JPH08317810A - Banding structure on wrist watch - Google Patents

Abstract

PURPOSE: To improve the appearance of a band and facilitate its mounting on a wrist by making unapparent from outside a spring mechanism portion comprising a spring member and a spring rod and inserting a band side attachment portion into an insertion recess portion with gap provided in between. CONSTITUTION: A spring member 11 is inserted into a band side attachment portion 7 of a band and also a spring piece portion 19 is inserted into a notch portion 9, to be protruded outward. A spring rod 21 is inserted through a spring rod insertion hole 10 in the band side attachment portion 7 into another spring rod insertion hole 10 of the band side attachment portion 7 via a spring rod insertion portion 20 of the spring member 20. The band side attachment portion 7 of the band 6 is inserted into an attachment recess portion 4 of a case side attachment portion 3 of a watch case 2, with pivots 22, 23 on right and left side being retracted. The band 6 is thus attached in the case side attachment portion 3 by fitting the pivots 22, 23 in a pivot hole 5. In this case, gap is provided in between upper/lower face portions of the band side attachment portion 3 and upper/lower face portion of the attachment recess portion 4 of the case side attachment portion 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band mounting structure for a wristwatch such as a C-type wristwatch.

[0002]

2. Description of the Related Art The band mounting structure of a conventional C-type wristwatch is
There is a configuration in which a band is attached to the case side attachment portion of the watch case (side) by brazing, or a configuration shown in FIG.

In the prior art shown in FIG. 5, the case side mounting portion 4 is used.
The spring rod 42 is attached to the concave portion 41 provided in 0, the side surface inverted L-shaped connecting side end portion 43a of the band 43 is inserted between the concave portion 41 and the spring rod 42, and the spring fitted to the spring rod 42 is inserted. One end 44a of 44 is locked to the side end surface 45 of the recess 41, and the other end 44b of the spring 44 is brought into contact with the connecting side end 43a. The C-type wristwatch is attached to the wrist of the arm. If not, the band 43 is closed by the spring force of the spring 44. When the band 43 is expanded, the band 43 abuts the case-side mounting portion 40 at a position a on the front side thereof.

[0004]

However, in the above-mentioned conventional band using brazing for fixing to the case side mounting portion, since the band is directly fixed to the case side mounting portion. However, when the C-type wristwatch is worn on the wrist, the band has to be deformed forcibly to be expanded, and the brazed portion is broken.

Further, in the structure of the prior art shown in FIG. 5, since the band mounting structure can be seen from the direction B, it is unattractive, and the band 43 abuts the case side mounting portion 40 at the front side portion B. , When I move the band 43 to attach the C-type wristwatch to the wrist of the arm, each time I move it, the band 43
However, there is a problem that the band 43 is easily scratched by hitting the case side mounting portion 40 at that position a.

Further, since the side surface inverted L-shaped connecting side end portion 43a of the band 43 is inserted between the recess 41 and the spring rod 42, a gap t between the band 43 and the surface portion of the recess 41 is formed. However, the band 43 has a small opening angle and is difficult to wear on the wrist. Further, the spring mechanism portion 46 formed by the spring rod 42 and the spring 44 and the band 4 are included.
Since 3 and 3 are vertically overlapped with each other, the thickness of the case side mounting portion 40 is increased to accommodate the spring mechanism portion 46 and the band 43, and the thickness of the watch body itself is increased. was there.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a good appearance, no damage to the band, and easy attachment to the wrist. Another object of the present invention is to provide a wrist watch band mounting structure that can reduce the thickness of the watch body.

[0008]

In order to achieve the above object, the band mounting structure for a wristwatch according to the present invention comprises an insertion concave portion having pivot holes on both sides, which is provided in a case side mounting portion of a watch case. The band-side mounting portion of the band includes an insertion portion having spring-rod insertion holes on both sides, a spring member, and a spring rod, and the spring-rod insertion portion of the spring member is pressed against the inner surface of the insertion portion. A fixing piece portion and a spring piece portion protruding toward the outer surface of the insertion portion are formed, and the spring member is inserted into the insertion portion, and a spring rod is inserted into the spring rod insertion portion and the spring rod insertion hole. Insert and fix the spring member to the insertion part, insert the band side attachment part into the insertion recess with a gap, lock the pivot of the spring rod in the pivot hole, and insert the spring piece part. It is characterized in that it is pressed against the inner surface of the recess.

Then, the spring member is wound around the spring member substantially once to form a spring rod insertion portion, and a fixing piece portion on the front side composed of a pair of projecting piece portions is provided around the spring rod insertion portion. And a fixed piece on the back side composed of a pair of projecting pieces and a spring piece consisting of a projecting piece slightly curved outward.

[0010]

With this configuration, the spring mechanism portion including the spring member and the spring rod cannot be seen from the outside so that the appearance is good, and the band-side mounting portion is inserted into the insertion recess with a gap. Therefore, the band is less likely to come into contact with the mounting portion on the case side, the band will not be scratched even if the band is moved to wear the wristwatch on the wrist of the wrist, and the opening angle of the band is reduced. It becomes larger and easier to wear on the wrist.

Further, since the spring mechanism portion including the spring member and the spring rod is housed in the band side mounting portion, the thickness of the case side mounting portion can be reduced, and the thickness of the timepiece body itself can be reduced. Can be thinned.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a wrist watch having a band mounting structure according to the present invention, FIG. 2 is an exploded perspective view of the band mounting structure, FIG. 3 is an arrow view from the direction A of FIG. 2, and FIG. It is sectional drawing of a structure.

The watch case (side) 2 of the wristwatch 1 has case-side mounting portions 3 formed at 12 o'clock and 6 o'clock.
Rectangular mounting recesses 4 are formed in the end surface 3a of the case-side mounting portion 3, and pivot holes 5 are formed in the left and right side surface portions 3b and 3c of the case-side mounting portion 3 so as to be pulled out to the mounting recesses 4. I am doing it.

A rectangular insertion portion 8 is formed on the end surface portion 7a of the band side mounting portion 7 of the band 6 of the wristwatch 1, and a flat surface is formed in the center portion of the surface portion 7d of the band side mounting portion 7. A notch 9 is formed in a rectangular shape as viewed, and a spring rod insertion hole 10 through which the insertion portion 8 is pulled out is formed in the left and right side surfaces 7b and 7c of the band side attachment portion 7.

Reference numeral 11 in FIG. 2 denotes a spring member (plate winding spring), and this spring member 11 is formed by winding the spring plate member 11a substantially once. That is, this spring plate material 11a is punched into a rectangular shape by press punching, and the central projecting piece 12A, the left outer projecting piece 13A, the left inner projecting piece 14A, and the right outer side are provided on one end side of the spring plate material 11a. Projecting piece 15
A and the right inner side protruding piece portion 16A are formed, and the central protruding piece portion 12B, the left outer side protruding piece portion 13B, the left inner side protruding piece portion 14B, and the right outer side protruding portion are formed on the other end side of the spring plate member 11a. One piece 15
B and the right inner protruding piece 16B are formed, and the left and right inner protruding pieces 14A and 16A are each curved inward in an arc shape, and the central protruding portion 12A is slightly curved outward.
Further, the central protruding piece 12B and the left and right outer protruding pieces 13B, 1
5B is curved inward in an arc shape.

In this state, the spring plate member 11a is wound approximately once, and the central projecting piece 12B curved in an arc shape is brought into contact with or close to the back side of the central projecting piece 12A so that the left outer projecting piece 13A is The left outer projecting piece 13B curved in an arc shape is brought into contact with or close to the back side, and the left inner projecting piece 14A curved in an arc is brought into contact with or close to the back side of the left inner projecting piece 14B, and the right outer projection is made. The right outer protruding piece portion 15B curved in an arc shape is brought into contact with or close to the back side of the piece portion 15A, and the right inner protruding piece portion 16B is bent in an arc shape on the back side of the right inner protruding piece portion 16B.
The spring member 11 is formed by abutting or adjoining A.

