JP4131274B2 - Bonding structure between resin window and reinforcing member - Google Patents

Description

  The present invention relates to a coupling structure between a resin window and a reinforcing member.

2. Description of the Related Art Conventionally, in a vehicle window device applied to a sunroof, a device using a resin window having a specific gravity smaller than that of glass is known as a daylighting member in order to reduce the weight of the vehicle. The resin window is reinforced by a reinforcing member made of iron, aluminum, or the like at the periphery in order to reinforce bending and torsional rigidity.
By the way, the resin window has a larger amount of deformation due to thermal expansion and contraction with temperature change than a material generally used as a reinforcing member such as iron or aluminum. For this reason, the structure which absorbs the heat | fever expansion / contraction of the resin window is conventionally employ | adopted by attaching the resin window so that a shift | offset | difference can be carried out laterally with respect to a reinforcement member. As such a window device for a vehicle, there are, for example, JP-A-62-214011 and JP-A-5-16419.
The conventional vehicle window device represented by the above publication is provided for each coupling portion (for example, an engagement portion between a mounting hole and a projection or a fastening portion by a bolt and a nut) between a resin window and a reinforcing member that reinforces the resin window. A gap is provided, and the thermal expansion and contraction of the resin window is absorbed by the gap.

  However, in the case of the thermal expansion / contraction absorption method using the gap of the mounting hole as described above, there is a problem that it is difficult to assemble the reinforcing member and the resin window so that the gap is appropriate, and the assemblability is poor. In addition, unless special consideration is given to the gap, the presence of the gap naturally causes rattling in the resin window. Therefore, in the conventional device, the gap of the resin window is prevented by filling the gap with sponge rubber or the like, or the resin window is sandwiched with an elastic body. When the heat resistance is increased, the thermal expansion / contraction absorption effect is remarkably lowered, and it is difficult to satisfy both the thermal expansion / contraction absorption effect and the rattling prevention effect of the resin window.

  An object of the present invention is to provide a coupling structure that is coupled so as to be capable of relative displacement by thermal expansion and contraction of a resin window.

  In order to solve the above-described problems, the present invention is configured as follows. That is, the invention of claim 1 is a coupling structure of a resin window and a reinforcing member disposed along the peripheral edge of the resin window, and is a nut fixed to a coupling boss formed on the resin window. And a bolt that is coupled to the nut through a mounting hole provided in the reinforcing member, and a step portion formed between the head portion and the screw portion is set to have a smaller diameter than the head portion and a larger diameter than the screw portion. And a coupling member that can be displaced relative to each other by thermal expansion and contraction of the resin window by providing a gap in a radial direction with respect to the stepped portion that engages with the mounting hole. And

  According to the invention of claim 1 configured as described above, there is a gap in the radial direction between the mounting hole of the reinforcing member and the stepped portion engaged therewith. Thus, it is assembled in a state of relative displacement with respect to the surface direction, that is, a state in which heat expansion and contraction is possible due to temperature change.

  The invention according to claim 2 is the structure for connecting the resin window and the reinforcing member according to claim 1, characterized in that the flange provided on the nut comes into contact with the end face of the connecting boss on the entire surface. To do.

  According to the invention of claim 2 configured as described above, it is possible to avoid a load being input directly or intensively to the coupling boss at the time of displacement movement due to thermal expansion and contraction of the resin window. For this reason, it becomes possible to prevent problems such as cracks, chipping, and shaving, which are defects of the resin.

  The invention according to claim 3 is the coupling structure of the resin window and the reinforcing member according to claim 1 or 2, wherein the coupling member has an attachment hole provided in a substantially central portion on one side of the resin window in any direction. The reference hole for the fixed point configuration that is restricted so that it does not move, and the reference hole is a circular hole having the same diameter as the step part that restricts the bolt step part from moving in any direction. It is characterized by.

  According to the invention of claim 3 configured as described above, since the bolt step is regulated by the reference hole so that it does not move in any direction, the expansion and contraction direction of the resin window is centered on the reference hole. Will be specified in the radiation direction.

The invention of claim 4 is a coupling structure of a resin window and a reinforcing member disposed along the peripheral edge of the resin window, and is formed in the mounting hole provided in the reinforcing member and the resin window. It has a coupling member consisting of a columnar boss inserted into the mounting hole, and by crushing the tip of the columnar boss inserted into the mounting hole with heat caulking, the columnar boss and the rib provided in the vicinity thereof By sandwiching a reinforcing member, the resin window is coupled so as to be capable of relative displacement by thermal expansion and contraction.

According to the invention of claim 4 configured as described above, since the reinforcing member is sandwiched between the columnar boss and the rib, the relative displacement due to the thermal expansion and contraction of the resin window is possible.

