JPH08278377A - Clock wind shield glass-fixing structure - Google Patents

Abstract

PURPOSE: To provide a wind shield structure of a clock which improves the strength of the wind shield glass and workability of the holding part of this wind shield glass. CONSTITUTION: Provided are wind shield glass 4 forming around a slope part 19 of cone shape, a glass ferrule 23 having a slope 30 of cone shape with the same angle as the slope part 19 of the wind shield glass 4, and a ferrule pushing part 22 for pushing the glass ferrule 23. By holding this glass ferrule 23 with the ferrule holding part 22, the slope part 30 of the glass ferrule 23 is contacted to the slope part 19 of the wind shield glass 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windshield fixing structure for a timepiece such as a wristwatch.

[0002]

2. Description of the Related Art As a conventional windshield fixing structure of this type, there is a technique disclosed in Japanese Utility Model Publication No. 61-205092. In the disclosed technique, as shown in (1) of FIG. 6, a holding portion 41 is formed on the peripheral portion of the windshield 40, and the holding portion 41 is formed by a horizontal plane portion of the step portion 42. is there.

Then, the peripheral portion of the windshield 40 is placed on the glass support portion 44 of the watch case 43 via the receiving member 45, and the glass pressing ring 47 is screwed onto the screw portion 46 of the watch case 43. The windshield 40 is fixed to the timepiece case 43 by pressing the holding portion 41 at the peripheral portion of the windshield 40 with the glass holding ring 47 via the packing 48.

[0004]

However, since the holding portion 41 of the windshield 40 is formed by the horizontal surface portion of the step portion 42, the holding portion 41 has the shape shown in (2) of FIG. The windshield 40 has an extremely thin wall, and the base of the retainer 41, that is, the step 42 is always subjected to a force, and a crack 50 is generated in the corner 42a due to an external impact or high pressure. The strength of the windshield 40 was uneasy. Further, since the pressing portion 41 is the horizontal surface portion of the step portion 42, there is a problem that workability is poor.

The present invention has been made in view of the above problems, and an object thereof is a timepiece in which the strength of the windshield is improved and the workability of the holding portion of the windshield is improved. To provide a windshield fixing structure of.

[0006]

In order to achieve the above object, a windshield fixing structure for a timepiece according to the present invention is provided with a windshield having a conical sloped surface at its periphery, and a sloped surface of the windshield. Equipped with a glass pressing ring having a conical inclined surface portion of the same angle as the section, and a pressing means for pressing the glass pressing ring, the windshield and the glass pressing ring are incorporated into a watch case, the glass pressing ring It is characterized in that the sloping surface portion of the glass pressing ring is pressed against the sloping surface portion of the windshield by being pressed by the pressing means.

The pressing means may be a ring pressing member screwed into the threaded portion of the watch case, or the watch case may have a relief for absorbing the radial displacement of the glass pressing ring. A groove may be provided.

Further, it is preferable that the glass retaining ring is fixed to the timepiece case by any of screws, press fitting, crimping, biting, and welding.

[0009]

With this structure, the glass pressing ring is pressed by the pressing means, and the inclined surface portion of the glass pressing ring is brought into pressure contact with the inclined surface portion of the windshield to ensure high-pressure waterproofing.

Moreover, since the portion of the windshield that is pressed by the glass retaining ring is the conical slope of the peripheral portion of the windshield, the thickness of the windshield is extremely thin at this pressed portion. Never. As a result, the windshield does not crack, and the strength of the windshield can be improved. Further, since the portion of the windshield that is held by the glass holding ring is a conical slope portion, the workability is improved.

Since the pressing means is a ring pressing member screwed into the threaded portion of the timepiece case, the glass pressing ring is vertically moved by rotating and screwing the ring pressing member. By compressing, the pressure contact of the slope part to the slope part of the windshield (pressure contact in the radial direction and the axial direction) is maintained, and high pressure waterproofing is ensured.

Further, by providing an escape groove for absorbing the radial displacement of the glass retaining ring in the watch case, the glass retaining ring is compressed in the vertical direction and extends in the radial direction, and The outer peripheral portion is displaced outward, but this displacement can be absorbed by the relief portion, enabling vertical compression of the glass retaining ring, and the slope portion to the slope portion of the windshield. Maintains pressure contact (radial and axial pressure contact) to ensure high-pressure waterproofing.

