WO1996030920A1 - Commutateur a pression - Google Patents

Commutateur a pression Download PDF

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Publication number
WO1996030920A1
WO1996030920A1 PCT/JP1996/000832 JP9600832W WO9630920A1 WO 1996030920 A1 WO1996030920 A1 WO 1996030920A1 JP 9600832 W JP9600832 W JP 9600832W WO 9630920 A1 WO9630920 A1 WO 9630920A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
flange
outer periphery
driving body
switch
Prior art date
Application number
PCT/JP1996/000832
Other languages
English (en)
Japanese (ja)
Inventor
Yasunori Yanai
Hisashi Watanabe
Shouzi Takeda
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO1996030920A1 publication Critical patent/WO1996030920A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings

Definitions

  • the present invention relates to a push-on switch of a dust-proof type used for operation buttons of electronic devices.
  • FIG. 10 A conventional dustproof bushion switch will be described with reference to FIGS. 10 and 11.
  • FIG. 10 A conventional dustproof bushion switch will be described with reference to FIGS. 10 and 11.
  • reference numeral 1 denotes a box-shaped case made of molded resin, on the bottom surface of which is electrically connected to the external fixed contacts 3A, 3B and the connection terminal 4 which are electrically connected to the connection terminal 2.
  • the fixed center contact 5 is fixed by insert molding, and the outer peripheral lower end of the diaphragm-shaped movable contact 6 made of an elastic metal thin plate is placed on the outer fixed contacts 3A and 3B. It is listed.
  • an elastic rubber force which is an upper convex portion 7 A which is pressed during operation, and an upper end surface 1 of case 1.
  • An intermediate flange portion that covers A, a large-diameter portion with B 7C, and a driving body 7 composed of a lower convex portion 7D in contact with the central apex portion of the movable contact 6 described above.
  • a plate 8 having a central hole 8A that passes through the upper convex portion 7A from above and is overlapped with the flange portion 7B of the driver 7 interposed therebetween.
  • the dowel 9 at the 1A corner of the upper end surface of the case 1 is fixed by being pressed and tightened.
  • the inside of the case 1 accommodating the switch contact portion is sealed with the flange portion 7B of the driving body 7 to form a dustproof structure.
  • the conventional bush-on switch configured as described above is 1 2 As shown in Fig. 1, it is used by attaching it to a printed circuit board 10 of an electronic device by attaching it to a solder, and its operation is described below in Fig. 12. This is explained in detail below.
  • the force for caulking the dowel 9 on the upper end 1A of the case 1 is insufficient, and the flange 7B of the driver 7 is covered with the upper end 1A of the case 1.
  • the operation button 11 is pressed with a high load, for example, when the force sandwiched between the plate 8 and the plate 8 is weak, the flange 7B is moved downward from the center. Then, as shown in Fig. 12, the center 7F of the square side is drawn into the inside of case 1 and deformed, as shown in Fig. 12. There was also a problem that it would not work.
  • the present invention has been made to solve such a conventional problem, and has as its object to provide a bush-on switch of a dustproof type having stable performance. That is.
  • the bush switch of the dustproof type uses a rubber material having elasticity which is a material of a driving body. At the same time, increase the width of the flange, and attach a thin, thin and easy-to-elongate part to the flange in the form of a ring.
  • the thickness of the outer peripheral part of the flange is made thicker, and a stopper whose inner circumference is larger than the outer diameter of the case can be installed. .
  • FIG. 1 is a cross-sectional view of a bush-on switch according to an embodiment of the present invention.
  • Fig. 2 (a) is an explanatory view of a method for measuring the relationship between the typical dimensions and the hardness and the amount of deflection of the driving body, which is the main part, and Fig. 2 (b) is the same figure.
  • Fig. 3 (a) is a top perspective view showing an embodiment of the driving body, which is the main part, and Fig. 3 (b) is a bottom perspective view of the same.
  • Fig. 4 (a) is a top perspective view showing another embodiment of the driving body which is the main part, Fig. 4 (b) is a bottom perspective view of the same, and
  • Fig. 5 is the bushing operation of the embodiment.
  • FIG. 1 is a cross-sectional view of a bush-on switch according to an embodiment of the present invention.
  • Fig. 2 (a) is an explanatory view of a method for measuring the relationship between the typical dimensions and
  • FIG. 6 is a cross-sectional view of a pump and a no-switch according to a second embodiment of the present invention
  • FIG. 8 (b) shows a bottom perspective view showing another embodiment
  • FIG. 8 shows a down state of the embodiment during push operation.
  • Cross section, Fig. 9 (a) A sectional view showing a third embodiment of the driving body, which is the main part
  • FIG. 10B is a sectional view showing the fourth embodiment
  • FIG. 10 is a conventional bushing.
  • FIG. 11 is a cross-sectional view of the switch
  • FIG. 11 is an exploded perspective view of the same
  • FIG. 12 is a cross-sectional view showing a state at the time of operating the push switch.
  • FIG. 1 is a cross-sectional view of a bush-on switch according to the present invention
  • FIG. 2 (a) is a diagram showing typical dimensions and hardness of a driving body which is the main part.
  • Fig. 3 (b) is a diagram showing the measurement results of the same hardness and deflection amount
