CN201427494Y - Trundle folding device - Google Patents
Trundle folding device Download PDFInfo
- Publication number
- CN201427494Y CN201427494Y CN2009200616291U CN200920061629U CN201427494Y CN 201427494 Y CN201427494 Y CN 201427494Y CN 2009200616291 U CN2009200616291 U CN 2009200616291U CN 200920061629 U CN200920061629 U CN 200920061629U CN 201427494 Y CN201427494 Y CN 201427494Y
- Authority
- CN
- China
- Prior art keywords
- groove
- trundle
- frame axle
- wheel frame
- folding mechanism
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
- B60B33/06—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably
- B60B33/066—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably by use of a hinge and lever mechanism to swing wheel upwards relative to wheel mount
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B1/00—Spoked wheels; Spokes thereof
- B60B1/006—Spoked wheels; Spokes thereof specially adapted for light-weight wheels, e.g. of strollers or wheel-chairs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
- B60B33/0005—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by mounting method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
- B60B33/0015—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0036—Castors in general; Anti-clogging castors characterised by type of wheels
- B60B33/0039—Single wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
- B60B33/0049—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
- B60B33/0063—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism no swivelling action, i.e. no real caster
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The utility model discloses a trundle folding device, which comprises a trundle rack, a trundle rack shaft, installation racks, an positioning sleeve and a compression spring, wherein the upper end ofthe trundle rack is a trundle rack sleeve, the lower end of the trundle rack is connected with a trundle, the trundle rack shaft is sheathed in the trundle rack sleeve, the two ends of the trundle rack shaft are supported on the installation racks, the positioning sleeve is sheathed on the trundle rack shaft, bulge teeth and grooves which have the peripheries uniformly distributed are arranged onthe end parts of the opposite ends of the trundle rack sleeve and the positioning sleeve, the bulge teeth and the grooves are mutually meshed with each other, the compression spring is concentricallyarranged on the other end of the positioning sleeve, one end of the compression spring is positioned on the positioning sleeve, and the other end of the compression spring is positioned on the trundle rack shaft. Compared with the prior art, the utility model has the advantages that every trundle can be independently positioned and controlled, so that the trundle device sways because a front trundle can not be positioned can be avoided when the trundle device is applicable to a flat car, in addition, the trundle folding device has simple structure, accurate and reliable unfold positioning andsimple and convenient folding, and is convenient for consumers to use.
Description
Technical field
The utility model relates to a kind of occasion caster wheel folding mechanisms such as baggage car that are used for, and can open during particularly a kind of use, can fold the caster wheel folding mechanism when not using.
Technical background
On the airport, harbour, station or warehouse, when people need move heavier luggage or article, use flat truck mostly, more laborsaving, convenient.The Chinese patent 200710146724.7 of my application discloses a kind of castor received flat truck and castor registration device thereof that makes things convenient for folding to use, can carry heavy article.Its structure comprises bearing plate, push-and-pull part, castor, and two pole ends of push-and-pull part are articulated with carrier, and castor top caster wheel cover is sleeved on the carrier, is provided with castor between castor cover and the pole and opens, amounts to linkage.Its castor registration device comprise the left and right fastening device that locks the cover of caster wheel on the carrier two side arms and two poles respectively and with the slip cross bar of left and right fastening device interlock.This flat truck caster wheel can partly link with push-and-pull, and when bearing plate drew the push-and-pull part in, castor can be amounted to automatically, is convenient to keeping and transportation.But the unreasonable structure of this caster device is only located trailing wheel, thereby makes the push-and-pull part rock with respect to before and after the carrier meeting.In addition, its structure is also complicated, and cost is higher.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, and the location is reliable, but independent utility is at multiple occasion caster wheel folding mechanism.
