JPH051126U - Push button switch - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a thin horizontal push-type push button switch. [Structure] The operation member 19 is integrally provided with a contact point pressing portion 27, a cutout portion 31 is formed, and a bent portion 35 of a holding plate 33 is positioned inside the cutout portion 31.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to various types of push button switches used for consumer equipment such as car stereos and 8 mm video, and more particularly to a thin sideways push type push button switch.

[0002]

[Prior Art]

 In recent years, as electronic devices have become lighter, thinner, shorter, and smaller, there has been a demand for smaller and thinner switches themselves. As such a conventional push button switch, the one disclosed in Japanese Utility Model Laid-Open No. 1-166935 is known. FIG. 5 shows this conventional push button switch, in which the fixed contacts 2 and 3 are provided on the inner bottom surface of the housing 1, and the movable contact point 4 capable of reversing the curvature is provided on the fixed contacts 2 and 3. The movable contact 4 is mounted on the fixed contact 3. The rotating member 5 is disposed above the movable contact 4, and the movable contact 4 provided in the rotating member 5 has a center portion of the movable contact 4 in an initial state in which the pressing protrusion 6 for pressing the movable contact 4 does not operate the stem 7. A pressing plate 8 is provided on the upper surface of the housing so as to come into contact with the above-mentioned parts to prevent the above members from being pulled out upward. In the above structure, when the stem 7 is pressed, the upper portion 9 of the rotating member 5 is pressed, whereby the pressing protrusion 6 rotates downward with the support shaft 10 as a fulcrum. Therefore, the movable contact 4 comes into contact with the fixed contact 2 and the switch is turned on. When the pressure on the stem 7 is released, the rotary pressing force applied to the rotary member 5 is released, and the movable contact 4 and the stem 7 are returned to their original states by the spring force of the movable contact 4 itself. The switch is turned off.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional push button switch, the rotating member 5 is arranged between the movable contact 4 and the stem 7, and the flat portion 11 of the stem 7 is arranged above the rotating member 5. Since the switch itself is located, the thickness of the rotating member 5 and the flat portion 11 of the stem is added to the height of the switch itself, and although the horizontal push-type push button switch structure is adopted, it is necessary to sufficiently perform the thin function. There was a problem that I could not do it. Therefore, the present invention has been made in order to solve the above-mentioned conventional technical problems, and an object thereof is to obtain a thin lateral push type push button switch.

[0004]

[Means for Solving the Problems]

 A lower housing having a fixed contact, a movable contact arranged on the fixed contact and a lower housing, the operation guide being integrally formed with the operation portion and slidably arranged on the lower housing; The operating member is composed of an elastic contact point pressing portion and an operating member having a cutout portion formed in the operation guide portion.The pressing plate has a folding member located in the cutout portion of the operating member. It is configured to have a curved portion and a plurality of mounting portions mounted on the lower housing.

[0005]

[Action]

 Therefore, in the push button switch of the present invention, the contact pressing portion is formed integrally with the operating member, and the bent portion of the holding plate is positioned in the notch provided in the operating member. The size can be suppressed. Further, since the operation member is composed of one component, the push button switch can be obtained with a relatively simple structure.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an exploded perspective view of a push button switch, FIG. 2 is a cross-sectional view of a main part of the push button switch assembled, and FIG. 3 is a perspective view of the push button switch assembled.

In the figure, reference numeral 11 denotes a housing, and fixed contacts 12 and 13 are formed on the housing 11 by insert molding. A plurality of terminals 14 extending from the fixed contact are provided on a side wall of the housing 11. , 15 are provided, and the side walls of the case where the terminals 14, 15 are not provided are provided with engaging portions 16, 17 for attaching the holding plate. A reversible movable contact 18 is mounted on the pair of fixed contacts 12. The housing 11 has a side wall provided with an operation portion contact portion 20 that functions as a stopper when the operation member 19 is pressed, and a guide wall 21 with which the end portion of the operation member abuts is provided on the upper surface. Further, four guide projections 23 for holding the operation guide portion 22 of the operation member 19 and further a plurality of pressing plate guide projections 24 are provided on the upper surface of the housing 11. Further, 25 is a dustproof sheet made of a material such as polyamide, and the sheet 25 is configured so that its periphery is placed on the upper surface 26 of the housing 11. An operating member 19 is placed on the sheet 25. The operating member 19 has an operating portion 27, and the operating portion 27 has a contact point pressing portion 29 having a thin portion 28 at its base, An operation guide portion 22 having a horizontally long protrusion 30 is provided, and a cutout portion 31 is formed around the contact pressing portion 29.

