WO2024166625A1 - Wearable device, engagement structure, and band device - Google Patents

Abstract

A wearable device according to the present invention comprises a body part and a band part that can be attached to and removed from the body part. The band part comprises: a band connector in which an accommodation space is formed, and an insertion hole is formed at both ends in the width direction; and a spring bar arranged in the accommodation space. The spring bar comprises: a syringe formed in a cylindrical shape and narrowed at both ends; a first pin having a portion accommodated inside the syringe and a tip portion arranged such that the tip protrudes from one of the insertion holes; a second pin having a flange part, which has a portion accommodated inside the syringe and is arranged inside the accommodation space, and a tip portion, which is continuously formed with the flange part and has the tip protruding from the other insertion hole; and a spring accommodated inside the syringe to bias the first pin and the second pin outward in the width direction.

Description

Wearable device, engagement structure, band device

This technology relates to a wearable device, an engagement structure, and a band device.

Patent Document 1 discloses a wearable device that includes a clock unit (main body) and a band unit. In this wearable device, the clock unit and band unit are connected via a pair of connecting parts that are spaced apart in the width direction. The connecting parts are provided on the band unit and include a cylindrical syringe, a lever pin that is axially movable within the syringe and has a tip that protrudes from the syringe, and a spring that biases the lever pin within the syringe.

In the wearable device, the lever pins of the connection part engage with a pair of engagement holes provided in the watch part, thereby connecting the watch part and the belt part.

JP 2017-73429 A

In wearable devices, the band is detachable from the main body. However, if the tolerance of the band becomes large in a wearable device, it may become impossible to attach the band to the main body, or the band may become easily detached from the main body.

This technology was developed in consideration of the above issues, and aims to make it easier to attach and remove the band while reducing the tolerance of the band.

The wearable device of the present technology comprises a main body and a band portion detachable from the main body portion, the band portion comprising a band connector in which a storage space is formed and in which insertion holes are formed at both ends in the width direction, and a spring bar arranged in the storage space, the spring bar comprising a syringe formed in a cylindrical shape with both ends narrowed, a first pin having a tip portion that is partially housed within the syringe and arranged so that its tip protrudes from one of the insertion holes, a flange portion that is partially housed within the syringe and arranged in the storage space, and a second pin that is formed contiguous to the flange portion and has a tip portion that protrudes from the other insertion hole, and a spring that is housed within the syringe and biases the first pin and the second pin outward in the width direction.
As a result, the wearable device is able to reduce error in the length of the second pin protruding from the other insertion hole in the band connector by having the flange portion of the second pin abut against the inner wall surface of the storage space in the band connector.

FIG. 1 is a diagram showing a configuration of a wearable device according to an embodiment of the present technology. FIG. 2 is a view of the main module portion as seen from the front surface side. FIG. 2 is a view showing the main module section when unfolded. FIG. 4 is an explanatory diagram showing an electrical configuration of a main module body portion. 1A and 1B are diagrams showing the configuration of a sub-assembly band connector. This is a cross-sectional view taken along line VV in FIG. 5. 4 is a diagram showing the configuration of the upper end portion of the main module body portion. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7. FIG. 2 is a diagram showing a configuration of an inner link. 13A and 13B are diagrams illustrating the attachment of the sub-assembly band connector to the main module body. 13A and 13B are diagrams illustrating removal of the sub-assembly band connector from the main module body. 11A and 11B are diagrams illustrating the lengths of the sub-assembly band connector and the main module body. 1A and 1B are diagrams illustrating the configuration of an end portion of a band connector. FIG. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body according to Modification 1. 13 is a diagram showing the sub-assembly band connector engaged with the main module body. FIG. 13 is a diagram showing the sub-assembly band connector engaged with the main module body. FIG. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a second modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a second modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a second modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a second modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a third modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a third modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a third modified example. 13A and 13B are diagrams illustrating the configuration of a sub-assembly band connector and a main module body of a third modified example. 13A and 13B are diagrams showing modified examples of the sub-assembly band connector. 13A and 13B are diagrams showing modified examples of the sub-assembly band connector. 13A and 13B are diagrams showing modified examples of the sub-assembly band connector.

Hereinafter, with reference to the accompanying drawings, embodiments of the present technology will be described in the following order.
1. Configuration of the wearable device
2. Modifications
3. Summary of the embodiment
<4. This Technology>

1. Configuration of the wearable device
[1-1. Overall configuration of the wearable device]
FIG. 1 is a diagram showing a configuration of a wearable device 1 according to an embodiment of the present technology.
In the following description, the front side (opposite the wrist) of the wearable device 1 when worn on the wrist of a user is referred to as the front side, and the back side (the wrist side) is referred to as the back side. Also, the front-back direction is a direction that passes through the front side and the back side.
In addition, the direction in which the wearable device 1 extends is defined as the circumferential direction, and the direction perpendicular to the circumferential direction and the front-back direction is defined as the width direction.
In addition, when the wearable device 1 is worn on the wrist of a user and the user holds the forearm substantially horizontal to look at the clock unit 2, the direction facing upward is defined as the upward direction, and the direction facing downward is defined as the downward direction. Therefore, the up and down directions in FIG. 1 are the up and down directions, respectively.

1, a wearable device 1 according to an embodiment includes a watch unit 2, a band unit 3, and a main module unit 4, and is formed to extend in a ring shape as a whole. The wearable device 1 is worn, for example, on a user's wrist.
However, the wearable device 1 may be worn on a part other than the wrist as long as it is worn by the user when used.

The clock unit 2 is, for example, an analog clock. The clock unit 2, which is an analog clock, has a dial face, an hour hand, and a minute hand, and displays the time by pointing the hour hand and the minute hand to any position on the dial face.
The clock unit 2 may be a digital clock. When the clock unit 2 is a digital clock, it has a display unit made of a liquid crystal display or an organic EL display, and a screen imitating an analog clock or a digital clock is displayed on the display unit.

A pair of lugs 2a are provided at the top and bottom of the clock section 2, spaced apart in the width direction. The lugs 2a are formed so as to protrude upwards and downwards from the top and bottom, respectively.

The band portion 3 includes an upper band 3a, a lower band 3b, and two sub-assembly band connectors 5 (connector portions). Various types of band portions 3 are provided. The upper band 3a and the lower band 3b may have multiple links arranged in succession as shown in FIG. 1, for example, or may be formed integrally from rubber, leather, or the like. The band portion 3 can be replaced according to the user's mood, time, place, etc., for example.