The technical solution of the utility model is: a kind of castor folding mechanism, comprise foot wheel carrier, wheel frame axle and erecting frame, and the upper end of foot wheel carrier is the wheel carrier cover, the lower end is connected with castor; Wheel frame axle is sleeved in the wheel carrier cover, and two end supports is on erecting frame; It is characterized in that: described castor folding mechanism also comprises locating bush and compression spring, and locating bush is sleeved on the wheel frame axle, and the end of the relative end with locating bush of wheel carrier cover is respectively equipped with circumference well-distributed double wedge and groove, and described double wedge and groove are meshing with each other; The coaxial other end that is arranged on locating bush of compression spring, an end of compression spring is positioned on the locating bush, and the other end is positioned on the wheel frame axle.
As further improvement of the utility model, the lateral wall of described locating bush is provided with handle.This handle both can monolaterally be provided with, and also can be symmetrical arranged, and was used to spur locating bush and moved axially, thereby remove being meshing with each other between double wedge and the groove, and rotation folds foot wheel carrier.
Further improve as of the present utility model, the position at corresponding locating bush place is provided with the strip shape through hole on the described wheel frame axle, is inserted with guide finger in the described through hole, and the two ends of guide finger are fixed on the stop collar.Owing to have the directional tagging of guide finger, prevent that simultaneously locating bush from rotating around wheel frame axle.Therefore locating bush can accurately reset under the effect of compression spring, is convenient to accurately engagement between double wedge and the groove.
Described wheel frame axle is a hollow tube, and compression spring is coaxial to be arranged in the wheel frame axle, an end overhead of compression spring on guide finger, other end overhead with end cap that wheel frame axle is connected on.
Described double wedge or groove are even number on circumference.Described double wedge or groove are four or more.
Further improve as of the present utility model, described wheel carrier cover radially is provided with first groove, is set with torsion spring on the described wheel frame axle, and an end of torsion spring is positioned at wheel carrier and puts, and the other end stretches out outside the groove.When foot wheel carrier was opened, torsion spring was in free state; When the engagement removed between double wedge and the groove, promote foot wheel carrier around wheel frame axle rotate fold after, release handle, the wheel carrier of locating bush and foot wheel carrier overlaps fastening again, torsion spring is in and reverses strained condition at this moment.When needs are opened foot wheel carrier, the pulling handle, foot wheel carrier promptly is opened to initial position automatically under the effect of torsion spring.
Described wheel carrier puts and also is provided with second groove that is parallel to each other with first groove, is provided with locating dowel pin with the cooresponding position of second groove on the described wheel frame axle, and described second groove limits the angle that foot wheel carrier rotates around wheel frame axle.Described second groove comprises two, and is symmetrically distributed in the both sides of first groove, and the circumferential length of second groove is more than or equal to quadrant.
Be set with locating bush between described wheel frame axle and the wheel carrier cover, described locating bush is captiveed joint with wheel frame axle by locating dowel pin.Can reduce the friction between wheel frame axle and the wheel carrier cover like this, help folding and opening of foot wheel carrier.
In sum, the utility model compared with prior art, its beneficial effect is that each castor can position separately, independent control, thereby front-wheel can not be located and rocking of causing when avoiding being used on the flat truck.In addition, whole castor folding mechanism is simple in structure, and it is reliable to open accurate positioning, folds simple and conveniently, makes things convenient for the customer to use.
Description of drawings
Accompanying drawing 1 is the block diagram of castor folding mechanism;
Accompanying drawing 2 is the exploded drawings of Fig. 1;
Accompanying drawing 3 is the block diagram of Fig. 1 semi-sictional view;
Accompanying drawing 4 is the stereoscopic-state figure after castor folds among Fig. 1;
Accompanying drawing 5 is that the utility model castor folding mechanism is at the scheme drawing that is applied on the four-wheel flat truck.
The specific embodiment
Below in conjunction with drawings and the specific embodiments the utility model castor folding mechanism is described further.
