CN202089186U

CN202089186U - Locking mechanism and folding connector

Info

Publication number: CN202089186U
Application number: CN2011201820828U
Authority: CN
Inventors: 黄华平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-01
Filing date: 2011-06-01
Publication date: 2011-12-28
Anticipated expiration: 2021-06-01

Abstract

The utility model discloses a locking mechanism, which comprises a handle and a pair of lug rings, a pull ring, an eccentric cam and a shaft pin, wherein the lug rings are provided with eccentric holes and arranged at one end of the handle, one end of the pull ring is a column provided with a thread hole, and the other end of the pull ring is an annular body. The external contour of the eccentric cam is matched with the inner contours of eccentric holes of the lug rings, the annular body of the pull ring extends between the pair of lug rings of the handle, and the eccentric cam penetrates through the eccentric holes of the pair of lug rings to be sleeved in the pull ring. The shaft pin penetrates through a rotating shaft hole of the eccentric cam. The thread hole at the other end of the pull ring is connected with a bolt, and a nut, a spring and a clamping piece are sleeved on a bolt rod in sequence. The utility model further discloses a folding connector provided with the locking mechanism. The locking mechanism and the folding connector are simple in structure, convenient to process, convenient and fast to operate and reliable to lock.

Description

A kind of catch gear and folding joint

Technical field

The utility model relates to folding device, especially relates to a kind of catch gear and folding joint that is used for folding bicycle handlebar vertical tube and vehicle frame folding.

Background technology

Folding bicycle obtains liking of consumers in general with the characteristics of its fast folding or expansion.Behind bicycle folding, smaller volume greatly facilitates transportation and storage; Can use safely again after the expansion, be convenient to people's sport and body-building or ride instead of walk.After the girder of bicycle is folding, the front and back wheel of car was overlapping substantially, and the length of car reduces; When the handlebar vertical tube of bicycle is folding downwards, the height of car load will reduce, the space that so dwindles bicycle and occupied.Industry is used for the girder of bicycle or folding of handlebar vertical tube with folding joint.After common handlebar vertical tube launches, need to use catch gear provided thereon two connecting panels locking, occur potential safety hazard to prevent the handlebar vertical tube from folding folding joint.But, the locking device structure complexity of the folding joint of existing handlebar vertical tube, operation inconvenience.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides the catch gear and the folding joint of a kind of simple in structure, simple operation, reliable lock.

The catch gear that the utility model proposes, it comprises one handle, is located at a pair of earrings that has eccentric orfice of this handle one end.One draw ring, one end are that the cylinder, the other end that are provided with tapped bore are ring bodies; Profile phase is adaptive in one eccentric cam, the eccentric orfice of the earrings of its outline and described handle; The ring bodies of described draw ring stretches between a pair of earrings of handle, and described eccentric cam penetrates in the eccentric orfice of a pair of earrings draw ring is placed on the eccentric cam, and a pivot pin passes the shaft hole of eccentric cam.The tapped bore of the described draw ring other end and a bolted connection are with nut, spring and Fastener successively on this bolt shank.

More excellent, less cam contour one side of described eccentric cam curvature can have groove, and this groove communicates with the shaft hole of eccentric cam, and the length of groove is greater than the thickness of described draw ring ring bodies one end.

A kind of folding joint that has described catch gear, it comprises that a side is provided with the last folded piece of upper lug, folded piece lower surface side relative with described upper lug is provided with boss on this.Boss is provided with the knock hole of bolt and spring.Comprise that also a side is provided with down the following folded piece of lug.Pivot pin in the described catch gear is with coaxial being hinged together of earrings of upper lug, following lug and handle, the boss knock hole that bolt in the catch gear passes upper lug is connected with the tapped bore of described draw ring, be with described nut on the bolt shank between draw ring and the boss, be with described Fastener on the bolt shank between bolt cap and the boss, be with described spring on the bolt shank between Fastener and the boss.When described handle forwards a position to, under the effect of eccentric cam, drive the outer rim that screw rod is clamped in Fastener upper and lower lug; When described handle reversing sense forwarded the another location to, it drove screw rod, Fastener was broken away from automatically the outer rim of upper and lower lug under the effect of spring.

