JPS61290903A - Button - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to buttons, and more particularly to buttons attached to fabric without using thread.

(Prior art) A button that is attached to fabric without using a thread has a disc-shaped main body, a hollow shaft extending from the main body, and a disc-shaped leg that frictionally engages with the shaft. and a stop forming a corrugated portion on the outer circumferential surface of the leg extending perpendicularly about the axis. but,
Such conventional buttons require a large pressing force to frictionally engage the main body and the stopper, and it is not possible to obtain sufficient engagement force by frictionally engaging the corrugated parts of the legs. There is a drawback.

OBJECTS OF THE INVENTION It is an object of the invention to provide an improved button in which the above-mentioned drawbacks are substantially overcome.

(Structure of the Invention) According to the present invention, there is provided a button including a main body and a fastener for attaching the main body to fabric, wherein the fastener has a cross member and a leg extending from the cross member. a member having a T-shaped cross section, and a cup-shaped locking portion disposed around an end of the leg portion on the side opposite to the cross member portion and directed toward the cross member portion, the locking portion having a rim portion. a recess having a cup-shaped cross-section for receiving the locking portion and engaging a rim portion of the locking portion; and a lip disposed in the recess to allow the button to be pressed.

Preferably, said body has one flat surface, and said recess is a blind hole extending from said flat surface, the interior of said blind hole being enlarged to form a cavity having said cup-shaped cross-section. .

Particularly preferably, the rim part of the locking part has a plurality of V-shaped cuts that allow the locking part to be retracted when inserted into the blind hole.

Furthermore, particularly preferably, the T-shaped member is continuous with the locking portion.

Preferably, the locking portion has a similar shape to the cup shape of the recess.

(Effects of the Invention) The button of the present invention can be easily assembled. Furthermore, since the locking portion is cup-shaped, it can withstand stronger tensile forces than conventional buttons. Furthermore, since the locking portion and the recess have similar cup-shaped cross-sectional shapes, deformation of the locking portion is prevented and the main body and the locking portion are firmly fixed.

(Example) Embodiments of the present invention shown in the drawings will be described below.

In each figure, the same reference numerals indicate the same members.

The button shown in FIG. 1 includes a body l and a stop 2 received in the body. The body l has a circular cross section, comprising a flat surface 3 arranged on the negative side of the fabric (not shown) and an arched outer surface 4 on the side opposite the flat surface. 11
: The fitting 2 includes a T-shaped member 5. The T-shaped member 5 has a T-shaped cross-sectional shape with a cross member 6 having a circular cross section and leg portions 7 extending from the cross member 6 and having a circular cross section. The lower surface of the crosspiece part 6 is arranged on one side of the fabric to which the button is fixed in a state away from the flat surface 3 in use. The stopper 2 also includes an engaging W portion 8 that is connected to the T-shaped member 5.
The locking portion 8 has a hollow hemispherical cup shape and is elastically deformable.

As best shown in FIGS. 2 to 4, the transverse member 6 of the leg 7
The opposite end is molded into the inner base of the hollow cup-shaped locking part 8. The locking part 8 has a rim part 9 which is elastic and expandable. The rim part 9 extends towards the crosspiece part 6 and surrounds the leg part 7. A plurality of V-shaped notches 10 are formed in the rim portion 9 to allow it to contract radially from its normally expanded position as shown in FIG.

2) and FIG. 3, a blind hole 11 extending from a flat surface 3 is formed in the main body 1. As shown in FIG. The bottom of the blind hole 11 is enlarged to form a cup shape that is approximately the same as or slightly larger than the cup shape of the locking portion 8. The blind hole 11 forms part of a container or recess which has the same hemispherical cup-shaped cavity 12 as the locking part 8 . Blind hole 11 and cavity 1
A lip portion 13 is formed at the merging point between the holes 2 and 2. The lip portion 13 extends in the circumferential direction of the opening of the recess.