Shown in accompanying drawing 1～3, the caster wheel folding mechanism comprises foot wheel carrier 1, wheel frame axle 2 and forward and backward erecting frame 3,4, locating bush 5 and compression spring 6 in the present embodiment.The upper end of foot wheel carrier 1 is a wheel carrier cover 11, and the lower end is connected with castor 16, and the two end supports of wheel frame axle 2 is on forward and backward erecting frame 3,4.During use, the bottom that forward and backward erecting frame 3,4 is fixed on the four-wheel flat truck gets final product (as shown in Figure 5).Locating bush 5 and wheel carrier cover 11 are sleeved on the wheel frame axle 2, wheel carrier cover 11 is respectively equipped with circumference well-distributed double wedge 11a and groove 5a with the end of locating bush 5 relative ends, double wedge 11a or groove 5a are chosen as even number on circumference, be preferably four or more, and double wedge 11a and groove 11a are meshing with each other.The position at corresponding locating bush 5 places is provided with strip shape through hole 2a on wheel frame axle 2, is inserted with guide finger 7 in this through hole 2a, and guide finger 7 can adopt the square nut, and its two ends are fixed on the stop collar 5 by screw 8.Therefore, stop collar 5 only can be under the directional tagging of guide finger 7,2a does axial moving back and forth along the strip shape through hole, and guide finger 7 prevents that also stop collar 5 from rotating around wheel frame axle 2 simultaneously, thereby comes wheel carrier cover 11 is played the positioning action of fastening by the groove 5a of stop collar 5 end faces.Therefore, the distance between the forward and backward erecting frame 3,4 is slightly larger than the axial length sum of wheel carrier cover 11 and locating bush 5, so that locating bush 5 moves vertically.
Wherein wheel frame axle 2 is a hollow tube, and the two ends of wheel frame axle 2 are respectively equipped with end cap 9, and the end cap 9 of the front end directly outside of the past erecting frame 3 is plugged in the wheel frame axle 2.The both sides of the end cap 9 of rear end are provided with lug 9a, and are fixed on the erecting frame 4 of back by screw 10 by the mounting hole 9b that is located on the lug 9a.Compression spring 6 coaxial being arranged in the wheel frame axle 2, an end overhead of compression spring 6 is on guide finger 7, and other end overhead is on the end cap 9 of rear end.In addition, be provided with handle 5b on the lateral wall of locating bush 5, handle 5b can be symmetricly set on the both sides of locating bush 5, also can only one-sided setting, and its shape is not limited to the shape shown in the accompanying drawing 2, moves axially with convenient pulling locating bush 5 to be as the criterion.Axially spur locating bush 5 by handle 5b, thereby remove being meshing with each other between double wedge 11a and the groove 5a, the promptly rotatable foot wheel carrier 1 that folds, as shown in Figure 4.
For convenience foot wheel carrier 1 opens to as shown in Figure 1 open mode from as shown in Figure 4 collapse state, on wheel carrier cover 11, radially be provided with the first groove 11b, be set with torsion spring 12 on the wheel frame axle 2, one end of torsion spring 12 is positioned on the wheel carrier cover 11, and the other end stretches out outside the groove 11b.In accompanying drawing 1, torsion spring 12 is in free state; When the engagement between releasing double wedge 11a and the groove 5a, promote foot wheel carrier 1 after wheel frame axle 2 rotations fold, locating bush 5 overlaps 11 fastenings again with the wheel carrier of foot wheel carrier 1, and as shown in Figure 4, torsion spring 12 is in and reverses strained condition at this moment.When needs are opened foot wheel carrier 1 to state as shown in Figure 1, pulling handle 5b, foot wheel carrier 1 is promptly opened under the effect of torsion spring 12 automatically.
