JPS6343697Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a switch device using a leaf switch, and particularly to a switch device that is capable of simultaneously operating a plurality of leaf switches and transmitting a plurality of different signals. Regarding.

[Prior art]

For example, in a telephone, the switch, which is activated in conjunction with the raising and lowering of the handset, connects and disconnects the communication circuit to the telephone line, and is particularly required to be highly reliable in its operation. It is also necessary to take measures to prevent moisture. On the other hand, due to the demands for smaller and lighter telephones, it is desirable to make this switch smaller and thinner, and to deal with constraints such as installation space and location. There is a need to improve assembly efficiency through a simple configuration with a small number of overall parts, as well as to reduce costs. However, all of the conventionally known switch switches have their advantages and disadvantages, and no one has yet been proposed that can satisfy all of the above-mentioned requirements.

In particular, as telephones have become more multi-functional in recent years, there has been a demand for an increase in the number of contacts opened and closed by the above-mentioned switch and a diversification of their types.
For example, if your phone is equipped with a so-called on-hook dialing function, in which you dial with the handset left in place, and then raise the handset when the other party picks up, the telephone circuit is disconnected when the handset is raised or lowered. In order to avoid such problems, it is necessary to attach a transfer contact or the like to the switch, one of which is closed.

Therefore, it is not possible to simply combine the transfer contacts as described above and a plurality of leaf switches that constitute normally used make contacts, break contacts, etc. to form a hook switch.
This results in the complication of the operating mechanism and the increase in the overall size, so it is necessary to take these points into account and construct a switch that can satisfy the demands for a simpler and thinner structure. is desired. In this case, regardless of the difference in the type or number of contacts, it is possible to share each part as much as possible, and to facilitate parts management and assembly, thereby achieving versatility. There is also a need for such a configuration.

Further, such a problem is not limited to the above-mentioned hook switch, but is required for switch devices used in equipment and devices used in various fields.

[Summary of the idea]

The present invention was developed in view of the above-mentioned circumstances, and includes a holder in which a group of leaf switches are arranged in parallel on a holder, and a cover covering the movable side of the holder can be swung within a predetermined angle range. pivoted to,
And, with a simple configuration in which a spring that biases the cover in one direction is interposed between the holder and the holder,
In addition to reducing the overall size and thickness, the leaf switch group is dust-proofed with a cover that also functions as a switch actuator, improving operational reliability, reducing the number of parts, and improving ease of assembly. It is an object of the present invention to provide a switch device with excellent versatility, which can improve the performance and further reduce costs.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

1 to 4 show an embodiment of a switch device according to the present invention, and in this embodiment, a case where this switch device is applied to a telephone switch will be explained.

In these figures, the switch device, which is designated as a whole by the reference numeral 10, has side wall portions 11a and 11 on both sides thereof.
A holder 11 made of synthetic resin and formed into a substantially flat plate shape having an angle b, a plurality of leaf switches 12 arranged in parallel to this holder 11, and a hollow portion 13 that accommodates the movable side of the leaf switch group 12. a cover 14 whose open end side is pivotally attached to the holder 11 side, and springs 15, 15 that bias this cover 14 in a direction to separate it on the holder 11.
a, 15b.

The leaf switch 12 is shown in FIGS.
As shown in the figure, it has a movable leaf contact piece 16 and at least one fixed leaf contact piece 17, 18 (two pieces in this example) extending in parallel with each other,
The base end portions of both leaf contact pieces 16, 17, and 18 are buried and held by an insulating base 19 at a predetermined interval. Each leaf contact piece 16, 17, 18 extends from the other end of this insulating base 19.
The rear end serves as a connection end to a wiring circuit (not shown) on a printed wiring board, which is indicated by the reference numeral 20 in the figure, and in this embodiment, each of these leaf contacts 1
6, 17, 18 each lead end 16a, 17a, 1
8a is shown bent at a right angle to the holder 11 side at predetermined intervals. In addition, 21 in the figure
is an actuator provided at the movable end of the movable leaf contact piece 16, 16b, 17b, and 18b are contacts of each leaf contact piece, and on both sides of the insulating base 19 there is an engaging element on the holder 11 side, which will be described later. Its upper end side projects outward as an engaging part that is locked to the stop part, and
A locking projection 22 (one not shown) is provided with a tapered surface whose projection amount decreases sequentially, and a pair of positioning pins 23a, 2 are provided on the bottom surface of the locking projection 22 (one not shown).
3b is provided protrudingly.

Here, the leaf switch 12 having such a configuration is a so-called so-called leaf switch in which the contact pieces 16, 17, and 18 are fitted into a mold, and the insulating base 19 and the actuator 21 are integrally formed from a synthetic resin material. It can be easily formed by insert molding, and has the advantage that the relationship between each contact point is maintained appropriately and does not require adjustment, and its practical effects are great. The illustrated leaf switch 12 is an example of a so-called transfer contact using two fixed leaf contact pieces 17 and 18, but there are also types of contacts with different opening/closing relationships, make contacts,
It will be readily appreciated that what constitutes a break contact can be similarly formed.

