CN101695893A - Caster wheel capable of braking - Google Patents
Caster wheel capable of braking Download PDFInfo
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- CN101695893A CN101695893A CN200910193144A CN200910193144A CN101695893A CN 101695893 A CN101695893 A CN 101695893A CN 200910193144 A CN200910193144 A CN 200910193144A CN 200910193144 A CN200910193144 A CN 200910193144A CN 101695893 A CN101695893 A CN 101695893A
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- wheel
- caster wheel
- wheel body
- dust
- body assembly
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Abstract
The invention relates to a caster wheel capable of braking. A braking mechanism of the caster wheel is positioned inside a wheel body component and comprises a controller provided with a signal receiving unit, a locking device controllably connected to the controller, and a rotary damper. The rotary damper is provided with a first part with a limiting structure and a second part fixed on the wheel body component, wherein the first part is separated from or matched with the locking device through the limiting structure to form a rotatable free state or an irrotatable locking state, and the first part is in opposite rotating fit with the second part through a damping element. The design of the rotary damper is used in the caster wheel; after exceeding the specified area, a trolley also can be slowly pushed under the action of the rotary damper instead of being suddenly and completely locked, thereby the risk on users can be avoided and the damage on the wheel body by forcing to push the trolley after the caster wheel is locked can be prevented.
Description
Technical field
The present invention relates to a kind of castor, especially a kind of stop mechanism caster wheel that has.
Background technology
Supermarket shopping more and more becomes modern's requisite consumer behavior of living in current society, and supermarket shopping car plays an important role in supermarket shopping as supermarket shopping means of delivery easily.Utilizing after supermarket shopping car loaded commodity, the mode that reclaims by the supermarket staff is mostly adopted in the recovery of present domestic supermarket shopping car, the waste of manpower resource, and simultaneously, cost of labor is more and more higher, is unfavorable for the cost control in supermarket.The stolen situation of supermarket shopping car also happens occasionally.Because each shopping cart all is quite expensive, so the loss of shopping cart causes very big economic loss to businessman.
Based on the stolen situation of supermarket shopping car, save human cost simultaneously, antitheft shopping cart arises at the historic moment, and its groundwork is: be automatically locked when the antitheft zone that is provided with by the supermarket by a wheel on the shopping cart, whole shopping cart can't be promoted, reach antitheft purpose.Because this kind mode is locked fully suddenly when shopping cart passes through antitheft zone, may cause the damage of shopping cart wheel, the while may cause the personnel that use shopping cart because the unexpected brake of shopping cart causes danger.
China's utility model patent 200820201506.9 discloses a kind of caster wheel of braking by the applicant's application, the stop mechanism of this castor is positioned at the outside of wheel body assembly, it comprises the controller with signal receiving unit, controllably be connected in the blocking device and the rotary type damper of this controller, this damper comprises shell with position limiting structure and the damping wheel that is positioned at this shell, described shell separates with described blocking device or cooperates by its position limiting structure and forms rotatable free state or non-rotatable lockup state, and described damping wheel is in transmission connection in described wheel body assembly.This castor has adopted the design of band damper, behind the zone of overshoot, hand barrow is because the effect of damper can also be carried out several meters lentamente, rather than it is suddenly locked fully, thereby can not cause danger, prevent that castor from being promoted hand barrow after locked by force and damage that wheel body is caused yet the user.Because the stop mechanism of above-mentioned castor is positioned at the outside of wheel body assembly, and has adopted gear drive, comparatively complexity, volume are big, manufacturing cost is higher to cause structure, therefore still have further improved space.
Summary of the invention
But main purpose of the present invention provides and a kind ofly not only can prevent but also can play the brake castor of anti-theft feature that it was simple and compact for structure, volume is little, low cost of manufacture locked suddenly.
