JP2005340061A - Slide switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide switch having enough hardness of a slider even if the slider is made as thin as possible and utilizing a storing space of the slider in a housing effectively. <P>SOLUTION: In the slide switch storing a slider with a contact movable piece in a storage recessed part of the housing and covering it for switching from a stationary contact to another one, the slider is in an approximate ± shape, recessed parts are cut off from a right side and a left side between an elastic arm at an end part and a slide arm in the middle, a base part of the contact movable piece is integrally embedded at the time of molding the slider with synthetic resin, a contact point of the contact movable piece is protruded from a side wall forming the recessed part of the slider and engaging protruding parts provided at both end parts of the elastic arm are pressed to and contacted with inside of a rear panel part of the housing and the slide arm is slidably fitted by closely contacting with inside of a front panel part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultra-small slide switch that is used in a mobile phone and other small electronic devices and has a thin overall shape while maintaining mechanical strength.

Slide switches mounted on recent small electric devices are equipped with ultra-small slide switches having a width of 7 mm, a depth of 3 mm, a thickness of 2 mm, and the like.
Conventional slide switches of this type include those shown in FIGS.
In these drawings, the slide switch includes a housing 10 whose upper surface is opened, a slider 12 and a cover 11. A first fixed contact 16 is provided at the center of the bottom 15 of the housing 10, and a second fixed contact 17 and a third fixed contact 18 are provided on both sides of the first fixed contact 16. The slider 12 slides inside the housing recess 13 of the housing 10, and an attachment groove 36 facing the slide direction is formed on the lower surface, and front and rear of the attachment groove 36 are slide leg portions 37. The contact movable piece 19 is attached to the attachment groove 36 by a dowel 20, and the contacts 24 a and 24 b at both ends of the contact movable piece 19 are the first fixed contact 16, the second fixed contact 17, and the third fixed contact 18. Connect and separate. The housing 10 is covered with a cover 11 that holds the slider 12, and the engagement protrusion 23 of the cover 11 engages with any of the engagement recesses 22a, 22b, and 22c of the slider 12 to obtain a click feeling. Is positioned.

  In such a configuration, when the operation knob 21 protruding from the window portion 14 of the housing 10 is operated and the slider 12 is slid in the left direction in FIG. 5, the contact 24 a of the contact movable piece 19 becomes the second fixed contact 17. The contact 24 b is connected to the first fixed contact 16. At this time, the engagement protrusion 23 of the cover 11 engages with the engagement recess 22c to obtain a click feeling, and the position is stably held. The same applies when the slider 12 is slid rightward in FIG.

5 and 6, the movable contact piece 19 is not directly attached to the attachment groove 36 on the lower surface of the slider 12, but the movable contact piece 19 is attached to a contact piece holding portion which is a separate member from the slider 12. In some cases, the contact piece holding portion is fitted to the slider 12 (Patent Document 1).
JP-A-5-190056

  The thing shown in the said FIG.5 and FIG.6 and the thing shown in patent document 1 had the problem that all had a limit in thickness reduction. That is, it is conceivable to make the slider 12 as thin as possible in order to reduce the thickness. However, if the slider 12 is made thinner than necessary, the mechanical strength for holding the contact movable piece 19 cannot be obtained. Further, in the structure in which the slider 12 and the movable contact piece 19 are stacked in two steps, even if the thickness of the slider 12 can be reduced, the movable contact piece 19 needs to be curved in order to have a spring property. The height of the movable contact piece 19 itself is increased, and the overall thickness cannot be reduced. Further, when the engagement recess 22 is formed on the upper surface of the slider 12 and pressed by the engagement protrusion 23, both ends of the slider 12 that has been thinned are warped, and the mounting position of the contact movable piece 19 with respect to the slider 12 is displaced. In addition, terminal portions such as the first fixed contact 16, the second fixed contact 17, and the third fixed contact 18 are lifted from the printed wiring board, and soldering is insufficient.

  The present invention embeds the movable contact piece 19 in the slider 12 and protrudes the movable contact piece 19 from the side wall 38 so that the slider 12 can have the strength even when the slider 12 is made as thin as possible. The engaging means for stable positioning is configured to have elasticity in the width direction, not in the thickness direction of the slider 12.