A pressing plate 33 for preventing the upward movement of the operating member 19 is mounted on the operating member 19. The pressing plate 33 has a pair of notches 34 formed on the upper surface thereof. Between the notches 34, bent portions 35 bent downward in a V shape are provided. A pair of substantially U-shaped mounting pieces 36 extending downward from one side wall of the holding plate 33 are provided. The recesses 37 of the mounting pieces 36 are provided in the engaging portions 16, 17 of the lower housing 11. It is installed so that it is located. Further, as shown in FIG. 4, a substantially I-shaped mounting piece 42 bent downward is provided from the side surface of the pressing plate 33 facing the mounting piece 36. It is attached by fitting a pair of protrusions 38 provided on the side wall of the lower housing 11. Further, the other side wall of the holding plate 33 is provided with a first protrusion 39 and a second protrusion 40 protruding downward, respectively. The first protrusion 39 serves as a guide for the housing 11. It is arranged on the protrusions 23, and the second protrusions 40 are arranged so as to be located between the guide protrusions 23. The guide projections 24 are located in the notches 41 provided at the four corners of the holding plate 33.

When the push button switch having the above structure is assembled, the movable contact 18 is placed on the fixed contact 12 of the lower housing 11, and the seat 25 is placed on the upper surface 43 of the housing 11 so as to cover the movable contact 18. Attach in the form of pasting. Then, the operating member 19 is positioned on the seat 25, the lower ends of the mounting pieces 36, 36 of the holding plate 33 are inclined parts of the engaging parts 16, 17, and the lower end of the mounting piece 42 is of the housing 11. By mounting the first and second protrusions 39, 40 on the inclined surface 44 provided on the guide wall 21 and on the housing 11 located between the guide protrusions 23 and the guide protrusions 23, mounting The concave portion 37 of the piece 36 can be attached to the projections 16 and 17, and the lower portion of the attachment piece 42 can be attached to the lower surface of the projection 38 with a slight fitting force. Further, with the above structure, the pressing plate 33 can be securely attached to the housing 11 without rattling. Further, below the protrusions 16 and 17, the housing 11 is inclined toward the housing 11 side, and the inclined portion can collect the flux generated during soldering. In this state, when the operation member 19 is pressed in the initial state where the contact point pressing portion 29 of the operation member 19 is in contact with the bending portion 35, the contact pressing portion 29 moves on the inclined surface of the bending portion 35, The bent portion 35 of the pressing plate 33 is located inside the cutout portion 31 of the operation member 19. Further, the projection 30 smoothly slides on the lower housing 43 via the sheet 25, the movable contact 18 comes into contact with the fixed contact 12 via the dustproof sheet 21, and the switch is turned on. Then, when the pressing of the operating member 19 is released, the contact pressing portion 29 is pressed by the spring force of the movable contact 18, the contact pressing portion 29 is slid back to the bent portion 35, and returns to the original state. .. In the above embodiment, the protrusions 30 are formed in a horizontally long shape, and four protrusions 30 are formed in the upper and lower portions of the operation guide portion 23. However, this is an example and the number of shapes may be different.

[0010]

As described above, in the push button switch of the present invention, the contact pressing portion is formed integrally with the operating member, and the bent portion of the holding plate is positioned in the notch provided in the operating member. Therefore, a thin push button switch can be obtained. Further, since the operating member is composed of one part, the number of parts is reduced and a low cost push button switch can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a push button switch of the present invention.

FIG. 2 is a sectional view of the main part of the push button switch of the present invention.

FIG. 3 is a cross-sectional view of the essential parts of the push button switch of the present invention assembled.

FIG. 4 is a side view of the push button switch of the present invention.

FIG. 5 is a cross-sectional view of essential parts showing a conventional push button switch.

[Explanation of symbols]

 11 Lower Housing 12, 13 Fixed Contact 18 Movable Contact 19 Operating Member 22 Operation Guide Part 27 Operating Part 29 Contact Pressing Part 31 Notch Part 33 Holding Plate 36, 42 Mounting Part

Claims (1)

[Claims for utility model registration] [Claim 1] A lower housing having fixed contacts,
The movable contact disposed on the fixed contact and the operation guide located on the lower housing and integrally formed with the operation part, and configured to be slidable on the lower housing, and the operation guide part formed on the operation part are elastic. A pressing member having a contact pressing portion and a cutout portion formed in the operation guide portion, and this holding plate is attached to the lower housing and a bent portion located in the cutout portion of the operation member. A push-button switch having a plurality of mounting portions.