JP4719040B2 - Instrument panel duct member welding method - Google Patents

Description

  The present invention relates to an improvement in a method for welding a duct member of an instrument panel installed in front of a driver's cab of an automobile.

Patent Document 1 discloses a technique for forming an instrument panel by vibration welding a resin duct member across the vehicle width direction on the back surface of a resin instrument panel main body. In this patent document 1, the duct member is formed symmetrically so as to be compatible with both the right handle specification and the left handle specification instrument panel.
JP 2000-190755 A (paragraph 0003 column, paragraph 0016 column, FIGS. 1 to 3)

By the way, the meter hood bulges out on the driver's seat side of the instrument panel body, which is the main instrument panel, and it is a gentle streamline from the meter hood base to the periphery due to the design requirements. surface uplift than seat side is rather large, which is asymmetrical and substantially right half region substantially left half area of the vehicle width direction. Along with this, the back side recessed amount of the instrument panel main body of the meter hood side are also multi-Kuna' than the passenger's side. Therefore, if the duct member is formed symmetrically as in the above-mentioned Patent Document 1, the duct member cannot be vibration welded to the back surface of the instrument panel body unless the instrument panel body is also formed symmetrically. Then, it becomes impossible to make a gentle streamline from the base end of the meter hood to the periphery, and there are restrictions on the design.

  Therefore, in general, in order to vibration weld the duct member to the back surface of the asymmetric instrument panel body, the duct member is also formed asymmetrically in correspondence with the instrument panel body. The welding jig on the panel body side and the welding jig on the duct member side must be prepared separately for the right handle specification and the left handle specification, respectively, which increases equipment costs. Further, two welding jigs must be replaced for each of the right handle specification and the left handle specification, and it takes time and labor to change the welding work.

  The present invention has been made in view of this point, and an object of the present invention is to reduce equipment costs and to easily change the welding operation in a short time.

  In order to achieve the above object, the present invention changes the structure of the welded portion of the duct member according to the right handle specification and the left handle specification in the substantially right half region and the substantially left half region in the vehicle width direction. The welding member on the duct member side is shared by the right handle specification and the left handle specification.

Specifically, the present invention is different from the surface side protrusion amounts of the right handle specifications and substantially right half of the vehicle width direction between the left-hand specifications regions and substantially left half area, also the rear surface side recessed amount along with this The following solution was taken for the method of vibration welding a resin duct member across the vehicle width direction on the back surface of a different resin instrument panel body.

That is, the invention described in claim 1 includes a lower welding jig dedicated to each of the right handle specification and the left handle specification, and an upper welding jig shared regardless of the right handle specification or the left handle specification. Around the air-conditioning air outlet on the back of each instrument panel body of the right handle specification and left handle specification, with the instrument panel body facing down and set on the lower welding jig. The half area and the left half area form a symmetrical welding surface except for the vertical direction, while the right handle specification and left handle specification duct members face down on the back of the instrument panel body. the instrument panel above the upper welding jig abutment height approximately half the right side of the duct member back surface corresponding to the welding surface of the body in mounting state As the same in the region substantially left half area on the surface of each of the duct member, with different amount of projection welding rib in the right handle specifications and left-hand specifications weld surface pairs of the instrument panel body projecting integrally in response locations, after setting a dedicated lower welding jig to the instrument panel main body of the right handle specification or left-hand specifications face down, the duct member right handle specification or left-hand specifications The instrument panel main body and the duct member are placed on the back surface of the instrument panel main body with the two welding jigs in a state where the back surface of the duct member is in contact with the common upper welding jig. The duct member is vibrated and welded to the back surface of the instrument panel main body by applying pressure and applying vibration.

The invention according to claim 2 is the invention according to claim 1, wherein the right-hand specification and the left-hand specification have an approximately right half region and a substantially left half region on the vehicle body front end side of each instrument panel body. A front defroster air outlet that extends over the area is formed, and the welding surface around the front defroster air outlet is substantially the right half of the instrument panel body with the instrument panel body facing down and set on the lower welding jig . The region and the substantially left half region are formed symmetrically in the vertical direction .

According to the first aspect of the invention, since the upper welding jig on the duct member side is shared by the right handle specification and the left handle specification, the lower welding jig on the instrument panel main body side and the upper side on the duct member side are used. Equipment costs can be reduced compared to the case where welding jigs are separately prepared for the right handle specification and the left handle specification. Further, the instrument panel main body side can each vibration welding the duct member to the back surface of each of the instrument panel main body just at the right hand drive specification and left-hand specifications replace the lower welding jig, the upper duct member side The welding work can be changed in a short time and easily as much as it is not necessary to replace the welding jig. In addition, the welding jig that is common to the right handle specification and the left handle specification and does not need to be replaced is generally arranged on the upper side where it is difficult to change the welding work, so the welding work can be changed in a shorter time and more easily. It can be done efficiently. In addition, by changing the protruding amount of the welding rib according to the right handle specification and the left handle specification, the duct member can be vibration welded to the back surface of the instrument panel body, and the thickness of the duct member is changed. Compared with the case where the thickness of a duct member is thick, the cooling after shaping | molding can be quick and a shaping | molding cycle can be shortened while the weight of a duct member can be reduced.