More excellent, the outer rim of described upper and lower lug and described Fastener relative position are provided with the groove that is used for the Fastener chucking.

Described pivot pin can be made of several sections shaft parts; The described upper lug that goes up folded piece reaches down, and the following lug of folded piece is a plurality of or how right.

Compared with prior art, the utility model adopts directly adaptive structure of eccentric cam outer margin contour and handle earrings hole, during turning handle, can directly drive the eccentric cam rotation, makes the simple in structure of this catch gear like this, and is easy to process.And simple operation, reliable lock.

Description of drawings

Below in conjunction with embodiment and accompanying drawing the utility model is elaborated, wherein:

Fig. 1 is the exploded view of the preferred embodiment of the utility model folding joint;

Fig. 2 is the last folded piece downside perspective view of the utility model folding joint;

Fig. 3 is the scheme drawing that the utility model folding joint unclamps;

Fig. 4 is the scheme drawing of the utility model folding joint locking.

The specific embodiment

See also Fig. 1, the catch gear that the utility model proposes, it comprises one handle 1, is located at a pair of earrings 2 of this handle upper end, and this earrings has eccentric orfice.One draw ring 3, its left end are that the cylinder, the right-hand member that are provided with tapped bore are ring bodies.Profile phase is adaptive in one eccentric cam 4, the eccentric orfice of the earrings 2 of its outline and handle.The ring bodies of draw ring 3 right-hand members stretches between a pair of earrings 2 of handle, and eccentric cam 4 penetrates in the eccentric orfice of a pair of earrings 2, and draw ring is placed on the eccentric cam 4 couples together with earrings, also has a pivot pin 5 to pass the shaft hole of eccentric cam 4.The tapped bore of draw ring 3 left ends is connected with a bolt 6, is with nut 7, spring 8 and Fastener 9 on this bolt shank from right to left successively.In the utility model preferred embodiment, less cam contour one side of eccentric cam 4 curvature has groove 10, this groove communicates with the shaft hole of eccentric cam, the length of groove is greater than the thickness of draw ring 3 ring bodies, promptly make draw ring 3 ring bodies can be embedded in this groove 10, circle can contact with pivot pin 5 in the ring bodies.

As shown in Figure 1, have the folding joint of the utility model catch gear, it comprises that the right side is provided with the last folded piece 12 of a pair of upper lug 11, and left side relative with upper lug, folded piece lower surface is provided with the boss 13(in a strap bolt hole please in conjunction with Fig. 2 on this).Comprise that also the right side is provided with a pair of following folded piece 15 of lug 14 down.The upper lug 11 that the earrings 2 that draw ring 3 and eccentric cam 4 are housed is placed down in the middle of the following lug 14 of folded piece 15, will go up folded piece 12 places down the both sides of lug 14, again with earrings 2 coaxial are hinged together of the pivot pin in the catch gear 5 with upper lug 11, time lug 14 and handle.The boss 13 that bolt 6 in the catch gear passes upper lug is connected with the tapped bore of draw ring 3, be with nut 7 on the bolt shank between draw ring and the boss, be with Fastener 9 on the bolt shank between bolt cap and the boss, be with spring 8 on the bolt shank between Fastener and the boss.The preferred embodiment of folding joint of the present utility model, the outer rim and Fastener 9 relative positions of upper lug 11, following lug 14 are provided with the groove that is used for the Fastener chucking.The middle part of last folded piece 12 also has the adjustment hole 16 of adjusting described nut 7 positions.Pivot pin 5 also can constitute an axle by several sections shaft parts; The following lug 14 of folded piece can be for a plurality of or how right under the upper lug 11 of last folded piece reached.

