JPH105015A - Middle stopper for strap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stopper for a strap with which one locking instrument can be surely fixed with the other locking instrument, one locking instrument can be surely fixed with a safety cover and they can be detached by simple operation. SOLUTION: This stopper is provided with one and another locking instruments 3 respectively mounted at one end and another end of a strap 2, safety cover 5 pivotally attached at the other end of the band 2 so a to be combined on the surface of one locking instrument 3, 1st engage means for engaging one and other lock instruments 3 and 4, 1st push button 12 for disengaging them, 2nd engage means for engaging one locking instrument 3 and the safety cover 5, and 2nd push button 12a for disengaging them. When the safety cover 5 is combined on the surface of one locking instrument 3, it regulates the pressure of the 1st push button 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a wristwatch band,
The present invention relates to the clasp of a band suitable for ornaments such as bracelets.

[0002]

2. Description of the Related Art A locking member is fixed to one end of a band, and a stopper body containing a movable locking member capable of locking with the locking member is attached to the other end of the band. A push button for releasing the engagement of the movable locking member with the stopper body is provided on the stopper body, and the frame body is rotatably mounted outside the stopper body so that the push button cannot be pressed when the frame body is tilted. Nakadome of the band was published in Japanese Utility Model Publication No. Sho 61-42406 and Japanese Utility Model Publication No. Sho 61-42405,
No. 10 discloses this.

According to these clasps, the depression of the push button is restricted by tilting the frame, thereby preventing the locking member and the movable locking member from separating and the band from falling off. it can. However, since the frame must be manually raised when removing the band, the operation is troublesome, and it is not very meaningful to be able to release the engagement between the locking member and the movable locking member with one touch. Further, since the frame is not locked on the side of the locking stopper, there is a possibility that the frame may rotate due to vibration or the like during use and the restriction on the push button may be lost.

[0004]

SUMMARY OF THE INVENTION According to the present invention, one locking tool and the other locking tool, and one locking tool and the safety cover can be securely fixed, and can be easily removed by a simple operation. The purpose is to provide a buckle that can do the band.

[0005]

According to the present invention, a clasp of a band is provided with one locking member having a band mounting portion, the other locking member having a band mounting portion, and the other locking member. A safety cover that is movably mounted and that can be polymerized on the surface of the one locking device when the one locking device is locked to the other locking device; A first engaging means provided on and engaged with the first engaging means, and a first engaging means provided on the one engaging means for releasing the engagement of the first engaging means by a pressing operation. A push button, provided on the one locking tool and the other locking tool,
In a state where the safety cover is superimposed on the surface of one of the locking members, a second engaging means for engaging the one locking member and the safety cover, and a second engaging means by pressing operation. A second push button provided on the one locking device for releasing the engagement, wherein the safety cover is fitted with the first push button when the safety cover is superimposed on the surface of the one locking device. It has a recess that fits.

[0006] One locking tool, the other locking tool, the safety cover, and the one locking tool are individually and reliably engaged via the first engaging means and the second engaging means. . The movement of the first push button is regulated by overlapping the safety cover on the surface of one of the locking members locked by the other locking member, and the one locking member and the other locking member are moved. Prevent unexpected withdrawal. By pressing the first push button and the second push button, the engagement between one of the locking members and the other locking member and between the safety cover and one of the locking members can be easily released with one touch. You.

When the safety cover is urged away from the surface of one of the locking tools locked by the other locking tool, the safety cover can be released only by disengaging the second engaging means. The cover is pushed up from the surface of one of the fasteners,
This is desirable because regulation of the first push button can be released.

[0008] The other end of the band is pivotally attached at the opposite end of the band mounting portion to the back surface of the one end of the band, and is foldable at an intermediate portion. Since the ends are connected to each other, it is desirable to prevent an accident of band drop.