In addition, on wheel carrier cover 11, also be provided with and two and the first groove 11b two parallel, the second groove 11c, article two, the second groove 11c is symmetricly set on the both sides of the first groove 11b, be respectively equipped with locating dowel pin 13 with the cooresponding position of two second groove 11c on the wheel frame axle 2, locating dowel pin 13 is installed on the wheel frame axle 2 by two mounting hole 2b on the wheel frame axle 2, and its end is plugged in the cooresponding second groove 11c; The second groove 11c is used to limit the angle of foot wheel carrier 1 around wheel frame axle 2 rotations.In order to guarantee to occupy minimum space after foot wheel carrier 1 folds, the circumferential length of the second groove 11c more preferably greater than or equal quadrant.
In order to reduce the friction between wheel frame axle 2 and the wheel carrier cover 11, between wheel frame axle 2 and wheel carrier cover 11, be set with locating bush 14 and pipe box 15, locating bush 14 is captiveed joint with wheel frame axle 2 by one of them locating dowel pin 13.Pipe box 15 then is sleeved on the front end of wheel frame axle 2, and as shown in Figure 3, the convex shoulder 15a of pipe box 15 ends is sandwiched between the front end face of preceding erecting frame 3 and wheel carrier cover 11.The effect of these two parts mainly is the friction that reduces between wheel frame axle 2 and the wheel carrier cover 11, prolongs the service life of wheel frame axle 2 and wheel carrier cover 11, and helps folding and opening of foot wheel carrier 1.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; therefore, all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the utility model claim.
Claims (10)
1. a castor folding mechanism comprises foot wheel carrier, wheel frame axle and erecting frame, and the upper end of foot wheel carrier is the wheel carrier cover, and the lower end is connected with castor; Wheel frame axle is sleeved in the wheel carrier cover, and two end supports is on erecting frame; It is characterized in that: described castor folding mechanism also comprises locating bush and compression spring, and locating bush is sleeved on the wheel frame axle, and the end of the relative end with locating bush of wheel carrier cover is respectively equipped with circumference well-distributed double wedge and groove, and described double wedge and groove are meshing with each other; The coaxial other end that is arranged on locating bush of compression spring, an end of compression spring is positioned on the locating bush, and the other end is positioned on the wheel frame axle.
2. castor folding mechanism according to claim 1 is characterized in that: the lateral wall of described locating bush is provided with handle.
3. castor folding mechanism according to claim 2 is characterized in that: the position at corresponding locating bush place is provided with the strip shape through hole on the described wheel frame axle, is inserted with guide finger in the described through hole, and the two ends of guide finger are fixed on the stop collar.
4. castor folding mechanism according to claim 3 is characterized in that: described wheel frame axle is a hollow tube, and compression spring is coaxial to be arranged in the wheel frame axle, an end overhead of compression spring on guide finger, other end overhead with end cap that wheel frame axle is connected on.
5. according to each described castor folding mechanism of claim 1 to 4, it is characterized in that: described double wedge or groove are even number on circumference.
6. castor folding mechanism according to claim 5 is characterized in that: described double wedge or groove are four or more.
7. according to each described castor folding mechanism of claim 1 to 4, it is characterized in that: described wheel carrier cover radially is provided with first groove, is set with torsion spring on the described wheel frame axle, and an end of torsion spring is positioned at wheel carrier and puts, and the other end stretches out outside the groove.
8. castor folding mechanism according to claim 7, it is characterized in that: described wheel carrier puts and also is provided with second groove that is parallel to each other with first groove, be provided with locating dowel pin with the cooresponding position of second groove on the described wheel frame axle, described second groove limits the angle that foot wheel carrier rotates around wheel frame axle.
9. castor folding mechanism according to claim 8 is characterized in that: described second groove comprises two, and is symmetrically distributed in the both sides of first groove, and the circumferential length of second groove is more than or equal to quadrant.
