JP2024085464A - Band attachment device, wearing device and watch - Google Patents

Abstract

[Problem] A band attached to a main body case can be easily attached and detached. [Solution] A band attachment device 6 includes a band side attachment part 21 provided on a band 2 and having a first through hole 22 penetrating the band 2 in the width direction, a main body side band attachment part 11 provided on a main body case 1 and arranged on either side of the band side attachment part 21 and having a second through hole 14 communicating with the first through hole 22 in an attached state, a connecting pin 5 inserted into the first through hole 22 and the second through hole 14 from one side and attached to a connecting part between the band side attachment part 21 and the main body side band attachment part 11, and a cover part 32 covering at least one side of the connecting part into which the connecting pin 5 is inserted when the band side attachment part 21 and the main body side band attachment part 11 are connected. [Selected Figure] Figure 7

Description

The present invention relates to a band attachment device, a wearing device, and a watch.

Conventionally, the band has been attached to the main body case by using a spring bar or the like.
For example, Patent Document 1 describes a configuration in which the attachment end of the band (referred to as the tip segment in Patent Document 1) is attached to an attachment portion provided on the side of the bezel (referred to as the tip segment in Patent Document 1) using an attachment member such as a spring bar, and the bezel is then fixed to the case body, thereby attaching the band to the main case.

Japanese Utility Model Application Publication No. 5-60305

However, the configuration described in Patent Document 1 makes it difficult to easily attach and detach the band.

The present invention is intended to solve these problems, and aims to provide a band attachment device, a watch-wearing device, and a watch that can easily attach and detach a band attached to the main case.

In order to solve the above problems, the band attachment device according to the present invention comprises:
a band side attachment portion provided on the band and having a first through hole passing through the band in a width direction;
a main body side band attachment portion provided on the main body case, the main body side band attachment portion being disposed on either side of the main body side band attachment portion and including a second through hole communicating with the first through hole in an attached state;
a connecting pin that is inserted from one side of the second through hole of the main body side band attachment portion and is attached to a connecting portion between the band side attachment portion and the main body side band attachment portion;
a cover portion that covers at least the one side of the main body side band attachment portion into which the connecting pin is inserted in a state in which the band side attachment portion and the main body side band attachment portion are connected;
The present invention is characterized by having the following.

According to the present invention, the band attached to the main body case can be easily replaced.

FIG. 2 is a perspective view of the main parts of the timepiece according to the embodiment. FIG. 2 is an exploded perspective view of the main part of the timepiece shown in FIG. 1 . 11 is a perspective view of a main part showing how the main case and the band are connected to each other; FIG. 13 is a perspective view of a main part showing how a connecting pin is attached to a connecting portion between a main case and a band. FIG. 3 is a perspective view of a main portion of a bezel member as viewed in the direction of an arrow V in FIG. 2 . FIG. 2 is a perspective view of a main portion of a connecting pin according to the embodiment. 4 is a cross-sectional view of a main part, which shows a schematic diagram of a connecting portion that connects a main case and a band in the present embodiment, and its surroundings. FIG. FIG. 8 is an enlarged cross-sectional view of a portion VIII shown by a dashed line in FIG. 7 . FIG. 13 is a perspective view of a main portion showing a modified example of a connecting pin. 10 is a cross-sectional view of a main part, which shows a schematic view of a connecting portion that connects a main case and a band and its surroundings in a modified example in which the connecting pin shown in FIG. 9 is applied. FIG. FIG. 11 is a perspective view showing a main part of a modified example of the exterior member. FIG. 13 is a perspective view of a main part showing a modified example of the cover portion.

An embodiment of a band attaching device, a wearing device, and a watch according to the present invention will be described with reference to Figs. 1 to 8.
In the embodiment described below, the wearable device is an example of a wristwatch (hereinafter referred to as "watch 100") worn on the arm. In addition, the following embodiment is subject to various limitations that are technically preferable for implementing the present invention, but the scope of the present invention is not limited to the following embodiment and illustrated example. In the following, the x direction, y direction, and z direction refer to those shown in each figure. The x direction is the width direction of the watch 100 (the width direction of the watch body 10 and the band 2), and is the 3 o'clock-9 o'clock direction in an analog watch. The y direction is the 6 o'clock-12 o'clock direction in an analog watch, and is the longitudinal direction of the band 2. In addition, the z direction is the thickness direction (up-down direction) of the watch 100.

[overview]
Fig. 1 is a perspective view of the main parts of a watch, which is a wearable device equipped with a band attachment device in this embodiment, seen from the 6 o'clock side of an analog watch. Fig. 2 is an exploded perspective view of the main parts of the watch shown in Fig. 1. Note that the 12 o'clock side of the watch 100 is almost the same as when viewed from the 6 o'clock side, so it is not shown in Figs. 1 and 2.
As shown in Figures 1 and 2, a watch 100, which is a wearable device of this embodiment, includes a main case 1, a band 2 connected to the main case 1, and a band attachment device 6 (see Figure 7) that attaches the band 2 to the main case 1.
In this embodiment, a watch body 10 is constituted by including a main case 1 and a bezel member 3 (exterior member) attached to the main case 1, and the band 2 is attached to the watch body 10 by connecting it to the main case 1.

