JP2007090046A - Arm-worn device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an arm-worn device capable of securing a sufficient attachment strength to an external force applied to a band. <P>SOLUTION: A pair of projections 10a and 11a or 10b and 11b are provided on the back face of a wristwatch case 1 corresponding to both sides of the end a band attachment part, at a prescribed spaced interval; and an engagement projection part 22 engaged between the pair of projection parts 10a and 11a or 10a and 11b and preventing the pull-out in the longitudinal direction of the watch band 2 or 3 is provided at each tip part of the watch band 2 or 3. When an external force in the vertical direction, the twisting direction, or the pull-out direction is applied to the watch band 2 or 3 with the watch band 2 or 3 attached to each band attachment part 8 of the wristwatch case 1 by a spring bar, the external force applied to the spring bar is received and reduced by the engagement projection part 22 of the watch band 2 or 3, so as to sufficiently secure the attachment strength of the watch band 2 or 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an arm mounting apparatus such as a wristwatch used by mounting on an arm.

Conventionally, in order to reduce the weight and the price of a wristwatch, as described in Patent Document 1, a wristwatch case made of a hard synthetic resin and a watch band made of a soft synthetic resin are provided. When the watch band tip is fitted into the case's band mounting recess, the spring rod is inserted into the insertion hole provided in the watch band's tip, and both ends of the spring rod are connected to the watch case band mounting recess. The watch band is attached to the band attaching recess of the watch case by a spring bar by being inserted into each attachment hole provided on both sides of the inside.
Japanese Utility Model Sho 55-157417 (Japanese Utility Model Sho 63-12729)

  Such wristwatches have a watch band tip that prevents both ends of the spring bar attached to the watch band from being attached to both side holes in the watch case's band mounting recess by impact from outside. The contact projection is provided on the inner surface of the band mounting recess, and the locking projection is provided on the lower side of the contact projection to be locked to the back surface of the watch case. . Therefore, in this wristwatch, when the tip of the watch band is attached to the band attachment recess of the watch case with the spring bar, the contact protrusion provided at the tip of the watch band contacts the inner upper surface of the band attachment recess. The latching projection on the lower side of this abutment projection is latched and elastically contacted with the back surface of the watch case, so that the impact from the outside is received, and both ends of the spring bar are attached to the respective mounting holes of the band mounting recess. It is designed not to come off.

  However, in such a conventional wristwatch, the contact convex portion provided at the tip of the watch band contacts the inner upper surface of the band mounting concave portion, and the locking convex portion on the lower side of the contact convex portion is the wristwatch. Since it is locked and elastically contacted with the back surface of the case, even if an external force in the vertical direction and torsional direction is applied to the watch band, the contact protrusion and the locking protrusion provided at the tip of the watch band Although the external force applied to both ends of the spring bar can be reduced, if an external force in the direction of pulling the tip of the watch band from the band mounting recess along the longitudinal direction of the watch band is applied, the external force is applied to both ends of the spring bar. There is a possibility that both end portions of the spring bar may be removed from the mounting hole of the band mounting recess, and the watch band mounting strength by the spring bar cannot be sufficiently secured.

  The problem to be solved by the present invention is to provide an arm mounting device that can secure a sufficient mounting strength against an external force applied to a 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 elements described in the section of each embodiment described later are attached to the respective constituent elements together with parentheses.

1 to 17, a main body case (watch case 1 or 30) and a band for attaching the main body case to an arm (watch band 2, 3 or 31, 32). And an arm mounting device in which the tip end portions (16, 37, 40) of the band are attached to the band attaching portions (8 or 33) provided on both sides of the main body case by the attaching rod (spring rod 19). ,
At least a pair of protrusions (10a, 11a and 10b, 11b, or 34a, 35a and 34b, 35b) that contact the arm are provided at predetermined intervals on the back surface of the main body case corresponding to both ends of the band attachment portion. An engagement protrusion (22 or 38) is provided at the distal end of the band, and is engaged between the pair of protrusions to prevent the band from coming out in the longitudinal direction. This is an arm mounting device.

  1 to 16, the pair of protrusions (10a, 11a and 10b, 11b, or 34a, 35a and 34b, 35b) is formed of the main body case (watch case). 2. The arm mounting device according to claim 1, wherein the arm mounting device is provided so as to correspond to both sides of each end of the band attaching portion (8 or 33) provided on both sides of 1 or 30). .

  As shown in FIGS. 1 to 16, the pair of protrusions (10a, 11a and 10b, 11b, or 34a, 35a and 34b, 35b) are provided in the main body case (watch case). 3. The arm mounting device according to claim 1, wherein the arm mounting device is formed separately from the main body case by a synthetic resin softer than 1 or 30).

  As shown in FIGS. 1 to 10 and FIGS. 12 to 16, the band attachment portion (8 or 33) provided on both sides of the main body case (watch case 1 or 30) is provided. ) Of the pair of protrusions (10a, 11a and 10b, 11b, or 34a, 35a and 34b, 35b) respectively corresponding to both sides of each end of the main body case. The arm mounting device according to claim 3, wherein the protrusions are connected by connecting portions (12, 13).

  As shown in FIG. 11, the invention according to claim 5 corresponds to both sides of each end of the band attachment portion (8 or 33) provided on both sides of the main body case (watch case 1 or 30). 4. The arm according to claim 3, wherein all of the pair of projecting portions (10 a, 11 a, 10 b, 11 b, or 34 a, 35 a, 34 b, 35 b) are connected by a connecting portion (25). It is a mounting device.

  In the invention according to claim 6, as shown in FIGS. 1 to 17, the band (watch band 2, 3 or 31, 32) includes a band main body (15 or 36) and the band main body in the band main body. The material of the tip (16, 37, 40) including the engagement protrusion (22 or 38) is different, the band body is formed of a soft synthetic resin, and the tip of the band body is The arm mounting device according to any one of claims 1 to 5, wherein the arm mounting device is formed of a synthetic resin harder than the band main body.

  As shown in FIGS. 1 to 17, the invention according to claim 7 is provided with a fitting recess (21) on the inner upper surface of the band mounting portion (8 or 33), and the band (watch band 2, 3). A fitting projection (23) that fits into the fitting depression of the band mounting portion is provided at the tip portion (16, 37, 40) of 31 or 32). It is an arm mounting apparatus in any one of 1-6.

As shown in FIGS. 18 to 20, the invention described in claim 8 is a main body case (watch case 50) provided with a band attaching portion (8) on both sides, and a back surface disposed on the back surface of the main body case. In the arm mounting device provided with a lid (6) and a band (watch band 51) disposed on the band attaching portion of the main body case for attaching the main body case to the arm,
An extension part (54) extending to the back surface of the back cover is provided at the end part (tip part 53) of the band disposed in the band attaching part, and the extension part sandwiches the back cover and The arm mounting device is characterized in that it is attached to the main body case with a screw member (screw 14).

  According to the ninth aspect of the present invention, as shown in FIGS. 18 to 20, the screw member (screw 14) protrudes on both sides of the extension portion (54) toward the back side of the back cover (6). 9. The arm mounting device according to claim 8, wherein a pair of protrusions (55) provided with screw insertion holes (screw insertion holes 56) into which a screw is inserted are provided at a predetermined interval. .