When handle 1 forwards downward position to, as shown in Figure 3, handle 1 drives the bigger cam contour of the curvature of eccentric cam 4 towards the left side, under the spring force effect, the interior circle of draw ring 3 ring bodies contacts with pivot pin 5, bolt 6 is moved to the left, make the Fastener 9 and the outer rim of upper lug 11 and following lug 14 disengage, so upper and lower folded piece just can relatively rotate and fold around pivot pin 5.To go up folded piece 12 and following folded piece 15 closes, when described handle 1 forwards the position that makes progress to, as shown in Figure 4, handle 1 drives the bigger cam contour of the curvature of eccentric cam 4 towards the right, the interior circle of cam contour roof pressure draw ring 3 ring bodies that the curvature of eccentric cam 4 is bigger, impel draw ring 3 and bolt 6 together to move right, thereby drive in the groove of outer rim that screw rod 6 is clamped in Fastener 9 upper lug 11 and following lug 14 securely, so that will go up folded piece 12 and link into an integrated entity with following folded piece 15.Adjustment hole 16 by last folded piece 12 middle parts can setting nut 7, and is to guarantee the locking force of bolt 6 and draw ring 3, very convenient.

The utility model adopts directly adaptive structure of eccentric cam outer margin contour and handle earrings hole, during turning handle, can directly drive the eccentric cam rotation, makes the simple in structure of this catch gear like this, and is easy to process.And simple operation, reliable lock.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; 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 present utility model.

Claims

1. catch gear is characterized in that: comprise one handle (1), be located at a pair of earrings (2) that has eccentric orfice of this handle one end; One draw ring (3), one end are that the cylinder, the other end that are provided with tapped bore are ring bodies; Profile phase is adaptive in one eccentric cam (4), the eccentric orfice of the earrings of its outline and described handle (2); The ring bodies of described draw ring (3) stretches between a pair of earrings of handle (2), and described eccentric cam (4) penetrates in the eccentric orfice of a pair of earrings (2) draw ring is placed on the eccentric cam, and a pivot pin (5) passes the shaft hole of eccentric cam (4); The tapped bore of described draw ring (3) other end is connected with a bolt (6), is with nut (7), spring (8) and Fastener (9) on this bolt shank successively.

2. catch gear as claimed in claim 1, it is characterized in that: less cam contour one side of described eccentric cam (4) curvature has groove (10), this groove communicates with the shaft hole of eccentric cam, the length of groove greater than described draw ring (3) ring bodies+thickness.

3. one kind has the folding joint of catch gear according to claim 1, it is characterized in that: comprise that a side is provided with the last folded piece (12) of upper lug (11), folded piece lower surface side relative with described upper lug is provided with boss (13) on this; Boss (13) is provided with the knock hole of bolt (6) and spring (8); Comprise that also a side is provided with down the following folded piece (15) of lug (14); Pivot pin in the described catch gear (5) is with coaxial being hinged together of earrings (2) of upper lug (11), following lug (14) and handle, the knock hole that bolt in the catch gear (6) passes on the boss (13) is connected with the tapped bore of described draw ring (3), be with described nut (7) on the bolt shank between draw ring and the boss, be with described Fastener (9) on the bolt shank between bolt cap and the boss, be with described spring (8) on the bolt shank between Fastener and the boss; When described handle (1) forwards a position to, under the effect of eccentric cam (4), drive the outer rim that screw rod (6) is clamped in Fastener (9) upper and lower lug (11,14); When described handle (1) when reversing sense forwards the another location to, the outer rim that it drives screw rod (6) and under spring (8) effect Fastener (9) is broken away from upper and lower lug (11,14) automatically.

4. folding joint as claimed in claim 3 is characterized in that: the outer rim of described upper and lower lug (11,14) and described Fastener (9) relative position are provided with the groove that is used for the Fastener chucking.

5. folding joint as claimed in claim 4 is characterized in that: described pivot pin (5) is made of several sections shaft parts; The described upper lug (11) that goes up folded piece (12) reaches down, and the following lug (14) of folded piece (15) is a plurality of.