Further, since the glass pressing ring is fixed to the watch case by any of screws, press fitting, crimping, biting, and welding, the windproof glass for ensuring high-pressure waterproofing can be easily fixed. Become.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a wristwatch equipped with the windshield fixing structure (Embodiment 1) of the present invention, in which a part thereof is omitted, and FIG. 2 is a sectional view in which a part of the windshield is omitted. Is a sectional view in which a part of the ring pressing member is omitted, and FIG. 4 is a sectional view in which a part of the glass pressing ring is omitted.

A wristwatch A, which is a portable timepiece, is provided with a module 2 in a watch case (body) 1, a back cover 3 is attached to the lower part of the watch case 1, and a windshield 4 is fixed to the upper part of the watch case 1 by glass. It is fixed by a mechanism 5, and is provided with a register ring 6 on the outside of the watch case 1.

That is, the timepiece case 1 is provided with a ring-shaped case body 7, two step portions 8 and 9 are formed inside the upper portion of the case body 7, and the upper step portion 8 is formed.
A threaded portion 10 and a relief portion 11 located below the threaded portion 10 are formed on the vertical surface portion of the above, and the horizontal surface portion of the upper step portion 8 is formed on the holding ring mounting portion 12. Also,
The vertical surface portion of the lower step portion 9 is formed on the waterproof packing contact portion 13, and the horizontal surface portion of the lower step portion 9 is formed on the glass supporting surface portion 14. The glass supporting surface portion 14 has a ring. A fitting groove 15 is formed.

A stepped register ring mounting portion 16 is formed on the outside of the upper portion of the case body 7, and an engaging projection 17 is formed in the middle of the vertical surface portion of the register ring mounting portion 16. Yes, register ring mounting part 1
A click spring mounting recess 18 is formed in the horizontal surface portion of 6.

As shown in FIGS. 1 and 2, the windshield 4 has a conical sloped surface portion 19 and a vertical surface portion 20 connected to the sloped surface portion 19 at the peripheral portion thereof, and the windshield. A flat surface portion 21 forming a right angle with the vertical surface portion 20 is formed on the peripheral side of the inner surface of the glass 4.

Further, the glass fixing mechanism 5 is provided with a ring pressing member 22, a glass pressing ring 23, a ring-shaped packing 32 and a 0 ring 33. The ring pressing member 22 has a ring-shaped member body 24 as shown in FIGS. 1 and 3, and the inner peripheral portion of the member body 24 is formed into a conical slope portion 25. A screw portion 26 is formed on the outer peripheral portion of the member main body 24. A rotary jig insertion recess 27 is formed on the upper portion of the member body 24, and a stepped pressing surface portion 28 is formed on the lower portion.

The glass pressing ring 23 is shown in FIG.
Further, as shown in FIG. 4, it has a ring main body 29, and the inner peripheral portion of the ring main body 29 forms the slope portion 19 of the windshield 4 into a conical slope portion 30 of the same angle,
A stepped pressing surface portion 31 is formed on the upper portion of the ring body 29. The material of the glass pressing ring 23 is Teflon (fluorine resin), nylon (polyamide resin), urethane (urethane resin), NBR (nitrile rubber), Delrin, Duracon (polyacetere), perprene (polyethylene terephthalate), rubber or synthetic. Rubber or the like is used.

Further, the register ring 6 has a ring body 34, and an eaves portion 36 which is substantially perpendicular to a vertical surface portion 35 of the ring body 34 is provided on an inner peripheral portion of the ring body 34.
Is formed inward, and the inner circumference of the eaves portion 36 is formed into a conical slope portion 37. The vertical surface portion 35
A ring groove portion 38 and an engaging protrusion portion 39 are formed on the bottom surface, and a click spring engaging tooth portion 40 is formed on the lower surface portion of the ring body 34.

