JP2019060844A - Watch with magnetometric sensor - Google Patents

Abstract

To provide a watch with magnetometric sensor capable of reducing influences of magnetic field on a magnetometric sensor.SOLUTION: A watch with magnetometric sensor 1 comprises: a case 2 housing a magnetometric sensor 25; a watch band 3; a spring bar 50 for attaching the band 3 to a can 21 of the case 2. The spring bar 50 is constituted of a pipe, a pin and spring. The pipe and pin are formed of a non-magnetic material, and the spring is formed of a non-magnetic material having elasticity.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a watch with a magnetic sensor provided with a magnetic sensor.

  A watch with a magnetic sensor is known that incorporates a magnetic sensor that measures the direction. Magnetic sensors can not measure the correct orientation when they are affected by magnetism. For this reason, for example, there is a watch with a magnetic sensor provided with correction means for removing the influence of the magnetic field of the step motor inside the watch (Patent Document 1).

JP 10-170664 A

In a watch with a magnetic sensor, there is a watch band as a component affecting the magnetic sensor, in addition to the components in the watch case. In particular, in the case where the watch band or a part connecting the watch band to the watch case is made of a material that is easily magnetized, the magnetic sensor does not operate normally due to the influence of the magnetized part.
Therefore, it is conceivable to prevent the magnetization of the band and prevent the magnetic sensor from being affected by using a watch band made of a nonmagnetic material such as titanium.

  By the way, when attaching the end piece of a watch band between two cans of a watch case, it is usually attached using the spring bar of SUS material. In this case, there is a possibility that the spring rod may be magnetized, and if it is magnetized, the magnetic sensor is affected, and there is a problem that it is not possible to measure and indicate the correct orientation.

  An object of the present invention is to provide a watch with a magnetic sensor which can reduce the influence of a magnetic field on the magnetic sensor.

  A watch with a magnetic sensor according to the present invention comprises a case incorporating a magnetic sensor, a watch band, and a spring bar for attaching the band to the can of the case, the spring bar comprising a pipe, a pin, a spring and The pipe and the pin are made of nonmagnetic material, and the spring is made of elastic nonmagnetic material.

  According to the present invention, the spring bar connecting the band to the can of the watch case is made of a pipe and a pin made of a nonmagnetic material such as titanium, which is hard to magnetize, and a hard magnetizing nonmagnetic material having elasticity such as cobalt-nickel alloy. The spring made of a magnetic material can prevent the spring bar from being magnetized to affect the magnetic sensor. Therefore, the magnetic sensor operates properly, and the magnetic sensor can detect and indicate the correct orientation.

  In the timepiece with a magnetic sensor of the present invention, the pipe and the pin are preferably made of a titanium material.

  According to the present invention, since the pipe and the pin are made of a titanium material, the pipe and the pin can be prevented from being magnetized, and the magnetic sensor can be prevented from being affected by the magnetic field. Further, the weight of the spring bar can be reduced as compared with the case of using stainless steel such as SUS316.

  In the timepiece with a magnetic sensor of the present invention, the spring is preferably made of a cobalt-nickel alloy.

  According to the present invention, since the spring is made of cobalt-nickel alloy, it is possible to suppress the magnetization of the spring, and to prevent the magnetic sensor from being influenced by the magnetic field, and the spring property necessary for the spring Can also be secured.

  In the timepiece with a magnetic sensor of the present invention, the band may have an end piece made of nonmagnetic material, and the end piece may be attached to a can of the case with the spring bar.

  According to the present invention, since the end piece made of nonmagnetic material such as titanium material is attached to the can of the case with a spring bar, bending the spring bar prevents the end piece from rotating relative to the case Can be attached to the case to prevent the endpiece from rattling the case.

  In the timepiece with a magnetic sensor of the present invention, the spring bar may be covered with a cover member made of a nonmagnetic material, and the band may be a nonmetallic pull-through band.