One end of the upper band 3a is connected to the watch unit 2 by engaging with a pair of lugs 2a formed on the top of the watch unit 2 with pins or the like (not shown). A sub-assembly band connector 5 is attached to the other end of the upper band 3a, and the other end of the upper band 3a is connected to the main module unit 4 by engaging with the upper end of the main module unit 4 via the sub-assembly band connector 5.
One end of the lower band 3b is connected to the watch unit 2 by engaging with a pair of lugs 2a formed on the bottom of the watch unit 2 with pins or the like (not shown). A sub-assembly band connector 5 is attached to the other end of the lower band 3b, and the other end of the lower band 3b is connected to the main module unit 4 by engaging with the lower end of the main module unit 4 via the sub-assembly band connector 5.

In the wearable device 1, when the watch unit 2 and the band unit 3 are connected, they engage with each other so that they can rotate relative to each other. Also, in the wearable device 1, when the band unit 3 and the main module unit 4 are connected, they engage with each other so that they can rotate relative to each other.

Fig. 2 is a view of the main module 4 as viewed from the front side, and Fig. 3 is a view of the main module 4 as viewed from the back side when it is unfolded.
As shown in FIGS. 2 and 3 , the main module section 4 includes a main module body section 11 , an outer link 12 and an inner link 13 .
The main module body 11 has built-in electronic components that enable sensor functions, wireless communication functions, and the like, and functions as a so-called smart watch.
The main module body 11 is formed integrally with a main housing 21 and a sub-housing 22. In the main module body 11, electronic components such as a control unit 23 (see FIG. 4 ) are housed inside the main housing 21 and the sub-housing 22.

The main housing 21 is formed into a generally rectangular parallelepiped that is long in the circumferential direction and short in the width direction, and is curved along the circumferential direction (annular) as a whole.
A sub-housing portion 22 is provided at the center in the width direction of the back surface 21a of the main housing portion 21. The sub-housing portion 22 has a circumferential (vertical) length slightly shorter than that of the main housing portion 21, a width direction length approximately half that of the main housing portion 21, and is formed as a generally rectangular parallelepiped curved along the circumferential direction (annular) as a whole.

The main module body 11 is formed with a curved main housing 21 and sub-housing 22, so that when the wearable device 1 is worn by a user, the back surface 22a of the sub-housing 22 is positioned to follow the curve of the wrist.

The outer link 12 and the inner link 13 are formed in a frame shape. The outer link 12 is formed slightly larger than the inner link 13, so that the inner link 13 can be housed inside. The inner link 13 is also formed slightly larger than the sub-housing portion 22 of the main module body portion 11, so that the sub-housing portion 22 can be housed inside.

The upper end of the outer link 12 is rotatably connected to the lower end of the main module body 11 by a pin or the like (not shown). Also, the upper end of the inner link 13 is rotatably connected to the lower end of the outer link 12 by a pin or the like (not shown).

Buckle units 14 are provided on both ends of the width direction on the upper part of the outer link 12. The buckle units 14 have claw portions that can move in the width direction.

The lower part of the inner link 13 has engagement holes 63 formed at both ends in the width direction. The engagement holes 63 are formed in positions that face the buckle unit 14 when the inner link 13 is housed inside the outer link 12.

When the inner link 13 is housed inside the outer link 12, the claw portion of the buckle unit 14 engages with the engagement hole 63, so that the outer link 12 and the inner link 13 are engaged so as not to rotate relative to each other. When the outer link 12 and the inner link 13 are engaged, the state in which the sub-housing unit 22 is housed inside the inner link 13 corresponds to the state in which the wearable device 1 is worn on the user's wrist (see Figures 1 and 2).

On the other hand, when the claw portion of the buckle unit 14 is removed from the engagement hole 63 and the outer link 12 and the inner link 13 are no longer engaged with each other as shown in FIG. 3, the wearable device 1 can be removed from the user's wrist.

FIG. 4 is an explanatory diagram showing the electrical configuration of the main module body 11. As shown in FIG. 4, the main module body 11 accommodates a control unit 23, a battery 24, a display unit 25, a memory unit 26, a non-contact communication unit 27, a wireless communication unit 28, an LED 29, and a sensor module 30 inside a main housing unit 21 and a sub-housing unit 22.

The control unit 23 is a computer including a CPU, ROM, and RAM, and controls the overall operation of the main module body 11. For example, the control unit 23 controls the turning on and off of the LED 29, the starting and stopping of the sensor module 30, the non-contact communication performed by the non-contact communication unit 27, the wireless communication performed by the wireless communication unit 28, etc.

The battery 24 is a secondary battery that supplies power to each component of the main module body 11.

The display unit 25 is configured with a display such as a liquid crystal display or an organic EL display, and is arranged on the surface of the main housing 21. The display unit 25 displays various images (screens) based on the control of the control unit 23.

The memory unit 26 stores information used in the operation of the main module body 11. For example, the memory unit 26 stores a program for the operation of the control unit 23 and information detected by the sensor module 30.

The non-contact communication unit 27 is an interface for performing non-contact communication with other communication devices. Examples of use cases for non-contact communication between the non-contact communication unit 27 and other communication devices include payment of product prices at retail stores, payment of fares at station ticket gates, and identity authentication.

The wireless communication unit 28 is an interface for performing wireless communication with other communication devices, which has a wider communication range than non-contact communication. The wireless communication unit 28 may perform wireless communication using a wireless LAN or Bluetooth (registered trademark). The wireless communication unit 28 is used, for example, when transmitting information detected by the sensor module 30 to a smartphone used by the user.

The three LEDs 29 are arranged in a circumferential (vertical) row on the rear surface 22a of the sub-housing portion 22. That is, the LEDs 29 are arranged so that they can irradiate light toward the wrist of a user wearing the wearable device 1. The three LEDs 29 can irradiate light of different wavelengths.

The sensor module 30 is a module for detecting one or more physical quantities. In the example shown in FIG. 4, the sensors included in the sensor module 30 are a pulse sensor 30a, an acceleration sensor 30b, and a gyro sensor 30c. The sensors included in the sensor module 30 are not limited to the example shown in FIG. 4, and the sensor module 30 may include other sensors, or may not have some or all of the sensors shown in FIG. 4.

