JPH0339874Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention supports a movable element so as to be linearly movable by urging a guide member so that its distal end protrudes. The present invention relates to a switch that is turned on and off by the following steps, and is used, for example, in a door switch of an automobile.

"Prior Art" An example of a conventional switch is the one shown in FIG. 7.

That is, in the switch, a guide member 2 also made of a conductor is fixed to a base 1 made of a conductor, and a movable element 3 made of an insulator can be moved linearly through guide holes 2b, 2b of support pieces 2a, 2a of the guide member 2. The movable element 3 is supported by a spring 4 in a direction in which its distal end 3a protrudes, and a contact 5 is fixed to the proximal end 7 of the movable element 3, and the contact 5 has an insertion piece 5a. formed. The connector terminal 6 of the lead wire 6 is attached to the insertion piece 5a.
A can be attached and detached.

In this conventional switch, if the contactor 5 is not fixed to the base end 7 of the movable element 3, it will come off due to the biasing force of the spring 4, so the contactor 5 should be handled with the contactor 5 fixed to the movable element 3. , lead wire 6
is a separate part, and the connector terminal 6
The connection is made by inserting an insertion piece 5a into a.

``Problem that the invention attempts to solve'' However, in such a conventional switch, it is essential to attach the contact 5 to the mover 3, otherwise the mover 3 will come off. It is necessary to separately prepare the lead wire 6 and connect the connector terminal 6a to the insertion piece 5a of the contact 5, which increases the cost of manufacturing and managing the parts of the lead wire 6, and also makes it difficult to assemble the switch. However, since the contact 5 must be fixed while being pushed against the biasing force of the spring 4, the workability is poor and it is difficult to reduce costs in the process.

The present invention was devised in view of these conventional problems, and aims to provide a switch that is easy to assemble and eliminates the need for extra connectors, thereby solving the above problems.

"Means for Solving the Problems" The gist of the present invention for achieving the above object is as follows: A guide member made of a conductor in which supporting pieces having guide holes are erected facing each other, and the guide member. a movable element that is inserted into each guide hole of the movable element and supported so as to be linearly movable, and is biased toward the distal end by a biasing means; a locking part that is projecting open and inserted through the guide hole while being elastically deformed, and after passing through, elastically returns to the locking part and is locked in such a way that it cannot be pulled out; A switch is provided with a contact piece made of a conductor, to which a lead wire is connected, and a contact piece made of a conductor, which is arranged so as to be able to come into contact with and separate from the support piece by pushing the tip of the movable element.

``Operation'' Thus, the assembly of the switch is automatically completed by inserting the movable element into the guide hole of the guide member against the biasing force in the projecting direction. In other words, when the part of the mover with the locking part inserted into the guide hole, the locking part elastically deforms inward to prevent interference and becomes ready for insertion, but after passing, it elastically returns and exerts a biasing force. Even if the movable element is pushed by the movable element, the movable element cannot be inserted into the guide hole of the guide member from the opposite side, and in this state, the movable element is held so as not to come out.

It is sufficient to prepare a contact with a lead wire connected thereto and fix it to the proximal end of the movable element, making it extremely easy to assemble.

"Embodiments" Hereinafter, various embodiments of the present invention will be described based on the drawings.

1 to 3 show a first embodiment of the present invention.

In the switch 10, a movable member 40 made of an elastically deformable insulator, for example, resin, is held in a linearly movable manner by a guide member 30 made of a conductor and fixed to a base 20 made of a conductor, and biases the movable member 40. biasing means;
For example, a spring 50 is provided, and a contact piece 60 made of a conductor is fixed to the movable element 40.

The guide member 30 is made of a conductor, and the base portion 31
It has a groove-shaped cross section with supporting pieces 32 and 33 erected at the front and rear thereof, and a positioning hole 31a and a screw hole 31b are bored in the base part 31. The positioning protrusion 21 is fitted into the positioning hole 31a, and is fixed to the base 20 by a fixing screw 22 which is screwed into the screw hole 31b.

Each of the support pieces 32 and 33 has a rectangular guide hole 3.
4,35 are drilled.

The movable element 40 has an enlarged head 41 at a distal end portion 48 . The enlarged head 41 has a shape that allows it to be slidably inserted into the guide hole 34 of the support piece 32 of the guide member 30, and has a piece-shaped locking part that is cut out from the side walls 42, 42 on both sides and is elastically deformable. 43, 43 are erected.

