JPH0422096Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a fastener device comprising a male member and a female member.

<Prior Art> This type of fastener device is disclosed in, for example, Japanese Utility Model Publication No. 14737/1983, which was previously proposed by the applicant, and the male and female members are usually made of resin molded bodies. The attached article is fixed to the panel by engaging the male member protruding from the attachment surface of the attached article with the female member attached to the panel, which is the attached member.

In this fastener device, although various improvements have been made to the engagement structure of both members, basically all of them have an enlarged head at the protruding tip of the leg portion of the male member, as exemplified in the above-mentioned publication. , the male member is inserted into the female member by pushing its head between a pair of elastic legs provided at the protruding end of the cylinder body of the female member, and elastically contracting and expanding the diameter of the elastic legs. It has a structure that prevents it from coming out.

Further, the female member has a locking pawl on the outer periphery of the cylinder body, and this locking pawl elastically contracts and expands in diameter when the cylinder body is inserted into the mounting hole of the panel. In this case, the female member is pushed into the mounting hole of the panel and temporarily fixed before being combined with the male member. Then, by pushing the male member into the cylinder body, both members are joined together, and the diameter of the cylinder body is expanded by the male member pushed into the cylinder body, and the diameter stopper is surely engaged with the mounting hole and removed. be stopped.

The above-mentioned fastener device is, for example,
- Unlike the fasteners made of bolts and tightening nuts as exemplified in Publication No. 1093, it does not appear at all in the external appearance when the attached article is attached, and moreover, the female member is attached to the surface of the panel, which is the member to be attached. Used when fixing operation can only be performed from the side.

In addition, in the case of a fastener like the one described in the same publication, the tightening nut must be fixed in advance to the panel, which is the member to which it is attached, and also because it is usually fixed to the back side of the panel. The fixing structure of the tightening nut is not limited to the above-mentioned female member which must be inserted into the mounting hole of the panel from the surface side, and unlike the above-mentioned male member, the bolt is inserted from the surface side of the mounting object. It is inserted through a mounting hole provided in the holder and is prevented from coming out by the tightening nut.

《Problems to be solved by the invention》 In conventional fastener devices, resin elasticity is used to prevent the male and female members from coming off each other.
It is easy to operate since it is only necessary to push the male member into the female member. However, since the male member is pushed between the elastic legs of the female member and is prevented from coming out, it is easy to separate from the female member when, for example, an external force in the pulling direction is applied to the male member, and both members However, any attempt to improve the bonding strength between the two would naturally have its limits due to the constraints of using resin elasticity.

In addition, the engagement structure of the female member with the mounting hole of the panel is performed by a locking pawl provided on the outer periphery of the cylinder body, but the diameter of this locking pawl is expanded by pushing the male member into the cylinder body. It will be done. Therefore, in the installation or assembly work, it is necessary to first insert the female member into the mounting hole of the panel and install it, and then push the male member into the cylindrical body. However, for example, when considering parts management, transportation, and assembly processes, it may be beneficial in terms of work efficiency to assemble both parts in advance, especially when the attached item is a vehicle. It has been found that the efficiency of assembly work can be greatly improved in large cases such as garnishes.

Therefore, the purpose of the present invention was made in view of the above-mentioned circumstances, and it is possible to improve the bonding force between both members so that they will not separate even when subjected to impact, etc., and to provide a method in which the female member is pre-assembled to the male member. An object of the present invention is to provide a fastener device that can be used.

