JPH0613025U - Switch structure - Google Patents

Abstract

(57) [Summary] [Purpose] To improve productivity and quality by improving the structure of the switch. [Structure] Lid 10a and body 10b made of an insulator
And a housing 10 composed of
The switch body 1 is constituted by the contactor 30 arranged inside, a holding piece 50 for holding the contactor 30, and a back-and-forth movable operation button 60 fixed to the holding piece 50. On the other hand, the terminal 2 having the engaging portion 25 formed at one end of the lead wire 40
0 is fixed. Thus housing 10
The lead wire 4 from the terminal 20 side into the insertion hole 13 opened in the
Switch structure A in which the engaging portion 25 and the engaging portion 15 in the housing 10 are engaged by inserting 0, and both are integrated quickly and reliably.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a switch, which is one of the constituent elements of an electric circuit, and more specifically, in a motor such as a small (25 to 50 cc) two-cycle engine used particularly in a chainsaw, The present invention relates to an improved slide type switch which stops the engine by cutting off the conduction from the dynamo to the ignition coil and suppressing ignition of the ignition plug.

[0002]

[Prior art]

 In recent years, various types of engines for driving chainsaws and mowers have been developed and put into practical use.

The engine is stopped by connecting the dynamo to the chassis by means of a slide type switch, grounding the electromotive force generated by the dynamo to cut off the conduction of electricity to the ignition coil and igniting the ignition plug. It is done by deterring.

Conventionally, the switch is connected to a housing made of an insulating material such as a synthetic resin, an input / output terminal fixedly arranged inside the housing, and an operation button projecting outside the housing. A holding piece that moves back and forth inside the housing, a contact that is attached to the holding piece and that can be contacted and separated from the input terminal, and a lead that has one end soldered to the input / output terminal and extends outside the housing. It consisted of a line and.

When the switch is used, one end of the lead wire (input side) is connected to the dynamo, and the other end of the lead wire (output side) is connected to the chassis.

Therefore, when the operation button is slid to bring the contactor into contact with the input / output terminal, the dynamo and the chassis are brought into conduction and the electromotive force generated in the dynamo is grounded, so that the ignition coil is electrically connected. The conduction is cut off and the engine is stopped.

[0007]

[Problems to be solved by the device]

 However, in manufacturing the above-mentioned conventional switch for stopping the engine, there are the following problems.

That is, a switch main body and a lead wire, which are composed of a housing, an operation button, a holding piece, a contact, and an input / output terminal, are soldered to one end of the lead wire and the terminal fixedly arranged in the housing. Since they were connected by soldering, a great deal of time and labor and sophisticated technology were required for the soldering work, and it was extremely difficult to improve the productivity.

In particular, in the soldering, the lid portion of the housing and the main body portion must be separated, and the inside of the housing must be opened to perform the work. After that, the lid portion and the main body portion are attached with the lead wires attached. There is a problem that it is difficult to perform the soldering work and the subsequent ultrasonic welding work because it is necessary to ultrasonically weld the joining portion of the above.

In addition, in the soldering, there is a risk that poor conduction may occur due to poor connection between the input / output terminal and the lead wire.

On the other hand, in the case of a switch, since the length of the lead wire and the mounting terminal are different each time, it is not possible to produce it in advance before receiving an order, which in turn delays the delivery time when receiving an order with a short delivery time. Was sometimes invited.

The present invention has been made in view of the above circumstances, and by improving the switch, work in production becomes extremely easy, productivity is dramatically improved, and conduction is improved. It is intended to provide a switchgear structure that can achieve a reduction in the rate of defective products such as defects.

[0013]

[Means for Solving the Problems]

 The present invention is a switch configured such that a contact can be attached to and detached from a terminal disposed inside a housing made of an insulator, and the terminal is fixedly formed at one end of a lead wire. At the same time, the housing is formed with an insertion hole into which the lead wire to which the terminal is attached can be inserted, and further, both the housing and the terminal are formed with engaging portions for preventing the lead wire from being pulled out. The above-mentioned problems are achieved by providing a switch structure characterized by the above.

