JPH1033218A - Connection structure of watch band fixture and watch case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a fixture to a case by providing a spring rod hole opened to a notch provided on the end part lower surface of the fixture and engaging pivots on both ends of a spring rod to the holes of the case. SOLUTION: A horizontal notch 11 whose cross section is an inverse L shape composed of a horizontal lower surface 11a and a vertical side face 11b is provided over the entire length in the longitudinal direction of a band on the end part lower surface of the fixture 10. In the meantime, the hole 13 to which the sprint rod 12 is inserted is composed of a large diameter hole whose diameter is larger than the spring rod 12 on both end parts and a small diameter hole for engaging the spring rod at a center. The spring rod 12 is inserted to the hole 13 of the fixture 10, the fixture 10 and the case 15 are turned over and the pivot 12a at the tip of the spring rod is inserted to the hole 16a of the leg part 15a of the case 15 on a side without the notch 11. Since the notch 11 is large and a relatively large interval is formed between a groove 13c and the spring rod 12, the spring rod 12 is easily curved by inserting a tool, the pivot 12b is inserted and engaged to the hole 16b of the case 15 and the fixture 10 is fixed to the case 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip structure for connecting a tip of a band end of a watch to a watch case,
In particular, the present invention relates to a connection structure between a solid tip and a watch case.

[0002]

2. Description of the Related Art A spring bar is used to attach a solid tip to a watch case. In order to press this tip against the side of the watch case, the spring bar is bent into the case and inserted into the tip. This will be described with reference to the drawings.

FIG. 7 is a partially cutaway plan view showing a conventional tip and a watch case, FIG. 8 is a perspective view showing the tip, and FIG. 9 is a diagram showing the relationship between a spring bar and a leg hole of a case and mounting work. It is a back view for showing. As shown in FIG. 7, the watch case 1 has a tip 2 inserted between the legs 3 and attached by a spring bar 4. As shown in FIG. 8, a U-shaped notch 6 is formed on one side of the tip of the tip of the tip of the tip of the tip of the tip for the attachment and detachment of the tip.

To attach the tip to the case, a spring bar 4 is required.
Is inserted into the hole 5 of the tip 2 in advance. Then Case 1
The tip 2 is turned over, and the pivot 4a at the tip of the spring bar on the side without the notch 6 is inserted into the hole 7 of the case. Next, a tool is inserted into the notch 6, the spring bar 4 is gripped, and the pivot 4b at the other end is pushed into the hole 7 of the case leg 3, as shown in FIG.

[0005]

SUMMARY OF THE INVENTION
In order to press the front surface 2a (FIG. 8) of the case 1 against the side surface of the case 1, the center of the hole 7 of the case is eccentric inward of the case. For this reason, the pivot 4a is hard to enter the hole 7 and is forcibly bent. However, the operation is extremely difficult in a narrow notch.

An object of the present invention is to solve the above-mentioned problems and to provide a structure that can easily fix a solid tip to a case. A second object of the present invention is to
The object of the present invention is to provide a structure in which the spring rod is largely curved, and the leading end is strongly pressed against the case.

[0007]

According to a first aspect of the present invention, there is provided a connecting structure for a watch band leading pin and a watch case, wherein a notch comprising a horizontal lower face and a vertical side face is formed on a lower face of an end of a solid tip hook attached to a tip of the watch band. A spring rod hole that penetrates the tip of the spring in the lateral direction and opens at the cutout, and the pivots at both ends of the spring rod inserted into the spring rod hole engage with the holes of the case, thereby setting the tip to the case. It is characterized by being fixed to.

According to a second aspect of the present invention, there is provided a connecting structure for a watch band and a watch case, wherein a solid surface attached to the end of the watch band is provided with a slope along the longitudinal direction on the lower surface of the end. A spring rod hole that penetrates in the lateral direction and opens on the slope is provided, and the pivots at both ends of the spring rod inserted into the spring rod hole engage with the holes of the case to fix the leading end to the case. It is characterized by.

