JP2007325715A - Clasp, band-shaped adornment, and watch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clasp whose length can be easily and securely adjusted, a band-shaped adornment with the clasp, and a watch. <P>SOLUTION: The clasp comprises an upper band connecting unit 40 to which an upper band 5A of a band 5 is connected, a front cover 11 and a guide cover 20 to which a lower band 5B is connected. The front cover 11 is provided with a plurality of locked parts (a first locking hole part 19A and a second locking hole part 19B) disposed at a spaced interval in the longitudinal direction of the band 5. The upper band connection unit 40 includes a locking member 41 locked with any one of the locked parts, a coil spring 44 for energizing the locking member 41 in a direction locked with the locked part, and a connector body (a storage case 50 and connection pieces 60) which is movable relative to the locking member 41 when the external force is applied in the longitudinal direction of the upper band 5A. The connector body has an opening part 55 for moving the locking member 41 to a position separated from the locked part when the connector body is moved relative to the locking member 41. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a length adjusting mechanism for middle ends.

Various straps are used for the strip-shaped jewelry wound around the body. For example, in a wristwatch that is one of the band-shaped accessories, a folding-type center stopper such as a two-folded middle ring, a three-folded middle string, or a double-folded (double doorfold) middle dot is used. For such a folding-type inner ring, the button unit connected to the band with the intermediate cover is locked by a push button, and an adjustment tool is inserted into the operation hole of the button unit to disengage the push button. There is one that enables fine adjustment of the band length by adjusting the locking position of the unit (for example, Patent Document 1).
In addition, in this type of clasp, a moving member connected to the band is movably supported on the middle cover, and a push button for locking / unlocking the middle clip is locked in the moving member, and the push is pushed. Unlocking the middle of the button within the initial movable range of the button, unlocking the push button and the band connector within the larger movable range, and unlocking the middle of the middle and slightly adjusting the band length by operating the push button The thing which enabled adjustment is proposed (for example, patent document 2).
JP 2001-258618 A JP 2005-270748 A

However, since the device described in Patent Document 1 requires an adjustment tool when finely adjusting the band length, there is an inconvenience of storing the adjustment tool and taking out the adjustment tool every time fine adjustment is necessary. There was also a risk of losing the adjustment tool.
Moreover, the thing of patent document 2 had the problem that the boundary of the unlocking position at the time of push-button pressing and a length adjustment position is difficult to understand, and it is difficult for a user to understand the length adjustment position, and it is difficult to operate.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an intermediate string capable of easily and surely adjusting the length of the band-shaped body, and a band-shaped accessory and a watch including the intermediate string. .

  In order to solve the above-mentioned problem, the present invention comprises a first connecting body to which one belt-like body of a pair of belt-like bodies is connected and a second connecting body to which the other belt-like body is connected, in Nakadome, The second connecting body is provided with a plurality of locked portions at intervals in the length direction of the belt-like body, and the first connecting body is locked to any of the plurality of locked portions. A locking member, a biasing member for biasing the locking member to the side to be locked to the locked portion, and the one band-shaped body are connected, and an external force acts in the length direction of the band-shaped body. And a connecting body main body relatively movable with respect to the locking member, and the connecting body main body moves the locking member from the locked portion when moved relative to the locking member. It has the movement guide part which moves to the position which remove | deviates, It is characterized by the above-mentioned.

  According to this invention, the first connecting body to which one belt-like body is connected is engaged with one of the plurality of locked portions formed on the second connecting body to which the other belt-like body is connected. The stop member, the biasing member that biases the locking member to the side to be locked to the locked portion, and one belt-like body are connected, and the external member acts in the length direction of the belt-like body. A connecting body that is movable relative to the locking member, and the connecting body moves the locking member to a position that is disengaged from the locked portion when moved relative to the locking member. Therefore, it is possible to easily and reliably move the locking member to a position where it can be removed from the locked portion and locked to another locked portion by a simple operation of moving the belt-like body in its length direction. .

  The said structure WHEREIN: It is preferable that the said movement guide part has an inclined surface which the said locking member contact | abuts and guides the said locking member to the position which remove | deviates from the to-be-latched part. According to this configuration, the locking member can be reliably moved from the inclined surface to a position that is disengaged from the locked portion.

  In the above configuration, the inclined surface moves the locking member away from the locked portion when the connecting body moves in a direction in which the pair of band-shaped bodies are separated from the locking member. When the first inclined surface to be guided and the connecting body main body move in a direction in which the pair of band-shaped bodies are brought close to the locking member, the locking member is guided to a position where the locking member is released from the locked portion. And a second inclined surface. According to this configuration, in any case where the connecting body main body moves in the length direction of the pair of strips with respect to the locking member, the locking member is covered by the first inclined surface and the second inclined surface. It can be reliably moved to a position where it is disengaged from the locking portion.

