JP2010078157A - Assembling structure for assembling member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide assembling structure for an assembling member capable of reducing generation of foreign matters in the assembling structure. <P>SOLUTION: In this assembling structure for the assembling member assembled with a face glass 10 or a facing plate 18 (assembling member) on a meter case (assembled member), by engaging an engaging part 7, having an engaging hole 8 provided in the meter case (assembled member) 1 with a claw part 12 provided in a chip of an elastic engaging piece 11 provided in the face glass 10 or the facing plate 18 (assembling member), the first chamfering part 17 is formed in an inner circumferential portion of an end face 7a of the engaging hole 8 engaged with the claw part 12. The inner circumferential portion of the end face 7a of the engaging hole 8 is thereby precluded from being scraped off, and cut chips (i.e. foreign matters) are prevented from being generated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an assembly structure for an assembly member.

  2. Description of the Related Art Conventionally, in a vehicle meter device, an assembling structure by engaging a locking portion having a locking hole and an engaging claw is provided in order to assemble a front glass and a facing member to a meter case.

  5A and 5B show an example of a meter device having the above-described assembly structure, in which FIG. 5A is a vertical side view of the entire meter device, and FIG. 5B is a vertical side view of a main part of the meter device. In FIG. 5, the meter device is provided with a turn-back portion 2 whose upper portion protrudes at the front portion of the meter case 1, and a turn-up design plate 3 is provided on the inner surface thereof. The facing design plate 3 is sandwiched between the front glass 10 attached to the meter case 1 and the meter case 1.

  Various indicator instruments such as a speed unit 4 are accommodated in the meter case 1, and the indicator 5 is disposed on the front face of the dial 6 provided facing the opening 3 a of the facing design plate 3.

  As shown in FIG. 5B, locking pieces 11 having elasticity are formed on the lower and upper ends of the front glass 10 via a stepped portion 13. A claw portion 12 is formed at the tip of the locking piece 11. A plurality of locking portions 7 each having a locking hole 8 are formed at the lower end and the upper end of the meter case 1.

  A claw in which the facing design plate 3 is interposed between the meter case 1 and the front glass 10, the locking piece 11 of the front glass 10 is inserted into the locking hole 8, and the claw portion 12 is locked to the locking portion 7. The front glass 10 and the facing design plate 3 are attached to the meter case 1 by a fixed structure. At this time, by bringing the step portion 13 of the front glass 10 into contact with the end edge portion 14 of the meter case 1, dust or the like tries to enter the meter case from the locking hole 8 (the intrusion direction is indicated by an arrow). This contact portion 15 prevents this.

JP-A-10-181384 (FIGS. 1 and 3)

  However, in the above-described conventional assembly structure, when the locking portion 7 and the locking piece 11 are made of plastic molding, the inner peripheral portion of the end surface c of the locking hole 8 is substantially perpendicular. When the claw portion 12 is inserted into the locking hole 8, the inner peripheral portion of the end surface c is scraped by the right-angle portion of the tip of the step portion 16 of the claw portion 12, and shavings generated thereby adhere to this vicinity. Then, there is a problem that the shavings may be mixed as foreign matter inside the meter after the assembly is completed.

  Accordingly, an object of the present invention is to provide an assembling structure of assembling members that can reduce the occurrence of foreign matters in view of the above-described conventional problems.

  According to the first aspect of the present invention, there is provided an engagement between a locking portion having a locking hole provided in a member to be assembled and a claw portion formed at a tip of an elastic locking piece provided in the assembly member. Accordingly, the assembly member is an assembly structure in which the assembly member is assembled to the assembly member, and the claw portion is formed to extend from the outer surface of the engagement piece by a predetermined dimension, and A step portion that engages with an inner peripheral portion of the end surface of the hole, and a first inner peripheral portion that contacts the step portion when the claw portion is locked on the end surface of the locking hole; A first chamfered portion is formed on the first inner peripheral portion and the second inner peripheral portion facing each other.

  The invention described in claim 2 is the assembly structure of the assembly member according to claim 1, wherein the first chamfered portion is formed by C chamfering or R chamfering.