[0014]

[Action]

 In the switch structure of the present invention, after the switch body and the lead wire are manufactured separately, they can be engaged easily and quickly to improve the troublesomeness, productivity and quality of the soldering work. You can eliminate the difficult problems involved.

That is, by fixing the terminal to one end of the lead wire and press-fitting the terminal into the switch body, the switch body and the lead wire are engaged with each other.

Therefore, after disposing the contactor and the holding piece for holding the contactor in the housing composed of the lid portion and the body portion, the lid portion and the body portion are ultrasonically welded, and thereafter the holding piece is attached to the holding piece. It becomes possible to perform the work of fixing the operation button to manufacture the switch body and the work of fixing the terminal to the lead wire separately, and since this can be engaged quickly and reliably, it is extremely It is efficient.

When a lead wire with a terminal is inserted into the switch body, the insulating portion in the switch body fixes the terminal and prevents short circuit between the input and output terminals. The engaging portion formed on the terminal is engaged with the engaging portion of the housing to prevent the terminal and the lead wire from being pulled out.

[0018]

[Embodiments] Hereinafter, embodiments of the switch structure of the present invention will be described in detail with reference to the drawings.

FIG. 1A is a sectional view showing a side surface of the switch structure of the present invention, FIG. 1B is a plan view showing the inside of the switch structure of the present invention, and FIG. 2A is the same embodiment. 2B is a cross-sectional view taken along the line AA of FIG. 2A, and FIG. 3A is a view of the housing of the switch structure of the same embodiment. FIG. 3 (b) is a plan view showing the lid portion, FIG. 3 (b) is a side view showing the lid portion of the housing in the switch structure of the embodiment, FIG. 4 is a sectional view taken along line BB in FIG. 2 (a), and FIG. ) Is a bottom view showing the main body of the housing in the switch structure of the same embodiment, Fig. 5 (b) is a sectional view taken along line XX in Fig. 5 (a), and Fig. 6 (a) is the opening / closing of the same embodiment. FIG. 6B is a plan view showing terminals in the switch structure, and FIG. 6B is a side view showing terminals in the switch structure of the embodiment.

The switch structure A of the present invention is characterized in that a contact 30 can be attached to and detached from a terminal 20 disposed inside a housing 10 made of an insulator as shown in FIG. In the switch configured as described above, the terminal 20 is formed so as to be fixed to one end of the lead wire 40, and the housing 10 has an insertion hole 13 into which the lead wire 40 having the terminal 20 attached therein can be inserted. Further, the engaging portions 15 and 25 for preventing the lead wire 40 from being pulled out are respectively formed on both sides of the housing 10 and the terminal 20.

As shown in FIGS. 2 to 5, the housing 10 includes a lid portion 10a made of an insulating material such as synthetic resin, and a main body portion 10b made of an insulating material such as synthetic resin like the lid portion 10a. And both are adapted to fit together.

As shown in FIGS. 2 to 4, the lid portion 10a of the housing 10 has a substantially rectangular shape, and projections 19a, 19a, ... Are provided at four corners of the inner surface. The semi-cylindrical insertion holes 13, 13 are formed at one end, and a corrugated groove 16 that engages with the base end of the contact 30 is formed at the other end.

Further, an elongated hole 11 is opened in the approximate center of the lid portion 10a so that an operation button 60 inserted from the outside can be moved back and forth, and a rectangular shape is provided in the vicinity of the insertion hole 13. The engaging portions 15, 15 that are notched in a shape are opened.

Further, the terminal 20 (the input terminal 20a and the output terminal 20b) is fixed in the inner side direction from the entrance of the insertion hole 13, the input / output terminals 20a and 20b are prevented from being short-circuited, and the vicinity of the tip of the terminal 20 is provided. 2 (b), the insulating portion 18 is formed integrally with the lid portion 10a so as to separate the insertion holes 13, 13 in order to insulate the same.