  According to the present invention, a non-metal band such as a leather band, silicone band, nylon band, urethane band, etc. By pulling between the rod and the case, a draw-through band can be configured. At this time, since the spring bar is covered with a cover member of nonmagnetic material such as titanium or SUS316, it is possible to prevent the spring bar from being in direct contact with the band. Therefore, even if a flange for locking the jig is formed on the pin of the spring rod, it is possible to prevent the flange from being caught by the band and damaging the band. For this reason, it is not necessary to prepare separately the type without a flange as a spring bar, the kind of spring bar can be reduced and cost can be reduced.

  A watch with a magnetic sensor according to the present invention comprises a case incorporating a magnetic sensor, a non-metallic band connected to a can of the case, and a metallic pipe attached to the band and having a stepped portion formed on the inner surface. A through hole formed in the can and a pin inserted into the pipe; and a C ring disposed in the pipe and locked to the step portion by the insertion of the pin, the pipe and the pin Is made of a nonmagnetic material, and the C ring is made of an elastic nonmagnetic material.

  According to the present invention, since a non-metallic band such as a leather band is used as a watch band, it is possible to prevent the band from being magnetized and affecting the magnetic sensor. Also, as a connecting member for connecting the band to the can of the watch case, it is composed of a pipe and a pin made of non-magnetizable non-magnetic material such as titanium and elastic non-magnetizable non-magnetic material such as cobalt-nickel alloy. Since the connecting member is configured with the C ring, it is possible to prevent the connecting member from being magnetized and affecting the magnetic sensor. Therefore, it is possible to prevent the watch band and the connecting member of the band from being magnetized and to prevent the magnetic sensor from being affected, so that the magnetic sensor operates properly and the magnetic sensor detects and indicates the correct orientation. it can.

  In the timepiece with a magnetic sensor of the present invention, preferably, the pipe and the pin are made of SUS316 or a titanium material.

According to the present invention, since the pipe and the pin are made of SUS316 or a titanium material, the pipe and the pin can be prevented from being magnetized, and the magnetic sensor can be prevented from being affected by the magnetic field.
In addition, if the pipe and the pin are made of SUS316, it can be configured at a lower cost than a titanium material. In addition, if the pipe and the pin are made of titanium material, the weight can be reduced as compared with SUS316.

  In the timepiece with a magnetic sensor of the present invention, the C ring is preferably made of a cobalt-nickel alloy.

  According to the present invention, since the C ring is made of a cobalt-nickel alloy, it is possible to suppress the magnetization of the C ring and prevent the magnetic sensor from being affected by the magnetic field, and it is necessary as the C ring The springiness can also be secured.

  In the watch with a magnetic sensor of the present invention, the case includes a case main body incorporating the magnetic sensor, and a movable can connected to the case main body, and the band is connected to the movable can by the pin. Is preferred.

  According to the present invention, since the movable can is provided, when the watch with the magnetic sensor is mounted on the arm, the movable can can be rotated with respect to the case main body to fit on the wrist, and the mountability can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the timepiece with a magnetic sensor of 1st Embodiment of this invention. Sectional drawing which shows the connection structure of the can and band of said 1st Embodiment. Sectional drawing which shows the spring stick which connects the said can and a band. The perspective view which shows the timepiece with a magnetic sensor of the modification of a 1st embodiment of the present invention. The expanded sectional view which shows the attachment structure of the pull-through band of the said modification. The front view which shows the timepiece with a magnetic sensor of 2nd Embodiment of this invention. The perspective view which shows the timepiece with a magnetic sensor of said 2nd Embodiment. Sectional drawing which shows the connection structure of the movable can and band of said 2nd Embodiment. The expanded sectional view which shows the detail of the connection structure of the movable can and band of said 2nd Embodiment.

First Embodiment
Hereinafter, a watch 1 with a magnetic sensor (hereinafter, abbreviated as a watch 1) according to a first embodiment of the present invention will be described based on the drawings.
The watch 1 is a watch attached to the user's wrist, and includes an outer case 2 and a watch band 3 connected to the outer case 2 as shown in FIGS. The exterior case 2 is provided with a movement (not shown), a disc-shaped dial 4, a pointer 10, a crown 5 as an operation member, an A button 6, a B button 7 and a C button 8.