The end portion 43a of the locking portion 43 faces toward the distal end of the mover 40, and the base portion 43b of the locking portion 43 faces the enlarged head 41.
It is continuous to the base of.

A guided leg portion 44 that is thinner than the enlarged head portion 41 extends from the enlarged head portion 41 of the mover 40 .
4 is just the guide hole 3 of the support piece 33 of the guide member 30
It has an external shape that allows it to be slidably inserted into the tube.

The guided leg 44 is located approximately between the support pieces 32, 33 of the guide member 30, between which the guided leg 44 is inserted into a coil-shaped spring 50.
The tip 51 of the spring 50 engages with the step 45 between the enlarged head 41 of the mover 40 and the guided leg 44, and the rear end 52 of the spring 50 engages with the support piece 33 of the guide member 30. The spring 50 biases both in the direction of expanding them.

The contact piece 60 has contact terminals 62 on both sides of the base 61,
62 is bent toward the support piece 33 of the guide member 30, and the contact terminal 62 has a tip 62a formed at the tip of the inclined end surfaces 62b and 62c.

A screw insertion hole 61a is formed in the base 61 of the contact piece 60, and a screw 63, which is a fixing means and inserted into the screw insertion hole 61a, is screwed into the base end 46 of the guided leg 44 of the movable element 40. It's starting to stick.

A conductive piece 64 is bent and extends from the base 61 of the contact piece 60 , and a lead wire 65 is connected to the tip of the conductive piece 64 via a caulking terminal 66 .

Next, the action will be explained.

The procedure for assembling the switch 10 is as follows.

To assemble the mover 40, the guide member 30
The spring 50 is slightly compressed and inserted between the support piece 32 and the support piece 33, and the proximal end 46 of the guided leg 44 is inserted through the guide hole 34 of the support piece 32 so as to pass through the spring 50. Insert. The base end 46 is the support piece 3
3, insert it into the guide hole 35.

Before completely inserting, the base 43b of the locking part 43 of the enlarged head 41 of the movable element 40 is inserted into the guide hole 3 of the support piece 32.
It hangs over the front entrance of 4. When the mover 40 is pushed in forcefully, it is pushed to the entrance of the guide hole 34, and since the contact is in the forward direction, the locking part 43 falls down, and when it falls inside the outer width of the enlarged head 41, it can pass.

When near this state, the stepped portion 45 engages with the tip 51 of the spring 50, so the movable element 40 is pushed in against the biasing force of the spring 50. When the end portion 43a of the locking portion 43 passes through the guide hole 34 of the support piece 32 of the guide member 30, it stands up due to its elasticity.

When the mover 40 is released from this state, the force of the spring 50 pushes the mover 40 in the removal direction.
Since the end portion 43a of the locking portion 43 is pushed in the opposite direction to make it stand up, the support piece 32 of the guide member 30
It cannot pass through the guide hole 34 of the movable element 4.
0 remains attached.

Since the switch 10 is in a stable state, the base 61 of the contact piece 60 is connected to the guided leg 44 of the mover 40.
When the screw 63 is inserted into the screw insertion hole 61a and screwed onto the base end 46 of the movable element 40 and fastened, the movable member 40 is attached together with the lead wire 65.

When the contact piece 60 is fixed, the end 43a of the locking part 43 of the movable element 40 floats from the guide hole 34 of the support piece 32 of the guide member 30, and the contact terminals 62, 62
is in pressure contact with the support piece 33 of the guide member 30.
The guide member 30 may be fixed to the base 20 at an appropriate stage, and the guide member 30 is fixed to the base 20 by fitting the positioning protrusion 21 into the positioning hole 31a and screwing the fixing screw 22 into the positioning hole 31a.

When the tip end 48 of the movable element 40 is not pressed, the contact terminals 62, 62 of the contact piece 60 are in pressure contact with the support piece 33 of the guide member 30 and are electrically connected, and the lead wire 65 is connected to the contact piece 30. It is electrically connected to the base 20 via the caulking terminal 66, the conductive piece 64, the contact terminal 62, and the guide member 30, which are the ends of the terminal 60, and is in an on state.