  According to the first aspect of the present invention, since the contact point of the movable contact piece is provided so as to protrude from the side surface of the slider, the slider and the movable contact piece do not have a double structure. The thickness can be reduced to a fraction of the thickness (for example, several hundred microns). That is, a space for storing the movable contact piece is not required for the slider as in the conventional product, and the storage recess area of the housing can be used effectively.

  According to the second aspect of the present invention, a thin slide switch with high strength can be obtained by embedding the base portion of the movable contact piece integrally when molding the slider with synthetic resin. Further, there is no need to crimp and fix the contact movable piece to the slider as in the prior art, and the assembly man-hour can be reduced. Furthermore, the number of parts can be reduced as compared with a conventional product in which the contact movable piece is attached to a contact piece holding portion which is a separate member from the slider, and the contact piece holding portion is fitted to the slider.

  According to the third aspect of the present invention, the slider has a substantially earth-shaped shape, and a recess is cut left and right between the elastic arm at one end and the intermediate slide arm, and the operation knob protrudes from the slide arm. The base of the movable contact piece is embedded integrally when molding the slider with synthetic resin, and the contact of the movable contact piece protrudes from the side wall that forms the recess of the slider. Since it is bent downward so as to protrude slightly downward, it can be placed in the same plane as the sliding arm and elastic arm where the contact of the movable contact piece slides, and the thickness of the slider is made as thin as possible Can be reduced to a fraction of the conventional level. In addition, by obtaining a spring property by the elastic arm at one end of the slider, the width of the elastic arm swinging can be made smaller than in the case of using a leaf spring as in the past or a spring formed by a cover. be able to. Furthermore, the slide arm not only smoothly slides, but also prevents the slider from coming off and protects the movable contact piece.

  According to the fourth aspect of the present invention, the slide arm is brought into close contact with the inner side of the front plate part while pressing the engaging protrusions provided at both ends of the elastic arm against the inner side of the rear plate part of the housing. Thus, the elastic arm and the slide arm are in contact with the inner side of the rear plate portion and the side plate portion of the housing and slide while receiving a load in the width direction. Therefore, the slider does not warp or adversely affect other functions.

  According to the invention of claim 5, one engagement protrusion provided at both ends of the elastic arm is pressed against one engagement recess inside the rear plate portion of the housing, and the other engagement protrusion is The slide arm is slidably fitted in close contact with the inside of the front plate while pressing against the other inclined projection on the inside of the rear plate of the housing. Since it protrudes, a click feeling and a sense of stability are obtained in the width direction of the slider, and the slider does not warp or adversely affect other functions. Further, the gap generated by projecting the operation knob from the sliding window is hidden by the slide arm without using other components.

  The present invention provides a slide switch in which a slider with a movable contact piece is housed in a housing recess that is open on the upper surface, covered with a cover, and a fixed contact is switched and connected by sliding the movable contact piece. The front plate portion of the housing is formed with a window portion, and the rear plate portion is formed with an engagement concave portion at both inner corners and an inclined protrusion slightly inside the engagement concave portion, It has an almost earth-shaped shape, and a recess is cut out on the left and right between the elastic arm at one end and the intermediate slide arm, and the operation knob protrudes from the slide arm. The base of the piece is embedded integrally, and the contact of the movable contact piece protrudes from the side wall forming the recess of the slider, and the tip of the contact is slightly below the lower surface of the movable contact piece. Bending downward so as to protrude, one engagement protrusion provided at both ends of the elastic arm is pressed against one engagement recess inside the rear plate of the housing, and the other engagement protrusion is The slide arm is slidably fitted so as to be in close contact with the inside of the front plate while being pressed against the other inclined projection on the inside of the rear plate of the housing. It is a slide switch characterized by protruding from.