The O-ring 33 is fitted in the ring fitting groove 15 of the watch case 1, and the ring-shaped packing 32 is provided along the waterproof packing contact portion 13. Further, the windshield 4 is incorporated in the timepiece case 1 by placing the flat surface portion 21 of the windshield glass 4 on the glass support surface portion 14 and pressing the vertical surface portion 20 of the windshield glass 4 against the ring-shaped packing 32.

The glass pressing ring 23 is mounted on the pressing ring mounting portion 12 of the timepiece case 1, and the conical slope portion 30 of the inner peripheral portion of the glass pressing ring 23 is the windshield. It is pressed against the conical slope portion 19 of No. 4. Further, the ring pressing member 22 is incorporated by screwing the threaded portion 26 of the outer peripheral portion thereof into the threaded portion 10 of the timepiece case 1, and the ring pressing member 22 is fitted in the rotary jig insertion recess 27. The stepped pressing surface portion 28 of the glass pressing ring 23 is screwed in by rotating the inserted rotating jig (not shown) to rotate the stepped pressing surface portion 3 of the glass pressing ring 23.
The glass pressing ring 23 is pressed from above to press the glass pressing ring 23 from above. Further, the glass pressing ring 23 is compressed in the vertical direction and extends in the radial direction to maintain pressure contact (radial and axial pressure contact) of the slope portion 30 with the slope portion 19 of the windshield 4. , Ensures high pressure waterproofing.

Since the glass retaining ring 23 is compressed in the vertical direction and extends in the radial direction as described above, the outer peripheral portion of the glass retaining ring 23 is displaced outward, and this displacement corresponds to the relief portion. 11 are absorbing.

The register ring 6 is rotatably attached to the register ring attachment portion 16 of the case body 7. That is, the register ring 6
Is pushed into the register ring mounting portion 16 from above with the O-ring 42 fitted and inserted in the ring groove portion 38, so that the engaging projection portion 39 is rotatable with respect to the engaging projection 17 of the register ring mounting portion 16. The O-ring 42 is engaged with and attached to the register ring attachment portion 16, and the O-ring 42 is in sliding contact with the vertical surface portion of the register ring attachment portion 16. The click spring engaging tooth portion 40 of the register ring 6 meshes with the click spring 43 mounted in the click spring mounting recess 18.

According to the above-mentioned embodiment, the glass pressing ring 23 is pressed by the ring pressing member 22, and the inclined surface portion 30 of the glass pressing ring 23 is pushed to the windshield 4.
By making pressure contact with the slope portion 14, it is possible to ensure high-pressure waterproofing.

Moreover, since the portion of the windshield 4 which is pressed by the glass retaining ring 23 is the conical slope portion 19 of the peripheral portion of the windshield 4, the meat of the windshield 4 is held at this pressed portion. The thickness does not become extremely thin. Therefore, the windshield 4 is not cracked, and the strength of the windshield 4 can be improved. Further, the portion of the windshield 4 that is pressed by the glass pressing ring 23 has a conical slope portion 1.
Since it is 9, the step portion 42 is formed like the conventional windshield 40.
Since it is not necessary to form, and as a result, the grinding amount and the number of surfaces to be processed are reduced, the workability is extremely improved.

(Embodiment 2) FIG. 5 shows the windshield fixing structure of this embodiment 2. The difference between the windshield fixing structure according to the second embodiment and the windshield fixing structure according to the first embodiment is that the ring holding member 22 is attached to the register ring attaching portion 16 by means of the screw portion 26 and the screw portion. Without using screwing with 10, the pressing protrusion 44 provided on the register ring mounting portion 16 is made to bite on the ring pressing member 22, and the ring pressing member 2
It means that 2 can be held down.

That is, the register ring mounting portion 1
A pressing protrusion 44 is formed on the inner peripheral portion of 6, and
A pressed portion 45 composed of a step is formed on the outer side of the upper surface of the ring pressing member 22, and the pressing protrusion 44 is formed.
By pressing the pressed portion 45, the inclined surface portion 30 of the glass pressing ring 23 via the ring pressing member 22.
Is pressed against the slope portion 19 of the windshield 4 to ensure high-pressure waterproofing. Another configuration is the first embodiment.
The configuration is the same as that of. It should be noted that how to press the ring pressing member 22 to the pressing protrusion 44 is determined by the lower slope of the pressed portion 45 of the ring pressing member 22 and the upper slope of the pressing protrusion 44. By pressing the upper side of the.