The first and second engaging means are disposed within one of the locking members so as to be close to and separated from each other, and a pair of locking pieces urged in the approach direction, and the pair of locking members. The safety cover and the engagement protrusions provided on the safety cover, which are inserted and removed between the pieces and are engaged with the pair of engagement pieces in the approaching state, respectively. It is desirable that the first and second engaging means can be engaged simply by pressing the stopper and the other stopper in an overlapping manner.

[0010] An engagement projection of the first engagement means is provided on the surface of the other engagement tool, and an opening for inserting the engagement projection of the first engagement means is provided on the back surface of the one engagement tool. , Formed so as to face between the pair of locking pieces of the first engaging means, the engaging projection of the second engaging means is provided on the back surface of the safety cover, and the engaging of the second engaging means is performed. An opening into which the projection is inserted may be formed on the surface of one of the locking members so as to reach between the pair of locking pieces of the second engaging means.

It is desirable to form a groove on the surface of one of the locking members, into which the safety cover is fitted, because the surface of the clasp becomes smooth, the appearance is clear, and the thickness is reduced.

[0012]

1 to 4 show a clasp 1 of a three-fold wristwatch band. The clasp 1 of the band is made of a metal such as stainless steel, aluminum alloy, titanium, or titanium alloy.
And a second locking member 4 attached to the other end of the band 2, and a frame-shaped safety cover 5 rotatably attached to the other end of the band 2 and straddling the band 2.

As shown in FIG. 2, one of the locking members 3 is formed in a cover shape which is curved to have a convex surface on the longitudinal direction. As shown in FIGS. 4 and 7, a convex portion 6 is integrally formed on the back surface of the intermediate portion in the longitudinal direction of one of the locking members 3, and a band insertion concave portion 7 is formed on one side in the longitudinal direction of the convex portion 6. Is formed, and a pin fitting recess 8 is formed on the other side in the longitudinal direction.
Also, on both side walls of one of the locking members 3, a band insertion recess 7 is provided.
Through hole 9 for inserting a mounting pin (not shown) for axially attaching one end of the band 2 to one of the locking members 3.
Are formed as a band mounting portion.

As shown in FIG. 3, a groove 10 into which the safety cover 5 is fitted is formed on the surface of the locking member 3. The groove 10 has a planar shape that is convexly curved in one longitudinal direction. As shown in FIG. 4, a support 17a having a hollow tube 17 protruding from the concave portion 6a is provided in the concave portion 6a formed at the center of the back surface of the convex portion 6 along the width direction. 17b.

As shown in FIG. 1 and FIG. 3, a pair of locking pieces 11, 11 slidable along the width direction, respectively, are built in the other side in the longitudinal direction of the convex portion 6. As shown in FIG.
The outer ends of the locking pieces 11, 11 protrude outward from the convex portions 6 to form first push buttons 12. Locking piece 1
The inner ends of the first and the first members 11 are formed to be narrower, and extend through the center in the width direction so that the pair of locking pieces 11 and 11 pass each other. Thus, the engaging portions 13 are formed. The left and right engaging portions 13 are opposed to each other with a slight space therebetween, and the surface of the facing edge is cut out to form a step portion 14, and the opposite side of the step portion 14 is an inclined surface.

At the side edges of the left and right locking pieces 11, 11,
Engaging step portions 26 are formed at the tip of the engaging portion 13 of the opposing engaging piece 11 and the push button 12, respectively. Also,
The coil spring 15 is interposed between the engaging step 26 formed on the push button 12 of the one engaging piece 11 and the engaging step 26 formed on the tip of the engaging part 13 of the other engaging piece 11. You. The coil spring 15 urges the engaging portions 13 on both sides toward the center in the width direction, that is, in the direction approaching each other, and at the same time, the first push button 1
2 is urged to protrude from the convex portion 6. Further, a recess 27 is formed on the side edge of the left and right locking pieces 11, 11 opposite to the engagement step 26, and a stopper screw 28 fixed to the convex portion 6 is engaged with the recess 27. You. The stopper screw 28 normally contacts the edge of the recess 27 near the engaging portion 13.