The contact 30 made of a conductor such as a metal plate has an arm portion 31a that abuts the input terminal 20a and an arm portion 31b that abuts the output terminal 20b. It is formed in a curved shape so as to engage with the groove 16.

Further, the contact piece 30 is attached to the holding piece 50 to which the operation button 60 is coupled, so that the contact piece 30 slides back and forth as the operation button 60 moves back and forth. Has become.

On the other hand, the main body portion 10b of the housing 10 has a substantially rectangular shape as shown in FIG. 5, and at the four corners of the inner surface thereof, there are formed coupling holes 19b into which the protrusions 19a are fitted, and A finger pad 14 is formed on the surface of the main body 10b to facilitate ON-OFF operation.

On the other hand, as shown in FIG. 6, the terminal 20 made of a conductor such as metal has a first holding portion 21 for holding the vinyl outer casing 41 of the lead wire 40 and a copper wire portion 43 of the lead wire 40. It has a second holding portion 23 for holding, and is fixed to one end of the lead wire 40 by crimping the portion with a crimping device or the like.

Further, the terminal 20 has a notch formed at a substantially central portion thereof, and the engaging portion 25 is formed by bending the notch in a direction opposite to the holding portions 21 and 23.

Therefore, when the lead wire 40 to which the terminal 20 is fixed is inserted from the terminal 20 side into the insertion hole 13, the tip of the terminal 20 is press-fitted and fixed in the gap between the insulating portion 18 and the inner surface of the lid 10a. At the same time, the engaging portion 25 is locked to the engaging portion 15 formed in the housing 10 to prevent the terminal 20 and the lead wire 40 from being pulled out.

The engaging portions 15 and 25 are configured as described above to easily and quickly engage the two sides to prevent the engaging / disengaging, while inserting a pen or the like from the engaging portion 15. This configuration is preferable because the lead wire 40 can be removed by pressing the joining portion 25, but the engaging portion 15 is a protrusion formed in a convex shape, or an engaging portion formed in a convex shape. It is also possible to make the concave portion that engages with 15 the engaging portion 25.

Next, the usage method, usage status, etc. of the switch structure A of the present invention will be described in detail with reference to FIG.

First, a description will be given of the manufacturing of the switch structure A of the present application. First, the contact 30 is arranged on the lid 10a of the housing 10 as shown in the drawing, and is further held in the opening 33 of the contact 30. The holding piece 50 is arranged by inserting the neck portion 51 of the piece 50.

Next, after covering the main body portion 10b of the housing 10 and fitting the protrusion 19a and the coupling hole 19b, the joint portion between the lid portion 10a and the main body portion 10b is welded by using ultrasonic waves or the like. The switch body 1 is obtained by fixing the operation button 60 inserted through the long hole 11 to the holding piece 50 with a screw or the like.

On the other hand, in the lead wire 40 which has the vinyl outer casing 41 and the copper wire portion 43 after the outer skin made of vinyl or the like is peeled off, the vinyl outer casing 41 is provided with the first holding portion 21 of the terminal 20, The terminals 20 are fixed by positioning the second holding portions 23 on the line portions 43 and then caulking the portions with a caulking device or the like.

After that, when the lead wire 40 is inserted from the terminal 20 side into the insertion holes 13, 13 of the switch body 1, as described above, the tip of the terminal 20 is placed in the gap between the insulating portion 18 and the inner surface of the lid portion 10a. By being sandwiched, the terminal 20 is fixed, and the engaging portion 25 of the terminal 20 is locked to the engaging portion 15 of the lid portion 10a to fix the terminal 20. The removal of the wire 40 is suppressed.

