CN201507522U

CN201507522U - Bolt

Info

Publication number: CN201507522U
Application number: CN2009201344345U
Authority: CN
Inventors: 曹宝华
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2009-07-30
Filing date: 2009-07-30
Publication date: 2010-06-16
Anticipated expiration: 2019-07-30

Abstract

The utility model relates to a bolt which comprises a bolt body, a bolt core, a bolt cover and a ball, wherein the bolt body is provided with a axially through core hole, the bolt core can be movably arranged in the core hole, one end of the bolt body is engageably installed with the bolt cover, the core hole consists of a core hole large portion and a core hole small portion, a step portion is formed between the core hole large portion and the core hole small portion, one end of the bolt core on the core hole large portion is provided with a boss, and one end of the bolt core on the core hole small portion is provided with a ball groove for partially holding the ball, one end of the core hole small portion of the bolt body is provided with a ball hole which is matched with the ball groove on the bolt core, partially holds the ball, and can limit the ball not to separate from the bolt body, an elastic component is further arranged in the core hole large portion, the bolt cover is provided with a through-hole, one end of the bolt core with the boss penetrates through the through-hole and penetrates out of the bolt cover, and the boss can abuts tothe bolt cover under the action of the elastic component.

Description

A kind of latch

Technical field

The utility model relates to a kind of latch.

Background technique

Latch is the most frequently used a kind of manually-operable annex that arrives in all kinds of mechanical fixation, and it has very important effect as the relative limit safety installations, is widely used in and occasions such as tube wall is connected.

But at present, in all kinds of latches of on market, using, all there is not the function of safe locking basically.Latch of the prior art 100 as shown in Figure 1, owing to there is not a safe latch functions, when vibration takes place or during other reason, latch 100 comes off from the connection parts of connecting body easily, and causes potential safety hazard.

The model utility content

For solving latch in the prior art and not having the function of safe locking, existence come off easily problem, the utility model provides a kind of latch, can prevent that latch from coming off from the connection part of connecting body.

The utility model provides a kind of latch, comprise latch body, latch core, plug pin cap and spin, described latch body has a core hole that axially connects, described latch core is arranged in this core hole movably, one end of described latch body cooperates installation with plug pin cap, described core hole comprises big portion in core hole and core hole smaller part, and forms end difference between big portion in core hole and the core hole smaller part; The end that described latch core is positioned at the big portion in core hole is provided with boss, and an end that is positioned at core hole smaller part is provided with the spin groove that can partly hold spin, one end of the core hole smaller part of described latch body is provided with can partly holding spin and can limiting the spin hole that spin breaks away from the latch body of matching with spin groove on the described latch core, also be provided with elastic member in the big portion in described core hole, described plug pin cap has a through hole, the end that described latch core has a boss is arranged in this through hole and stretches out described plug pin cap, and this boss is replaced described plug pin cap under the elastic member effect.

Because latch has designed latch body, latch core and ball etc. in the utility model, simple in structure, the function of safe locking is finished in the common cooperation between each parts.Do the time spent in no external force, the latch core is contained in the spin hole of latch body spin under the effect of spring, and spin partly is exposed to the latch body, fasten on the connection part of connecting body, latch can not come off from connecting body, so just can play the effect of safe locking; When needs are dismantled, as long as the latch core is pressed, the latch core overcomes the active force of spring, be moved, at this moment, the spin groove of latch core and the spin hole of latch body align, spin rolls in the spin groove of latch core, thereby realize removing the effect of locking, reach the purpose of fast assembling-disassembling, can realize recycling.

Description of drawings

Fig. 1 is the assembling schematic representation of a kind of latch in the prior art;

Fig. 2 is the cross-sectional schematic according to a kind of mode of execution of a kind of latch of the present utility model;

Fig. 3 is the cross-sectional schematic according to the latch body of a kind of mode of execution of a kind of latch of the present utility model;

Fig. 4 is the cross-sectional schematic according to the plug pin cap of a kind of mode of execution of a kind of latch of the present utility model;

Fig. 5 is the cross-sectional schematic according to the latch core of a kind of mode of execution of a kind of latch of the present utility model.

Embodiment

To and come in conjunction with the accompanying drawings the utility model is elaborated by embodiment below.

Shown in Fig. 2 is extremely shown in Figure 5, a kind of mode of execution according to a kind of latch of the present utility model, comprise latch body 1, latch core 2, plug pin cap 3 and spin 4, described latch body 1 has a core hole 10 that axially connects, described latch core 2 is arranged in this core hole 10 movably, Spielpassung between described latch body 1 and the latch core 2.One end of described latch body 1 cooperates installation with plug pin cap 3, and described core hole 10 comprises big portion 11 in core hole and core hole smaller part 12, and forms end difference 13 between big portion 11 in core hole and the core hole smaller part 12; The end that described latch core 2 is positioned at the big portion 11 in core hole is provided with boss 110, and an end that is positioned at core hole smaller part 12 is provided with the spin groove 120 that can partly hold spin 4, and an end of the core hole smaller part 12 of described latch body 1 is provided with and breaks away from the spin hole 111 of latch bodies 1 can partly holding spin 4 and can limiting spin 4 of matching with spin groove 120 on the described latch core 2.Also be provided with elastic member 5 in the big portion 11 in described core hole, described plug pin cap 3 has a through hole 30, the end that described latch core 2 has a boss 110 is arranged in this through hole 30 and stretches out described plug pin cap 3, and this boss 110 is replaced described plug pin cap 3 under elastic member 5 effects.