  The said structure WHEREIN: It is preferable to make the said 1st inclined surface incline rather than the said 2nd inclined surface. According to this configuration, the first inclined surface that guides the connecting body main body to a position that is disengaged from the locked portion when the connecting body main body is pulled in the direction in which the pair of belt-like bodies are separated from each other, makes the connecting body main body close to the pair of belt-like bodies. Because it is steeper than the second inclined surface that guides it to the position where it is disengaged from the locked portion when it is pushed in the direction, the operating force when pulling the strip to lengthen it is shortened by pushing the strip Can be larger. For this reason, the case where the length of a strip | belt shaped body changes unintentionally when the unintentional tensile force acts on a strip | belt shaped body can be prevented reliably.

  Further, in the above configuration, a reference guide surface is provided between the first inclined surface and the second inclined surface and guides the locking member to a position where the locking member can be locked to the locked portion. It is preferable that the curvature of the connecting portion between the reference guide surface and the first inclined surface is smaller than the curvature of the connecting portion between the reference guide surface and the second inclined surface. According to this configuration, the operating force when pulling the belt-like body to be longer can be made larger than the operating force when pushing and shortening the belt-like body, and when an unintended pulling force acts on the belt-like body, A case where the length of the belt-like body changes unintentionally can be surely prevented.

  In the above configuration, the movement guide portion has an opening formed in the first coupling body, and the locking member rises from a locking member main body extending in the width direction of the belt-like body and enters the opening. It is preferable to have an upright portion that is positioned and abuts against the inner wall surface of the opening by the urging force of the urging member, and the inner wall surface of the opening has the inclined surface. According to this configuration, since the movement guide portion is the opening formed in the first connection body, the number of components can be reduced compared to the case where a component different from the first connection body is configured as the movement guide portion. it can.

  Further, the present invention provides a strip-shaped accessory including a middle ring that couples a pair of belt-shaped bodies, wherein the middle string includes a first coupled body to which one belt-shaped body is coupled and a first coupled body to which the other belt-shaped body is coupled. The second connecting body is provided with a plurality of locked portions at intervals in the length direction of the belt-like body, and the first connecting body includes the plurality of locked bodies. A locking member that is locked to any one of the portions, a biasing member that biases the locking member to the side to be locked to the locked portion, and the one band-shaped body are coupled to each other. A coupling body that is relatively movable with respect to the locking member when an external force is applied in the longitudinal direction, and the coupling body is moved when the relative movement is made with respect to the locking member. It has a movement guide part which moves to the position which removes from the to-be-latched part.

  According to this invention, the first connecting body to which one belt-like body is connected is engaged with one of the plurality of locked portions formed on the second connecting body to which the other belt-like body is connected. The stop member, the biasing member that biases the locking member to the side to be locked to the locked portion, and one belt-like body are connected, and the external member acts in the length direction of the belt-like body. A connecting body that is movable relative to the locking member, and the connecting body moves the locking member to a position that is disengaged from the locked portion when moved relative to the locking member. Therefore, it is possible to easily and reliably move the locking member to a position where it can be removed from the locked portion and locked to another locked portion by a simple operation of moving the belt-like body in its length direction. .

  Further, the present invention provides a timepiece comprising a watch body, a pair of belt-like bodies connected to the watch body, and a center clip connecting the pair of belt-like bodies. And a second connecting body connected to the other belt-like body, and the second connecting body includes a plurality of locked portions at intervals in the length direction of the belt-like body. The first connecting body includes a locking member that is locked to any of the plurality of locked portions, and a biasing force that biases the locking member toward the side that is locked to the locked portion. A biasing member and the one band-like body connected to each other, and when an external force is applied in the longitudinal direction of the band-like body, the connecting member main body is relatively movable with respect to the locking member. And a movement guide portion that moves the locking member to a position that is disengaged from the locked portion when moved relative to the locking member. Characterized in that it has.

  According to this invention, the first connecting body to which one belt-like body is connected is engaged with one of the plurality of locked portions formed on the second connecting body to which the other belt-like body is connected. The stop member, the biasing member that biases the locking member to the side to be locked to the locked portion, and one belt-like body are connected, and the external member acts in the length direction of the belt-like body. A connecting body that is movable relative to the locking member, and the connecting body moves the locking member to a position that is disengaged from the locked portion when moved relative to the locking member. Therefore, it is possible to easily and reliably move the locking member to a position where it can be removed from the locked portion and locked to another locked portion by a simple operation of moving the belt-like body in its length direction. .