As described later, the band 2 of this embodiment has a band-side mounting portion 21 having a first through hole 22 penetrating the width direction of the band 2 (x direction in Figs. 1 and 2). The main body case 1 has a main body-side band mounting portion 11 (first main body-side mounting portion 12a) that is arranged on either side of the band-side mounting portion 21 and has a second through hole 14 that communicates with the first through hole 22 in the mounted state. The connecting pin 5 is inserted from one side (the right side in the x direction in Figs. 1 and 2 in this embodiment) into the first through hole 22 formed in the band-side mounting portion 21 and the second through hole 14 formed in the main body-side band mounting portion 11 (first main body-side mounting portion 12a). This maintains the connected state of the connecting portion 60 (see Fig. 7), which is the connecting portion that connects the band-side mounting portion 21 and the main body-side band mounting portion 11 (first main body-side mounting portion 12a). Then, with the band side attachment part 21 and the body side band attachment part 11 (first body side attachment part 12a) connected by the connecting pin 5, at least one side of the connecting part (connecting part 60) where the connecting pin 5 is inserted is covered by the cover part 32, so that the connecting pin 5 is held in place so that it does not come loose.

In this manner, in this embodiment, the band mounting device 6 (see Figure 7) is configured to include the body side band mounting portion 11 (particularly the first body side mounting portion 12a), the band side mounting portion 21, the connecting pin 5, and the cover portion 32.
Below, each component that makes up the band attachment device 6 and the watch 100 (wearing device) that is equipped with the band attachment device 6 will be described in detail.

[composition]
First, a main body case 1 constituting a watch main body 10 is formed in a hollow short column shape.
The material from which the main body case 1 is formed is not particularly limited, but it is formed from a hard material such as a hard synthetic resin, such as a super engineering plastic such as polyarylate (PAR) or an engineering plastic such as polyacetal (POM), or a metal, such as titanium or stainless steel (SUS).
Although not shown, a clock module is provided inside the main body case 1. The clock module includes various parts necessary for clock functions, such as a clock movement that moves hands to indicate the time, a display unit that displays information such as the time, and a circuit unit that drives and controls these.

FIG. 3 is a perspective view of the essential parts, showing how the main case and the band are connected to each other.
As shown in FIG. 3, on the outer side of the main case 1, at positions corresponding to the 6 o'clock side of an analog watch and to the 12 o'clock side (not shown), there are provided main case band attachment portions 11 for connecting the band 2 to the main case 1.
The body-side band attachment portion 11 includes a first body-side attachment portion 12a provided on one side (the right side in the x direction in FIG. 3, the 3 o'clock side in an analog watch, or the 9 o'clock side in the case of the body-side band attachment portion 11 located on the 12 o'clock side) where the connecting pin 5 is inserted when the band 2 is connected, and a second body-side attachment portion 12b provided on the other side (the left side in the x direction in FIG. 3, the 9 o'clock side in an analog watch, or the 3 o'clock side in the case of the body-side band attachment portion 11 located on the 12 o'clock side) across a band-side attachment portion 21 described later provided on the band 2 when the band 2 is connected.

The first body side mounting portion 12a and the second body side mounting portion 12b are a pair of left and right legs that protrude outward from the main body case 1. A receiving recess 13 that receives the band side mounting portion 21 is formed between the first body side mounting portion 12a and the second body side mounting portion 12b.
Of the body side band attachment portion 11, the first body side attachment portion 12a is provided on one side (the right side in the x direction in Figures 1 to 3) where the connecting pin 5 is inserted, and is formed with a second through hole 14 that penetrates in the width direction of the watch 100 (X direction, the 3 o'clock to 9 o'clock direction shown in Figure 3).

In this embodiment, a connecting portion 60 is formed as a connecting portion between the main body side band mounting portion 11 and the band side mounting portion 21 by arranging the band side mounting portion 21 in the receiving recess 13 of the main body side band mounting portion 11. Then, the connecting pin 5 is inserted from one side (the right side in the x direction in FIGS. 1 to 3 ) into a through hole (second through hole 14) formed in the main body side band mounting portion 11 and a through hole (first through hole 22) formed in the band side mounting portion 21, which will be described later, to maintain the connected state at this connecting portion 60.
Incidentally, by configuring the connecting pin 5 to be inserted from the right side of the connecting portion 60, the connecting operation becomes easier, particularly for right-handed users.

