JPH11164712A - Buckle for watch band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the safety when a buckle is opened unintentionally or an opening force acts, to ensure the strapping and unstrapping properties of a watch and to reduce the complexity of the structure thereof. SOLUTION: This buckle for watch band has a folding-in-two means 10 to be attached to a first band 1 and a second band 2 and is constituted by a rear side member 11 in which the folding-in-two means 10 is arranged on a rear side, a front side member 12 in which the folding-in-two means 10 is arranged on a front side, and a main pin 13 connecting them rotatably. The technique for forming the rear side member 11 and an engaging part in a condition in which these are overlapped on the rear side member 11 is adopted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buckle for a watch band, and more particularly to the prevention of a failure due to an accidental reverse rotation of a two-folded portion.

[0002]

2. Description of the Related Art In connection with the technology of a buckle for a watch band having two folded portions, a technical example 1: Japanese Patent Application Laid-Open No. 7-2893.
No. 16, Technical Example 2: JP-A-8-56708, and Technical Example 3: JP-A-9-56422. In these techniques, it is required that the two-folded portion can be opened to an angle of, for example, about 180 to 270 degrees in order to improve the wearability on the wrist.

[0003]

However, if the forked part is forcibly opened to an angle beyond the limit or a careless opening force is applied, the hinge of the forked part is damaged. It can happen.

[0004] The present invention has been made in view of these circumstances, and has the following objects. Improve safety when the buckle is opened carelessly or when the opening force is applied. Ensure the detachability of the watch. To reduce the complexity of the structure. Achieving a compact buckle.

[0005]

In a buckle for a watch band arranged in a connected state between ends of a pair of bands, the buckle has two folding means attached to the first band and the second band. The two-folding means is composed of a back member disposed on the back side, a front member disposed on the front side, and a main pin for rotatably connecting these members. A technique of forming an engaging portion to be brought into a combined state is adopted. The engagement portion is configured by a combination of a slit and an insertion portion inserted into the slit. An upper cover for connecting the second band 2 is provided on the front member, and a safety cover for suppressing opening of the upper cover is provided on the back member so as to be openable and closable. The rear member and the safety lid are provided with locking means for preventing the safety lid from being opened. The locking means includes a locking piece disposed on the back side member so as to protrude to the front side, and an engaging pin detachably attached to the locking piece and disposed on the safety lid so as to protrude on the back side. Is adopted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a buckle for a watch band according to the present invention will be described below with reference to FIGS.

In these figures, reference numeral 1 denotes a first band, 2 denotes a second band, X denotes a buckle for a watch band, 1
0 is two folding means, 11 is a back member, 12 is a front member,
13 is a main pin, 14 is an upper lid, 15 is a safety lid, 16 is locking means, and R is an engaging portion.

The first band 1 and the second band 2
In order to attach the watch to the wrist, a watch band buckle X is arranged in a connected state between these ends as shown by a chain line in FIGS. A loop is formed.

Then, the buckle X for the watch band is attached to the two-folding means 10 by the upper lid 14, the safety lid 15, and the locking means 16.
And the engaging portion R and the like.

As shown in FIGS. 1 to 3, the double folding means 10 includes a back member 11 arranged on the back side.
And a front member 12 arranged on the front side, and a main pin 13 for rotatably connecting these members. The first band 1 is rotatable by a connection pin 17 on the distal end side of the back member 11. At the same time, the second band 2 is attached to the front end of the front member 12 with the upper cover 14 interposed therebetween.

The back side member 11 is formed by a technique of pressing a stainless steel plate or the like, and as shown in FIG. 5 and the like, a pair of connection side plates 11a formed in a cut-and-raised state at a tip end thereof, and A connection hole 11b opened at the end of the connection side plate 11a to insert the connection pin 17 to connect to the first band 1, and a main pin 13 arranged at the rear end to be connected to the front member 12 Fold 1 for connection
1c and a slit 11 forming a part of the above-mentioned engaging portion R formed in a state of being cut out from the rear end to the middle.
d.

The front side member 12 is formed by a technique of pressing a stainless steel plate or the like, is disposed in an intervening state between the back side member 11 and the upper lid 14, and has a rear end portion as shown in FIG. Slit 1 of the back side member 11
1d, the insertion portion 12a, which is formed to have a reduced width so as to be inserted into the engagement portion R, and constitutes another portion of the engagement portion R,
8 and the connecting folds 12b and 12c for rotatably connecting via the main pin 13 and a through hole for projecting the locking means 16 to the rear surface position of the front safety lid 15 when closed. It has a hole 12d.