10. castor folding mechanism according to claim 8 is characterized in that: be set with locating bush between described wheel frame axle and the wheel carrier cover, described locating bush is captiveed joint with wheel frame axle by locating dowel pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200616291U CN201427494Y (en) | 2009-07-31 | 2009-07-31 | Trundle folding device |
| PCT/CN2009/000932 WO2011011904A1 (en) | 2009-07-31 | 2009-08-14 | Folding device for castor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200616291U CN201427494Y (en) | 2009-07-31 | 2009-07-31 | Trundle folding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201427494Y true CN201427494Y (en) | 2010-03-24 |
Family
ID=42031223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200616291U Expired - Fee Related CN201427494Y (en) | 2009-07-31 | 2009-07-31 | Trundle folding device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201427494Y (en) |
| WO (1) | WO2011011904A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859698A (en) * | 2015-04-22 | 2015-08-26 | 苏州市欣龙塑胶模具有限公司 | Wheel turnover and locking mechanism for foldable shopping cart |
| CN108548709A (en) * | 2018-04-28 | 2018-09-18 | 河南理工大学 | Detachable movable pressure break test piece mould and its making, assembling and application method |
| CN109606022A (en) * | 2018-11-23 | 2019-04-12 | 江西洪都航空工业集团有限责任公司 | A kind of self-locking folding castor of monolever operation |
| CN110040338A (en) * | 2019-04-16 | 2019-07-23 | 中国人民解放军第五七一零工厂 | A kind of the castor turnover mechanism and operating method of air transportation case |
| US20200223460A1 (en) * | 2018-10-16 | 2020-07-16 | Guang Dong Shun He Industrial Co., Ltd. | Dual-Purpose Folding Trolley |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001000263A (en) * | 1999-06-22 | 2001-01-09 | Koichi Yoshikawa | Moving device of furniture or the like |
| US6893030B2 (en) * | 2000-06-28 | 2005-05-17 | Richard N. Shapiro | Compact wagon or cart including stowable wheels and handle |
| US20030132613A1 (en) * | 2002-01-15 | 2003-07-17 | Liz Lin | Folding element for a front wheel of three-wheeled golf cart |
| CN2542149Y (en) * | 2002-05-17 | 2003-04-02 | 蔚冠工业股份有限公司 | Folding structure for caster of cradle |
| DE10240895A1 (en) * | 2002-09-04 | 2004-03-18 | Helmut Abel | Transport trolley with folding bikes and drawbar |
| CN2693588Y (en) * | 2004-04-13 | 2005-04-20 | 简世坤 | Luggage van |
-
2009
- 2009-07-31 CN CN2009200616291U patent/CN201427494Y/en not_active Expired - Fee Related
- 2009-08-14 WO PCT/CN2009/000932 patent/WO2011011904A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859698A (en) * | 2015-04-22 | 2015-08-26 | 苏州市欣龙塑胶模具有限公司 | Wheel turnover and locking mechanism for foldable shopping cart |
| CN104859698B (en) * | 2015-04-22 | 2017-04-12 | 苏州市欣龙塑胶模具有限公司 | Wheel turnover and locking mechanism for foldable shopping cart |
| CN108548709A (en) * | 2018-04-28 | 2018-09-18 | 河南理工大学 | Detachable movable pressure break test piece mould and its making, assembling and application method |
| US20200223460A1 (en) * | 2018-10-16 | 2020-07-16 | Guang Dong Shun He Industrial Co., Ltd. | Dual-Purpose Folding Trolley |
| CN109606022A (en) * | 2018-11-23 | 2019-04-12 | 江西洪都航空工业集团有限责任公司 | A kind of self-locking folding castor of monolever operation |
| CN110040338A (en) * | 2019-04-16 | 2019-07-23 | 中国人民解放军第五七一零工厂 | A kind of the castor turnover mechanism and operating method of air transportation case |
| CN110040338B (en) * | 2019-04-16 | 2023-12-01 | 凌云(宜昌)航空装备工程有限公司 | Caster wheel overturning mechanism of air transport case and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011011904A1 (en) | 2011-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20100731 |