On the other hand, as shown in FIG. 1, the holder 11 has a holding part 30 for the leaf switch group 12 formed by locking pieces 31 to 35 arranged in parallel at a predetermined interval on one end side. Prepare, thereby 4
It is configured such that it can fit and hold two leaf switches 12. And each of the locking pieces 31 to 35
A guide groove 36 into which the insulating base 19 of the leaf switch 12 is fitted from above the holder 11 is formed on the opposing sliding surface of the holder 11, and the locking protrusion 22 is engaged at a predetermined interval from the upper edge of the guide groove 36. A locking groove 37 is formed as a locking portion. Also,
Holes 38a and 38b into which the positioning pins 23a and 23b on the bottom of the insulating base 19 are inserted are bored at the bottom between each of these locking pieces 31 to 35, and holes 38a and 38b are formed at the rear of these holding parts 30. Holder 11
One end has a through groove 3 into which the lead ends 16a, 17a, 18a of each leaf switch 12 are inserted.
9a, 39b, and 39c are bored.

Further, on the outer surfaces of the outer locking pieces 31 and 35 located on both sides of the holder 11, a pair of boss portions 40a and 40 to which the cover 14 is pivotally attached are provided.
b is bored, and its tip is connected to the side wall portions 11a, 1
It faces the inner surface of 1b at a predetermined distance. Furthermore, the rearwardly extending portions of these outer locking pieces 31 and 35 are provided with spring hook portions 41a and 41b that project laterally, respectively, and lock one end of the springs 15a and 15b. It is configured as follows.

Further, on the other end side of this holder 11, as shown in FIGS. 1 to 4, side wall portions 11a, 1
A pair of stopper pieces 42 erected upward from 1b
a, 42b are provided, and a stopper groove 44a is provided on the inner surface of the distal end side of the stopper groove 44a for regulating the amount of rotation of the movable end side of the cover 14 in cooperation with a step portion 43 provided upright on the other end edge of the holder 11. , 44b are formed. Incidentally, reference numeral 45 in the figure represents a locking protrusion that protrudes from the bottom of the holder 11 and performs positioning and temporary fixing to the printed wiring board 20.

On the other hand, the cover 14 has a hollow portion 13 therein which accommodates the movable side of the leaf switch group 12, as shown in FIGS. 1 to 4.
This hollow part 13 is opened at one end side, and
The entire hollow part 13, including the hollow part 13, is formed so as to gradually become sharp toward the other end, and its upper and lower surfaces are inclined. A movable piece 51 that receives the pressing force from the member 50 is integrally provided.
Further, the open end side of both side surfaces of the cover 14 extends rearward, and a boss portion 40 on the side of the holder 11
Pivot parts 53a and 53b are formed having shaft holes 52a and 52b into which the springs 15a and 40b are engaged, and the other ends of the springs 15a and 15b are engaged with the upper ends of the longitudinal centers of these side parts. Spring hook portions 54a and 54b are provided to be stopped. Further, on both side surfaces of the cover 14 on the movable end side, stopper grooves 44a on the holder 11 side,
Stopper pins 55a and 55b facing into 44b are integrally provided in a protruding manner. In addition, 56a, 56 in the figure
b, 56c are partition walls that partition the hollow portion 13 in this cover 14 corresponding to each leaf switch 12, and also function as ribs to ensure the strength of this cover 14, which is integrally formed of synthetic resin material. It is something. It is also clear that the actuator 21 of each of the leaf switches 12 engages with the tip of the hollow portion 13 of the cover 14 and is swung in response to the swiveling motion thereof.

And, the switch device 1 with such a configuration
0 is simply and properly assembled as follows.

First, the insulating base 19 of the leaf switch 12 is fitted into the holding part 30 provided at one end of the holder 11 so as to be positioned between the locking pieces 31 to 35, and the leads thereof are fixed. end 16
a, 17a, and 18a are inserted into the bottom side of the holder 11 and passed through. Here, the number and type of leaf switches 12 fixed to this holding part 30 are set according to the required functions on the main equipment side.
In the case of the holding portion 30 having four fitting portions as in this embodiment, it is preferable to attach any number of fitting portions within the range of one to four. The holder 1 has leaf switch groups 12 arranged side by side in this way.
1, the cover 14 is tilted and assembled from above so that the movable side of each leaf switch 12 is accommodated in its hollow part 13, and its shaft holes 52a, 52b are assembled from above.
It is preferable to engage the boss portions 40a, 40b on the holder 11 side using elasticity to establish a pivoted state. At this time, the stopper pins 55a and 55b on the cover 14 side are inserted into the stopper groove 44 on the holder 11 side.
Care must be taken to ensure that the image faces inside a and 44b. Next, between the holder 11 and the cover 14, the spring hooks 41a, 54a, 41b,
When springs 15a and 15b are hooked to 54b, the switch device 10 as shown in FIGS. 1 and 2 is completed.

Moreover, according to such a switch device 10,
By moving the cover 14 using a hook button or the like, a plurality of leaf switches 12 can be actuated simultaneously in one operation, and for example, a plurality of different signals can be sent out, which has a great practical effect.