  According to the present invention, the first connecting body to which one belt-like body is connected is a locking member that is locked to any one of a plurality of locked portions formed on the second connecting body to which the other belt-like body is connected. And a biasing member that biases the locking member to the side to be locked to the locked portion, and one band-like body are connected, and when an external force acts in the length direction of the band-like body, the locking member A connecting body that is relatively movable with respect to the locking body, and the connecting body has a movement guide portion that moves the locking member to a position that is disengaged from the locked portion when moved relative to the locking member. Therefore, the length of the strip can be adjusted easily and reliably by a simple operation of moving the strip in the length direction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing an external configuration of a wristwatch according to an embodiment of the present invention. The wristwatch 1 includes a timepiece main body 3 that displays time and a pair of bands (band-like bodies) 5 connected to upper and lower ends (so-called cans) of the timepiece main body 3. The watch body 3 is provided with a movement, a dial, a time display hand, and the like in a metal case made of stainless steel, titanium or the like, and is sealed in a watertight structure with a windshield and a back cover. In the present embodiment, a wristwatch that displays an analog time is exemplified, but a wristwatch that digitally displays the time may be used.

  The band 5 is configured by connecting a large number of pieces made of a metal material such as stainless steel or titanium. The band 5 is composed of an upper band 5A and a lower band 5B. The bands 5A and 5B are locked by a middle ring 10 to allow the wristwatch 1 to be worn on a wearing site (wearer's wrist). Note that the band 5 is not limited to a structure in which a large number of pieces made of a metal material are connected, and may be a rubber band such as a leather band or urethane rubber.

  As shown in FIG. 2, the intermediate retainer 10 includes a front cover 11 functioning as a front cover, a pair of left and right intermediate plates 13 connected to the front cover 11 by connecting pins 12, and connecting pins 14 to the intermediate plates 13. The intermediate plate 13 and the lower plate 15 are configured to be foldable under the front cover 11. A lower band 5B is connected to the lower plate 15 via a connecting pin 16, whereby the lower cover 5B has a front cover 11, an intermediate plate 13, a lower plate 15, and a guide cover 20 fixed to the front cover 11. (Refer FIG. 3) are integrally connected, and these comprise the connection body (2nd connection body) connected with the lower band 5B.

The front cover 11 integrally has a lid portion 11A extending in the band length direction and left and right side walls 11B and 11C. As shown in FIG. 3, the front cover 11 includes a guide cover 20, A button unit 30 and an upper band connecting unit (first connecting body) 40 are disposed.
As shown in FIGS. 3 and 4, a pair of left and right pin hole portions through which the connecting pin 12 for attaching the intermediate plate is inserted in the side walls 11 </ b> B and 11 </ b> C of the front cover 11 with an interval in the band length direction. 17, a pair of left and right button holes 18 for projecting a pair of left and right push buttons 31 provided on the button unit 30 from the side walls 11 </ b> B and 11 </ b> C, and a pair of left and right locking members provided on the upper band connecting unit 40. A pair of left and right first locking holes 19 </ b> A and second locking holes 19 </ b> B that function as a plurality of locked portions that 41 locks are formed.

The guide cover 20 is a cover that is fixed inside the upper band 5A and holds the button unit 30 and also holds the upper band connecting unit 40 movably in the band length direction. As shown in FIG. The lid portion 21A extending in the length direction and the left and right side walls 21B and 21C are integrally formed, and the outer shape of the guide cover 20 has a shape that substantially matches the inner shape of the front cover 11, The length is shorter than the front cover 11.
The side walls 21B and 21C of the guide cover 20 have a pair of left and right button hole portions 22 communicating with the button hole portion 18 of the front cover 11 at intervals in the band length direction, and a pair of left and right buttons extending in the band length direction. A long hole portion 23 is formed. The pair of left and right elongated holes 23 are provided so as to communicate with both the first locking hole 19 </ b> A and the second locking hole 19 </ b> B of the front cover 11.
Further, the lid portion 21A of the guide cover 20 is provided with a screw attachment opening 25 for attaching a screw 70 (see FIG. 3) to the upper band connecting unit 40. The guide cover 20 can be fixed by press-fitting the guide cover 20 to the front cover 11 or by engaging and disengaging the guide cover 20 and the front cover 11 with engaging convex portions and concave portions. A method of fixing them together or a method of screwing them may be applied.

The button unit 30 functions as a locking portion that engages with a hook 15A provided on the lower plate 15, and accommodates a pair of left and right push buttons 31 movably in the left-right direction (band width direction). 31 is urged to the left and right sides of the band by an urging member (spring or the like) (not shown).
The push button 31 protrudes left and right outward through the button holes 22 and 18 of the guide cover 20 and the front cover 11, and is arranged to be pressed from the outside. The left and right push buttons 31 are each provided with a pair of locking portions 31A and 31B exposed in the opening 35 on the back side of the button unit 30, and the pair of locking portions 31A and 31B are provided with the biasing member. Is biased in the direction of narrowing the gap.

