CN202193150U - Frame retractable mechanism and bicycle for children with same - Google Patents
Frame retractable mechanism and bicycle for children with same Download PDFInfo
- Publication number
- CN202193150U CN202193150U CN2011202319456U CN201120231945U CN202193150U CN 202193150 U CN202193150 U CN 202193150U CN 2011202319456 U CN2011202319456 U CN 2011202319456U CN 201120231945 U CN201120231945 U CN 201120231945U CN 202193150 U CN202193150 U CN 202193150U
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- CN
- China
- Prior art keywords
- vehicle frame
- flexible
- positioning boss
- cover
- interior
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a frame retractable mechanism, which comprises an inner frame, an outer frame, an inner retractable sleeve and an outer retractable sleeve. One end of the inner retractable sleeve is provided with an external thread, positioning bosses are arranged on one side or two sides of the inner retractable sleeve, and the tail end of each positioning boss is provided with a pin hole and used for mounting positioning pins extending into the inner retractable sleeve. One end of the inner wall of the outer retractable sleeve is provided with an internal thread matched with the external thread, the outer frame is connected outside the inner retractable sleeve in a sleeved manner, and the outer diameter of the inner frame is matched with the inner diameter of the inner retractable sleeve. Positioning holes in one or two columns are used for containing the positioning pins are axially arranged on the inner frame corresponding to the positioning pins. The inner frame, the inner retractable sleeve, the outer frame and the outer retractable sleeve are sequentially connected in a sleeved manner from inside to outside, the positioning holes are fastened with the positioning pins, and opening and closing of the pins and the positing holes can be controlled by turning the outer retractable sleeve so as to adjust stretching and retracting of the frames. The utility model further provides a bicycle for children with the frame retractable mechanism, which is characterized in that requirements of children of different heights can be met by adjusting the length of the frames to change the distance from each handlebar to a saddle.
Description
One, technical field
The utility model relates to children's two-wheeled and tricycle field, relates in particular to the telescoping mechanism of its vehicle frame, so that the vehicle frame length of child's bicycle can be adjusted.
Two, background technology
Existing children's two-wheeled tricycle vehicle frame is an integral structure, and perhaps front vehicle frame adopts modes such as welding, bolted connection to captive joint together with the back vehicle frame.This structure can make the stationkeeping of handlebar and saddle, and promptly both distances are unadjustable.This structure can not be suitable for different height children's needs, can not adapt to the requirement that its height changes to same children.When purchasing child's bicycle, consider certain advanced have to buy compare larger-size car with children's height; And along with the quick growth of children's height, it is less relatively that the size of car then becomes very soon.Like this, the time of comfortable this car of use of one side children is shorter, also causes the waste of family expense on the other hand.
Three, summary of the invention
In order to overcome the above-mentioned defective of prior art, the utility model provides a kind of telescopic Children's Bicycle Frame, and the child's bicycle that uses this vehicle frame, enables to adapt to different height children's needs.
The technical scheme of the utility model is: a kind of Children's Bicycle Frame, vehicle frame is divided into two sections of the front and back of socket mutually, be interior vehicle frame in being enclosed within, cover outside be outer vehicle frame.Vehicle frame or outer vehicle frame in front vehicle frame (near handlebar one end) can be, back vehicle frame (near saddle one end) then is outer vehicle frame or interior vehicle frame accordingly.Realize inside and outside reliable socket of vehicle frame and telescopic adjustment, the mechanism that has flexible interior cover and flexible overcoat to constitute.
Cover is tubular part in stretching, and an end has outside thread, and there is positioning boss one or both sides, and the nearly outside thread side of positioning boss is connected other three disconnections with flexible interior jacket wall.Be that positioning boss is cantilever-shaped, inside elastic deformation under external force.The positioning boss end is established pin-and-hole, and interior installing and locating pin, the pin head of locating dowel pin inwardly stretch in the flexible interior cover.The terminal inclined-plane in addition of positioning boss is oppressed this inclined-plane and can be made the positioning boss elastic deformation, to drive locating dowel pin cover intrinsic displacement in flexible.
Flexible overcoat also is a tubular structure, and its inwall one end has the negative thread that cooperates with flexible interior cover outside thread, and the other end has the annular slope that cooperates with the positioning boss inclined-plane.
Outer vehicle frame also is a tubular structure, and its internal diameter cooperates with flexible interior cover external diameter, can be socketed in outside the flexible interior cover, with the cooresponding position of positioning boss, on the outer vehicle frame location notch hole is arranged.The engaging of positioning boss and location notch hole realize flexible in being connected of cover and outer vehicle frame.
The external diameter of interior vehicle frame matches with the internal diameter of flexible interior cover.Corresponding with locating dowel pin, on interior vehicle frame, there are row or two row to hold the knock hole of locating dowel pin head vertically.