For achieving the above object, the present invention has adopted following technical scheme: design a kind of caster wheel of braking, comprise that wheel carrier, rotatably support are in the wheel body assembly of this wheel carrier and the stop mechanism that cooperates with this wheel body assembly, described stop mechanism is positioned at the inside of this wheel body assembly, and this stop mechanism comprises controller with signal receiving unit, controllably is connected in the blocking device and the rotary type damper of this controller; Described rotary type damper has the first of band position limiting structure and is connected and fixed on the second portion of described wheel body assembly, this first separates with described blocking device or cooperates by its position limiting structure and forms rotatable free state or non-rotatable lockup state, forms relatively turnable the cooperation by damping element between described first and the second portion.
Described first is a base, and described second portion is a lid, and described damping element is a torsion spring, and an end of this torsion spring is fixed in described lid, and the other end is pressed on the limiting component that is fixed in described base.
Described wheel body assembly comprises tire body, bearing, wheel hub, big cover of dust and little cover of dust, described wheel hub is tight with at the inner circumferential side of tire body, described bearing and wheel hub are connected and fixed coaxially, and described big cover of dust and little cover of dust are fixed in the both sides of described wheel hub.
Described lid is fastened on the described big cover of dust by screw.
Described rotary type damper is arranged at the midway location of described wheel body component internal.
Described wheel carrier comprises pipe link, the rotating element that connects support and be made of ball and ball dish, and described pipe link forms relatively turnable connection by this rotating element with the described support that is connected.
Described blocking device is arranged on one and is positioned on the reaction plate of described wheel body component internal, and this reaction plate connects by a circumferential locating part and circumferentially is fixed in described wheel carrier, and described blocking device comprises drive part, running part and operating part.Described drive part is a motor; Described running part is a train of reduction gears; Described operating part comprises locking bar and the rotating head that acts on this locking bar, and described rotating head is connected in described train of reduction gears, and described locking bar is arranged on the locking bar axle of described reaction plate rotationally by the elastic recovery parts.Described rotating head is the cam rotating head, and described elastic recovery parts are torsion spring.
Compared with prior art, the present invention has the following advantages and useful result:
1) this castor is difficult to promote by back, antitheft zone, thereby reaches theft-proof purpose.
2) solved common antitheft hand barrow and when antitheft, the user has been caused dangerous problem because of its castor is suddenly locked.
3) having solved common antitheft hand barrow continues promotion and wheel body is caused wear problems when its castor is locked.
4) stop mechanism of this castor is arranged at the wheel body component internal, has simplified mechanism, has reduced volume, has reduced manufacturing cost, and profile is also more attractive in appearance.
5) this castor can be widely used in hand barrows such as shopping cart, baggage car, perambulator, tote cart, stretcher.
Description of drawings
Fig. 1 is the block diagram of a kind of embodiment of castor of the present invention;
Fig. 2 is the parts explosion of castor shown in Figure 1;
Fig. 3 is the parts explosion of the wheel body assembly among Fig. 2;
Fig. 4 is the front elevation of the rotary type damper among Fig. 2;
Fig. 5 is the A-A cutaway view of Fig. 4;
Fig. 6 is the parts explosion of rotary type damper shown in Figure 4;
Fig. 7 is the parts explosion at another visual angle of rotary type damper shown in Figure 4;
Fig. 8 is the inner structure scheme drawing after rotary type damper shown in Figure 4 is removed lid;
Fig. 9 is the front elevation of castor shown in Figure 1;
Figure 10 is the B-B cutaway view of Fig. 9;
Figure 11 is the C-C cutaway view of Fig. 9;
Figure 12 is the released state scheme drawing of castor shown in Figure 1;
Figure 13 is the lock-out state scheme drawing of castor shown in Figure 1;
The specific embodiment
Describe the present invention in detail below in conjunction with accompanying drawing.In institute's drawings attached, identical mark will be used to refer to identical parts, feature or structure.Embodiment introduce in the process at concrete structure or parts only understand of the present invention with reference to the property illustration as those skilled in the art; those skilled in the art can also design do not exceed the technology of the present invention scope and essence various and be equal to or the similar techniques structure under the enlightenment of this technical scheme; if it is unfavorable limiting the protection domain that claim of the present invention includes with this exemplary illustration thus, is equal to or is similar to the protection domain that technical scheme of the present invention still belongs to claim of the present invention.And for simple and clear needs, the applicant has omitted the description of known function and structure.