The dial 4 includes a main dial 40 and a sub dial 41. The hands 10 are provided with a center hand (an hour hand 11, a minute hand 12, a direction indicating hand 13) for instructing the main dial 40, and a small second hand 14 for instructing the sub dial 41.
The hour hand 11, the minute hand 12, the direction indicating hand 13, and the small second hand 14 are respectively driven by motors provided in the movement.

As shown in FIG. 2, the exterior case 2 includes a barrel 20, a back cover 26, and a glass rim 27, and these parts are made of a titanium material such as pure titanium. A pair of cans 21 to which the band 3 is attached is formed on the 12 o'clock side and the 6 o'clock side of the barrel 20, respectively.
The opposing surface of the pair of cans 21 is formed with a can hole 23 into which a spring rod 50 described later is inserted.
The exterior case 2 incorporates a magnetic sensor 25. In the timepiece 1 of the present embodiment, as shown in FIG. 1, the magnetic sensor 25 is disposed at a position near 12 o'clock of the dial 4 in plan view.
Then, when the compass mode for instructing the azimuth is selected by the operation of the operation member, the magnetic sensor 25 is activated to execute the azimuth measurement, and the azimuth indicating needle 13 instructs the direction of "North" based on the measurement result. Do.

As shown in FIG. 2, the band 3 includes an end piece 31 connected to a pair of cans 21 on the 12 o'clock and 6 o'clock sides of the outer case 2, a plurality of pieces 32, and a clasp not shown. Prepare.
The end piece 31 and the piece 32 are made of titanium material such as pure titanium. Further, for connection of the end piece 31 and the piece 32, a general C ring and pin can be used as a connection structure of a metal band. However, in order to improve the magnetic resistance performance, the pin is preferably made of a nonmagnetic material such as a titanium material or SUS316, and the C ring is preferably made of an elastic nonmagnetic material such as a cobalt-nickel alloy.
The clasp may be made of a titanium material, but it may be made of stainless steel such as SUS 304 because it is provided apart from the magnetic sensor 25 and there is almost no influence even if it is magnetized temporarily.

A through hole 311 penetrating in the width direction of the band 3 is formed in the end piece 31, and the spring rod 50 is inserted into the through hole 311.
The spring rods 50 inserted into the through holes 311 of the end piece 31 are inserted into the respective can holes 23 of the can 21 as described above, whereby the can 21 and the end piece 31, that is, the exterior case 2 and the band 3 are connected Be done. As shown in FIG. 2, the central axis of the through hole 311 and the central axis of the can hole 23 are formed so as to be deviated by a predetermined dimension L1. Thereby, the spring bar 50 is bent and disposed, and the band 3 is pressed against the case 2. As a result, the end piece 31 of the band 3 is connected to the case 2 without rotating.
Further, notches 312 communicating with both ends of the through hole 311 are formed on the back surface of the end piece 31 so that both ends of the spring rod 50 inserted into the through hole 311 are exposed to the notches 312. ing.

[Configuration of spring bar]
FIG. 3 is a cross-sectional view of the spring bar 50. The spring rod 50 is positioned between the cylindrical pipe 51, a pair of pins 52 inserted into both ends of the pipe 51, and a pair of pins 52 inside the pipe 51, and both pins 52 are located outside the pipe 51. And a spring 53 that biases toward.
The pipe 51 is a titanium pipe made of a pure titanium material which is a nonmagnetic material which is hard to be magnetized. The open end 511 of the pipe 51 is bent toward the central axis of the pipe 51 so that the diameter of the opening is smaller than the inner diameter of the pipe 51. The open end portion 511 engages with the step portion of the pin 52 (the step portion between the large diameter portion 521 and the small diameter portion 522 described later) to prevent the pin 52 from coming off the pipe 51.