  According to a third aspect of the present invention, there is provided an engagement between a locking portion having a locking hole provided in the member to be assembled and a claw portion formed at the tip of an elastic locking piece provided in the assembly member. In the assembly structure of the assembly member in which the assembly member is assembled to the assembly member, the claw portion is formed to extend from the outer surface of the engagement piece by a predetermined dimension, A step portion that engages with an inner peripheral portion of the end surface of the hole, and a first inner peripheral portion that contacts the step portion when the claw portion is locked on the end surface of the locking hole; A first chamfered portion is formed on a first inner peripheral portion and a second inner peripheral portion facing the inner peripheral portion, and a second chamfered portion is formed at the tip of the stepped portion.

  The invention according to claim 4 is the assembly structure of the assembly member according to claim 3, wherein the first chamfered portion is formed by C chamfering or R chamfering, and the second chamfered portion is formed by R chamfering. It is formed.

  The invention according to claim 5 is the assembly member assembly structure according to any one of claims 1 to 4, wherein the assembly member is an assembly member of a meter device.

  According to the first aspect of the present invention, foreign matter can be prevented from being generated when the claw portion is inserted into the locking hole, and foreign matter can be prevented from being mixed into the assembled member after assembly. Moreover, the insertion of the claw portion into the locking hole becomes smooth, and the working efficiency can be improved.

  According to invention of Claim 2, a chamfering part can be made into a suitable chamfering form.

  According to invention of Claim 3, it can prevent that a foreign material generate | occur | produces at the time of insertion of the nail | claw part to a latching hole, and can prevent the foreign material mixing in the assembly member after an assembly | attachment. Moreover, the insertion of the claw portion into the locking hole becomes smooth, and the working efficiency can be improved.

  According to invention of Claim 4, a chamfering part can be made into a suitable chamfering form.

  According to the fifth aspect of the present invention, foreign matter can be prevented from being generated when the claw portion is inserted into the locking hole, and foreign matter can be prevented from being mixed into the meter device after assembly.

It is a vertical side view of the whole meter apparatus which shows 1st Embodiment of the assembly structure of the assembly member which concerns on this invention. It is a figure explaining the method of engagement of the latching | locking part and nail | claw part in the meter apparatus of FIG. 1, (A) and (B) show the assembly state before engagement after engagement, respectively. It is a vertical side view of the whole meter apparatus which shows the reference example of the assembly structure of an assembly member. It is a figure explaining the method of engagement of the latching | locking part and nail | claw part in the meter apparatus of FIG. 3, (A) and (B) show the assembly state before engagement after engagement, respectively. An example of the meter apparatus provided with the conventional assembly structure is shown, (A) is a vertical side view of the whole meter apparatus, (B) is a vertical side view of the principal part of a meter apparatus.

  Embodiments of an assembly structure for assembly members according to the present invention will be described below with reference to the drawings. In the following description, the same components as those in the conventional example are given the same reference numerals.

  FIG. 1 is a longitudinal sectional side view of the entire meter device showing a first embodiment of the assembly structure of the assembly member according to the present invention. In FIG. 1, a meter device is a front glass made of, for example, an acrylic resin molded product as an assembly member at the front portion of a meter case 1 made of, for example, a molded product of PP (polypropylene) resin, as an assembled member. 10 is attached and comprised. In the meter case 1, a meter such as a speedometer having a pointer 5 and a dial 6 is accommodated.

  A plurality of locking portions 7 each having a locking hole 8 are integrally formed at the end of the meter case 1. At the end portion of the front glass 10, a plurality of elastic locking pieces 11 are integrally formed corresponding to the locking portion 7, and a claw portion 12 is formed at the tip of the locking piece 11. .

  2A and 2B are diagrams for explaining the engagement between the locking portion 7 and the claw portion 12, wherein FIG. 2A shows before engagement, and FIG. 2B shows after engagement. First, the shape of the locking portion 7 will be described. As shown in the enlarged view of FIG. 2A, the locking hole 8 of the locking portion 7 is formed in a funnel shape on the inlet side where the claw portion 12 is inserted. In addition, the inner surface is a tapered surface that gradually decreases in size from the funnel-shaped portion toward the outlet side. Further, an inner peripheral portion of the end surface 7a on the outlet side of the locking hole 8 is formed on a linear slope between the end surface 7a and the inner surface of the locking hole 8 (that is, a shape called “C chamfering”). A chamfered portion 17 is provided as a first chamfered portion. That is, in FIG. 5B of the conventional example, the tapered surface continues to the end surface on the outlet side. However, in FIG. 2, the tapered surface does not continue to the end surface 7a on the outlet side, but ends just before the end surface 7a. The chamfered portion 17 is formed from the end location.