<Means for Solving the Problems> In order to achieve the above object, the present invention comprises a male member and a female member, and the male member is a leg portion integrally provided on the mounting surface side of the attached article. , having a head integrally formed with the protruding tip of the leg, and having a flanged cylinder body in which the female member is inserted into a mounting hole of the panel, and the head is inserted into the cylinder body. A fastener device that fixes the attachment article to the panel by elastically engaging the cylinder body with the attachment hole, and the head of the male member is formed in a non-circular shape. and the female member is provided at the protruding tip of the cylinder body, and has an engagement step formed in a shape corresponding to the head, and is provided in an overhanging state on the outer peripheral part of the cylinder body, an engaging piece that contracts in diameter into the cylinder body during the process of inserting the cylinder body into the mounting hole, and expands in diameter to the original state when insertion is completed, and engages the head from within the cylinder body; The male member or the female member is rotated approximately 90 degrees while protruding from the engagement step, and the head is intersected with the engagement step and prevented from coming out, thereby integrating the female member with the male member. After the cylinder body is inserted into the mounting hole, the cylinder body can be engaged by pushing it into the mounting hole.

<<Operation>> According to the above structure, the legs of both members are inserted into the cylinder body and the heads protrude into the engagement stepped portion of the cylinder body, and the female member is rotated approximately 90 degrees with respect to the male member, for example. It is prevented from coming out by moving it. This retention is not achieved by utilizing the elasticity of the resin, but by the state in which the head crosses the engagement step, that is, by the relative positional relationship between the two members, resulting in a stable and strong bonding force.

In addition, the diameter of the cylinder body is reduced in the process of inserting the cylinder body into the mounting hole of the panel, and when the insertion is completed, the diameter expands to the original state to prevent the female member from coming out. Even when assembled into an integrated state, it is engaged and fixed to the panel with the same strength.
Therefore, for example, by assembling the female member in advance to the male member protruding from the attachment article, it is possible to improve the ease of assembly.

<<Example>> Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the fastener device of the present invention, and FIG. 2 shows the device in use.

In these figures, a fastener device 1 includes a male member 2 protruding from an attachment article 4 made of a resin molded body.
and a female member 3 fixed to a panel 5 as a member to be attached, and the attached article 4 is fixed to the panel 5 by assembling both members 2 and 3.

The male member 2 includes a leg portion 21 integrally protruding from the mounting surface of the attachment article 4, a head portion 22 provided at the protruding tip of the leg portion 21, and a pair of engagement portions provided on both end surfaces of the head portion 22. A mating protrusion 23 is provided.

The leg portion 21 is approximately cylindrical, and has a somewhat larger diameter at its base and a head portion 22 at its protruding tip.

The head 22 has a substantially U-shaped cross section, and is integrated with the tip of the leg 21 inserted into the U-shape. The engaging protrusions 23 are provided on the same line at both ends of the U-shape of the head 22.

Similarly to the male member 2, the female member 3 is made of a resin molded body, and has a cylindrical body 31 through which the leg portions 21 are inserted.
A flange 32 provided on the outer periphery of one end of the cylinder body 31, a locking piece 33 for fixing the panel, and a locking groove 34 corresponding to the engagement protrusion 23 are provided.

The total length of the cylinder body 31 is set shorter than the leg portion 21, and as shown in FIG. The head 22 is projected from the stepped portion 31b. The engagement stepped portion 31b of the cylinder body 31 has a rectangular cross section corresponding to the head 22, and a locking groove 34 is formed in the middle of its long side.

Furthermore, a substantially U-shaped notch 31c is formed on both side walls of the cylinder body 31 and extends through the flange 32, and a locking piece 33 is integrally provided inside the notch 31c. . In other words, the locking piece 33 protrudes obliquely upward from the side of the cylinder body 31, and when the cylinder body 31 is inserted into the mounting hole 5a formed in the panel 5, the locking piece 33 elastically reduces the diameter of the mounting hole 5a. The diameter expands or returns to its original state when it passes. As a result, the edge of the attachment hole 5a is pressed between the flange 32 and the tip of the locking piece 33, and the female member 3 is engaged and fixed in the attachment hole 5a of the panel 5 (see FIG. 2). Such an engagement structure of the female member 3 is performed independently of the male member 2.

The fastener device 1 having the above configuration can be operated by assembling the male member 2 to the female member 3 after the female member 3 is fixed to the panel 5, or conversely, by assembling the female member 3 to the male member 2 in advance and then performing the same operation. Connect the female member 3 to the mounting hole 5a of the panel 5.
It may also be operated in a fixed manner.