As shown in FIGS. 1, 2 and 7, the upper lid 14 has an adjusting hole 14a for attaching the second band 2 through an adjusting pin 19 such as a "spring" bar, and a tip end portion. A connecting turn-up portion 14b arranged to be rotatably connected via a connecting pin 18 and a slit 14 formed so as to be cut out from the front end to the middle and into which the safety lid 15 is inserted.
c and the safety cover 1 arranged in a state facing the slit 14c.
And a concave portion 14d for accommodating the front end portion 5 and reducing the amount of protrusion to the upper surface.

As shown in FIGS. 3 and 8, the safety cover 15 is provided on the connecting folded portion 12 b of the front side member 12 so as to cover the upper cover 1.
4 is rotatably supported by a common connecting pin 18 and covers the upper cover 14 shown in FIG. 1 to suppress the “open” operation of the upper cover 14, and an upper cover 14 described later with reference to FIG. 11.
And a knob 15a for performing an opening and closing operation, a locking hole 15b provided on the back side of the knob 15a, and a first opening when the closing operation is performed. And a projection 15c for positioning by contacting the tip of the band 1.

As shown in FIGS. 3 and 11, the locking means 16 is interposed between the back member 11 and the safety lid 15 to prevent the safety lid 15 from being opened carelessly. A locking piece 16a integrated with the back side member 11 and protruding to the front side; an engaging pin 16b detachably attached to the locking piece 16a and supported by a locking hole 15b of the safety lid 15; Recess 16 formed in stop piece 16a and engaged with locking hole 15b
c and an inclined portion 16d for guiding the engaging pin 16b to the locking hole 15b.

The locking piece 16a of the locking means 16
Are formed by cutting and raising a part of the back side member 11 and the like.
And the extension direction of the tip of the locking piece 16a is outside the tangent direction of the arc of the front side member 12 that rotates about the main pin 13. It is set as follows.

The operation of attaching and detaching the buckle X for a watch band configured as described above will be described below.

The attachment / detachment of the watch, that is, the removal of the buckle X for the watch band, is performed by opening and closing the upper cover 14 and the safety cover 15. As shown in FIG. 1, when the upper lid 14 and the safety lid 15 are closed, the rotation of the two folding means 10 and the upper lid 14 about the main pin 13 as the center of rotation is pressed by the safety lid 15, As shown in FIG. 3, the locking piece 16a is more than the tangential direction of the aforementioned arc.
Is extended outward, the contact between the engaging pin 16b of the locking means 16 and the locking piece 16a is deepened during the rotational movement, and the opening operation of the two-folding means 10 is suppressed.

When the safety lid 15 is closed,
As shown in FIG. 3, the safety lid 15 is housed in the recess 14d of the upper lid 14 and has no projecting portion.
The function of locking the locking of the safety lid 15 by engaging the recess 6b with the recess 16c prevents the safety lid 15 from being opened carelessly.

When opening the buckle X for the watch band,
From the state shown in FIG. 1, when the user puts his / her finger into the concave portion 14d of the upper lid 14 and raises the safety lid 15, the engaging pin 16b of the locking means 16 is disengaged from the concave portion 16c, and the safety lid 15 is moved to the position shown in FIG. Then, the two-folding means 10 can be opened by an arbitrary angle by lifting the upper lid 14 as shown by a chain line. In a normal case, by opening the two-folding means 10 by about 180 degrees, the loop size becomes large, and an operation such as removing the watch from the wrist becomes possible.

However, in the buckle X for a watch band described here, as shown in FIG. 2, the insertion portion 12a can be inserted into the slit 11d of the engagement portion R from both the front and back. In addition, the folding means 10 can be opened to an arbitrary angle, for example, as shown in FIG. 10, the front side member 12 can be opened to a position close to 360 degrees to the back side of the back side member 11. Therefore, even if the folding means 10 is opened more than necessary, no trouble occurs.

When the watch is worn on the wrist, the safety cover 15
Is carried out by closing the two-folding means 10 in a state in which is opened. With the safety lid 15 closed, the two-fold means 1
When trying to fold 0, as shown in FIG.
Although the engaging pin 16b hits the tip of the locking piece 16a and pushes down the safety lid 15, it does not move.
(B) As shown in FIG.
When the upper lid 14 and the front side member 12 are pressed down while keeping the 6a and the engaging pin 16b in contact with each other, the safety lid 15 is forcibly opened, and when the two-folding means 10 is further operated in the closing direction, FIG. c) As shown in FIG.
1 and the front side member 12 come into contact with each other, and then, when the safety lid 15 is pushed down, as shown in FIG. 11 (d), the engaging pin 16b engages with the concave portion 16c to return to the initial holding state. Return.

