JP2551067Y2 - Metal clasp for portable band - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a clasp of a portable band such as a wristwatch band.

[0002]

2. Description of the Related Art FIG. 2 shows an example of a conventional clasp of a watch band. FIG. 2 (a) is an overall view when the clasp is opened. FIG. 2B shows the state when the engagement is performed. The clasp comprises a base 2 and opening / closing sections 4 and 6. The base 2 and the opening / closing part 4 are mechanically engaged with each other by the protrusion 2a and the engagement end 4a. The opening / closing portion 6 has a hook 2b and an engagement end 6a connected by a push button.

[0003] Mechanical coupling, if the applied force is increased,
Since the opening / closing section 6 is overlaid on the opening / closing section 4 and stays, the push button 8 of the opening / closing section 6 is formed even if the base 2 and the opening / closing section 4 are mechanically connected. Cannot be released unless the spring is pushed against the force of the spring of the spring bar 10. When detaching, first, the opening / closing section 6 is detached, and then the mechanical connection of the opening / closing section 4 is released. However, there is a problem in that the mechanical connection is difficult to adjust and becomes hard at the time of removal.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a portable clasp of a portable band which eliminates the mechanical connection and is easy to adjust and remove.

[0005]

In order to achieve the above object, the structure of the present invention is a portable band middle clasp, wherein the clasp comprises four components, and the first component is: A pair of connection levers that operate in the length direction of the band, an operation lever that operates in the width direction of the band, and a control spring that bends in the length direction of the band by operating the operation lever and controls the position of the connection lever And a component consisting of
A male component comprising a housing for accommodating the component is configured, the second component is a female component having a concave hole capable of storing the connecting lever, and the third component is a base component. The first component is fixed to a substantially central portion of the base portion, and the second component is connected to the open / close portion. The component is characterized by being made of a separating member such as a spring or a magnet that separates the base portion and the opening / closing portion from each other.

[0006]

According to the middle clasp of the present invention, when two female parts attached to the opening / closing part are closed from both sides with respect to a pair of male parts attached to the base part, the connecting lever of the male part becomes a hole in the female part. , And Nakadome stays. To remove this, when the male operating lever is pressed, the connecting lever is pulled out and the clasp is released by the function of the separating member.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is an overall view of one embodiment according to the present invention. The clasp includes a male portion 13 as a first component, a female portion 22, 24 as a second component, and a base portion, including a housing 12, operating levers 14, 16, connecting levers 18, 20, and the like. 28, opening and closing parts 30, 32
And a separating member as a fourth component comprising the spring plates 34 and 36.

When the female portion 24 is closed from the state shown in FIG. 1, the opening / closing portion 32 presses the spring plate 36, and the connecting lever 20 enters the concave hole 26 of the female portion and is fixed there. The female part 22 is similarly closed. FIG. 3 shows this state. At this time, Nakadome stays. FIG. 4 is a view showing the structure of the male part 13, and FIG. 5 is a perspective view thereof. In the housing 12, operation levers 14, 16 are provided.
, Two control springs 40 and 42 are sandwiched. When the operating levers 14 and 16 are pushed, the control springs 40 and 42 bend and the connecting levers 18 and 20 are pulled into the housing 12. 44 and 46 are guides for the connecting levers 18 and 20. Since the control springs 40 and 42 are formed so as to have a constant flexure from the beginning by heat treatment, even if the operating levers 14 and 16 are returned to the original positions, the connecting levers 18 and 20 are returned.
Does not protrude from the housing 12 beyond a certain value. It should be noted that a gill-shaped stopper may be attached to the connecting levers 18 and 20 for structural purposes, and similar effects may be aimed at.

That is, when the clasp is fastened, the connecting levers 18, 20 are provided with female portions 22, 24 on the obliquely cut upper surface.
Is pressed from above the lower end surface of the housing 12, thereby being pushed into the housing 12. The force causes the control springs 40, 42 to retract the flexible coupling levers 18, 20 therein. When the concave holes of the female parts 22, 24 descending from above come to a position where the connecting levers 18, 20 can be inserted, the connecting levers 18, 20 are pushed out by the force of the control springs 40, 42. Is inserted into the concave hole of the female part. Due to such a structure, when the clasp is fastened, the clasp can be smoothly held without mechanical creaking. In addition, if the corners of the lower end surfaces of the female portions 22 and 24 are dropped, they can be more smoothly stopped.

When removing the clasp, the operation lever 1
4 and 16 are pressed from both sides, the control spring 40,
42, the connecting levers 18 and 20 are
Pull into 2. For this reason, the female parts 22 and 24
It is flipped up under the force of 36. Also in this process, since the connecting levers 18 and 20 are moved by the deflection of the control springs 40 and 42, the process of removing them is performed smoothly. The separating member may be a member such as the spring plates 34 and 36, or may be formed by setting a magnet or the like and utilizing the repulsive force of the magnet.

[0011]

[Effects of the Invention] As described above, according to the present invention, there is no need for a locking portion due to mechanical fitting, so there is no trouble in adjustment at the time of assembling, and the operability at the time of installation and removal is extremely smooth. Is good.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a clasp according to an embodiment of the present invention.

FIG. 2 is a perspective view of an example of a conventional clasp, in which FIG. 2A is detached and FIG.

FIG. 3 is a perspective view when the clasp shown in FIG. 1 is fastened.

FIG. 4 is a schematic view of the inside of the housing of the clasp shown in FIG. 1;

FIG. 5 is a perspective view of the housing shown in FIG.

[Explanation of symbols]

 13 First component, male part 22, 24 Second component, female part 28 Base part 30, 32 Opening / closing part 34, 36 Fourth component, separation member 14, 16 Operating lever 18, 20 Connection lever 40 , 42 control spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A middle clasp for a portable band, wherein the clasp comprises four components, a first component comprising a pair of connecting levers operating in the length direction of the band, and a width direction of the band. An operating lever, a component comprising a control spring which is bent in the longitudinal direction of the band by operating the operating lever and controls the position of the connecting lever, and a male portion comprising a housing for accommodating the component. The second component is a female part having a concave hole that can accommodate the connection lever, and the third component is a double-opened frame composed of a base and an opening and closing part. The first component is fixed to a substantially central portion of the base, and the fourth component is formed of a separating member such as a spring or a magnet that separates the base and the opening / closing unit from each other. Wherein the element is connected to the opening / closing part. Middle clasps to do.