JPH0743883Y2 - Push button assembly structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a push button assembly structure, and more specifically, a circle for operating a push switch used in an electronic device. The present invention relates to a columnar push button assembly structure.

(Prior Art) A push switch used in an electronic device or the like is performed via push buttons 2 and 2 assembled in button insertion holes 1a and 1a of a device housing 1 as shown in FIG. Push button 2,2
Has a columnar shape, and has display surfaces 2a, 2a displaying the function of the push switch on its end surface. Further, projections 2b and 2b are provided on the peripheral surfaces of the push buttons 2 and 2.

On the other hand, notches are formed in the opening peripheral edge portions 1b, 1b of the button insertion holes 1a, 1a.
1c, 1c are formed, and the projections 2b, 2b mentioned above constitute positioning means A, A, respectively. Then, the push buttons 2 and 2 are inserted into the button insertion holes 1a and 1a, the locking portions 2c and 2c of the push buttons 2 and 2 are brought into contact with the opening peripheral portions 1b and 1b, and the positioning means A and A are provided. The display surfaces 2a, 2a are fitted with each other and the display directions of the display surfaces 2a, 2a are aligned, and the push buttons 2, 2 are prevented from rotating after being assembled, and the push buttons 2, 2 are slid with respect to the device housing 1. I was operating the push switch.

(Problems to be Solved by the Invention) By the way, a plurality of push buttons 2 having the same shape and size are arranged in a telephone. Therefore, the individual pushbuttons 2 can be assembled in all the button insertion holes 1a, respectively, and therefore, the pushbuttons 2 can be installed in the device housing in a state where the function of the pushswitch does not match the display on the display surface 2a. There was a risk that it would be assembled into 1.

For that purpose, the push buttons 2 must be assembled while checking them one by one, which makes the work extremely complicated.

In view of the above situation, an object of the present invention is to provide a push button assembling structure that allows only the push button corresponding to the button insertion hole to be assembled.

[Structure of the Invention] (Means for Solving the Problems) In the present invention, a plurality of column-shaped push buttons each having a flange-shaped locking portion at one end are provided in corresponding button insertion holes of the device housing. Positioning that is inserted in each of the push buttons and the cylindrical guide rib formed on the peripheral edge of the opening of the button insertion hole, and that has common irregularities and is formed in one direction of the device housing. In the assembly structure of the push button in which the locking portion is brought into contact with the end surface of the guide rib in a state in which the direction of the push button is defined by fitting the means, in a part of the peripheral edge of each locking portion, A concave portion or a convex portion formed in a portion having a unique central angle with respect to the position of the positioning means, and a portion corresponding to the concave portion or the convex portion of the corresponding push button in the peripheral portion of each guide rib. of When a push button corresponding to each of the button insertion holes is inserted, the protrusion is provided from a portion corresponding to the non-existing portion. While allowing the engaging portion to contact the end surface of the guide rib through the engaging portion, the engaging portion engages with the engaging portion or the convex portion when a non-compliant push button is inserted into the button insertion hole. And a protrusion that prevents the locking portion from coming into contact with the end face of the guide rib.

(Operation) According to the push button assembling structure according to the present invention, the engaging portion of the push button and the end face of the guide rib are brought into contact with each other only when the push button corresponding to the button insertion hole is assembled.

(Embodiment) FIG. 1 shows an assembly structure of a push button according to the present invention, and illustrates a case of a cylindrical push button for operating three different types of push switches in a telephone. There is.

These push buttons 11, 12, 13 have locking portions 11a, 12a, 13 at one end.
a and display surfaces 11b, 12b, 13b at the other end,
Functions of push switches (not shown) are displayed on b, 12b, and 13b, respectively. Also, the pushbuttons 11, 12, and 13
11c, 12c, 13c, protrusions 14, 14, 14 common to the three push buttons 11, 12, 13 are formed, the protrusions 14, 14,
14 are arranged above the display on the display surfaces 11b, 12b, 13b, respectively. The locking parts 11a, 12a, 13a are formed in a brim shape, and are recessed at unique positions with respect to the three push buttons 11, 12, 13.
It has 11d, 12d, and 13d. For example, in FIG. 1, the push button 11 is set at 3 o'clock and 6 o'clock on the basis of the protruding portion 14.
Push button 12 at 3 o'clock and 9 o'clock on the clock,
The push buttons 13 are arranged at the 6 o'clock and 9 o'clock positions respectively.

