JPH037849Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates in particular to improvements in the long key mounting structure of push button switches used in various input devices such as personal computers and word processors.

(Prior Art) As shown in FIG. 5, the conventional mounting structure for this type of long and large key is to fix a plurality of push button switch bodies 2 vertically and horizontally on a printed circuit board 1, and to attach internal contacts ( A stem 3 with a fitting groove 3a for connecting and separating the switch (not shown) is provided so as to be movable up and down, while a fixing hole 5 is bored in the vicinity of each switch body 2 of the panel board 4 disposed above the printed circuit board 1. , the bearing part 6 is firmly fixed to the fixing tool 5, and the bearing part 6 has a bent part 7 whose both ends are bent inwardly.
The center portion of the U-shaped lever 7 having the levers 7a and 7a is pivotally connected.

Further, the key top 8 has fitting protrusions 8b formed on both sides of its lower part with the fitting parts 8a in the center, and the protrusions 9a of the support member 9 are fitted into the respective fitting parts 8a. The bent portions 7a of the lever 7 are engaged in the engagement grooves 9b separately formed in the key top 9, and the fitting protrusions 8b of the key top 8 are fitted into the fitting grooves 3a of the stem 3. The structure is such that a long key can be attached.

(Problems to be Solved by the Invention) However, the above conventional structure requires two bearings 6 and two supporting members 9 in addition to the key top 8, switch body 2, and lever 7, which naturally reduces the number of parts. Not only does this increase in number and lead to higher costs, but
There was a problem in that the work of attaching and removing the key top 8 was extremely complicated.

Moreover, the need for two supporting members 9 means that
A dead space is formed within the key top 8,
This also brings about the problem that only one push button switch body 2 can be arranged for one key top 8.

Furthermore, when removing the key top 8, since the bearing portion 6 is firmly fixed to the fixing hole 5 of the panel board 4 as described above, the key top 8 can be removed from the stem 3.
Even if the lever 7 is pulled out from the bearing part 6
Since the key top 8 remains pivotally attached to the key top 8, there is a problem in that the key top 8 itself cannot be reset to a desired location.

(Means for Solving the Problems) The present invention was developed to effectively solve the problems of the conventional mounting structure described above. However, assuming a structure in which a long key top is attached to any switch body in the push button switch body, an engaging portion is provided protruding from each orthogonal side wall of each push button switch body, and a lever exhibiting a U-shape is provided on the other key top. The lever is configured to support the bent portions at both ends of the lever, and to slidably insert the center portion of the lever into the corresponding engaging portion of the adjacent push button switch body.

(Function) Therefore, in the present invention, after the lever is supported on the long key top, the lever is inserted into the engaging portion protruding from the side wall of the adjacent push button switch body, By simply attaching the key top to the desired push button switch body, the secure installation and smooth operation of the long key top can be guaranteed, and if the need arises to change the installation position of the long key top, etc. Since the key top can be easily removed together with the lever, the mounting position can be easily changed by attaching the key top to the push button switch body at the location to be changed in the same condition as above.

(Embodiment) The present invention will be described in detail below based on an illustrative embodiment.The mounting structure according to the embodiment also includes a push button switch body 1 fixed vertically and horizontally on a printed circuit board 11.
2, a stem 13 provided on the main body 12, and a fitting protrusion 1 that fits into the fitting groove 13a of the stem 13.
8b and the key top 1
The mounting structure is similar to the conventional mounting structure in that it includes a U-shaped lever 17 that facilitates the movement of the lever 8, but the feature is that the lever 17 is arranged regularly in the vertical and horizontal directions of the printed circuit board 11, as shown in FIG. An engaging portion 20 for slidably inserting the central portion of the lever 17 into the orthogonal side walls of each switch body 12 having a rectangular cross section.
are provided integrally in a protruding manner, and insertion holes 21 are formed on both sides of the key top 18 to receive the bent portions 17a, 17a at both ends of the lever 17, respectively.

The engaging portion 20 has an upper piece 20 that extends outward in parallel on the panel substrate 14 as shown in the figure.
a and a lower piece 20b, the upper and lower pieces 20a, 2
The configuration is such that the center portion of the lever 17 can be inserted into the space defined between 0b.

