JPH0743251U - Watch bezel mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] When the bezel is attached to the watch case by the snap structure, the secondary processing of the bezel and the watch case is omitted and the molding is simplified. [Structure] A through hole-shaped opening 8 is formed in a band mounting portion 6 of a wristwatch case 1, and an engagement step portion 1 is formed on an inner wall surface of the opening 8.
Form 0. An engagement portion 11 that engages with the engagement step portion 10 is formed on the lower end portion 9 of the bezel 2. Engaging part 11 and engaging step part 1
The bezel 2 is attached to the wristwatch case 1 by engaging with 0. The wristwatch case 1 can be formed with the engaging step portion 10 as a boundary surface between the upper die and the lower die, and the bezel 2 can be formed with the engaging portion 11 as a boundary surface between the upper die and the lower die. Since the portion 10 and the engaging portion 11 can be integrally formed, secondary processing is unnecessary.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bezel mounting structure that is attached to a wristwatch case for decoration or the like.

[0002]

[Prior art]

 The bezel is attached to the upper side of the watch case to improve the design and appearance of the watch. When attaching this bezel, methods such as adhesive bonding and screwing are also used, but these methods are not preferable because they involve an increase in the number of parts and the work process, and the bezel has a snap structure. It has been customary to attach a watch to a wristwatch case.

4 to 6 show a conventional structure for mounting the bezel. In FIGS. 4 and 6, reference numeral 41 is a wristwatch case, in which a timepiece module (not shown) is housed, and a back cover 43 is attached to the lower surface via an O-ring 42. 4 and 5, reference numeral 50 denotes a bezel, which is attached to the upper side of the wristwatch case 41. Since this bezel 50 is attached to the wristwatch case 41 by the snap structure, a groove portion 45 having an open upper surface is formed in the upper portion of the band attachment portion 44 of the wristwatch case 41, and a step portion 46 is formed on the inner wall surface of the groove portion 45. Has been formed. The lower end portion 52 of the bezel 50 is inserted into the groove portion 45, and the hook portion 51 that engages with the step portion 46 is formed at the corresponding portion of the lower end portion 52.

In such a configuration, the bezel 50 and the wristwatch case 41 are relatively positioned, and the lower end portion 52 of the bezel 50 is inserted into the groove portion 45, whereby the hook portion 51 and the step portion 46 are separated from each other. A simple attachment of the bezel 50 can be made for engagement. In addition, in order to enable attachment by such a snap structure, at least one or both of the bezel 50 and the wristwatch case 41 is molded of synthetic resin.

[0005]

[Problems to be solved by the device]

 However, in the conventional structure, when the wristwatch case 41 and the bezel 50 are made of synthetic resin, it is difficult to simultaneously form the step portion 46 and the hook portion 51. For this reason, after the wristwatch case 41 and the bezel 50 have been molded, it is necessary to perform secondary processing to mold the stepped portion 46 and the hook portion 51, respectively, which increases the number of processing steps and makes the processing troublesome. There was a problem.

The present invention has been made in view of the above circumstances, and provides a bezel mounting structure for a wristwatch that can be easily processed without increasing the number of processing steps even if the bezel is attached by snapping. With the goal.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a wristwatch case having an opening formed in a band mounting portion at 6 o'clock and 12 o'clock, an engagement step formed on a wall surface inside the opening of the wristwatch case, and And a bezel in which an engaging portion that engages with the engaging step portion is formed.

[0008]

【Example】

 1 to 3 show an embodiment of the present invention. As shown in FIG. 1, the wristwatch of the present embodiment includes a wristwatch case 1 and a bezel 2 attached to the upper portion of the wristwatch case 1. The wristwatch case 1 and the bezel 2 are made of synthetic resin for weight reduction. A watch module (not shown) is housed inside the watch case 1, and a watch glass (not shown) is fitted and fixed to the upper surface of the watch case 1. Reference numeral 3 is a recess into which the watch glass is fitted. A back cover 5 is attached to the lower surface of the wristwatch case 1 via an O-ring 4 in an airtight state. A band attaching portion 6 for attaching a watch band is integrally formed at 6 o'clock and 12 o'clock in the wrist watch case 1.

