JPH0520222U - Switch structure - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide an electrical connector structure in which the connector can be easily attached to an attachment and the handling thereof is easy. An engaging portion is formed on the operating body 11 and the movable piece 13, and the snap action devices 16a and 16b include a spring receiving body 23 having a locking groove portion 27, a spring fitting portion 28, and a rod portion 30. The spring receiving body 24 having the stop groove portion 32, the spring fitting portion 33, and the rod insertion hole 36 is provided, and one end portion of the coiled spring 25 is fitted and locked to the spring fitting portion 28, so that the spring receiving body 23 The rod portion 30 is connected to the rod insertion hole 3 of the spring receiver 24.
6, and the other end of the coil spring 25 is fitted and locked to the spring fitting portion 33 of the spring receiver 24, and the spring receiver 24 is locked to the engaging portion of the operating body 11. The groove portion 32 is locked, and the engaging groove portion 27 of the spring receiver 24 is engaged with the engaging portion of the movable piece 13.
And the snap action device was arranged between the operating body 11 and the movable piece 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the present invention, the movable piece is moved by the snap action operation in the direction opposite to the moving direction of the operating body in association with the reciprocating movement of the operating body, and the movable contact provided on the movable piece is provided on the fixed piece. It relates to a double-pole double-throw switch structure that contacts and separates from a fixed contact.

[0002]

[Prior Art]

 As a conventional switch structure of this type, there is one disclosed in Japanese Patent Application No. 2-35141. In this switch structure, as shown in FIG. 12, the snap action device 41 that controls the reversing operation of the movable piece 40 is operated by the engaging groove portions 45 and 46 of the spring receivers 43 and 44 on the left and right of the operating body 42, respectively. It is rotatably supported by a bridge between locking pieces 47 and 48 of the body 42 and the movable piece 40, and the state is maintained by the tension of the coil spring 49. As shown in FIG. 13, the spring receivers 43 and 44 of the snap action device 41 are composed of a plurality of body portions 50 and 51 that are movably engaged with each other in the direction of arrow a and head portions 52 and 53 at both ends. A coiled spring 49 is externally fitted to the body portions 50 and 51 in a state in which 50 and 51 are meshed with each other, and the head portions 52 and 53 are biased in a direction to move them away from each other.

[0003]

[Problems to be solved by the device]

 However, with the above configuration, the snap action device 41 is disassembled at the time of assembling and the assemblability is not good, and after the assembling, there is rattling of the spring receivers 43 and 44. There is a problem in that there is a change in the characteristics due to contact.

The present invention solves the above-mentioned problems, and the purpose thereof is to eliminate the loosening at the time of assembling the snap action device, to improve the assembling property, and after the assembling, Another object of the present invention is to provide a switch structure in which there is no rattling of the spring receiver, and variations in characteristics due to this rattling can be eliminated.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a movable piece which is linked to the reciprocating movement of an operating body and which reversely moves by a snap action operation in a direction opposite to the moving direction of the operating body. In a double-pole double-throw switch structure in which the movable contact that is provided comes in contact with and separates from the fixed contact that is provided on the fixed piece, the operating body and the movable piece are provided with engaging portions for fulcrums, and A spring receiving member having one of the locking groove portion, the spring fitting portion and the rod portion, and the other spring receiving member having the locking groove portion, the spring fitting portion and the rod insertion hole. One end of the coiled spring is fitted and locked in the spring fitting part of the spring receiver, the rod part of one spring receiver is inserted into the rod insertion hole of the other spring receiver, and the other spring receiver is inserted. The other end of the coiled spring is fitted and locked in the spring fitting part of the body. Move the snap action device with the operating body by engaging the engaging groove of the spring receiving body with the engaging portion of the operating body, and with the engaging groove of the other spring receiving body with the engaging portion of the movable piece. It is characterized by being placed between the pieces.

[0006]

[Action]

 With this configuration, the snap action device is prevented from being loosened during assembly and the assemblability is improved. After the assembly, there is no rattling of the spring receiver, and the fluctuation of the characteristics due to the rattling is eliminated. be able to.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view of a switch structure according to the present invention. In this figure, 10 is a base, on which a manipulator 11 that reciprocates in the direction of arrow A1-A2 and a return spring 12 that biases the manipulator 11 in the direction of arrow A2. , The movable piece 13 through which the operating body 11 penetrates, and the four fixed pieces 14a, 14b, 14c, 14d located on both sides of the operating body 11 with the movable piece 13 in between, and the fixed pieces 14a, 14b, 14c. , 14d are provided with terminal screws 15a, 15b, 15c, 15d for electrically connecting lead wires (not shown).