Referring to Fig. 1 to Fig. 3, this castor comprises that mainly wheel carrier 21, rotatably support are in the wheel body assembly 22 of this wheel carrier and the stop mechanism that is arranged on this wheel body component internal and is mated, this stop mechanism is installed in the die cavity of wheel hub 14 of wheel body assembly 22, it has comprised controller 11, controllably has been connected in the blocking device and the rotary type damper 12 of this controller 11, and rotary type damper 12 is arranged at described wheel body assembly 22 in-to-in middles or position intermediate roughly.Wheel body assembly 22 inside are provided with a reaction plate 13, and this reaction plate 13 is used for circumferential spacing square-section contiguous block 25 by one and is connected in wheel carrier 21, thereby forms circumferentially fixing with wheel carrier 21.This square-section contiguous block 25 passes square hole 215 on the wheel carrier 21 and the square hole on the reaction plate 13 respectively, and this square-section contiguous block 25 also has the circular hole that can pass for wheel shaft 9.When wheel body assembly 22 when wheel shaft 9 rotates with respect to wheel carrier 21, this reaction plate 13 can't rotate along with wheel body assembly 22.Described controller 11 is for being fastened on the circuit card on the described reaction plate 13, and it includes signal receiving unit and control signal output unit etc.Power subsystem unit 26 is fixed on the controller 11, is used for to its power supply.Described wheel carrier 21 comprises pipe link 211, the rotating element 213 that connects support 212 and be made of ball and ball dish, described pipe link 211 forms relatively turnable connection by this rotating element 213 with the described support 212 that is connected, and connects support 212 and is provided with the circular hole 214 and the square hole 215 that can supply following wheel shaft 9 to pass.
Referring to Fig. 2 and Fig. 3, described wheel body assembly 22 is installed on the wheel carrier 21 by wheel shaft 9 and nut 17, this wheel body assembly 22 comprises tire body 15, bearing 23, wheel hub 14, big cover of dust 10, little cover of dust 16, wheel hub 14 is tight with at the inner circumferential side of tire body 15, bearing 23 is connected and fixed coaxially with wheel hub 14, big cover of dust 10 and little cover of dust 16 are fixed in the both sides of wheel hub 14 by screw, lock together with the following lid 32 of spiral shell 24 with big cover of dust 10 and rotary type damper 12.At this moment, when tire body 15 rotated, rotary type damper 12 also can be followed together and rotate.
Referring to Fig. 2, described blocking device is arranged on the described reaction plate 13, this blocking device comprised motor 20 as drive part, as the train of reduction gears of running part and as the locking bar 18 of operating part with act on the cam rotating head 19 of this locking bar, this cam rotating head 19 is connected in described train of reduction gears, and described locking bar 18 is by being arranged at rotationally on the locking bar axle 131 of reaction plate 13 such as elastic recovery parts such as torsion springs.
Referring to Fig. 4 to Fig. 8, rotary type damper 12 mainly comprises base 34, lid 32, torsion spring 33, limited post 35, screw 36, axle sleeve 37, fixed cover 31, base 34 and lid 32 constitute the shell of rotary type damper 12, and torsion spring 33 is arranged between base 34 and the lid 32.Axle sleeve 37 is set on the wheel shaft 9, can support described shell and rotate around wheel shaft 9.On the circumference side of this base 34 evenly the compartment of terrain be distributed with several position-limited troughs 47, separate with locking bar 18 on the blocking device or cooperate these base 34 rotatable free state of formation or non-rotatable lockup states by position-limited trough 47.The principle of work of this rotary type damper 12 is: an end 331 of torsion spring 33 is fixed in lid 32 by fixed cover 31, and the other end 332 is pressed on by screw 36 and is fixed on the base 34 in-to-in limited posts 35.When base 34 and lid 32 relatively rotated, the torsion that torsion spring 33 produces hindered relatively rotating of base 34 and lid 32.If produce relative rotation between them, enough big external force must be arranged.Rotary type damper 12 is except adopting torsion spring as the damping element, can also adopt such as the damping wet goods as damping element, adopt the structure of the rotary type damper of damping oil form just to be not described in detail herein with reference to No. 200820202130.3 disclosed a kind of rotary type dampers of Chinese invention patent.
