JP4031485B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener that can be easily attached and detached.

  Various kinds of fasteners are used for clothing, accessories, shoes and bags, and for industrial use. However, it may be necessary to use both hands to fasten or remove, and even with one hand, the force to fasten may be weak, or it may have to be pushed or pulled with a force that seems more than necessary.

The clip disclosed in the patent document to be described later is for a specific application. When removing the clip, a minus part such as a screwdriver is inserted into the outer groove (19) and the shaft body via the head (21) in the principle of the lever. (20) must be pulled up and pulled away from the flange portion (12) of the grommet (10), which is troublesome in applications where frequent attachment / detachment is required.
JP 2004-316856 A (paragraphs “0041” to “0042”, FIG. 8)

  The problem to be solved is that the fastener cannot be easily attached / detached with one hand, or the fastening force is weak even if it can be attached / detached with only one hand.

  In order to prevent both ends of the elastic plate (3) from entering and exiting the inner and outer sides at the same time from both openings on the side surface of the convex portion (2) so that only one end is not delayed, the upper and lower central axes of the convex portion (2) The elastic plate (3) is attached so that the center of the elastic plate (3) comes on the center axis of the core (4) that slides up and down on the inner surface of the hole penetrating through the hole. If the upper part of the core (4) is pushed downward, the central part of the elastic plate (3) bends downward, the straight line length between both ends is shortened, and it can pass through the narrowed part of the upper part of the opening of the concave part (1). If the core (4) is pulled up through the tag (6), the elastic plate (3) is centered. It is characterized in that the part is attached and detached in a configuration that bends upward.

  In the fastener of the present invention, when the core (4) is pushed toward the inside of the recess (1), the elastic plate (3) attached to the core (4) is bent downward and the upper part of the recess (1) is narrowed. If the core (4) is pulled up through the tag (6) from the stayed state, the elastic plate (3) is pulled back. Since it bends upward, there is an advantage that it can be easily attached and detached, such that it can be pushed with one hand, stuck and pulled off.

  The purpose of easy attachment and detachment is realized with components that do not require much height.

FIG. 1 is a cross-sectional view showing a state before a fastener is fastened as an embodiment of the present invention, and each component is shown in a three-dimensional view. In the concave portion (1), a recess is formed around the inner side surface of the upper opening. And a hole penetrating in the longitudinal direction of the center of the convex portion (2), so that the core (4) can slide up and down, and an opening portion is also provided in the lateral direction so that the elastic plate (3) can move left and right. Thus, the core (4) is also provided with openings such that the chevron surfaces face each other in the vertical direction in the lateral direction, and the hole through which the rivet-shaped shaft body (5) passes is formed in the central vertical direction.
Assemble the convex part (2) and the side opening of the core (4) through the elastic plate (3), and then align the center holes of the core (4) and elastic plate (3) to obtain the shaft (5). After passing, the lower part of the shaft body (5) is spread out so as not to come out of the core (4), and the core (4) is elastic so that it can be easily pulled up to the head of the shaft body (5). Attach tag (6) consisting of body.

  FIG. 2 is a cross-sectional view showing a state immediately before the fastener is retained. When the tag (6) is pinched and the tip of the convex part (2) is brought close to the opening of the concave part (1) and the core (4) is pushed inward of the concave part (1), the middle of the flat elastic plate (3) is lowered downward. The both ends of the elastic plate (3) are retracted inside the opening on the side surface of the protrusion (2) and passed through the narrowed opening on the upper part of the recess (1). ) Reach inside the side depression.

  FIG. 3 is a cross-sectional view showing a state in which the fastener remains. Both ends of the elastic plate (3) become the original flat shape in the side recess of the recess (1), and the length becomes longer than the diameter of the opening at the top of the recess (1) and stays.

  FIG. 4 is a cross-sectional view showing a state immediately before the fastener is removed. If the core (4) is pulled upward through the tag (6), the middle of the elastic plate (3) is bent upward, and the length in the straight line in the left-right direction is shortened, and both ends of the elastic plate (3) are recessed ( 1) It passes through the narrow opening at the top of the recess (1) from the depression on the side surface and comes off. Near both ends of the elastic plate (3) is tapered, and even if it is sandwiched between the opening at the top of the recess (1) and the opening at the side of the projection (2), the middle of the elastic plate (3) is pulled up and inside It is easy to come off when pulled.