Each pin 52 is made of a titanium material such as a titanium alloy which is a nonmagnetic material which is hard to be magnetized. Each pin 52 includes a large diameter portion 521, a small diameter portion 522, a flange 523 and an insertion portion 524.
The large diameter portion 521 is a portion disposed in the pipe 51 and in contact with the spring 53, and the diameter dimension thereof is larger than the dimension of the opening of the open end portion 511 of the pipe 51.
The small diameter portion 522 is formed continuously to the large diameter portion 521, and has a diameter smaller than the dimension of the opening of the opening end portion 511. Therefore, the small diameter portion 522 is provided so as to protrude to the outside of the pipe 51 through the opening of the open end portion 511.
Two flanges 523 are axially spaced at the end of the small diameter portion 522. The diameter of the flange 523 is larger than that of the small diameter portion 522. Furthermore, the flange 523 has a dimension larger than the opening dimension of the open end portion 511, and when the pin 52 is pushed into the pipe 51, the flange 523 may be further pressed by abutting on the open end portion 511. It is configured to be impossible. Further, the flange 523 has a dimension larger than the opening size of the can hole 23, and is configured such that the flange 523 abuts on the can 21 when the insertion portion 524 is inserted into the can hole 23.
The insertion portion 524 is formed continuously to the flange 523 and has a diameter smaller than the diameter of the small diameter portion 522. The insertion portion 524 is dimensioned to be insertable into the can holes 23 of the pair of cans 21.
The pin 52 configured in this manner can be advanced and retracted smoothly along the axial direction of the pipe 51.

  The spring 53 is a coil spring made of cobalt-nickel alloy. The cobalt-nickel alloy used for the spring 53 is a nonmagnetic material having a spring property (elasticity) and having a characteristic of being hard to magnetize.

  In the spring rod 50 configured as described above, the pin 52 is biased by the spring 53 and the small diameter portion 522 protrudes to the outside of the pipe 51 as shown in FIG. Is pushed toward the inside of the pipe 51, and can be advanced and retracted between the state where the flange 523 abuts on the open end 511 of the pipe 51.

Next, the process of connecting the end piece 31 of the band 3 to the can 21 of the exterior case 2 using the spring rod 50 will be described.
First, the spring bar 50 is inserted into the through hole 311 of the end piece 31.
Next, a jig for a spring rod is inserted from the notch 312 on the back surface of the end piece 31, and while the jig is engaged with the flange 523 and the pin 52 is pushed inside the pipe 51, the end piece 31 is paired with the can 21 Place between Then, when the insertion portion 524 is aligned with the position of the can hole 23 and the pressing force of the pin 52 by the jig is weakened, the pin 52 moves outward by the biasing force of the spring 53 and the insertion portion 524 is inserted into the hole 23. Be done. At this time, since the central axis of the through hole 311 into which the spring bar 50 is inserted and the central axis of the can hole 23 are deviated, the spring bar 50 is bent. Thus, the end piece 31 is pressed against the outer case 2 and fixed to the outer case 2 without rotating the end piece 31.
When the band 3 is removed, a jig is inserted from the notch portion 312, and the pin 52 is moved to the inside of the pipe 51 and removed from the can hole 23. Thereby, the engagement between the spring rod 50 and the can hole 23 is released, and the end piece 31 can be removed from the can 21.

[Operation and effect of the first embodiment]
According to such a 1st embodiment, the following operation effects can be produced.
Since the end piece 31 and the piece 32 made of titanium are used as the band 3, the metal band 3 can be prevented from being magnetized and affecting the magnetic sensor 25.
Further, since the pipe 51 made of titanium, the pin 52, and the spring 53 made of cobalt-nickel alloy are used as the spring bar 50 connecting the band 3 to the can 21, the spring bar 50 is made of a material difficult to magnetize. be able to. For this reason, it is possible to prevent the spring bar 50 from being magnetized, and the magnetic sensor 25 can detect the correct direction and instruct the direction pointing needle 13.

  Since the can 21 and the band 3 are connected using the spring bar 50, the diameter of the can hole 23 can be made smaller than when connecting using a titanium screw pin, and the design can be improved.

Modification of First Embodiment
The present invention is not limited to the first embodiment, and various modifications can be made within the scope of the present invention.
For example, the end piece 31 and the piece 32 are not limited to a titanium material, and SUS316 or the like may be used as long as it is a nonmagnetic material that is hard to be magnetized. Also, the spring 53 is not limited to the one made of cobalt-nickel alloy, and may be a nonmagnetic material having elasticity and being hard to be magnetized.
The band 3 is not limited to a metal band, and may be a leather band (leather band), a resin band (urethane band, nylon band, silicon band) or the like. That is, any band that can be fixed using the spring bar 50 may be used.