  According to the present invention, the relative displacement due to the thermal expansion and contraction of the resin window can be combined.

  The best mode for carrying out the present invention will be specifically described below with reference to the drawings. First, a first embodiment will be described with reference to FIGS. 1 is a schematic cross-sectional perspective view, FIG. 2 is a plan view of the reinforcing member, FIG. 3 is a cross-sectional view showing a coupling structure of the resin window and the reinforcing member corresponding to the line AA in FIG. 2, and FIG. It is sectional drawing which shows the combined structure of the resin window corresponding to the BB line of 2, and a reinforcement member.

  The vehicle window device according to the present embodiment is applied to a sunroof, and as shown in FIG. 1, a resin window 1 formed in a horizontally long rectangular panel shape and the resin window 1 are reinforced. Therefore, the reinforcing member 2 is disposed along the inner surface (lower surface) on the outer peripheral side, and the reinforcing member 2 is attached to a vehicle body (not shown). Since the resin window 1 made of polymethyl methacrylate or polycarbonate has a lower elastic modulus than glass, the bending / torsional rigidity is reinforced by the reinforcing member 2 having a rectangular frame structure as shown in FIG. Further, in the case of a sunroof, the reinforcing member 2 is formed in a cross-sectional shape having a cross-sectional secondary moment that can resist the sucked-out load during high-speed traveling.

The resin window 1 and the reinforcing member 2 are coupled by a plurality of coupling members 6 including bolts 5 and nuts 4 at appropriate intervals over the entire circumference. Hereinafter, the coupling structure will be described mainly based on the cross-sectional views of FIGS.
A plurality of coupling bosses 3 having a cylindrical shape are integrally formed inward at an appropriate interval on the inner surface near the outer periphery of the resin window 1. In the cylindrical holes of the coupling bosses 3, A nut 4 is inserted and fixed. On the other hand, the reinforcing member 2 is provided with a mounting hole 7 corresponding to the coupling boss 3 over the entire circumference, and the stepped bolt 5 is screwed into the nut 4 through the mounting hole 7 to fasten the resin window 1 and the reinforcing member 2. is doing.

That is, in this embodiment, the resin window 1 and the reinforcing member 2 are joined to each other by a fastening structure with a stepped bolt 5 and a hooked nut 4, and the bolt 5 has a head portion 5 a and a screw portion 5 c. The step portion 5b formed between the head portion 5a has a smaller diameter than the head portion 5a and a larger diameter than the screw portion 5c, and its axial length is slightly larger than the plate thickness of the reinforcing member 2. Is set.
Accordingly, when the threaded portion 5c of the bolt 5 is tightened to the nut 4, the end surface of the stepped portion 5b abuts against the end surface of the nut 4, so that further tightening is prevented. Therefore, the flange portion 4a of the nut 4 and the bolt 5 The space between the head portion 5a and the head portion 5a is ensured to be slightly larger than the thickness of the reinforcing member 2 sandwiched therebetween. Therefore, as shown in FIG. 4, if the resin window 1 has a gap C in the radial direction between the mounting hole 7 of the reinforcing member 2 and the step portion 5 b engaged therewith, the reinforcing member is within the range of the gap C. 2 is assembled in a state of relative displacement with respect to the surface direction, that is, a state in which heat expansion and contraction is possible due to temperature change.

  In this case, since the flange portion 4a provided on the nut 4 is in contact with the entire end surface of the coupling boss 3 at the time of displacement movement due to thermal expansion and contraction of the resin window 1 or the like, It is possible to avoid a load being input intensively. For this reason, it becomes possible to prevent problems such as cracks, chipping, and shaving, which are defects of the resin.

  Therefore, in the present embodiment, one of the mounting holes 7 provided at the center of both the front and rear sides of the reinforcing member 2 is attached to the mounting holes 7 provided over the entire circumference of the reinforcing member 2 as shown in FIG. The reference hole 7a is used as the sub reference hole 7b. Here, the reference hole 7a is a circular hole having the same diameter as that of the step portion 5b that restricts the step portion 5b of the bolt 5 from being displaced in any direction, thereby forming a fixed point. The sub-reference hole 7b allows the stepped portion 5b of the bolt 5 to shift in the linear direction (major diameter direction) connecting the center thereof and the center of the reference hole 7a, and shifts in other directions. This is a long hole that is regulated so that the inner diameter in the minor axis direction is equal to the outer diameter of the stepped portion 5b of the bolt 5.