Further, the timepiece case 1 may be attached to the glass pressing ring 23 by any of screw, press-fit, caulking, other bite, and welding.

[0032]

As described above, the windshield fixing structure for a timepiece according to the present invention has a windshield having a conical sloped surface formed on the periphery thereof and a cone having the same angle as the sloped surface of the windshield. Equipped with a glass pressing ring having a flat sloped portion, and a pressing means for pressing the glass pressing ring, the windshield and the glass pressing ring are incorporated into a watch case, and the glass pressing ring is pressed by the pressing means,
High pressure waterproofing can be ensured by pressing the slope portion of the glass retaining ring against the slope portion of the windshield.

Moreover, since the portion of the windshield that is pressed by the glass retaining ring is the conical slope of the peripheral portion of the windshield, the thickness of the windshield becomes extremely thin at this pressed portion. Never. As a result, the windshield does not crack, and the strength of the windshield can be improved. Further, since the portion of the windshield that is pressed by the glass holding ring is a conical slope, it is not necessary to form a step as in conventional windshields, and as a result, the amount of grinding and the number of faces to be processed are increased. The workability is extremely improved because the amount of slag decreases.

Since the pressing means is a ring pressing member screwed into the threaded portion of the watch case, the glass pressing ring is vertically moved by rotating and screwing the ring pressing member. By compressing, the pressure contact of the slope part to the slope part of the windshield (pressure contact in the radial direction and the axial direction) can be maintained, and high pressure waterproofing can be ensured.

By providing an escape groove for absorbing the radial displacement of the glass retaining ring in the timepiece case, the glass retaining ring is compressed in the vertical direction and extends in the radial direction, and The outer peripheral portion is displaced outward, but this displacement can be absorbed by the relief portion, enabling vertical compression of the glass retaining ring, and the slope portion to the slope portion of the windshield. Pressure contact (pressure contact in the radial direction and the axial direction) can be maintained, and high pressure waterproofing can be ensured.

Further, since the glass pressing ring is fixed to the watch case by any of screws, press fitting, crimping, biting, or welding, the windproof glass for ensuring high-pressure waterproofing can be easily fixed. Become.

[Brief description of drawings]

FIG. 1 is a partially omitted cross-sectional view of a wrist watch having a windshield fixing structure (Example 1) of the present invention.

FIG. 2 is a cross-sectional view in which a part of the windshield is omitted.

FIG. 3 is a sectional view in which a ring pressing member is partially omitted.

FIG. 4 is a cross-sectional view in which a part of a glass pressing ring is omitted.

FIG. 5 is a cross-sectional view of a wristwatch provided with the windshield fixing structure (Example 2) of the present invention with a part thereof omitted.

FIG. 6 (1) is a partially omitted sectional view of a wristwatch having a conventional windshield fixing structure. (2) is an explanatory view of the occurrence of cracks in the holding portion of the windshield.

[Explanation of reference numerals] 4 windshield 19 slope portion 22 ring retaining member 23 glass retainer ring 30 slope portion

Claims (4)

[Claims] 1. A windshield having a conical sloped surface formed on the periphery thereof, a glass presser ring having a conical sloped surface at the same angle as the sloped surface of the windshield, and a presser foot for pressing the glass presser ring. Means, the windshield and the glass retaining ring are assembled in a watch case, the glass retaining ring is pressed by the retaining means, and the slope portion of the glass retaining ring is pressed against the slope portion of the windshield. The fixed structure of the windshield of the watch, which is characterized by being made. 2. The windshield fixing structure for a timepiece according to claim 1, wherein the holding means is a ring holding member screwed into a threaded portion of the timepiece case. 3. The windshield fixing structure for a timepiece according to claim 1, wherein the timepiece case is provided with an escape groove for absorbing a radial displacement of the glass retaining ring. 4. The glass retainer ring includes a screw, a press fit,
The windshield fixing structure for a watch according to claim 1, wherein the watch glass is fixed to the watch case by crimping, biting or welding.