  Next, the shape of the claw portion 12 will be described. The claw portion 12 is formed to extend from the tip of the locking piece 11 having elasticity, and is formed to extend from the outer surface of the locking piece 11 by a predetermined dimension at a right angle. A flat step 16. Further, the claw portion 12 is formed with a tapered surface 12a so that the size thereof gradually increases from the tip end toward the tip end portion of the step portion 16.

  Next, how to engage the locking portion 7 and the claw portion 12 having the above-described structure will be described. First, as shown in FIG. 2 (A), on the locking hole 8 of the locking portion 7 provided on the meter case 1, the locking piece provided on the front glass 10 corresponding to the locking hole 8. Eleven claws 12 are positioned. When the locking piece 11 is positioned on the corresponding locking hole 8, the locking piece 11 is arranged slightly outward from the position aligned with the locking hole 8 (that is, away from the meter case 1). Has been made.

  Therefore, the locking piece 11 is pushed in the lateral direction against the elasticity by the assembly operator and aligned on the locking hole 8, and the claw portion 12 is inserted into the locking hole 8. Next, when the locking piece 11 is pushed down, the claw portion 12 is engaged while the tip of the stepped portion 16 is in contact with the tapered surface of the locking hole 8 and the chamfered portion 17 due to the elasticity of the locking piece 11. It goes to the exit side of the stop hole 8.

  Next, as shown in FIG. 2B, the stepped portion 16 of the claw portion 12 comes out to the exit side of the locking hole 8 and engages with the end surface 7a.

  The engaging portion 7 and the claw portion 12 are engaged in this way, but the inner peripheral portion of the end surface 7a of the engaging hole 8 with which the step portion of the claw portion 12 engages is chamfered. Since the angle formed by the taper surface of the hole 8 and the chamfered portion 17 is an obtuse angle, it is hardly scraped by the tip end of the step portion 16 of the claw portion 12, and shavings (that is, foreign matter) are hardly generated. Therefore, the shavings are hardly mixed as foreign matter inside the meter.

  Next, FIG. 3 is a vertical side view of the entire meter device showing a reference example of the assembly structure of the assembly member. In FIG. 3, the meter device has a turn-back plate 18 made of, for example, a molded product of ABS resin as an assembled member at the front portion of the meter case 1 made of, for example, a molded product of PP resin. It is attached. In the meter case 1, a meter such as a speedometer having a pointer 5 and a dial 6 is accommodated.

  A plurality of locking portions 7 each having a locking hole 8 are integrally formed at the end of the meter case 1. A plurality of elastic locking pieces 11 are formed on the end portion of the facing plate 18 corresponding to the locking portions 7, and claw portions 12 are formed on the tips of the locking pieces 11.

  4A and 4B are diagrams for explaining the engagement between the locking portion 7 and the claw portion 12, where FIG. 4A shows before engagement and FIG. 4B shows after engagement. First, the shape of the locking portion 7 will be described. As shown in FIG. 2A, the locking hole 8 of the locking portion 7 is formed in a funnel shape on the inlet side where the claw portion 12 is inserted. The inner surface is a tapered surface in which the size of the hole gradually decreases from the funnel-shaped portion toward the outlet side.

  Next, the shape of the claw portion 12 will be described. The claw portion 12 is formed to extend from the tip of the locking piece 11 having elasticity, and is formed to extend from the outer surface of the locking piece 11 by a predetermined dimension at a right angle. A flat step 16. Further, the claw portion 12 is formed with a tapered surface 12a so that the size thereof gradually increases from the tip toward the step portion 16. Further, a chamfered portion 19 is provided as a second chamfered portion formed in a curved slope between the tapered surface 12a and the tip portion of the step portion 16 (that is, a shape called “R chamfer”). . That is, in FIG. 5B of the conventional example, the tip portion of the step portion 16 protrudes at a right angle, but in FIG. 4, an acute angle is formed between the tapered surface 12 and the step portion 16. Instead, the chamfered portion 19 is formed.

  Next, how to engage the locking portion 7 and the claw portion 12 having the above-described structure will be described. First, as shown in FIG. 4 (A), on the locking hole 8 of the locking portion 7 provided on the meter case 1, the locking piece provided on the front glass 10 corresponding to the locking hole 8. Eleven claws 12 are positioned. When the locking piece 11 is positioned on the corresponding locking hole 8, the locking piece 11 is arranged slightly outward from the position aligned with the locking hole 8 (that is, away from the meter case 1). Has been made.