3, the pulse sensor 30a of the sensor module 30 is disposed on the back surface 22a side of the sub-housing unit 22 so as to face the wrist of the user wearing the wearable device 1. The pulse sensor 30a receives light that is emitted from the LED 29 and reflected inside the user's body, and measures the pulse based on the intensity of the received light.

[1-2. Configuration of sub-assembly band connector]
Fig. 5 is a diagram showing the configuration of the sub-assembly band connector 5. Fig. 6 is a cross-sectional view taken along line VV in Fig. 5. Fig. 5 is a diagram showing the sub-assembly band connector 5 as viewed from the back side.

As shown in Figures 5 and 6, the sub-assembly band connector 5 includes a band connector 31 and a spring bar 40. The band connector 31 has a storage space 32 that is open on the front side at the very tip side (lower side in Figure 5) of the band portion 3. The storage space 32 is approximately cylindrical in shape and is formed so that its central axis is aligned with the width direction.

In the band connector 31, a pair of end portions 33 are formed in contact with both ends of the storage space 32 in the width direction, and a back surface portion 34 is formed in contact with the back surface side of the storage space 32. Therefore, it can be said that the end portions 33 extend from both ends of the back surface portion 34 toward the front surface side.

An insertion hole 35 is formed in each end 33, and the insertion hole 35 is connected to the storage space 32. The insertion hole 35 is generally cylindrical with a diameter smaller than the diameter of the storage space 32, and is formed so that its central axis is aligned with the width direction.

In addition, a generally rectangular restriction hole 36 that is elongated in the width direction is formed in the back surface portion 34, and the restriction hole 36 is connected to the storage space 32.

The storage space 32 contains a spring bar 40. The spring bar 40 includes a syringe 41, a first pin 42, a second pin 43, a spring 44, and a lever 45.

The syringe 41 is formed in a generally cylindrical shape with a diameter smaller than the diameter of the storage space 32 and a widthwise length shorter than the storage space 32. The syringe 41 contains a portion of the first pin 42 and the second pin 43, as well as the entire spring 44. The syringe 41 is formed such that both ends of a cylindrical metal member are narrowed inward. Therefore, both ends 41a of the syringe 41 have a smaller inner diameter than the central portion of the syringe 41.

A roughly rectangular through hole 41c is formed along the axial direction on the second pin 43 side of the center of the syringe 41. The through hole 41c is formed in a position that faces the restriction hole 36 when the spring pin 40 is accommodated in the accommodation space 32. The through hole 41c is formed in roughly the same shape as the restriction hole 36.

The first pin 42 is integrally formed with a cylindrical large diameter portion 42a having a relatively large diameter and a cylindrical pin tip portion 42b having a relatively small diameter, which are aligned coaxially.
The diameter of the large diameter portion 42 a is slightly smaller than the inner diameter of the syringe 41 and is larger than the inner diameter of the end portion 41 a of the syringe 41 .
The diameter of the pin tip portion 42b is slightly smaller than the inner diameter of the end portion 41a of the syringe 41 and is also slightly smaller than the inner diameter of the insertion hole 35 of the band connector 31. The tip of the pin tip portion 42b is formed in a semispherical shape.
The first pin 42 is arranged such that the large diameter portion 42a is housed within the syringe 41 and the pin tip portion 42b protrudes outside the syringe 41 from one end portion 41a.

The second pin 43 is integrally formed so that a large diameter portion 43a having a relatively large diameter, a small diameter portion 43b having a relatively small diameter, a cylindrical flange portion 43c having a relatively large diameter, and a cylindrical pin tip portion 43d having a relatively small diameter are aligned on the same axis.
The diameter of the large diameter portion 43 a is slightly smaller than the inner diameter of the syringe 41 and is larger than the inner diameter of the end portion 41 a of the syringe 41 .
The diameter of the small diameter portion 43 b is slightly smaller than the inner diameter of the end portion 41 a of the syringe 41 .
The diameter of the flange portion 43 c is larger than the inner diameter of the insertion hole 35 of the band connector 31 and also larger than the inner diameter of the end portion 41 a of the syringe 41 .
The pin tip portion 43d has a diameter slightly smaller than the inner diameter of the insertion hole 35 of the band connector 31. In addition, the tip of the pin tip portion 43d is formed in a semispherical shape.
The second pin 43 is disposed so that the large diameter portion 43a is housed in the syringe 41 and the small diameter portion 43b protrudes from the other end 41a to the outside of the syringe 41. Therefore, the flange portion 43c and the pin tip portion 43d are disposed outside the syringe 41.

In addition, a screw groove 43e is formed in the large diameter portion 43a of the second pin 43 along the radial direction perpendicular to the axial direction at a position facing the restriction hole 36 and the through hole 41c in the axial direction.

A spring 44 is disposed in the syringe 41 between the large diameter portion 42a of the first pin 42 and the large diameter portion 43a of the second pin 43 so as to abut against both. The spring 44 is housed in the syringe 41 at its natural length or in a state compressed from its natural length, thereby biasing the first pin 42 toward one end 41a (outside in the width direction) and biasing the second pin 43 toward the other end 41a (outside in the width direction).

As a result, the flange portion 43c of the second pin 43 of the spring bar 40 abuts against the other end 33 of the band connector 31 within the storage space 32, and the end 41a of the syringe 41 on the first pin 42 side abuts against one end 33 of the band connector 31.

The lever 45 is integrally formed with the screw portion 45a, which has a screw groove, and the head portion 45b, which has a larger diameter than the screw portion 45a, so that they are aligned on the same axis. The screw portion 45a is inserted into the insertion hole 35 and the through hole 41c, and then screwed into the screw groove 43e. When the screw portion 45a is screwed into the screw groove 43e, the head portion 45b is positioned on the back side of the back portion 34 of the band connector 31. The tip of the head portion 45b is formed into a spherical shape (bowl shape) with a convex center.

When the spring bar 40 is accommodated in the accommodation space 32, the lever 45 is removed from the second pin 43. The spring bar 40 with the lever 45 removed is accommodated in the accommodation space 32 with the first pin 42 and the second pin 43 pushed toward the center and the overall length shorter than the accommodation space 32. When the force applied to the first pin 42 and the second pin 43 is released, the pin tip 42b of the first pin 42 is inserted into one of the insertion holes 35, and the pin tip 43d of the second pin 43 is inserted into the other insertion hole 35. This results in the spring bar 40 being attached to the band connector 31. After that, the screw portion 45a of the lever 45 is screwed into the screw groove 43e of the second pin 43.

