination bore, 322 location fluted discs
323 orientation tab, 33 brake assemblies, 331 fluted discs
332 brake shoes, 333 bolts, 334 bolts
335 elastic partss, 34 bearings 341 are installed in groove
4 wheels, 100 center shafts, 101 dowel discs
102 double wedges, 103 brake shoes, 104 bolts
105 spacers, 106 nose bars, 107 wheels
108 coil springs, 109 caps
The specific embodiment
For describing purpose of the present invention, technical characterictic and effect in detail,, the present invention is described in detail as follows now by following preferred embodiment, and in conjunction with Figure of description.
To Fig. 6, be respectively three-dimensional combination figure, three-dimensional exploded view, the sectional perspective exploded drawings of the specific embodiment of the invention with reference to figure 4; The brake structure of a kind of cart wheel of the present invention comprises rotation pedestal 1, a body of rod module 2 and a brake module 3.
Wherein, the wheel carrier 11 of rotation pedestal 1 articulates combination wheel 4, consults Fig. 4, rotation pedestal 1 top combination body of rod module 2; Be provided with bearing 12 between rotation pedestal 1 and the body of rod module 2, consult Fig. 5, Fig. 7, Fig. 8 and Fig. 9, this bearing 12 makes rotation pedestal 1 with respect to 2 rotations of body of rod module; At least one directed breach 13 is established in rotation pedestal 1 inside, this orientation breach 13 below bearing 12, and directed breach 13 be positioned at rotation pedestal 1 just before or the position, dead aft, see also Fig. 7, Fig. 8 and shown in Figure 9.
Described body of rod module 2 comprises a hollow axostyle 21, two shaft housings 22; Combined hole 211 is established in these hollow axostyle 21 sides, and hollow axostyle 21 lower ends are incorporated in the bearing 12 of aforementioned rotation pedestal 1 top; Combined hole 221 is established in these two shaft housings, 22 sides, passes with bolt 222 and is locked on the combined hole 211 of hollow axostyle 21, and organize a ring 23 in the upper end cover of two shaft housings 22, and this ring 23 is combined closely this two shaft housing 22; Shaft housing 22 is provided with a perforation 223 in addition.
Described brake module 3 embedding groups are in aforementioned rotation pedestal 1 and body of rod module 2 inside.Brake module 3 includes a center shaft 31, certain hyte part 32, a brake assemblies 33 and a bearing 34.
Wherein, described center shaft 31 and positioning component 32 fixed combination, center shaft 31 passes hollow axostyle 21, an elastic component 311 of aforementioned rod phantom piece 2, and fixing group is established a cap 312 in center shaft 31 tops.These elastic component 311 upper and lower ends are butt cap 312 lower edges, hollow axostyle 21 end faces respectively, under the state that is not subjected to other external force, the state that center shaft 31 and positioning component 32 is kept up with the elastic-restoring force ejection cap 312 of elastic component 311 compression generations.
Described positioning component 32 upper ends combine with aforementioned center shaft 31 with a combination bore 321.Positioning component 32 lateral surfaces are multiaspect shape, and correspondence is worn the multiaspect shape of organizing in aforementioned hollow axostyle 21 the ring side, and positioning component 32, center link 31 are rotated synchronously with hollow axostyle 21, and can only be in hollow axostyle 21 longitudinal travel; A location fluted disc 322 is established in positioning component 32 lower ends.
The upper surface of described brake assemblies 33 is provided with the location fluted disc 322 of a fluted disc 331 corresponding to aforementioned positioning component 32, consult Fig. 6, the below of brake assemblies 33 is provided with two brake shoes 332, this two brake shoes 332 has the cancave cambered surface corresponding to wheel 4 tyre surface curved arc degree, for increasing the friction force of this cancave cambered surface, cancave cambered surface is not a smooth side, and for example: cancave cambered surface is established raised line, salient point, and cancave cambered surface is established chase, concave point or the like.In addition, this brake assemblies 33 axially is assembled in bearing 34 inside with bolt 333,334, and two brake shoes 332 protrude in bearing 34 belows; Be provided with elastic parts 335 between brake assemblies 33 and the bearing 34, under the situation that is not subjected to other external force, elastic parts 335 pushes away bearing 34 with brake assemblies 33.