The second body-side mounting part 12b, which is provided on the other side (the left side in the x-direction in Figs. 1 to 3) of the body-side band mounting part 11 and sandwiches the band-side mounting part 21 received in the receiving recess 13, has a recess 15, which is a hole that does not penetrate to the other side (the left side in the x-direction in Figs. 1 to 3), formed on its inner surface (the surface on the receiving recess 13 side) at a position corresponding to the second through-hole 14 of the first body-side mounting part 12a.

FIG. 4 is a perspective view of the essential parts, showing how a connecting pin is attached to the connecting portion between the main case and the band.
4 and other figures, when the open end portion of the second through hole 14 on one side (the right side in the x direction in FIGS. 1 to 4) where the connecting pin 5 is inserted is defined as a first diameter portion 141, the inner diameter of a second diameter portion 142 formed contiguous to this first diameter portion 141 is smaller than the inner diameter of the first diameter portion 141. A step portion 143 is formed at the boundary between the first diameter portion 141 and the second diameter portion 142.

As described below, the connecting pin 5 inserted into the second through hole 14 has a pin head 51 and a shaft portion 52 with a smaller diameter than the pin head 51, and has an abutment surface 513 at the boundary between the pin head 51 and the shaft portion 52. When the connecting pin 5 is inserted from one side, the abutment surface 513 of the connecting pin 5 abuts against the step portion 143 and is positioned. In this way, the step portion 143 functions as a receiving surface that receives the abutment surface 513 of the connecting pin 5.

In order to position the connecting pin 5 with high precision, the step 143 is preferably provided in the main body side band mounting portion 11 of the main body case 1, which is made of a hard material, and more preferably in the first main body side mounting portion 12a, which is located not far from the pin head portion 51. The position where the step 143 is provided is not limited to the illustrated example. The step 143 is not limited to function as a receiving surface. For example, the end face of the tip portion of the shaft portion 52 of the connecting pin 5 may be used as an abutment surface, and the recess 15 in the second main body side mounting portion 12b may function as a receiving surface that receives this abutment surface. In this case, there is no need to provide the step 143 in the middle of the second through hole 14.

A locking protrusion 16 is formed on the outer surface of the first body side mounting portion 12a and the second body side mounting portion 12b to be locked to the bezel member 3, which is an exterior member and will be described later. The locking protrusion 16 is locked to a locking recess 322 (see FIG. 5) provided on the bezel member 3, which will be described later, and the position, shape, size, etc. of the locking protrusion 16 correspond to the position, shape, size, etc. of the locking recess 322 of the bezel member 3. In this embodiment, the locking protrusion 16 is a locking claw that widens downward, as shown in FIG. 4, etc.

The bezel member 3 constituting the watch body 10 is made of a flexible synthetic resin such as polyurethane (PUR). Note that the material from which the bezel member 3 is made is not limited to this. Each part of the bezel member 3 may be made of a different material.
5 is a perspective view of a main part of the bezel member as viewed in the direction of the arrow V in FIG. 2. FIG.
As shown in Figure 5, the bezel member 3 has a bezel main body 31 that is arranged to cover at least the outer peripheral edge of the viewing side of the main case 1, and a pair of cover portions 32 that are respectively connected to both ends of the bezel main body 31 in the y direction (i.e., the 6 o'clock side and the 12 o'clock side on an analog watch).

As shown in FIG. 1 and other figures, the bezel body 31 in this embodiment has a shape that covers from the outer peripheral edge of the main body case 1 on the viewing side to the side surface of the main body case 1 .
Furthermore, the cover portion 32 covers at least one side (the right side in the x-direction in FIGS. 1 to 4) of the connecting portion (i.e., connecting portion 60) into which the connecting pin 5 is inserted when the band side mounting portion 21 and the main body side band mounting portion 11 are connected. The cover portion 32 in this embodiment is formed in a substantially U-shape, and covers the top surface and the side surface on one side (the right side in the x-direction in FIGS. 1 to 4) and the side surface on the other side (the left side in the x-direction in FIGS. 1 to 4) of the connecting portion 60.

A storage recess 321 is formed on the inner surface of the portion of the cover 32 that covers one side of the side of the connecting portion 60 (the right side in the x direction in Figs. 1 to 4). The storage recess 321 is provided at a position corresponding to the pin head 51 (see Fig. 6) of the connecting pin 5 when the connecting pin 5 is inserted into the first through hole 22 and the second through hole 14, and is capable of storing the pin head 51 (at least the flange portion 511 of the pin head 51).