From inside to outside, interior vehicle frame, flexible interior cover, outer vehicle frame, flexible overcoat socket successively.Knock hole engages with the locating dowel pin head.When stretching overcoat when screwing, its annular slope compressing positioning boss inclined-plane makes positioning boss to internal strain, drives the knock hole that the locating dowel pin head compresses interior vehicle frame.Unscrew flexible overcoat, then positioning boss outwards resets, and the locating dowel pin head is thrown off knock hole, and interior vehicle frame can be done telescopic moving.Move to the appropriate location, the flexible overcoat of screwing again is with the location.
Preferably, the existing certain intensity of material selection of flexible interior cover has required elastomeric material again, such as nylon.
Preferably, the external diameter of interior vehicle frame with flexible in the internal diameter of cover be on-circular cross-section, can prevent that like this both from circumferential rotation taking place, and locating dowel pin head and knock hole can not be alignd.Specifically can adopt 1, oval cross section; 2, flat tube cross section, 3, interior vehicle frame outer wall groove or raised line axially be set, on the inwall that in flexible, overlaps accordingly raised line or groove are set.
Preferably, the locating dowel pin head is arranged to semisphere.Locating dowel pin and pin-and-hole are screw thread fit, can regulate the depth that locating dowel pin screws in the pin-and-hole outside.
Preferably, the knock hole of interior vehicle frame is arranged in the axial groove, and this groove can be used as the track that the locating dowel pin head slips over.
Preferably, after positioning boss outwards resets, between locating dowel pin head and interior vehicle frame still protection contact and flexible stress.When flexible operation, the operator can feel that the locating dowel pin head slips over each knock hole like this, realizes accurately location.
Preferably, the junction surface at interior vehicle frame and flexible overcoat is provided with trim.It both can play decoration function, can prevent that also foreign matter from falling into.
The utility model also provides a kind of child's bicycle that uses above-mentioned vehicle frame telescoping mechanism.Can be three-wheel or two-wheeled perambulator, can be that the front-wheel crank-driven also can be the chain gear perambulator.
The beneficial effect of the utility model is: can control the flexible of front vehicle frame through the degree of tightness of flexible overcoat, thereby the adjustment saddle satisfies children's needs of different heights apart from the distance of handlebar.
Four, description of drawings
Fig. 1 is the exploded drawings of telescoping mechanism;
Fig. 2 is the exploded drawings of telescoping mechanism, and wherein flexible overcoat is a longitudinal section;
Fig. 3 is the cutaway view of telescoping mechanism assembled state;
Fig. 4 is the front view of the flexible interior cover of telescoping mechanism;
Fig. 5 is the section-drawing of Fig. 4 along the A-A direction;
Fig. 6 is the child's bicycle scheme drawing of the telescoping mechanism of use the utility model.
Among the figure: 1. vehicle frame, 101. knock holees in; 2. trim, 3. flexible overcoat, 301. annular slopes, 302. negative threads, 4. flexible in cover, 400, positioning boss, 401, inclined-plane, 402, outside thread, 403, pin-and-hole; 5. locating dowel pin, 501. is sold heads, 6. outer vehicle frame, 601. location notch holes.
Five, the specific embodiment
Below in conjunction with accompanying drawing, specify the embodiment of the utility model:
To shown in Figure 3, the vehicle frame telescoping mechanism of the utility model axially comprises successively like Fig. 1: interior vehicle frame 1, trim 2, flexible overcoat 3, flexible in cover 4, outer vehicle frame 6.
The external diameter of interior vehicle frame 1 is the flat tube cross section, and two two row knock holees 101 (Fig. 3) are arranged vertically, and knock hole 101 is arranged in the axial notch.
One end of trim 2 has the hole that cooperates with the external diameter of interior vehicle frame 1, and the other end engages with flexible overcoat 3.Both can arrive decoration function, again can the slit between interior vehicle frame 1 and the flexible overcoat 3 is airtight.
In conjunction with Fig. 4 Fig. 5, flexible interior cover 4 is a tubular part, and an end has the outside thread 402 that cooperates with the negative thread 302 of the overcoat 3 that stretches, and there is positioning boss 400 both sides, and positioning boss 400 nearly outside thread 402 sides are connected other three disconnections with flexible interior jacket wall.Be positioning boss 400 for cantilever-shaped, elastically deformable under external force.Positioning boss 400 ends are established pin-and-hole 403, interior installing and locating pin 5, the pin of locating dowel pin 5 501 inwardly stretch into flexible in the cover 4, cooperate with the knock hole 101 of interior vehicle frame 1.Locating dowel pin 5 is a screw thread fit with pin-and-hole 403, can regulate the depth that locating dowel pin 5 screws in pin-and-hole 403 outsides.Pin 501 is a semisphere.Positioning boss 400 is terminal to also have the inclined-plane 401 that cooperates with the annular slope 301 of flexible overcoat 3, and annular slope 301 these inclined-planes 401 of compressing can make positioning boss 400 elastic deformations, drive locating dowel pin 5 and in stretching, overlap 4 intrinsic displacements.
