JPH066963B2 - Fasteners for fastening two panels in a face-to-face manner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention, for example, fastens one panel to the other panel in a contact surface manner so as to fix a trim board for interior lining of an automobile to a body. In this case, the present invention relates to a fastener for fixing two panels formed of plastic, which are effectively used, in a face-to-face manner.

[Prior Art] Japanese Patent Publication No. Sho 56-314 as a fastener for fastening two panels.
The fastener described in Japanese Patent No. 44 has been proposed.

The fastener of the present invention relates to an improvement of the fastener according to the above-mentioned proposal, and an object thereof is to improve the mountability of the female member and the stability of the binding force at the time of coupling with the male member. .

As described in the above-mentioned publication, the already proposed fastener has a head formed of two flanges of a male member inserted into a hole formed in one panel and mounted, and a body of a female member opened in the other panel. After pressing the mounting flange until it abuts the mounting hole and mounting it to each panel, mount one panel so that it faces the other panel, and the shaft protruding from the male member is attached to the body of the female member. The panels are pierced and joined together to secure the panels together. In this structure, when the female member is mounted in the mounting hole of the panel, it can be mounted by hooking the locking protrusion provided on the peripheral surface of the body to the edge of the hole. It is necessary to use the elasticity of the material to reduce the diameter of the protrusion, or to bend the body part inward, and to hook it through the mounting hole. It was necessary to insert it with a certain amount of strong force when mounting.

In addition, since the locking projections that lock the mounting holes are provided directly on the peripheral surface of the body in this way, there is a slight difference when inserting, but the body is always bent and the diameter is reduced. Due to the relationship with the male member that fits into the body and is connected, there is a problem that it is difficult to obtain a uniform connection due to the difference in the connecting force, and there is also a difference in the attaching force to the panel.

[Problems to be Solved by the Invention] In view of the above-mentioned proposed stopper, the present invention improves the insertability of the female member into the mounting hole of the panel to improve the mountability, and particularly the panel with a small insertion force. It is possible to attach to the panel, and after attachment, it exerts a stronger locking holding force compared to this small insertion force, and secures the attached state with two panels fastened to the contact surface. It is intended to provide a stopper to do this.

[Means for Solving the Problems] The present invention was developed to solve the problems of the above-described conventional stopper for a panel composed of two male and female members, the main feature of which is to mount it on one panel. A male member and a female member to be mounted on the other panel, the male member having a head to be mounted in the mounting hole of the panel and an engaging shaft portion hung from the lower surface of the head, and the other female member. The member is provided with an engagement body portion having a hollow inside and extending below the mounting flange for restricting the amount of insertion into the mounting hole of the panel, and a locking means for the mounting hole. In the fastener in which the panel members are fastened to each other in a contact surface shape, the female member has a hollow portion which is formed on the outer peripheral surface of the engagement body portion in the middle of its length and vertically penetrates the thick portion. Forming a bridge-shaped mounting bulge extending in the circumferential direction, and mounting the mounting bulge Provided is a fastener for fastening two panels in a contact surface form, which comprises a tongue-shaped engaging piece extending upright from an upper edge portion facing a lower surface of a lunge. Especially.

[Operation] In the fastener of the present invention, the head of the male member is hooked in the mounting hole formed in one panel, and the engaging shaft portion is mounted so as to stand up from the panel surface, and the mounting member is formed in the other panel. Insert the engaging body of the female member into the hole, bend the engaging piece provided on the mounting bulge on the outer peripheral surface once and let it pass through the hole, lock it on the back side of the panel and mount it. By inserting and coupling the engagement shaft portion of the male member into the engagement body portion of the female member, the two panels can be fixed to the contact surface.

Further, in the present invention, in particular, an engaging piece for locking the female member to the panel is extended from the upper edge portion of the mounting bulging portion provided on the outer peripheral surface of the engaging body portion, and is engaged when inserting into the mounting hole. As a result of the bending of the joint piece alone and the bending of the mounting bulge being absorbed, the outward protrusion of the engaging piece is absorbed, resulting in smooth engagement without any change in the engaging body, and after mounting. Regardless of how the engagement body is connected to the engagement shaft, the engagement body is locked to the panel in an independent state without directly affecting the engagement body.

Next, the features of the present invention will be described in detail with reference to the embodiments.

[Embodiment] FIG. 1 is a central longitudinal front view showing a use state in which panels A and B are fixed to each other in a contact surface state, and FIG. 2 is a front view before being combined.

The male member 1 and the female member 2 constituting the fastener of the present invention are individually formed of a plastic material, here polypropylene, and one male member 1 is a head 3 and an engaging shaft portion 4.
The other female member 2 is integrally provided with the mounting flange 5, the engagement body 6 and the engagement piece 7.