Also, as shown in FIGS. 4 and 5, the spring bar 50 can be used to attach the pull-through band 3A. The draw-through band 3A is composed of a non-metallic draw-in band such as a leather band, a resin band, or a silicone band. The pull-through band 3A is inserted between the spring rod 50 at the 6 o'clock side and the case 2 from between the spring rod 50 on the 12 o'clock side of the case 2 and the case 2 via the back cover 26 portion, It is attached to the case 2.
In addition, the spring bar 50 is covered with a cover member 60 made of nonmagnetic material. The cover member 60 is a metal pipe made of SUS 316 or a titanium material, and covers the spring bar 50 by inserting the spring bar 50 into the cover member 60. As a result, the flange 523 of the pin 52 of the spring rod 50 is not exposed to the outside, and the pull-in band 3A is inserted in contact with the cover member 60.

Since the spring rod 50 and the cover member 60 are made of a nonmagnetic material, it is possible to prevent the magnetizing of the spring rod 50 and the cover member 60, and the magnetic sensor 25 detects the correct orientation. Can be instructed.
Further, since the spring bar 50 is covered with the cover member 60, it is possible to prevent the flange 523 of the spring bar 50 from being exposed and coming into contact with the pulling band 3A. For this reason, it can also be prevented that the lead-in band 3A is caught on the flange 523 and torn.
In addition, when the spring bar in which the flange is not formed is used as a spring bar for pull-through band 3A, the cover member 60 can be made unnecessary. However, since the spring bar 50 made of titanium is expensive, it is difficult to prepare a plurality of spring bars 50 with or without a flange in addition to the width dimension between the pair of cans 21. On the other hand, if the cover member 60 is provided, the spring bar 50 can be used both as the ordinary band 3 and the pull-in band 3A, so the number of types of the spring bar 50 can be reduced and the cost can be reduced.

Second Embodiment
Hereinafter, a timepiece 100 with a magnetic sensor (hereinafter, abbreviated as a timepiece 100) according to a second embodiment of the present invention will be described based on the drawings. In the timepiece 100 of the second embodiment, the same components as those of the timepiece 1 of the first embodiment are given the same reference numerals, and the description thereof will be simplified or omitted.
The watch 100 is a watch attached to a user's wrist, and includes an outer case 120 and a band 130 connected to the outer case 120 as shown in FIGS. The exterior case 120 is provided with a movement (not shown), a disk-shaped dial 4, a pointer 10, a crown 5 as an operation member, an A button 6, a B button 7 and a C button 8.

The dial 4 includes a main dial 40 and a sub dial 41. The hands 10 are provided with a center hand (an hour hand 11, a minute hand 12, a direction indicating hand 13) for instructing the main dial 40, and a small second hand 14 for instructing the sub dial 41.
The hour hand 11, the minute hand 12, the direction indicating hand 13, and the small second hand 14 are respectively driven by motors provided in the movement.

As shown in FIG. 7, the exterior case 120 includes a case body 120A and movable cans 121 and 122 rotatably connected to the 12 o'clock and 6 o'clock sides of the case body 120A. The case body 120 </ b> A and the movable cans 121 and 122 are made of titanium, and are rotatably connected by a screw pin 123 made of titanium.
The movable cans 121 and 122 include a pair of attachment portions 124 to which the band 130 is connected. The mounting portion 124 is formed with a through hole 124A through which a pin 170 described later is inserted.

The exterior case 120 incorporates the magnetic sensor 25. In the timepiece 100 of the present embodiment, as shown in FIG. 6, the magnetic sensor 25 is disposed at a position near 12 o'clock of the dial 4 in plan view.
Then, when the compass mode for instructing the azimuth is selected by the operation of the operation member, the magnetic sensor 25 is activated to execute the azimuth measurement, and the azimuth indicating needle 13 instructs the direction of "North" based on the measurement result. Do.