  According to the tenth aspect of the present invention, as shown in FIGS. 18 to 20, a counterbore portion (57) into which the head portion (14a) of the screw member (screw 14) is inserted into the pair of protrusion portions (55). ) Are provided corresponding to the screw insertion holes (screw insertion holes 56), respectively.

  As for invention of Claim 11, as shown in FIGS. 18-20, the said band (watch band 51) is formed with the soft synthetic resin, In any one of Claims 8-10 characterized by the above-mentioned. It is an arm mounting apparatus of description.

  According to the first aspect of the present invention, in the arm mounting device in which the tip end portion of the band is attached to the band attaching portion provided on both sides of the main body case by the attaching rod, the main body case corresponding to both ends of the band attaching portion. At least a pair of protrusions is provided on the back surface of the band at a predetermined interval, and the band is attached to the tip of the band attached to the band attachment part to engage between the pair of protrusions to prevent the band from coming out in the longitudinal direction. Since the joint protrusion is provided, the engagement protrusion provided at the front end of the band is provided on the back surface of the main body case when the front end of the band is attached to the band attachment portion of the main body case with the mounting rod. Engagement between the pair of protrusions prevents the band from coming out in the longitudinal direction.

  For this reason, even if an external force in the vertical direction and torsional direction is applied to the band in this state, the external force applied to the mounting rod can be received and reduced by the engagement protrusion of the band engaged between the pair of protrusions. At the same time, even if an external force is applied in the direction of pulling the tip of the band from the band mounting portion along the longitudinal direction of the band, the external force is not directly applied to the mounting rod, but the band is engaged between the pair of protrusions. Since the external force can be received by the protruding portion, it is possible to sufficiently secure the band mounting strength by the mounting rod.

  According to the second aspect of the present invention, the pair of protrusions are provided corresponding to both sides of each end of the band mounting portion provided on both sides of the main body case, so that the main body case is separated by the band. When attached to the arm, each pair of protrusions corresponding to both sides of each end of the band attachment portion abuts on the arm, so that the longitudinal direction of the band is between the back surface of the main body case and the surface of the arm. Since a gap is formed continuously from one end portion of the main body case to the other end portion along the orthogonal direction, the air permeability between the back surface of the main body case and the surface of the arm can be ensured by the gap.

  According to the third aspect of the present invention, the pair of protrusions are formed separately from the main body case by a synthetic resin that is softer than the main body case. When the arm is attached to the arm, the pair of protrusions softly contact the arm, so that the arm can be easily attached and the body case can be satisfactorily attached to the arm for fitting.

  According to the fourth aspect of the present invention, of the pair of protrusions corresponding to both sides of each end of the band mounting portion provided on both sides of the main body case, the band mounting portions positioned on both sides of the main body case Are connected by the connecting portion, even if there are a pair of corresponding protruding portions on both sides of each end portion of the band attaching portion on both sides of the main body case, the number of parts as the protruding portion can be reduced. While the increase can be suppressed, it is not necessary to attach each protrusion to the main body case individually, and two protrusions can be attached to the main body case at the same time, thereby simplifying the assembling work.

  According to the invention described in claim 5, since all of the pair of protrusions corresponding to both sides of each end of the band mounting portion provided on both sides of the main body case are connected by the connecting portion, Compared to the invention according to claim 4, the number of parts as protrusions can be further reduced, and all the protrusions can be attached to the main body case at the same time, thereby further simplifying the assembly work. And productivity can be improved.

  According to the invention described in claim 6, since the band main body portion of the band is formed of a soft synthetic resin, the fit of the band main body portion with respect to the arm is good, and the engagement protrusion in the band main body portion Is formed of a synthetic resin that is harder than the band main body, thereby increasing the holding force of the band front end against the main body case, and thereby the external force in the vertical and twist directions on the band, and Even if an external force is applied in the direction of pulling out the leading end portion of the band along the longitudinal direction of the band, the opening of the gap between the main body case and the leading end portion of the band can be minimized.

  According to the seventh aspect of the present invention, the fitting concave portion is provided on the inner upper surface of the band attaching portion, and the fitting convex portion for fitting to the fitting concave portion of the band attaching portion is provided at the front end portion of the band. Even if the external force in the vertical direction and the twisting direction is applied to the band, and the external force in the direction of pulling the leading end of the band along the longitudinal direction of the band from the band attaching portion, In addition to receiving and reducing the external force applied to the mounting rod by the engagement protrusion of the band engaged between the pair of protrusions, the engagement recesses of the band attachment part and the engagement protrusions of the band tip part in particular Since the external force can be received and reduced by the fitting force, the band mounting strength by the mounting rod can be further increased.

  According to the invention described in claim 8, the main body case provided with the band attaching portions on both sides, the back cover disposed on the back surface of the main body case, and the main body case disposed on the band attaching portion of the main body case. In the arm mounting device having a band for attaching the arm to the arm, an extension portion extending to the back surface of the back cover is provided at the end portion of the band disposed in the band attachment portion, and this extension portion is provided on the body case. Since it is attached with a screw member across the back cover, the band can be securely attached to the band attaching portion of the main body case together with the back cover without using a mounting bar such as a spring bar. For this reason, it is possible to simplify the mounting operation for attaching the band and the back cover to the main body case, and even if external force is applied to the band in the pulling direction along the longitudinal direction of the band in addition to the vertical direction and the twisting direction, The external force can be reliably received by the screw member, and thereby the band mounting strength can be sufficiently secured.

  According to the ninth aspect of the present invention, the pair of projecting portions provided on both sides of the extension portion toward the back side of the back cover and provided with screw insertion holes into which the screw member is inserted are separated by a predetermined distance. By being provided, the pair of protrusions can increase the mounting strength of the extending portion of the band by the screw member, and the body case is attached to the arm by the band as in the invention of claim 2. Sometimes, a pair of protrusions provided on both sides of the extension at the end of the band abuts the arm, so that the band between the back surface of the main body case and the surface of the arm is perpendicular to the longitudinal direction of the band. A gap that continues from one end portion of the main body case to the other end portion can be provided along the gap, and air permeability between the back surface of the main body case and the front surface of the arm can be ensured by the gap.

  According to the invention described in claim 10, the counterbore portions into which the head portions of the screw members are inserted in the pair of protrusion portions are provided corresponding to the screw insertion holes, respectively, so that the extension of the band to the main body case is achieved. Even if the part is attached with a screw member, the head of the screw member is inserted into the counterbore of the protrusion, so that the head of the screw member can be prevented from protruding from the protrusion, and thus the main body case can be Since the head of the screw member does not come into contact with the arm when attached to the arm, the body case can be attached to the arm satisfactorily with good fit.

  According to the eleventh aspect of the invention, since the band is formed of a soft synthetic resin, when the main body case is attached to the arm by the band, not only the fit of the band to the arm is good but also the extension. Since the pair of protrusions provided on the part is attached to the main body case with a screw member, even if the band is formed of a soft synthetic resin, the pair of protrusions provided on the extension part provides sufficient attachment strength of the band. Can be secured.

