JP3684255B2 - Parts mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a mounting structure for attaching a part such as an automobile side molding to a predetermined panel via a clip.
[0002]
[Prior art]
As a conventional mounting structure for this type of component, there is one shown in Japanese Utility Model Laid-Open No. 5-5603.
The conventional mounting structure is not specifically shown, but for a resin part such as a side molding, a rectangular holding structure in which one side is opened on the back surface and three sides are closed by both side walls and a back wall. A required number of seats are integrally protruded, and a holding piece that is bent inwardly is extended to each edge of both side walls defining the holding seat, and the opening of each of the opposing holding pieces is close to the opening. A pair of lock claws protruding further inward is formed on the part.
[0003]
In addition, the clip is made of a synthetic resin material and has a rectangular base plate inserted from the opening into the holding seat and a hook-shaped locking leg that engages with a mounting hole of the panel. The trapezoidal portion is integrally attached to the base portion of the column that is molded and connects the base plate and the locking leg.
The trapezoidal part is set so that the dimension of the front end side of the trapezoid is smaller than the interval width of the pair of lock claws, and the dimension of the rear end side is larger than the interval width of the pair of lock claws. It is set.
[0004]
And when attaching a part to a panel, if the base plate of a clip is inserted into the holding seat from the opening while the front end side of the trapezoidal portion faces the opening of the holding seat, the trapezoidal portion The front end side can pass between the pair of lock claws without any resistance, but the rear end side of the trapezoidal portion abuts against the lock claws and is prevented from passing therethrough.
[0005]
Therefore, when the base plate of the clip is further forced into the holding seat at such time, the rear end side of the trapezoidal part obtains the outward deflection of both side walls defining the holding seat, and a pair of Since the lock pawls are passed through while forcibly expanding, and after passing, they are locked to the inner edge of each lock pawl, this prevents the clip from coming off from the holding seat and at the same time The plate itself is securely clamped between the gripping pieces extending on both side walls defining the holding seat and the back surface of the component.
Therefore, the component can be attached to the panel by gripping the component while elastically engaging the locking leg, which has the shape of a clip, with a mounting hole provided in advance on the panel side.
[0006]
[Problems to be solved by the invention]
However, under the conventional mounting structure, in order to prevent the clip from coming off from the holding seat, a trapezoidal part is provided integrally on the clip side, and while utilizing the dimensional difference between the front and rear ends, The base plate of the clip against the inside of the holding seat, even if a tapered guide surface is provided on the outer edge side of the lock claw, for example, because the rear edge is forcedly locked to the pair of lock claws. There was a dislike that the insertion work would be difficult. In particular, this phenomenon requires a considerably large force when both side walls connected to the lock pawls of the holding seat are thick, so that the workability is more difficult. Become.
For this reason, if the both side walls connected to the lock claw are made thin so as to bend easily, the lock claw can be pushed and expanded relatively easily, so the insertion work may be improved. There is a possibility that the function of preventing the clip from coming off will be lowered. This is also true for the hardness of the holding seat molding material itself.
[0007]
[Means for Solving the Problems]
The present invention was developed in order to effectively solve the problems of the conventional mounting structure, and the invention according to claim 1 is characterized in that one side is opened on the back side of the part and three sides are closed by both side walls and the back wall. In a mounting structure for mounting the above components to a panel using a clip provided with a base plate inserted into the holding seat and a locking leg that engages with a mounting hole of the panel. A holding wall having a central notch that is open toward the opening is formed in a continuous state at the edges of both side walls and the back wall that define the inner wall, and inwardly toward the opening portion of both side walls that define the holding seat. A pair of lock claws projecting from each other, and a tip is extended outward from an interval width of the pair of lock claws on one end side of a support column connecting the base plate of the clip and the locking leg. A pair of resilience that fits almost like the shape of the central notch The and laterally disposed, at the time of inserting the base plate of the clip into the holding seat, adopting a configuration in which locked to the locking pawl to correspond the tips of the pair of elastic arms.
The invention according to claim 2 is based on the premise of claim 1 and employs a configuration in which the width of the other end side of the base plate is slightly increased.
[0008]
Therefore, under the present invention, when the base plate of the clip is inserted into the holding seat of the component, for example, the tips of the pair of elastic arms widen outwardly beyond the distance between the pair of lock claws. However, in the process of passing between the pair of lock claws, it is possible to allow each elastic arm to bend and pass inward using its own elasticity. In addition, the base plate can be inserted smoothly and easily without being affected by the hardness of the molding material.
Moreover, after passing between the lock claws, the pair of elastic arms return to the original shape, and their tips are firmly locked to the corresponding lock claws, so that the clip can be securely detached from the holding seat. Will be prevented.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, if the present invention is described in detail based on an embodiment shown in the drawings, the mounting structure according to the embodiment also has an opening 2a on the back side of the resin component 1 as shown in FIG. A holding seat 2 that is closed on both sides by the both side walls 2b and the back wall 2c is provided so as to obtain a state in which the base plate 12 of the resin clip 11 is inserted into the holding seat 2 from the opening 2a. Although the part 1 is attached to the panel P by engaging the hook-shaped locking leg 13 with a mounting hole H of the panel P described later, the feature is that the following configuration is adopted. is there.
[0010]
First, for the component 1, the required number of the holding seats 2 are integrally provided on the back surface, but open toward the opening 2a with respect to the edges of the side walls 2b and the back wall 2c. The holding wall 3 having the central notch 4 formed in a continuous state is formed in a continuous manner to positively impart a box shape to the holding seat 2 itself, while the holding wall 3 located near the opening 2a of the side walls 2b A pair of lock claws 5 projecting inward at the edge are formed integrally, and the outer ends of the respective lock claws 5 are configured as tapered guide surfaces 5a that spread outward.
[0011]
Further, as shown in FIG. 2, the clip 11 has a pair of distal ends near the base of one end of the column 14 having a rectangular cross section connecting the base plate 12 and the hook-shaped locking leg 13. A pair of elastic arms 15 that are expanded outward from the width of the gap between the lock claws 5 are laterally laid in a plane-symmetrical relationship, and the tip step 16 of each elastic arm 15 is connected to the pair of lock claws. 5 is configured to be engaged with the inner end edge 5b.
Therefore, under the present embodiment, the central notch 4 of the holding wall 3 has a shape substantially similar to the outline of the pair of elastic arms 15, while the base plate 12 of the clip 11 is loosely placed in the holding seat 2. However, in order to restrict the amount of insertion into the holding seat 2, the width on the other end side of the base plate 12 is slightly increased.
[0012]
In the figure, reference numeral 17 denotes a pair of backlash preventing pieces formed on one end side of the support column 14 above the pair of elastic arms 15, and the hook-shaped locking legs 13 are engaged with the mounting holes H of the panel P. At the time of wearing, it comes into contact with the peripheral surface of the mounting hole H together with the other end surface of the support column 14 to prevent rattling in each direction of the clip 11 in the engaged state.
[0013]
Therefore, when the component 1 is attached to the panel P using the clip 11 having such a configuration, the base plate of the clip 11 is firstly inserted into each holding seat 2 of the component 1 from its opening 2a as in the prior art. 12 is inserted from one end side of the support column 14, but as the base plate 12 is inserted into the holding seat 2, the guide of the taper guide surface 5a of each lock claw 5 is obtained and expanded outward. The pair of elastic arms 15 also tries to pass between the pair of lock claws 5.
[0014]
However, in this passage, even if the tips of the pair of elastic arms 15 are widened outwardly beyond the width of the gap between the lock claws 5, in the process of passing between the lock claws 5, The arm 15 is automatically allowed to pass while being centered by bending inward using its own elasticity, so that the arm 15 is automatically allowed to fit in the central notch 4 of the holding wall 3. Insertion of the base plate 12 into the holding seat 2 can be performed smoothly and easily.
[0015]
Then, when completely passing between the lock claws 5, as shown in FIG. 3, the pair of elastic arms 15 are restored to the original shape, and the respective front end step portions 16 are moved to the inner end edges of the corresponding lock claws 5. Since it is firmly locked to 5b, it is possible to reliably prevent the clip 11 from coming off from the holding seat 2. In this case, even if a dimensional error occurs, the dimensional error can be effectively absorbed, so there is no fear of being adversely affected by the dimensional error.
[0016]
In this state, the base plate 12 itself of the clip 11 is surrounded by the side walls 2b and the back wall 2c, while the inner surface of the holding wall 3 and the bottom surface of the holding seat 2 (in this embodiment, the component 1 Therefore, the clip 11 is securely held on the holding seat 2 side of the component 1 in combination with the above-described detachment prevention state.
Therefore, after that, while gripping the component 1, as shown in FIGS. 4 and 5, the hook-like locking leg 13 of the clip 11 is elastically engaged with the mounting hole H that is opened in advance on the panel P side. Then, the component 1 is securely attached to the panel P side.
When the locking leg 13 is engaged with the mounting hole H, the other end surface of the support column 14 and the backlash preventing piece 17 come into contact with the opposing circumferential surface of the mounting hole H as shown in the figure. There is no fear that the clip 11 itself will inadvertently rattle in the mounting hole H together with the part 1.
[0017]
【The invention's effect】
As described above, according to the present invention, the adoption of the above configuration allows the base plate of the clip to reach the component holding seat smoothly without being affected by the thickness of the side walls defining the holding seat and the hardness of the molding material. In addition to being able to be easily inserted, it is possible to provide a strong prevention force against the clip from the holding seat.
Therefore, under the present invention, it goes without saying that the thickness of both side walls defining the holding seat can be increased as necessary. Effective absorption is also possible.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part showing a relationship between a part and a clip provided for a mounting structure according to an embodiment of the present invention.
2A is a front view of a clip, FIG. 2B is a plan view thereof, FIG. 2C is a side view thereof, and FIG. 2D is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a plan view of a principal part, with a part of the clip showing a state where a pair of elastic arms are engaged with a lock claw of a holding seat.
FIG. 4 is a cross-sectional view of a principal part showing a state in which components are attached to a panel.
FIG. 5 is a cross-sectional view of a main part showing a state where components are attached to a panel from another direction;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Component 2 Holding seat 2a Holding seat opening 2b Holding seat side wall 2c Holding seat back wall 3 Holding wall 4 Center notch 5 Lock claw 5a Lock pawl outer end taper guide surface 5b Lock claw inner edge 11 Clip 12 Base plate 13 Locking leg 14 Strut 15 Elastic arm 16 Elastic arm tip step 17 Anti-rattle piece

Claims (2)

  A clip provided with a holding seat that is open on the back side of the part and closed on both sides with both side walls and the back wall, and a base plate that is inserted into the holding seat and a locking leg that engages with a mounting hole of the panel In the mounting structure for mounting the above components to the panel, the holding wall having both side walls defining the holding seat and the central notch opening toward the opening at the edge of the back wall is formed in a continuous state. In addition, a pair of locking claws projecting inwardly is formed on the side of the opening on both side walls defining the holding seat, and the tip ends on one end side of the column that connects the base plate of the clip and the locking leg. The base plate of the clip is placed in the holding seat by laying a pair of elastic arms that extend outwardly beyond the interval width of the lock claw and fit substantially the same as the shape of the central notch of the holding wall. At the time of insertion, the pair of elastic arms has a corresponding locking claw Mounting structure of the parts which is characterized by being configured so as to engaged.   2. The component mounting structure according to claim 1, wherein the width of the other end of the base plate is slightly increased.

Images