[1-3. Configuration of the upper end of the main module body]
Fig. 7 is a diagram showing the configuration of the upper end portion of the main module body 11. Fig. 8 is a cross-sectional view taken along line VII-VII in Fig. 7. Fig. 7 is a diagram showing the main module body 11 as viewed from the back side.

As shown in Figures 7 and 8, an engagement portion 50 is provided at the upper end of the main module body 11. The engagement portion 50 defines an engagement space 51 surrounded by a cover portion 52 and a pair of protrusions 53. The engagement space 51 is defined by cutting out the upper portion of the main module body 11 from the rear surface side.

The cover portion 52 is formed only on the front surface side at the upper end of the main module body portion 11. The protrusions 53 are formed on both ends of the main module body portion 11 in the width direction. The pair of protrusions 53 are slightly spaced apart from each other by more than the width direction length of the band connector 31.

Each of the protrusions 53 has a cylindrical locking hole 54 formed therethrough in the width direction. The diameter of the locking hole 54 is slightly larger than the diameter of the pin tip 42b of the first pin 42 and the pin tip 43d of the second pin 43.

The protrusion 53 also has a call-in portion 55 formed on the back side at a position opposite the locking hole 54 in the front-back direction. The call-in portion 55 is inclined so that its height from the cover portion 52 decreases toward the engagement space 51.

Further, a bowl-shaped cutout portion 56 is formed on the rear surface of the main module body portion 11 facing the engagement space 51 so that the central portion is recessed.

[1-4. Configuration of the inner link 13]
Fig. 9 is a diagram showing the configuration of the inner link 13. Fig. 9 is a diagram showing the inner link 13 as viewed from the back side.

As shown in FIG. 9, the inner link 13 is integrally formed with an inner link body 61 formed in a frame shape and an engagement portion 62 formed so as to be continuous with the lower end of the inner link body 61.

The inner link body 61 has a space formed therein capable of housing the sub-housing 22 of the main module body 11. In addition, an engagement hole 63 is formed below the center in the vertical direction in the frame portion 61a that is provided across the inner link body 61 in the vertical direction. The engagement hole 63 is formed so as to penetrate in the width direction. As described above, the claw portion of the buckle unit 14 can engage with the engagement hole 63.

A through hole 64 is formed at the upper end of the inner link body 61, penetrating in the width direction. The inner link 13 is rotatably connected to the outer link 12 by inserting a pin or the like into the through hole 64.

The engagement portion 62 is formed integrally with an engagement portion main body 71 that extends in the width direction, and a pair of protrusions 72 that protrude downward from both ends of the engagement portion main body 71. In addition, an engagement space 73 is formed in the engagement portion 62, surrounded by the engagement portion main body 71 and the pair of protrusions 72.

The pair of protrusions 72 are spaced apart slightly apart from each other by more than the width of the band connector 31. Each protrusion 72 has a cylindrical locking hole 74 formed therein that penetrates in the width direction. The diameter of the locking hole 74 is slightly larger than the diameter of the pin tip 42b of the first pin 42 and the pin tip 43d of the second pin 43.

In addition, the protrusion 72 has a call-in portion 75 formed on the back side at a position facing the locking hole 74 in the front-back direction. The call-in portion 75 is inclined so that the distance from the locking hole 74 becomes shorter toward the engagement space 73.

Further, a bowl-shaped cutout portion 76 is formed on the back surface of the engaging portion main body 71 facing the engaging space 73 so that the central portion is recessed. It is noted that the cutout portion 76 does not necessarily have to be provided.

[1-5. Attaching and detaching the sub-assembly band connector to the main module body]
10 is a diagram for explaining the attachment of the sub-assembly band connector 5 to the main module body 11. As described above, various types of band units 3 are provided. In the wearable device 1, the band units 3 can be replaced according to the user's mood, time, place, and the like.

When attaching (engaging) the band portion 3 to the main module portion 4, the sub-assembly band connector 5 of the upper band 3a is engaged with the engagement portion 50 of the main module body portion 11, and the sub-assembly band connector 5 of the lower band 3b is engaged with the engagement portion 62 of the inner link 13.

The following describes how to attach and detach the sub-assembly band connector 5 of the upper band 3a to the engagement portion 50 of the main module body 11, but the same applies when attaching and detaching the sub-assembly band connector 5 of the lower band 3b to the engagement portion 62 of the inner link 13.

When attaching the sub-assembly band connector 5 of the upper band 3a to the engagement portion 50 of the main module body 11, as shown in FIG. 10A, the sub-assembly band connector 5 of the upper band 3a is moved so that it faces the engagement space 51 of the main module body 11.

More specifically, the band connector 31 is positioned so as to face the engagement space 51. At this time, the pin tip 42b of the first pin 42 faces the intake portion 55 formed on one of the protrusions 53, and the pin tip 43d of the second pin 43 faces the intake portion 55 formed on the other protrusion 53.

Then, as shown in FIG. 10B, when the sub-assembly band connector 5 is pushed toward the main module body 11 by the user's finger Fg, the pin tip 42b of the first pin 42 comes into contact with the call-in portion 55 formed on one of the protrusions 53, and the pin tip 43d of the second pin 43 comes into contact with the call-in portion 55 formed on the other protrusion 53.

When the sub-assembly band connector 5 is further pushed toward the main module body 11 by the user's finger Fg, the reaction force of the pushing force by the user's finger Fg causes one of the intake parts 55 to push the first pin 42 toward the center in the width direction against the biasing force of the spring 44, and the other intake part 55 to push the second pin 43 toward the center in the width direction against the biasing force of the spring 44. Then, the force with which the first pin 42 and the second pin 43 are pushed in causes the spring 44 housed in the syringe 41 to contract. Note that here, the spring 44 can be contracted by pushing at least one of the first pin 42 and the second pin 43 toward the center.

In this way, the sub-assembly band connector 5 is pushed into the main module body 11 while the first pin 42 and the second pin 43 move toward the center in the width direction. Then, as shown in FIG. 10C, when the sub-assembly band connector 5 is pushed into a position where the first pin 42 and the second pin 43 face a pair of locking holes 54 formed in the protrusion 53, the pin tip 42b of the first pin 42 is inserted into one of the locking holes 54 by the biasing force of the spring 44, and the pin tip 43d of the second pin 43 is inserted into the other locking hole 54 by the biasing force of the spring 44.