(Embodiment 1)
A first embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS.
1 is a front view of the wristwatch of the present invention, FIG. 2 is a rear view thereof, FIG. 3 is an exploded perspective view of the main part of FIG. 2, and FIG. 4 is a main part of the watch case of FIG. 5 is an enlarged sectional view taken along the line AA in FIG. 1, FIG. 6 is an enlarged sectional view taken along the line BB in FIG. 2, and FIG. 7 is an enlarged sectional view taken along the line CC in FIG. It is.
As shown in FIGS. 1 and 2, the wristwatch includes a wristwatch case 1 and watch bands 2 and 3 for attaching the wristwatch case 1 to an arm.

  As shown in FIGS. 1 to 7, the watch case 1 is made of a hard synthetic resin, for example, ABS resin. A watch glass 4 is attached to an upper surface portion of the watch case 1, a watch module 5 is accommodated therein, and a lower portion is made of metal. The back cover 6 is attached through a waterproof packing 6a. In this case, as shown in FIG. 1, the wristwatch case 1 is formed in a horizontally long substantially semi-elliptical rectangular shape in which the 9 o'clock side (9H) protrudes in a substantially arc shape. Further, on each side surface portion of the wristwatch case 1 at 3 o'clock side (3H) and 9 o'clock side (9H) and on each upper surface portion of 12 o'clock side (12H) and 6 o'clock side (6H), there are respectively push buttons. A switch 7 is provided, and on each side of the wristwatch case 1 at the 12 o'clock side and the 6 o'clock side, band attaching portions 8 are provided so as to be biased toward the 3 o'clock side.

  Further, as shown in FIGS. 2 to 7, a pair of projecting members 10 that contact the arm, on the outer periphery of the back surface of the watch case 1, that is, the outer peripheral edge of the back surface of the back cover 6 and the lower portion of the side surface of the watch case 1, 11 is provided along the 3 o'clock side (3H) and the 9 o'clock side (9H on the right side in FIG. 2) with the band attaching portion 8 as a boundary. The pair of projecting members 10 and 11 are both made of a synthetic resin softer than the wristwatch case 1, for example, a urethane resin. Of the pair of projecting members 10 and 11, the 3 o'clock side projecting member 10 is, as shown in FIGS. 2 and 3, one end portion of the band attaching portion 8 located on the 12 o'clock side (12H), that is, 3 A protrusion 10a corresponding to the end of the hour side (), and a protrusion 10 b corresponding to one end of the band mounting portion 8 located on the 6 o'clock side (6H), that is, the end of the 3 o'clock side. The parts 10 a and 10 b are connected by the connecting part 12.

  Further, the projecting member 11 on the 9 o'clock side corresponds to the other end of the band mounting portion 8 located on the 12 o'clock side, that is, the end on the 9 o'clock side (right side in FIG. 2), as shown in FIGS. And a projection 11b corresponding to the other end of the band mounting portion 8 located on the 6 o'clock side, that is, the end on the 9 o'clock side, and these projections 11a and 11b are connected by the connecting portion 13. It has a configuration. And these protrusion members 10 and 11 are attached to the back surface of the wristwatch case 1 together with the back cover 6 by screws 14 for attaching the back cover 6 to the respective protrusions 10a, 10b and 11a, 11b at both ends.

  In this case, the projecting member 10 on the 3 o'clock side is substantially linear along the lower part of the side surface of the watch case 1 extending from the band attaching portion 8 on the 12 o'clock side through the 3 o'clock side to the band attaching portion 8 on the 6 o'clock side. Is formed. Further, the projecting member 11 at the 9 o'clock side is substantially inverted C-shaped along the lower part of the side surface of the watch case 1 extending from the band attaching portion 8 at the 12 o'clock side through the 9 o'clock side to the band attaching portion 8 at the 6 o'clock side. Is formed. Further, each of the protrusions 10a, 10b, 11a, 11b is formed so as to protrude in a mountain shape, and corresponds to both sides of each end portion of each band mounting portion 8 provided on both sides of the watch case 1, It arrange | positions at the back surface of the back cover 6, protrudes toward the back surface side of the back cover 6, and is comprised so that it may contact | abut to an arm as shown in FIG.

  Of the protrusions 10a, 10b, 11a, and 11b, the pair of protrusions 10a and 11a corresponding to the band attaching part 8 on the 12 o'clock side are separated by a predetermined interval as shown in FIGS. Thus, they are arranged corresponding to both sides of the end portion of the band attaching portion 8 on the 12 o'clock side. In this case, as shown in FIGS. 2 and 4, the pair of protrusions 10a and 11a is provided with the band attaching portion 8 being biased toward the 3 o'clock side of the watch case 1, and thus the pair of protrusions 10a and 11a. Is arranged in a state of being biased toward the 9 o'clock side with respect to the central portion of the band attaching portion 8 on the 12 o'clock side.

  Further, as shown in FIGS. 2 and 9, the pair of protrusions 10b and 11b corresponding to the 6 o'clock side band attaching portion 8 are also spaced from each other by a predetermined distance as shown in FIGS. It is arranged corresponding to both sides. Also in this case, as shown in FIGS. 2, 3, and 9, the pair of protrusions 10 b and 11 b has an intermediate portion biased toward the 9 o'clock side with respect to the center of the band mounting portion 8 on the 6 o'clock side. It is arranged in the state.

  On the other hand, of the watch bands 2 and 3, the watch band 2 on the 12 o'clock side is attached to the band attaching portion 8 on the 12 o'clock side of the watch case 1 as shown in FIGS. Is attached to the band attaching portion 8 on the 6 o'clock side of the watch case 1. In this case, both of the watch bands 2 and 3 have substantially the same configuration, and will be described in order from the watch band 2 attached to the band attaching portion 8 on the 12 o'clock side.

  As shown in FIGS. 5 and 8, the 12 o'clock side watch band 2 is made of a material having a different band main body portion 15 and a tip end portion 16 of the band main body portion 15 attached to the band attachment portion 8 of the watch case 1. Is formed. That is, the band main body portion 15 is made of a soft urethane resin, and the tip end portion 16 of the band main body portion 15 is made of a urethane resin harder than the band main body portion 15, and both are integrally formed by insert molding or two-color molding. ing. In this case, the band main body 15 is made of, for example, a soft urethane resin having a hardness of about 80 to 90 degrees, and the distal end portion 16 is made of a hard urethane resin having a hardness of about 97 to 100 degrees. Further, a decorative portion 15 a is formed of the same hard urethane resin as that of the distal end portion 16 on the upper surface on the distal end side of the band main body portion 15.

  As shown in FIGS. 3 to 10, the distal end portion 16 of the watch band 2 includes an attachment protrusion 17 that is inserted into the band attachment portion 8 on the 12 o'clock side of the watch case 1, and the attachment protrusion 17 is the band. Provided on the front end surface of the main body 15, an insertion hole 18 is provided through the mounting protrusion 17 in the width direction of the band main body 15, and a spring bar 19 is inserted into the insertion hole 18. The spring rod 19 is configured to be attached to the band attachment portion 8 by the spring rod 19 by inserting both end portions of the spring rod 19 into attachment holes 20 provided opposite to both sides in the band attachment portion 8.