[0009] The invention according to claim 3 is characterized in that the spring rod hole has a small-diameter hole in which the spring rod engages at the center, and a large-diameter hole at both ends or one end thereof. The invention according to claim 4 is characterized in that the hole of the watch case is eccentric inward of the case with respect to the spring bar hole.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing a tip according to the present invention, FIG. 2 is a perspective view of the tip, FIG. 3 is a side view of the tip, and FIG.

As shown in FIG. 2, the tip 10 according to the present invention is provided with a horizontal notch 11 having an inverted L-shaped cross section comprising a horizontal lower surface 11a and a vertical side surface 11b. It is provided over the entire length. One spring bar
The hole 13 into which the spring rod 12 is inserted has a large-diameter hole 13a having a diameter larger than that of the spring rod 12 at both ends, and a small-diameter hole 13 at the center of which the spring rod engages.
b.

As is apparent from FIG. 3, the horizontal lower surface 11a of the notch 11 passes through the center of the hole 13, so that the large-diameter hole 13a is a groove 13c having a semicircular cross section on the horizontal lower surface 11a. Note that a holding plate 14 is provided at the lower part of the front surface of the tip to prevent the tip from rotating upward when the tip hits the lower side of the case. The other end has a hole 17 into which a pin connected to the band is inserted.

Next, a method of fixing the starting point will be described. The spring bar 12 is inserted into the hole 13 of the tip, and the tip and the case are turned upside down. On the side without the notch 11, the pivot 12a at the tip of the spring rod is inserted into the hole of the leg 15a of the case 15 as shown in FIG. 16a. Next, the driver,
A tool such as tweezers or pliers is inserted into the notch 11, the spring bar 12 is gripped and bent, the pivot 12b is engaged with the hole 16b of the case, and the tip is fixed to the case.

Since the hole of the case is eccentric toward the inside of the case, as shown in FIG. 3, the pivot 12b and the spring rod main body are eccentric. That is, the spring bar 12 is largely bent toward the case 15 in the large-diameter hole 13a, whereby the tip is strongly pressed against the case. As is clear from FIGS. 3 and 4, the notch 11 is large, and the groove 13c and the spring rod 12
Since a relatively large space is formed between the pivot 12 and the pivot 12, the spring rod is easily bent by inserting a tool,
b can be inserted into the hole 16b of the case.

FIG. 5 shows a second embodiment of the present invention. In the first embodiment, large-diameter holes are provided at both ends of the spring rod hole 13, but in the second embodiment, the large-diameter holes 13a are provided only at one end. Since the structure of other parts is the same as that of the first embodiment, the same reference numerals are given and the description is omitted.

FIG. 6 shows a third embodiment of the present invention. In the first and second embodiments, the notch 11 is provided in the lower surface of the end of the tip 10 in the first embodiment. However, in the third embodiment, the notch 11 spreads upward in the lower surface of both ends and extends in the longitudinal direction of the band. A slope 18 is provided over the entire length. One spring bar
The hole 13 into which the spring rod 12 is inserted has a large-diameter hole 13a having a diameter larger than that of the spring rod 12 at both ends, and a small-diameter hole 13 at the center of which the spring rod engages.
b.

As is clear from FIG. 6, the large-diameter hole 13a formed on the side surface of the tip 11 along the longitudinal direction of the band,
The slope 18 forms a substantially semicircle 13d. The structure of the other parts is the same as that of the first embodiment, and the description is omitted.
In the third embodiment, the inclined surface 18 is provided on the lower surface of both ends of the tip 11 and the large-diameter holes 13a are provided at both ends of the hole 13, but the inclined surface 18 and the large-diameter hole 13a are provided only at one end.
Needless to say, the present invention can be realized by providing one slope 18 and one large-diameter hole 13a at either end. Also, in the first embodiment and the second embodiment, the present invention can be realized by providing one notch 11 and one large-diameter hole 13a at either end of the leading end.

The ratio between the length of the large diameter hole and the length of the spring rod hole is 0.3.
A range of 1 to 0.7 is preferred. If this ratio is smaller than 0.1, the mounting property to the earlier case becomes worse, and 0.7
If it is larger, the fixing force to the case is reduced, and there is a possibility that the leading edge may come off.