In this way, the band connector 31 is accommodated in the engagement space 51, and the upper band 3a is engaged (connected) to the main module body portion 11.

FIG. 11 is a diagram illustrating the removal of the sub-assembly band connector 5 from the main module body 11. When removing the sub-assembly band connector 5 of the upper band 3a from the main module body 11, the user first moves the lever 45 toward the center in the width direction with the user's finger Fg. This causes the second pin 43 to move toward the center in the width direction against the biasing force of the spring 44. This causes the pin tip 43d of the second pin 43 to come out of the other locking hole 54.

The widthwise movement distance of the lever 45 is limited by a restriction hole 36 formed in the back surface portion 34. The restriction hole 36 is formed with a widthwise length such that when the lever 45 is moved to the most central position, the tip of the pin tip portion 43d comes out of the locking hole 54, but does not come out of the insertion hole 35.

Then, the second pin 43 side of the sub-assembly band connector 5 is moved in a direction away from the main module body 11. At this time, as shown in FIG. 11, the sub-assembly band connector 5 rotates clockwise in the figure with the contact point of the first pin 42 with one of the locking holes 54 as a fulcrum.

Then, after the pin tip 43d of the second pin 43 is moved to the side opposite the main module main body 11 from the protrusion 53, the first pin 42 is removed from the engagement hole 54, thereby removing the sub-assembly band connector 5 from the main module main body 11.

[1-6. Detailed shapes of the sub-assembly band connector and main module body]
12 is a diagram illustrating the lengths of the sub-assembly band connector 5 and the main module body 11. As described above, when the sub-assembly band connector 5 is attached to the main module body 11, the pin tip 42b of the first pin 42 is inserted into one of the locking holes 54, and the pin tip 43d of the second pin 43 is inserted into the other locking hole 54, so that the sub-assembly band connector 5 engages with the main module body 11.

If the tolerance of the sub-assembly band connector 5 is large, the sub-assembly band connector 5 may easily come off the main module body 11, or the sub-assembly band connector 5 may not be able to engage with the main module body 11.

For example, if the spring bar 40 becomes shorter, the length over which the pin tip 42b of the first pin 42 and the pin tip 43d of the second pin 43 engage with the locking hole 54 becomes shorter, making it easier for the sub-assembly band connector 5 to come off from the main module body 11.

Therefore, in the wearable device 1, the tolerance of the sub-assembly band connector 5 is made small. Here, as shown in FIG. 12, the length in the width direction of the engagement space 51, i.e., the distance between the pair of protrusions 53, is defined as length L1. Since the main module body 11 can be formed, for example, by machining a metal material, the processing error of length L1 is small.

In addition, in the band connector 31, the length in the width direction from the outermost width direction of one end 33 to the inner surface of the other end 33 that contacts the storage space 32 is defined as length L2. Since the band connector 31 can be formed, for example, by machining a metal material, the processing error of length L2 is small.

On the other hand, since the end 41a of the syringe 41 is formed by, for example, drawing after the first pin 42, the second pin 43, and the spring 44 are housed inside the syringe 41, the processing error in the width direction of the syringe 41 becomes large.

The second pin 43 is formed with a flange portion 43c, and the second pin 43 abuts against the inner surface of the other end 33. In the sub-assembly band connector 5, the pin tip 43d of the second pin 43 protrudes from the other insertion hole 35 of the band connector 31. At this time, since the second pin 43 can be formed, for example, by machining a metal material, the machining error of the length L3, which is the length of the pin tip 43d, is small.

By doing this, the tolerance of the sub-assembly band connector 5 can be set by the sum of the length L2 of the band connector 31 and the length L3 of the pin tip portion 43d.

The length L2 of the band connector 31 and the length L3 of the pin tip 43d can both be machined to a high degree of precision. This makes it possible to reduce the tolerance of the sub-assembly band connector 5.

This makes it possible to reduce the likelihood that the sub-assembly band connector 5 will become detached from the main module body 11 or that the sub-assembly band connector 5 will not be able to engage with the main module body 11 in the wearable device 1.

FIG. 13 is a diagram illustrating the configuration of the end 33 of the band connector 31. As described above, when removing the sub-assembly band connector 5 from the main module body 11, the sub-assembly band connector 5 rotates around the contact point of the first pin 42 with one of the locking holes 54 as a fulcrum. At this time, if the outer surface 33a of the end 33 of the band connector 31 is formed perpendicular to the width direction, the outer surface 33a of the end 33 is likely to get caught on the inner surface of the protrusion 53. This may make it difficult to remove the sub-assembly band connector 5 from the main module body 11, or may damage the outer surface 33a of the end 33 and the inner surface of the protrusion 53.

As shown in FIG. 13, the outer surface 33a of the end 33 of the band connector 31, which is closer to the main module body 11 (the surface side) than the insertion hole 35, is curved into a spherical shape (bowl shape) so that the width direction length becomes shorter toward the main module body 11.

Furthermore, the outer surface 33a of the end 33 of the band connector 31, on the side opposite the main module body 11 from the insertion hole 35 (back side), is formed to be shorter in the width direction by a length L11 than the main module body 11 side from the insertion hole 35. Furthermore, the outer surface 33a of the end 33 of the band connector 31, on the side opposite the main module body 11 from the insertion hole 35 (back side), is inclined toward the center as it approaches the back side.

This makes it possible to reduce the outer surface 33a coming into contact with the inner surface of the protrusion 53 when the sub-assembly band connector 5 rotates around the contact point with the locking hole 54 in the first pin 42 as a fulcrum.

14 is a diagram illustrating the notch 56. As described above, the notch 56 is formed at a position that faces the head 45b of the lever 45 in the width direction when the sub-assembly band connector 5 is engaged with the main module body 11.
When the sub-assembly band connector 5 is engaged with the main module body 11, the sub-assembly band connector 5 can rotate around the central axis of the spring bar 40 relative to the main module body 11, as shown by the arrow in Figure 14.

14, the cutout 56 formed in the main module body 11 can reduce the contact of the head 45b with the main module body 11. It can also reduce the contact of the head 45b with the outer link 12 and the inner link 13.

