JP2005079025A - Pushbutton switch structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent interference between a bottom cap and a movable contact when a bottom cap is attached to a switch case, and to facilitate the assembly of a push button switch.
A switch case includes a switch case, a button part provided with a movable contact, and a fixed contact corresponding to the movable contact of the button part. In the pushbutton switch 25 having a bottom cap 53 attached to the part, a stopper surface 65 for restricting the expansion of the movable contact 37 is provided on the bottom cap side of the button part, and the bottom cap is provided on the button part side of the bottom cap. When attached to the switch case, an inclined guide surface 75 for guiding the end of the movable contact restricted by the stopper surface 65 to the center of the switch is provided.
[Selection] Figure 9

Description

  The present invention relates to a pushbutton switch structure.

  A push button switch is operated by pressing a button part, and generally comprises an operation mechanism having a button body and a contact mechanism having a contact part. Used.

As a conventional push button switch structure, a push lock switch is known (for example, refer to Patent Document 1).
Japanese Utility Model Publication 4-101329

FIG. 10 is a reproduction of FIG.
In the push lock switch of Patent Document 1, the movable platen 5 is moved to bring the movable contact piece 8 into contact with the fixed contact 9 by moving the operation element 3 slidably fitted to the case 1.
The case 1 has a substantially U-shaped cross-sectional shape and a base 2 attached to the opening side.
The movable contact piece 8 is fitted to the movable platen 5, and slidably contacts the inner surface of the base 2 with elasticity, and comes into contact with and separates from the fixed contact 9.

  However, the push lock switch disclosed in Patent Document 1 has a configuration in which the base 2 is attached to the side of the case 1 on the side (left and right in the figure). There are times when I want to change the specifications. For example, when the pressing force to the base 2 side is large, if the side of the case 1 is integrally formed and a bottom cap is fitted into the bottom opening, it is easy to ensure rigidity with a simple configuration. However, in the structure in which the bottom cap is fitted, when the bottom cap is fitted, the bottom cap may interfere with the distal end of the movable contact piece 8. A configuration in which a lid material such as the above is fitted is advantageous.

  An object of the present invention is to prevent interference between the bottom cap and the movable contact when the bottom cap is attached to the switch case, and to facilitate the assembly of the push button switch.

  The invention according to claim 1 includes a switch case, a button portion that is provided so as to be able to be pushed into the switch case and includes a movable contact, and a fixed contact corresponding to the movable contact of the button portion. In the pushbutton switch structure having a bottom cap attached to the part, the bottom cap side of the button part is provided with a stopper surface that regulates the expansion of the movable contact, and this bottom cap is attached to the switch case on the button part side of the bottom cap. When mounting, an inclined guide surface for guiding the end of the movable contact restricted by the stopper surface to the center of the switch is provided.

  In the invention according to claim 1, the bottom cap side of the button part is provided with a stopper surface that restricts the expansion of the movable contact, and when the bottom cap is attached to the switch case on the button part side of the bottom cap, Because it has an inclined guide surface that guides the end of the regulated movable contact to the center of the switch, when the bottom cap is pushed almost half way, the inclined guide surface hits the end of the movable contact, and the inclined guide surface The end of the movable contact is moved to the center of the switch by tilting. The moving movable contact bends away from the inclined guide surface. Accordingly, there is an advantage that interference between the bottom cap and the movable contact is prevented, and there is an advantage that the push button switch can be easily assembled.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a diagram showing a shift lever structure using a pushbutton switch of the present invention and a vehicle interior. A vehicle 11 is an automatic transmission vehicle (AT vehicle), that is, a vehicle equipped with an automatic transmission, A driver's seat 12 provided at the front, an instrument panel 13 provided in front of the driver's seat 12, a steering wheel 14, and a shift lever device 15 disposed at the center of the instrument panel 13.

  The shift lever device 15 selects and sets a desired driving condition from predetermined driving conditions. The driving condition is set to “P”, “R”, “N”, “D”, “2”, respectively. The abbreviations are displayed, and these are arranged in this order in five positions, the gate 21 is formed in a straight line, the grip 23 of the shift lever 22 is held with the left hand, and the shift lever 22 is moved along the gate 21 to the position where the driving conditions are displayed. Move it in a straight line. At that time, depending on the conditions, the knob 24 is moved while being pushed. FIG. 1 shows the state of the shift lever 22 in which the “N” range is selected. Reference numeral 25 denotes a push button switch, and 26 denotes a lock release key hole.

P is a parking range, which is a parking-only brake range.
R is a reverse (reverse) range and a range in which the vehicle travels in the back gear.
N is a neutral (neutral) range in which the power is turned off between the engine and the drive train.
D is a drive range which performs automatic gear shifting of all gears during normal driving.
Reference numeral 2 denotes a second range which travels with the second gear hold.

FIG. 2 is a front view of the pushbutton switch of the present invention.
The push button switch 25 is used as an overdrive (OD) button, and includes a circular button portion 31, a contact mechanism 32 that supports the button portion 31, and an electric wire portion 33 connected to the contact mechanism 32. F is a standby position, S is a stroke amount until operation (conduction) is started, and Lm is a maximum stroke amount.

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2 and shows a standby state of the pushbutton switch.
The button unit 31 includes a button main body 34 that is pressed by the operator, a slider 36 that is fitted to the shaft 35 of the button main body 34 and slides together with the button main body 34, a movable contact 37 attached to the slider 36, and a click piece 38. It consists of.

The movable contact 37 is formed in a U-shaped cross section, forms a fixed portion 41 to be fixed to the slider 36, extends the bent portion 42 by a distance L 1 connected to the fixed portion 41, and connects to the bent portion 42 to form a contact portion. 43 is formed into an arc shape. Reference numeral 44 denotes an end of the movable contact 37.
The click piece 38 is formed in a U-shaped cross section, forms a fixing portion 45 to be fixed to the slider 36, extends the bending portion 46 by a distance L2 connected to the fixing portion 45, and connects to the bending portion 46 to form a convex portion 47. This gives a click feeling.

The contact mechanism 32 includes a switch case 51, a bottom cap 53 attached to the bottom portion 52 of the switch case 51, a stationary contact 54 attached to the bottom cap 53, and a return spring 55 provided in the center. Reference numeral 56 denotes an upper part of the switch case 51.
The switch case 51 is formed by forming a guide cylinder 61 on a bowl-shaped case body 57 (upward in the figure) and forming an opening 62 in the bottom (downward in the figure).
The return spring 55 returns the button body 34 to the standby position F together with the slider 36 when not operated.

FIG. 4 is an operation explanatory view of the pushbutton switch of the present invention, and shows a cross section of the pushbutton switch.
When the push button switch 25 is pushed by the maximum stroke amount Lm, the movable contact 37 comes into close contact with the fixed contact 54 and maintains conduction.
When the push button switch 25 is pushed by the stroke amount S, the movable contact 37 starts to contact the fixed contact 54 and can be connected to each other.

  Further, when the push button switch 25 is pushed by the maximum stroke amount Lm, the convex portion 47 of the click piece 38 is once engaged with the click convex portion 84 of the bottom cap 53 to give a click feeling. When the hand is released from the button body 34, the button body 34 automatically returns to the standby position F by the return spring 55.

FIG. 5 is a sectional view of the slider of the pushbutton switch of the present invention.
The slider 36 includes a stopper surface 65 that restricts the expansion (in the direction of arrow a) of the movable contact 37. Specifically, a cylindrical fitting portion 66 that fits the button main body 34 and is slidably fitted to the guide tube 61 of the switch case 51 is formed, and the movable contact 37 is fixed to the end of the fitting portion 66. The first fixing portion 67 is formed, the stopper surface 65 is formed at an angle θ1 continuously to the fixing portion 67, the second fixing portion 71 for fixing the click piece 38 to the end of the fitting portion 66 is formed, and the second fixing portion A restricting surface 72 is formed at an angle θ2 that is continuous with 71 and restricts the spread of the click piece 38 (in the direction of the arrow b), and a spring latching portion 73 is formed at the center of the end of the fitting portion 66.
That is, the stopper surface 65 that restricts the expansion of the movable contact 37 is provided on the lower portion 74 of the button portion 31 on the bottom cap side.

FIG. 6 is a cross-sectional view of the bottom cap of the pushbutton switch of the present invention.
The bottom cap 53 includes an inclined guide surface 75. Specifically, the bottom cap 53 is formed in a bowl shape with a main body 76 fitted into the case main body 57 of the switch case 51, and is formed on an upper portion 77 on the button portion side of the bottom cap 53 (main body 76). When the bottom cap 53 is attached to the switch case 51, the end 44 (see FIG. 3) of the movable contact 37 (see FIG. 3) regulated by the stopper surface 65 (see FIG. 5) is guided to the center 78 of the switch (arrow). d direction) The inclined guide surface 75 is formed at an angle θ 3, the fixed contact 54 is inserted into the corner 81 of the bottom cap 53, and the click protrusion 84 is formed on the inner surface 83 of the bottom cap 53 facing the fixed contact 54. A spring hook 85 is formed at the bottom center of the bottom cap 53.

Next, the assembly procedure and operation of the pushbutton switch of the present invention will be described.
FIG. 7 is an explanatory diagram (part 1) for assembling the push button switch of the present invention.
First, the slider 36 is inserted through the opening 62 of the switch case 51 (in the direction of the arrow e), and the fitting portion 66 of the slider 36 is fitted into the guide cylinder 61 of the switch case 51 to incorporate the slider 36. Subsequently, the shaft portion 35 of the button portion 31 is integrally attached to the fitting portion 66.

FIG. 8 is an explanatory diagram (part 2) for assembling the push button switch of the present invention.
Subsequently, the return spring 55 is placed on the spring hooking portion 85 of the bottom cap 53, and the bottom cap 53 on which the return spring 55 is placed is inserted through the opening 62 of the switch case 51 as indicated by the arrow f and pushed. When pushed, the inclined guide surface 75 of the bottom cap 53 starts to hit the movable contact 37 as shown by the arrow g.

FIG. 9 is an explanatory diagram (part 3) for assembling the push button switch of the present invention.
By further pushing in, the assembly of the pushbutton switch is completed. At that time, when the bottom cap 53 is pushed almost half, the inclined guide surface 75 comes into contact with the end 44 of the movable contact 37 and the arc-shaped contact portion 43, so that the inclined guide surface 75 is inclined by its own inclination. And the arc-shaped contact portion 43 are moved to the center 78 of the switch as indicated by an arrow h, and the angle δ1 of the movable contact 37 away from the stopper surface 65 is increased so that the bent portion 42 of the movable contact 37 is moved. Bend. Therefore, there is an advantage that interference between the bottom cap 53 and the movable contact 37 is prevented, and there is an advantage that the push button switch 25 can be easily assembled.

  When the bottom cap 53 is pushed almost halfway, the click projection 84 moves the click piece 38 to the center 78 of the switch as shown by the arrow j and increases the angle δ2 of the click piece 38 away from the regulating surface 72. Then, the bending portion 46 of the click piece 38 is bent. Therefore, there is an advantage that interference between the bottom cap 53 and the click piece 38 is prevented, and there is an advantage that the push button switch 25 can be easily assembled.

  Although the push button switch structure of the present invention is applied to a four-wheeled vehicle in the embodiment, it can also be applied to a tricycle, a construction machine, an agricultural machine, and an industrial machine, and may be applied to a general vehicle. .

  The push button switch structure of the present invention is suitable for a four-wheeled vehicle.

The figure which shows the shift lever structure and vehicle interior using the pushbutton switch of this invention Front view of the pushbutton switch of the present invention 3-3 sectional view of FIG. Operation explanatory diagram of the pushbutton switch of the present invention Sectional view of slider of pushbutton switch of the present invention Sectional view of bottom cap of pushbutton switch of the present invention Explanatory drawing of assembly procedure of pushbutton switch of the present invention (Part 1) Explanatory drawing of assembly procedure of pushbutton switch of the present invention (Part 2) Explanatory drawing of assembly procedure of pushbutton switch of the present invention (Part 3) Fig. 1 reprint of Patent Document 1

Explanation of symbols

  25 ... push button switch, 31 ... button part, 37 ... movable contact, 44 ... end of movable contact, 51 ... switch case, 52 ... bottom part of switch case, 53 ... bottom cap, 54 ... fixed contact, 65 ... stopper surface, 74 ... bottom cap side of button part (lower part of button part), 75 ... inclined guide surface, 77 ... button part side of bottom cap (upper part of bottom cap), 78 ... center of switch.

Claims (1)

A switch case, a button portion that is provided so as to be able to be pushed into the switch case and includes a movable contact, and a bottom cap that includes a fixed contact corresponding to the movable contact of the button portion and is attached to the bottom portion of the switch case. In a pushbutton switch structure having
On the bottom cap side of the button part, provided with a stopper surface that regulates the expansion of the movable contact,
A push guide is provided on the button portion side of the bottom cap, and an inclined guide surface that guides the end of the movable contact restricted by the stopper surface to the center of the switch when the bottom cap is attached to the switch case. Button switch structure.

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