A pair of left and right snap action devices 16a and 16b are provided between the operation body 11 and the movable piece 13, and movable contacts 17a and 17b having a double-sided protruding structure are fixed to both ends of the movable piece 13. Fixed contacts 18a, 18b, 18c, 18d to / from which movable contacts 17a, 17b come into contact with are attached to the pieces 14a, 14b, 14c, 14d, respectively.

Recesses 31a and 31b are formed on both sides of the operating body 11, and engaging portions for fulcrums, that is, locking pieces 19 having a triangular convex shape are formed in the central portions of these recesses 31a and 31b. Further, the operating body through hole 20 of the movable piece 13 is formed with a fulcrum engaging portion corresponding to the locking piece 19, that is, a triangular convex locking piece 21.

As shown in FIG. 5, the snap action devices 16 a and 16 b each include a male spring receiver 23, a female spring receiver 24, and a coil spring 25. As shown in FIGS. 6 to 8, the male spring receiving body 23 is provided with a spring receiving main body 26. The spring receiving main body 26 has a square shape on the front surface. A substantially V-shaped locking groove portion 27 is formed, and a cylindrical spring fitting portion 28 is formed at the center of the inner surface of the spring receiving portion main body 26. A portion other than the spring fitting portion 28 is formed as a spring receiving portion 29, and a rod portion 30 having a rectangular cross section is provided at the center of the spring fitting portion 28 so as to project. The diameter D of the spring fitting portion 28 is substantially equal to the inner diameter d of the coil spring 25.

As shown in FIGS. 9 to 11, the female spring receiving body 24 is provided with a spring receiving main body 31, and the spring receiving main body 31 has a square shape on the front surface. Is formed with a substantially V-shaped locking groove portion 32, and a cylindrical spring fitting portion 33 is formed at the center of the inner surface of the spring receiving portion main body 31. The inner surface portion of the spring receiving portion main body 31 is formed. The portion other than the spring fitting portion 33 is formed in the spring receiving portion 34, and a shaft portion 35 having a circular cross section is projectingly provided at the central portion of the spring fitting portion 33. A rod insertion hole 36 is formed from the end surface to the outer surface portion of the spring receiving main body 31, and the rod insertion hole 36 has a rectangular cross section. The diameter D of the spring fitting portion 33 is substantially equal to the inner diameter d of the coil spring 25.

Then, one end of the coiled spring 25 is fitted and locked to the spring fitting portion 33 of the female spring receiver 24, and the male spring receiver is inserted into the rod insertion hole 36 of the female spring receiver 24. The snap action devices 16a and 16b are assembled by inserting the rod portion of the body 23 and fitting and locking the other end portion of the coiled spring 25 into the spring fitting portion 28 of the male spring receiver 23. It

Then, the snap action devices 16a and 16b compress the coil spring 25 to urge the female and male side spring receivers 24 and 23 in a direction to move them away from each other, and to operate the fulcrum for the fulcrum of the operating body 11. The engaging groove portion 32 of the female spring receiver 24 is engaged with the engagement portion, that is, the triangular convex engaging piece 19, and the engaging portion for the fulcrum of the operating body through hole 20 of the movable piece 13, that is, the triangular shape. The male locking groove 27 is locked to the convex locking piece 21 and is arranged between the operating body 11 and the movable piece 13. In FIG. 2, the left and right snap action devices 16a and 16b are tilted symmetrically in an octagonal shape, biasing the movable piece 13 in the direction of arrow A1 and moving the movable contacts 17a and 17b to the normally closed fixed contacts 18a and 18b. Abutting against. That is, the terminal screws 15a and 15b are electrically connected, and the terminal screws 15c and 15d are not electrically connected.

