CN102072233A

CN102072233A - Plastic rivet fastener

Info

Publication number: CN102072233A
Application number: CN 201110032813
Authority: CN
Inventors: 唐林义
Original assignee: Rui Solid (xiamen) Precision Parts Co Ltd
Current assignee: Rui Solid (xiamen) Precision Parts Co Ltd
Priority date: 2011-01-30
Filing date: 2011-01-30
Publication date: 2011-05-25

Abstract

The invention discloses a plastic rivet fastener. The plastic rivet fastener consists of a pin and a pin bush, wherein the pin is provided with a pressing surface and a pin column; the pin column is provided with a clamping groove; the pin bush is provided with a clamping surface and a sleeve; the sleeve is provided with a cut groove, an expansion clamping sheet and a clamping hook; and the tail end of the expansion clamping sheet corresponds to the pin column and is contracted towards the center. The clamping hook is added, and the clamping groove is formed on the pin column, so that the clamping hook is just clamped in the clamping groove while the expansion clamping sheet is expanded, the pin column and the sleeve are positioned and not loosened, and the expansion clamping sheet is effectively prevented from being returned; therefore, a plurality of thin plates are riveted through the clamping surface of the pin bush and the expansion clamping sheet, and can be assuredly and effectively fastened.

Description

A kind of Plastic Rivets fastening piece

Technical field

The present invention relates to a kind of Plastic Rivets fastening piece, be applicable to that the assembling of slim sheet materials such as circuit board is fixed.

Background technique

In the prior art, be used to assemble the fastening piece of slim sheet materials such as fixing circuit board shown in Fig. 1, Fig. 1-1, Fig. 1-2, Fig. 1-3 and Fig. 1-4, form by pin 10 and guide 20, pin 10 has pushing surface 101 and pin 102, guide 20 has gripping surface 201 and sleeve 202, the end of sleeve 202 is the reducing shape, offers " cross " profile groove 203 on the sleeve 202 and forms expansion clamp clip 204.

This fastening piece assembling shipment state is shown in Fig. 2, Fig. 2-1, Fig. 2-2, Fig. 2-3 and Fig. 2-4, and the pin 102 of pin 10 is plugged in the sleeve 202 of guide 20.

When reality is used, shown in Fig. 3, Fig. 3-1, Fig. 3-2 and Fig. 3-3, the pin 10 and the guide 20 that are nested with are together inserted in the mounting hole of slim sheet material 30, push the pushing surface 101 of pin 10, pin 102 is stretched in the sleeve 202 of guide 20, and the end of pin 102 struts the reducing shape end of sleeve 202, and expansion clamp clip 204 is expanded, by the gripping surface 201 of guide 20 and expansion clamp clip 204 slim sheet material is clamped fixingly, finished the assembling of slim sheet material 30 and fix.

Examine above-mentioned fastening piece, be not difficult to find it in use, because there is not the position structure restriction after expansion clamp clip 204 expands, so, pin 10 is loosening easily, and pin 102 is withdrawed from from sleeve 202, and expansion clamp clip 204 loses the strength that struts and withdraws and reset, releasing is clamped slim sheet material, causes fastening inefficacy.

Based on the problems referred to above, the inventor improves the structure of existing fastening piece, and this case produces thus.

Summary of the invention

The object of the present invention is to provide a kind of Plastic Rivets fastening piece, to realize fastening effect really, effectively.

To achieve these goals, technological scheme of the present invention is as follows:

A kind of Plastic Rivets fastening piece, form by pin and guide, pin has pushing surface and pin, design has draw-in groove on the pin, guide has gripping surface and sleeve, offer profile groove on the sleeve and form expansion clamp clip and grab, the terminal corresponding pin of expansion clamp clip is to the center recessed shape, and grab inserts the draw-in groove that blocks just when putting in place on the pin at pin.

The epimere of described sleeve lining forms fin, and the lower end of pin forms groove.

Symmetry is offered " cross " profile groove on the described sleeve, forms two expansion clamp clips and two grabs of symmetry.

After adopting such scheme, the present invention is because increased grab, and design has draw-in groove on pin, make that when the expansion clamp clip was strutted, grab was stuck in the draw-in groove just, make pin and sleeve the location and no longer get loose, thereby effectively prevent the clamp clip return that expands, like this, by gripping surface and some blocks of slim sheet materials of expansion clamp clip riveted of guide, can realize fastening effect really, effectively.

