JPH03198804A - Fastening of watchband - Google Patents

Abstract

PURPOSE:To make a fastening compact and facilitate the process by giving it a structure in which a cassette part is arranged aerially in a frame part with operation members protruding from windows of the frame part. CONSTITUTION:Second operation member 8 with a knob 8a is inserted in a cassette part 12, which is placed in a frame part 6, and operation part 8b protrudes from a window 6b of the frame part 6 to the outside of a side panel 6a. While spring 24 is inserted from a window 6e of the frame 6 up to a notch 8c of the second operation member 8, then first operation member 10 is inserted from the window 6e. The heat part of this operation member 10 is a lock fastening part 10a. This part is overlapped the operation part 8b inserted before, and the other side of the spring 24 is pressed against a notch 10c. After the setting is completed in this way, a pin 14 is put through the operation part 10 from the top to engage. Thus, assembly is possible by preparing the width of operation part approximately the same as that of cassette housing part.

Description

[Detailed description of the invention] [Industrial application field] TECHNICAL FIELD The present invention relates to an improvement in a clasp for a watch band.

[Conventional technology and its issues]

To remove the conventional clasp, you need to use your fingernail or fingertips to remove it.
Moreover, since the device provided more space for nails and fingertips, there were issues with safety while carrying it.

Therefore, we have proposed several ideas regarding the SN type clasp in Japanese Patent Application No. 59-278189.

In a nutshell, it locks when you flip the clasp normally, and it won't come off unless you press both of the operating members with the same force at the same time, and when you want to release it, you simply press the operating members at the same time. It is a safe and easy-to-use middle clasp that does not require the use of claws or the like that can be removed.

Watch bands come in free adjustment, single lock, and three-fold types, and in addition to differences in the structure of the clasp, the width of the watch band ranges from 6 to 8 mm for women to 20 mm for men. They are made at intervals of 2 mm width. Therefore, when making a clasp, it is necessary to prepare one suitable for each width.

Up until now, since the SN clasp itself is a completely new function, we have been thinking a lot about how to adapt it to each conventional type and what kind of structure it would be compatible with.

In doing so, we have considered a structure that can be mass-produced, but we have found that creating common parts that can be used in the same way for products with different band widths is a major challenge. .

In the case of the traditional clasp type, the outer frame was changed depending on the band width, and the functional parts inside were the same, but in the case of the SN method, the operating parts, etc. There were functional parts, and if the side panels that served as the outer frame were thicker, the window would be deeper, making it difficult to process.

By the way, the SN type clasp has a structure in which the operating parts of both operating members are pressed by an elastic body such as a spring so that their heads protrude from the windows of the opposing side panels, but this method is disclosed in Japanese Patent Application No. 59-2781.
No. 89, Utility Model Application No. 61-076139, etc. all have an operating member 2 on the outside in the width direction of the band, as shown in FIG.
1.26, the portion that goes inside the side plate 22.24 is larger than the operating parts 21a and 23a.

Therefore, the clasp itself has become larger.

In addition, in the case of the type that covers the operating members instead of exposing them, in order to store such members, as shown in FIG. I was thinking of a structure that would be fixed by welding, but in order to take the threaded part and spot welding allowance 27,
Here too, problems arose in that it became too large and that it became difficult to process.

[Means to solve the problem]

In order to solve the above problems, the present invention takes the following measures.

■ The SN type clasp is engaged with a frame portion consisting of two side plates and a connecting portion connecting the both side plates, a cassette portion housing two operating members and an elastic body, both operating members and the cassette portion. The cassette part has a structure in which it is suspended by both operating members passed through windows in the frame part, and the cassette part and the top lid part are combined with outer frames of different widths, that is, side plates. I made it possible.

(2) The width of the operating section of the operating member and the width of the storage opening of the cassette section were made approximately the same.

■ One of the operating members is bent to have a step between the push-up part at the tip and the operating part, and the height of the storage opening is set to the height that the operating member with this step is approximately, and on the other hand, the height of the window on the side plate is By making the thickness approximately the same as that of this operating part, the operating part will not come out to the outside of the side plate, and the other operating member can be attached by providing a through hole or notch in the operating member and using a pin that passes through the cassette part. I made sure that it would not come off to the outside of the side plate.

[Effect]

■ By making the frame part, cassette part, both operating members, and top lid part as separate structures, the same cassette part and top lid part can be used for different frame parts, and these can be used as common parts. It can be mass produced. In addition, as the width of the outer frame increases, the length of the operating part will differ accordingly, but the structure of the locking part and push-up part is the same, so those parts are molded using the same mold. This means that by changing only the frame part, it is possible to create an SN type clasp that corresponds to different bands.

■ I want the control panel to be as wide as the design allows. By doing so, you can press the operation part with your finger lightly.