  In this case, as shown in FIG. 3, the band attaching portion 8 is formed in a concave shape opened on the lower surface side (the upper surface side in FIG. 3), and the attachment holes 20 are provided on both side portions in the inside thereof so as to face each other. In addition, a fitting concave portion 21 is provided in the width direction of the timepiece band 2, that is, along the spring bar 19 on the inner upper surface (lower surface in FIG. 3). The 6 o'clock side band attaching portion 8 has the same configuration.

  Further, as shown in FIGS. 3 to 10, a pair of protrusions 10 a located on both sides of the end of the band mounting 8 on the 12 o'clock side are provided at the tip 16 of the watch band 2, that is, the tip of the attachment protrusion 17. , 11a, and an engagement protrusion 22 for preventing the watch band 2 from coming out in the longitudinal direction. That is, as shown in FIGS. 2 to 4, the engagement protrusion 22 is engaged between the pair of protrusions 10 a and 11 a and disposed on the back surface of the back cover 5. Is formed in a substantially inverted trapezoidal shape that extends toward the center side of the watch case 1 along the pair of protrusions 10a and 11a, and both sides of the inverted trapezoidal shape are a pair of protrusions 10a, The watch band 2 is configured to be prevented from slipping out in the longitudinal direction by being locked to the inner portion of 11a.

  In this case, as shown in FIGS. 2 to 4, the engagement protrusion 22 is provided in a state where the pair of protrusions 10 a and 11 a are eccentric with respect to the band attachment portion 8. The tip 16 is provided with a slight deviation from the center of the mounting projection 17 toward the 9 o'clock side, and the shape of the pair of projections 10a and 11a is different. Are formed in different substantially trapezoidal shapes (see FIGS. 9 and 10).

  Further, on the top end portion 16 of the watch band 2, that is, on the upper surface of the mounting projection portion 17, as shown in FIG. 5, a fitting convex portion that fits into a fitting concave portion 21 provided on the inner upper surface of the band attaching portion 8. 23 is provided. As shown in FIGS. 9 and 10, the fitting protrusion 23 is provided on the upper surface of the mounting projection 17 along the insertion hole 18 into which the spring bar 19 is inserted, and is provided on the tip 16 of the watch band 2. When the engagement protrusion 22 is engaged between a pair of protrusions 10a and 11a corresponding to both sides of the end of the band attachment portion 8 at 12 o'clock, as shown in FIG. It is configured to fit into the mating recess 21.

  By the way, as shown in FIGS. 2 and 9, the watch band 3 attached to the 6 o'clock side band attaching portion 8 is engaged between a pair of protrusions 10b and 11b corresponding to the 6 o'clock side band attaching portion 8. Then, an engagement protrusion 22 that prevents the watch band 2 from coming out in the longitudinal direction is provided on the mounting projection 17 of the tip 16 of the watch band 3, and the tip 16 provided with the engagement protrusion 22 is provided. Is formed symmetrically with respect to the front end portion 16 of the watch band 2 on the 12 o'clock side, and the other configurations are the same as those of the watch band 2 on the 12 o'clock side.

Next, the case where the watch band 2 on the 12 o'clock side of the watch bands 2 and 3 is attached to the band attaching portion 8 on the 12 side of the watch case 1 will be described.
At this time, the projecting members 10 and 11 are attached to the back surface of the watch case 1 together with the back cover 5 with screws 14 in advance. Further, the spring bar 19 is inserted into the insertion hole 18 of the mounting projection 17 provided at the tip 16 of the watch band 2. In this state, the front end portion 16 of the watch band 2 is attached to the band attaching portion 8 on the 12 o'clock side of the watch case 1. At this time, as shown in FIG. 3, the both ends of the spring bar 19 are pressed while fitting the fitting convex portion 23 provided at the tip 16 of the watch band 2 into the fitting concave portion 21 of the band attaching portion 8. In this state, the front end portion 16 of the watch band 2 is fitted into the band attaching portion 8.

  Accordingly, as shown in FIG. 5, the fitting convex portion 23 of the tip end portion 16 of the watch band 2 is fitted into the fitting concave portion 21 of the band attaching portion 8, and both end portions of the spring bar 19 shown in FIG. It inserts in the attachment hole 20 provided in the both sides of the band attachment part 8. At the same time, the engagement protrusions 22 provided at the tip 16 of the watch band 2 are engaged between the pair of protrusions 10a and 11a corresponding to both sides of the end of the band attachment 8 as shown in FIG. Match. At this time, the engagement protrusion 22 is formed in a substantially inverted trapezoidal shape, and both sides of the inverted trapezoidal shape are locked to the inner side of the pair of projections 10a and 11a, so that the longitudinal direction of the watch band 2 is achieved. Exit to is prevented. Thereby, the front end portion 16 of the watch band 2 on the 12 o'clock side is attached to the band attaching portion 8 on the 12 o'clock side of the watch case 1.

  On the other hand, when attaching the 6 o'clock side watch band 3 to the 6 o'clock side band attaching portion 8 of the watch case 1, as shown in FIG. 16, while fitting the fitting convex portion 23 provided in the band fitting portion 8 on the 6 o'clock side into the fitting concave portion 21, the both ends of the spring bar 19 are pressed to attach the protruding projection on the tip portion 16 of the watch band 3. 17 is fitted into the band attaching portion 8. Thereby, the fitting convex part 23 of the front-end | tip part 16 of the timepiece band 3 is fitted to the fitting concave part 21 of the band attaching part 8, and the both ends of the spring bar 19 are provided on both sides of the band attaching part 8. Insert into hole 20.

  At this time, as shown in FIGS. 2 and 9, the engagement protrusion 22 of the tip 16 of the watch band 3 is between the pair of protrusions 10b and 11b corresponding to both sides of the end of the band mounting portion 8 on the 6 o'clock side. Engage with. For this reason, the both sides of the engagement protrusion 22 formed in a substantially inverted trapezoidal shape are locked to the inner portions of the pair of protrusions 10b and 11b, so that the watch band 2 is pulled out in the longitudinal direction. Be blocked. As a result, the front end portion 16 of the 6 o'clock side watch band 3 is attached to the 6 o'clock side band attaching portion 8 of the watch case 1.

  Thus, according to this wristwatch, the pair of protrusions 10a, 11a and 10b, 11b are provided on the back surface of the watch case 1 corresponding to both sides of each end of the band attaching portion 8 located on both sides of the watch case 1. The timepieces 2 and 3 that are provided at predetermined intervals and are attached to the band attachment portions 8 on both sides are engaged with the tip portions 16 between the pair of projections 10a and 11a or 10b and 11b. Since the engagement protrusions 22 for preventing the bands 2 and 3 from being pulled out in the longitudinal direction are provided, the front end portions 16 of the watch bands 2 and 3 are attached to the spring bars 19 on the band attachment portions 8 of the watch case 1. , The engagement protrusions 22 provided at the front ends 16 of the watch bands 2 and 3 are respectively connected between the pair of protrusions 10a and 11a provided on the back surface of the watch case 1. 10b, respectively engaged between 11b prevents escape of the longitudinal direction of the watch band 2 and 3.