According to such a switch device 10, as shown in FIGS. 2 and 4, a plurality of leaf switches 12 and a cover 14 that accommodates the movable side thereof are assembled on the holder 11 in substantially parallel manner. This makes it possible to reduce the overall size and thickness of the leaf switch group 12, and since the movable side of the leaf switch group 12 is covered by the cover 14, which also functions as a switch actuator of the leaf switch group 12, its dustproof property is improved. It is possible to improve the reliability of operation by obtaining the same characteristics, and there are no total number of parts, and the structure is simple and easy to assemble, and it can also be effective in reducing costs. It is.

Further, in such a switch device 10, each leaf switch 12 can be opened and closed appropriately even though the movable stroke by the cover 14 is small, and moreover, the movable piece 5 of this cover 14
It is now possible to bring the hook button into direct contact with the hook button 1, eliminating the need for a troublesome rolling element as in the past, and the effect of using it as a hook switch is great.

Further, according to the switch device 10 described above, the locking piece 3 constituting the holding portion 30 provided on the holder 11
Any leaf switch 12 can be removably fitted and fixed between 1 and 35, and not only can the assembly work be performed easily and appropriately, but also the specifications can be easily changed according to the requirements of the main equipment. It is possible to deal with this problem and is advantageous from a practical point of view. Furthermore, as mentioned above, the leaf switch 12 for four pieces is used as the holder 11.
By preparing devices that can be attached to leaf switches 12 and attaching the required number and type of leaf switches 12, it is possible to share parts, improve assembly ease and the effort involved in parts management, and increase the number of leaf switches 12 that can be installed. There is also the advantage of having sex.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as necessary. For example, the number and types of leaf switches used in the leaf switch group 12 are determined as necessary, and the holder 11 and cover 14 may be modified accordingly. In addition, the insulating base 19 of the leaf switch 12 and the locking piece 3 on the holder 11 side
The locking structure between 1 to 35, the pivoting structure between the holder 11 and the cover 14, and the structure for regulating the amount of rotation of the cover 14 on the holder 11 are not limited to the embodiments.
Various modifications are possible.

Furthermore, the springs 15, 15a, 15b interposed between the holder 11 and the cover 14 are not limited to tension springs as shown in the embodiments, but are, for example, plate springs or compression springs between the lower surface of the cover 14 and the upper surface of the holder 11. The spring may be interposed either integrally or separately, and various other modifications are possible.

Furthermore, when attaching the above-described switch device 10 to the printed wiring board 20, etc., the bottom part of the holder 11 is not limited to being placed on the board as in the embodiment, but the holder 11 is placed upright on the board. Variations such as doing this are also possible. At this time, the lead ends from each leaf switch 12 may be extended without being bent and fixed onto the board by soldering or the like.

Furthermore, it will be easily understood that the switch device 10 according to the present invention is not limited to the above-mentioned telephone switch, but can also be used as a switch for devices and devices used in various fields.

[Effect of idea]

As explained above, according to the switch device according to the present invention, a cover is provided that covers the movable side of the leaf switch group arranged in parallel on the holder, performs a dustproof function, and also functions as a switch actuator. The holder is pivotally attached to the holder so that it can swing within a predetermined angle range, and a spring is inserted to bias it in one direction, resulting in a simple configuration with a small number of parts. It has great practical effects, such as being able to achieve smaller size and thinner profile, improved assembly efficiency, reduced costs, and excellent operational reliability and versatility.

[Brief explanation of the drawing]

The figures show an embodiment of the switch device according to the present invention, in which Fig. 1 is a partially exploded plan view showing the overall general configuration, Fig. 2 is a side view, and Fig. 3 is an assembly thereof. An exploded view showing the order, and FIG. 4 is a sectional view of the main part. 10...Switch device, 11...Holder, 12
...Leaf switch (leaf switch group), 13
... Hollow part, 14 ... Cover, 15 ... Spring, 16 ... Movable leaf contact piece, 17, 18 ...
Fixed side leaf contact piece, 19... Insulation base, 20...
Printed wiring board, 21... Actuator, 22... Locking protrusion, 30... Holding section, 31-35... Locking piece, 36... Guide groove, 37... Locking groove, 40
a, 40b...Boss part, 41a, 41b...Spring hook part, 43...Step part, 44a, 44b...Stopper groove, 51...Movable piece, 52a, 52b...
Shaft hole, 54a, 54b... Spring hook part, 55
a, 55b...stopapin.

Claims (1)

[Scope of utility model registration request] A plurality of leaf switches consisting of a movable leaf contact piece and at least one fixed leaf contact piece whose base ends are held by an insulating base and extend parallel to each other, and a group of these leaf switches are mounted on the leaf switch group. A holder having a substantially flat plate shape and having a holding portion on one end side that is arranged parallel to each other on a side surface and holding an insulating base of each leaf switch, and an open end that accommodates the movable side of the leaf switch group. a cover having a hollow portion and whose open end side is pivotally attached to one end side of the holder; a spring is interposed between the cover and the holder to bias the cover in a direction to move the cover away from the holder; A switch device characterized in that a stopper for regulating the amount of rotation of the cover is provided integrally with the holder.