For example, as shown in Figure 2, when the cover portion 32 is placed from above the connecting portion 60 and the pin head 51 (at least the flange portion 511 of the pin head 51) is positioned within the accommodating recess 321, the pin head 51 side of the connecting pin 5 is pressed down by the cover portion 32, thereby preventing the connecting pin 5 from slipping out of the first through hole 22 and the second through hole 14.
Incidentally, it is preferable that the accommodating recess 321 has a shape and size that conforms as closely as possible to the shape of the portion of the pin head 51 that protrudes outward from the side of the connecting portion 60 (in this embodiment, the flange portion 511 of the pin head 51). This improves the adhesion of the cover portion 32 to the main body case 1, making it difficult for the cover portion 32 to float up from the connecting portion 60 and become detached.

As described above, the outer surface of the main body side band attachment portion 11 of the main body case 1, which is the outer surface of the connecting portion 60 in this embodiment (the right side surface of the first main body side attachment portion 12a and the left side surface of the second main body side attachment portion 12b), is provided with a claw-shaped locking protrusion 16 (see FIG. 4, etc.), and the inner surface of the portion of the cover portion 32 that covers the side surface on one side (the right side in the x direction in FIGS. 1 to 4) and the other side (the left side in the x direction in FIGS. 1 to 4) of the connecting portion 60 is formed with a locking recess 322 (see FIG. 5) having a shape corresponding to the shape of the locking protrusion 16 at a position corresponding to the locking protrusion 16 of the main body case 1. Note that it is not essential that the locking protrusion 16 is provided on both the outer surfaces of the connecting portion 60 on one side and the other side. For example, the locking protrusion 16 may be provided only on one side of the connecting portion 60 from which the pin head 51 of the connecting pin 5 protrudes. In this case, the locking recess 322 of the cover part 32 only needs to be provided at a position corresponding to the locking protrusion 16.

When the locking protrusion 16 is locked in the locking recess 322 formed in the cover portion 32 of the bezel member 3, the cover portion 32 adheres more firmly to the main case 1 side, making the cover portion 32 less likely to be turned up or come off.
In addition, it is sufficient that a locking protrusion is provided on either the cover part 32 or the main body case 1, and a locking recess is formed on either the main body case 1 or the cover part 32 to lock the locking protrusion, or the locking protrusion may be provided on the cover part 32 side, and a locking recess shaped to receive it may be provided on the main body case 1 side.

As shown in Figure 4 etc., in this embodiment, a locking protrusion 16 is provided on the outer surface of the first body side mounting portion 12a of the body side band mounting portion 11 of the main body case 1, in a position near where the second through hole 14 through which the connecting pin 5 is inserted is opened.
By engaging the cover portion 32 with the main case 1 at a portion close to the insertion position of the connecting pin 5, the pressing force with which the cover portion 32 presses the pin head portion 51 of the connecting pin 5 is also improved.

FIG. 6 is a perspective view showing the connecting pin of the present embodiment.
As shown in FIG. 6 , the connecting pin 5 has a pin head portion 51 and a shaft portion 52 connected to the pin head portion 51 .
The connecting pin 5 is made of a metal such as stainless steel (SUS), but the material for forming the connecting pin 5 is not limited to this.

The pin head 51 is a portion having a larger diameter than the shaft portion 52, and when the connecting pin 5 is inserted into the first through hole 22 and the second through hole 14, at least a portion of the pin head 51 protrudes outward from the side of the connecting portion 60. This protruding portion is the flange portion 511 that is housed in the aforementioned housing recess 321. The portion connected to the flange portion 511 is the head body 512. The diameter of the head body 512 corresponds to the inner diameter of the first diameter portion 141 in the second through hole 14 of the first body side mounting portion 12a.

The surface of the pin head 51 facing the outer surface of one side of the connecting portion 60 (i.e., the outer surface of the first body-side mounting portion 12a) has an inclined surface 514 that is inclined in a direction away from the connecting portion 60 in at least a portion of the circumferential direction. In this embodiment, the insertion side surface of the flange portion 511 is inclined in a tapered manner around the entire circumferential direction of the connecting pin 5, and this tapered surface becomes the inclined surface 514. When the main body case 1 and the band 2 are connected, a gap is formed between the inclined surface 514 and the outer surface of the connecting portion 60 (see Figures 7 and 8).

The shaft portion 52 is inserted into the connecting portion 60 when connected, and in the inserted state, its tip portion is disposed in the recess 15 of the second main body side mounting portion 12b.
The diameter of the shaft portion 52 is smaller than the diameter of the head body 512 of the pin head portion 51 and corresponds to the inner diameter of the second diameter portion 142 in the second through hole 14 of the first body side mounting portion 12a.
The boundary between the head body 512 and the shaft portion 52 forms an abutment surface, and when the connecting pin 5 is inserted into the second through-hole 14, it abuts against the step portion 143 which is a receiving surface, and is positioned.