  For this reason, even if an external force in the vertical direction and torsional direction is applied to the watch bands 2 and 3 in this state, the external force applied to both ends of the spring bar 19 is applied between the pair of protrusions 10a and 11a and between the pair of protrusions 10a and 11b, respectively. It can be received and reduced by the engaging protrusions 22 to be engaged, and each tip 16 of the watch bands 2 and 3 can be pulled out from the band attaching portions 8 along the longitudinal direction of the watch bands 2 and 3. Even if an external force is applied to each of the watch bands 2 and 3, the external force is not directly applied to both ends of the spring bar 19, and each of the engaging protrusions 22 engaged between the pair of protrusions 10 a and 11 a or 10 b and 11 b. Therefore, the external force can be reliably received, and thereby the strength of attaching the watch bands 2 and 3 by the spring bar 19 can be sufficiently secured.

  In this case, in particular, the fitting recesses 21 are respectively provided on the inner upper surfaces of the band attachment portions 8 on both sides, and the fittings that are fitted into the fitting recesses 21 of the band attachment portions 8 are fitted to the respective front end portions 16 of the watch bands 2 and 3. Since the convex portions 23 are provided, the external forces in the vertical direction and the torsional direction are applied to the watch bands 2 and 3, and the tip portions 16 of the watch bands 2 and 3 are moved from the respective band mounting portions 8 to When an external force in the direction of pulling out along the longitudinal direction is applied, due to each fitting force between each fitting concave portion 21 of the band attaching portion 8 on both sides and the fitting convex portion 23 of each tip portion 16 of the watch bands 2 and 3, The external force can be received and reduced, and therefore the mounting strength of the watch bands 2 and 3 by the spring bar 19 can be further increased.

  Further, in this wristwatch, the pair of protrusions 10a, 11a located on the 12 o'clock side or the pair of protrusions 10b, 11b located on the 6 o'clock side is provided on each of the band attachment portions 8 provided on both sides of the watch case 1. Since it is provided corresponding to both sides of the end portion, when the watch case 1 is attached to the arm by the watch bands 2 and 3, each pair of protrusions 10a, 11a and 10b located on both sides of the watch case 1 is provided. 11b abuts on the arm, and as shown in FIG. 5, between the back surface of the watch case 1 and the front surface of the arm, the watch case 1 extends along the direction perpendicular to the longitudinal direction of the watch bands 2 and 3. A continuous gap S is formed between the 3 o'clock side end and the 9 o'clock side end. For this reason, even if a part of the arm surface comes into contact with the back surface of the watch case 1, the air permeability between the back surface of the watch case 1 and the surface of the arm can be secured by the gap S.

  In this case, the pair of protrusions 10a and 11a located on the 12 o'clock side and the pair of protrusions 10b and 11b located on the 6 o'clock side are made of the synthetic resin softer than the watch case 1 such as urethane resin with the watch case 1. Since the wristwatch case 1 is formed of a hard synthetic resin, for example, ABS resin, all the protrusions 10a, 11a, 10b, and 11b are attached to the arm when the wristwatch case 1 is attached to the arm. Since it is softly contacted, it is easy to attach to the arm, and the wristwatch case 1 can be satisfactorily attached to the arm for fitting.

  Further, of the pair of protrusions 10a, 11a and 10b, 11b respectively corresponding to both sides of each end of the band attaching portion 8 provided on both sides of the watch case 1, the band attaching located on both sides of the watch case 1 Since the protrusions 10a, 10b or 11a, 11b of the parts 8 are connected by the connection parts 12, 13, respectively, the protrusions 10a, 11a corresponding to both sides of each end of the band attaching part 8 on both sides, respectively. 10b, 11b, the increase in the number of parts as the protrusions 10a, 10b, 11a, 11b can be suppressed, and each protrusion 10a, 11a, 10b, 11b can be individually connected to the wristwatch case 1. A pair of protrusions 10a, 11a located on the 12 o'clock side or a pair of protrusions 10b located on the 6 o'clock side 11b can be attached to the respective projecting members 10, 11 in the wristwatch case 1 at the same time, thereby making it possible to simplify the assembling work.

  Further, the watch bands 2 and 3 have a good fit of the band main body 15 with respect to the arm because the band main body 15 is formed of a soft urethane resin. By including the distal end portion 16 including urethane resin harder than the band main body portion 15, the holding force of the distal end portions 16 of the watch bands 2 and 3 with respect to the watch case 1 can be increased. For this reason, even if the external force in the vertical direction and the twist direction and the external force in the direction of pulling out each tip 16 along the longitudinal direction of the watch bands 2 and 3 are applied to the watch bands 2 and 3, the watch case 1 and the watch band 2 3 can be kept to a minimum.

  In the first embodiment, the protrusions 10a, 10b, 11a, and 11b corresponding to both sides of each end portion of the band attachment portions 8 on both sides are connected to the connection portions 12 and 13 for each band attachment portion 8 on both sides. However, the present invention is not limited to this, and for example, as shown in FIG. 11, all the protruding portions 10a, 10b, 11a, and 11b are connected to the connecting portion 25. It is also possible to use a configuration in which the two are integrally connected. With this configuration, the number of parts as the protrusions 10a, 10b, 11a, and 11b can be further reduced as compared with the first embodiment, and all the protrusions 10a, 10b, 11a, and 11b can be watched at a time. Since it can be attached to the case 1, the assembling work can be further simplified and the productivity can be improved.

(Embodiment 2)
Next, a second embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as Embodiment 1 shown by FIGS.
This watch has a configuration different from that of the first embodiment in each of the shapes of the wristwatch case 30, the tip portions 37 of the watch bands 31, 32, and the pair of projecting members 34, 35, and other configurations are substantially the same as those of the first embodiment. It has the same configuration.

  That is, the entire watch case 30 is formed in a substantially circular shape. Accordingly, the 12 o'clock side band attaching portion 33 and the 6 o'clock side band attaching portion 33 are symmetrical to each other and are formed in the same shape. Also in this case, the band attaching portion 33 is formed in a concave shape opened on the lower surface side (upper surface side in FIG. 14), as in the first embodiment, and the attachment holes 20 are opposed to each other on both sides inside thereof. The fitting recess 21 is provided along the insertion hole 18 of the spring bar 19 on the upper surface (lower surface side in FIG. 14).

  In addition, on the back surface of the watch case 30, as in the first embodiment, a pair of projecting members 34 and 35 that contact the arm are respectively located along the 3 o'clock side and the 9 o'clock side with the band mounting portions 3 on both sides as a boundary. Is provided. The pair of protruding members 34 and 35 are also formed of a synthetic resin that is softer than the wristwatch case 30, for example, a urethane resin. Of the pair of projecting members 34 and 35, the 3 o'clock side projecting member 34 is, as shown in FIGS. 13 and 14, one end portion of the band attaching portion 33 located on the 12 o'clock side, that is, the 3 o'clock side ( 14 includes a protrusion 34a corresponding to an end portion on the left side and a protrusion 34b corresponding to one end portion of the band mounting portion 33 located on the 6 o'clock side, that is, the end portion on the 3 o'clock side. , 34b are connected by the connecting part 12 as in the first embodiment.