When above-mentioned castor is installed on shopping cart when using, the user promotes shopping cart, tire body 15 rotates with ground friction, and driving wheel hub 14 rotations, big cover of dust 10 adopts screws to be connected with wheel hub 14, in Figure 10, lid 32 adopts screw to be connected with big cover of dust 10, drive lid 32 and rotate when wheel body assembly 22 rotates, this moment is by being transferred to base 34 with lid 32 bonded assembly torsion springs 33, thereby makes its synchronous rotation.
Referring to Figure 11, this is the situation under a kind of released state, and promptly shopping cart is in caster wheel state in the range of use that the market allows, this moment rotary type damper 12 without any stop that the user can promote shopping cart free, neatly.
When the user shifts shopping cart the range of use boundary line of market permission onto, the security system in market can send to locking signal the signal receiving unit of controller by modes such as radio frequencies, when receiving above-mentioned signal, controller 11 is connected to the motor 20 of blocking device and controls its motion by its control signal output unit, motor 20 drives cam rotating head 19 by train of reduction gears and clockwise rotates 90 degree, and this moment, motor 20 stopped operating.Locking bar 18 is positioned on the locking bar axle 131 on the reaction plate 13, and it can only rotate around locking bar axle 131.Locking bar 18 is provided with torsion spring, and under the effect of this torsion spring, locking bar 18 is with the right-hand revolution among Figure 12, withstand up to being rotated 19, at this moment, the position of locking bar 18 as shown in figure 13, the situation under Here it is a kind of lock-out state.In this case, when the user promotes shopping cart, when being transferred to rotary type damper 12 by transmission device, rotary type damper 12 is by the anticlockwise motion among Figure 11, and at this moment, locking bar 18 just blocks the position-limited trough 47 on the shell of rotary type damper 12, this shell can't be rotated, receive the resistance that comes from base 34 during torsion spring 33 rotations, this resistance reacts on wheel body assembly 22 by lid 32, to such an extent as to the user will could be promoted with very big power when promoting shopping cart.
Shopping cart under the staff in market and user firmly will be in the lock state is pushed into when the market is set separates near the locking wire, the security system in market sends to unlocking signal by modes such as radio frequencies the signal receiving unit of controller 11, when receiving above-mentioned signal, 20 motions of controller 11 control blocking device in-to-in motors, when the train of reduction gears of motor 20 by blocking device drives cam rotating head 19 and rotates counterclockwise the vertex position that makes locking bar 18 be positioned at rotating head 19 camming surfaces, motor 20 stops operating, at this moment be in released state shown in Figure 11, the user can be free, promoting shopping cart neatly walks about in the range of use that the market allows.
In sum, the said structure caster wheel can guarantee that hand barrow can only use in the scope of its permission, if the use zone of hand barrow overshoot, the stop mechanism work of castor, hand barrow is produced a big resistance, make the user be difficult to continue to promote hand barrow, thereby realize theft-proof function.This castor has adopted the design of band rotary type damper, behind the zone of overshoot, hand barrow can also be carried out slowly because of the effect of rotary type damper, rather than it is suddenly locked fully, thereby can not cause danger, prevent that castor from being promoted hand barrow after locked by force and damage that wheel body is caused yet the user.
Claims (9)
1. can brake caster wheel, comprise that wheel carrier, rotatably support are in the wheel body assembly of this wheel carrier and the stop mechanism that cooperates with this wheel body assembly, it is characterized in that: described stop mechanism is positioned at the inside of this wheel body assembly, and this stop mechanism comprises controller with signal receiving unit, controllably is connected in the blocking device and the rotary type damper of this controller; Described rotary type damper has the first of band position limiting structure and is connected and fixed on the second portion of described wheel body assembly, this first separates with described blocking device or cooperates by its position limiting structure and forms rotatable free state or non-rotatable lockup state, forms relatively turnable the cooperation by damping element between described first and the second portion.