The left and right outer protruding pieces 13A and 15A which are not curved are fixed piece portions 17L and 17R on the left and right sides.
And the left and right inner protruding pieces 14B, 1 which are not curved.
6B constitutes left and right back side fixing pieces 18L and 18R,
The central protruding piece 12A slightly curved outward is the spring piece 1
9 is composed. Further, the central protruding piece portion 12B curved in an arc shape, the left, the right inner protruding piece portions 14A, 16A and the left, the right outer protruding piece portions 13B, 15B and the curved portion 11 of the spring plate member 11a.
The spring rod insertion portion 20 is configured with b.

Further, reference numeral 21 in FIG. 2 denotes a spring rod, and pivots 22 and 23 are provided at the left and right ends of the spring rod 21, and the left and right pivots 22 and 23 can move in the axial direction to form a spring. It is biased outward by a spring (not shown) housed in the rod 21.

Then, the spring member 11 constructed as described above is inserted into the insertion portion 8 of the band side mounting portion 7 of the band 6, and the front side fixing pieces 17L and 17R are attached to the ceiling surface portion 8a of the insertion portion 8. The left and right back side fixing pieces 18L, 18R
While pressing the bottom surface portion 8b of the insertion portion 8 respectively,
The spring piece portion 19 is inserted into the cutout portion 9 and the spring piece portion 19 is projected outward. Then, from one (right) spring rod insertion hole 10 to the spring member 11 on the band side mounting portion 7.
The spring rod 21 is inserted into the other (left) spring rod insertion hole 10 via the spring rod insertion portion 20 of FIG.

The band side mounting portion 7 of the band 6
Is inserted into the mounting recess 4 of the case side mounting portion 3 of the watch case 2 with the left and right pivots 22 and 23 retracted, and the left and right pivots 22 and 23 are connected to the case side mounting portion 3
Of the watch case by locking the spring piece portions 19 protruding outward from the cutout portions 9 to the left and right pivot holes 5 and the ceiling surface portion 4a of the insertion concave portion 4 of the case side mounting portion 3 by pressure. A band 6 is attached to the case-side attachment portion 3 of 2. In this case, gaps T1 and T2 are provided between the upper and lower surfaces of the band-side mounting portion 3 and the upper and lower surfaces of the mounting recess 4 of the case-side mounting portion 3.

Next, the mounting of the wristwatch having the band 6 mounted on the wrist with the band mounting structure configured as described above will be described.

When the band 6 is expanded outwardly, the band 6 rotates about the pivots 22 and 23 of the spring rod 21 and presses against the ceiling surface 4a of the insertion recess 4 of the case side mounting portion 3. The spring piece portion 19 that is being compressed is compressed. By passing the wrist through the band 6 thus widened and releasing the widening force to the band 6, the band 6 is tightened by the compression reaction force of the spring piece portion 19 and the wristwatch is mounted on the wrist.

According to the above embodiment, the spring member 11
Since the spring mechanism portion including the spring rod 21 and the spring rod 21 cannot be seen from the outside, the appearance is improved. Further, since the band-side mounting portion 7 is inserted into the insertion recess 4 with the gaps T1 and T2, the band 6 is less likely to abut the case-side mounting portion 3, and the wristwatch 1 is worn. Even if the band 6 is moved so as to be worn on the wrist, the band 6 is not scratched, and the opening angle of the band 6 is increased, so that the band 6 is easily worn on the wrist.

Further, since the spring mechanism portion composed of the spring member 11 and the spring rod 21 is housed in the band side mounting portion 7, the thickness of the case side mounting portion 3 can be reduced, and the timepiece main body can be made thin. The thickness of itself can be reduced.

The spring member 11 is replaced by a spring plate material 11
The spring rod insertion portion 20 is formed by winding a about one turn, and the pair of protrusions 13 are provided on the circumferential side of the spring rod insertion portion 20.
Front side fixing piece portions 17L and 17R made of A and 15A,
Fixed piece 1 on the back side consisting of a pair of projecting pieces 14B, 16B
8L, 18R, and a protruding piece 12A slightly curved outward
It is possible to integrally manufacture the spring piece portion 19 made of.