  Similarly to the 3 o'clock side projection member 34, the 9 o'clock side projection member 35 corresponds to the other end of the band mounting portion 33 located on the 12 o'clock side, that is, the end on the 9 o'clock side (right side in FIG. 14). And a projection 35b corresponding to the other end of the band mounting portion 33 located on the 6 o'clock side, that is, the end on the 9 o'clock side. These projections 35a and 35b are the same as in the first embodiment. It is the structure connected by the connection part 13. As a result, the protruding members 34 and 35 are substantially semicircular, and both are formed in the same shape, and the protruding portions 34a and 34b and 35a and 35b at both ends are respectively connected to the watch case 30 by screws 14. Is attached together with the back cover 6 to the back surface.

  Also in this case, the pair of protrusions 34a and 35a corresponding to the band mounting part 33 on the 12 o'clock side among the protrusions 34a, 34b, 35a, and 35b has a predetermined interval as shown in FIGS. In a separated state, they are arranged symmetrically on both sides of the end portion of the band mounting portion 33 on the 12 o'clock side. In addition, the pair of protrusions 34b and 35b corresponding to the 6 o'clock side band attaching portion 33 are also arranged symmetrically on both sides of the end portion of the 6 o'clock side band attaching portion 33 with a predetermined distance therebetween. . Thus, the pair of protrusions 34a, 35a on the 12 o'clock side and the pair of protrusions 34b, 35b on the 6 o'clock side have the same shape, and their intermediate portions are the central portions of the band mounting portions 33 on both sides. Is consistent with

  On the other hand, in the case of the watch bands 31 and 32, the band main body portion 36 is formed of a soft urethane resin, and the tip end portion 37 of the band main body portion 36 is formed of a urethane resin harder than the band main body portion 36, as in the first embodiment. The structure is integrally formed by insert molding or two-color molding. In this case, the tip portions 37 of the watch bands 31 and 32 are each provided with a mounting projection 17 to be inserted into each band mounting portion 33 of the watch case 30 as in the first embodiment, and the mounting projection 17 is a band main body portion. The spring bar 19 is inserted into the insertion hole 18 provided in the mounting projection 17 and provided at the front end surface of the mounting projection 17, and both end portions of the spring bar 19 are opposed to both sides in the band mounting portion 33. By being inserted into the provided mounting holes 20, each band mounting portion 33 is configured to be mounted by the spring bar 19.

  Further, of the timepiece bands 31 and 32, the front end portion 37 of the timepiece band 31 positioned on the 12 o'clock side, that is, the front end of the mounting projection 17 is engaged between the pair of protrusions 34 a and 35 a on the 12 o'clock side. An engagement protrusion 38 for preventing the watch band 31 from coming out in the longitudinal direction is provided. Similarly to the first embodiment, the engagement protrusion 38 is engaged between the pair of protrusions 34a and 35a and disposed on the back surface of the back cover 6, and the front end side of the engagement protrusion 38 is a pair of protrusions. It is formed in a substantially inverted trapezoidal shape that extends while extending toward the center of the watch case 30 along the portions 34a and 35a.

  In this case, the engagement protrusion 38 is provided with a pair of protrusions 34 a and 35 a corresponding to the center of the band attachment portion 33, so that the center portion is an attachment protrusion at the tip 37 of the watch band 31. 17 and a pair of protrusions 34a and 35a that are symmetrical to each other and have the same shape, so that they are formed in a substantially inverted trapezoidal shape that is symmetrical to the left and right. As a result, the engaging protrusions 38 are prevented from coming out in the longitudinal direction of the watch band 31 by engaging both sides of the inverted trapezoidal shape with the inner portions of the pair of protrusions 34a and 35a. It is configured.

  On the other hand, the tip 37 of the watch band 32 located on the 6 o'clock side, that is, the tip of each mounting projection 17 is also located between the pair of projections 34b and 35b on the 6 o'clock side, like the watch band 31 on the 12 o'clock side. Engagement protrusions 38 that engage and prevent the watch band 32 from coming out in the longitudinal direction are provided. Similarly to the engagement protrusion 38 on the 12 o'clock side, the engagement protrusion 38 is engaged between the pair of protrusions 34b and 35b and arranged on the back surface of the back cover 6, and each engagement protrusion The tip end side of 38 is formed in a substantially inverted trapezoidal shape that extends while extending toward the center side of the watch case 30 along the pair of protrusions 34b and 35b.

  Also in this case, the engagement protrusion 38 is provided with a pair of projections 34 b and 35 b corresponding to the center of the band attachment 33, so that the center is attached to the tip 37 of the watch band 32. The pair of protrusions 34b and 35b are provided symmetrically with the central part of the protrusion 17 and are symmetrical with each other and have the same shape, thereby forming a substantially symmetrical trapezoidal shape. As a result, the engagement protrusions 38 are also prevented from coming out in the longitudinal direction of the watch band 32 by engaging both sides of the inverted trapezoidal shape with the inner sides of the pair of projections 34b and 35b. It is configured.

  Further, the front end portions 37 of the watch bands 31 and 32, that is, the upper surfaces of the respective mounting projections 17 are fitted into the fitting recesses 21 provided on the inner upper surface of the band mounting portion 33 as in the first embodiment. Joint protrusions 23 are provided. The fitting projection 23 is provided along the insertion hole 18 into which the spring bar 19 is inserted, and the engagement protrusions 38 provided at the tip portions 37 of the watch bands 31 and 32 are connected to the band attachment portions 33. When engaged between a pair of protrusions 34a, 35a and 34b, 35b corresponding to both sides of the end, it is configured to be fitted into the fitting recess 21 of each band mounting portion 33 as in the first embodiment. ing.

  Such a wrist watch has the same effects as those of the first embodiment. In particular, the wrist watch case 30 is formed in a circular shape, and accordingly, the band attaching portions 33 on the 12 o'clock side and the 6 o'clock side are both connected. Since both are symmetrical and formed in the same shape, the pair of protrusions 34a, 35a and 34b, 35b corresponding to both ends of each band mounting portion 33 are also formed in the same shape in the left-right symmetry. The front end portions 37 of the watch bands 31 and 32 attached to the band attaching portion 33 are also formed symmetrically and in the same shape, whereby the attachment protrusions 17 and the engagement portions 17 provided on the respective front end portions 37 of the watch bands 31 and 32 are engaged. The joint protrusion 38 and the fitting protrusion 23 are all symmetrical and have the same shape. For this reason, the front-end | tip part 37 of the wristwatch case 30, a pair of protrusion members 34 and 35, and the timepiece bands 31 and 32 can be easily shape | molded, and, thereby, a low-cost and highly productive thing can be obtained.