Establish one in the described bearing 34 and be installed in groove 341, this is installed in groove 341 inner side edges and establishes two perforation (not shown).Be installed in the aforementioned brake assemblies 33 of groove 341 ccontaining combinations, this two perforation is passed through for two brake shoes, 332 activities of brake assemblies 33.Bearing 34 fixedly is assembled in rotation pedestal 1 inside.
In embodiments of the present invention, consult Fig. 5, on the cap 312 of brake module 3 center shafts 31 tops combination, an arc groove 3121 is set, wherein movable group is established a horizontal rolling axostylus axostyle 313, these rolling axostylus axostyle 313 upper ends are a rolling disc 314, rolling disc 314 rings are established first groove 3141, second groove 3142 week, the concane gap of first groove, 3141 to the second grooves 3142 is dark, the two ends activity that rolling disc 314 protrudes is embedded at perforation 223 inboards of the shaft housing 22 of aforementioned rod phantom piece 2, by applying an external force, can make rolling disc 314 223 is that rotate in the axle center to bore a hole.
Consult Fig. 7, it can rotate freely the cross-sectional schematic of direction and rotation for wheel 4, rolling axostylus axostyle 313 is arranged in second groove 3142 of rolling disc 314, the state that cap 312 and center shaft 31 are not compressed by external force, the elastic-restoring force ejection cap 312 of elastic component 311, and make center shaft 31 drive positioning component 32 upwards, the location fluted disc 322 of positioning component 32 separates fully with the fluted disc 331 of brake assemblies 33 upper surfaces, the brake assemblies 33 of brake module 3, bearing 34 is able to rotate freely with rotation pedestal 1 and wheel 4, and elastic parts 335 pushes away bearing 34 with brake assemblies 33 and to top offset, the curved end of two brake shoes 332 of brake assemblies 33 and the tyre surface of wheel 4 keep a distance, and wheel 4 is able to freely rotate.
Consult Fig. 8, it is the directed cross-sectional schematic of wheel 4 craspedodromes; Wherein, rotate this rolling disc 314 with the cw application of force, rolling axostylus axostyle 313 is sticked in first groove 3141 of rolling disc 314, because the concave arc of first groove, 3141 to the second grooves 3142 is darker, the elastic-restoring force ejection cap 312 of elastic component 311 upwards, making center shaft 31 drive positioning component 32 continues upwards, when rotation pedestal 1 rotates to the craspedodrome direction with wheel 4, the orientation tab 323 of positioning component 32 upwards is sticked in the directed breach 13 in the rotation pedestal 1, and elastic parts 335 will push away bearing 34 by brake assemblies 33, the curved end of two brake shoes 332 of brake assemblies 33 and wheel 4 tyre surfaces keep certain distance, wheel 4 gets free rotation at this moment, but is a directed state of keeping straight on.
Consult and examine Fig. 9, it is the cross-sectional schematic of wheel 4 directions location and brake; Wherein, rotate this rolling disc 314 with the anticlockwise direction application of force, make rolling axostylus axostyle 313 be positioned at the outer ring surface of rolling disc 314, cap 312 is downward with center shaft 31, the location fluted disc 322 of orientation assemblies 32 can be in fluted disc 331 engagements arbitrarily angled and brake assemblies 33 upper surfaces, need not turn the direction of rotation pedestal 1 and wheel 4, the brake assemblies 33 of brake module 3, bearing 34, and rotation pedestal 1 and wheel 4 are directed location fluted disc 322 location of assembly 32 and can not rotate, simultaneously, positioning component 32 is passed brake assemblies 33 downward elasticity of compression assemblies 335, make brake assemblies 33 two brake shoes 332 curved end contact and push against tyre surface both sides in wheel 4, wheel 4 can not rotate, and reaches perfect square to location and the effect of braking.
In the time will making wheel 4 rotate freely direction once again and rotate, as long as the clockwise direction application of force is rotated this rolling disc 314, make rolling axostylus axostyle 313 be positioned at second groove, 3142 positions of rolling disc 314, consult Fig. 7, promptly remove the direction location and brake of wheel 4, can rotate freely direction and rotation then.
The present invention utilizes two brake shoes cancave cambered surfaces of brake assemblies to be tight against the both sides cambered surface of wheel, wheel is stopped operating, can not cause the depression of wheel circumferential line, effectively solve the problem of beating when wheel is advanced, the phenomenon that does not also have brake failure, utilize the engagement of fluted disc and fluted disc to locate simultaneously, can reach the effect of undirected location.