In this embodiment, the band 2 is formed of a flexible synthetic resin such as polyurethane (PUR), or a hard synthetic resin such as engineering plastic or super engineering plastic. The material forming the band 2 is not limited to these, and the band 2 may be formed of a metal such as titanium or stainless steel (SUS), or may be formed of various types of leather, or may be formed by combining multiple types of different materials. The band 2 may be formed as a single piece from various resin materials, or may be formed to a predetermined length by connecting multiple band links.
In this embodiment, the band 2 is connected to the main case 1 in a detachable state by a user operation. For this reason, for example, a plurality of types of bands 2 made of different materials may be prepared so that the user can change the band 2 as appropriate according to preference or situation.

In either configuration, the band 2 has a band-side attachment portion 21 at the attachment end 20 to the main case 1. As shown in FIG. 3, etc., the band-side attachment portion 21 is a protrusion that is received in a receiving recess 13 formed in the main case 1's main case-side band attachment portion 11.

The band side attachment portion 21 has a first through hole 22 that penetrates the width direction of the band 2 (X direction in FIG. 1, etc.). As shown in FIG. 2 and FIG. 3, etc., a band pipe 4 is arranged inside the first through hole 22. The band pipe 4 is made of a metal such as stainless steel (SUS), and reinforces the connection part between the main body case 1 and the band 2. By arranging the band pipe 4 inside the first through hole 22, it is possible to increase the strength of the connection part 60 (see FIG. 7), which is the part where the band 2 and the main body case 1 are connected, especially when a force in the torsional direction is applied.

[Action]
Next, the operation of the band attachment device 6 of this embodiment and the watch 100, which is a wearable device equipped with the band attachment device 6, will be described.
When attaching the band 2 to the main body case 1, first, as shown in Fig. 2, the band pipe 4 is inserted into the band side attachment portion 21 of the band 2. Then, as shown in Figs. 2 and 3, the band side attachment portion 21 of the band 2 is fitted into the receiving recess 13 between the first body side attachment portion 12a and the second body side attachment portion 12b of the main body side band attachment portion 11 formed on the main body case 1 (see Fig. 4).

4, after the main body side band attachment part 11 and the band side attachment part 21 are fitted together, the connecting pin 5 is inserted from the shaft part 52 side into the first through hole 22 and the second through hole 14 from one side of the connecting part between them (the right side in the x direction, the 3 o'clock side of the analog watch). Inside the first through hole 22, the connecting pin 5 is disposed in the first through hole 22 via the band pipe 4. When the shaft part 52 is inserted into the first through hole 22 and the second through hole 14, the tip part of the shaft part 52 is inserted into the recess 15.
In this state, the shaft portion 52 of the connecting pin 5 is positioned within the second diameter portion 142 of the second through hole 14, and the head body 512 of the pin head portion 51 of the connecting pin 5 is positioned within the first diameter portion 141 of the second through hole 14, and the abutment surface 513 of the connecting pin 5 abuts against the step portion 143 in the second through hole 14, which serves as a receiving surface, and is positioned.

When the connecting portion 60, which is the connecting portion between the main body side band attachment portion 11 and the band side attachment portion 21, is connected by the connecting pin 5, the connected state between the main body case 1 and the band 2 is maintained.
When the connecting pin 5 is positioned within the second through-hole 14, only the flange 511 of the pin head 51 of the connecting pin 5 is disposed outside the connecting part 60. Then, between the outer surface of the connecting part 60 and a tapered inclined surface 514 formed on the side of the flange 511 facing the outer surface of the connecting part 60, a gap large enough to hook a jig, a claw, or the like is formed.

Once the connecting pin 5 is inserted into the connecting portion 60, the bezel member 3 is attached from above the main case 1 (the upper side in the Z direction in FIGS. 1 to 4). This completes the watch body 10.
Fig. 7 is a schematic cross-sectional view of a main part showing the connecting portion 60 and its periphery in a state where the bezel member 3 is attached. Fig. 8 is an enlarged cross-sectional view of a portion VIII surrounded by a dashed line in Fig. 7.
As shown in Fig. 7, in this embodiment, the top surface and both side surfaces of the connecting part 60 are covered by the cover part 32. In this state, as shown in Figs. 7 and 8, the flange part 511 of the connecting pin 5 protruding outward from the connecting part 60 is accommodated in the accommodation recess 321 of the cover part 32, and the connecting pin 5 is pressed down from the outside by the cover part 32 so as not to come off.

Furthermore, in this embodiment, a locking protrusion 16 is provided in the vicinity of the portion of the main body side band attachment portion 11 where the flange portion 511 of the connecting pin 5 protrudes. The locking protrusion 16 is locked to the locking recess 322 formed in the cover portion 32 of the bezel member 3, so that the bezel member 3 (cover portion 32 of the bezel member 3) adheres closely to the main body case 1 in the portion pressing the connecting pin 5 from the outside.