  In the second embodiment, the protrusions 34a, 34b, 35a, and 35b corresponding to both sides of the end portions of the band attaching portions 33 on both sides are connected to the band attaching portions 33 on both sides by the connecting portions 12 and 13, respectively. In the above description, the two projecting members 34 and 35 are connected to each other. However, the present invention is not limited to this. For example, as in the modification shown in FIG. 11, all the projecting portions 34a, 34b, 35a, and 35b are connected. The structure connected integrally by the connection part 25 may be sufficient.

  In the first and second embodiments, the protrusions 10a, 10b, 11a, 11b, or 34a, 34b, 35a, 35b corresponding to both sides of the end portions of the band attaching portions 8 or 33 on both sides are provided as a watch case. Although the case where it was formed separately from 1 was described, it is not limited to this, and it may be formed integrally with the wristwatch case 1 or 30. In this case, the protrusions 10a, 10b, 11a, 11b, or 34a, 34b, 35a, 35b may be integrally formed of the same material as the watch case 1 or 30, but more than the watch case 1 or 30. When the soft material, for example, the watch case 1 or 30 is made of ABS resin, it is desirable to form it integrally by insert molding or two-color molding with a softer urethane resin.

  Further, in the first and second embodiments, only the front end portions 16 and 37 including the attachment projection 17, the fitting projection 23, and the engagement projections 22 and 38 in the watch band 2, 3 or 31, 32 are attached to the band. Although the case where it formed with urethane resin harder than the main-body parts 15 and 36 was described, not only this but the band main-body part 15 containing the decoration part 15a, for example like the 1st modification shown to Fig.17 (a), A configuration may be adopted in which all of the tip side portions of 36 are formed of urethane resin harder than the band main body portions 15 and 36 to increase the connection strength with the band main body portions 15 and 36, and the first embodiment shown in FIG. As in the second modification, a protrusion 41 for biting is provided at the tip 40, and the protrusion 41 is cut into the tip of the band main body 15 or 36 to increase the connection strength with the band main body 15 or 36. A configuration may be used.

(Embodiment 3)
Next, a third embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. Also in this case, the same portions as those in the first embodiment shown in FIGS.
This watch has a configuration in which a watch band 51 is attached to a watch case 50 with a screw 14 without using the spring bar 19, and the other configuration is substantially the same as that of the first embodiment.

  That is, the watch case 50 is made of a hard synthetic resin, for example, ABS resin, like the first embodiment, the watch glass 4 is attached to the upper surface thereof, the watch module 5 is accommodated therein, and the metal back is provided at the lower portion. The lid 6 is configured to be attached via a waterproof packing 6a. Also in this case, the wristwatch case 50 is formed in a horizontally long semi-elliptical rectangular shape in which the 9 o'clock side (9H) protrudes in a substantially arc shape as in the first embodiment. Further, on each side portion of the wristwatch case 50 at 3 o'clock side (3H) and 9 o'clock side (9H), and at each upper surface portion of 12 o'clock side (12H) and 6 o'clock side (6H), push buttons are respectively provided. A switch 7 is provided, and on each side of the wristwatch case 50 at the 12 o'clock side and the 6 o'clock side, band attaching portions 8 are provided so as to be biased toward the 3 o'clock side.

  On the other hand, the watch band 51 is attached to the band attaching portions 8 on the 12 o'clock side and the 6 o'clock side of the watch case 50, and both of them have almost the same configuration. The watch band 51 attached to the attachment portion 8 will be described. In the watch band 51 as well, the band main body 52 and the tip end 53 of the band main body 52 attached to the band attachment 8 of the watch case 50 are formed of different materials, as in the first embodiment. That is, the band main body portion 52 is made of a soft urethane resin, and the tip end portion 53 of the band main body portion 52 is made of a urethane resin harder than the band main body portion 52, and both are integrally formed by insert molding or two-color molding. ing.

  As shown in FIGS. 18 to 20, an extension portion 54 extending to the outer peripheral edge of the lower surface of the back cover 6 disposed on the lower surface of the watch case 50 is integrally formed at the distal end portion 53 of the band main body portion 52. ing. The extended portion 54 is configured to attach the watch band 51 to the band attaching portion 8 of the watch case 50 by being screwed to the watch case 50 with the screw 14 with the back cover 6 interposed therebetween. In this case, as shown in FIGS. 18 to 20, a pair of projecting portions 55 that contact the arm is directed to the lower side of the back cover 6 on both sides of the extended portion 54 at the 3 o'clock side and the 6 o'clock side. In a state protruding in a mountain shape, they are integrally formed at a predetermined interval.

  19 and 20, the screw insertion holes 56 into which the screws 14 are inserted correspond to the screw insertion holes 6b of the back cover 6 and the screw holes 50a of the watch case 50, respectively. Is provided. The pair of protrusions 55 are provided with counterbore portions 57 into which the head portions 14 a of the screws 14 are inserted, corresponding to the screw insertion holes 56, respectively. Note that the 6 o'clock side watch band (not shown) attached to the 6 o'clock side band attaching portion 8 of the watch case 50 is configured in the same manner as the 12 o'clock side watch band 51.

  When such a watch band 51 is attached to the band attaching portion 8 of the watch case 50, the watch case 50 to which the watch glass 4 is attached is turned upside down to place the watch module 5 in the watch case 50, The back cover 6 is arranged on the back surface of the watch case 50 (in this state, the back surface is located on the upper side), and in this state, the front end portion 53 of the band main body portion 52 of the watch band 51 is attached to the band mounting portion 8 of the watch case 50. Deploy.

  At this time, the extending portion 54 formed at the front end portion 53 of the band main body portion 52 is disposed on the outer peripheral edge of the back surface of the back cover 6 (in this state, the back surface is located on the upper side). The screw insertion holes 56 of the pair of projecting portions 55 provided in the base plate 6 correspond to the screw insertion holes 6 b of the back cover 6 and the screw holes 50 a of the watch case 50. In this state, the screw 14 is inserted into the screw insertion holes 56 of the pair of protrusions 55 provided on both sides of the extension portion 54 of the watch band 51, and the tip end portion of the inserted screw 14 is inserted into the screw of the back cover 6. It is screwed into the screw hole 50a of the watch case 50 through the hole 6b. Thereby, the watch band 51 is attached to the band attaching portion 8 of the watch case 50.

  Thus, according to this wristwatch, the front end 53 of the watch band 51 disposed on the band mounting portion 8 of the watch case 50 extends to the outer peripheral edge of the back surface of the back cover 6 disposed on the back surface of the watch case 50. Since the extended portion 54 is provided, and the extended portion 54 is attached to the watch case 50 by the screw 14 with the back cover 6 interposed therebetween, the watch band 51 is not used without using the spring bar 19 as in the first or second embodiment. Can be securely attached to the band attaching portion 8 of the watch case 50 together with the case back 6. For this reason, it is possible to simplify the attaching operation for attaching the watch band 51 and the back cover 6 to the watch case 50, and pull the watch band 51 along the longitudinal direction of the watch band 51 in addition to the vertical direction and the twist direction. Even if an external force is applied in the direction, the external force can be reliably received by the screw 14, and thereby the mounting strength of the watch band 51 can be sufficiently secured.

