JPH0731692Y2 - Length adjustment piece structure by pin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a length adjusting piece structure using pins of a watch band.

[Conventional technology]

As a conventional technique of a length adjusting piece structure using a pin of a watch band, a structure using a pin generally called a hairpin is shown in FIGS. 3 and 4.

FIG. 3 is a perspective view showing a connected state of raft-shaped piece bands, and FIG.
The figure is a cross-sectional view of a portion where the length adjusting pieces are connected by a hairpin. The watch band has a concave portion 22 at one end and a convex portion 21 at the other end, which is different from the concave portion 22 of the length adjusting piece 20.
Connecting through hole for inserting the hairpin 30 into the convex portion 21 of 20
23 is formed in the lateral direction of the band, and the connecting through hole is formed.
A hairpin 30 is inserted into the hairpin 23, and a protrusion 31 of the hairpin, which is formed on the hairpin 30 and has a spring property, engages with the connecting through hole 23 on one side of the recess 22.

Further, there is one using a pin generally called a drop pin. FIG. 5 is a sectional view of a portion where the length adjusting pieces are connected by the drop pin. This is because the through holes 23 and 25 for inserting the drop pin 40 into the concave portion 22 of the length adjusting piece 20 and the convex portion 21 of another length adjusting piece 20 have different diameters. The drop pin 40 is inserted into the holes 23 and 25, and the projection of the drop pin having springiness formed on the drop pin 40 in the connecting through hole 25 of the projection 21 of the length adjusting piece 20 having a larger hole diameter. A length adjusting piece structure with which 41 is engaged.

[Problems to be solved by the device]

However, the conventional technique has the following problems. First, when the hairpin 30 is used, due to the fitting of the connecting through hole 23 of the length adjusting piece 20 and the protrusion 31 of the hairpin having spring properties formed on the hairpin 30, there is variation in the diameter of hole processing. There is a problem that the fixing force of the hairpin 30 changes and it becomes difficult to adjust the band length. In addition, since the size of the portion with the protrusion 31 of the hairpin is different from that of the portion without the protrusion 31, the gap between the length adjusting pieces 20 is different at both ends in the lateral direction of the band of the length adjusting piece 20 to form a band. There is a problem that the displayability of is deteriorated.

Next, when the drop pin 40 is used, the problem of the hairpin 30 is solved, but the band length adjusting piece 20 is formed by the band manufacturing process after the drop pin 40 is assembled, particularly the polishing of the upper surface of the band and the weighting process. By pulling on each other with strong force,
There is a risk that the convex portion 41 of the drop pin is deformed, the fixing force of the drop pin 40 is reduced, the drop pin 40 may come off while the watch is being carried, the band may separate, and the watch may drop.

An object of the present invention is to solve the above-mentioned conventional problems and provide a length adjusting piece structure using a pin of a watch band in which the length of the band can be easily adjusted and the pin does not come off even when the watch is carried. It is a thing.

[Means for Solving the Problems]

To achieve the above object, the structure of the present invention is as follows.

A connecting through hole for inserting a pin is formed in the lateral direction of the band for inserting the pin into the concave portion of the length adjusting piece and the convex portion of the length adjusting piece, and the inner side surface of the concave portion and the outer side surface of the convex portion face each other. On one or both sides, conical slanted flat portions are formed opposite to both of the openings of the connecting through holes that face each other, and the pin has one or two protruding portions. And, the projecting portion is projected in substantially the same shape as the cross-sectional shape in the band lateral direction of the space where the sweeping portion faces, the pin is inserted into the connecting through hole, the pin and the connecting through hole, Further, a gap is provided so that the protruding portion and the sweeping portion do not come into pressure contact with each other, and the projecting portion is engaged and coupled to both of the opposing sweeping portions.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First
FIGS. 2 to 2 show an embodiment of the present invention, FIG. 1 is an exploded perspective view showing an assembly of a length adjusting piece, and FIG. 2 is a sectional view of a portion where a pin is inserted.

The length adjusting piece 1 has a concave portion 3 at one end and a convex portion 2 at the other end, and the protruding portion 2 of the length adjusting piece has a connection through hole 5 formed in the lateral direction of the band. At one or both of the openings of the connection through hole 5, a conical slanted portion 4 is formed. In addition, in the concave portion 3 of the length adjusting piece 1,
The convex portion 2 of another length adjusting piece 1 is inserted, and the connecting through hole 5 is formed in the band lateral direction at a position facing the connecting through hole 5 provided in the convex portion 2, and the length adjusting piece 1 is further formed. In one or both of the openings on the inner side surface of the connecting through hole 5 provided in the concave portion 3, the conical slanting portion 4 is formed. Therefore, when the convex portion 2 of another length adjusting piece 1 enters the concave portion 3 of the length adjusting piece 1, one or both of the inner surface of the concave portion 3 and the outer surface of the convex portion 2 which face each other, or both of them. Thus, the conical slanting portions 4 are positioned to face each other.

The pin 10 for sequentially connecting the length adjusting pieces 1 has a spring property protruding outward at least at one place so as to be engaged with the flat portion 4 of the connecting through hole 5 provided in the concave portion 3 and the convex portion 2 of the length adjusting piece 1. Is formed with a pin protrusion 11 having a.

The projecting portion 11 has a shape projecting in a substantially triangular shape on both sides with the longitudinal direction of the pin 10 as an axis. That is, the sweeping portion 4 of the convex portion 2 and the sweeping portion 4 of the concave portion 3 project in a shape substantially the same as the cross-sectional shape of the space facing each other in the lateral direction of the band.

