JP2895170B2 - Middle clasps such as watch bands - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present application relates to an improvement of a clasp for a watch band or the like, and more particularly, to an improvement of a clasp of a one-touch push button type.

For example, Japanese Utility Model Application No. 1-112712 discloses a one-touch Nakadome as shown in FIG.

In this figure, 2 is a hinge portion, 4 is a lower plate, 6 is an upper plate, 8 is a hook, 10 is an operation lever, and this lever is configured to protrude by a spring. This operation lever 10
When the upper plate 6 is lowered onto the lower plate 4, the hook 8 has a locking piece to be hooked.
However, it moves inward and returns to its original position again when the hook 8 has been fully inserted, so as to fulfill the function of a clasp.

However, when the operating lever 10 is pressed with some beat while the clasp is stopped, the locking piece moves, and when the force acting on the lever 10 is lost, the locking piece is hooked on the hook 8 again. It should be, but often not.

When the clasp is stopped, the upper plate 6 is pressed against the lower plate 4 so that the hooks 8
However, when the operating lever 10 is pushed, the position of the upper plate 6 is slightly raised from the pushed position. This is because it will not be able to return because it is caught on the tip of the.

To eliminate this, there is a method such as strengthening the spring, but if the spring is too strong, the lever 10 will bite into the fingertip when pressing the operating lever 10 and remove the clasp, or the clasp will be stopped At times, the upper plate 6 had to be pressed against the lower plate 4 with a strong force, which was difficult.

In view of this, in the present application, considering the present situation of such a one-touch type push button system, a completely new one-touch system which is not a method of overlapping vertically, and which can solve the above-mentioned problem of the present state (we propose a new method) ATT method).

 Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a metal clasp according to an embodiment of the present invention. Numeral 14 denotes a male part which is a first component, 16 denotes a female part which is a second component, and 18 denotes a connector which is a third component.

20 is a connecting lever 22, 24 that operates in the length direction of the band.
Is an operating lever that operates in the width direction of the band, 26 is a housing that houses these components including a control spring (FIG. 3), 28 is a connecting member for connecting to the band, and 30 is a connecting lever 20. The hole to be stored, 32 is a connecting member for connecting to the band, 34, 36, 40 constitutes the connecting body 18, 40
Is a frame portion, and 34 and 36 are connecting portions for associating the first component and the second component with the frame, respectively.

Reference numeral 38 denotes a locking portion for mechanically fitting and fixing the connecting portion 36 to the frame portion 40.

FIG. 3 is an external view of the first component 14 shown in FIG. 1 when the back cover of the housing portion 26 is removed.

FIG. 4 shows the middle clasp shown in FIG.
44 is a lateral external view when attached to 44. FIG.

FIG. 5 is a view in which the clasps of FIG. 1 are connected, and a part of the second component is a sectional view.

As shown in FIG. 4, the fasteners are connected to both ends of the bands 42, 44 by connecting members 28, 32, and then the second component 16 is first lowered toward the frame 40, and Is mechanically fitted and fixed to the locking end 40a of the frame portion 40. Then, when the first component 14 is lowered toward the frame portion 40, the obliquely cut end surface of the connection lever 20 hits the corner portion 16a of the second component 16 and is forcibly forced into the housing 26. Pressed.

As shown in FIG.
A notch 20a is provided on the opposite side of the portion protruding from the hole, and a control spring 27 is fitted therein.

Both control levers 22, 24 are pressed outward in the band width direction by this control spring.

The connecting lever 20 is pushed into the housing 26 against the force of the control spring 27, and the first component 14 is
When the connecting lever 20 is lowered until it hits 40, the connecting lever 20 is opened by the force of the control spring 27.
And is stored therein as seen in FIG.

In this state, even if an attempt is made to lift the first component 14 upward, the upper surface of the connecting lever 20 hits the upper surface of the hole 30 and cannot be lifted.

To remove it, the operating levers 22, 24 are pressed in the direction into the housing 26 as shown in FIG. The control spring 27 bends the center, and the contact position 22 with the operation levers 22 and 24
The center is located on the left side of the drawing rather than the straight line connecting a and 24a. Therefore, when the operating levers 22 and 24 are pressed, the control spring 27 bends to extend the center to the left in the drawing, and the connecting lever 20 operates accordingly, and the connecting lever
The right end of 20 also gets into housing 26.

Then, as can be seen from FIG.
If you lift it, it will come off easily.

Then, when the second component 16 is lifted, both the double doors open.

Incidentally, the relationship between the length (l) of pressing the operation levers 22 and 24 and the length (x) of the movement of the connection lever 20 is from the contact point of the operation lever 22 with the control spring 27 to the center line of the connection lever 20. Let a be the length of a, and let b be the length from the straight line connecting the center lines of the operation levers 22 and 24 to the maximum bending position of the control spring at normal time. The length of the square slope c is This is 1/2 of the actual length of the control spring 27, and since this length does not change, the relational expression between the length l of pressing the operation lever 22 and the moving length x is next. And from here Becomes

For example, when a = 5 mm, l = 0.4 mm, and b = 1 mm, x = 1.2 mm.
The coupling lever 20 is operated twice as long.