In the latter case, for example, the male member 2 is attached to the mounting part.
Since the female member 3 and the female member 3 are assembled, parts management, transportation, and assembly processes can often be streamlined. Furthermore, when the article to be attached is large, such as a car garnish, the efficiency of the assembly work can be greatly improved.

To assemble both members 2 and 3, as shown in FIG.
1, and rotates the female member 3 by approximately 90 degrees with respect to the male member 2, for example. In this rotating state, the engaging protrusion 23 is resiliently engaged with the locking groove 34 as shown in FIG.
Since movement in the orthogonal direction is prevented, both members 2 and 3 will not come off even if an impact is applied, resulting in a strong connection.

In this embodiment, the male member 2 is integrally protruded from the attachment article 4, but the male member 2 may be formed independently and engaged and held on the attachment surface of the attachment article 4.

<<Effects of the invention>> As explained above, according to the fastener device of the present invention, the engagement of the male and female members is achieved by the relative positional relationship between the engagement step portion and the head, so that the fastener device of the present invention does not have the same effect as the conventional one. The bonding strength can be greatly improved compared to those using resin elasticity, and it is difficult to separate even if an external force is applied to the male member in the direction opposite to the insertion direction, and it is stable because it is not affected by resin properties or temperature changes. is also excellent.

Moreover, the female member is engaged and fixed to the panel with the same strength even when it is alone or assembled with the male member, so for example, the female member may be assembled in advance to the male member protruding from the attachment item. This also makes it possible to greatly improve parts management, transportation, and assembly work efficiency.

Therefore, in the present invention, in addition to the engagement force between the male and female members, after the female member is assembled to the male member in advance,
Since the female member can be pushed into the hole in the panel and engaged, the fixing strength and assembly workability can be greatly improved, especially when the article to be attached is a large molded object.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a fastener device shown as an embodiment of the present invention, Fig. 2 is a sectional view showing the device in use, and Fig. 3 is a perspective view showing the state in which the male member is inserted into the female member. be. DESCRIPTION OF SYMBOLS 1... Fastener device, 2... Male member, 3... Female member, 21... Leg portion, 22... Head, 23... Engagement protrusion, 31... Cylinder body, 31b... Engagement stepped portion ,
34...Latching groove.

Claims (1)

[Claims for Utility Model Registration] (1) A leg portion consisting of a male member and a female member, with the male member integrally protruding from the mounting surface side of the attached article;
The female member has a head integrally formed with the protruding tip of the leg, and the female member has a flanged cylindrical body that is inserted into a mounting hole of the panel, and the head is inserted into the cylindrical body. In addition to preventing it from coming out,
A fastener device for fixing the attached article to the panel by elastically engaging a cylinder body with the attachment hole, wherein the head of the male member is formed in a non-circular shape, and the head of the male member is formed in a non-circular shape, and the head of the female member is provided at the protruding tip of the cylinder body and formed in a shape corresponding to the head, and is provided in an overhanging state on the outer periphery of the cylinder body and extends from the cylinder body to the mounting hole. an engaging piece that contracts in diameter into the cylinder body during the process of inserting the main body and expands in diameter to the original state when the insertion is completed, and the head protrudes from the cylinder body to the engagement stepped portion; In this state, the male member or the female member is rotated approximately 90 degrees, and the head is secured to the engaging stepped portion in a crossed state, so that the female member is integrated with the male member, and then the above-mentioned attachment is performed. A fastener device characterized in that it can be engaged by pushing a cylinder body into a hole. (2) An engaging protrusion is provided on the head, and a locking groove that engages with the engaging protrusion is formed in the engaging step, so that the engaging protrusion springs into the locking groove in the rotating state. The fastener device according to claim 1, wherein the fastener device is configured to be engaged with and prevented from rotating.