JP2007093218A - Attachment structure for watch band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide attachment structure for a watch band, capable of restraining the looseness of the watch band with respect to the watch case, without providing additional function, such as an elastic protrusion part in the watch band. <P>SOLUTION: Connection pins 6b in both sides of a spring rod 6 provided in the watch band 2 are provided in a band attaching part 4 of the watch case 1 made to face mounting holes 8 inserted therewith, soft members 9 are engaged respectively with the mounting holes 8, and insertion holes 10 are provided respectively to press the connection pins 6b of the spring rod 6 in, in the soft members 9. As a result, the connection pins 6b of the spring rod 6 is not inserted directly into the attaching holes 8 of the band attaching part 4, but inserted into the insertion holes 10 of the soft members 9 engaged with the attaching holes 8 of the band attaching part 4, and the spring rod 6 is thereby attached to the band attaching part 4, without generating the looseness, by elastic force of the soft members 9. The watch band 2 is thereby restrained from getting loose with respect to the watch case 1, without providing the additional function such as the elastic protrusion part in the watch band 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a watch band mounting structure used in a wristwatch.

  Conventionally, in a wristwatch, when attaching a watch band to a watch case, a band attachment portion including a pair of attachment projections is provided on a side surface of the watch case, and an attachment hole is provided on an opposing surface of the pair of attachment projections. The watch band is attached to the watch case by being provided so as to face each other and inserting both end portions of a spring bar provided on the tip end side of the watch band into the attachment hole.

  In such a watch band mounting structure, the watch band is attached to the band mounting portion by inserting both end portions of the spring bar into the mounting holes provided in the pair of mounting projections of the watch case band mounting portion, respectively. Therefore, there is a problem that the end portion of the spring bar is inserted with play in the mounting hole, and the watch band rattles against the watch case.

Therefore, in order to solve such a problem, in the conventional watch band mounting structure, as described in Patent Document 1, the watch band is formed of a soft synthetic resin and is attached to the tip of the watch band. There is a configuration in which an elastic protrusion is formed and the elastic protrusion is elastically contacted with an outer surface of the watch case to prevent the watch band from rattling with respect to the watch case.
ACT 6-16894

  However, in such a conventional watch band mounting structure, when the watch band is made of a soft synthetic resin, an elastic protrusion can be easily provided on the watch band. In the case of being made of metal, it is difficult to provide the elastic projection on the watch band, and there is a problem that the manufacturing cost increases. In particular, even if the watch band is made of a soft synthetic resin or a metal, there is a problem that the design and appearance are deteriorated because the elastic protrusion protrudes from the watch band.

  The problem to be solved by the present invention is to provide a watch band mounting structure capable of suppressing the play of the watch band with respect to the watch case without providing an additional function such as an elastic protrusion on the watch band.

In order to solve the above problems, the present invention includes the following components.
In addition, the reference numerals of the drawings attached to the respective components described in the section of the embodiment described later are attached to the respective components together with parentheses.

As shown in FIGS. 1 to 4, the invention described in claim 1 is a timepiece case (1) provided with a band attaching portion (2), and a spring bar (6) attached to the band attaching portion of the timepiece case. In a watch band mounting structure having a watch band (2) provided with
A mounting hole (8) into which both ends of the spring bar are inserted is provided opposite to the band mounting part, and a soft member (9) is fitted into the mounting hole, and both ends of the spring bar are fitted into the soft member. The watch band mounting structure is characterized in that an insertion hole (10) into which a portion (the connecting pins 6b on both sides) is press-fitted is provided.

  As shown in FIGS. 1 to 4, the invention according to claim 2 is provided with a locking portion (locking protrusion 8 a) on the inner surface of the mounting hole (8) of the band mounting portion (2), The watch band mounting structure according to claim 1, wherein an engaging portion (engaging recess 9a) to be locked to the locking portion is provided on an outer surface of the soft member (9). is there.