When the first push button 12 is pressed, the coil spring 15 is compressed and the left and right engaging portions 13 are moved away, but the edge of the concave portion 27 near the push button 12 comes into contact with the stopper screw 28. Further movement is restricted at the position. Also, the first push button 12
Is released, the locking piece 1 is actuated by the urging force of the coil spring 15.
1, 1 and 11 return to the original position, and the left and right engaging portions 13 approach again. Further, as shown in FIG. 4, an opening 16 is formed on the rear surface of the convex portion 6 at a position facing between the left and right engaging portions 13.

As shown in FIGS. 1 and 3, a pair of locking pieces 11a, 11a having substantially the same structure as the locking pieces 11, 11 are also built in one side in the longitudinal direction sandwiching the concave portion 6a of the convex portion 6. Is done. The outer ends of the locking pieces 11a, 11a protrude outward from the convex portion 6 to form a second push button 12a.
The engaging portions 13a of the locking pieces 11a, 11a are notched on the back side to form stepped portions 14a, and the left and right engaging portions 13a are formed.
An opening 16a facing the gap is formed at the bottom of the groove 10 on the surface of the convex portion 6.

As shown in FIGS. 3 and 4, the other locking member 4 has an outer frame 18 attached to the other end of the band 2 and a middle plate 19 pivotally attached to the back surface of the one locking member 3. And The outer frame 18 is curved in a convex shape on the surface along the longitudinal direction, and mounting pin support legs 20 are provided on both sides of one end in the longitudinal direction. Further, a notch groove 21 into which the middle plate 19 is fitted is formed from the other end in the longitudinal direction of the outer frame 18 to one end thereof.

On the surface of one end in the longitudinal direction of the outer frame 18, an engagement projection 22 having a large diameter at the tip is formed. This engagement projection 22
Are a pair of locking pieces 11, 1 built in one locking tool 3.
1 together with the first engaging means.

The middle plate 19 is curved with the same curvature as the outer frame 18, and is included in the same curved surface as the outer frame 18 when fitted in the notch 21. One end of the middle plate 19 is inserted into the tip of the cutout groove 21 and is rotatably connected to the other end of the outer frame 18 via a pin 23. Further, the concave groove formed at the other end of the middle plate 19 is fitted to the hollow tube 17,
The intermediate plate 19 is inserted through a pin 23 ′ inserted into the hollow tube 17.
Is rotatably joined to the back surface of one of the locking members 3. Therefore, one of the locking members 3, the middle plate 19 and the outer frame 18 are
One of the locking members 3 can be folded in a three-fold shape with the frontmost position. Note that one of the locking members 3, the middle plate 19 and the outer frame 1
When the folding member 8 is folded, the engagement protrusion 22 of the outer frame 18 faces the opening 16 formed on the back surface of one of the locking members 3.

The safety cover 5 has left and right side walls 24 whose base ends are mounted outside the mounting pin support legs 20 of the outer frame 18, and a bridge portion 25 which is bridged between the front ends of the side walls 24.
Having. Then, the mounting pin 30 serving as a band mounting portion is inserted into the tip of the side wall 24 and the mounting pin support leg 20, and the safety cover 5 is rotatably mounted on the outer frame 18. A coil spring 31 is attached to both ends of the mounting pin 30, one end of which is fixed to the mounting pin support leg 20 and the other end of which is fixed to the side wall 24. The coil spring 31 moves the safety cover 5 away from the outer frame 18. Has been energized.

As shown in FIG. 2, a recess 29 is formed in the lower portion of the side wall 24. The recess 29 fits with the first push button 12 when the bridge portion 25 of the safety cover 5 is fitted into the groove 10 of one of the locking members 3. When the concave portion 29 is fitted to the first push button 12, the first push button 12 cannot be moved into the convex portion 6 by a finger pad due to the thickness of the side wall 24.