  • Fig. 3 (a) is an implementation of the driving element which is the main part.
  • Fig. 4 (a) is an upper perspective view
  • Fig. 4 (a) is a main perspective view
  • Fig. 4 (a) is an essential perspective view.
  • FIG. 9 is a top perspective view showing another embodiment of the driving body
  • FIG. 9 is a perspective view showing the bottom surface of the same
  • FIG. 5 is a cross-sectional view showing a state of the embodiment during a bush operation.
  • the feature of the present embodiment is that the driving body 7 in the above-mentioned conventional configuration is configured such that the upper convex portion 12A for pressing and the case 1 are opened.
  • a wide flange portion covering the mouth 1 2 B Large diameter portion with B 1 2 C and a drive consisting of a lower convex portion 12 D in contact with the central vertex of the movable contact 6
  • the rubber material was made to have a type A durometer hardness of 65 to 70 as specified in j IS-K-6253. .
  • the hardness specified by the JIS is simply referred to as "due meter hardness”.
  • Fig. 2 (a) shows the type of pusho shown in Fig. 2 (a) regarding the inspection of the amount of deflection of the rubber material that composes the driving body when a load is applied.
  • the results of an experiment conducted on a typical driving body of a switch are shown in Fig. 2 (characteristics of Fig. 2).
  • a conventionally used durometer hardness of 50 can be changed to a durometer hardness of 65 to 70.
  • the resulting deflection is about 1 Z 2.
  • the flange portion 12B has a wider width than before by reducing the outer diameter of the large diameter portion 12C. As shown in FIG. 1 and FIG. 3, the large-diameter portion 12C is located inside the pinched portion 12E between the upper end surface 1A of the case 1 and the cover plate 8. The outside has a ring-shaped thin portion 12F.
  • the ring-shaped thin portion 12 F is formed by the upper convex portion when the switch is operated.
  • the center of the driving body 12 moves downward by pressing 12 A, it is provided as a part that deforms earlier than the above-mentioned pinching part 12 E.
  • the thinner the thickness the easier it will be to deform, but it will cause the thickness to fluctuate when processing the rubber material and to be pulled by the switch during the switch operation.
  • the thickness of the sandwiched portion 12E is about 1 to 2 so that the actual dimensions are 0.25 to 0.30. It was made to be a syllabary.
  • the width of the ring-shaped thin portion 12F is such that the amount of deflection with respect to the load has been reduced to about 1/2 due to the change in the hardness of the rubber material described above. In consideration of this, it is twice as large as the reversing operation stroke (approximately 0.25 ram) of the diaphragm movable contact 6 which is the switch operation stroke. As a result, good results were obtained.
  • the thinned portion 12F of the ring has a flange portion 1F.
  • it may be installed on either the upper or lower surface of 2B.
  • FIG. 6 is a cross-sectional view of another bush-on switch according to the present invention
  • FIG. 7 (a) is a bottom perspective view of a driving body which is the main part
  • FIG. 8 is a cross-sectional view showing a state of the embodiment when a push operation is performed
  • FIG. 9 (a) is a perspective view of a third embodiment of a driving body which is a main part of the embodiment.
  • FIG. 13B is a cross-sectional view showing the fourth embodiment.
  • the feature of this embodiment is that the flange portion 12 B of the driving body 12 of the first embodiment described above and the ring-shaped thin portion 12 B of the driving body 12 B
  • a thicker collar 1G is provided on the outside of the F and outer sandwiching portion 1 2E, and the flange 1G is provided.
  • G has a structure formed partially on the outer periphery of the flange portion 12B as shown in FIG. 7 (a), or has a structure as shown in FIG. 7 ().
  • the structure is formed on the entire outer periphery of the flange portion 12B.
  • the operation of the bush-on switch configured as described above will be described. As shown in FIG. 8, the drive is activated when the switch is operated.
  • the outer peripheral portion of the flange portion 12 B of the driving body 12 is connected to the outer peripheral portion of the case 1, the inner peripheral portion of which is in contact with the outer peripheral portion of the case 1.
  • G is provided, but as shown in Fig. 9 (a>), the inner periphery of the flange 12B contacts the outer periphery of the cover 8 with the inner periphery of the flange 12B.
  • the stopper plate 12I may be provided in contact with each outer peripheral portion of the plate 8.
  • the rubber material which is the driving material of the bush-on switch, is made to have an appropriate hardness, and the flange of the driving device is formed.
  • a thin part is provided in the part, and a thick part is further provided on the outer periphery of the flange part, the inner part of which is in contact with the outer part of the case. It is configured so that
  • the operation buttons of the equipment used can be changed.
  • the tip diameter of the tongue ⁇ The driving body is not deformed by the reversing operation load of the movable contact, and the operation stroke of the switch is not shorted. Even if the force to press the flange part of the case into the case is weakened, the outer periphery of the flange part should be bowed into the case when the switch is operated. It is possible to provide a bush-on switch of a dust-proof type having a stable performance so that the function as a switch is not impaired by being incorporated into the switch. It is something that can be done.