  Therefore, the locking piece 11 is pushed in the lateral direction against the elasticity by the assembly operator and aligned on the locking hole 8, and the claw portion 12 is inserted into the locking hole 8. Next, when the locking piece 11 is pushed down, the claw portion 12 causes the chamfered portion 19 to come into contact with the taper surface of the locking hole 8 due to the elasticity of the locking piece 11. Head for.

  Next, as shown in FIG. 4B, the stepped portion 16 of the claw portion 12 comes out to the exit side of the locking hole 8 and engages with the end surface 7a.

  In this way, the engaging portion 7 and the claw portion 12 are engaged, but the chamfered portion 19 is formed so that the tip end portion of the step portion 16 of the claw portion 12 does not have an acute angle. The inner peripheral portion of the end surface 7a of the stop hole 8 is hardly scraped, and shavings (that is, foreign matter) are hardly generated. Therefore, the shavings are hardly mixed as foreign matter inside the meter.

  As described above, the embodiment of the present invention has been described. However, the present invention is not limited to this, and various modifications and applications are possible.

  For example, in the first embodiment described above, the chamfered portion 17 is formed by C chamfering, but instead of this, a convex curved slope (that is, between the end surface 7a and the inner surface of the locking hole 8) (that is, , A shape called “R chamfering”).

  In the above-described reference example, the chamfered portion 19 is formed between the step portion 16 of the claw portion 12 and the tapered surface 12a. Instead, the flat portion of the step portion 16 is eliminated, and the locking piece A large curved chamfer 19 may be formed directly from the outer surface 11a of the eleven.

  Moreover, you may apply combining the assembly structure of the above-mentioned 1st Embodiment and a reference example. That is, the chamfered portion 17 may be formed at the inner peripheral portion of the end surface 7 a of the locking hole 8, and the chamfered portion 19 may be formed at the tip portion of the step portion 16 of the claw portion 12.

  In the above-described embodiment, the present invention has been described with respect to the assembly of the meter case 1 and the front glass 10 or the facing plate 18. However, the present invention is not limited to this and is also applicable to the assembly of the facing plate 18 and the facing glass 10. can do.

  Further, the present invention is not limited to the meter device, and is generally applicable when the assembly between the assembly target member and the assembly member is performed by the engagement of the locking hole of the locking portion and the claw portion. .

1 Meter case (member to be assembled)
7 Locking part 7a End face 8 Locking hole 10 Front glass (assembly member)
11 Locking piece 12 Claw portion 16 Step portion 17 Chamfered portion (first chamfered portion)
18 Turn plate (assembly member)
19 Chamfer (second chamfer)

Claims (5)

The assembled member is engaged by engagement between a locking portion having a locking hole provided in the assembled member and a claw portion formed at the tip of an elastic locking piece provided in the assembled member. An assembly structure of the assembly member to which the assembly member is assembled,
The claw portion has a stepped portion that extends from the outer surface of the locking piece by a predetermined dimension and engages with the inner peripheral portion of the end surface of the locking hole,
At the end face of the locking hole, when the claw portion is locked, a first inner peripheral portion that contacts the stepped portion, and a second inner peripheral portion that faces the first inner peripheral portion, An assembly structure for an assembly member, wherein the first chamfered portion is formed. In the assembly structure of the assembly member according to claim 1,
The assembly structure of the assembly member, wherein the first chamfered portion is formed by C chamfering or R chamfering. The assembled member is engaged by engagement between a locking portion having a locking hole provided in the assembled member and a claw portion formed at the tip of an elastic locking piece provided in the assembled member. An assembly structure of the assembly member to which the assembly member is assembled,
The claw portion is formed to extend from the outer surface of the locking piece by a predetermined dimension, and has a stepped portion that engages with the inner peripheral portion of the end surface of the locking hole,
At the end face of the locking hole, when the claw portion is locked, a first inner peripheral portion that contacts the stepped portion, and a second inner peripheral portion that faces the first inner peripheral portion, A first chamfer is formed;
An assembly structure for an assembly member, wherein a second chamfered portion is formed at a tip of the stepped portion. In the assembly structure of the assembly member according to claim 3,
The first chamfered portion is formed by C chamfering or R chamfering,
The assembly structure of an assembly member, wherein the second chamfered portion is formed by R chamfering. In the assembly structure of the assembly member according to any one of claims 1 to 4,
The assembly member is an assembly member of a meter device.

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