When removing the band 2 from the watch body 10 (the body case 1 of the watch body 10), first, a jig for removing a bezel member (not shown) is used to remove the bezel member 3 from the body case 1. Specifically, for example, a jig is inserted between the body case 1 and the bezel member 3, and the bezel member 3 including the cover portion 32 is hooked and removed.
When the cover portion 32 is removed from the main body case 1 (the connecting portion 60 which is the portion connecting the main body case 1 and the band 2), the protruding portion of the flange portion 511 of the connecting pin 5 is exposed. In this state, by hooking a jig, a claw, or the like into the gap between the tapered inclined surface 514 formed on the flange portion 511 of the connecting pin 5 and the outer surface of the connecting portion 60, the connecting pin 5 is pulled out from the connecting portion between the main body side band attachment portion 11 and the band side attachment portion 21.
This releases the connection between the main case 1 and the band 2, allowing the user to remove the band 2 from the main case 1 relatively easily without having to prepare any special tools or the like.

[effect]
As described above, the band attachment device 6 in this embodiment comprises: a band side attachment portion 21 that is provided on the band 2 and has a first through hole 22 that penetrates in the width direction of the band 2; a body side band attachment portion 11 that is provided on the main body case 1 and arranged on either side of the band side attachment portion 21 and has a second through hole 14 that communicates with the first through hole 22 in the attached state; a connecting pin 5 that is inserted into the first through hole 22 and the second through hole 14 from one side (in this embodiment, the right side in the x direction) and is attached to the connecting portion between the band side attachment portion 21 and the body side band attachment portion 11; and a cover portion 32 that covers at least one side of the connecting portion into which the connecting pin 5 is inserted when the band side attachment portion 21 and the body side band attachment portion 11 are connected.
This allows the band 2 to be easily fixed to the main case 1. In addition, by removing the cover portion 32 (in this embodiment, the entire bezel member 3), it is possible to easily access the connecting pin 5 that connects the main case 1 and the band 2. Therefore, even a user who does not have a dedicated tool (jig) can relatively easily replace the band 2.
By attaching the band 2 to the main case 1 using this type of band attachment device 6, the band 2 can be easily attached, detached, and replaced in a wearable device such as a watch 100, and it can be easily enjoyed by changing the band 2 depending on the location or purpose, for example.

The connecting pin 5 has a pin head portion 51 (a flange portion 511 of the pin head portion 51) at an end portion on one side (the right side in the x direction in this embodiment) that protrudes outward beyond the connecting portion 60, and the cover portion 32 covers at least this protruding portion (the flange portion 511 of the pin head portion 51.
This prevents the connecting pin 5 from coming loose when the cover portion 32 is attached, and therefore the connected state between the main case 1 and the band 2 can be maintained with a simple structure.

In addition, the surface of the pin head 51 facing the connecting portion 60 has an inclined surface 514 that inclines in a direction away from the connecting portion 60 over at least a portion of the circumferential direction (the entire circumference around the axis in this embodiment), and a gap is formed between the inclined surface 514 and the connecting portion 60.
This allows a jig or a claw to be hooked into the gap, and the connecting pin 5 can be pulled out from the connecting portion 60. Therefore, the connected state between the main case 1 and the band 2 can be easily released.

In addition, the second through hole 14 has a first diameter portion 141 on one side (in this embodiment, the right side in the x-direction) into which the connecting pin 5 is inserted, a second diameter portion 142 formed continuously with the first diameter portion 141 and having an inner diameter smaller than the inner diameter of the first diameter portion 141, and a step portion 143 formed at the boundary between the first diameter portion 141 and the second diameter portion 142, and the connecting pin 5 has an abutment surface 513 that abuts against the step portion 143, and the step portion 143 functions as a receiving surface that receives the abutment surface 513 of the connecting pin 5.
This allows the connecting pin 5 to be received within the main body side band attachment portion 11, which is made of a relatively hard material, and can be positioned with high precision.

The band pipe 4 is further disposed in the first through hole 22 of the band side attachment portion 21 , and the connecting pin 5 is disposed in the first through hole 22 via the band pipe 4 .
The band 2, including the band side attachment portion 21, is made of a flexible synthetic resin such as polyurethane (PUR), etc. For this reason, its strength is relatively low, and it is necessary to increase the strength of the connecting portion between the main case 1 and the band 2, especially when a torsional force is applied.
In this regard, by disposing a band pipe 4 made of metal or the like in the first through hole 22, the connection portion with the main case 1 can be reinforced.

In addition, the body side band mounting portion 11 includes a first body side mounting portion 12a provided on one side (in this embodiment, the right side in the x direction) where the connecting pin 5 is inserted, and a second body side mounting portion 12b provided on the other side across the band side mounting portion 21, and a second through hole 14 is formed in the first body side mounting portion 12a, and a recess 15 that does not penetrate to the other side is formed in the second body side mounting portion 12b.
By opening the hole for inserting the connecting pin 5 only on one side of the connecting portion 60 and blocking the other side, it is easy for the user to understand the direction in which to insert the connecting pin 5, and it is possible to prevent the user from accidentally inserting it from the opposite side.