As shown in Figure 3, from inside to outside, interior vehicle frame 1, flexible in cover 4, outer vehicle frame 6, flexible overcoat 3 and trim 2 socket successively.Knock hole 101 engages with locating dowel pin head 5.During locked operation, the flexible overcoat 3 of screwing, its annular slope 301 compressing positioning boss inclined-planes 401 make positioning boss 400 to internal strain, drive locating dowel pin head 501 compress in the knock hole 101 of vehicle frame 1.Unscrew flexible overcoat 3, then positioning boss 400 outwards resets, and drives locating dowel pin head 501 and throws off knock hole 101, and interior vehicle frame 1 can be done telescopic moving.Because pin head 501 be sphere, and knock hole 101 is in groove, and in sliding during vehicle frame 1, selling 501 can slip over each knock hole 101 along groove.Move to the appropriate location, the flexible overcoat 3 of screwing again is with the location.
Fig. 6 is for using the child's tricycle of above-mentioned vehicle frame telescoping mechanism, and its front vehicle frame is interior vehicle frame 1, and back vehicle frame is outer vehicle frame 6.Regulate the flexible of vehicle frame as stated above, can change the distance between handlebar and saddle, be suitable for different height children's use.This vehicle frame telescoping mechanism can be used for the two-wheeled perambulator equally.
Claims (9)
1. a vehicle frame telescoping mechanism is characterized in that: comprise interior vehicle frame, outer vehicle frame, flexible interior cover, flexible overcoat;
Cover is tubular part in stretching, and an end has outside thread, and there is positioning boss one or both sides, and the nearly outside thread side of positioning boss is connected other three disconnections with flexible interior jacket wall; The positioning boss end is established pin-and-hole, and interior installing and locating pin, the pin head of locating dowel pin inwardly stretch in the flexible interior cover; The positioning boss end has an inclined-plane;
Flexible overcoat is a tubular structure, and its inwall one end has the negative thread that cooperates with flexible interior cover outside thread, and the other end has the annular slope that cooperates with the positioning boss inclined-plane;
Outer vehicle frame is a tubular structure, its internal diameter with flexible in the cover external diameter cooperates, can be socketed in flexible in outside the cover, with the cooresponding position of positioning boss location notch hole is arranged, positioning boss and location notch hole engaging realize flexible interior overlapping and being connected of outer vehicle frame;
The external diameter of interior vehicle frame matches with the internal diameter of flexible interior cover; Corresponding with locating dowel pin, there are row or two row to hold the knock hole of locating dowel pin head vertically;
From inside to outside, interior vehicle frame, flexible interior cover, outer vehicle frame, flexible overcoat socket successively.
2. a kind of vehicle frame telescoping mechanism as claimed in claim 1 is characterized in that: the external diameter of vehicle frame is an on-circular cross-section with the internal diameter of flexible interior cover in said.
3. a kind of vehicle frame telescoping mechanism as claimed in claim 2 is characterized in that: the external diameter of vehicle frame is an oval cross section with the internal diameter of flexible interior cover in said.
4. a kind of vehicle frame telescoping mechanism as claimed in claim 2 is characterized in that: in said the vehicle frame outer wall groove or raised line axially be set, flexible accordingly in the inwall of cover be provided with raised line or groove.
5. a kind of vehicle frame telescoping mechanism as claimed in claim 1 is characterized in that: said locating dowel pin head is a semisphere, and locating dowel pin and pin-and-hole are screw thread fit, and the pin-and-hole outside can be regulated the depth that locating dowel pin screws in.
6. a kind of vehicle frame telescoping mechanism as claimed in claim 1 is characterized in that: the knock hole of vehicle frame is arranged in the axial groove in said.
7. a kind of vehicle frame telescoping mechanism as claimed in claim 1 is characterized in that: the junction surface of vehicle frame and flexible overcoat in said is provided with trim.
8. perambulator is characterized in that: vehicle frame has adopted the vehicle frame telescoping mechanism of one of claim 1 to 7.
9. a kind of child's bicycle as claimed in claim 8 is characterized in that: said child's bicycle is the three-wheel child's bicycle of front-wheel crank-driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202319456U CN202193150U (en) | 2011-07-01 | 2011-07-01 | Frame retractable mechanism and bicycle for children with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202319456U CN202193150U (en) | 2011-07-01 | 2011-07-01 | Frame retractable mechanism and bicycle for children with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202193150U true CN202193150U (en) | 2012-04-18 |
Family
ID=45948073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202319456U Withdrawn - After Issue CN202193150U (en) | 2011-07-01 | 2011-07-01 | Frame retractable mechanism and bicycle for children with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202193150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285410A (en) * | 2011-07-01 | 2011-12-21 | 杭州萧山钱鸿交通器材有限公司 | Frame telescopic mechanism and child bike employing same |
-
2011
- 2011-07-01 CN CN2011202319456U patent/CN202193150U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285410A (en) * | 2011-07-01 | 2011-12-21 | 杭州萧山钱鸿交通器材有限公司 | Frame telescopic mechanism and child bike employing same |
| WO2013004150A1 (en) * | 2011-07-01 | 2013-01-10 | 杭州萧山钱鸿交通器材有限公司 | Frame telescopic mechanism and child bike employing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120418 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |