JPH0145165Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a button for driving a switch mounted on a circuit board of a telephone or the like.

The hook switch of conventional telephones and the like is mounted on a circuit board attached to the bottom plate, and the hook button that drives the hook switch is housed in a hook button housing opening on the body that has a portion that regulates the upper and lower limit positions of the hook button. , the structure is such that hook information is obtained by operating the hook button from the outside. Therefore, the dimensional accuracy between the hook button and the hook lever of the hook switch is determined by the cover body, the bottom plate, the hook button, etc., and there is a limit to that dimensional accuracy, so as a means of absorbing dimensional errors, the hook switch is provided with a corresponding play stroke. It's well designed. Therefore, there is a disadvantage that the size of the switch must be large.

On the other hand, with the recent shift to LSI electronic components, there has been a market demand for smaller devices, but there is no suitable means to achieve dimensional accuracy of the button mounting structure without placing a burden on the switch. Ta.

The present invention aims to obtain such means, and provides a switch drive button mounting structure in which a button housing member for a button that drives the switch is attached to a circuit board on which the switch is mounted. .

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which 1 is a circuit board, 2 is a circuit component, 3 is a switch, 4 is a button accommodating member for accommodating a button 5 for driving the switch 3, and 6 is a case of a telephone. It is. After mounting the circuit component 2 and the hook switch 3 on the circuit board 1 and making solder connections, the button accommodating member 4 is attached, and the drive end 5-1 of the button 5 for the hook switch 3 and the lever end 3- of the hook switch 3 are attached to the button accommodating member 4. 1, the button 5 is lifted to the state shown in the figure by the spring force of the spring 3-2 of the switch 3, and the circuit board 1
The assembly is complete. The assembled circuit board 1 is attached to the housing 6. When button 5 is pushed down in the direction of the arrow, lever end 3-1 of switch 3
When the spring 3-2 rotates about the shaft 3-3 while resisting the spring force of the spring 3-2, the pair of contact springs 3-4
is configured to close the circuit.

2 and 3 show the main parts of the present invention, 1-1 of the circuit board 1 shown in FIG. 2 is a mounting hole for mounting the button accommodating member 4, and 1-2 is the assembled circuit. 4-1 of the button accommodating member 4 is a screw hole for screwing the board 1 to the cover body 6; -2 is a rotation prevention hole into which the rotation prevention part 5-3 of the button 5 is inserted; 4-3 is an open groove through which the drive end 5-1 passes when the button 5 is accommodated; 4-4 is the opening of the drive end 5-1. The upper position is regulated by the circuit board 1 by a stopper that determines the lower position. 4-5 is the circuit board 1
The engaging claw 4-6 is a mounting hole for mounting on the cover body 6, and for alignment with the circuit board 1, a notch 1-1a is provided in the mounting hole 1-1 of the circuit board 1.
A positioning portion that fits into this notch portion 1-1a is provided by forming a rotation stopper hole 4-2. When the button accommodating member 4 is pushed into the mounting hole 1-1 from the top side of the circuit board 1 on which the circuit component 2 and the switch 3 are mounted, the button accommodating member 4 is mounted on the circuit board 1 by the engagement hole 4-5. Ru. Furthermore, insert the button 5 from the lower surface side of the circuit board 1 into the fitting hole 4-1 of the button accommodating member 4 from the button operation surface side.
As shown in FIG. 3a, the drive end 5-1 and the opening 4
-3 and insert. At this time, the drive end 5-
1 and the lever end 3-1 of the hook switch 3 are in a disconnected state, and the rotation prevention hole (rotation prevention part) 4-2 of the button accommodating member 4 is in the rotation prevention part 5-3 of the button 5.
There is a relationship that does not match. Drive end 5 of button 5
-1 is inserted until it contacts the circuit board 1, since there is no wall 4-3a on the stopper 4-4 side of the opening groove 4-3, the drive end 5-1 is moved toward the lever end 3-1 of the hook switch 3. When turned, the rotation stopper 5-3 of the button 5 enters the rotation stopper hole 4-2 as shown in FIG. , the drive end 5-1 is the circuit board 1
The amount of movement is regulated by the stopper 4-4, and the button 5 is housed in the button housing member 4.

With this configuration, the switch 3
The relative positional dimensions of the button accommodating member 4 and the button 5 are
The structure is simple. Further, since no members or tools are required for attachment and there is no wasted space, it can contribute to downsizing of equipment.

Note that the engaging claws 4-5 do not have to be provided as temporary fixings to the circuit board 1. Also, stopper 4-
4 may also serve as a stopper for the switch 3, or may be used as a rotation stopper 5-3 of the button 5.

As explained above, in the present invention, the button that drives the switch is housed on the same board on which the switch is mounted, so variations in the relative positions of the switch and the button can be minimized, and the switch and equipment can be made smaller. This is a major contribution to the development of society.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the button mounting structure for a switch driving button of the present invention, and FIGS. 2 and 3 a and 3 b are a perspective view and a plan view showing the main parts of the present invention. 1... Circuit board, 1-1... Mounting hole, 1-1a
... Notch, 1-2 ... Screw hole, 2 ... Circuit component, 3 ... Hook switch, 3-1 ... Lever end,
3-2... Spring, 3-3... Shaft, 3-4... Contact spring, 4... Button housing member, 4-1... Fitting hole (insertion hole), 4-2... Rotation stopper Hole (rotation stopping part), 4-3...Open groove part, 4-3a...Wall, 4-
4...stopper, 4-5...engaging claw, 4-6...
Mounting hole, 5... Button, 5-1... Drive end, 5-
2...Guide part (sliding body), 5-3... Rotation stopping part, 6... Covering body.

Claims (1)

[Scope of utility model registration request] In a mounting structure for a switch drive button that is driven by a push button with a lever end of a switch mounted on a board housed in a housing member, the push button includes a sliding body and a switch drive end for driving the switch. and a rotation stopper part, and the housing member has an insertion hole through which the sliding body of the push button is inserted, and the drive end of the switch passes through the insertion hole when the sliding body is inserted into the insertion hole. an open groove connected to the insertion hole so that the push button can rotate to a predetermined position for driving the lever end of the switch, and a state in which the switch driving end is rotated to the predetermined position. A mounting structure for a switch drive button, comprising: a rotation stopper that relatively engages with the rotation stopper of the push button to prevent rotation.