The bezel 2 is attached to the wristwatch case 1 with a snap structure. In the illustrated example, the bezel 2 has a shape that covers the upper portion of the wristwatch case 1, and at the same time, a transparent portion for exposing a display means (not shown) such as a dial stored in the wristwatch case 1 in the central portion. The window 7 is formed.

2 and 3 show cross sections of the bezel 2 and the wristwatch case 1 at the time of molding, respectively. As shown in FIG. 3, the wristwatch case 1 has an opening 8 formed in the band attachment portion 6 formed in the 6 o'clock and 12 o'clock directions.

The opening 8 is formed in a penetrating state with its upper and lower ends opened, and the lower end 9 of the bezel 2 is inserted into this opening 8 (see FIG. 1). Further, an engaging step portion 10 is formed on the wall surface inside the opening. The engagement step portion 10 is formed on the outer wall surface of the opening 8, and the lower end portion 9 of the bezel 2 is engaged with the engagement step portion 10.

The wristwatch case 1 having such a structure is molded of synthetic resin. In such molding, as shown in FIG. 3, the engaging stepped portion 10 is formed on the boundary surface (parting surface) between the upper mold and the lower mold. By molding the mold as the surface, the engaging step portion 10 can be molded reliably and with high precision at the same time as the molding of the wristwatch case 1. As a result, the secondary processing for post-processing the engagement step portion 10 can be omitted, and the processing steps can be reduced and the processing operation can be simplified.

On the other hand, as shown in FIG. 1, the lower end portion 9 of the bezel 2 is inserted into the opening 8 of the wristwatch case 1. The lower end portion 9 of the bezel 2 has a hook shape at a portion facing the engaging step portion 10. The engaging portion 11 is formed. The bezel 2 is attached to the wristwatch case 1 by engaging the engagement portion 11 with the engagement step portion 10 of the wristwatch case 1. Therefore, the bezel 2 can be attached to the wristwatch case 1 with a snap structure.

Even when the bezel 2 is molded from synthetic resin, the engaging portion 11 can be a boundary surface (parting surface) between the upper mold and the lower mold as shown in FIG. Simultaneously with the molding of No. 2, the engaging portion 11 can be surely molded with high precision. As a result, secondary processing for post-processing the engaging portion 11 is not necessary, and the number of processing steps can be reduced and the processing work can be simplified.

The present invention can be variously modified without being limited to the above-mentioned embodiment. For example, either one of the wristwatch case 1 and the bezel 2 may be molded by metal casting. In this case, Also, by forming the engagement step portion 10 and the engagement portion 11 as a boundary surface between the upper mold and the lower mold, it is possible to perform integral molding.

[0016]

[Effect of device]

 The present invention has a structure in which an opening having an engaging step portion is formed in a wristwatch case, and an engaging portion engaging with the engaging step portion is formed in a bezel to attach the bezel to the wristwatch case. Secondary processing of both the case and bezel is not required, and its molding can be performed easily.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view showing a bezel according to an embodiment of the present invention.

FIG. 3 is a sectional view showing a wristwatch case according to an embodiment of the present invention.

FIG. 4 is a sectional view of a conventional structure.

FIG. 5 is a sectional view of a bezel having a conventional structure.

FIG. 6 is a sectional view of a wristwatch case having a conventional structure.

[Explanation of symbols]

 1 Watch Case 2 Bezel 8 Opening 10 Engaging Step Part 11 Engaging Part

Claims (1)

[Scope of utility model registration request] 1. A wristwatch case having an opening formed in a band mounting portion in the 6 o'clock and 12 o'clock directions, an engagement step portion formed on a wall surface inside the opening of the wristwatch case, and the engagement step portion. A bezel mounting structure for a wristwatch, comprising: a bezel in which an engaging portion that engages is formed.