The head part 3 of the male member is formed by connecting a large flange 3a and a small flange 3b to each other with a neck part 3c, and an engaging shaft part 4 having a spherical engaging part 8 from the center part of the lower surface of the head part to the tip part. Is installed vertically.

This male member is fixed by inserting the head 3 into a keyhole-shaped mounting hole a consisting of two large and small holes to be preliminarily drilled in a panel A such as a trim board. When mounting in the large mounting hole a, first pass the small flange 3b of the head through the large diameter hole, and when the large flange 3a abuts the surface of the panel, move the head to the small diameter hole and 3b is brought into contact with the other surface of the panel, and the panel A is sandwiched between the large and small flanges to fix it. This fastening is according to the same method as carried out in the previously proposed fastener.

On the other hand, the engagement body portion 6 of the female member 2 is formed in a bag shape having one end opened, and the mounting flange 5 is extended from the outer peripheral surface of the opening portion.

The engagement body portion 6 has a hollow portion having a size capable of enclosing the engagement shaft portion 4 of the male member, and has a spherical cavity shape which engages with an engagement portion 8 provided at a tip end portion of the shaft portion 4 at a bottom portion thereof. An engagement receiving portion 9 is provided, and mounting bulges 10 and 10 are provided on the outer peripheral surface of the body in a back shape, and the engagement pieces 7 extend from the upper edge of the bulge. .

The mounting bulging portion 10 is provided in such a shape that the outer peripheral surface of the engaging body portion is expanded substantially in the middle in the longitudinal direction, and the hollow portion 11 is provided by vertically penetrating the thick wall portion of the engaging body portion. It is shaped like a bridge that extends in the circumferential direction.

The engaging piece 7 is extended from the upper edge of the bridge-shaped mounting bulge 10 so as to stand upward, and the tip protruding in a tongue shape is made to face directly below the mounting flange 5, and the outside of the tip. Is bulged to provide an engaging portion 7a.

Incidentally, the female member 2 shown here is formed to have a substantially large outer diameter by providing the mounting bulge portion 10 on the outside of the engagement body portion 6, and this outer diameter is formed in the mounting hole of the panel B described later. It is adapted to the diameter of b so that it will fit without rattling when inserted.

In the fastener of the present invention according to the above-described configuration, first, one male member 1 is attached to the keyhole-shaped mounting hole a formed in the panel A by utilizing the head 3 of the male member 1, and the other female member 2 is attached to the other male member 1. It is pushed into a circular mounting hole b formed in the panel B, and at the same time as the mounting bulge is passed, the engaging piece 7 extending from this upper edge portion is bent inward to pass through the hole, and the engaging The part 7a is mounted by engaging with the edge on the opposite side of the panel, and then the engaging shaft part 4 of the male member is pushed into the engaging body part with the panel members being brought into contact with each other. The panels 8 can be fixed to each other by fitting the panels 8 to each other by fitting them into the engagement receiving portions 9. When the panel A is to be peeled off when necessary, the head 3 can be opened by prying it apart so that the panel A can be peeled off.
As a result of the engagement shaft portion 4 pulling out the engagement portion 8 at the tip from the engagement receiving portion 9 by pulling and releasing the connection, the panel A can be peeled off while leaving the female member 2 on the panel B.

Needless to say, the panel A can be attached again to the other panel after being peeled off, and the coupling shaft portion can be pushed into the engaging body portion of the female member so as to be fixed again.

EFFECTS OF THE INVENTION The present invention is configured as described above, and when both the male and female members are mounted on the panel, the engaging shaft portion is pushed into the engaging body portion to achieve the coupling, While they can be fastened to each other, when the male member is pulled by pulling off one panel and the engaging shaft portion is pulled out from the engaging body portion, the engaging portion is disengaged from the engaging receiving portion and the female member is You can tear off one of these pulses while leaving it on the panel.

Further, in the present invention, the tongue-shaped engaging piece 7 is extended upward through the mounting bulge 10 provided on the outer peripheral surface of the engaging body as described above, so that the panel mounting When mounted in the hole b, the engaging piece 7 independently engages with the edge of the flexing mounting hole without affecting the engaging body, and with the aid of the flexing action of the mounting bulge 10. Therefore, it can be easily inserted and mounted as compared with the conventional structure in which the diameter is reduced and deformed together with the engagement body.

Since the engaging piece is independently bent and engaged in this way, and at the same time the structure is raised, the engaging force with respect to the edge of the mounting hole of the panel is strong, and a constant engaging force is always obtained, which is stable. There is an advantage that can be expected to be installed.

Further, as described above, since the engaging piece in the present invention flexes independently of the engaging body portion and engages with the edge of the hole, it is fitted into the engaging body portion and joined to the engaging body portion. Therefore, the coupling between the engaging body and the engaging shaft is stable with a constant coupling force at all times, and is also affected by the hole diameter of the mounting hole even when mounted on the panel. Without this, the panel can be peeled off by releasing the coupling between the engagement receiving portion and the engagement portion with a required removal force.

