CN2856551Y

CN2856551Y - Lock structure

Info

Publication number: CN2856551Y
Application number: CN 200520136637
Authority: CN
Inventors: 白井信司
Original assignee: Tokai Rika Co Ltd
Current assignee: Tokai Rika Co Ltd
Priority date: 2004-12-15
Filing date: 2005-12-13
Publication date: 2007-01-10
Anticipated expiration: 2015-12-13
Also published as: JP4354901B2; CN1789736A; CN100395458C; JP2006170305A

Abstract

A lock structure is provided. A bridge part 23 is formed on the outer surface 19b of the first engagement piece 19 having the first engagement hole 18 so as to cross the first engagement hole 18. Since the first engagement projected part 25 interferes with the engagement piece 19 when the first engagement projected part 25 of an insulator 13 is engaged with the engagement hole 18 in a switch body 12, the inner surface 19a of the engagement piece 19 is cut off by the engagement projected part 25 to generate, a so-called, the fitting burrs. Even if the fitting burrs occur, the fitting burrs can be prevented from spattering from the engagement hole 18 to the outside since they are collided with the bridge part 23 installed so as to cross the engagement hole 18.

Description

Lock structure

Technical field

The utility model relates to and a kind ofly slips into the lock structure that fastening (snap fit) structure fastens card complex hole and engaging protuberance by so-called.

Background technique

In the past, for example in switch gear, with switch main body be provided with under the situation that the insulator of fixed contact fits together, adopted by so-called and slipped into the structure that fastening structure makes its engaging.

In Fig. 7 and Fig. 8, represented an example of its lock structure.Fig. 7 represents the state before the assembling of switch main body and insulator, the sectional view that (a) expression part is cut open, (b) expression from the arrow X1 direction of (a) see to view; Again, Fig. 8 represents that switch main body closes the sectional view of insulator assembled state.

In Fig. 7, switch main body 1 has accommodation section 2 by synthetic resin ABS resin and forming for example.Around this accommodation section 2, by the integrally formed snap-latch piece 4 that is provided with, this snap-latch piece 4 has the card complex hole 3 of two sides opening.In front end one side of the inner face 4a of this snap-latch piece 4, formed and had the guiding groove section 6 that inserts the inclined-plane that is used to lead.With respect to this, insulator 6 for example, is formed by the PBT harder than ABS resin (polybutylene-terephthalate) resin by synthetic resin, outside, on above-mentioned card complex hole 3 by the integrally formed engaging protuberance 7 that can engage and separate, be used to engage that is provided with.

Therefore, under the situation of assembled switch main body 1 and insulator 6, make insulator 6 near (reference arrow A1) with respect to switch main body 1, Yi Bian engaging protuberance 7 is inserted in the guiding groove section 5, Yi Bian insulator 6 is fitted in the accommodation section 2 of switch main body 1.At this moment, Yi Bian engaging protuberance 7 makes snap-latch piece 4 resiliently deformables, engage (with reference to Fig. 8) with card complex hole 3 Yi Bian on the inner face of this snap-latch piece 4, slide

When above-mentioned switch main body 1 and insulator 6 are fitted together, because producing with snap-latch piece 4, engaging protuberance 7 interferes, the inner face of snap-latch piece 4 is stuck protuberance 7 cuttings, so so-called chimeric burr 8 (representing with double dot dash line) (thing that the smear metal of resin is such) takes place, this chimeric burr 8 disperses to the outside by card complex hole 4.So this chimeric burr 8 is fallen on the operation post, is attached on the miscellaneous part, enters into the inside of the switching mechanism of switch gear, this is the reason that causes the switching mechanism bad connection.

The model utility content

The utility model In view of the foregoing, its purpose is to provide a kind of lock structure, even when making the engaging protuberance be engaged on the card complex hole of snap-latch piece chimeric burr takes place, can prevent that also this engaging burr from dispersing to the outside from card complex hole.

In order to achieve the above object, lock structure of the present utility model is established tool: snap-latch piece and the engaging protuberance that can engage or break away from that is fastened on the above-mentioned card complex hole with card complex hole; By making the one side slide relative of above-mentioned engaging protuberance along above-mentioned snap-latch piece, above-mentioned engaging protuberance is engaged in the above-mentioned card complex hole, it is characterized in that: with the face of the above-mentioned opposition side of above-mentioned snap-latch piece on, be provided with the bridge formation portion that passes across above-mentioned card complex hole.

(model utility effect)

According to the utility model, even when making the engaging protuberance be engaged in the card complex hole of snap-latch piece chimeric burr takes place, this chimeric burr can prevent from card complex hole dispersing to the outside by colliding the bridge formation portion that is set to be horizontally through card complex hole.

Description of drawings

Fig. 1 is an expression embodiment of the present utility model, (a) sectional view of the major component cut open of an expression part, (b) be from the direction of the arrow 2 of (a) see to view.

Fig. 2 is the sectional view of the major component under switch main body and insulator are assembled into one state.