  The band 130 includes a first leather band 131 connected to the movable can 121 on the 12 o'clock side of the outer case 120, and a second leather band 132 connected to the movable can 122 on the 6 o'clock side of the outer case 120; And the middle clasp 133. The clasp 133 is provided apart from the magnetic sensor 25 and is made of SUS 304 or the like because there is almost no influence even if it is magnetized temporarily.

The movable cans 121 and 122 and the leather bands 131 and 132 are connected by a connecting member 150 as shown in FIG. The connecting member 150 comprises a pipe 160, a pin 170 and a C-ring 180.
The pipe 160 and the pin 170 are made of SUS316 or titanium, and the C ring 180 is made of cobalt-nickel alloy. SUS316 or a titanium material is a nonmagnetic material that is difficult to magnetize. The cobalt-nickel alloy used for the C-ring 180 is a nonmagnetic material having elasticity (elasticity) and having a characteristic of being hard to magnetize.

The pipe 160 is formed in a cylindrical shape. In the inner circumferential surface of the pipe 160, as also shown in FIG. 9, a small diameter portion 161 with an inside diameter into which the pin 170 can be inserted and a large diameter portion 162 whose inside diameter is larger than the small diameter portion 161 Are formed continuously. For this reason, a step portion 163 is formed in a portion where the small diameter portion 161 and the large diameter portion 162 are continuous. For this reason, the pipe 160 is a pipe with an inner surface step.
The axial length L3 of the large diameter portion 162 is formed from one opening of the pipe 160 to the width L2 of the C ring 180, and is slightly longer than the width L2.

In addition, as shown in FIG. 9, the internal diameter (phi) 1 of the can hole 124A is made into the dimension which can insert the pin 170, for example, is 0.95 mm.
The inner diameter of the small diameter portion 161 of the pipe 160 is the same as the inner diameter φ1 of the can hole 124A (0.95 mm), the inner diameter φ2 of the large diameter portion 162 is 1.25 mm, and the axial length of the large diameter portion 162 L3 is 3.00 mm.
The height dimension of the step portion 163 is (inner diameter φ2 of the large diameter portion 162−inner diameter φ1 of the small diameter portion 161) / 2, and in the present embodiment, (1.25−0.95) /2=0.15 mm It is.

The pin 170 is formed in a rod shape having a circular cross section. The outer peripheral surface of the pin 170 includes a large diameter portion 171 disposed at a position corresponding to the small diameter portion 161 and a small diameter portion 172 disposed at a position corresponding to the large diameter portion 162. The small diameter portion 172 is formed at a position of a predetermined dimension from one end of the pin 170, and an insertion portion 173 to be inserted into the can hole 124A is formed on one end side of the small diameter portion 172. The insertion portion 173 is also formed at the other end of the pin 170 where the small diameter portion 172 is not formed.
The outer diameter φ3 of the large diameter portion 171 of the pin 170 is set to a size that can be inserted into the small diameter portion 161 of the pipe 160, and is, for example, 0.90 mm. The outer diameter φ4 of the small diameter portion 172 of the pin 170 is smaller than that of the large diameter portion 162 of the pipe 160, and is, for example, 0.80 mm.

The C ring 180 is disposed at the large diameter portion 162 of the pipe 160. Here, when the large diameter portion 171 of the pin 170 is inserted into the C ring 180 portion, the C ring 180 spreads outward and is disposed in the large diameter portion 162 portion. Thus, the large diameter portion 171 of the pin 170 can be inserted into the C ring 180. Further, when the large diameter portion 171 is disengaged from the C ring 180 by pushing the pin 170 and the small diameter portion 172 moves into the C ring 180, the C ring 180 returns to the original state. The outer diameter φ5 of the C ring 180 disposed in the small diameter portion 172 of the pin 170 is larger than the inner diameter φ1 of the can hole 124A or the small diameter portion 161.
For this reason, even if the pin 170 with the C ring 180 fitted in the small diameter portion 172 moves in the left direction in FIG. 9, the end face of the C ring 180 abuts on the step portion 163 of the pipe 160, and the movement is restricted. Further, even if the pin 170 tries to move in the right direction in FIG. 9, the end face of the C ring 180 abuts on the attachment portion 124, so that the movement is restricted. Therefore, the pin 170 is attached to the pipe 160 with restricted axial movement.
Under the present circumstances, since each insertion part 173 formed in the both ends of the pin 170 is inserted in each can hole 124A, as shown in FIG. 8, the band 130 can be connected with the movable cans 121 and 122. .