Therefore, when installing a long key under such a configuration, first insert the insertion holes 2 on both sides of the key top 18.
After each bent portion 17a of the lever 17 is inserted into the inside of each of the levers 1 and 21, and the lever 17 is rotatably supported directly on the key top 18, the lever 17 is inserted into the adjacent push button switch body as shown in FIG. Obtaining a state where it is inserted into the engaging part 20 protruding from the side wall of 12,
By fitting the fitting protrusion 18b of the key top 18 into the fitting groove 13a of the stem 13, it becomes possible to attach it extremely easily.

Then, when you press down key top 18,
As shown in FIG. 3, the lever 17 slides toward the back inside the engaging portion 20 in conjunction with the pressing operation to allow the key top 18 to descend, thereby making it possible to operate the switch reliably.

In addition, if it becomes necessary to change the mounting position of the long key top 18 installed in such a state, for example from the state shown in FIG. 4A to the state shown in FIG. Switch body 12
Since the key top 18 can be easily removed together with the lever 17 by pulling out the key top 18 from the stem 13 of the switch, the removed key top 18 can be attached to the stem 1 of the desired push button switch body 12 at the change location.
3, if they are fitted in the same state as above, the mounting position can be easily changed.

Moreover, since each push button switch main body 12 has engaging parts 20 formed on two orthogonal sides of its four side walls, the key top 18 can be attached by appropriately selecting the engaging parts 20 on the two sides. The position can be changed in any condition.

Furthermore, in this embodiment, the bent portion 17a of the lever 17 is directly supported in the insertion hole 21 of the key top 18 without using a conventional support member, so that the dead space within the key top 18 is eliminated. Therefore, it is possible to arrange two push button switch bodies 12 inside. Therefore, when the long key tops 18 are removed, small square key tops can be independently attached to each push button switch body 12 and used as individual keys.

In the above embodiment, two push button switch bodies 12 are arranged on the bottom surface of the long key top 18, but the number of push button switch bodies 12 is not limited to two, but three or more can be arranged on the bottom surface of the long key top 18. It may be something that has been placed. Also, long key top 18
It is also possible to provide two or more fitting protrusions 18b, fit the fitting protrusions 18b into the fitting grooves 13a of the stem 13, and press two or more stems 13 at the same time.

(Effects of the invention) As described above, the present invention forms an engaging part on the side wall of each pushbutton switch body regularly arranged in the vertical and horizontal directions of the board, and a bent part is supported by the key top in the engaging part. Since the lever is characterized by inserting the central part of the lever, it does not require two bearings that pivot the central part of the lever and two supporting members that support the bent parts at both ends of the lever. Since it is completely unnecessary, the number of parts can be greatly reduced, which can greatly contribute to lower costs.

Moreover, the structure in which the central part of the lever supported by the bent part of the key top is slidably inserted into the engaging part of the adjacent push button switch body makes it extremely easy to attach and remove a long key top. .

Furthermore, since the push button switch body according to the present invention has engaging portions protruding from each of its orthogonal side walls, by appropriately selecting the two engaging portions,
Since the long key top can be freely attached to the push button switch body at a desired position, it has become possible for the first time to change the attachment position of the key top, something that could not be expected with the conventional structure.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the main parts of the mounting structure according to the embodiment of the present invention, Fig. 2 is a side view of the main parts showing the same mounting state, and Fig. 3 is the main parts showing the key top in the depressed state. The side view and FIGS. 4A and 4B are explanatory diagrams showing examples of changes in the mounting position of the key top, and FIG. 5 is an exploded perspective view showing the conventional mounting structure. 11... Printed circuit board, 12... Push button switch body, 13... Stem, 13a... Fitting groove, 17
... Lever, 18 ... Key top, 20 ... Engagement portion, 21 ... Engagement hole.

Claims (1)

[Scope of utility model registration request] In a structure in which push button switch bodies are arranged regularly in the length and breadth of a board, and a long key top is attached to any switch body among the push button switch bodies, engaging portions are provided protruding from each orthogonal side wall of each of the push button switch bodies. A push-button switch is characterized in that the key top supports bent portions at both ends of a U-shaped lever, and the central portion of the lever is slidably inserted into a corresponding engaging portion of an adjacent push-button switch body. Mounting structure for long keys.