Next, the operation will be described. When the upper end of the operating body 11 protruding above the base 10 is pushed in the direction of the arrow A1, the distance between the locking piece 19 and the locking piece 21 decreases. The female and male side spring receivers 24 and 23 rotate about the locking pieces 19 and 21 as fulcrums, and approach each other against the coil spring 25. When the coiled spring 25 passes through its dead center, that is, when the male side spring receiver 23 is displaced even a little below the horizontal plane including the locking piece 21 of the movable piece 13, the coiled spring 25 is suddenly moved. As the movable piece 13 extends, the movable piece 13 reversely moves in a direction opposite to the moving direction of the operating body 11, that is, in the direction of arrow A2 by a snap action operation, and the movable contacts 17a and 17b are fixed contact 18c on the normally closed side as shown in FIG. The fixed contacts 18a and 18b on the normally open side are switched from 18d. That is, the terminal screws 15a and 15b are non-conductive, and the terminal screws 15c and 15d are conductive.

Since the coiled spring 25 is weaker than the return spring 12, when the pushing force in the direction of the arrow A1 to the operating body 11 is released in the state of FIG. 4, the movable contacts 17a and 17b are moved by the reverse snap action. It separates from the fixed contacts 18c and 18d and contacts the fixed contacts 18a and 18b, and the stopper surface 11a of the operating body 11 is received by the inner surface 10a of the base 10 and between the movable contacts 17a and 17b and the fixed contacts 18a and 18b. The contact pressure is maintained.

[0016]

[Effect of the device]

 As described above, according to the present invention, the operation body and the movable piece are each formed with a fulcrum engagement portion, and the snap action device is provided with one spring having a locking groove portion, a spring fitting portion, and a rod portion. It is provided with a receiving body and the other spring receiving body having a locking groove portion, a spring fitting portion, and a rod insertion hole, and one end of the coiled spring is fitted and locked in the spring fitting portion of one spring receiving body. Then, insert the rod part of one spring receiver into the rod insertion hole of the other spring receiver, and fit the other end of the coiled spring into the spring fitting part of the other spring receiver. The engagement groove of one spring receiver is engaged with the engaging portion of the operating body, and the engagement groove of the other spring receiver is engaged with the engaging portion of the movable piece to form a snap action device. Since it is placed between the operating body and the movable piece, there is no looseness when assembling the snap action device, and it is easy to assemble. It becomes good, after assembly, no rattling of the spring receptacle, it is possible to eliminate variations in characteristics due to the backlash.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a switch structure according to the present invention.

FIG. 2 is a front view showing a partial cross-section of a main part of the switch structure.

FIG. 3 is a cross-sectional view taken along the line BB of FIG.

FIG. 4 is an operation diagram of a main part of a switch structure.

FIG. 5 is a partial cross-sectional plan view of the snap action device.

FIG. 6 is a plan view of a male spring receiver of the snap action device.

FIG. 7 is an arrow view from the direction of FIG. 6C.

FIG. 8 is a view from the direction of FIG. 6G.

FIG. 9 is a plan view of a female spring receiver of the snap action device.

FIG. 10 is a view from the direction of FIG. 9E.

FIG. 11 is an arrow view from the direction of FIG. 9F.

FIG. 12 is a partially sectional front view of a main part of a conventional switch structure.

FIG. 13 is a perspective view of an exploded state of a spring receiver in the trunk switch structure.

[Explanation of symbols]

 11 Manipulator 13 Movable Pieces 16a, 16b Snap Action Device 23 Male-side Spring Receptor 24 Female-side Spring Receptor 27, 32 Locking Groove 28, 33 Spring Fitting Part 30 Rod Part 36 Rod Insertion Hole

Claims (1)

[Scope of utility model registration request] 1. A movable piece, which is linked to the reciprocating movement of an operating body and is reversed by a snap action operation in a direction opposite to the moving direction of the operating body, wherein a movable contact provided on the movable piece is a fixed piece. In the double-pole double-throw switch structure that comes in contact with and separates from the fixed contact provided in the, the operating body and the movable piece are formed with fulcrum engaging portions respectively, and the snap action device is fitted with the engaging groove portion and the spring fitting. One spring receiver having a spring portion and a rod portion, and the other spring receiver having a locking groove portion, a spring fitting portion, and a rod insertion hole, and the spring fitting portion of the one spring receiver has a coil. One end of the spring-shaped spring is fitted and locked, the rod part of one spring receiver is inserted into the rod insertion hole of the other spring receiver, and the coil-shaped spring The other end is fitted and locked, and one spring receiver is attached to the engaging part of the operating body. The engaging groove portion of the movable piece is engaged with the engaging groove portion of the other spring receiving body, and the snap action device is arranged between the operating body and the movable piece. Switch structure.