Moreover, the cover portion 32 in this embodiment is formed integrally with an exterior member (in this embodiment, the bezel main body 31 ) that is arranged on the visible side of the main case 1 .
By forming the cover portion 32 constituting the band attachment device integrally with the exterior member, the number of parts can be reduced and the structure can be simplified.

[Modification]
Although the embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to such an embodiment, and various modifications are possible without departing from the gist of the present invention.

For example, in the present embodiment, the connecting pin 5 is integrally formed from the pin head portion 51 to the shaft portion 52 using a metal material or the like, but the configuration of the connecting pin is not limited to this.
9, a connecting pin 5a may be used in which a pin head 53 made of various resins or the like is attached to a shaft 52 made of a metal material or the like to form an integrated structure. The material from which the pin head 53 is made is not particularly limited, but polyurethane (PUR) or the like is used, for example.
In addition, the pin head 53 and the shaft portion 52 may be formed separately and then integrated by attaching the pin head 53 to the shaft portion 52, or they may be integrated by integrally molding different materials, such as a metal material and a synthetic resin.

FIG. 10 is a schematic cross-sectional view of the essential parts of a band attachment device and its periphery when the main case and the band are integrated using the connecting pin shown in FIG.
10, in this case as well, a part of the pin head 53 of the connecting pin 5a protrudes outside the connecting portion 60. This protruding portion is accommodated in the accommodation recess 321 formed in the cover portion 32.

In this configuration, since the pin head 53 accommodated in the accommodation recess 321 is made of a resin such as polyurethane, the cover part 32 is less likely to be scratched even if the cover part 32 is repeatedly attached and detached. For example, if the cover part 32 is designed to be made of a transparent or translucent material, scratches inside the accommodation recess 321, etc., are noticeable, which is not preferable.
In this regard, when the pin head 53 is made of resin, it is possible to prevent damage to the accommodation recess 321. In addition, by using a brightly colored resin or the like for the pin head 53, it is possible to enjoy the design by adding an accent color.

In this case, the boundary surface 533 between the pin head 53 and the shaft 52 serves as an abutment surface that abuts against the step 143 of the second through hole 14 , and the step 143 functions as a receiving surface that receives the surface 533 .
In this case, too, an inclined surface may be provided so as to form a gap between the outer surface of the connecting portion 60 and the inclined surface.

In addition to or instead of providing an inclined surface, a third through hole 17 that communicates with the first through hole 22 and the second through hole 14 and penetrates to the "other side" may be formed in the second body side mounting portion 12b, which is provided on the "other side" (in this embodiment, the left side in the x-direction) opposite the first body side mounting portion 12a across the band side mounting portion 21 (see Figure 10).
By providing the third through hole 17 penetrating to the "other side", when removing the connecting pin 5a from the connecting part 60, for example, a wire-like object can be inserted from the opening of the through hole (third through hole 17) on the "other side" and the connecting pin 5a can be pushed out from the tip side of the shaft part 52. In this case, it is not necessary to provide an inclined surface on the pin head side to ensure a gap between the connecting part 60 and a jig or claw to hook it. For example, when the pin head 53 is made of a resin such as polyurethane, the pin head 53 can be prevented from being damaged by the jig or the like by not configuring the pin head 53 to be hooked by the jig or the like.

Even if the pin head 51 is configured to have an inclined surface 514 as shown in FIG. 7, a third through hole that communicates with the first through hole 22 and the second through hole 14 as shown in FIG. 10 and penetrates to the "other side" may be formed in the second body side mounting portion 12b. In this case, when removing the connecting pin, a jig or claw may be hooked between the connecting pin and the connecting portion 60 and pulled out from the pin head side, or a wire or the like may be inserted through the third through hole and pushed out from the tip side of the shaft portion 52, and the user may remove it by any method that is easy for them.

In addition, in this embodiment, an example is given of the case where the cover portion 32 is formed integrally with an exterior member (in this embodiment, the bezel main body 31) that is arranged on the visible side of the main body case 1, but the configuration of the cover portion is not limited to this.
For example, as shown in FIG. 11, an exterior member (bezel) 7 arranged on the viewing side of the main case 1 and a cover portion 8 as shown in FIG. 12 may be formed separately.

In this case, too, a storage recess 81 for storing the protruding portion is provided in a portion of the cover portion 8 that corresponds to the protruding portion of the connecting pin (e.g., flange portion 511). Although not shown, in order to lock the cover portion 8 to the main body case 1 at a position near this storage recess 81, it is preferable to provide a locking protrusion on either the cover portion 8 or the main body case 1, and to form a locking recess on either the main body case 1 or the cover portion 8 for locking the locking protrusion. This improves the adhesion of the cover portion 8 to the main body case 1, making it difficult for the cover portion 8 to come off.