Next, the process of connecting the band 130 to the movable cans 121 and 122 using the connecting member 150 will be described.
First, the pipe 160 is inserted into the end of the band 130. The end of the band 130 is folded back or the like to form a through hole into which the pipe 160 can be inserted. The pipe 160 is inserted into the through hole.
Further, the C ring 180 is disposed at the large diameter portion 162 of the pipe 160. The arrangement of the C ring 180 may be either before or after the pipe 160 is inserted into the through hole of the band 130.
Next, the end of the band 130 containing the pipe 160 and the C-ring 180 is disposed between the mounting portions 124 of the movable cans 121 and 122. Then, the pin 170 is inserted into the pipe 160 from the can hole 124 A of the mounting portion 124.
Then, the springy C ring 180 is pushed outward by the large diameter portion 171 of the pin 170, the large diameter portion 171 passes through the C ring 180, and the small diameter portion 172 moves inside the C ring 180. The C ring 180 is reduced in diameter so as to be in close contact with the small diameter portion 172. As a result, the C ring 180 is locked to the small diameter portion 172 of the pin 170, and the C ring 180 is engaged between the step portion 163 and the attachment portion 124 of the movable can 121, 122. It is prevented from falling out of the hole 124A. Thus, the end of the band 130 is connected to the movable cans 121 and 122.
When the band 130 is removed, a jig is inserted from the can hole 124A, the pin 170 is moved, the C ring 180 is expanded in diameter, and the C ring 180 is removed from the small diameter portion 172 portion. As a result, since the locking of the pin 170 by the C ring 180 is released, the pin 170 can be pushed and removed from the pipe 160 as it is. Thereby, the band 130 can be removed from the movable cans 121 and 122.

[Operation and effect of the second embodiment]
According to the second embodiment, the following effects can be obtained.
Since the leather bands 131 and 132 are used as the band 130, it is possible to prevent the leather bands 131 and 132 from being magnetized and affecting the magnetic sensor 25.
In addition, as the connecting member 150 for connecting the band 130 to the movable cans 121 and 122, the pipe 160 made of SUS 316 or titanium, the pin 170, and the C ring 180 made of cobalt-nickel alloy are used. The connecting member 150 can be configured.
For this reason, it is possible to prevent the coupling member 150 from being magnetized and affecting the magnetic sensor 25. Also when detecting the azimuth by the magnetic sensor 25, it is possible to detect the correct azimuth and instruct with the azimuth pointing needle 13.
In particular, when the leather bands 131 and 132 move with respect to the movable cans 121 and 122 due to the wearing state of the watch 100 on the wrist of the user, the connecting member 150 also moves. For this reason, if the connecting member 150 is temporarily magnetized, the balance between the 12 o'clock side magnetic field of the magnetic sensor 25 and the 6 o'clock side magnetic field changes, which affects the azimuth detection, and an error is detected in the detected azimuth It occurs. On the other hand, in the present embodiment, since the connecting member 150 is made of only a material that is hard to magnetize, even if the connecting member 150 moves, the magnetic sensor 25 does not affect the balance of the magnetic field, It can be detected.

In general metal bands, only pins and C-rings are used as connecting members, but in the case of leather bands 131 and 132, there is no portion for containing C-rings, so leather bands 131 and 132 and movable cans 121 and 122 Could not be connected, and it was necessary to use a spring bar.
On the other hand, in this embodiment, a pipe 160 having an inner surface step is newly prepared, and the pipe 160 is inserted into the leather bands 131 and 132. Thus, the C ring 180 can be accommodated in the large diameter portion 162 of the pipe 160, and the movable cans 121 and 122 and the leather bands 131 and 132 can be coupled using the pin 170 and the C ring 180. Thereby, compared with the structure connected using a spring rod, a coil spring can be made unnecessary and cost can be reduced.

  Since the movable cans 121 and 122 and the band 130 are connected using the pin 170, the connecting member 150 is compared with the case where the movable cans 121 and 122 and the band 130 are connected using a screw pin made of titanium. You can reduce the size of Therefore, the end of the band 130 can be made thin, and the diameter of the can hole 124A can be made small, so that the design can be improved.

Modified Example of Second Embodiment
The present invention is not limited to the second embodiment, and various modifications can be made within the scope of the present invention.
For example, the band 130 may be one using a soft lock or a stick without providing the clasp 133. The band 130 is not limited to a leather band (leather band), but may be a resin band (urethane band, nylon band, silicon band) or the like, as long as it is a nonmetallic band.
The connecting member 150 of the embodiment is used to connect the band 130 to the movable cans 121 and 122, but can be used also when connecting the band 130 to a can integrally formed on the case main body 120A.

  DESCRIPTION OF SYMBOLS 1 ... Clock with magnetic sensor, 2 ... Outer case, 3 ... band, 3A ... lead-through band, 4 ... dial plate, 5 ... crown, 6 ... A button, 7 ... B button, 8 ... C button, 10 ... pointer, 11 ... hour hand, 12 ... minute hand, 13 ... direction pointing hand, 14 ... small second hand, 20 ... body, 21 ... can, 23 ... can hole, 25 ... magnetic sensor, 26 ... back cover, 27 ... glass edge, 31 ... end Pieces 32 32 pieces 40 main dials 41 sub dials 50 spring bars 51 pipes 52 pins 53 springs 60 cover members 311 through holes 312 cutouts 511 Opening end portion 521 Large diameter portion 522 Small diameter portion 523 Flange 524 Insertion portion 100 Clock with magnetic sensor 120 Outer case 120A Case main body 121, 122 Movable can 123 Screw , 124: mounting portion 124A: can hole, 130: band, 131: first leather band, 132: second leather band, 133: clasp, 150: connecting member, 160: pipe, 161: small diameter portion, 162: large diameter part, 163: step part, 170: pin, 171: large diameter part, 172: small diameter part, 173: insertion part, 180: C ring.

Claims (9)

With a case that incorporates a magnetic sensor,
With a watch band,
A spring bar for attaching the band to a can of the case;
The spring bar comprises a pipe, a pin and a spring,
The pipe and the pin are made of nonmagnetic material,
The watch with a magnetic sensor characterized in that the spring is made of an elastic nonmagnetic material. In the timepiece with a magnetic sensor according to claim 1,
The watch with a magnetic sensor, wherein the pipe and the pin are made of a titanium material. In the timepiece with a magnetic sensor according to claim 1 or 2,
The watch with a magnetic sensor characterized in that the spring is made of cobalt-nickel alloy. The timepiece with a magnetic sensor according to any one of claims 1 to 3.
The band has an end piece composed of a nonmagnetic material,
A watch with a magnetic sensor, wherein the end piece is attached to the can of the case with the spring bar. The timepiece with a magnetic sensor according to any one of claims 1 to 3.
The spring bar is covered with a cover member made of a nonmagnetic material,
The watch is a watch with a magnetic sensor, wherein the band is a non-metallic pull-through band. With a case that incorporates a magnetic sensor,
A non-metallic band connected to the can of the case;
A metal pipe attached to the band and having a step on the inner surface;
A through hole formed in the can and a pin inserted into the pipe;
And a C-ring disposed in the pipe and locked to the stepped portion by the insertion of the pin.
The pipe and the pin are made of nonmagnetic material,
A watch with a magnetic sensor, wherein the C ring is made of an elastic nonmagnetic material. In the timepiece with a magnetic sensor according to claim 6,
The watch with a magnetic sensor, wherein the pipe and the pin are made of SUS316 or a titanium material. In the timepiece with a magnetic sensor according to claim 6 or 7,
The C-ring is made of a cobalt-nickel alloy. A watch with a magnetic sensor. A watch with a magnetic sensor according to any one of claims 6 to 8,
The case includes a case body containing the magnetic sensor, and a movable can connected to the case body.
The watch with a magnetic sensor, wherein the band is connected to the movable can by the pin.

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