Described boss 110 can be the outer surface that is spaced apart and arranged in latch core 2 equably, also can be the setting that the outer surface along latch core 2 roughly circularizes.

The outer surface of the big portion 11 in the core hole of described latch body 1 is provided with outside thread, and the internal surface of described plug pin cap 3 is provided with the internal thread that cooperates with the outside thread of above-mentioned latch body 1, described latch body 1 and described plug pin cap 3 screw-thread fit.

Spin groove 120 on the described latch core 2 is at least one, and described spin groove 120 is that hemisphere is poroid, and the aperture is slightly larger than the diameter of spin 4.As another kind of mode of execution, it also is a kind of mode of execution that the utility model adopts, spin groove 120 on the described latch core 2 is for being arranged on the spin groove 120 that circularizes on the latch core 2, and described spin groove 120 sectional shapes are that hemisphere is poroid, and the aperture is slightly larger than the diameter of spin.

Described spin hole 111 is at least one, and described spin hole 111 is tapered, and its aperture dwindles towards latch body 1 outer wall gradually from latch body 1 inwall, and the minimum-value aperture in described spin hole 111 is slightly less than the diameter of spin 4.A kind of mode of execution of employing of the present utility model, described spin hole 111 are two and get final product, and are arranged on pin symmetrically and insert on the body 1.

Described elastic member 5 is sheathed on the latch core 2, and an end is replaced described end difference 13, and the other end is replaced the boss 110 of described latch core 2, thereby makes boss 110 replace described plug pin cap 3 under elastic member 5 effects.Described elastic member 5 can be spring and rubber parts, a kind of mode of execution that the utility model adopts, and described elastic member 5 is a spring.

The wall thickness of described latch body 1 is less than the diameter of described spin 4 radius greater than described spin 4.

The latch of a kind of mode of execution of the present utility model has designed latch body 1, latch core 2 and ball 4 etc., and simple in structure, the function of safe locking is finished in the common cooperation between each parts.Do the time spent in no external force, latch core 2 is under the effect of spring 5, make the cooperation of staggering mutually of spin groove 120 and spin hole 111, spin 4 is contained in the spin hole 11 of latch body 1, and spin 4 parts are exposed to latch body 1, and 2 this moments replaced spin 4 by the latch core, and spin 4 fastens on the connection part of connecting body, latch can not come off from connecting body, so just can play the effect of safe locking.And when needing fast quick-detach, as long as latch core 2 is pressed, latch core 2 overcomes the active force of spring 5, be moved, at this moment, the spin groove 120 of latch core 2 aligns with the spin hole 111 of latch body 1, the tapered slope of spin 4 in spin hole, action of gravity lower edge 111 rolls in the spin groove 120 of latch core 2, thereby make the effect that realizes removing locking, reach the purpose of fast assembling-disassembling, can realize recycling.

Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although the utility model is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the utility model, the any modification or partial replacement that does not break away from spirit and scope of the present utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. latch, comprise the latch body, it is characterized in that, also comprise latch core, plug pin cap and spin, described latch body has a core hole that axially connects, and described latch core is arranged in this core hole movably, and an end of described latch body cooperates installation with plug pin cap, described core hole comprises big portion in core hole and core hole smaller part, and forms end difference between big portion in core hole and the core hole smaller part; The end that described latch core is positioned at the big portion in core hole is provided with boss, and an end that is positioned at core hole smaller part is provided with the spin groove that can partly hold spin, one end of the core hole smaller part of described latch body is provided with can partly holding spin and can limiting the spin hole that spin breaks away from the latch body of matching with spin groove on the described latch core, also be provided with elastic member in the big portion in described core hole, described plug pin cap has a through hole, the end that described latch core has a boss is arranged in this through hole and stretches out described plug pin cap, and this boss is replaced described plug pin cap under the elastic member effect.

2. latch as claimed in claim 1 is characterized in that: described pin shank and described plug pin cap screw-thread fit.

3. latch as claimed in claim 1 is characterized in that: the spin groove on the described latch core is at least one, and described spin groove is that hemisphere is poroid, and the aperture is slightly larger than the diameter of spin.

4. latch as claimed in claim 1 is characterized in that: the spin groove on the described latch core is the spin groove that circularizes that is arranged on the latch core, and it is poroid that described spin slot cross-section is shaped as hemisphere, and the aperture is slightly larger than the diameter of spin.

5. latch as claimed in claim 1 is characterized in that: described spin hole is at least one, and described spin hole is tapered, and its aperture dwindles towards the external wall of latch gradually from latch body inwall, and the minimum-value aperture in described spin hole is slightly less than the diameter of spin.

6. latch as claimed in claim 1 is characterized in that: described elastic member is a spring.

7. latch as claimed in claim 1 is characterized in that: the wall thickness of described latch body is less than the diameter of the described spin radius greater than described spin.

8. latch as claimed in claim 1 is characterized in that: Spielpassung between described latch body and the latch core.

9. latch as claimed in claim 1 is characterized in that: described elastic member is sheathed on the latch core, and an end is replaced described end difference, and the other end is replaced the boss of described latch core.