  When the intermediate retainer 10 is folded, the hook 15A (see FIG. 2) of the lower plate 15 enters the opening 35 of the button unit 30, and is sandwiched between the pair of locking portions 31A and 31B there. Is locked in a folded state. Further, when unlocking the middle terminal 10, if both the left and right push buttons 31 are pressed simultaneously, the gap between the pair of locking portions 31A and 31B increases, and the engagement between the button unit 30 and the hook 15A is released. It is burned. In this way, since the middle lock 10 is unlocked by simultaneous operation of the left and right push buttons 31, even if one of the push buttons 31 hits an obstacle and one of the buttons 31 is pushed, The middle terminal 10 does not come off, and the wristwatch 1 can be prevented from falling off.

  The upper band connecting unit 40 constitutes a connecting body (first connecting body) to which the upper band 5A is connected. In this embodiment, the piece 5A1 at the end of the upper band 5A is connected to the upper band via the connecting piece 5A2. It is connected to the unit 40. As shown in FIG. 5, the upper band connecting unit 40 includes a locking unit 42 that houses a pair of left and right locking members 41 movably in the left-right direction (band width direction), and the locking unit 42 inside. A housing case 50 for housing and a connecting piece 60 connected to the housing case 50 for connecting the upper band 5A are provided. The housing case 50 and the connecting piece 60 are connected to hold the locking unit 42. It constitutes the unit body (connector body).

As shown in FIGS. 5 and 6, the locking unit 42 includes a pair of left and right locking members 41, a unit frame 43 that slidably holds the locking members 41 in the band width direction, and an inside of the unit frame 43. And a coil spring (urging member) 44 that urges the locking member 41 held by the arm. In addition, since the pair of left and right engaging members 41 has a bilaterally symmetric shape, only one of them is shown in FIG.
More specifically, the locking member 41 is formed such that the front end portion 41B of the locking member main body 41A formed in a substantially flat plate shape is tapered, whereby the first locking hole portion 19A and the second locking portion of the front cover 11 are formed. It is formed in a shape that can be locked to the stop hole portion 19B. In addition, an upright portion 41C that bends and rises upward is integrally formed at the base end portion of the locking member main body 41A. Further, the locking member main body 41A extends from the base end portion toward the distal end portion 41B. A cutout 41D is formed.
When the locking member 41 is arranged in the unit frame 43, the cutout portions 41D of the pair of left and right locking members 41 are aligned in a straight line in the left-right direction as shown in FIG. By arranging the spring 44, the pair of left and right engaging members 41 are urged outward in the left and right directions. Conventionally, when a pair of left and right locking members of this type are biased outward in the left and right direction, a spring member has been arranged for each locking member. However, in this embodiment, each coil member is connected by a single coil spring. Since the stop member is urged, the number of parts can be reduced correspondingly, and the size can be reduced.

As shown in FIG. 5, the housing case 50 is manufactured by bending a plate-like member made of a rigid material such as metal into a substantially U-shape, or by integrally molding a molding material such as a resin material, A flat bottom plate portion 51, a wall portion 52 that is bent and rises from one end side of the bottom plate portion 51, and an upper plate portion 53 that extends along the bottom plate portion 51 from above the wall portion 52 are provided.
The upper plate part 53 is formed with a notch part 54 for positioning the connecting piece 60 and an opening part (movement guide part) 55 that is partially opened in the notch part 54. The upright portion 41 </ b> C provided on the pair of left and right locking members 41 is inserted into the gap between the upper plate portion 53 and the bottom plate portion 51 of the housing case 50 so as to be positioned in the opening 55.

Further, the upper plate portion 53 and the bottom plate portion 51 of the housing case 50 are provided with a pair of upper and lower screw insertion holes 56 and 57 on the left and right sides of the cutout portion 54.
The connecting piece 60 includes a pair of left and right foot portions 61 and a connecting portion 62 that connects the foot portions 61, and is formed in a substantially U-shape when viewed from above. The connecting portion 62 has a convex portion above the upper surface of the foot portion 61, and the convex portion 62 </ b> A is formed in a shape that fits into the cutout portion 54 of the housing case 50. Then, the connecting piece 60 is inserted between the upper plate portion 53 and the bottom plate portion 51 of the housing case 50, and the projecting portion 62 </ b> A is fitted into the notch portion 54, whereby the connecting piece 60 is positioned in the housing case 50. At this positioning position, the screw hole 65 formed in the foot part 61 of the connecting piece 60 and the holes 56 and 57 of the housing case 50 communicate with each other, and the screw 70 is fastened to the connecting piece. 60 and the storage case 50 are connected.
The pair of left and right legs 61 of the connecting piece 60 are respectively formed with pin hole portions 66 extending in the band width direction, and the connecting piece 5A2 is rotated via the connecting pins inserted through the pin hole portions 66. The upper band 5 </ b> A is connected to the upper band connecting unit 40.

FIG. 8 is a view showing a state in which the upper band connecting unit 40 is incorporated in the guide cover 20. As shown in this figure, the width W1 of the unit frame 43 of the locking unit 42 is larger than the width W2 of the housing case 50, more specifically, is formed to be substantially the same width as the width W3 of the guide cover 20. Yes. For this reason, as shown in the figure, by disposing the unit frame 43 of the locking unit 42 in the long hole portion 23 of the guide cover 20, the locking unit 42 does not fall out of the guide cover 20 and the band length It is supported so as to be movable in the vertical direction.
Further, the length L1 of the locking unit 42 in the band length direction is formed to be smaller than the length of the gap (band length direction) L2 in the housing case 50. The band connecting unit 40 is movable relative to the locking unit 42 in the band length direction.

In the present embodiment, as shown in FIG. 8, the upright portion 41 </ b> C rising from the pair of left and right locking members 41 of the locking unit 42 is located in the opening 55 provided in the upper plate portion 53 of the housing case 50. Therefore, the upright portions 41C abut against the inner wall surface of the opening 55 by the biasing force of the coil spring 44, and the amount of protrusion of the locking member 41 in the band width direction is regulated by the inner wall surface.
The inner wall surface of the opening 55 includes a reference guide surface 55A that is parallel to the band length direction, and a first slope that is inclined obliquely toward the band center axis X from the end of the reference guide surface 55A opposite to the upper band 5A. There is an inclined surface 55B and a second inclined surface 55C inclined obliquely from the upper band 5A side end of the reference guide surface 55A toward the band center axis X. These surfaces 55A to 55C are based on the band center axis X. The first restricting surface 55D extending in the band width direction connecting between the left and right first inclined surfaces 55B and the second restricting surface extending in the band width direction connecting between the left and right second inclined surfaces 55C so as to be formed symmetrically to each other. 55E (the surface of the opening 55) is formed. That is, the opening 55 is formed in a substantially octagonal shape by the surfaces 55A to 55C forming the left and right six surfaces and the regulation surfaces 55D and 55E forming the two front and rear surfaces.

  As shown in FIG. 8, the reference guide surface 55 </ b> A causes the distal end portion 41 </ b> B of the locking member 41 in contact with the surface 55 </ b> A to protrude from the unit frame 43 of the locking unit 42, thereby causing the locking member 41 to move. It functions as a surface that guides to a position that can be locked to the front cover 11. For this reason, when the upright portion 41C of the locking member 41 comes into contact with the reference guide surface 55A, the locking member 41 is locked to the front cover 11, and the band length is fixed.

Next, the operation when finely adjusting the band length will be described.
As shown in FIG. 9A, when the locking member 41 of the locking unit 42 is locked in the first locking hole portion 19A of the front cover 11, the user moves the upper band 5A from the lower band 5B. When pulled in the separating direction (downward in the figure), the upper band connecting unit 40 connected to the upper band 5A moves relative to the locking member 41 in the downward direction in the figure, and accordingly, the locking member The position where the upright portion 41 </ b> C of the 41 abuts moves from the reference guide surface 55 </ b> A of the opening 55 to the first inclined surface 55 </ b> B.
In this case, as shown in FIG. 9 (b), the upright portion 41C contracts the coil spring 44 along the inclination of the first inclined surface 55B and moves inward in the bandwidth direction, so that the left and right engaging members 41 are moved. Retract into the unit frame 43 of the locking unit 42. Therefore, the left and right locking members 41 are disengaged from the first locking holes 19A of the front cover 11, and the upper band connecting unit 40 including the locking members 41 separates the upper band 5A and the lower band 5B (see FIG. (Middle down)
During this movement, the upright portion 41C of the locking member 41 is held in the opening 55 by the first restriction surface 55D, so that the state in which the upright portion 41C is in contact with the first inclined surface 55B continues. The left and right locking members 41 are held in the positions retracted into the unit frame 43, and the upper band connecting unit 40 can be moved with a light force.

Then, when the locking member 41 reaches the position of the second locking hole 19B of the front cover 11 and the force acting on the locking unit 42 is released, as shown in FIG. The locking member 41 protrudes toward the second locking hole 19B by the urging force of the coil spring 44 and fits into the second locking hole 19B. In this case, at the position where the locking member 41 is fitted in the second locking hole 19 </ b> B, the upright portion 41 </ b> C of the locking member 41 contacts the reference guide surface 55 </ b> A of the opening 55 due to the biasing force of the coil spring 44. Since the upper band connecting unit 40 and the locking member 41 do not move relative to each other, the band length is fixed at this position.
Accordingly, the band 5 can be lengthened by the amount that the locking member 41 has moved from the position locked in the first locking hole 19A of the front cover 11 to the position locked in the second locking hole 19B. it can.

On the other hand, as shown in FIG. 10A, when the locking member 41 of the locking unit 42 is locked in the second locking hole portion 19B of the front cover 11, the user moves the upper band 5A to the lower band. When pushed in a direction close to 5B (upward in the figure), the upper band connecting unit 40 connected to the upper band 5A moves relative to the locking member 41 in the upward direction in the figure. The position where the upright portion 41C of the stop member 41 abuts moves from the reference guide surface 55A of the opening 55 to the second inclined surface 55C.
In this case, as shown in FIG. 10 (b), the upright portion 41C contracts the coil spring 44 along the inclination of the second inclined surface 55C and moves inward in the bandwidth direction, so that the left and right locking members 41 are moved. Retract into the unit frame 43 of the locking unit 42.
For this reason, the left and right locking members 41 are disengaged from the second locking holes 19B of the front cover 11, and the upper band connecting unit 40 including the locking members 41 brings the upper band 5A and the lower band 5B closer to each other (see FIG. It is possible to move in the middle up direction.
During this movement, the upright portion 41C of the locking member 41 is held in the opening 55 by the second restriction surface 55E, so that the state in which the upright portion 41C is in contact with the second inclined surface 55C continues. The left and right locking members 41 are held in the positions retracted into the unit frame 43, and the upper band connecting unit 40 can be moved with a light force.

When the locking member 41 reaches the position of the first locking hole 19A of the front cover 11 and the force applied to the locking unit 42 is released, as shown in FIG. The locking member 41 protrudes toward the first locking hole 19A by the urging force of the coil spring 44, and fits into the first locking hole 19A. In this case, at the position where the locking member 41 is fitted in the second locking hole 19 </ b> B, the upright portion 41 </ b> C of the locking member 41 contacts the reference guide surface 55 </ b> A of the opening 55 due to the biasing force of the coil spring 44. Since the upper band connecting unit 40 and the locking member 41 do not move relative to each other, the band length is fixed at this position.
Accordingly, the band 5 can be shortened by the amount that the locking member 41 has moved from the position locked in the second locking hole 19B of the front cover 11 to the position locked in the first locking hole 19A. it can.

As described above, in the present embodiment, when the upper band connecting unit 40 is moved relative to the locking member 41 in the band length direction, the movement for moving the locking member 41 to a position where it is removed from the front cover 11. Since the opening 55 functioning as a guide portion is provided, when an external force in the band length direction is applied to the upper band 5A connected to the upper band connecting unit 40, the locking member 41 is detached from the front cover 11 It can be moved in the direction of external force. Thus, the user can easily fine-tune the band length without using an adjustment tool by simply pulling or pushing the upper band 5A in the direction in which the band length is to be adjusted, or pushing it. Can do.
In addition, in this configuration, since the exclusive push button 31 for locking / unlocking the middle terminal 10 is provided, the conventional one that unlocks the middle terminal and finely adjusts the band length only by operating the push button. In comparison, the user can perform the above operations easily and reliably without confusion between the length adjustment operation and the unlocking operation of the Nakadome.
Further, in this configuration, since the opening (movement guide portion) 55 is formed in the upper plate portion 53 of the housing case 50 that houses the locking unit 42, the locking member 41 is moved to a position that is disengaged from the front cover 11. The number of parts can be reduced and the upper band connecting unit 40 can be made thinner as compared with the case where a separate moving guide is provided. In this case, since the opening 55 is hidden in the front cover 11, it is possible to have a simple appearance similar to that of the conventional middle end.

(Second Embodiment)
FIG. 11 is a view showing a state in which the upper band connecting unit 40 according to the second embodiment is incorporated in the guide cover 20. In this embodiment, the inclination angle θ1 of the first inclined surface 55B of the opening 55 is set larger than the inclination angle θ2 of the second inclined surface 55C. More specifically, the inclination angle θ1 of the first inclined surface 55B is set to 45 degrees or more and less than 90 degrees, and the inclination angle θ2 of the second inclined surface 55C is set to less than 45 degrees. In addition, since the structure of those other than this is as substantially the same as the wristwatch 1 concerning 1st Embodiment, detailed description is abbreviate | omitted.

Conventionally, when the wristwatch 1 is worn on the arm, there is a case where a pulling force acts on the band 5 because the band 5 is caught by an obstacle.
In the present embodiment, when the band 5 (upper band 5A) is pulled, the first inclined surface 55B of the opening 55 that moves the locking member 41 to a position away from the front cover 11 is used as the band 5 (upper band 5A). When the button is pressed, the locking member 41 is steeper than the second inclined surface 55C of the opening 55 that moves the locking member 41 to a position disengaged from the front cover 11. Therefore, the operation when pulling the band 5 to lengthen the band 5 is performed. The force can be made larger than the operating force when the band 5 is pushed to shorten the band 5.
Therefore, when an unintended pulling force acts on the band 5, it is possible to reliably prevent the band length from changing unintentionally.

In addition, in the present embodiment, since the inclination angle θ2 of the second inclined surface 55C is a relatively gentle inclination angle of 45 degrees or less, the operation force when the band 5 is pushed to shorten the band 5 is made relatively small. The operation force when shortening the band length can be further reduced.
Note that the inclination angles θ1 and θ2 may be set so as to have an appropriate operating force within a range where the band length does not change unintentionally. In this case, since the operating force also varies depending on the elastic coefficient of the coil spring 44, it is preferable to set the inclination angles θ1 and θ2 according to the elastic coefficient of the coil spring 44.

(Third embodiment)
FIG. 12 is a view showing a state in which the upper band connecting unit 40 according to the third embodiment is incorporated in the guide cover 20. In this embodiment, the connecting portion 80 between the reference guide surface 55A and the first inclined surface 55B, and the connecting portion 81 between the reference guide surface 55A and the second inclined surface 55C have different tapered shapes. More specifically, as shown in FIG. 13, the curvature R1 of the joint 80 is made smaller than the curvature R2 of the joint 81 (R1 <R2).
In the present embodiment, when the band 5 (upper band 5A) is pulled, the curvature R1 of the connecting portion 80 to which the locking member 41 contacts and moves is changed when the band 5 (upper band 5A) is pressed. Since the curvature R2 of the connecting portion 81 to which the stop member 41 abuts and moves is made smaller, the upright portion 41C of the locking member 41 becomes slightly difficult to move from the reference guide surface 55A to the first inclined surface 55B, and the first inclined surface The pulling force for moving to the surface 55B can be set large.
As a result, when an unintended tensile force acts on the band 5, it is possible to reliably prevent the band length from changing unintentionally.
Further, by making the curvature R2 of the connecting portion 81 relatively large, the rising portion 41C of the locking member 41 can be easily moved from the reference guide surface 55A to the second inclined surface 55C. The operation force when shortening the length can be further reduced.

The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified within the scope of the present invention. For example, in the above embodiment, the case where the opening 55 has a substantially octagonal shape is illustrated, but the present invention is not limited to this. For example, the first inclined surface 55B and the second inclined surface 55C of the opening 55 are formed into other polygonal shapes with gradually different inclination angles, the first inclined surface 55B, the second inclined surface 55C, etc. are formed into arcs. It is possible to widely apply the shape of the surface along.
Moreover, although the said embodiment demonstrated the case where this invention was applied to a three-fold middle end, it can apply widely to other middle ends, such as a two-fold middle end and a double-open middle end.
Furthermore, in the above embodiment, the case where the present invention is applied to a wristwatch has been described. However, the present invention can be widely applied to various belt-like accessories such as a bracelet, a necklace, a belt for clothes, and a belt for portable items such as bags. is there.

It is a figure which shows the external appearance structure of the wristwatch which concerns on embodiment of this invention. It is the figure which expanded the middle dot of the wristwatch. It is the figure which looked at Nakadome from the back side. It is a figure which shows the partial structure of Nakadome. It is a figure which shows the structure of the upper band connection unit of Nakadome. It is a figure which shows the structure of the latching unit of an upper band connection unit. It is sectional drawing of a latching unit. It is a figure which shows the state which integrated the upper band connection unit in the guide cover. a is a figure which shows the state which the latching member of the latching unit latched in the 1st latching hole part of the front cover, and b is a figure which shows the state which the latching member removed from the 1st latching hole part. And c is a view showing a state in which the locking member of the locking unit is locked in the second locking hole of the front cover. a is a figure which shows the state which the latching member of the latching unit latched in the 2nd latching hole part of the front cover, and b is a figure which shows the state which the latching member removed from the 2nd latching hole part. And c is a view showing a state in which the locking member is locked in the first locking hole portion of the front cover. It is a figure which shows the state which incorporated the upper band connection unit concerning 2nd Embodiment in the guide cover. It is a figure which shows the state which incorporated the upper band connection unit concerning 3rd Embodiment in the guide cover. It is a figure which shows the opening part of an upper band connection unit with a periphery structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wristwatch, 3 ... Watch body, 5 ... Band (band-like body), 5A ... Upper band, 5A1 ... Frame, 5A2 ... Connecting piece, 5B ... Lower band, 10 ... Nakadome, 11 ... Front cover, 13 ... Middle plate , 15 ... lower plate, 15A ... hook, 19A ... first locking hole (locked portion), 19B ... second locking hole (locked portion), 20 ... guide cover, 23 ... long hole portion , 30 ... button unit, 31 ... push button, 40 ... upper band connecting unit (first connecting body), 41 ... locking member, 41A ... locking member main body, 41B ... tip end, 41C ... upright part, 41D ... notch Part, 42 ... locking unit, 43 ... unit frame, 44 ... coil spring (biasing member), 50 ... housing case, 55 ... opening (movement guide part), 55A ... reference guide surface, 55B ... first inclined surface , 55C ... second inclined surface, 55D ... first regulating surface, 55E ... second regulating surface, 6 ... connecting pieces, 80 and 81 ... connecting portion, .theta.1, .theta.2 ... inclination angle, R1, R2 ... curvature.

Claims (9)

A first connected body to which one of the pair of belt-like bodies is connected; and a second connected body to which the other belt-like body is connected;
The second connector is provided with a plurality of locked portions at intervals in the length direction of the strip.
The first linking body includes a locking member that is locked to any of the plurality of locked portions, a biasing member that biases the locking member to a side that is locked to the locked portion, The one band-like body is connected, and when an external force is applied in the length direction of the band-like body, the main body includes a connecting body that is relatively movable with respect to the locking member,
The intermediate body having a movement guide portion that moves the locking member to a position that is disengaged from the locked portion when the coupling body moves relative to the locking member.   2. The saddle according to claim 1, wherein the movement guide portion has an inclined surface that contacts the locking member and guides the locking member to a position away from the locked portion.   The inclined surface is configured to guide the locking member to a position where the locking member is disengaged from the locked portion when the coupling body moves in a direction in which the pair of belt-shaped bodies are separated from the locking member. A second slope that guides the locking member to a position that is disengaged from the locked portion when the inclined surface and the connecting body main body are moved in a direction in which the pair of band-shaped bodies are moved closer to the locking member. The middle terminal according to claim 2, further comprising a surface.   The middle stay according to claim 3, wherein the first inclined surface is steeper than the second inclined surface. A reference guide surface that is provided between the first inclined surface and the second inclined surface and guides the locking member to a position where the locking member can be locked to the locked portion;
4. The Nakadome according to claim 3, wherein a curvature of a connecting portion between the reference guide surface and the first inclined surface is smaller than a curvature of a connecting portion between the reference guide surface and the second inclined surface. . The movement guide portion has an opening formed in the first connector.
The locking member rises from a locking member main body extending in the width direction of the belt-like body, is positioned in the opening, and has a raised portion that abuts against the inner wall surface of the opening by the biasing force of the biasing member. The inner stay according to any one of claims 2 to 5, wherein an inner wall surface of the opening has the inclined surface.   The second linking body includes a front cover provided with the plurality of locked portions, and a guide cover that is disposed inside the front cover and holds the locking member movably in the length direction of the belt-like body. The middle stay according to any one of claims 1 to 6, characterized by comprising: In a strip-shaped accessory equipped with a middle ring that connects a pair of strip-shaped bodies,
The middle ring includes a first connected body to which one belt-like body is connected, and a second connected body to which the other belt-like body is connected,
The second connector is provided with a plurality of locked portions at intervals in the length direction of the strip.
The first linking body includes a locking member that is locked to any of the plurality of locked portions, a biasing member that biases the locking member to a side that is locked to the locked portion, The one band-like body is connected, and when an external force is applied in the length direction of the band-like body, the main body includes a connecting body that is relatively movable with respect to the locking member,
The band-shaped accessory according to claim 1, wherein the connecting body includes a movement guide portion that moves the locking member to a position that is disengaged from the locked portion when the coupling body moves relative to the locking member. In a timepiece comprising a timepiece main body, a pair of band-like bodies connected to the timepiece main body, and a clasp connecting the pair of band-like bodies,
The middle ring includes a first connection body connected to one belt-like body, and a second connection body connected to the other belt-like body,
The second connector is provided with a plurality of locked portions at intervals in the length direction of the strip.
The first linking body includes a locking member that is locked to any of the plurality of locked portions, a biasing member that biases the locking member to a side that is locked to the locked portion, The one band-like body is connected, and when an external force is applied in the length direction of the band-like body, the main body includes a connecting body that is relatively movable with respect to the locking member,
The timepiece according to claim 1, wherein the connecting body has a movement guide portion that moves the locking member to a position disengaged from the locked portion when moved relative to the locking member.

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