2. Modified Examples
The wearable device 1 as an embodiment is not limited to the specific examples described above, and may have various modified configurations.

For example, in the above embodiment, the wearable device 1 is provided with a clock unit 2, but it does not have to be provided with a clock unit 2. In this case, the band unit 3 may be formed integrally with the upper band 3a and the lower band 3b.

The engagement structure for engaging the sub-assembly band connector 5 with the main module body 11 may also be used when engaging the band 3 with the watch 2. In other words, the body may be the watch 2, not just the main module body 11, and the engagement structure described above may be used when engaging the band 3 with the body.

[2-1. Modification 1]
15 is a diagram for explaining the configuration of the sub-assembly band connector 105 and the main module body 111 of the modified example 1. FIGS. 16 and 17 are diagrams showing the sub-assembly band connector 105 engaged with the main module body 111.

The wearable device 101 of the first modified example includes a main module body 111 and a sub-assembly band connector 105. The main module body 111 includes an engagement space 51, a cover portion 52, a protrusion 53, a locking hole 54, and a call-in portion 55, similar to the main module body 11 of the embodiment. The main module body 111 also includes pins 112 that are inserted into a pair of locking holes 54 and extend across the width of the engagement space 51.

The sub-assembly band connector 105 comprises a sub-assembly band connector main body 105a, an engagement portion 105b, a slide portion 105c, a cover portion 105d, a claw portion 105e, and a spring 105f. The engagement portion 105b is curved toward the back side so that a roughly cylindrical space that is open on the back side is formed.

The slide portion 105c is arranged on the back side of the sub-assembly band connector main body 105a so as to be movable in the circumferential direction. A pair of claw portions 105e are arranged at the tip of the slide portion 105c. The claw portions 105e are formed so as to protrude toward the tip of the engagement portion 105b.

The cover portion 105d is fixed to the back side of the sub-assembly band connector main body 105a so as to cover the spring 105f arranged in the internal space of the sub-assembly band connector main body 105a. The spring 105f biases the slide portion 105c toward the tip side of the engagement portion 105b.

When the sub-assembly band connector 105 is attached to the main module body 111, the user moves the slide portion 105c rearward (the opposite side to the tip of the engagement portion 105b). This causes the claw portion 105e to also move rearward, opening the back side of the space formed by the engagement portion 105b. Then, as shown in FIG. 17, after the engagement portion 105b is hooked onto the pin 112 of the main module body 111, the slide portion 105c is returned to its original position, and as shown in FIG. 16 and FIG. 17, the engagement portion 105b and the claw portion 105e engage to grip the pin 112.

[2-2. Modification 2]
18 to 21 are diagrams for explaining the configuration of a sub-assembly band connector 205 and a main module body 211 of the second modified example.

As shown in Figures 18 to 21, the sub-assembly band connector 205 has a protrusion 205a that protrudes from the tip side (the main module body 211 side). A step 205b is formed on the back side of the protrusion 205a. Specifically, the protrusion 205a has a step 205b whose length in the front-back direction increases toward the tip. In addition, the front side of the protrusion 205a is formed flush.

The main module body 211 has an engagement space 251 that is open at the tip side (the sub-assembly band connector 205 side). The engagement space 251 contains a pin 252, a locking portion 253, and a spring 254.

The pin 252 is arranged across the width in the engagement space 251. The locking portion 253 is rotatably supported by the pin 252 in the engagement space 251. The shape of the front side of the locking portion 253 is formed to be substantially the same as the shape of the back side of the protrusion 205a. Therefore, a step 253b is formed on the front side of the locking portion 253. In addition, a protrusion 253a is formed on the side of the spring 254 of the locking portion 253. Furthermore, a lever 253c is formed on the back side of the locking portion 253, protruding toward the back side of the main module body 211.

The spring 254 is housed between the protrusion 253a of the locking portion 253 and the flat surface 251a on the back side of the engagement space 251.

When attaching the sub-assembly band connector 205 to the main module body 211, the protrusion 205a of the sub-assembly band connector 205 is inserted into the engagement space 251 of the main module body 211, as shown in Figures 18 to 21 in order. When the protrusion 205a comes into contact with the locking portion 253, the locking portion 253 is pushed downward. When the protrusion 205a is further inserted, the step 205b of the protrusion 205a catches the step 253b of the locking portion 253, and the sub-assembly band connector 205 engages with the main module body 211.

When removing the sub-assembly band connector 205 from the main module body 211, when the user pushes the lever 253c toward the tip, the locking portion 253 rotates as shown in FIG. 20, making it possible to pull out the protruding portion 205a.

[2-3. Modification 3]
22 to 25 are diagrams for explaining the configuration of a sub-assembly band connector 305 and a main module body 311 of the third modified example.

As shown in Figures 22 to 25, the main module body 311 has an engagement space 351 and a locking hole 354 formed therein. In addition, a restricting portion 353 that opens to the back side is formed in a position within the engagement space 351 facing the locking hole 354. The restricting portion 353 is open only on the back side so as to cover the locking hole 354.

The sub-assembly band connector 305 comprises a sub-assembly band connector main body 341, a pair of pin portions 342, and a spring 343. The sub-assembly band connector main body 341 houses the pair of pin portions 342 and the spring 343. The pair of pin portions 342 are each biased outward in the width direction by the spring 343.

The pin portion 342 is formed with a button portion 344a and a pin 344b that protrude outward in the width direction beyond the sub-assembly band connector main body portion 341.

When attaching the sub-assembly band connector 305 to the main module body 311, as shown in FIG. 25, the user presses the button portion 344a toward the center in the width direction, causing the pair of pin portions 342 to move toward the center in the width direction against the biasing force of the spring 343. At this time, the distance between the tips of the pins 344b of the pair of pin portions 342 is shorter than the distance between the pair of locking holes 354 and longer than the distance between the pair of restricting portions 353.

As a result, when button portion 344a is pressed in, pin 344b is moved through the opening of restriction portion 353 to a position facing locking hole 354. When button portion 344a is then released by the user, the biasing force of spring 343 moves pin portions 342 away from each other, and pin 344b is inserted into locking hole 354, causing sub-assembly band connector 305 to engage with main module body portion 311.