Fig. 3 is the exploded perspective view of switch main body and insulator.

Fig. 4 is the side view of switch gear.

Fig. 5 is the vertical profile side view of switch gear.

Fig. 6 is the figure that is equivalent to Fig. 1 (a) of explanation comparative example.

Fig. 7 be example is described in the past be equivalent to Fig. 1 (a) and figure (b).

Fig. 8 is the figure that is equivalent to Fig. 2.

Among the figure: 12-switch main body, 13-insulator, 16-switching mechanism, 18-the 1st card complex hole (card complex hole), 19-the 1st snap-latch piece (snap-latch piece), 19a-inner face (simultaneously), 19b-outside (face of a relative side), the 22-guiding groove section, 23-bridge formation portion, 25-the 1st engaging protuberance (engaging protuberance)

Embodiment

Below, referring to figs. 1 through Fig. 6 an embodiment of the present utility model is described.

At first, in Fig. 4 and Fig. 5, represented the switch gear 11 that the glass-frame riser in the automobile automatic opening-closing vehicle window is used.This switch gear 11 is by constituting with lower member: switch main body 12, the insulator 13 that is assembled in the bottom of this switch main body 12, top that is installed in switch main body 12 and the operation push-button 15 that can shake by axle 14, be provided in switch main body 12 switch inside mechanisms 16 (with reference to Fig. 5).

Wherein, switch main body 12 is formed by synthetic resin, for example ABS resin, in its underpart, as shown in Figure 3, is formed with the accommodation section 17 of the rectangle framework of following side opening.Front portion (left side among Fig. 3 and Fig. 5) in the surrounding wall portion of this accommodation section 17, be provided with the 1st snap-latch piece 19 (being equivalent to snap-latch piece of the present utility model), this snap-latch piece 19, the 1st card complex hole 18 (being equivalent to card complex hole of the present utility model) with inside and outside two sides opening: again, on the left and right sides at rear portion, be provided with the 2nd snap-latch piece 21 (only representing in Fig. 3 and Fig. 4), the 2nd snap-latch piece 21 has the 2nd card complex hole 20 of inside and outside two sides opening.

And, as Fig. 1 and shown in Figure 2, at front end as the inner face 19a side of the one side of the 1st snap-latch piece 19, be formed with guiding groove section 22 with inclined-plane, again, with the face of the opposite side of its one side, promptly outside on the 19b, integrated setting the bridge formation portion 23 that constitutes by projecting strip part, this bridge formation portion 23 passes across the 1st card complex hole 18 on above-below direction (left and right directions among Fig. 1 and Fig. 2).Again, at the front end of the inner side surface of the 2nd snap-latch piece 21, though diagram not also is provided with guiding groove section.And, on the outside of the 2nd snap-latch piece 21, the bridge formation portion as above-mentioned bridge formation portion 23 is not set.

Above-mentioned insulator 13, by synthetic resin for example the PBT resin constitute, on the anterior 13a on its peripheral part (left side among Fig. 3 and Fig. 5), be provided with the 1st engaging protuberance 25 (being equivalent to engaging protuberance of the present utility model), the 1st engaging protuberance 25 is fastened togather in the mode that can engage disengaging with above-mentioned the 1st card complex hole 18; Again, in left and right sides portion, be provided with the 2nd engaging protuberance 26 (only having shown among Fig. 3 and Fig. 4), it is fastened togather in the mode that can engage disengaging with above-mentioned the 2nd card complex hole 20.Again, a side on the fixed contact configuration portion 27 of insulator 13 is provided with a plurality of fixed contacts 28, in the jack portion 29 of bottom, is provided with a plurality of connecting terminals 30.

Therefore, the assembling of above-mentioned switch main body 12 and insulator 13 is following carries out.Promptly, as Fig. 1 and shown in Figure 3, the opening portion of the accommodation section 17 in switch main body 12, the top that makes insulator 13 is relatively near inserting (with reference to the arrow A 2 of Fig. 1), the 1st engaging protuberance 25 is inserted in the guiding groove section 22 of the 1st snap-latch piece 19, and, Yi Bian be inserted in the guiding groove section that engages protuberance 26 corresponding the 2nd snap-latch pieces 21 with the 2nd, Yi Bian the top of insulator 13 is fitted in the accommodation section 17 of switch main body 12.Follow therewith, the 1st engaging protuberance 25 slides on the inner face 19a of the 1st snap-latch piece 19, make the 1st snap-latch piece 19 that resiliently deformable takes place on one side, be engaged in the 1st card complex hole 18 (with reference to Fig. 2) on one side, and the 2nd engaging protuberance 26 slides on the inner face of pairing the 2nd snap-latch piece 21, make the 2nd snap-latch piece 21 that resiliently deformable takes place on one side, Yi Bian be engaged in the 2nd card complex hole 20.Thus, as Fig. 4 and shown in Figure 5, insulator 13 is assembled on the switch main body 12.