On the other hand, the device housing 20 is provided with button insertion holes 21, 22, and 23 corresponding to the push buttons 11, 12, and 13, respectively. The button insertion holes 21, 22, 23 are provided with cylindrical guide ribs 21a, 22a, 23a at the opening periphery on the back surface of the device housing 20, respectively, and are locked to the free ends of the guide ribs 21a, 22a, 23a. The surfaces 21b, 22b, 23b are formed. Also, the guide rib 21
Notches 24, 24, 24 are formed in the a, 22a, 23a at the positions corresponding to the inner side of the device housing 20, respectively. Notches 24,24,24
Has openings on the locking surfaces 21b, 22b, 23b, and the above-mentioned protrusion 1
Positioning means B, B, B are respectively formed by fitting with 4, 14, 14. Furthermore, the locking surfaces 21b, 22b, 23b have projections 21c, 22 at specific positions with respect to the three button insertion holes 21, 22, 23.
c and 23c are formed. For example, in FIG. 1, the button insertion hole 21 is set at 2 o'clock and 6 o'clock of the watch with reference to the notch 24.
At the hour position, the button insertion hole 22 is provided at the 3 o'clock and 9 o'clock positions of the timepiece, and the button insertion hole 23 is provided at the 6 o'clock and 9 o'clock positions of the timepiece. The recesses 11d, 12d, 13d and the protrusions 21c, 22c, 23c constitute engaging means C, C ', C ", respectively.

The push buttons 11, 12, and 13 are inserted into the button insertion holes 21, 22, and 23 thus configured from the rear surface of the device housing 20, and the locking surface
21b, 22b and 23b are brought into contact with the locking portions 11a, 12a and 13a respectively, and the positioning seeds B, B and B are fitted to the push buttons 11 and 1
Attach 2, 13 to the device housing 20.

At this time, for example, when the push button 11 is inserted into the button insertion holes 22 and 23, the projection 22c and the locking portion 11a at the 9 o'clock position in the button insertion hole 22 and the 9 o'clock position in the button insertion hole 23. The projections 23c of the
Prevent insertion of 11. That is, the push buttons 11, 12, and 13 can be inserted only through the corresponding button insertion holes 21, 22, and 23 by the engaging means C, C ′, and C ″.

FIG. 2 shows a modified example of the push button assembly structure according to the present invention, which also illustrates the case of the same telephone as in FIG.

The assembly structure shown here differs from the previous embodiment only in the engagement means. That is, the push buttons 31 are arranged on the outer circumferences of the locking portions 31a, 32a, 33a at positions unique to the three push buttons 31, 32, 33, for example, with reference to the protrusion 34 of the positioning means D in FIG. Then, convex portions 31d, 32d, 33d are formed at 9 o'clock position of the timepiece, at 6 o'clock position of the push button 32, and at 3 o'clock position of the push button 33, respectively.

On the other hand, a position unique to the three button insertion holes 41, 42, 43 outside the guide ribs 41a, 42a, 43a of the device housing 40,
For example, in FIG. 2, with reference to the notch 44 of the positioning means D, the button insertion hole 41 is located at the 3 o'clock and 6 o'clock positions, and the button insertion hole 42 is located at the 3 o'clock and 9 o'clock positions.
In the button insertion hole 43, protrusions 41c, 42c, 43c are formed at the 6 o'clock and 9 o'clock positions of the timepiece, respectively. The protrusions 41c, 42c, 43c are formed higher than the guide ribs 41a, 42a, 43a, respectively, and the protrusions 31d, 32d, 33d and the engaging means E, E ',
It constitutes E ″.