2. the caster wheel of braking according to claim 1, it is characterized in that: described first is a base, and described second portion is a lid, and described damping element is a torsion spring, one end of this torsion spring is fixed in described lid, and the other end is pressed on the limiting component that is fixed in described base.
3. the caster wheel of braking according to claim 2, it is characterized in that: described wheel body assembly comprises tire body, bearing, wheel hub, big cover of dust and little cover of dust, described wheel hub is tight with at the inner circumferential side of tire body, described bearing and wheel hub are connected and fixed coaxially, and described big cover of dust and little cover of dust are fixed in the both sides of described wheel hub.
4. the caster wheel of braking according to claim 3 is characterized in that: described lid is fastened on the described big cover of dust by screw.
5. the caster wheel of braking according to claim 4, it is characterized in that: described rotary type damper is arranged at the midway location of described wheel body component internal.
6. the caster wheel of braking according to claim 5, it is characterized in that: described wheel carrier comprises pipe link, the rotating element that connects support and be made of ball and ball dish, and described pipe link forms relatively turnable connection by this rotating element with the described support that is connected.
7. according to each described caster wheel of braking of claim 1 to 6, it is characterized in that: described blocking device is arranged on one and is positioned on the reaction plate of described wheel body component internal, this reaction plate connects by a circumferential locating part and circumferentially is fixed in described wheel carrier, and described blocking device comprises drive part, running part and operating part.
8. the caster wheel of braking according to claim 7 is characterized in that: described drive part is a motor; Described running part is a train of reduction gears; Described operating part comprises locking bar and the rotating head that acts on this locking bar, and described rotating head is connected in described train of reduction gears, and described locking bar is arranged on the locking bar axle of described reaction plate rotationally by the elastic recovery parts.
9. the caster wheel of braking according to claim 8 is characterized in that: described rotating head is the cam rotating head, and described elastic recovery parts are torsion spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101931442A CN101695893B (en) | 2009-10-19 | 2009-10-19 | Caster wheel capable of braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101931442A CN101695893B (en) | 2009-10-19 | 2009-10-19 | Caster wheel capable of braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101695893A true CN101695893A (en) | 2010-04-21 |
| CN101695893B CN101695893B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101931442A Expired - Fee Related CN101695893B (en) | 2009-10-19 | 2009-10-19 | Caster wheel capable of braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101695893B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496296A (en) * | 2013-10-11 | 2014-01-08 | 宁波禾采医疗器械有限公司 | Medical trundle of sickbed cart |
| CN107116971A (en) * | 2017-05-23 | 2017-09-01 | 台山市金昊贸易有限公司 | A kind of Novel rolling wheel for market shopping car |
| CN107128127A (en) * | 2017-05-23 | 2017-09-05 | 台山市金昊贸易有限公司 | A kind of combination roller for market shopping car |
| CN107244189A (en) * | 2017-05-23 | 2017-10-13 | 台山市金昊贸易有限公司 | A kind of roller for being easy to assembling for market shopping car |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201520161U (en) * | 2009-10-19 | 2010-07-07 | 珠海百亚电子科技有限公司 | Caster capable of braking |
-
2009
- 2009-10-19 CN CN2009101931442A patent/CN101695893B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496296A (en) * | 2013-10-11 | 2014-01-08 | 宁波禾采医疗器械有限公司 | Medical trundle of sickbed cart |
| CN107116971A (en) * | 2017-05-23 | 2017-09-01 | 台山市金昊贸易有限公司 | A kind of Novel rolling wheel for market shopping car |
| CN107128127A (en) * | 2017-05-23 | 2017-09-05 | 台山市金昊贸易有限公司 | A kind of combination roller for market shopping car |
| CN107244189A (en) * | 2017-05-23 | 2017-10-13 | 台山市金昊贸易有限公司 | A kind of roller for being easy to assembling for market shopping car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101695893B (en) | 2012-04-25 |
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Granted publication date: 20120425 Termination date: 20211019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |