JPH0614514U - Two-object mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a two-object mounting structure that can reduce the need to change the opening width of the bottleneck portion of the fastener setting hole of the fastener seat in accordance with the diameter of the fastener neck. . A two-object mounting structure in which a plastic mounting part 11 is mounted on a main body member 17 having a mounting hole 15 through a separate fixture 13. The fastener 13 is
The locking base portion 19 and the fixed portion 21 are connected via a neck portion 23. The back surface of the mounting component 11 is provided with a bag-shaped fastener seat 29 into which the locking base 19 of the fastener 13 can be inserted from the side, and the ceiling wall 31 of the fastener seat 29 has a fastener setting hole 3
2, the fastener setting hole 32 is provided in the fastener neck portion 23.
A fitting portion 35 into which the fastener neck portion 23 fits, and a bottleneck portion 37 having an opening width smaller than that of the fastener neck portion 23. The top wall 31 or the side wall 3 of the fastener seat 29
A part of 9 is provided with meat-thickening portions 41 and 41A for facilitating elastic expansion of the bottleneck portion 37.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-object mounting structure in which a plastic mounting part is mounted on a main body member having a mounting hole through a separate fastener. In particular, it is a suitable device for attaching plastic attachment parts such as scarf plates and moldings to the vehicle body via fasteners such as plastic fasteners.

Here, the case where the molding (trim) is attached to the vehicle body via the fastener is mainly described as an example, but the present invention is not limited to this. For example, the fastener includes a locking base portion. It may also be a bolt or the like.

[0003]

[Prior art]

 As a conventional example of a two-object mounting structure of the above type, for example, there is one as shown in FIGS.

When a plastic trim (plastic attachment part) 11 is attached to a vehicle body (main body member) 17 in which a locking hole (attachment hole) 15 is formed via a fastener (separate fastener) 13, Take for example.

Here, in the fastener 13, a locking base portion 19 and a locking head portion (fixed portion) 21 inserted and fixed in the locking hole 15 are connected via a neck portion 23. The fastener 13 has an elastic wing portion 27 that clamps the ceiling wall 31 of the fastener seat 13 in cooperation with the locking base portion 19 between the neck portion 23 and the locking head portion 21 for mounting stability. It is formed in.

A bag-shaped fastener seat (fastener seat) 29 into which the locking base 19 of the fastener 13 can be inserted from the side is provided on the back surface of the plastic trim 11. The ceiling wall 31 of the fastener seat 29 is provided with a fastener set hole 32, and the fastener set hole 32 has an introduction portion 33 for introducing the fastener neck portion 23, a fitting portion portion 33 for fitting the fastener neck portion 23, and an introduction portion. It is composed of a narrow portion 37 having an opening width smaller than the diameter of the fastener neck portion 23 between the fitting portion 35 and the fitting portion 35. Here, the introduction portion 33 of the fastener set hole 32 has a tapered shape that widens from the bottle neck portion 37 toward the open rear end side so that the fastener neck portion 23 can be easily introduced.

The plastic trim 11 is usually made of a plastic material such as ABS, PP, PVC (including a filler), and the fastener 13 is made of a plastic material such as nylon or polyacetal. Manufactured by injection molding.

The usage mode of the two-object mounting structure configured as described above is as follows.

The fastener 13 is fixed to the plastic trim 11 by introducing the neck portion 23 of the fastener 13 from the introduction portion 33 formed on the ceiling wall 31 of the fastener seat 29 to the fitting portion 35. Then, the plastic trim 11 can be attached to the vehicle body 17 by forcibly pushing the engaging head portion 21 of the fastener 13 into the engaging hole 15 formed in the vehicle body 17.

When the fastener 13 is attached to the plastic trim 11, when the fastener neck portion 23 passes through the bottle neck portion 37 of the fastener set hole 32, the bottle neck portion 33 is forcibly expanded. ,

[0011]

[Problems to be solved by the device]

 Even with the same plastic trim 11, the type of fastener may change depending on the vehicle type and the types of parts and mating members. The diameter of the fastener neck portion 13 usually slightly differs depending on the type of fastener.

At this time, in the opening width dimension of the bottleneck portion 37 of the fastener set hole 32, the allowable width of the minus amount with respect to the diameter of the fastener neck portion 23 is extremely narrow. This is because it is necessary to strike a balance between the ease of attachment of the fastener 13 to the fastener seat 29 of the plastic trim 11 and the anti-separation property after attachment.

Therefore, every time the type of fastener is changed, the opening width of the bottleneck portion 37 of the fastener set hole 32 of the fastener seat 29 needs to be changed (including fine adjustment) by machining and modifying the mold. was there.

In view of the above, the present invention reduces the need to change the opening width of the bottleneck portion of the fastener setting hole of the fastener seat (fastener seat) in accordance with the diameter of the fastener (fastener) neck portion. It is an object of the present invention to provide a two-object mounting structure that can be used.

[0015]

[Means for Solving the Problems]

 This invention solves the said subject by the following structures.

A two-object mounting structure in which a plastic attachment part is attached to a main body member in which an attachment hole is formed through a separate fastener, and the fastener is a locking base and an attachment hole. The fixing part to be inserted and fixed is connected via the neck part, and the back surface of the mounting part is provided with a bag-shaped fixing part seat into which the locking base part of the fixing part can be inserted from the side. The ceiling wall of the fastener seat is provided with a fastener setting hole, and the fastener setting hole includes an introducing portion for introducing the fastener neck portion, a fitting portion for fitting the fastener neck portion, and an introducing portion and a fitting portion. Between the fastener and the neck of the fastener with a narrower opening than the neck, a meat-thief part that facilitates elastic expansion of the bottleneck is formed on a part of the top wall or side wall of the fastener seat. There is.

[0017]

【Example】

 Next, the present invention will be described in detail based on embodiments. The same parts as those in the conventional example are designated by the same reference numerals, and the description thereof will be omitted in whole or in part.

(1) First, of the constitutions of the present embodiment, the constitution (presupposed constitution) overlapping with the conventional example will be outlined.

The plastic trim 11 is attached via the fastener 13 to the vehicle body 17 in which the locking hole 15 is formed.

Here, in the fastener 13, a locking base portion 19 and a locking head portion 21 inserted and fixed in the locking hole 15 are connected via a neck portion 23.

A bag-shaped fastener seat 29 into which the locking base portion 19 of the fastener 13 can be inserted from the side is provided on the back surface of the plastic trim.

The ceiling wall 31 of the fastener seat 29 is provided with fastener set holes 32. The fastener setting hole 32 is a narrow portion having a width smaller than that of the introducing portion 33 for introducing the fastener neck portion 23, the fitting portion 33 for fitting the neck portion 23, and the neck portion 23 between the introducing portion 33 and the fitting portion 35. 37 and 37.

(2) In the two-object mounting structure having the above-described configuration, in this embodiment, a portion of the ceiling wall 31 or the side wall 39 of the fastener seat 29 facilitates elastic expansion of the bottleneck portion 37 to facilitate meat expansion. Portions 41 and 41A are formed.

Specifically, as shown in FIG. 1, closed meat stealing holes 41, 41 are formed along both sides of the fastener set hole 32 of the ceiling wall 31. The meat stealing holes 41, 41 have a maximum opening width on both sides of the bottleneck portion 37. It should be noted that these meat stealing holes 41, 41 do not necessarily have to be penetrated, and a slender book meat portion may remain.

In another example shown in FIG. 2, slits (meat stealing portions) 41A, 41A are formed from the opening end side of the fastener set hole 32 of the ceiling wall 31 along both sides.

In the above description, the meat stowage portions 41, 41A are formed on both sides of the fastener set hole 32, but they may be formed on one side.

(3) The mode of use of the above embodiment is the same as that of the above conventional example. Further, even if the neck diameter of the fastener is changed (especially on the large diameter side), the meat-thickening portions 41 and 41A for elastically expanding the bottleneck portion 37 of the fastener setting hole 32 are formed. The bottleneck portion 37 is easily elastically expanded so that the fastener 13 can be attached to the fastener seat 13.

In FIG. 1, the material is PP, the thickness of the ceiling wall 31 is 2.5 mm, the opening width of the narrow portion 37 is 4.8 mm, the inner diameter of the fitting portion 35 is 5.8 mm, and the distance to the narrow portion 37 is 2 mm. When the meat-thickness hole 41 was formed, the fastener could be attached to the trim up to a diameter 23 of the fastener neck of 5.50 to 5.80 mm, while the meat-thief hole was not formed. The fasteners could only be fitted to the trim with diameters of 23 up to 5.50-5.65 mm.

[0029]

[Operation and effect of the device]

 The two-object mounting structure of the present invention has the following actions and effects due to the above configuration.

Even if the fastener neck diameter is changed (especially on the large diameter side), since the meat stealing portions are formed on both sides of the bottleneck portion, it is possible to easily elastically expand and attach the fastener to the fastener seat. Becomes Therefore, if the width of the bottleneck part of the fastener set hole is set small, the bottleneck part width of the fastener set hole of the fastener seat (fastener seat) can be changed according to the neck diameter of the fastener (fastener). Can reduce the need to That is, unlike the conventional case, it is not necessary to change the width of the bottleneck portion 37 of the fastener set hole 32 of the fastener seat by modifying the mold every time the fastener type is changed.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an example of a fastener seat of a plastic trim in a two-object mounting structure of the present invention,

FIG. 2 is a perspective view of an essential part showing another example of the same.

FIG. 3 is a perspective view of an essential part showing an example of a fastener seat of plastic trim in a conventional two-object mounting structure;

FIG. 4 is a cross-sectional view showing the usage state of FIG.

[Explanation of symbols]

11 plastic trim (plastic attachment part) 13 fastener (fastener) 15 locking hole (mounting hole) 17 vehicle body (main body member) 19 locking base 21 locking head (fixing part) 23 fastener neck (fixing tool neck) 29 Fastener seat (fastener seat) 31 Top wall of fastener seat 32 Fastener set hole (fastener set hole) 33 Set hole introduction portion 35 Set hole fitting portion 37 Set bottleneck portion 39 Fastener seat side wall 41 Meat stealing Hole (meat stealing part) 41A Slit (meat stealing part)

Claims (1)

[Scope of utility model registration request] 1. A two-object mounting structure in which a plastic mounting part is mounted on a main body member having a mounting hole through a separate fastener, wherein the fastener is configured to engage the locking base portion. , A fixing portion that is inserted and fixed in the mounting hole is connected via a neck portion, and a bag-shaped fixing portion into which a locking base portion of the fixing member can be laterally inserted on the back surface of the mounting component. A fixture seat, a ceiling wall of the fixture seat has a fixture setting hole, and the fixture setting hole introduces a fastener neck portion, a fitting portion with which the fastener neck portion is fitted, and In a configuration consisting of a bottleneck portion having an opening width smaller than the fastener neck portion between the introduction portion and the fitting portion, it is possible to easily elastically expand the bottleneck portion on a top wall or a part of the side wall of the fastener seat. A structure for mounting two objects, characterized in that a meat stealing portion is formed.