In the above embodiment, the male member 1 and the female member 2 are mounted on the panels A and B, respectively, and the two members are joined together in accordance with the work of contacting the panels. Is preliminarily coupled and mounted in the mounting hole a of one panel using the head of the male member, and then toward the mounting hole b of the other panel opened corresponding to this mounting hole a. When the female members 2 that have been combined are pushed in and attached, the panels can be fixed at the same time.

This method of preliminarily joining both members is advantageous not only in terms of product management, but also by pressing one panel A, many female members can be attached to the other panel, and In case of mounting in a narrow work space, it can be mounted at the same time as pressing the panel without putting hands in a narrow space, which is very advantageous in terms of work. In addition, in the case of mounting by this method, when the engaging body 6 which has received the engaging shaft portion 4 passes through the mounting hole b, only the engaging piece bends without being affected by the engaging piece of the present invention. Because of the engaged structure, the female member can be mounted extremely smoothly, which is the same as the case where the female member is mounted alone.

By the way, as described in the embodiment, when the mounting bulging portion 10 is formed in a bridge shape and the hollow portion 11 is formed between the mounting bulging portion 10 and the outer peripheral surface of the engaging body portion 6, the mounting bulging portion is provided with flexibility. The insertion of the engaging piece 7 at the time of mounting is further facilitated, and the distortion caused by the bending of the engaging piece is absorbed by the mounting bulging portion, so that the engaging force of the engaging body portion 6 with respect to the engaging shaft portion is increased. Will be more stable.

Further, in this manner, the engaging body can receive and connect the engaging shaft regardless of the engagement of the engaging piece, and is not affected by the mounting hole of the panel, so that the engaging shaft is exclusively used in manufacturing. It is only necessary to consider the dimensions, and therefore, there is an advantage that the manufacturability is excellent.

In the embodiment of the present invention, two mounting bulges are provided and the engaging pieces are respectively provided as a pair in the above-mentioned embodiment, but it is possible to prevent the number from increasing to three or four. is not.

However, in this case, if a thick portion is provided between the mounting bulging portions and is aligned with the outer peripheral surface of the mounting bulging portion, and the protrusion 12 is provided from this thick portion toward the lower surface of the mounting flange 5, This is convenient because a stable mounting that does not laterally shift when mounted in the mounting hole b of the panel can be obtained.

Further, since the hollow portion 11 which makes the mounting bulging portion 10 into a bridge shape is also the retracting space of the engaging piece 7, the engaging portion 7a at the tip of the engaging piece 7 is formed in a space that can be sufficiently retracted when passing through the mounting hole. There is a need to. It should be noted that this hollow portion also serves as a space for withdrawing the molding die that forms the engagement piece 7 during manufacturing, and is effectively utilized in obtaining a product with high dimensional accuracy.

By the way, as described above, the male and female members of the fastener of the present invention are individually molded by the plastic material, but when the material is polyethylene resin, it is extremely unlikely to be affected by the temperature change in actual use. Since it is excellent in stability, it is convenient when it is used as a fastener for fixing parts of an automobile, which are exposed to the outside temperature.

[Brief description of drawings]

FIG. 1 is a front view of a central longitudinal section showing a state in which two panels are fixedly attached, FIG. 2 is a partial sectional front view in a separated state before coupling, and FIG. 3 is a side view of a female member. FIG. 4 is a bottom view, and FIG. 5 is a sectional view taken along the line VV in FIG. 1 ... Male member, 2 ... Female member, 3 ... Head part, 4 ... Engaging shaft part, 5
... Mounting flange, 6 ... Engaging body, 7 ... Engaging piece, 8 ... Engaging section, 9 ... Engaging receiving section, 10 ... Mounting bulging section, A, B ... Panel,
a, b ... Mounting holes

Claims (1)

[Claims] 1. A male member to be attached to one panel and a female member to be attached to the other panel, wherein the male member is a head to be fitted in a mounting hole of the panel, and is hung vertically from a lower surface of the head. On the other hand, the female member is provided with an engaging body portion having a hollow interior extending below a mounting flange that restricts an insertion amount into the mounting hole of the panel, and a locking means for the mounting hole. In the fastener in which the panels are fixed to each other by fitting and joining the two members in a contacting manner, the female member is thickened on the outer peripheral surface of the engaging body portion in the middle of its length. A bridge-shaped mounting bulge is formed in the circumferential direction by forming a hollow portion vertically passing through the thick portion, and a tongue-shaped engagement is provided from an upper edge portion of the mounting bulge facing the lower surface of the mounting flange. A fastener for fastening two panels in contact with each other, which is characterized by extending a joint piece upright. .