Consult the above specific embodiment, the present invention is done a detailed description, but the above person of institute only is preferred embodiment of the present invention, can not limit scope of the invention process.Be all various equal variations of within scope of patent protection of the present invention, being done and modification etc., all should be included within the patent protection of the present invention.
Claims (8)
1. the brake structure of a cart wheel, comprise rotation pedestal, a body of rod module and a brake module, the wheel carrier of this rotation pedestal articulates and is combined in wheel, rotation pedestal upper set is closed body of rod module, be provided with bearing between rotation pedestal and the body of rod module, the rotation pedestal rotates with respect to body of rod module; It is characterized in that:
This brake module embedding group is in aforementioned rotation pedestal and body of rod module; Brake module include a center shaft, certain hyte part, a brake assemblies, with a bearing; Wherein:
This center shaft and positioning component fixed combination, group are established an elastic component ejection center shaft upwards;
This positioning component upper end combines with aforementioned center shaft, and a location fluted disc is established in the positioning component lower end;
The upper surface of this brake assemblies is provided with a fluted disc, and this fluted disc is corresponding to the location fluted disc of aforementioned positioning component, and the below of brake assemblies is provided with two brake shoes, and brake assemblies axially is assembled in the bearing, and two brake shoes protrude in the bearing below; Be provided with elastic parts between brake assemblies and the bearing, elastic parts pushes away bearing with brake assemblies;
This bearing inner side edge is established two perforation, and this two perforation is passed through for two brake shoes activities of brake assemblies; Bearing fixedly is assembled in the aforementioned rotation pedestal.
2. according to the brake structure of the described cart wheel of claim 1, it is characterized in that described center shaft top group is established a cap, elastic component butt cap lower edge makes center shaft have elastic force upwards.
3. according to the brake structure of the described cart wheel of claim 1, it is characterized in that two brake shoes of described brake assemblies have the cancave cambered surface corresponding to wheel tyre surface curved arc degree.
4. according to the brake structure of the described cart wheel of claim 3, it is characterized in that the cancave cambered surface of described two brake shoes is not a smooth side.
5. according to the brake structure of the described cart wheel of claim 3, it is characterized in that the cancave cambered surface of described two brake shoes is established raised line.
6. according to the brake structure of the described cart wheel of claim 3, it is characterized in that the cancave cambered surface of described two brake shoes is established salient point.
7. according to the brake structure of the described cart wheel of claim 3, it is characterized in that the cancave cambered surface of described two brake shoes is established chase.
8. according to the brake structure of the described cart wheel of claim 3, it is characterized in that the cancave cambered surface of described two brake shoes is established concave point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101879016A CN101434178A (en) | 2007-11-15 | 2007-11-15 | Brake structure of cart wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101879016A CN101434178A (en) | 2007-11-15 | 2007-11-15 | Brake structure of cart wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101434178A true CN101434178A (en) | 2009-05-20 |
Family
ID=40708877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101879016A Pending CN101434178A (en) | 2007-11-15 | 2007-11-15 | Brake structure of cart wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101434178A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437866A (en) * | 2015-12-31 | 2016-03-30 | 福建施可瑞医疗科技股份有限公司 | Caster brake structure |
| WO2019033819A1 (en) * | 2017-08-16 | 2019-02-21 | 东莞市三九体育用品有限公司 | Caster wheel and golf bag base using same |
| CN110239280A (en) * | 2018-03-09 | 2019-09-17 | 卓安寗 | Castor |
| CN110239279A (en) * | 2018-03-07 | 2019-09-17 | 卓安寗 | Castor |
-
2007
- 2007-11-15 CN CNA2007101879016A patent/CN101434178A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437866A (en) * | 2015-12-31 | 2016-03-30 | 福建施可瑞医疗科技股份有限公司 | Caster brake structure |
| WO2019033819A1 (en) * | 2017-08-16 | 2019-02-21 | 东莞市三九体育用品有限公司 | Caster wheel and golf bag base using same |
| CN110239279A (en) * | 2018-03-07 | 2019-09-17 | 卓安寗 | Castor |
| CN110239280A (en) * | 2018-03-09 | 2019-09-17 | 卓安寗 | Castor |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Open date: 20090520 |