In this modification, for example, the push button 31 is attached to the button insertion hole 4
If you try to insert it into 2, 43, the button insertion hole 42
The projection 42c at the hour position and the convex portion 31d contact the projection 43c at the 9 o'clock position and the convex portion 31d in the button insertion hole 43, respectively, and prevent the push button 31 from being inserted. That is, the engagement means E, E ′,
By E ″, the push buttons 31, 32, 33 can be inserted only into the corresponding button insertion holes 41, 42, 43.

In the above embodiment, the engaging means C, C ′, C ″ are provided at two places respectively, but the present invention is not limited to this and may be provided at only one place.

Further, in the above-mentioned embodiments and modified examples, three push buttons of the telephone are illustrated, but the present invention does not necessarily have to be a telephone, and the number of push buttons is not limited to three.

Furthermore, in the above-described embodiments and modified examples, both the engaging means on the device housing side are formed by a convex portion, but the engaging means may be formed by forming a concave portion on the device housing side.

Furthermore, in the above-described embodiments and modifications, a cylindrical guide rib is provided on the peripheral edge of the opening of the button insertion hole, and the engaging portion of the push button is brought into contact with the guide rib. However, the present invention is not limited to this. Instead, the engaging portion of the push button may be directly brought into contact with the opening peripheral edge portion of the button insertion hole.

[Advantages of the Invention] As described above, according to the push button assembly structure of the present invention, the push button cannot be inserted into the button insertion hole unless both the positioning means and the engaging means match. That is, since the only button insertion hole corresponding to the push button is determined by the cooperation of the positioning means and the engaging means, it is possible to visually confirm even if the cross section of the push button has any shape. It is possible to surely prevent erroneous insertion of the push button without needing to improve workability.
Further, since the engaging means can be formed on the entire circumference of the engaging portion, it is possible to easily confirm the matching state of the engaging means and obtain a large number of identifications.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part conceptually showing a push button assembling structure according to the present invention, and FIG. 2 is a conceptual view showing a modified example of the push button assembling structure according to the present invention. FIG. 3 is a perspective view of an essential part of a conventional push button assembly structure. 11,12,13,31,32,33 ... pushbuttons, 11a, 12a, 13a, 31a, 32a, 3
3a ... Locking portion, 20, 40 ... Equipment housing, 21, 22, 23, 41, 42, 43 ... Button insertion hole, B, D ... Positioning means, C, C ′, C ″, E, E ′, E ″
... Engaging means.

Continuation of front page (72) Yutaka Motohashi 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Tsutomu Shiobara 1-share company of Asahigaoka 3-chome, Hino City, Tokyo Inside the Toshiba Hino Plant (72) Inventor Shigeru Koike One share company at Asahigaoka 3-chome, Hino-shi, Tokyo Inside the Toshiba Hino Plant (72) Osamu Ninomiya One share company at Asahigaoka 3-chome, Hino City, Tokyo Toshiba Hino Factory (56) Bibliography Sho 59-59417 (JP, U) Si 61-28227 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A plurality of pillar-shaped push buttons each having a brim-shaped locking portion at one end are inserted into corresponding button insertion holes of a device housing, and each of the push buttons and the button insertion hole is inserted. The direction of the push button is regulated by fitting a positioning means formed in one direction of the equipment casing, which is formed with a common unevenness between the guide rib formed in the peripheral edge of the opening and a cylindrical guide rib. In a push button assembling structure in which the locking portion is brought into contact with the end surface of the guide rib in this state, a central angle unique to each other with respect to the position of the positioning means is provided on a part of the peripheral edge of each locking portion. And a concave portion or a convex portion formed in a portion having a convex portion and a portion corresponding to a portion corresponding to the concave portion or a portion where the convex portion does not exist of the corresponding push button on the peripheral portion of each guide rib. When the push button corresponding to each of the button insertion holes is inserted, the engaging portion contacts the end surface of the guide rib through the concave portion or a portion of the outer peripheral portion of the engaging portion where the convex portion does not exist. On the other hand, when a push button that does not correspond to the button insertion hole is inserted, the contact portion abuts and engages with the engaging portion or the convex portion, and the engaging portion contacts the end surface of the guide rib. An assembly structure for a push button, characterized in that an engaging means having a projection for preventing contact is provided.