[2-4. Modified examples of sub-assembly band connector]
26 to 28 are diagrams showing modified examples of the sub-assembly band connector. The band connector of the sub-assembly band connector has a common end portion 33 and back portion 34 that form the housing space 32, and the other parts can be formed into various shapes according to the shape and size of the band portion 3.
For example, the band connector 431 of the sub-assembly band connector 405 shown in Figure 26 has the end portion 33 and back portion 34 which form the storage space 32 in common with the band connector 31 of the embodiment, and the remaining portion has an approximately rectangular shape which is larger than the end portion 33 and back portion 34.
In addition, the band connector 531 of the sub-assembly band connector 505 shown in Figure 27 has the end portion 33 and back portion 34 which form the storage space 32 in common with the band connector 31 of the embodiment, and the remaining portion is C-shaped with an opening on the side opposite the end portion 33 and back portion 34.
In addition, the band connector 631 of the sub-assembly band connector 605 shown in Figure 28 has the end portion 33 and back portion 34 which form the storage space 32 in common with the band connector 31 of the embodiment, and the other portions are shaped so that they are open in the center and have a protrusion that protrudes toward the front surface side.

3. Summary of the embodiment
As described above, the wearable device 1 includes a main body (main module main body 11) and a band 3 that is detachable from the main body. The band 3 includes a band connector 31 that has a storage space 32 and has insertion holes 35 formed at both ends 33 in the width direction, and a spring bar 40 that is disposed in the storage space 32. The spring rod 40 comprises a syringe 41 formed in a cylindrical shape with narrowed ends, a first pin 42 having a tip portion (pin tip portion 42b) partially contained within the syringe 41 and arranged so that its tip protrudes from one of the insertion holes 35, a flange portion 43c partially contained within the syringe 41 and arranged within the accommodation space 32, and a second pin 43 having a tip portion (pin tip portion 43d) formed continuously from the flange portion 43c and whose tip protrudes from the other insertion hole 35, and a spring 44 contained within the syringe 41 and biases the first pin 42 and the second pin 43 outward in the width direction.

As a result, the wearable device 1 is able to reduce the error in the length of the second pin 43 protruding from the other insertion hole 35 in the band connector 31 by the flange portion 43c of the second pin 43 abutting against the inner wall surface (the other end 33) of the storage space 32 in the band connector 31.
That is, in the wearable device 1, it is possible to reduce the tolerance of the band portion 3. Therefore, in the wearable device 1, it is possible to reduce the occurrence of the band portion 3 not being attached to the main module body portion 11 or the band portion 3 becoming detached from the main module body portion 11.
Thus, the wearable device 1 can make it easier to put on and take off the band portion 3 while reducing the tolerance of the band portion 3.

Within the storage space 32, the flange portion 43c of the second pin 43 abuts against the band connector 31 (the other end 33), and the end 41a of the syringe 41 on the first pin 42 side abuts against the band connector 31 (one end 33).
Furthermore, since the length L1 of the band connector 31 and the length L2 of the pin tip 43d of the second pin 43 are processed within the machining error, the tolerance of the band portion 3 in the wearable device 1 can be reduced.

The second pin 43 has a small diameter portion 43b that is formed contiguous with the flange portion 43c and has a smaller diameter than the flange portion 43c.
This allows the second pin 43 to move axially (widthwise) within the syringe 41 .

The spring bar 40 has a lever 45 that is inserted into a through hole 41 c formed in the side surface of the syringe 41 and is fixed to the second pin 43 .
This allows the user to easily detach the band portion 3 from the main module body portion 11 by operating the lever 45 .

The lever 45 has a head 45b exposed to the outside of the syringe 41, and the tip surface of the head 45b is formed into a spherical shape with a convex center.
This allows the user to operate the head 45 b , which is formed in a spherical shape with a convex center, and therefore allows the band portion 3 to be easily removed from the main module body portion 11 .
In addition, when the head 45 b approaches the outer link 12 and the inner link 13 , the head 45 b is less likely to come into contact with the outer link 12 and the inner link 13 .

The band connector 31 has a restriction hole 36 formed at a position facing the lever 45 , and the lever 45 is fixed to the second pin 43 in a state where it is inserted into the restriction hole 36 .
This makes it possible for the restriction hole 36 to restrict the movement of the lever 45 when the lever 45 is operated by a user.

The restriction hole 36 is formed along the movement direction of the second pin 43 and restricts the movement of the second pin 43 .
As a result, when the lever 45 is operated by the user, the movement of the lever 45 is restricted by the restriction hole 36, thereby preventing the second pin 43 from coming out of the insertion hole 35 of the band connector 31.

The band connector 31 has an outer surface 33a of an end 33 in the width direction that is formed into a spherical shape.
This reduces interference between the outer surface 33a of the end 33 and the inner surface of the protrusion 53 facing the engagement space 51 of the main module body 11 when the band portion 3 is removed from the main module body 11.

The outer surface 33a of the widthwise end 33 of the band connector 31 is formed shorter on the side opposite the main body portion (main module main body portion 11) from the insertion hole 35 than on the main body side from the insertion hole 35 toward the center in the width direction.
This reduces interference between the outer surface 33a of the end 33 and the inner surface of the protrusion 53 facing the engagement space 51 of the main module body 11 when the band portion 3 is removed from the main module body 11.

The main body (main module main body 11 ) has a guide portion 55 inclined toward the accommodation space 32 at a position facing the insertion hole 35 in the front-rear direction.
This allows the user to easily engage (attach) the band portion 3 to the main module body portion 11 simply by pushing the band portion 3 into the main module body portion 11 side.

Furthermore, the engagement structure and hand device of the embodiment can achieve the same effects as the wearable device 1.

It should be noted that the effects described in this specification are merely examples and are not limiting, and other effects may also be obtained.