As shown in FIG. 4, an engagement projection 22a having a large diameter is formed on the back surface of the top of the bridge portion 25. The engagement protrusion 22a forms a second engagement means together with the other pair of engagement pieces 11a, 11a built in one engagement tool 3. When the safety cover 5 is put on the surface of the locking member 3, the engagement protrusion 22 a faces the opening 16 a formed on the surface of the locking member 3.

The middle clasp 1 of the band is used as follows. One end of the band 2 is inserted into the band insertion recess 7 of one of the locking members 3, and a mounting pin (not shown) is inserted into one end of the band 2 and the through hole 9 so that the one of the locking members 3 is connected to one end of the band 2. To be rotatable. Also, band 2
Is inserted between the attachment pin support legs 20 of the outer frame 18 and attached by the attachment pins 30.

When the middle clasp 1 of the band is to be locked, as shown in FIGS. 1 and 2, the other locking member 4 is folded and the middle plate 19 is fitted into the notch groove 21 of the outer frame 18, The other fastener 4 that has been folded is placed on the back surface of the one fastener 3 so that the fastener 1 is folded in three. In the folded state, the mounting pin support leg 20 of the outer frame 18, the inside of the base end of the side wall 24, and the mounting pin 30 are fitted into the pin fitting recess 8 of one of the locking members 3.

When one of the locking members 3 is pressed to the back side, the engaging projection 22 of the outer frame 18 is inserted into the opening 16 as shown in FIG. The opposing engaging portions 13 are pushed apart and enter below. When the largest diameter portion of the engagement protrusion 22 passes through the most protruding portion of the engagement portion 13, the locking pieces 11, 11
The elastic member 5 returns to the original position, and the tip of the engaging projection 22 engages with the step portion 14. As a result, the engagement protrusion 22
One of the locking members 3 and the other of the locking members 4 are engaged with each other via first engaging means constituted by the locking pieces 11 and 11.

Next, the safety cover 5 is folded over the surface of one of the locking members 3, and the bridge portion 25 is
In the groove 10. Further, when the safety cover 5 is pressed to the back side, the engaging protrusion 22a is inserted into the opening 16a, and is constituted by the engaging protrusion 22a and the locking pieces 11a, 11a, similarly to the first engaging means. The second engagement means is engaged, and one of the locking members 3 and the safety cover 5 are locked. Also, in this state, the recess 29 is fitted so as to surround the first push button 12, so that even when the side surface of the stopper 1 hits an object, the first push button 12 is in the convex shape. 6, and there is no fear that the engagement between the one locking tool 3 and the other locking tool 4 is released.

The clasp 1 of the band can be removed as follows. First, when the second push button 12a is pressed by a finger and moves toward the inside of the convex portion 6, the locking piece 11
The engaging portions 13a, 13a of a, 11a move away. Then, the engaging projection 22a becomes free, the second engaging means is released, and the spring 31 attached to the mounting pin 30 causes the safety cover 5 to jump up. When the safety cover 5 is opened, the first push button 12 fitted in the recess 29 is exposed. Next, the first push button 12 is depressed to release the first engaging means in the same manner as the second engaging means, and one locking tool 3 is raised from the other locking tool 4.

The center clasp of the band of the present invention may not be of the three-fold type, but may be of a type in which one locking tool and the other locking tool are separated. Further, the band locked by the clasp of the present invention is not limited to wristwatches, but can also be used for accessories such as bracelets.

[0031]

According to the first aspect of the present invention, one of the locking tools and the other locking tool, and the safety cover and the one locking tool are securely engaged with each other individually. high. Further, when the safety cover is superposed on the surface of one of the locking members, the first push button does not move in the direction in which the engagement is released, so that the clasp may hit an object during use. However, there is no fear that the clasp will come off suddenly and the band will fall. Further, by pressing the first push button and the second push button, the engagement of one of the locking members with the other locking member and the safety cover with the one of the locking members can be easily performed with one touch. It is possible to cancel.

According to the second aspect of the present invention, when the second push button is pushed and the second engagement means is disengaged, the safety cover is automatically flipped up and the regulation of the first push button is released. The clasp can be easily removed.