On the fixed contact configuration portion 27 of above-mentioned insulator 13, on the side, be provided with switching mechanism 16.Though this switching mechanism 16 is set to two groups arranged side by side, but only expresses 1 group in Fig. 5, mainly 1 group switching mechanism 16 is described.On fixed contact configuration portion 27 on the side, be provided with the movable contact-key 35 that can shake that relative fixed contact 28 can contact separation, constituted switching mechanism 16 by this movable contact-key 35 and fixed contact 28.In the bottom of aforesaid operations button 15, corresponding with each movable contact-key 35, the outstanding tube portion 36 that is provided with lower aperture; This one 36 is inserted in the accommodation section 17 of switch main body 12.In this one 36, the compression helical spring 38 that contains push rod 37 and this push rod 37 is suppressed downwards, the front end of push rod 37 be docked at corresponding movable contact-key 35 above.

In the above-described configuration, under the non-operating state of operation push-button 15, operation push-button 15 remains on as on Fig. 4 and the equilibrium position shown in Figure 5.In this state, if operation push-button 15 is rotated to being rotated counterclockwise direction, then follow push rod 37 to slide on movable contact-key 35, this movable contact-key 35 is to reversed dip and diverter switch, drives motor not shown in the figures and makes vehicle window decline.And, if remove the steering force that is applied on the operation push-button 15, then follow push rod 37 slip on movable contact-key 35 on one side, one side is returned to recess, and operation push-button 15 turns back to original equilibrium position, simultaneously, movable contact-key 35 is returned to original heeling condition, and the decline of vehicle window stops.

Again, if the operation push-button 15 that makes non-operating state rotates along the dextrorotation veer, then the movable contact-key 35 of adjacent switch mechanism 16 is to reverse inclination and diverter switch drives motor not shown in the figures and makes the vehicle window rising.And if remove the steering force that is applied to operation push-button 15, then operation push-button 15 turns back to original equilibrium position, and simultaneously movable contact-key 35 turns back to original heeling condition, and the rising of window stops.

In above-mentioned example, under the situation in the chimeric accommodation section 17 that is assembled into switch main body 12 with insulator 13, because the 1st engaging protuberance 25 and the 1st snap-latch piece 19 interfere, so, by the 1st engaging protuberance 25, the inner face 19a of the 1st snap-latch piece 19 is cut, and so-called chimeric burr (not shown) takes place.At this moment, on the outside 19b of the 1st snap-latch piece 19, be provided with bridge formation portion 23, this bridge formation portion 23 passes across the 1st card complex hole 18 on above-below direction (left and right directions among Fig. 1 and Fig. 2), so collide in this bridge formation portion 23 by chimeric burr, prevented to disperse to the outside from card complex hole 18.Therefore, prevent to enter in the switching mechanism etc. of miscellaneous part and the contact that causes is bad etc. to the chimeric burr that disperses in the outside.

At this, disperse in order to have prevented chimeric burr faces outwards portion, consider formation as shown in Figure 6 as a comparative example.That is,, the 1st engaging cave 42 of the 1st snap-latch piece 40 in the switch main body 12 is become an opening mode of bottom (top among Fig. 6) quilt obturation by the slide block mode.

But if form such formation, then because the thickness t 1 of the 1st snap-latch piece 40 integral body becomes big, institute then is used to make the load of the 1st snap-latch piece 40 generation resiliently deformables significantly to uprise so that the rigidity of the 1st snap-latch piece 40 uprises.Again, in order to reduce this load, if the thickness t 1 of the 1st snap-latch piece 40 is diminished, then the degree of depth in the 1st engaging cave 41 shoals, and the size of the engaging size of the 1st engaging protuberance 25 is diminished, and can't satisfy the intensity that comes off.

For this point, according to above-mentioned present embodiment, the rigidity of the 1st snap-latch piece 19 is uprised though be provided with bridge formation portion 23, only be a part, load increases slightly when chimeric so can limit.Because the 1st card complex hole 18 is the shape of two sides opening,, satisfy the intensity that comes off so can guarantee and the engaging size of the 1st engaging protuberance 25 again.

Again, in the above-described embodiments,, bridge formation portion is not set, but fully bridge formation portion 23 can be set yet in the outside of the 2nd snap-latch piece 21 having on the 2nd snap-latch piece 21 of the 2nd card complex hole 20.

The utility model is not limited in the above embodiments, also can be widely used in for example switch gear structure in addition, that two parts are fastened.

Claims

1. a lock structure is provided with: snap-latch piece and the engaging protuberance that can engage or break away from that is fastened on the above-mentioned card complex hole with card complex hole; By making the one side slide relative of above-mentioned engaging protuberance along above-mentioned snap-latch piece, above-mentioned engaging protuberance is engaged in the above-mentioned card complex hole, it is characterized in that:

With the face of the above-mentioned opposition side of above-mentioned snap-latch piece on, be provided with the bridge formation portion that passes across above-mentioned card complex hole.