  Thus, if the reference hole 7a and the sub-reference hole 7b are determined, the expansion / contraction direction of the resin window 1 is specified in the radiation direction centering on the reference hole 7a. Accordingly, the other mounting holes 7 are formed in a shape that does not restrict radial expansion and contraction around the reference hole 7 a of the resin window 1. In the present embodiment, as shown in the figure, the long hole is a long hole whose linear direction connecting the center thereof and the center of the reference hole 7a is the long diameter direction, and the inner diameter in the short diameter direction is also the outer diameter of the step portion 5b of the bolt 5 It is set a little larger than. Setting the diameter in this way is effective in absorbing manufacturing errors. 3 and 4, 8 is a weather strip attached to the outer periphery of the reinforcing member 2, and 9 is a sealing material interposed between the resin window 1 and the reinforcing member 2.

  This embodiment is configured as described above. Therefore, when assembling the resin window 1 to the reinforcing member 2, the reference hole 7a serves as an assembling reference, so that the assembling can be performed easily and appropriately. For this reason, it is possible to improve the assemblability and to minimize variations among products. Further, since the resin window is always coupled to the reinforcing member 2 in a state where movement other than expansion and contraction is restricted by the reference hole 7a and the sub-reference hole 7b, there is no manufacturing error in the play of the resin window 1 with respect to the reinforcing member 2. It will be surely prevented.

On the other hand, the thermal expansion and contraction accompanying the temperature change of the resin window 1 is absorbed by being performed in the radial direction centering on the reference hole 7a, thereby preventing distortion of the resin window due to the thermal expansion and contraction. In this case, the amount of thermal expansion / contraction of each joint portion in the resin window 1 is calculated by regulating the sub-reference hole 7b so that the thermal expansion / contraction direction of the resin window 1 is a radial direction centered on the reference hole 7a. This makes it possible to determine the area for absorbing heat expansion and contraction of each mounting hole 7 (including the sub-reference hole 7b) to the minimum necessary size.

Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is a modified example related to the setting of the fixed point when the resin window 1 is expanded and contracted, and the coupling structure of the resin window 1 and the reinforcing member 2 is configured in the same manner as in the first embodiment. Shall be.
In this embodiment, among the mounting holes 7 provided at appropriate intervals over the entire circumference of the rectangular reinforcing member 2, the mounting holes at the substantially central portions on the front, rear, left and right sides are set as reference holes 10 a to 10 d, respectively. is there. That is, the front and rear reference holes 10a and 10b are elongated holes whose longitudinal direction is the front-rear direction perpendicular to the sides, and the left and right reference holes 10c and 10d are elongated holes whose longitudinal direction is the lateral direction orthogonal to the sides. The inner diameter in the minor axis direction is set equal to the outer diameter of the step portion 5b of the bolt 5 engaged therewith, and movement of the bolt 5 in that direction is restricted.

  When the reference holes 10 a to 10 d are thus defined, the intersection of the long diameter lines of the reference holes 10 a to 10 d intersecting at the substantially central portion of the reinforcing member 2 becomes the fixed point 11. For this reason, the expansion and contraction of the resin window 1 is restricted in the radial direction around the fixed point 11. Therefore, in the mounting holes 7 except for the reference holes 10a to 10d, the linear direction connecting the center and the fixed point 11 is the major axis direction, and the inner diameter in the minor axis direction is related thereto, as in the case of the first embodiment. It is formed in a long hole that is slightly larger than the outer diameter of the stepped portion 5b of the bolt 5 to be joined.

As described above, in the second embodiment, the resin window 1 is provided at a portion other than the actual coupling portion between the resin window 1 and the reinforcing member 2 by the plurality of reference holes 10 a to 10 d provided for each side of the reinforcing member 2. This fixed point 11 is set, and the resin window 1 is always completely restricted from moving relative to the reinforcing member 2 by the plurality of reference holes 10a to 10d. For this reason, rattling does not occur. In addition, when the resin window 1 and the reinforcing member 2 are assembled, the reference holes 10a to 10d serve as the assembly standard, so that the assembly can be performed easily and appropriately as in the case of the first embodiment. it can.
In addition, since the fixed point 11 can be set near the center of the resin window 1, the amount of deformation of the peripheral edge due to thermal expansion and contraction can be substantially equalized. Further, by setting the fixed point 11 inside the reinforcing member 2, the length from the fixed point 11 to each mounting hole 7 and the deformation amount of the resin window 1 starting from the fixed point 11 in each mounting hole 7. And the required maximum value of the major diameter of each mounting hole 7 can be made smaller than in the first embodiment, and the strength of the reinforcing member 2 can be relatively improved.

  The present invention is not limited to the illustrated embodiment, and various modifications can be made without departing from the scope of the invention.

