JP2503761Y2 - Push-button structure of watch case - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a push button structure of a watch case.

[Conventional technology]

As a conventional push button structure, there is a structure as shown in the sectional view of FIG. (JP-A-49-32672). Second
In the figure, 1 is a watch case, 2 is a pipe fixed to the watch case 1, 3 is a button shaft having a groove 3a, and a packing 4 is wound and inserted into the pipe 2. Reference numeral 5 denotes a button packing having a concave portion and a convex portion. The outer end of the button shaft 3 is brought into contact with the inner concave portion and the button 7 having the concave portion on the outer convex portion is superposed. It is fixed to the watch case 1 by being screwed into the screw portion 1a provided on the watch case 1.

[Problems to be solved by the device]

In this conventional push button structure, the watch case must be provided with a screw part for screwing the screwing ring, but in order to maintain the strength of the outer lower part of the watch case and the screw part, strength is maintained. It is necessary to keep a certain amount or more, and in the conventional structure, there is a limit in thinning the watch case.

An object of the present invention is to provide a push-button structure for a watch case, which enables the watch case to be thin, and which can maintain smooth operability and reliable waterproofness for a long period of time.

[Means for solving the problem]

To achieve the above object, the structure of the present invention is as follows.

The push button for a cap has a flat body portion, an acupressure portion projecting outward and a button pressing portion projecting inward at a substantially central portion of the body portion, and the cap pipe is a socket type, The inner wall of the annular wall has a hole penetrating substantially the center of the threaded portion and the outer end wall, and thus the cap is formed so that only the acupressure part is projected from the hole of the cap pipe. The push button for the cap is housed in the pipe for use, and the outer periphery of the main body is sandwiched by the screwed pipe and the pipe for the cap so that the main body is orthogonal to the axial direction of the push button, and When the button pressing portion is opposed to the outer end surface of the push button, and when the acupressure portion is pressed from the outside, the main body portion bends in the axial direction of the push button, and the button pressing portion is pushed. Characterized by pressing the outer end face of the button.

[Embodiment] Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a push button structure according to an embodiment of the present invention.

In FIG. 1, 11 is a watch case, 12 is a watch case 11
With the pipe fixed to the through hole of
It has a collar portion 12a on the outside, and a screw portion is provided on the outer periphery of this collar portion 12a.
12b is formed. A push button 13 has a groove 13a on the outer periphery of the shaft, and a packing 14 is wound around the groove. The push button 13 is inserted into the pipe 12 and is prevented from coming off by a retaining ring 17 attached to the inner end. Reference numeral 15 denotes a cap push button made of an elastic member. The push button 15 for a cap is composed of a flat plate-shaped main body portion 15b, and a flange portion 15a directed inward is formed on the outer peripheral edge thereof. Further, the acupressure part 15c protruding outward at the substantially central part of the main body part 15b and the acupressure part 15c at the approximately central part of the main body part 15b.
A button pressing portion 15d which faces the c and projects inward is formed.

Reference numeral 16 is a pipe for a cap, which has a socket-like shape, has a threaded portion 16a formed on the inner peripheral surface of its annular wall, and a hole 16b penetrating substantially the center of its outer end wall.

Here, the flange portion 15a of the push button 15 for a cap is disposed in a circumferentially attached state on the outside of the threaded portion 12b of the pipe 12, that is, the step portion 12C formed at the outer peripheral end of the flange portion 12a. Thus, the flat body portion 15b is arranged on the pipe 12 in a direction orthogonal to the axial direction of the push button 13.

Further, the cap pipe 16 is covered so that the cap push button 15 is housed therein, and only the acupressure part 15c is projected outward from the hole 16b. Then, the screw portion 16a of the cap pipe 16 is screwed into the screw portion 12b of the pipe 12. Therefore, at the same time that the cap pipe 16 is fixed to the pipe 12, the flange portion 15a of the cap push button 15 is clamped and fixed by the pipe 12 and the cap pipe 16 in the axial direction of the push button 13, Water resistance is secured.

At this time, when the acupressure part 15c is applied from the outside, the body part 1
5b bends in the axial direction of the push button 13, so that the button pressing portion 15d presses the outer end surface of the push button 13 to operate it.