However, if the operation part is made larger, the overall size of the clasp becomes larger with the conventional structure.

Therefore, we devised a structure in which the width of the operation section and the width of the storage section of the cassette section are made approximately the same so that they can be assembled.

After putting the second operating member into the cassette section first and setting it on the frame section, the operating section is exposed through the window on the side panel, and the elastic body and the first operating member are sequentially inserted through the window on the other side panel. Insert it and drop the pin from above to engage it.

〔Example〕

Hereinafter, embodiments of the clasp according to the present invention will be described in detail based on the drawings.

FIG. 1 is a perspective view showing an embodiment of the middle clasp for a watch band according to the present invention, (a) is a perspective view of the middle clasp when it is released from the connected state, and (b) is a perspective view of the connecting member. Perspective view, (C
1 is a perspective view of one watch band and the other watch band connected by this middle clasp and locked together. The original shape of this clasp is a drawing type.

2 is a fixed locking member, 4 is a movable locking member, and these are connected by a pin 6. 6 is a frame portion, 6a and 6b are side plates, and 6c is a connecting portion. 8 is a push-up portion 8a (third
10 is a locking part 10.
a (FIG. 3). 12 is a cassette part, 14 is a pin, 16 is a hook, 16a is a long part, and 16b is a flip-up part. 18 is a connecting member with the band, and 20 is a pin that pivotally supports the movable locking member 4.

This middle clasp has a fixed locking member 2 connected to one side of the band, and a pin 20 of a connecting member 18 connected to the other side of the band.
A movable locking member 4 is pivotally supported on the other side of the band through the
It consists of.

FIG. 3 is an exploded perspective view showing the components of the clasp shown in FIG. 1, and FIG. 4 is a sectional view.

The second operation member 8 provided with the flip-up portion 8a is constructed by placing the operation portion 8b on the frame portion 6 with the entire second operation member 8 inserted into the cassette portion 12, and then inserting the operation portion 8b into the frame portion B. It is set by protruding through the window 6d and extending the operating portion 8b to the outside of the side plate 6a. On the other hand, the spring 24 is inserted through the window 6e of the frame portion 6 and abuts against the notch 8c of the second operating member 8, and in this state, the first operating member 10 is inserted through the window 6e. The tip of the operating member 10 is a locking part 10a, and this part overlaps the push-up part 8b that has just been inserted, and the spring 2
4 presses against the notch portion 10c. Due to the force of the spring 24, the second operating member 8 is pressed to the outside of the side plate 6a, and the first operating member 10 is pressed to the outside of the side plate 6b. 8d collides with the inside of the side plate 6a, and stops when the operating portion 8b sticks out a certain length. On the other hand, the first operating member 10 is about to protrude from the window 6e, but the pin 14 is inserted through the pin hole 12a of the cassette part 12, and passed through the cutout hole 10d made in the first operating member 10 to the same cassette part 12. The first operating member 10 is press-fitted into a pin hole made on the back side of the holder, so that the operating portion 10b of the first operating member 10 protrudes like the second operating member 8.

In short, in this embodiment, the first and second operating members 8.10 are hooked onto the windows 6d and 6e of the frame section 6, and the cassette section 1
2 is suspended by this operating member 8.10 to assemble the middle clasp.

The cassette part 12 has a storage opening in the direction of the band width, and has a structure from which the operating member 8.10 is stored. Since operating members and elastic bodies are not housed in the opening/closing system, the problem of making the clasp large and making it difficult to process has been solved.

Moreover, since the frame part 6 and the cassette part 12 are made completely separately, even if the band width changes, only the cassette part 12 can be used, and the side plates 6a and 6b of the frame part can be used.
This can be solved by changing only the width. As a result, the cassette section 12 can be adapted to bands having various widths, so there is no inconvenience when it is mass-produced, and it has the advantage of being inexpensive.

Furthermore, it is difficult to make the windows 6d and 6e for the wide side plates of the frame part 6, but as shown in Fig. 5, two pieces of material are used, and the - piece is cut out. Then he made a window by pasting the other one together.
It is also possible to improve processability.

Furthermore, as a feature of this embodiment, as shown in the figure, the width of the operating parts 8b, 10b of both operating members 8.10 is the maximum width of the operating members, and the width of the operating parts 8b and 10b of both operating members 8.10 is the maximum width of the operating members, and the width of the operating parts 8b and 10b of the operating members 8.10 is the maximum width of the operating members. It is also possible to make the size compact.

This is because the second operating member 8 has a structure in which the pin prevents the first operating member 10 from sliding under the outward pressure of the spring at the bent end surface 8d. With this structure, the width of the operating member can be kept within the width of the operating section, making the clasp itself compact.