1 to 4, the slide switch of the present invention includes a housing 10, a first fixed contact 16, a second fixed contact 17, a third fixed contact 18, a slider 12, a movable contact piece 19, and a cover 11. Is done.
The housing 10 is molded from a synthetic resin, and has a size of, for example, a width of 7.0 mm, a depth of 3.0 mm, and a thickness of 0.7 mm. The housing 10 is formed with a housing recess 13 surrounded by a front plate portion 33, a rear plate portion 35, and side plate portions 34 on both sides and having an upper surface opened. A window portion 14 is formed in the front plate portion 33. The rear plate portion 35 is formed with engaging recesses 40a and 40b at both inner corners, and inclined protrusions 30a and 30b slightly inside the engaging recesses 40a and 40b, and with a fitting notch on the outer side. 26 is formed. A total of four locking notches 25 are formed outside the side plate portions 34 on both sides below the corners.

  The bottom portion 15 of the housing 10 has an upper surface exposed so as to be flush with the bottom portion 15, and a first fixed contact 16 at the center and a second fixed contact 17 and a third fixed contact 18 on both sides are mutually connected. The housing 10 is integrally provided with a slight interval when the housing 10 is molded. The two terminal portions 16 a and 16 b of the first fixed contact 16 protrude to the outside of the rear plate portion 35, and the two terminal portions 17 a and 17 b of the second fixed contact 17 are formed on one side plate portion 34. The two terminal portions 18 a and 18 b of the third fixed contact 18 protrude to the outside of the other side plate portion 34 and the outside of the rear plate portion 35.

  The slider 12 has a thickness of 0.4 mm, for example, and has a substantially earthen shape when viewed from above. That is, the horizontal bar portion at one end is an elastic arm 28, and a recess 29 is cut out on the left and right between the elastic arm 28 and the intermediate slide arm 27, and a portion protruding from the slide arm 27. Forms an operation knob 21. Engaging protrusions 23a and 23b that protrude slightly in the width direction are integrally provided at both ends of the elastic arm 28.

The contact movable piece 19 includes a base 39 and contact points 24a and 24b extending from the base 39 to the left and right in a cross shape and divided into two. The contact movable piece 19 is embedded with a base 39 integrally when the slider 12 is molded. Further, the left and right contacts 24 a and 24 b of the movable contact piece 19 protrude from the side wall 38 so as to face the recess 29, and bend downward so as to protrude slightly below the lower surface of the movable contact piece 19. Yes.
The slider 12 with the movable contact piece 19 is fitted into the housing recess 13 of the housing 10 from above. At this time, the both sides of the elastic arm 28 are in the dotted line state shown in FIG. 2 so that the slide arm 27 is brought into close contact with the inner side of the front plate portion 33 while being pressed against the inner side of the rear plate portion 35. Fit. Then, the operation knob 21 protrudes from the window portion 14, the engagement protrusion 23a engages with the engagement recess 40a, the contact 24a contacts the second fixed contact 17, and the contact 24b becomes the first fixed contact. 16 is contacted.

  The cover 11 is made of, for example, a metal plate such as stainless steel having a thickness of about 0.1 mm, and the reinforcing piece 31 bent downward in the depth portion is fitted into the fitting notch 26 of the housing 10. The left and right side plate portions are bent downward by the thickness of the housing 10, and after covering the housing 10 from above, the locking piece portions 32 provided at both front and rear end portions are the locking cuts. It is bent and locked so as to bite into the notch 25.

In the configuration as described above, when the operation knob 21 is slid rightward from the state of FIG. 2 along the window portion 14, the engagement protrusion 23 a engaged with the engagement recess 40 a becomes elastic. In contrast, the engaging protrusion 23b climbs over the inclined protrusion 30b against the elasticity of the elastic arm 28 and engages with the engaging recess 40b, and a click feeling is obtained. Stop in steady state. As a result, the contact 24a is switched from the second fixed contact 17 to the first fixed contact 16, and the contact 24b is switched from the first fixed contact 16 to the third fixed contact 18.
When the operation knob 21 is slid leftward from this state, the original state shown in FIG. 2 is restored.