Next, a method of connecting the length adjusting pieces 1 will be described. The convex portion 2 of another length adjusting piece 1 is inserted into the concave portion 3 of the length adjusting piece 1 so that the connecting through holes 5 provided in the concave portion 3 and the convex portion 2 of the length adjusting piece 1 face each other.

Next, the pin 10 is inserted into the connecting through hole 5 while bending the protrusion 11. When the protrusion 11 reaches the space where the sweeping portion 4 of the convex portion 2 and the sweeping portion 4 of the concave portion 3 face each other, the projecting portion 11 restores its original shape and engages with both of the facing sweeping portions 4. . At this time, the pin 10 and the connecting through hole 5, and further the protrusion 11 of the pin 10
A gap is provided between both the sluice portion 4 so as not to come into pressure contact with each other.

As described above, the length adjusting pieces 1 can be sequentially connected. Also, when adjusting the length of the band, the pin 10 can be pulled out by strongly pushing from one side of the connecting through hole 5 in the lateral direction of the band with a thin rod such as an awl.

In this embodiment, the wiper portion 4 is provided in the connecting through hole 5 of the concave portion 3 and the convex portion 2 of the length adjusting piece 1, but the connecting through hole 5 of the concave portion 3 or the convex portion 2 of the length adjusting piece 1 is formed. It goes without saying that it may be provided in only one of them.

[Effect of device]

As is clear from the above description, according to the present invention, a gap is provided so that the connecting through hole of the pin and the length adjusting piece, and the protruding portion of the pin and the exposed portion of the connecting through hole are not pressed against each other.
Even if there is variation in the diameter of the connecting through hole due to processing, the pin fixing force for the connecting through hole does not change. Therefore, the fixing force of the pin is too large to prevent the pin from coming off, or the fixing force of the pin is too small to accidentally come out of the pin. Therefore, the length of the band can always be easily adjusted, and the length adjusting piece does not come off while being carried on the wrist.

On the contrary, since the structure for drilling the connecting through holes does not require so much precision, it is possible to carry out the drilling with a good yield and to increase the mass productivity of the band.

Also, when the pin protrusion is in pressure contact, an external force is always applied to the pin protrusion, so the pin protrusion may be deformed or cracked, and the pin durability may be significantly increased. Although it deteriorates, since the present invention has a gap so as not to press-contact, the durability of the pin can be increased.

Further, when the protrusion of the pin is in pressure contact, the length adjustment piece is rotated while moving the protrusion of the pin and the pressure contact surface, so the rotatability of the length adjustment piece is poor, but the present invention does not pressure contact. Since the gap is provided in this manner, the length adjusting piece has good rotatability, and the flexibility of the band can be increased. In addition, the gap between the length adjustment pieces has disappeared and the exhibitability as a band has improved.

Further, according to the present invention, since the flat portion is formed in the connecting through hole at the position where the concave portion and the convex portion of the length adjusting piece face each other, and the protruding portion of the pin is engaged with the facing flat portion, Even when the length adjusting pieces are pulled with a strong force at the time of polishing or surface coating the surface, the protrusions of the pins elastically bend and absorb the applied force. Therefore, even if the pin is deformed, it is slight, and the pin does not come off or become easily dislodged, so that the change in pin fixing force to the connecting through hole due to polishing or basis weight processing is prevented. be able to. Therefore, it is possible to provide a band in which the length of the band can always be easily adjusted and the length adjusting piece does not come off while being carried on the arm.

Further, the conical shape of the swirl part and the protruding part of the pin are made to have a shape that is substantially the same as the cross-sectional shape in the lateral direction of the band in the space where the conical scoop parts face each other. At this time, when the pin is pulled out, the conical surface of the sweeping portion can be used as a guide slope to easily bend the protrusion of the pin having the same shape, so that the pin can be pulled out easily. In addition, since the pin can be easily pulled out from either direction, the length of the band can be easily adjusted.

Also, when the length adjusting piece is rotated while pulling the band, the pin protrusions contact the conical surface of the wiper, but the pin protrusions protruding in the same shape as the opposing conical wiper , Rotate without being caught by the conical surface of the sweeping part. Therefore, the length adjusting piece has good rotatability, and the flexibility of the band can be increased.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is an exploded perspective view showing a length adjusting piece assembly, FIG. 2 is a sectional view of a portion in which a pin is inserted, and FIGS. The figure is a conventional example, FIG. 3 is a perspective view showing a connected state of a raft-shaped piece band, and FIGS. 4 and 5 are sectional views of a portion where length adjusting pieces are connected by pins. 1 ... Length adjustment piece, 2 ... Convex part, 3 ... Recessed part, 4 ... Exposed part, 5 ... Connection through hole, 10 ... Pin, 11 ... Pin protrusion.

Claims (1)

[Scope of utility model registration request] 1. A structure in which length adjusting pieces each having a concave portion at one end and a convex portion at the other end are connected by a pin formed with a protruding portion having an outwardly protruding spring property, and the concave portion of the length adjusting piece. And a connecting through hole for inserting the pin in the convex portion of the length adjusting piece is formed in the lateral direction of the band, and one of the inner surface of the concave portion and the outer surface of the convex portion facing each other or On both of them, a conical inclined sloping portion is formed on both of the openings of the connecting through holes that face each other, and on the pin, one or two protrusions are formed,
And the protruding portion is projected in substantially the same shape as the cross-sectional shape in the band lateral direction of the space where the sweeping portion faces, inserting the pin into the connecting through hole, the pin and the connecting through hole, and further A length adjusting piece structure using a pin, characterized in that a gap is provided so that the protruding portion and the sweeping portion do not come into pressure contact with each other, and the projecting portion is connected to both of the facing sweeping portions by engaging with the protruding portion.