When attaching the button to the fabric, a small hole is made in the fabric, the locking part 8 is inserted in a chain type, and the bottom surface of the crosspiece part 6 is brought into contact with the fabric. When the stopper 2 is pressed toward the main body with its hemispherical outer surface aligned with the blind hole 11, the rim portion 9 of the locking portion 8 contracts in the radial direction.

Thereby, the locking part 8 closes the cut 10 until it passes through the blind hole 11. When the locking part 8 enters the cavity 12 of the recess, the rim part 9 expands, thereby causing the lip part 13 of the recess to expand.
engages the back side of the

When the locking part 8 is inserted into the blind hole 11, the rim part 9 of the locking part 8 first contracts, and the locking part 8 expands in the cavity 12 by entering into the cavity 12, and the locking part 8 expands in the cavity 12. The rim portion 9 comes into contact with at least a portion of the inner surface of the blind hole 11, and the rim portion 9 engages with the lip portion 3, thereby fixing the main body 1 and the stopper 2.

The dimensions of the locking part 8 and the cavity 12 are such that the hemispherical cavity 12 of the recess prevents the locking part 8 from expanding and inverting, and the main body l and the stopper 2 are firmly fixed. set to the value. If the dimensions of the hemispherical shape of the locking portion 8 and the recess are set as described above, even if the main body 1 and the stopper 2 are rotated through a relatively large angle, they will not be disengaged from each other.

The above button can be easily assembled. Furthermore, since the locking portion 8 is cup-shaped, it can withstand stronger tensile force than conventional buttons. Furthermore, since the locking portion 8 and the cavity 12 are similar in shape, deformation of the locking portion 8 is prevented and the locking portion 8 is firmly fixed.

Advantages and usefulness of the present invention include the locking portion 8 and the cavity 2.
It is also possible to obtain a cup shape other than a hemispherical shape, for example, a square shape in cross section. In this case, it is preferable that the cup shapes of the locking portion 8 and the cavity 12 are similar.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the button of the present invention;
The figure is a longitudinal sectional view of the button shown in Fig. 1, Fig. 3 is an exploded sectional view of the button shown in Fig. 2, and Fig. 4 is a perspective view showing an embodiment of the button used in the present invention. It is. l Two bodies, 2: Stopper. 3: Flat surface, 4: Outer surface, 5: T-shaped member, 6: Cross member. 7: Leg part, 8: Locking part, 9, Rim part, 1o: Notch, 11: Blind hole,
12: Cavity, 13: Lip portion. Agent: Patent attorney Nobu Matsunaga, engraving of Yukiishi (no changes to the content)

Claims (5)

[Claims] (1) A button comprising a main body (1) and a stopper (2) for attaching the main body (1) to fabric, the stopper (2) comprising a crosspiece part (6) and a stopper (2) for attaching the main body (1) to fabric. A member (5) having a T-shaped cross section and having a leg portion (7) extending from the member portion (6), and disposed around the end of the leg portion (7) on the side opposite to the cross member portion (6). a cup-shaped locking part (8) directed towards said crosspiece part (6), having a rim part (9) and having an elastic expandable locking part (8); , the main body (1) has a recess (11) having a cup-shaped cross-section for receiving the locking part (8), and a recess (11) having a cup-shaped cross-section for receiving the locking part (8).
) a lip (13) arranged in said recess (11) to engage a rim (9) of the button. (2) The body (1) has one flat surface (3), the recess (11) is a blind hole extending from the flat surface (3), and the interior of the blind hole is inside the cup-shaped A cavity with a cross section (
12). The button according to claim 1, wherein the button is enlarged to form a button 12). (3) The rim portion (9) of the locking portion (8) has a plurality of V-shaped notches (10) that allow the locking portion (8) to contract when inserted into the blind hole. The button according to claim (1) or (2), having: (4) The T-shaped member (5) is connected to the locking portion (8), and the T-shaped member (5) is connected to the locking portion (8).
Button described in section 3). (5) The locking portion (8) has a similar shape to the cup shape of the recess (11),
), (3) or (4).