In the portion of the locking means 16, the engaging pin 16b engages or disengages with the concave portion 16c while elastically deforming the locking piece 16a by a small amount during its movement. Therefore, a click feeling is generated at the time of operation, and it is clear whether the state is the locked state or the unlocked state, or the boundary thereof.

[Other Embodiments] In the above-described first embodiment, the structure shown in FIGS. 3 and 11 is employed for the locking means 16.
However, this does not preclude the adoption of the push button unit shown in FIG.

[0025]

According to the buckle for a watch band according to the present invention, the following effects can be obtained. (1) Since the back member and the back member are formed with an engaging portion in which these are overlapped with each other, if the buckle is opened carelessly or an opening force is applied, it is impossible. Power is not generated, and the overall safety can be improved. (2) The detachability of the timepiece can be ensured by the opening / closing operation of the safety lid and the two-folding means and the optional opening angle. (3) The structure can be simplified because the engaging portion is constituted by a combination of the slit and the insertion portion. (4) By adopting the structure in which the locking means is incorporated in the safety lid portion, the buckle portion can be made compact and the increase in cost can be suppressed.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a buckle for a watch band according to the present invention.

FIG. 2 is a plan view and a plan sectional view showing a first embodiment of a buckle for a watch band according to the present invention, which is divided into halves.

FIG. 3 is a front sectional view showing a first embodiment of a buckle for a watch band according to the present invention.

FIG. 4 is a side view and a side sectional view showing the first embodiment of the buckle for a watch band according to the present invention, which is divided into halves.

FIG. 5 shows a part of a back side member in FIG. 1;
(A) is a plan view, (b) is a front sectional view, (c) is a front view,
(D) is a left side view and a right side view that are shown in half.

6 shows a part of a front side member in FIG. 1,
(A) is a plan view and (b) is a front view.

FIG. 7 shows a portion of an upper lid in FIG. 1,
(A) is a front view, (b) is a plan view, and (c) is a side view.

FIG. 8 shows a part of the safety lid in FIG. 1,
(A) is a front view, (b) is a plan view, and (c) is a side view.

FIG. 9 shows the structure of each pin in FIG. 1,
(A) is a plan view of a coupling pin, (b) is a plan view of an engagement pin, and (c) is a plan view of a main pin.

FIG. 10 is a front view showing the opening / closing state of the watch band buckle in FIG. 1;

11 (a) to (d) show the states of the safety lid and the locking means when opening and closing the buckle for the watch band in FIG.
FIG.

[Explanation of symbols]

 X Buckle for watch band 1 First band 2 Second band 10 Two folding means 11 Back side member 11a Connection side plate 11b Connection hole 11c Connection return portion 11d Slit 12 Front member 12a Insertion portion 12b, 12c Connection return portion 12d Through-hole 13 Main pin 14 Upper lid 14a Adjusting hole 14b Folding part for connection 14c Slit 14d Depression 15 Safety lid 15a Knob part 15b Locking hole 15c Projection 16 Locking means 16a Locking piece 16b Engagement pin 16c Depression 16d Slope Part 17 Connection pin 18 Coupling pin 19 Adjustment pin R Engagement part

Claims (5)

[Claims] 1. A buckle for a watch band arranged between two ends of a pair of bands in a connected state, wherein the buckle is attached to a first band (1) and a second band (2). (10), wherein the two-folding means includes a back member (11) disposed on the back side and a front member (1) disposed on the front side.
2) and a main pin (13) for rotatably connecting them, and an engagement portion (R) for overlapping them is formed on the back member and the back member. Features a buckle for watch bands. 2. An engaging portion (R) having a slit (11d).
The buckle for a watch band according to claim 1, further comprising an insertion portion (12a) inserted into the slit. 3. An upper cover (14) for connecting the second band (2) to the front member (12), and a safety cover (11) for suppressing opening of the upper cover on the back member (11). The buckle for a watch band according to claim 1 or 2, wherein the buckle (15) is arranged to be openable and closable. 4. The buckle for a watch band according to claim 3, wherein the back member (11) and the safety cover (15) are provided with locking means (16) for preventing the safety cover from being opened. 5. The locking means (16) comprises a back member (11).
Locking piece (16a) arranged so as to protrude to the front side with respect to
The buckle for a watch band according to claim 4, further comprising an engaging pin (16b) attached to and detached from the locking piece and disposed on the safety lid (15) so as to protrude rearward.