The ratio between the length of each large diameter hole at both ends and the length of the spring rod hole is preferably in the range of 0.1 to 0.4. The ratio is 0.1
If the size is smaller, the mountability to the case is deteriorated.
If it is larger than 4, the attachment to the case will be better,
When the fixing force to the case is reduced and the tip is applied to the outside, the tip may come off.

[0020]

EXAMPLE An example of the first embodiment is as follows. Width of tip 10 (length of hole 13): 1.8 cm Length of tip 10 (length in the band longitudinal direction): 8.8 mm Length of each large-diameter hole 13a: 4.5 mm Radius of large-diameter hole: 1.8 mm Small hole radius: 1.3 mm Ratio of length of each large hole to total hole length: 0.25

[0021]

According to the present invention, on the lower surface of the end of the tip,
A wide notch or slope consisting of a horizontal lower surface and a vertical side surface is provided, so insert a tool into the notch or slope and grasp the spring bar to easily insert the spring rod end pivot into the hole in the watch case. Can be engaged. Also, since the spring rod hole of the tip is a small diameter hole with which the spring rod engages, and both ends or one end are large diameter holes, the hole of the watch case is eccentric to the inside of the case with respect to the spring rod hole. In addition, the spring rod is largely bent in the large-diameter hole, and the leading end is firmly fixed to the watch case with a strong force.

[Brief description of the drawings]

FIG. 1 is a plan view showing a tipping according to the present invention.

FIG. 2 is a perspective view of the tip.

FIG. 3 is a side view of the tip.

FIG. 4 is a rear view of the tip.

FIG. 5 is a plan view showing a second embodiment of the present invention.

FIG. 6 is a perspective view of a tip showing a third embodiment of the present invention.

FIG. 7 is a partially cut-away plan view showing a conventional tipper and a watch case.

FIG. 8 is a perspective view showing the tip.

FIG. 9 is a rear view showing a relationship between a spring bar and a leg hole of a case and an attaching operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Watch case 2 Pointer 2a Front surface 3 Leg part 4 Spring bar 4a, 4b Pivot 5 hole 6 Notch 7 hole 10 Pointer 11 Horizontal notch 11a Lower surface 11b Side surface 12 Spring bar 12a, 12b Pivot 13 hole 13a Large diameter hole 13b Small diameter hole 13c groove 13d approximately semicircle 14 holding plate 15 case 15a leg 16a, 16b hole 17 hole 18 slope

Claims (8)

[Claims] 1. A notch comprising a horizontal lower surface and a vertical side surface is provided on a lower surface of an end portion of a solid tip attached to a tip of a wristwatch band, and a spring bar penetrating in a lateral direction of the tip and opening at the notch. A connection between the watch band and the watch case, wherein a hole is provided, and the pivots at both ends of the spring bar inserted into the spring bar hole engage with the holes of the case to fix the tip to the case. Construction. 2. A spring bar hole which is provided on the lower surface of an end of a solid point attached to the tip of a wristwatch band along the longitudinal direction of the band, penetrates in the lateral direction of the point, and opens on the inclined surface. Wherein the pivots at both ends of the spring bar inserted into the spring bar holes are engaged with the holes of the case to fix the head to the case. . 3. The watchband tip and watch according to claim 1, wherein the spring rod hole has a small diameter hole with which the spring rod engages, and both ends or one end thereof are large diameter holes. Case connection structure. 4. The connection structure of a watch case and a watch case according to claim 1, wherein a hole of the watch case is decentered inward of the case with respect to the spring bar hole. 5. The connecting structure of a watch band and a watch case according to claim 1, wherein the notch is provided along the entire length of the watch along the longitudinal direction of the band. 6. The connecting structure according to claim 2, wherein the slope is provided along the entire length of the tip along the longitudinal direction of the band. 7. The watch band tip and watch case according to claim 3, wherein the ratio between the length of each large diameter hole at each end and the length of the spring rod hole is in the range of 0.1 to 0.4. Connection structure. 8. The watch band tip and watch case according to claim 3, wherein the ratio of the length of the large-diameter hole at one end to the length of the spring rod hole is in the range of 0.1 to 0.7. Connection structure.