In other words, even if the tip of the connecting lever 20 is 1.2 mm, and if the operating levers 22 and 24 are operated by 0.4 mm each, the middle clasp comes off, the operation is simplified, and the operation amount is reduced. The fingertip that has been pressed does not hurt because it requires less.

Also, while fastening the clasp, even if one of the operation levers is pressed, there is play between the operation levers 22 and 24 and the control spring 27, and the connection lever 20 can completely enter the housing with only one of them. Absent. It can also be made in advance as such. Therefore, the hole 30 in which the connecting lever 20 is stored
Therefore, when the operating levers 22 and 24 are released from the pressing state, they return to the original fastening state.

FIG. 6 shows another embodiment of the present invention. In this case, the base clasp which is the base is of a two-fold type.

46 is a first component, and 48 and 50 are second and third components, respectively.

52 and 54 are operation levers, 56 is a control lever, 58 is a connecting member, 60 is a hole, 62 is an upper plate, 64 is a middle plate, 66 is a floor plate, and 68 and 70 are bands.

The structural contents of the first and second components are the same as those in FIG. 1, but in this case, since the second component is welded or fixed to the straight base plate portion, the catch is stopped and the connecting lever is stopped. Once the 56 enters the hole 60, no matter how much the first component 46 is lifted, the second component 48 does not move, so that it can be completely stopped.

FIG. 7 shows another embodiment of the present invention, in which the structure of the first component is different from that of FIG.

72 and 74 are operation levers, 76 is a connection lever, 78 is a control spring, a spring 80 is a transmission member 82 and a transmission member 82 is a spring receiving member.

The operation lever 74 has a distal end bent so as to be disposed below the operation lever 72.

The connection lever 76, the transmission member 80, and the spring receiving member 82 are integrally formed or are fixed to each other. Usually, a spring 78 acts on the left side in the drawing.

When the connecting lever 76 is pushed from the left to the right, the spring 78 is compressed and moves to the left.

When the operating levers 72 and 74 are simultaneously pressed, the transmission member 80 is moved to the right in the drawing, and at the same time, the connecting lever 76 is drawn into the housing 84.

 FIG. 8 is an exploded view of the parts shown in FIG.

FIG. 9 is an example of the first component at that time in the embodiment according to the present invention when there is one operation lever.

86 is a housing, 88 is an operation lever, 90 is a connection lever,
92 is a control spring. Here, one end of the control spring 92 is fixed or semi-fixed to the housing.

When the operating lever 88 is pressed, the connecting lever 90 moves to the left in the drawing and is housed in the housing to perform the same function as in FIG. 1, but only by operating one operating lever 88. There is some safety concern that Nakadome will come off. However, when the present invention is to be applied to a narrow band such as a female hand, the position of the connecting lever 90 in FIG. Slight pressing of "distance"
With this, the connecting lever 90 can be operated several times.

As described above, the invention of the present application is, in the past, a two-fold, one-touch button type applied to a clasp such as a double door, there is only one that requires superimposed or upside down operation or quite troublesome operation. According to the method of the present invention, the middle clasp comes off in a series of operations of picking up the first component from the width direction of the band to remove the clasp, and furthermore, the operating lever is slightly operated to remove the clasp. By simply moving the connecting lever, you can move the connecting lever several times the length, and from one side you can easily remove the clasp softly,
On the other hand, the connecting lever is housed deeply in the hole and can be engaged so that it cannot be easily removed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a clasp according to the present invention, FIG. 2 is an example of a conventional one-touch clasp, and FIG. 3 is an external view of a first component of FIG. FIG. 4 is a lateral external view of the clasp shown in FIG.
FIG. 1 is a partial sectional view of FIG. 1, FIG. 6 is a view of another embodiment of the clasp according to the present invention, and FIG. 7 is a first component of the clasp according to the present invention. FIG. 8 is an exploded view of the parts shown in FIG. 7, and FIG. 9 is a first structural element of the clasp according to the present invention, in which the operating lever is 1
FIG. 10 and FIG. 11 are explanatory diagrams for approximate calculation of the operation amount of the operation lever and the movement amount of the connecting lever based on FIG. 14, 46 ... first component, 16, 48 ... second component, 18, 50 ... third component, 20, 56, 76, 90 ... connecting lever, 22, 24, 52 , 54, 72, 74, 88 ... operating lever, 30, 60 ... hole.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 62-181213 (JP, U) JP-A 1-154816 (JP, U) JP-A 2-36314 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) A44C 5/18 A44C 5/24

Claims (1)

(57) [Claims] 1. A middle clasp for a watch band, the clasp comprising three components, a first component comprising a male connecting lever operating in the longitudinal direction of the band. An operating lever that operates in the width direction of the band, and a control spring that controls the operating lever, the second component constitutes a female portion having a concave hole that can accommodate the connecting lever, The component connects the first and second components, and in the metal clasp comprising a connected body that can be fixed,
The control spring has an arcuate shape and engages with the connection lever.In a normal state, the control spring has a function of projecting the connection lever, and when the operation lever is pressed in the center direction of the band, the control spring is actuated. The middle clasp of the watch band, wherein the coupling lever is configured to act in the direction of disconnection.