CN201630364U

CN201630364U - Self-locking pull head

Info

Publication number: CN201630364U
Application number: CN2010201257528U
Authority: CN
Inventors: 许荣批
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-08
Filing date: 2010-03-08
Publication date: 2010-11-17
Anticipated expiration: 2020-03-08

Abstract

The utility model provides a self-locking pull head with simple structure and reliable use, which comprises an upper fin, a lower fin, a guide post, a cover cap and a stop post. The guide post is arranged between the upper fin and the lower fin. The guide post, the upper fin and the lower fin are formed in an integrated manner and are fixedly connected with one another. The upper surface of the upper fin is provided with a front lug boss and a rear lug boss. The cover cap is arranged on the two lug bosses and is connected with the lug bosses in a riveting manner. One end of the stop post is fixedly arranged on the guide post, and the other end is hung on the upper fin and extends partially towards the lower fin so as to be clamped between two adjacent chain teeth for position stopping. The stop post is formed through the folding of a spring steel wire. The self-locking pull head is used for a zipper to exert the self-locking action so as to prevent accident sliding of the pull head.

Description

A kind of self-locked draught part

Technical field

The utility model relates to a kind of slide fastener, particularly a kind of self-locked draught part.

Background technology

Slide fastener has been known, and it generally comprises chain tooth, pull head, pulling-on piece, ends up and down, nationality by pull head on the chain tooth, walk the engagement that realizes slide fastener coupling element with separate.With reference to figure 1 and Fig. 2, known pull head comprises upper panel 1 ', lower panel 2 ', guide pillar 3 ', block 4 ', stop bit reed 5 ' and back-moving spring 6 ', wherein said upper panel 1 ' and lower panel 2 ' are by the setting that links to each other of guide pillar 3 ' one, upper panel 1 ' upper surface has upwardly extending lug boss 11 ', described block 4 ' is covered on the described lug boss 11 ' outside, make block 4 ' and upper panel 1 ' be fastenedly connected by punching press in the 4 ' lateral of blocking a shot being formed depressed part 41 ', described stop bit reed 5 ' is located at that upper panel 1 ' is gone up and the one end extends to be used to snap in to lower panel 2 ' part movably and stops pull head to slide on the chain tooth between two adjacent chain teeth, be positioned between block 4 ' inboard and the stop bit reed 5 ' and be provided with back-moving spring 6 ', in the time of assembling, the hinged stop bit reed 5 ' opening portion of being located at of one side of pulling-on piece, like this when drawing on the pulling-on piece, the elastic force that stop bit reed 5 ' overcomes back-moving spring 6 ' upwards rotates, the far-end of stop bit reed 5 ' makes pull head to slide relatively from leaving between the chain tooth, otherwise when pulling-on piece no longer applies pulling force, reenter at the effect lower position-arresting reed 5 ' of back-moving spring 6 ' and to prevent between the chain tooth that pull head from sliding.Its weak point of the pull head of this kind structure is that stop bit reed 5 ' is laminated structure, and it is difficult for the location at horizontal direction, so it does not always enter start stop bit effect between the adjacent chain tooth very swimmingly; Carry out the punching press action when blocking a shot 4 ' location in addition and can produce distortion, this might cause back-moving spring 6 ' loss of elasticity.

The utility model content

The purpose of this utility model provides a kind of simple in structure, service-strong self-locked draught part.

The technical scheme that the utility model adopted is such: a kind of self-locked draught part, comprise upper panel, lower panel, guide pillar, block and stop bit post, described guide pillar is located between upper panel and the lower panel and the three in one moulding is fixedlyed connected, the upper panel upper surface has former and later two lug bosses, be covered on these two lug bosses and both riveteds connections, described stop bit post one end is fixedly arranged on the guide pillar, the stop bit post other end be suspended on the upper panel and to lower panel local extend to be used to snap between the two adjacent chain teeth carry out stop bit, described stop bit post forms by spring steel wire is folding.

Above-mentioned self-locked draught part, two sides of described block are respectively equipped with boss, and the position of corresponding each boss of described upper panel is respectively equipped with the riveting part, and each riveting part is pressed and is located on the boss of respective side when block is covered on the upper panel lug boss.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are to substitute known stop bit reed by the stop bit post that adopts spring steel wire to make, on the one hand, fixing reliably with guide pillar of stop bit post, stop bit post strain up and down can not take place crooked and can snap in start stop bit effect between two adjacent chain teeth exactly.

Description of drawings

Fig. 1 is the stereogram of known pull head;

Fig. 2 is the cutaway view of known pull head;

Fig. 3 is that the utility model embodiment decomposes front view;

Fig. 4 is that the utility model embodiment decomposes left view;

Fig. 5 is the utility model embodiment view sub-anatomy;

The specific embodiment

With reference to figure 3, Fig. 4 and Fig. 5, embodiment discloses a kind of self-locked draught part, comprise upper panel 1, lower panel 2, guide pillar 3, block 4, stop bit post 5, described guide pillar 3 is located between upper panel 1 and the lower panel 2 and the three in one moulding is fixedlyed connected and form two chain middlemen between upper panel 1 and lower panel 2 walks passage, upper panel 1 upper surface is provided with lug boss 11 and lug boss 12, block 4 promptly is covered on these two lug bosses and both riveteds connect, in traditional block and upper panel connected mode, all it is fixed to the lug boss depression by punching press block lateral wall, this kind connected mode causes the block distortion easily in assembling process, the back-moving spring of being located at like this in the block will lose reset response, in the present embodiment, 4 two lateral surfaces of described block have two boss 41 respectively, the position of described upper panel 1 corresponding each boss 41 has upwardly extending riveting part 13, when block 4 is covered on lug boss 11 and lug boss 12, two riveting parts 13 are depressed to the centre, 4 two boss 41 of then blocking a shot are closely linked into an integrated entity with upper panel 1 by the spacing feasible block 4 of respective side riveting part 13, block 4 is subjected to the less and unlikely distortion of external force when assembling like this, stop bit post 5 one ends are fixedly arranged on the guide pillar 3, stop bit post 5 other ends be suspended on the upper panel 1 and to lower panel 2 local extend to be used to snap between the two adjacent chain teeth carry out stop bit, whole stop bit post 5 forms and roughly is down " U " shape by spring steel wire is folding, thereby when stop bit post 5 one ends were fastened on the guide pillar 3, the free end of stop bit post 5 can be brought into play the stop bit effect and unlikely generation is crooked.During actual the use, an end of pulling-on piece 6 is arranged between block 4 and the upper panel 1, and pulling-on piece 6 is crossed at stop bit post 5 middle parts, and when pulling-on piece 6 was stressed, stop bit post 5 free ends left from the chain tooth, pull head chain tooth slip relatively like this.

Claims

1. self-locked draught part, it is characterized in that: comprise upper panel, lower panel, guide pillar, block and stop bit post, described guide pillar is located between upper panel and the lower panel and the three in one moulding is fixedlyed connected, the upper panel upper surface has former and later two lug bosses, be covered on these two lug bosses and both riveteds connections, described stop bit post one end is fixedly arranged on the guide pillar, the stop bit post other end be suspended on the upper panel and to lower panel local extend to be used to snap between the two adjacent chain teeth carry out stop bit, described stop bit post forms by spring steel wire is folding.

2. self-locked draught part according to claim 1, it is characterized in that: two sides of described block are respectively equipped with boss, the position of corresponding each boss of described upper panel is respectively equipped with the riveting part, and each riveting part is pressed and is located on the boss of respective side when block is covered on the upper panel lug boss.