  In the invention according to claim 3, as shown in FIGS. 1 to 4, the spring bar (6) has its both ends (the connecting pins 6b on both sides) inserted into the insertion holes (10) of the soft member (9). ), The tip of the watch band (2) abuts on the outer surface of the watch case (1) to elastically deform the soft member in the thickness direction, whereby the mounting hole (8 3. The watch band mounting structure according to claim 1, wherein the watch band is mounted in an eccentric state.

  According to the first aspect of the present invention, the band mounting portion of the watch case is provided with the mounting holes inserted into the both ends of the spring rods provided on the watch band so that the soft members are respectively fitted into the mounting holes. In addition, the soft member is provided with insertion holes into which both ends of the spring bar are press-fitted, so that both ends of the spring bar are not directly inserted into the mounting holes of the band mounting part, and the band mounting part is attached. Since it is press-fitted into the insertion hole of the soft member fitted in the hole, the spring bar can be attached to the band attaching portion without rattling by the elasticity of the soft member. Therefore, the watch band can be elastically contacted with the outer surface of the watch case without providing the watch band with an additional function such as an elastic protrusion as in the conventional example. The backlash can be suppressed.

  According to the second aspect of the present invention, the engaging portion is provided on the inner surface of the attachment hole of the band attaching portion, and the engaging portion that is engaged with the engaging portion is provided on the outer surface of the soft member. When the soft member is pushed into the mounting hole of the band mounting portion, the engaging portion of the soft member is locked to the locking portion on the inner surface of the mounting hole, so that the soft member is securely fixed to the mounting hole of the band mounting portion. can do. For this reason, in this state, the operation member of the inspection jig can be inserted into the insertion hole of the soft member to inspect the attachment strength of the soft member with respect to the attachment hole of the band attachment portion, thereby ensuring stable quality. be able to.

  According to the invention of claim 3, when the spring bar is press-fitted at both ends thereof into the insertion holes of the soft member, the tip of the watch band comes into contact with the outer surface of the watch case and the soft member Since it is elastically deformed in the thickness direction and is attached in an eccentric state with respect to the mounting hole, it is possible to suppress the elastic deformation when the soft member comes out of the mounting hole, thereby securely and firmly holding the soft member. In addition to being able to be fixed in the mounting hole, even if the watch band is a hard material such as metal or a soft material such as synthetic resin, the tip of the watch band is elastic on the outer surface of the watch case. The watch band can be reliably prevented from being loosened by the contact force, and the watch band can be satisfactorily attached to the watch case.

Hereinafter, an embodiment to which the present invention is applied will be described with reference to FIGS.
FIG. 1 is a front view of a wristwatch to which the present invention is applied, and FIG. 2 is an enlarged cross-sectional view of a main part taken along the line AA.
As shown in FIG. 1, this wristwatch includes a watch case 1 and a watch band 2. The watch case 1 accommodates a watch module (not shown) therein, and a watch glass 3 is attached to the upper surface thereof as shown in FIG.

  In addition, band attachment portions 4 are respectively provided at locations on the outer peripheral surface of the watch case 1 at the 12 o'clock side and the 6 o'clock side, and near the 3 o'clock side on the outer peripheral surface of the watch case 1. A plurality of push button switches 5 are provided at the positions. On the other hand, as shown in FIGS. 1 and 2, the watch band 2 is provided with a spring bar 6 on the tip side thereof, and is configured to be attached to the band attaching part 4 of the watch case 1 by the spring bar 6. .

  That is, as shown in FIGS. 1 and 2, the band attachment portion 4 has a pair of attachment projections 7 provided on the side surface of the watch case 1, and the attachment holes 8 are coaxial with the pair of attachment projections 7. It is the structure provided facing up. Further, as shown in FIG. 2, the spring bar 6 of the watch band 2 is provided with a coil spring (not shown) inside a cylindrical main body 6a, and the connecting pin 6b is connected to the main body 6a by this coil spring. It is configured to be biased in a direction in which it is elastically pushed out from both ends.

  As shown in FIG. 2, the spring bar 6 is arranged in a through hole 2 a in which a cylindrical main body 6 a is provided penetrating in the width direction on the distal end side of the watch band 2. The distal end portion of the connecting pin 6b that is elastically pushed out from both end portions of 6a is configured to be inserted into the mounting holes 8 on both sides of the band mounting portion 4, respectively. In this case, a pair of ring-shaped position restricting portions 6c for restricting the protruding and protruding positions of the connecting pin 6b with respect to the main body portion 6a are provided in the intermediate portion of the connecting pin 6b.

  Incidentally, as shown in FIG. 2, each mounting hole 8 of the band mounting portion 4 has an inner diameter slightly larger than the outer shape of the spring bar 6, and a soft member 9 is fitted into the mounting hole 8. ing. The soft member 9 is made of a soft synthetic resin such as rubber or elastomer, and the shape thereof is formed in a substantially cap shape. Inside the soft member 9, an insertion hole 10 into which the tip end of the connecting pin 6 b of the spring bar 6 is press-fitted is formed. In this case, a locking projection 8 a is formed on the inner surface of the mounting hole 8, and an engagement recess 9 a that is locked to the locking projection 8 a of the mounting hole 8 is formed on the outer peripheral surface of the soft member 9. Has been.

  Therefore, as shown in FIG. 3A, the soft member 9 is elastically deformed when it is press-fitted into the mounting hole 8 from the outside (right side in the figure), as shown in FIG. 3B. The engaging recess 9 a of the soft member 9 is configured to engage with the locking projection 8 a of the mounting hole 8, thereby being fitted into the mounting hole 8. Further, as shown in FIG. 3C, the spring bar 6 of the watch band 2 is made of each soft material in which the tip ends of the connecting pins 6b on both sides thereof are fitted in the attachment holes 8 on both sides of the band attachment part 4, respectively. By being press-fitted into the insertion holes 10 of the member 9, it is configured to be attached to the attachment holes 8 on both sides of the band attachment portion 4 via the soft member 9.

Next, with reference to FIG. 3A to FIG. 3C, a case where the spring rod 6 is attached by fitting the soft member 9 into the attachment hole 8 of the band attachment portion 4 will be described.
First, as shown in FIG. 3A, the soft member 9 is press-fitted into the attachment hole 8 of the band attachment portion 4 from the outside (right side in the figure). At this time, the soft member 9 is elastically deformed and inserted into the mounting hole 8, and the engaging recess 9a of the soft member 9 is engaged with the locking projection 8a of the mounting hole 8 as shown in FIG. It is stopped and fitted in the mounting hole 8.

  In this state, the operation element 11a of the inspection jig 11 such as a pressure gauge is inserted from the inside (left side in the figure) into the insertion hole 10 of the soft member 9 fitted in the attachment hole 8, and the attachment hole 8 The mounting strength of the soft member 9 is inspected. When the attachment strength of the soft member 9 is sufficiently secured, as shown in FIG. 3C, the tip of the connecting pin 6b of the spring bar 6 attached to the tip of the watch band 2 is attached to the band. It press-fits into the insertion hole 10 of the soft member 9 fitted in the mounting holes 8 on both sides of the mounting portion 4 from the inside of the band mounting portion 4 (left side in the figure). As a result, the spring bar 6 is attached to the attachment hole 8 of the band attachment portion 4 via the soft member 9.

  In this way, when the watch band 2 is attached to the band attaching portion 4 of the watch case 1, as shown in FIG. 2, the front end portion of the watch band 2 contacts the outer surface of the watch case 1, Due to the contact force, the outer peripheral surface of the distal end of the connecting pin 6 b of the spring bar 6 compresses the thick part of the soft member 9 toward the opposite side of the watch case 1. Thereby, the soft member 9 is elastically deformed in the thickness direction, and the connecting pin 6 b and the spring bar 6 are attached in an eccentric state with respect to the attachment hole 8 of the band attachment portion 4.

  At this time, as shown in FIG. 2, since the soft member 9 is elastically deformed in the thickness direction, it is possible to suppress the elastic deformation when the soft member is pulled out of the mounting hole, thereby reliably and firmly. In addition to being able to fix the soft member in the mounting hole, in particular, the main body portion 6a of the spring bar 6 is pressed against the inner surface of the watch case side 1 in the through hole 2a of the watch band 2, so As a result, it can be attached to the attachment hole 8 of the band attachment part 4 without rattling, and can also be attached to the through-hole 2a of the watch band 2 without rattling. Thereby, the watch band 2 is attached to the band attaching portion 4 of the watch case 1 without rattling.

  For example, as shown in FIG. 4, when the flexible member 9 is not fitted in the mounting hole 12 of the band mounting portion 4 and the watch band 2 is made of metal, the connecting pin 6b of the spring bar 6 is connected to the band. Since the connecting pin 6b is inserted into the mounting hole 12 with a clearance due to tolerance because it is directly inserted into the mounting hole 12 of the mounting part 4, the main body part 6a of the spring bar 6 is also inserted into the through hole 2a of the watch band 2. Inserted with a clearance due to tolerance. For this reason, a gap S is generated between the tip of the metal watch band 2 and the outer surface of the watch case 1, so that the watch band 2 is rattled with respect to the band mounting portion 4 of the watch case 1. . However, in this embodiment, the rattling can be prevented as shown in FIG.

  Thus, according to the watch band 2 mounting structure, the mounting holes 8 into which the connecting pins 6b on both sides of the spring bar 6 provided on the front end side of the watch band 2 are inserted into the band mounting portion 4 of the watch case 1 are provided. Since the soft members 9 are respectively fitted in the mounting holes 8 and the insertion holes 10 into which the distal ends of the connecting pins 6b of the spring bar 6 are press-fitted are provided in the soft members 9, respectively. The connecting pins 6b on both sides of the spring bar 6 are not inserted directly into the mounting holes 8 on both sides of the band mounting portion 4, but are press-fitted into the insertion holes 10 of the soft member 9 fitted in the mounting holes 8 of the band mounting portion 4. Therefore, the spring bar 6 can be attached to the band attaching portion 4 without rattling by the elasticity of the soft member 9. Therefore, the watch band 2 can be elastically brought into contact with the outer surface of the watch case 1 without providing the watch band 2 with an additional function such as an elastic protrusion as in the conventional example. The play of the watch band 2 can be suppressed.

  In this case, in particular, a locking projection 8 a is provided on the inner surface of the mounting hole 8 of the band mounting portion 4, and an engagement recess 9 a that is locked to the locking projection 8 a is provided on the outer surface of the soft member 9. Thus, when the soft member 9 is pushed into the attachment hole 8 of the band attachment portion 4, the engagement recess 9 a of the soft member 9 is engaged with the engagement protrusion 8 a on the inner surface of the attachment hole 8. It can be securely fixed to the mounting hole 8 of the band mounting portion 4. For this reason, in this state, the operation element 11a of the inspection jig 11 such as a pressure gauge is inserted into the insertion hole 10 of the soft member 9, and the attachment strength of the soft member 9 to the attachment hole 8 of the band attachment portion 4 is inspected. Thus, stable quality can be ensured.

  Further, in the watch band 2 mounting structure, when the spring bar 6 presses the connecting pins 6b on both sides thereof into the insertion holes 10 of the soft member 9, the tip of the watch band 2 is the outer surface of the watch case 1. Since the soft member 9 is compressed in the thickness direction and is elastically deformed by contact with the mounting member 8 and is attached in an eccentric state with respect to the mounting hole 8, the connecting pin 6 b of the spring bar 6 is inserted into the insertion hole of the soft member 9. The watch band 2 can be attached to the band attaching portion 4 by being inserted into the band attaching portion 10 without rattling.

  That is, when the connecting pin 6b of the spring bar 6 is press-fitted into the insertion hole 10 of the soft member 9 and the tip of the watch band 2 comes into contact with the outer surface of the watch case 1, the connecting force 6b of the spring bar 6 is brought about by the contact force. Since the soft member 9 is elastically deformed in the thickness direction, the elastic deformation when the soft member 9 is pulled out from the mounting hole 8 can be suppressed, and thereby the soft member 9 is securely and firmly fixed in the mounting hole 8. In addition, the connecting pin 6b of the spring bar 6 can be mounted in an eccentric state with respect to the mounting hole 8.

  For this reason, the main body 6a of the spring bar 6 is pressed against the inner surface of the timepiece case 2 on the side of the timepiece case 1 in the through hole 2a of the timepiece band 2, so that the band attachment portion of the timepiece case 1 does not rattle the spring bar 6 and the timepiece band 2. 4 can be attached. Thereby, even if the watch band 2 is made of a hard material such as metal or a soft material such as a synthetic resin, the tip of the watch band 2 is brought into elastic contact with the outer surface of the watch case 1. In addition, the contact force of the watch band 2 with respect to the watch case 1 can be reliably prevented and the watch band 2 can be attached to the watch case 1 satisfactorily.

  In the above embodiment, the locking projection 8 a is provided on the inner surface of the mounting hole 8 of the band mounting portion 4, and the engagement recess 9 a that is locked to the locking projection 8 a is provided on the outer peripheral surface of the soft member 9. However, the present invention is not limited to this. For example, an engagement recess is provided on the inner surface of the attachment hole 8 of the band attachment portion 4, and a locking projection that engages with the engagement recess is provided on the outer peripheral surface of the soft member. A configuration may be used.

  Moreover, in the said embodiment, although the thing of the structure where the band attaching part 4 of the timepiece case 1 consists of a pair of attachment projection part 7 was described, it forms not only in this but in the shape of a hook provided with attachment parts on both sides. It may be a band attaching portion. Also in this case, mounting holes 8 into which both end portions of the spring bar 6 are inserted are coaxially opposed to the mounting portions on both sides of the band mounting portion formed in a bowl shape, and the soft members 9 are respectively provided in the mounting holes. What is necessary is just to comprise so that it may fit.

It is the front view which showed the wristwatch to which this invention is applied. It is an expanded sectional view of the principal part in the AA arrow of FIG. FIG. 2 shows a process of fitting a spring rod by fitting a soft member into the attachment hole of the band attachment portion of FIG. 2, (a) is an enlarged cross-sectional view showing a state of fitting the soft member into the attachment hole of the band attachment portion; ) Is an enlarged cross-sectional view showing a state in which the attachment strength of the soft member fitted in the attachment hole of the band attachment portion is inspected, and FIG. It is the expanded sectional view which showed the state which press-fitted the connecting pin. It is an expanded sectional view of the principal part which showed the attachment state of the spring bar and the timepiece band with respect to a band attaching part by the structure which does not use the soft member of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Watch case 2 Watch band 4 Band attaching part 6 Spring bar 6a Main body part 6b Connection pin 6c Position control part 7 Mounting projection part 8 Mounting hole 8a Locking projection part 9 Soft member 9a Engaging recess 10 Insertion hole 11 Inspection jig

Claims (3)

In a watch band mounting structure having a watch case provided with a band attaching portion and a watch band provided with a spring bar attached to the band attaching portion of the watch case,
The band mounting part is provided with mounting holes through which both ends of the spring bar are inserted, and soft members are respectively fitted into the mounting holes, and both ends of the spring bar are press-fitted into the soft member. An attachment structure for a watch band, characterized in that each insertion hole is provided.   The locking portion is provided on the inner surface of the mounting hole of the band mounting portion, and the engaging portion locked on the locking portion is provided on the outer surface of the soft member. 1. A watch band mounting structure according to 1. When the both ends of the spring bar are press-fitted into the insertion hole of the soft member, the tip of the watch band comes into contact with the outer surface of the watch case, and the soft member is elastically deformed in the thickness direction. Thus, the watch band mounting structure according to claim 1 or 2, wherein the watch band is mounted in an eccentric state with respect to the mounting hole.

Images