[Effect of device]

As described above, according to the present invention, a pipe having a threaded portion on the outer periphery of a collar portion is press-fitted and fixed in a through hole of a watch case, a push button is inserted into the pipe, and a push button for a cap is attached around the pipe. Since the cap push button is sandwiched by screwing the pipe and the cap pipe together, it is not necessary to provide a screw portion on the watch case, and as a result, the watch case can be made thin. Moreover, the stability of the waterproof performance as well as the assembly of the push button could be improved.

Further, according to the present invention, only the acupressure part is projected from the hole of the cap pipe so that it can be pressed by a finger, and the main part of the push button for the cap is housed inside the pipe for the cap to prevent the load of external force. It is configured to protect. Therefore,
The main part of the push button for caps will not be damaged or broken by the load of large or sharp external force, so the durability of the push button for caps will be remarkably improved and the waterproof property will be maintained reliably for a long period of time. You can

Further, the present invention has a structure in which only the acupressure part of the cap push button is projected from the hole of the cap pipe, and even if an unintended external force is applied to the cap push button, only the acupressure part bends and the push button is pushed. The external force was not applied to the. Therefore, since the push button does not move due to such an unintended external force, malfunction of the push button can be prevented. In particular, an external force that is orthogonal to the axial direction of the push button or an oblique external force is applied to the axial direction of the push button, and the shaft of the push button moves orthogonally to the axial direction or moves in the oblique direction and presses against the pipe. Since it can be prevented from being bent or broken, reliable operability can be maintained for a long period of time.

Further, according to the present invention, the body of the push button for the cap has a flat plate shape, and the outer circumference is sandwiched between the pipe and the pipe for the cap so that the flat plate body is orthogonal to the axial direction of the push button. . Thereby, when the acupressure part is applied in the axial direction of the push button, the main body part can be easily bent in the axial direction of the push button.
It is possible to obtain smooth operability.

Further, since the main body is bent in the same direction as the acupressure direction orthogonal to the main body, fatigue and wear of the main body are extremely small, and the main body does not easily deteriorate. Therefore, it is possible to remarkably enhance the durability of the push button for the cap and maintain reliable waterproofness for a long period of time.

Further, according to the present invention, the main body of the push button for a cap is provided with a button pressing portion that protrudes in opposition to the protruding acupressure portion so as to face the outer end surface of the push button. As a result, when the body pressure portion is flexed in the axial direction of the push button by pressing the acupressure portion, the button pressing portion surely abuts and presses the outer end surface of the push button, so that the push button operation is ensured. can do.

In addition, even if the shiatsu portion is pressed with a large force, the shiatsu portion and the button pressing portion are bent, so the push button is prevented from exerting an excessive load on the module, and the module is not damaged due to this. Can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a push button structure of a watch case showing an embodiment of the present invention, and FIG. 2 is a sectional view of a push button structure of a conventional watch case. 11 …… Watch case, 12 …… Pipe, 12a, 15a …… Brim part, 12b, 16a …… Screw part, 12c …… Step part, 13 …… Push button, 13a …… Groove, 14 …… Packing, 15 ...... Push button for cap, 15b …… Main body, 15c …… Shiatsu,
15d …… Button pressing part, 16 …… Cap pipe, 16b…
… Hole, 16c… Collar, 17… Stop ring.

Claims (1)

(57) [Scope of utility model registration request] 1. A watch case is provided with a through hole, and a pipe having a threaded portion on the outer periphery of a collar portion is fixed to the through hole by press-fitting adhesion or the like. A push button for a cap, which is made of an elastic member, is provided outside the threaded portion on the outer periphery of the flange of the pipe so as to contact the outer end surface of the push button. A push button structure of a watch case in which a cap pipe having a threaded portion is screwed, and the outer periphery of the cap push button is sandwiched between the pipe and the cap pipe, wherein the cap push button is a flat plate. A main body portion, an acupressure portion protruding outward at a substantially central portion of the main body portion, and a button pressing portion protruding inward, the cap pipe is a socket type, The inner wall of the annular wall has a hole penetrating the screw part and the substantially central part of the outer end wall, and thus, only the acupressure part is projected from the hole of the cap pipe. The push button for the cap is housed inside the pipe, and by the pipe and the cap pipe that are screwed together,
The outer periphery of the main body is sandwiched so that the main body is orthogonal to the axial direction of the push button, and the button pressing portion is opposed to the outer end surface of the push button, and the acupressure portion is pressed from the outside. Then, the push button structure of the watch case, wherein the main body portion bends in the axial direction of the push button, and the button pressing portion presses the outer end surface of the push button.