<4. This Technology>
The present technology can also be configured as follows.
(1)
A main body portion,
A band portion that is detachable from the main body portion;
Equipped with
The band portion is
a band connector having an accommodation space and an insertion hole formed at each of both ends in a width direction;
A spring bar disposed in the accommodation space;
Equipped with
The spring bar is
A syringe having a cylindrical shape and narrowed ends;
a first pin having a tip portion that is partially accommodated in the syringe and is disposed so as to protrude from one of the insertion holes;
a flange portion that is partially accommodated in the syringe and disposed in the accommodation space, and a second pin having a tip portion that is formed continuously with the flange portion and disposed so as to protrude from the other insertion hole;
a spring that is housed in the syringe and biases the first pin and the second pin outward in a width direction;
A wearable device comprising:
(2)
The spring bar is
A wearable device as described in (1), wherein within the storage space, the flange portion of the second pin abuts against the band connector and the end of the syringe on the first pin side abuts against the band connector.
(3)
The wearable device of (1) or (2), wherein the second pin is formed continuously with the flange portion and has a small diameter portion having a smaller diameter than the flange portion.
(4)
The wearable device according to any one of (1) to (3), wherein the spring bar is inserted into a through hole formed in a side of the syringe and has a lever fixed to the second pin.
(5)
The lever has a head portion exposed outside the syringe,
The wearable device according to (4), wherein the tip surface of the head is formed into a spherical shape with a convex center.
(6)
The band connector has a restriction hole formed at a position facing the lever,
The wearable device according to (4) or (5), wherein the lever is fixed to the second pin while inserted into the restriction hole.
(7)
The wearable device according to (6), wherein the restriction hole is formed along a moving direction of the second pin and restricts the movement of the second pin.
(8)
The band connector includes:
A wearable device described in any one of (1) to (7), wherein the outer surface of the end in the width direction is formed into a spherical shape.
(9)
A wearable device described in any of (1) to (8), wherein the outer surface of the widthwise end of the band connector is formed shorter on the side opposite the main body portion from the insertion hole toward the center in the widthwise direction than on the side opposite the main body portion from the insertion hole.
(10)
The main body portion is
A wearable device as described in any one of (1) to (9), comprising an intake portion inclined toward the storage space at a position opposite the insertion hole in the front-back direction.
(11)
An engagement portion,
a connector portion detachable from the engagement portion;
Equipped with
The connector portion includes:
a band connector having an accommodation space and insertion holes at both ends;
A spring bar disposed in the accommodation space;
Equipped with
The spring bar is
A syringe having a cylindrical shape and narrowed ends;
a first pin having a tip portion that is partially accommodated in the syringe and is disposed so as to protrude from one of the insertion holes;
a flange portion that is partially accommodated in the syringe and disposed in the accommodation space, and a second pin having a tip portion that is formed continuously with the flange portion and disposed so as to protrude from the other insertion hole;
a spring that is housed in the syringe and biases the first pin and the second pin outward in a width direction;
An engagement structure comprising:
(12)
a band connector having an accommodation space and insertion holes at both ends in a width direction;
A spring bar disposed in the accommodation space;
Equipped with
The spring bar is
A syringe having a cylindrical shape and narrowed ends;
a first pin having a tip portion that is partially accommodated in the syringe and is disposed so as to protrude from one of the insertion holes;
a flange portion that is partially accommodated in the syringe and disposed in the accommodation space, and a second pin having a tip portion that is formed continuously with the flange portion and disposed so as to protrude from the other insertion hole;
a spring that is housed in the syringe and biases the first pin and the second pin outward in a width direction;
A band device comprising:

1 Wearable device 3 Band unit 11 Main module main body unit (main body unit)
31 Band connector 40 Spring bar 41 Syringe 42 First pin 43 Second pin 44 Spring

Claims (12)

A main body portion,
A band portion that is detachable from the main body portion;
Equipped with
The band portion is
a band connector having an accommodation space and an insertion hole formed at each of both ends in a width direction;
A spring bar disposed in the accommodation space;
Equipped with
The spring bar is
A syringe having a cylindrical shape and narrowed ends;
a first pin having a tip portion that is partially accommodated in the syringe and is disposed so as to protrude from one of the insertion holes;
a flange portion that is partially accommodated in the syringe and disposed in the accommodation space, and a second pin having a tip portion that is formed continuously with the flange portion and disposed so as to protrude from the other insertion hole;
a spring that is housed in the syringe and biases the first pin and the second pin outward in a width direction;
A wearable device comprising: The spring bar is
The wearable device of claim 1 , wherein within the storage space, the flange portion of the second pin abuts against the band connector, and the end of the syringe on the first pin side abuts against the band connector. The wearable device according to claim 1 , wherein the second pin has a small diameter portion that is formed continuously with the flange portion and has a smaller diameter than the flange portion. The wearable device according to claim 1 , wherein the spring bar comprises a lever that is inserted into a through hole formed in a side surface of the syringe and fixed to the second pin. The lever has a head portion exposed outside the syringe,
The wearable device according to claim 4 , wherein the tip surface of the head is formed into a spherical shape with a convex center. The band connector has a restriction hole formed at a position facing the lever,
The wearable device according to claim 4 , wherein the lever is fixed to the second pin while being inserted into the restriction hole. The wearable device according to claim 6 , wherein the restriction hole is formed along a moving direction of the second pin and restricts the movement of the second pin. The band connector includes:
The wearable device according to claim 1 , wherein the outer surface of the end in the width direction is formed into a spherical shape. The wearable device of claim 1, wherein the outer surface of the widthwise end of the band connector is formed shorter on the side opposite the main body portion from the insertion hole toward the center in the widthwise direction than on the main body portion side from the insertion hole. The main body portion is
The wearable device according to claim 1 , further comprising a guide portion inclined toward the storage space, at a position opposite the insertion hole in the front-back direction. An engagement portion,
a connector portion detachable from the engagement portion;
Equipped with
The connector portion includes:
a band connector having an accommodation space and insertion holes at both ends;
A spring bar disposed in the accommodation space;
Equipped with
The spring bar is
A syringe having a cylindrical shape and narrowed ends;
a first pin having a tip portion that is partially accommodated in the syringe and is disposed so as to protrude from one of the insertion holes;
a flange portion that is partially accommodated in the syringe and disposed in the accommodation space, and a second pin having a tip portion that is formed continuously with the flange portion and disposed so as to protrude from the other insertion hole;
a spring that is housed in the syringe and biases the first pin and the second pin outward in a width direction;
An engagement structure comprising: a band connector having an accommodation space and insertion holes at both ends in a width direction;
A spring bar disposed in the accommodation space;
Equipped with
The spring bar is
A syringe having a cylindrical shape and narrowed ends;
a first pin having a tip portion that is partially accommodated in the syringe and is disposed so as to protrude from one of the insertion holes;
a flange portion that is partially accommodated in the syringe and disposed in the accommodation space, and a second pin having a tip portion that is formed continuously with the flange portion and disposed so as to protrude from the other insertion hole;
a spring that is housed in the syringe and biases the first pin and the second pin outward in a width direction;
A band device comprising:

Images