Abstract

Commutateur à pression protégé contre la poussière, destiné à la mise en marche d'un appareil électronique et fonctionnant de manière stable quelles que soient les conditions de fonctionnement. Un matériau en caoutchouc dur présentant une dureté, mesurée au duromètre de type A, de 65 à 70 telle que spécifiée dans la norme JIS-K-6253, est utilisé pour l'élément de commande (12). La largeur de la partie formant l'épaulement (12B) servant à obturer le boîtier (1) est développée, une partie annulaire mince (12F) susceptible d'une contraction aisée étant disposée à cet endroit. Par ailleurs, une partie épaisse d'immobilisation (12G), dont la périphérie interne vient au contact de la périphérie externe du boîtier (1), est disposée autour de la périphérie externe de la partie formant épaulement (12B) afin de s'opposer à la déformation de l'élément de commande en caoutchouc (12), de sorte qu'une poussée suffisante du commutateur puisse être entretenue. Cet élément de blocage a également pour fonction d'empêcher que la partie formant épaulement (12B) et destinée à obturer le boîtier, ne se retire de ce dernier.
PCT/JP1996/000832 1995-03-30 1996-03-28 Commutateur a pression WO1996030920A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7338395 1995-03-30
JP7/73383 1995-03-30
JP7/149840 1995-06-16
JP14984095 1995-06-16

Publications (1)

Publication Number Publication Date
WO1996030920A1 true WO1996030920A1 (fr) 1996-10-03

Family

ID=26414532

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1996/000832 WO1996030920A1 (fr) 1995-03-30 1996-03-28 Commutateur a pression

Country Status (1)

Country Link
WO (1) WO1996030920A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621146Y2 (ja) * 1988-05-16 1994-06-01 エスエムケイ株式会社 メタルタクトスイッチ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621146Y2 (ja) * 1988-05-16 1994-06-01 エスエムケイ株式会社 メタルタクトスイッチ

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 147338/1986, (Laid-Open No. 54217/1988), (MATSUSHITA ELECTRIC WORKS, LTD.), 12 April 1988. *
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 37558/1985, (Laid-Open No. 153938/1986), (ARUMU DENKI K.K.), 24 September 1981. *
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 45240/1986, (Laid-Open No. 157024/1987), (NIPPON KAIHEIKI KOGYO K.K.), 6 October 1987. *

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