When the exterior member (bezel) 7 and the cover portion 8 are constructed as separate bodies in this way, only the cover portion 8 needs to be attached and detached when attaching and detaching the band 2, and there is no need to remove the exterior member (bezel) 7. This improves the freedom of design of the exterior member (bezel) 7.

In addition, in this embodiment, a second through hole 14 is provided in the first body side mounting portion 12a, which is provided on the right side in the x direction (the 3 o'clock side on an analog watch) of the body side band mounting portion 11, and an example is shown in which the connecting pin 5 is inserted into the connecting portion 60 from the right side in the x direction, but the insertion direction of the connecting pin 5 is not limited to this.
For example, a second through hole may be provided in the second body side mounting portion 12b located on the left side in the x direction (the 9 o'clock side in an analog clock), and the connecting pin 5 may be inserted into the connecting portion 60 from the left side in the x direction.
Also, different settings may be provided depending on the model, such as for right-handed and left-handed users.

In addition, for example, in the present embodiment, the case where the wearable device is a watch 100 is exemplified, but the wearable device to which the band attachment device 6 of the present invention can be applied is not limited to watches.
The device can be widely applied to any device that uses a band attached to the main case, such as various electronic devices such as smart watches and sports watches, and wearable devices that collect biometric information such as heart rate and blood flow in addition to the time.

Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-mentioned embodiments, but includes the scope of the invention described in the claims and its equivalents.

1 Body case 10 Watch body 11 Body side attachment portion 14 Second through hole 15 Recess 16 Locking protrusion 2 Band 21 Band side attachment portion 22 First through hole 3 Bezel member (exterior member)
31 Bezel body (exterior member)
32 Cover portion 321 Storage recess 322 Locking recess 5 Connecting pin 51 Pin head 52 Shaft portion 6 Band attachment device 60 Connecting portion 7 Exterior member (bezel)
8 Cover part 100 Watch (wearable device)

Claims (11)

a band side attachment portion provided on the band and having a first through hole passing through the band in a width direction;
a main body side band attachment portion provided on the main body case, the main body side band attachment portion being disposed on either side of the main body side band attachment portion and including a second through hole communicating with the first through hole in an attached state;
a connecting pin that is inserted from one side of the second through hole of the main body side band attachment portion and is attached to a connecting portion between the band side attachment portion and the main body side band attachment portion;
a cover portion that covers at least the one side of the main body side band attachment portion into which the connecting pin is inserted in a state in which the band side attachment portion and the main body side band attachment portion are connected;
A band attachment device comprising: the connecting pin has a pin head at the one end thereof, the pin head protruding outward beyond the connecting portion,
The cover portion covers at least a protruding portion of the pin head.
2. The band attachment device of claim 1. The surface of the pin head facing the connecting portion has an inclined surface inclined in a direction away from the connecting portion in at least a part of a circumferential direction, and a gap is formed between the inclined surface and the connecting portion.
3. The band attachment device of claim 2. The pin head is made of a resin material.
3. The band attachment device of claim 2. the second through hole has a first diameter portion on one side into which the connecting pin is inserted, a second diameter portion formed continuously with the first diameter portion and having an inner diameter smaller than an inner diameter of the first diameter portion, and a step portion formed at a boundary between the first diameter portion and the second diameter portion,
The connecting pin has a contact surface that contacts the step portion,
The step portion functions as a receiving surface that receives the contact surface of the connecting pin.
2. The band attachment device of claim 1. The apparatus further includes a band pipe disposed in the first through hole,
the connecting pin is disposed in the first through hole via the band pipe;
2. The band attachment device of claim 1. the main body side band attachment portion includes a first main body side attachment portion provided on one side into which the connecting pin is inserted, and a second main body side attachment portion provided on the other side across the band side attachment portion,
the second through hole is formed in the first body side mounting portion,
The second body side mounting portion is formed with a recess that does not penetrate to the other side.
2. The band attachment device of claim 1. the main body side band attachment portion includes a first main body side attachment portion provided on one side into which the connecting pin is inserted, and a second main body side attachment portion provided on the other side across the band side attachment portion,
the second through hole is formed in the first body side mounting portion,
a third through hole communicating with the first through hole and the second through hole and penetrating to the other side is formed in the second body side mounting portion;
2. The band attachment device of claim 1. The cover portion is integrally formed with an exterior member disposed on the visible side of the main body case.
2. The band attachment device of claim 1. A band attachment device according to any one of claims 1 to 9;
The main body case,
A band connected to the main body case;
A wearable device comprising: A band attachment device according to any one of claims 1 to 9;
The main body case,
A band connected to the main body case;
A watch comprising:

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