For example, the coupling structure for coupling the resin window 1 and the reinforcing member 2 so as to be able to move relative to each other can be changed as shown in FIGS.
The modified example shown in FIG. 6 is a coupling structure using claw ribs as coupling members, and the claw ribs 12 facing each other instead of the above-mentioned coupling boss 3 are integrally projected at predetermined intervals over the entire circumference of the resin window 1. The resin window 1 and the reinforcing member 2 are coupled by inserting and engaging the claw rib 12 with the mounting hole 7 of the reinforcing member 2 using its elastic deformation. Although not shown, a stopper is provided between the claw ribs 12 arranged at a predetermined interval so as to come into contact with the upper surface of the reinforcing member 2 at the time of coupling. The reinforcing member is formed by the stopper and the claw of the claw rib 12. 2 is sandwiched from above and below to enable relative displacement movement of the resin window 1 by thermal expansion and contraction.

  Further, the modified example shown in FIG. 7 is a coupling structure by heat caulking using a columnar boss as a coupling member. In this case, columnar bosses 13 are integrally projected at predetermined intervals over the entire circumference of the resin window 1. . Then, after the columnar boss 13 is inserted into the mounting hole 7 of the reinforcing member 2, the tip of the columnar boss 13 is crushed by heat caulking via a washer 14, and the head 13a of the columnar boss 13 and ribs provided in the vicinity thereof The reinforcing member 2 is sandwiched from above and below at the tip of 15, whereby the resin window 1 is coupled to the reinforcing member 2 so as to be capable of relative displacement by thermal expansion and contraction.

In the second embodiment, four reference holes 10a to 10d are provided for each side in order to set the fixed point 11 inside the reinforcing member 2. However, the number of reference holes may be three, and the reinforcement may be reinforced. You may arrange | position so that it may adjoin on one side in four sides which comprise the member 2 front and rear, right and left. In this way, by assembling the reference holes, the assembly of the resin window 1 and the reinforcing member 2 can be further facilitated. Further, the applicable range of the vehicle window device of the present invention is not limited to the sunroof, and can be applied to any vehicle window such as a rear quarter window and a rear window. The window shape is not limited to a quadrangle, and may be a triangle or a pentagon.
Further, the mounting hole 7 of the reinforcing member 2 may be a hole having one end opened, that is, a groove, as long as the strength of the reinforcing member is ensured. Furthermore, when the resin window 1 and the reinforcing member 2 are coupled by the fastening method using the bolt 5 and the nut 4, a mounting hole or a mounting groove may be set on the resin window 1 side. The thermal expansion / contraction direction may be specified by setting a reference hole on the side.

1 is a schematic cross-sectional perspective view of a vehicle window device. It is a top view of a reinforcing member. It is sectional drawing which shows the coupling | bonding structure of the resin window and reinforcement member corresponding to the AA line of FIG. It is sectional drawing which shows the coupling | bonding structure of the resin window and reinforcement member corresponding to the BB line of FIG. It is a top view of the reinforcing member which concerns on 2nd Embodiment. It is sectional drawing which shows the example of a change of the connection structure of a resin window and a reinforcement member. It is sectional drawing which shows the other modification of the coupling | bonding structure of a resin window and a reinforcement member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Resin window 2 ... Reinforcement member 4 ... Nut 5 ... Bolt 7 ... Mounting hole 7a ... Reference hole 7b ... Sub-reference hole

Claims (4)

A combined structure of a resin window and a reinforcing member disposed along the peripheral edge of the resin window,
A nut fixed to a coupling boss formed on the resin window;
From the bolt that is coupled to the nut through a mounting hole provided in the reinforcing member, and a step portion formed between the head portion and the screw portion has a smaller diameter than the head portion and a larger diameter than the screw portion. A coupling member
A resin window and a reinforcing member, wherein the resin window and the reinforcing member are coupled to each other so as to be movable relative to each other by thermal expansion and contraction of the resin window by providing a gap in a radial direction with respect to the step portion engaged with the mounting hole. Bond structure. A coupling structure between the resin window and the reinforcing member according to claim 1,
A coupling structure of a resin window and a reinforcing member, wherein a flange provided on the nut comes into contact with the end face of the coupling boss on the entire surface. A coupling structure between the resin window and the reinforcing member according to claim 1 or 2,
A mounting hole provided at a substantially central portion on one side of the resin window is a reference hole for a fixed point configuration that restricts the coupling member from moving in any direction,
The resin hole and reinforcing member coupling structure, wherein the reference hole is a circular hole having the same diameter as that of the step part that restricts the step part of the bolt from shifting in any direction. A combined structure of a resin window and a reinforcing member disposed along the peripheral edge of the resin window,
A mounting hole provided in the reinforcing member;
A coupling member is formed on the resin window and includes a columnar boss inserted into the mounting hole.
By squeezing the tip of the columnar boss inserted into the mounting hole with heat caulking, the reinforcing member is sandwiched between the columnar boss and a rib provided in the vicinity thereof. A coupling structure of a resin window and a reinforcing member, wherein the resin window and the reinforcing member are coupled so as to be movable.

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