When the tip of the movable element 40 is pushed to move against the biasing force of the spring 50, the contact terminals 62, 62 of the contact piece 60 separate from the support piece 33 of the guide member 30, and conduction is broken, so the switch is turned off. state. When the force pushing the tip 48 of the mover 40 is released, the spring 5
The movable element 40 returns with a biasing force of 0 and enters the on state as described above.

4 to 6 show a second embodiment. Since most of the configuration of this embodiment is the same as that of the first embodiment, similar parts are given the same reference numerals and redundant explanations will be omitted.

The feature of the second embodiment is that the proximal end portion 46 of the movable element 40
A clamping part 47 is formed as a fixing means, and a clamping hole 67 is bored in the base 61 of the contact piece 60 to fit into the clamping part 47 of the movable element 40.

The clamped portion 47 includes a split groove 47a carved in the center of the base end 46, a fitting groove 47b, and a groove 47a carved in the center of the base end 46.
and guide surfaces 47c, 47c formed at the ends of the guide surfaces 47c, 47c. The fitting hole 67 of the base 61 of the contact piece 60 is connected to the fitting groove 4 of the fitting part 47 of the movable element 40.
The dimensions are such that 7b and 47b just fit together.

The assembly of the switch 10 in this embodiment consists of the first
As in the embodiment, this is done by positioning the spring 50 between the support pieces 32 and 33 of the guide member 30 and inserting the movable element 40 into the guide holes 34 and 35. As in the first embodiment, when the movable element 40 is fully inserted, the locking part 43 prevents the movable element 40 from coming off.

In this state, the clamped part 47 of the base end 46 of the movable element 40 is located protruding behind the support piece 33 of the guide member 30, and the contact piece 60 is fitted in the clamped hole 67 of the base part 61. This is done by inserting the clamping part 47.

When the part to be clamped 47 is inserted into the clamping hole 67, the guide surface 47c hits the inner edge of the clamping hole 67, and when it is pushed further, it is pushed inward. Since there is a split groove 47a, it can be elastically deformed, and both sides of the clamped part 47 can be reduced in diameter, thereby allowing the clamped part 47 to fit into the clamping hole 6.
7, and when it is fully inserted, the clamping hole 67 will be in a position corresponding to the split groove 47a, and at this time, the diameter of the clamped part 47 will expand to fit into the clamping hole 6.
7 is fitted into the split groove 47a so as not to come off.

In short, when the clamped portion 47 of the base end 46 of the movable element 40 is inserted into the clamping hole 67 of the base 61 of the contact piece 60, the two are automatically fitted and fixed.

This embodiment has the advantage that screws for fixing the contact piece 60 to the movable element 40 are not required, and assembly can be simplified.

"Effects of the invention" According to the switch according to the invention, since the movable member can be stably held independently on the guide member, the contact piece can be easily attached, and the lead wire is connected to the contact piece. This makes it possible to provide an excellent switch that has a simple structure, a small number of parts, and is easy to assemble.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, in which FIG. 1 is an exploded perspective view of the switch, FIG. 2 is a front view, and FIG. 3 is a sectional view taken along the line of FIG.
4 to 6 show the second embodiment, and the fourth embodiment
The figure is an exploded perspective view of the switch, FIG. 5 is a front view, FIG. 6 is a sectional view taken along the line of FIG. 5, and FIG. 7 is an exploded perspective view of a conventional switch. 10...Switch, 20...Base, 30...
Guide member, 31... Base portion, 32, 33... Support piece, 34, 35... Guide hole, 40... Mover,
41... Enlarged head, 43... Locking part, 44... Guided leg, 46... Base end, 47... Clamped part (fixing means), 48... Tip, 50... Spring (biasing means), 60... contact piece, 63... screw (fixing means), 65... lead wire, 66... caulking terminal (end).

Claims (1)

[Claims for Utility Model Registration] A guide member made of a conductor in which support pieces having guide holes are erected to face each other, and a biasing means that is inserted into each guide hole of the guide member and supported so as to be capable of linear movement. a movable element biased toward the distal end by a movable element, the movable element being provided on the movable element and protruding outwardly from the side of the movable element in the direction of the distal end, the movable element being inserted through the guide hole while being elastically deformed; a locking part that elastically returns after passing and is locked so that it cannot be pulled out; A switch comprising a contact piece made of a conductor and arranged so as to be able to come into contact with and separate from a support piece.