The present invention will be further described below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing fastening piece;

Fig. 1-the 1st, the plane exploded view one of existing fastening piece;

Fig. 1-2 is the sectional view of Fig. 1-1;

Fig. 1-the 3rd, the plane exploded view two of existing fastening piece;

Fig. 1-the 4th, the sectional view of Fig. 1-3;

Fig. 2 is the schematic perspective view of existing fastening piece assembling shipment state;

Fig. 2-the 1st, the floor map one of existing fastening piece assembling shipment state;

Fig. 2-the 2nd, the sectional view of Fig. 2-1;

Fig. 2-the 3rd, the floor map two of existing fastening piece assembling shipment state;

Fig. 2-the 4th, the sectional view of Fig. 2-3;

Fig. 3 is the side view of the existing actual user mode of fastening piece;

Fig. 3-the 1st, the plan view of the existing actual user mode of fastening piece;

Fig. 3-the 2nd, the A-A sectional view of Fig. 6-1;

Fig. 3-the 3rd, the B-B sectional view of Fig. 6-1;

Fig. 4 is a plane exploded view one of the present invention;

Fig. 4-the 1st, plane exploded view two of the present invention;

Fig. 5 is the schematic perspective view that the present invention assembles the shipment state;

Fig. 5-the 1st, the present invention assemble the floor map one of shipment state;

Fig. 5-the 2nd, the sectional view of Fig. 5-1;

Fig. 5-the 3rd, the partial enlarged drawing of Fig. 5-2;

Fig. 5-the 4th, the present invention assemble the floor map two of shipment state;

Fig. 6 is the side view of the actual user mode of the present invention;

Fig. 6-the 1st, the plan view of the actual user mode of the present invention;

Fig. 6-the 2nd, the A-A sectional view of Fig. 6-1;

Fig. 6-the 3rd, the B-B sectional view of Fig. 6-1.

Label declaration

Pin 10 pushing surfaces 101 pins 102

Guide 20 gripping surfaces 201 sleeves 202

Profile groove 203 expansion clamp clips 204

Slim sheet material 30

Pin 1 pushing surface 11 pins 12

Draw-in groove 13 grooves 14

Guide 2 gripping surfaces 21 sleeves 22

Profile groove 23 expansion clamp clips 24 grabs 25

Fin 26

Slim sheet material 3.

Embodiment

Shown in Fig. 4 and Fig. 4-1, be the preferred embodiment of a kind of Plastic Rivets fastening piece of the present invention, form by pin 1 and guide 2.Pin 1 has pushing surface 11 and pin 12, and the stage casing design of pin 12 has draw-in groove 13.Guide 2 has gripping surface 21 and sleeve 22, offer profile groove 23 on the sleeve 22 and form expansion clamp clip 24 and grab 25, the terminal corresponding pin 12 of expansion clamp clip 24 is to the center recessed shape, wherein, the number of expansion clamp clip 24 and grab 25 is not limited by this paper, this embodiment symmetry on sleeve 22 is offered " cross " profile groove 23, forms two expansion clamp clips 24 and two grabs 25 of symmetry.

Plastic Rivets fastening piece assembling shipment state of the present invention is shown in Fig. 5, Fig. 5-1, Fig. 5-2, Fig. 5-3 and Fig. 5-4, and the pin 12 of pin 1 is plugged in the sleeve 22 of guide 2.In order to guarantee that pin 1 and guide 2 assemble shipment completely, this embodiment forms fin 26 at the epimere of sleeve 22 inwalls, and the lower end of pin 11 forms groove 14, cooperates by fin 26 and groove 14, can prevent that pin 1 and guide 2 from disperseing, losing.

When the present invention uses in reality, as Fig. 6, Fig. 6-1, shown in Fig. 6-2 and Fig. 6-3, the pin 1 and the guide 2 that are nested with are together inserted in the mounting hole of slim sheet material 3, push the pushing surface 11 of pin 1, pin 12 is stretched in the sleeve 22 of guide 2, the end of pin 12 struts the reducing shape end of sleeve 22, expansion clamp clip 24 is expanded, gripping surface 21 and expansion clamp clip 24 by guide 2 are clamped slim sheet material fixing, simultaneously, grab 25 colludes just and is stuck in the draw-in groove 13, make pin 12 and sleeve 22 location and no longer reset, effectively prevent pin 12 from from sleeve 22, withdrawing from and cause expansion clamp clip 24 returns, really, realize that effectively the assembling of slim sheet material 3 fixes.

In a word, the present invention has been because increased the position structure of being made up of the draw-in groove 13 on grab 25 and the pin 12, so, limited that pin 1 is loosening to be withdrawed from from sleeve 22 with pin 12, guaranteed fastening effect.

The above is one embodiment of the present of invention only, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.

Claims

1. Plastic Rivets fastening piece, it is characterized in that: form by pin and guide, pin has pushing surface and pin, design has draw-in groove on the pin, guide has gripping surface and sleeve, offer profile groove on the sleeve and form expansion clamp clip and grab, the terminal corresponding pin of expansion clamp clip is to the center recessed shape, and grab inserts the draw-in groove that blocks when putting in place on the pin at pin.

2. a kind of Plastic Rivets fastening piece as claimed in claim 1 is characterized in that: the epimere of described sleeve lining forms fin, and the lower end of pin forms groove.

3. a kind of Plastic Rivets fastening piece as claimed in claim 1 is characterized in that: symmetry is offered " cross " profile groove on the described sleeve, forms two expansion clamp clips and two grabs of symmetry.