[0026]

As described above, in the wristwatch band mounting structure according to the invention of claim 1, the case side mounting portion of the watch case is provided with the insertion recesses having the pivot holes on both sides.
An insertion portion having spring rod insertion holes on both sides is provided in the band side attachment portion of the band, and the spring member is projected to the spring rod insertion portion toward the outer surface of the fixing piece portion press-contacted to the inner surface of the insertion portion and the insertion portion. A spring piece portion is formed, the spring member is inserted into the insertion portion, the spring rod is inserted into the spring rod insertion portion and the spring rod insertion hole, and the spring member is fixed to the insertion portion. Insert the band side mounting part into the insertion recess with a gap,
While locking the pivot of the spring rod in the pivot hole,
By pressing the spring piece portion against the inner surface of the insertion recess, the spring mechanism portion including the spring member and the spring rod cannot be seen from the outside, so that the appearance is improved.

Further, since the band-side mounting portion is inserted into the insertion recess with a gap, the band is less likely to contact the case-side mounting portion, and the wristwatch is mounted on the wrist of the arm. Even if you move the band as much as possible, the band will not be scratched, and the opening angle of the band will be large, making it easy to wear on the wrist.

Further, since the spring mechanism portion including the spring member and the spring rod is housed in the band side mounting portion, the thickness of the case side mounting portion can be reduced, and the thickness of the timepiece body itself can be reduced. Can be thinned.

A wristwatch band mounting structure according to a second aspect of the present invention is the wristband band mounting structure according to the first aspect of the invention, in which the spring member is wound around a spring plate material approximately once and the spring rod is inserted therethrough. The front side fixing piece part consisting of a pair of projecting piece parts, the back side fixing piece part consisting of a pair of projecting piece parts, and a slight outward bend along the circumference of this spring rod insertion part. By integrally forming the spring piece portion composed of the protruding piece portion, not only the same effect as the effect of the invention of claim 1 can be obtained, but also the spring plate material is wound to fix the spring rod insertion portion and the front side fixing piece. The portion, the fixed piece on the back side, and the spring piece can be integrally manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view of a wrist watch having a band mounting structure according to the present invention.

FIG. 2 is an exploded perspective view of the band mounting structure.

FIG. 3 is a view from the direction A in FIG.

FIG. 4 is a cross-sectional view of the band mounting structure.

FIG. 5 is a sectional view of a band mounting structure of a conventional wristwatch.

[Explanation of symbols]

 2 Watch case 3 Case side mounting part 4 Insertion concave part 5 Pivot hole 7 Band side mounting part 8 Insertion part 10 Spring rod insertion hole 11 Spring member 17L, 17R, 18L, 18R Fixing piece part 19 Spring piece part 20 Spring bar insertion part 21 Spring rod 22,23 Pivot

Claims (2)

[Claims] 1. An insertion recess provided on a case side mounting portion of a watch case having pivot holes on both sides, and an insertion portion provided on a band side mounting portion of a band having spring rod insertion holes on both sides, A spring member and a spring rod, and a spring rod insertion portion of the spring member is provided with a fixed piece portion that is pressed against the inner surface of the insertion portion and a spring piece portion that projects toward the outer surface of the insertion portion. While inserting the spring member into the insertion portion, the spring rod is inserted into the spring rod insertion portion and the spring rod insertion hole to fix the spring member to the insertion portion, and the band side attachment portion is provided with a gap in the insertion recess. A wristwatch band mounting structure, characterized in that the spring rod pivots into the pivot hole while the spring bar is pressed against the inner surface of the insertion recess. 2. A spring plate member is wound around the spring member substantially once to form a spring rod insertion portion, and a front side fixing piece portion formed of a pair of projecting piece portions is provided on the circumferential side of the spring rod insertion portion. 2. The wristwatch band mounting structure according to claim 1, wherein a fixed piece portion on the back side formed of a pair of projecting piece portions and a spring piece portion formed of a projecting piece portion slightly curved outward are integrally formed.