  FIG. 5 is a cross-sectional view showing a state in which a load to be removed is applied to the fastener. Unless the core (4) is pulled upward via the tag (6), the mounted member A (7) to which the convex portion (2) is attached is attached to the mounted member B to which the concave portion (1) is attached. Even if a force to pull off from (8) is applied, both ends of the elastic plate (3) are sandwiched between the narrowed opening of the upper part of the concave part (1) and the opening part of the convex part (2), I can't go through the narrow gap, so it won't come off. In this way, there is an effect that it can be easily attached and detached so that it can be stopped by pushing the core (4) and conversely removed by pulling up the core (4) via the tag (6).

  In the embodiment of FIG. 6, a cross-shaped elastic plate A (3A) is inserted between the core A (4A) and the abutting portion (4b), aligned on the center line thereof, and passed through the shaft body (5) before the shaft. The groove (5b) at the lower end of the body (5) is spread outward so that the abutting part (4b) does not fall off. The upper part of the convex part (2B) is positioned on the opening part and each of the cross-shaped elastic plates A (3A). Place the convex upper part (2A) from above and press fit so that the tip part fits, and if the strength of the joint is not enough, reinforce and integrate by spot welding to attach and detach at four places on the four tip part Therefore, the engagement state is more stable than the two end portions of the rectangular elastic plate (3). In addition, a configuration using a plurality of tips such as three tips and five tips is also possible.

In the embodiment of FIG. 7, the mounted member B (8) is made of a hard and strong material, and the thickness does not hinder the entrance and exit of the elastic plate (3) from the opening of the convex portion (2). If it is within, the hole (9) having the same diameter as the opening of the recess (1) is made in the attached member B (8), and the recess (1) is not attached to the attached member B (8). 2) can also be inserted directly into the hole (9) and fastened.
In addition, the shaft A (5A) is recessed below the head so that the head of the shaft A (5A) can be picked up directly with a finger or a tool without attaching a tag (6).

  It can be easily attached and detached with one hand by pushing and pulling, and can be used for handicapped persons with disabilities and when they have to work with one hand, and can also be applied to applications that require strong fastening force.

It is sectional drawing which showed the state before fastening a fastener, and explanatory drawing which showed each component. Example 1 It is sectional drawing which showed the state just before a fastener stays. It is sectional drawing which showed the state in which the fastener has stayed. It is sectional drawing which showed the state just before removing a fastener. It is sectional drawing which showed the state in which the load which is going to remove to a fastener was applied. It is sectional drawing which showed the state before the fastener using the cross-shaped elastic board A (3A), and explanatory drawing which showed each component. (Example 2) It is sectional drawing which showed the state which opened the hole (9) in the to-be-attached member B (8) made of a hard strong material, and was directly fastened to the hole (9). (Example 3)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concave part 2 Convex part 2A Convex upper part 2B Convex lower part 3 Elastic board 3A Elastic board A
4 Core 4A Core A
4b Contact part 5 Shaft body 5A Shaft body A
6 Tag 7 Mounted member A
8 Mounted member B
9 holes

Claims (1)

  The side of the convex part (2) that supports the vicinity of both ends of the elastic board (3) by causing the central part of the elastic board (3) to bend and bend in the vertical direction, thereby causing the length in the straight line in the left-right direction to increase or decrease. In a fastener that allows both ends of the elastic plate (3) to enter and exit from both openings, and allows the narrowed portion of the top of the opening of the recess (1) to pass or stop, and to be attached and detached, In order to make each of both ends of the elastic plate (3) enter and exit from both the inner and outer sides simultaneously from both openings on the side surface of the convex portion (2), the inner surface of the hole penetrating on the vertical center axis of the convex portion (2) The elastic plate (3) is mounted so that the center of the elastic plate (3) is positioned on the center axis of the sliding core (4). When the upper portion of the core (4) is pushed downward, the elastic plate (3) is bent downward and the recess (1) Passes through the narrowed part at the top of the opening and stays in the original flat state at the recessed part, conversely Fasteners elastic plate (3), characterized in that the deviating bending upward Raising the core (4) via a tag (6) from the Waiting state.

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