FIG. 3 is a longitudinal sectional view taken along the line BB in FIG. 2 showing an embodiment of the slide switch according to the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. It is the CC sectional view taken on the line in FIG. It is a disassembled perspective view which shows one Example of the slide switch by this invention. It is the EE sectional view taken on the line in FIG. 6 which shows the conventional slide switch. It is the DD sectional view taken on the line in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Housing, 11 ... Cover, 12 ... Slider, 13 ... Storage recessed part, 14 ... Window part, 15 ... Bottom part, 16 ... 1st fixed contact, 17 ... 2nd fixed contact, 18 ... 3rd fixed contact, DESCRIPTION OF SYMBOLS 19 ... Contact movable piece, 20 ... Dowel, 21 ... Operation knob, 22 ... Engagement recessed part, 23 ... Engagement protrusion, 24a, 24b ... Contact, 25 ... Locking notch, 26 ... Fitting notch, 27 ... Slide arm, 28 ... Elastic arm, 29 ... Recess, 30 ... Inclined protrusion, 31 ... Reinforcing piece, 32 ... Locking piece, 33 ... Front plate, 34 ... Side plate, 35 ... Rear plate, 36 ... mounting groove, 37 ... sliding leg, 38 ... side wall, 39 ... base, 40a, 40b ... engagement recess.

Claims (5)

  In the slide switch in which a slider with a movable contact piece is housed in a housing recess opened on the upper surface and covered with a cover, the fixed movable contact is switched and connected by sliding the movable contact piece. The slide switch is provided so that a contact point of the slider protrudes from a side surface of the slider.   In a slide switch in which a slider with a movable contact piece is accommodated in a housing recess opened on the upper surface and covered with a cover, the fixed contact is switched and connected by sliding the movable contact piece. A slide switch in which a base portion of the contact movable piece is integrally embedded at the time of molding with resin, and a contact point of the contact movable piece protrudes from a side surface of the slider.   In a slide switch in which a slider with a movable contact piece is housed in a housing recess opened on the upper surface and covered with a cover, the fixed contact is switched and connected by sliding the movable contact piece. It has a substantially earth-shaped shape, with a recess cut out on the left and right between an elastic arm at one end and an intermediate slide arm, and an operation knob protruding from the slide arm. The contact portion of the contact movable piece protrudes from the side wall that forms the recess of the slider, and the tip end portion of the contact point downwards so as to protrude slightly below the lower surface of the contact movable piece. A slide switch characterized by bending in   In a slide switch in which a slider with a movable contact piece is housed in a housing recess opened on the upper surface and covered with a cover, the fixed contact is switched and connected by sliding the movable contact piece. It has an almost earth-shaped shape, and a recess is cut out on the left and right between the elastic arm at one end and the intermediate slide arm, and the operation knob protrudes from the slide arm. The base of the piece is embedded in one piece, and the contact of the contact movable piece is projected from the side wall that forms the recess of the slider, and the tip of the contact protrudes slightly below the lower surface of the contact movable piece. Bending downward and sliding while pressing the engagement protrusions provided at both ends of the elastic arm against the inside of the rear plate of the housing Slide switch, characterized in that fitted slidably in close contact with over beam inside the front plate portion.   In a slide switch in which a slider with a movable contact piece is accommodated in a housing recess opened on the upper surface and covered with a cover, the fixed contact is switched and connected by sliding the movable contact piece. The plate portion is formed with a window portion, and the rear plate portion is formed with an engagement concave portion at both inner corners and an inclined protrusion portion slightly inside the engagement concave portion, and the slider is substantially earth-shaped. A recess is cut out on the left and right between the elastic arm at one end and the intermediate slide arm, and the operation knob protrudes from the slide arm, and the base of the movable contact piece is formed when molding the slider with synthetic resin. The contact movable piece is protruded from the side wall that forms the recess of the slider, and the tip of the contact protrudes slightly below the lower surface of the contact movable piece. One engagement protrusion provided at both ends of the elastic arm is pressed against one engagement recess inside the rear plate of the housing, and the other engagement protrusion is The slide arm is slidably fitted so as to be in close contact with the inside of the front plate while pressing against the inside of the other inclined projection on the inside of the plate so that the operation knob protrudes from the window. A slide switch characterized by that.

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