In the switch structure A obtained as described above, when the operation button 60 is slid forward from the illustrated position (Y1 direction), the holding piece 50, and hence the contactor 3, are accompanied by this. When 0 moves forward and the tip of the terminal 20 is located on the insulating portion 18, the circuit is opened.

On the contrary, when the operation button 60 is slid backward (Y2 direction), the holding piece 50, and hence the contact 30, is moved rearward, and the tip of the terminal 20 moves toward the terminal 20. The circuit comes to be closed (conducted) by contacting the front end.

Since the base end of the contact 30 is always engaged with the groove 16, the contact 30 does not move unless the operation button 60 is intentionally operated.

Further, according to the switch structure A having the above-described configuration, it is possible to improve the productivity by about 5 to 10 times as compared with the conventional product.

[0041]

[Effect of device]

 Since the switch structure according to the present invention is configured as described above, it has the following effects.

(1) In the switch structure of the present invention, the terminal is fixed to one end of the lead wire, and the switch body and the lead wire are engaged by press-fitting this into the switch body. Therefore, after the switch body and the lead wire are manufactured separately, they can be engaged easily and quickly, and in addition, the troublesomeness involved in soldering work can be eliminated. In addition, it has an excellent effect that productivity and quality can be dramatically improved.

(2) In particular, after disposing the contactor and the holding piece for holding the contactor in the housing composed of the lid part and the body part, the lid part and the body part are ultrasonically welded, and thereafter, The work of fixing the operation button on the holding piece to manufacture the switch main body and the work of fixing the terminal to the lead wire can be performed separately, and since this can be engaged quickly and reliably, it is extremely It has the excellent effect of being efficient.

(3) Further, when a lead wire with a terminal is inserted into the switch body, the terminal is fixed by the insulating portion inside the switch body, and both the input and output terminals are separated by the insulating portion. This has the excellent effect of preventing short circuits.

(4) In addition, the lead wire to which the terminal is fixed does not come off easily because the engaging portion formed on the terminal is engaged with the engaging portion of the housing. It has an excellent effect.

(5) Further, in the present invention, the switch body and the lead wire can be separately produced, while the switch body has a common structure, the switch body is It becomes possible to produce in advance, and in each case, lead wires with different mounting lengths and mounting terminals are processed according to the order (lead wire processing is cutting, only terminal mounting is extremely high). Since this can be quickly integrated with the switch body, it has an excellent effect that productivity is dramatically improved and delivery time is not delayed.

[Brief description of drawings]

1A is a sectional view showing a side surface of a switch structure of the present invention, and FIG. 1B is a plan view showing the inside of the switch structure of the present invention.

2A is a bottom view showing a lid portion of a housing in the switch structure of the embodiment, and FIG. 2B is a sectional view taken along line AA in FIG. 2A.

3A is a plan view showing a lid portion of a housing in the switch structure of the embodiment, and FIG. 3B is a side view showing a lid portion of the housing in the switch structure of the embodiment.

FIG. 4 is a sectional view taken along line BB in FIG.

5A is a bottom view showing a main body of a housing in the switch structure of the embodiment, and FIG. 5B is a sectional view taken along line XX in FIG. 5A.

6A is a plan view showing a terminal in the switch structure of the same embodiment, and FIG. 6B is a side view showing a terminal in the switch structure of the same embodiment.

[Explanation of symbols]

 10 Housing 13 Insertion Hole 15 Engagement Part 20 Terminal 25 Engagement Part 30 Contactor 40 Lead Wire 50 Holding Piece 60 Operation Button

Claims (1)

[Scope of utility model registration request] 1. A switch in which a contact is attached to and detached from a terminal disposed inside a housing made of an insulator, the terminal being fixed to one end of a lead wire. At the same time, the housing is formed with an insertion hole into which the lead wire to which the terminal is attached can be inserted, and further, both the housing and the terminal are formed with engaging portions for preventing the lead wire from being pulled out. Switch structure characterized by.