According to the third aspect of the present invention, since the ends of the band are connected even when the clasp is removed, the band can be prevented from dropping.

According to the fourth aspect of the present invention, the first and second engaging means can be easily engaged simply by overlapping and pressing the safety cover, the one engaging member and the other engaging member. it can.

According to the sixth aspect of the invention, when the clasp is locked, the appearance is clear and the thickness is reduced without forming irregularities on the surface. Easy to use without getting in the way.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention when a clasp of a band is locked.

FIG. 2 is a side view of the above.

FIG. 3 is a surface view of a clasp of a band disengaged.

FIG. 4 is a back view of the above.

FIG. 5 is a front view of the first and second engaging means.

FIG. 6 is a side view of a main part of the above.

FIG. 7 is an end view of one locking device.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 band middle clasp 2 band 3 one locking device 4 the other locking device 5 safety cover 6 convex portion 7 band fitting concave portion 8 pin fitting concave portion 9 through hole (band mounting portion) 10 groove 11, 11 a Stop piece 12 First push button 12a Second push button 13, 13a Engagement part 14, 14a Step part 15 Coil spring 16, 16a Opening 17 Hollow tube 18 Outer frame 19 Middle plate 20 Pin support leg 21 Notch groove 22 , 22a Engagement projection 23, 23 'Pin 24 Side wall 25 Bridge 26 Engagement step 27 Depression 28 Stopper screw 29 Recess 30 Mounting pin (band mounting part) 31 Coil spring

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Koji Shima, Inventor 6-1-12 Honcho, Tanashi-shi, Tokyo Inside the Citizen Watch Co., Ltd. Tanashi Factory

Claims (6)

[Claims] 1. One locking device having a band mounting portion,
The other locking tool having a band mounting portion, and the other locking tool is rotatably attached to the other locking tool, and the one locking member is locked when the one locking tool is locked to the other locking tool. A safety cover that can be polymerized on the surface of the stopper, a first engaging means provided on the one locking member and the other locking member to engage them, and a first engagement by pressing operation. A first push button provided on the one locking device for releasing the engagement of the means, and a first push button provided on the one locking device and the other locking device, wherein the safety cover is provided on the one locking device. Second engagement means for engaging the one of the locking members and the safety cover in a state of being superposed on the surface of the first member, and the one engagement means for releasing the engagement of the second engagement means by a pressing operation. A second push button provided on a stopper, and wherein the safety cover includes the second push button. When polymerized to the surface of the square of the locking tool, clasp band first pushbutton is characterized by having a recess to be fitted. 2. The safety cover according to claim 1, wherein the safety cover is urged in a direction away from a surface of the one locking tool locked by the other locking tool. Nakadome in the band. 3. The other locking device, wherein the opposite end of the band mounting portion is pivotally attached to the back surface of the one locking device, and is foldable at an intermediate portion. Or the middle clasp of the band described in 2. 4. The first and second engaging means are disposed inside the one of the locking members so as to be close to and separated from each other.
A pair of locking pieces biased in the approaching direction, and a pair of locking pieces provided respectively on the other locking tool and the safety cover, inserted and removed between the pair of locking pieces, and in an approaching state. The clasp of a band according to any one of claims 1 to 3, comprising an engagement projection engaged with the piece. 5. An engagement projection of the first engagement means is provided on a surface of the other engagement tool, and the opening into which the engagement projection of the first engagement means is inserted is the one of the first engagement means. The engagement projection of the second engagement means is provided on the back surface of the safety cover, and is formed on the back surface of the engagement member so as to face between the pair of engagement pieces of the first engagement means. The opening into which the engaging projection of the second engaging means is inserted is formed on the surface of the one engaging tool so as to face between the pair of engaging pieces of the second engaging means. A middle clasp according to claim 4, characterized in that: 6. The clasp of a band according to claim 1, wherein a groove for fitting the safety cover is formed on a surface of the one locking member.