From the viewpoint of operability of the clasp, the larger the cross-sectional area of the operating parts 8b and 10b of the operating member, the better. This is because the larger the fingertip, the larger the surface that touches the fingertip, making it easier to press.

If you try to achieve this without increasing the thickness of the clasp itself, you will have to increase the width of the operation part, but the third
The method shown in FIGS. 4 and 4 has the advantage that the width of the operating section can be made extremely large because the size inside the cassette section does not exceed the medium size.

FIG. 6 shows another embodiment according to the present invention, in which a temporary clasp is designed to be made separately into a frame portion 30 and a cassette portion 62.

FIG. 7 is an exploded perspective view of the components of the clasp shown in FIG. 6.

In this figure, 34 is a first operating member, 66 is a second operating member, 64a is a locking part, 64b is an operating part, and 34C
36a is a notch portion for receiving the elastic body; 36a is a push-up portion;
b is the operation part, 66C is the notch part for receiving the elastic body, 68
4 is a ring spring elastic body, 40 is an upper lid, 42 is a connecting member, 4
4 is a temporary hanging metal fitting, 46 is a hook and top cover connecting material, and 748 is a frame back plate material.

In this example as well, the claim part 30 and the cassette part 62 are combined, and the cassette part 62 is connected to the frame part 30.
It is suspended by operating members passed through windows 3[]d and 30e of side plates 30a and 30b.

Here, the tongue 32b portion of the cassette portion 62 is arranged to fit under the connecting portion 30C of the frame portion 60. When the frame portion 60 and the cassette portion 62 are to be fixedly connected, the connecting portion 50C and the tongue 32b may be spot welded or screwed together.

Although the embodiment shown in FIG. 1 and the embodiment shown in FIG. This also applies to the embodiment shown in .

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, the SN type clasp can be made into: ■ a small and compact shape that is easy to process; and ■ it can be applied to high-class items with a wide outer frame. ■ The cassette part can be made cheaply because it can be applied to many band widths; ■ The operating member is easy to operate and can be operated easily, and the middle clasp can be made smaller.

[Brief explanation of drawings]

Fig. 1(al~((j) is a perspective view showing one embodiment of the middle clasp fitting of a watch band based on the present invention, Fig. 2 is a prior art S
A partially exploded perspective view showing the N-type middle clasp, Figure 3 is the 1st
FIG. 4 is an exploded perspective view of the components of the embodiment shown in the figure, FIG. 4 is a sectional view of the main part of FIG. FIG. 7 is an exploded perspective view of the component parts of the embodiment shown in FIG. 6. 6.60...Frame part, 6a, 6b...Side plate, 6d, 6e...Window, 8...Second operating member, 8a... ...Push-up part, 10...First operating member, fob...Lock retaining part, 14...Pin Fig. 1 (C) Fig. 4 Shoe No. Figure 5

Claims (3)

[Claims] (1) A fixed locking member attached to one side of the watch band,
A clasp for a watch band that locks and connects a movable locking member that is pivotally supported on the other side of the watchband, wherein one of the fixed locking member and the movable locking member is connected to a first locking member. and when the other is used as a second locking member, the first locking member has a lock portion that acts as a hook and a flip-up portion that receives a pushing force, and the second locking member The member includes a first operating member and a second operating member that are movably arranged opposite to each other in the width direction of the watch band and are each biased outward in the width direction of the watch band, The first operating member includes a locking part that engages with and locks the locking part, and the second operating member includes a push-up part that pushes up the flip-up part, and the second operating member has a push-up part that pushes up the flip-up part. In the watch band clasp which releases the locking connection between the first locking member and the second locking member by simultaneous release operations, the second locking member is connected to both the operating members. A frame portion consisting of a side plate having a window through which the operating portion passes and a connecting portion connecting the side plates; and an elastic body that presses the first and second operating members and both operating members to the outside of the band width. and a cassette part for storing the band, the cassette part having a storage opening only in the width direction of the band, and being suspended by both the operating members, with the operating part passing through the window of the frame part. A clasp fitting for a watch band. (2) The watch band according to claim 1, wherein the lengths of the first and second operating members in the watch band longitudinal direction and the length of the storage opening of the cassette portion in the watch band longitudinal direction are substantially the same. Middle clasp fittings. (3) Windows are formed at approximately the same height on the side plates of the frame section, and the locking portion of the first locking member and the push-up portion of the second locking member are laminated in the storage portion of the cassette portion. A through hole is formed in the first operating member through which a pin passed through the upper and lower plates of the cassette portion passes, thereby regulating the operating range of the operating member, and the operating range of the operating member is restricted. 3. The timepiece according to claim 2, wherein the operating portion is bent relative to the push-up portion on the operating member, so that the operating range of the operating member is restricted by the bent portion. Band clasp.