  In this case, on both sides of the extension portion 54, a pair of protrusions 55 are provided at a predetermined distance apart from each other so as to protrude toward the back side of the back cover 6 and provided with screw insertion holes 56 into which the screws 14 are inserted. As a result, the pair of protrusions 55 can increase the attachment strength of the extended portion 54 of the watch band 51 by the screw 14, and the watch case 50 is attached to the arm by the watch band 51 as in the first embodiment. Sometimes, the pair of projections 55 provided on both sides of the extension 54 at the tip 53 of the watch band 51 abuts on the arm, so that the watch band 51 is between the back surface of the watch case 50 and the surface of the arm. A gap continuous from one end portion to the other end portion of the watch case 50 can be provided along a direction orthogonal to the longitudinal direction of the watch case 50. It is possible to ensure ventilation between.

  Further, the pair of protrusions 55 of the watch band 51 are provided with counterbore portions 57 into which the heads 14 a of the screws 14 are inserted, corresponding to the screw insertion holes 56, respectively. Even if the protruding portion 54 is attached to the watch case 50 with the screw 14, the head portion 14a of the screw 14 is inserted into the counterbore portion 57 of the protruding portion 55, so that the head portion 14a of the screw 14 material protrudes from the protruding portion 55. Thus, when the watch case 50 is attached to the arm by the watch band 51, the head 14a of the screw 14 does not come into contact with the arm. The watch case 50 can be attached to the arm.

  In this case, the watch band 51 is formed of a soft synthetic resin such as urethane resin, so that when the watch case 50 is attached to the arm by the watch band 51, the fit of the watch band 51 to the arm is good. Since the pair of protrusions 55 provided on the extension part 54 of the watch band 51 are attached to the watch case 50 with the screws 14, the watch band 51 is provided on the extension part 54 even if it is formed of a soft synthetic resin. The pair of protrusions 55 can sufficiently secure the mounting strength of the watch band 51.

  In the first to third embodiments and the modifications thereof, the case where the wrist wearing device is applied to a wristwatch has been described. However, the wristwatch is not necessarily a wristwatch, and a timepiece function such as a blood pressure measurement function or a blood glucose level measurement function. It can be widely applied to devices that are equipped with functions other than those used on the arm.

1 is a front view of a wristwatch to which the present invention is applied. (Embodiment 1) It is a reverse view of the wristwatch of FIG. It is the reverse view which decomposed | disassembled the principal part of FIG. It is the perspective view of the principal part which looked at the wristwatch of FIG. 1 from the back surface side. It is an expanded sectional view of the principal part in the AA arrow of FIG. It is an expanded sectional view of the principal part in the BB arrow view of FIG. It is an expanded sectional view of the principal part in CC arrow of FIG. It is the side view which showed the principal part of the timepiece band of FIG. It is the reverse view which decomposed | disassembled and showed the band attaching part in FIG. 2, and the front-end | tip part of a timepiece band. FIG. 10 is a front view showing the tip of the watch band of FIG. 9. It is the reverse view which showed the modification at the time of connecting all the projection parts in Embodiment 1. FIG. 1 is a front view of a wristwatch to which the present invention is applied. (Embodiment 2) It is a reverse view of the wristwatch of FIG. It is the reverse view which decomposed | disassembled the principal part of FIG. It is the front view which showed the principal part of the timepiece band of FIG. It is the side view which showed the principal part of the timepiece band of FIG. The modification of the front-end | tip part in a watch band is shown, (a) is sectional drawing of the principal part which showed the 1st modification, (b) is sectional drawing of the principal part which showed the 2nd modification. It is the perspective view of the principal part which looked at the wristwatch to which this invention was applied from the back side. (Embodiment 3) It is an expanded sectional view of the principal part in the DD arrow of FIG. It is an expanded sectional view of the principal part in the EE arrow view of FIG.

Explanation of symbols

1, 30, 50 Watch case 2, 3, 31, 32, 51 Watch band 6 Back cover 8, 33 Band mounting part 10, 11, 34, 35 Protruding member 10a, 11a, 34a, 35a, 10b, 11b, 34b, 35b Protruding part 12, 13, 25 Connecting part 14 Screw 15, 36, 52 Band main body part 16, 37, 53 Tip part of band main body part 17 Mounting protrusion part 18 Insertion hole 19 Spring bar 20 Mounting hole 21 Fitting concave part 22, 38 engagement protrusion 23 fitting protrusion 54 extension 55 protrusion 56 screw insertion hole 57 counterbore

Claims (11)

In the arm mounting device comprising a main body case and a band for attaching the main body case to the arm, and attaching the tip of the band to the band attaching portion provided on both sides of the main body case with an attachment rod,
On the back surface of the main body case corresponding to both sides of the end of the band attaching portion, at least a pair of protrusions that contact the arm are provided at a predetermined interval,
The arm mounting device according to claim 1, wherein an engagement protrusion that engages between the pair of protrusions to prevent the band from coming out in a longitudinal direction is provided at the tip of the band.   2. The arm mounting device according to claim 1, wherein the pair of projecting portions are provided corresponding to both sides of each end portion of the band attaching portion provided on both sides of the main body case.   The arm mounting device according to claim 1 or 2, wherein the pair of protrusions are formed separately from the main body case by a synthetic resin softer than the main body case.   The pair of protrusions corresponding to both sides of each end of the band mounting portion provided on both sides of the main body case is formed by connecting portions of the band mounting portions located on both sides of the main body case. The arm mounting device according to claim 3, wherein the arm mounting device is connected.   4. The pair of protrusions respectively corresponding to both sides of each end of the band mounting portion provided on both sides of the main body case are all connected by a connecting portion. 5. Arm wearing device.   In the band, the material of the band main body part and the tip part including the engagement protrusion in the band main body part are different, and the band main body part is formed of a soft synthetic resin, and the tip of the band main body part The arm mounting device according to any one of claims 1 to 5, wherein the portion is formed of a synthetic resin harder than the band main body portion.   A fitting recess is provided on the inner upper surface of the band mounting portion, and a fitting convex portion that fits into the fitting recess of the band mounting portion is provided at the tip of the band. The arm mounting device according to any one of claims 1 to 6. A main body case provided with band attaching portions on both sides, a back cover disposed on the back surface of the main body case, and a band disposed on the band attaching portion of the main body case for attaching the main body case to an arm; In the arm mounting device with
At the end of the band disposed in the band attaching portion, an extending portion extending to the back surface of the back cover is provided, and the extending portion is attached to the main body case with a screw member across the back cover. An arm mounting device characterized by that.   On both sides of the extended portion, a pair of protrusions that protrude toward the back side of the back cover and are provided with screw insertion holes into which the screw members are inserted are provided at predetermined intervals. The arm mounting device according to claim 8.   The arm mounting according to claim 8 or 9, wherein a counterbore portion into which the head portion of the screw member is inserted is provided on each of the pair of projection portions corresponding to the screw insertion hole. apparatus.   The arm mounting device according to any one of claims 8 to 10, wherein the band is formed of a soft synthetic resin.

Images