According to the invention which concerns on Claim 2, the welding surface of the front defroster air blower outlet periphery of an instrument panel main body is formed symmetrically in the left-right direction and the up-down direction by the substantially right half area | region and the substantially left half area | region. Therefore, regardless of the right and left handle specifications, there is no vertical difference between the right half area and the left half area. Installation on the car body is not complicated .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall view of a welding apparatus 101 to which a welding method according to an embodiment of the present invention is applied, and FIG. 2 shows an exploded perspective view of an instrument panel 1 of a right handle specification. The instrument panel 1 is formed by vibrating and welding a duct member 9 including a duct upper member 5 and a duct lower member 7 to the instrument panel main body 3 by the welding device 101. First, after describing the configuration of the welding apparatus 101, the instrument panel main body 3, and the duct member 9, the welding method will be described.

<Configuration of welding apparatus 101>
As shown in FIG. 1, the welding apparatus 101 includes a frame assembly 105 erected on a base 103, and a column 107 is erected substantially at the center of the frame assembly 105. On the lower side of the column 107, a lifting platform 109 is arranged so as to be movable up and down along the column 107 by a driving means (not shown). On the lifting platform 109, the instrument panel main body 3 and a duct used for welding are disposed. A lower welding jig 111 that supports the member 9 is detachably held by a clamp jig 113. The lower welding jig 111 is dedicated respectively right handle specification or left-hand specifications.

  An exciter 115 is supported by a plurality of rods 117 on the upper side of the support column 107, and a plurality of upper welding jigs 119 are attached to the lower end of the exciter 115 via attachment plates 121. It has been. The upper welding jig 119 is a common welding jig regardless of the right handle specification or the left handle specification.

  When welding, the lifting platform 109 is raised so that the back surface of the duct member 9 is brought into contact with the upper welding jig 119, and the vibrator 115 is driven so that the duct member 9 is back of the instrument panel body 3. Vibration welding.

<Configuration of instrument panel body 3>
As shown in FIG. 2, the instrument panel main body 3 is made of resin, and the instrument panel main body 3 has a substantially right half region and a substantially left half region on the vehicle body front end side in the vehicle width direction. A front defroster air outlet 11 is formed, and side defroster air outlets 13 are formed at both ends in the vehicle width direction. A meter hood 15 bulges out on the driver's seat side, which is a substantially right half region in the vehicle width direction. The meter hood 15 has a gentle streamlined shape from the base end to the periphery due to design requirements. Therefore, the driver's seat side is a region of substantially right half surface side protrusion amounts than passenger seat side is a region of substantially left half rather large, asymmetrical and substantially right half region substantially left half area It has become. Accordingly, the multi Kuna' from the back side recessed amount of substantially left half area of the substantially right half region of the instrument panel main body 3. Although not shown, in the instrument panel body 3 of the left handle specification, the height difference between the substantially right half region and the substantially left half region is opposite to that of the right handle specification. Accordingly, the instrument panel body 3 of each of the right handle specification and the left handle specification is attached to the lower welding jig 111 with the instrument panel body 3 facing down on the back surface except the periphery of the front defroster air outlet 11. In the set state, a substantially right and left half area and a substantially left half area except for the vertical direction form a symmetrical welding surface.

On the other hand, the welding surface around the front defroster air outlet 11 has a substantially right half region and a substantially left half region when the instrument panel body 3 is set on the lower welding jig 111 with the instrument panel body 3 facing down. Are formed symmetrically in the vertical direction. The same applies to the instrument panel body 3 of the left handle specification.

<Configuration of duct member 9>
As shown in FIG. 2, the duct upper member 5 is made of resin and is formed in a substantially U shape, and a plurality of engagement holes 17 are formed at predetermined intervals on the outer peripheral edge portion thereof, The duct lower member 7 is also made of resin and is formed in a substantially U-shape, and a plurality of engaging claws 19 are formed at predetermined intervals on the outer peripheral edge thereof. 17, the duct upper member 5 is positioned on the duct lower member 7, and the duct member 9 is temporarily assembled. An air passage communicating with the front defroster air outlet 11 and the side defroster air outlet 13 is formed in a state where the duct lower member 7 and the duct upper member 5 are assembled.

  In the duct upper member 5, an opening 20 extending over a substantially right half region and a substantially left half region in the vehicle width direction corresponds to the front defroster air outlet 11 of the instrument panel body 3. Is formed. In addition, an air inlet 21 to the air passage is formed on the rear side of the vehicle body of the duct lower member 7 so as to extend over a substantially right half region and a substantially left half region in the vehicle width direction.

  On the front end side of the duct lower member 7, two first welding ribs 23 extending over a substantially right half region and a substantially left half region in the vehicle width direction are formed at the front end portion of the instrument panel body 3. A second line of one piece that is continuously projected along the welding surface of the instrument panel main body 3 so as to extend along the substantially right half area and the left half area. The welding rib 25 is protruded integrally and integrally corresponding to the welding surface of the instrument panel body 3 so as to follow the opening 20 and the first welding rib 23.

  Further, at the rear end of the duct lower member 7 at the rear end of the vehicle body, the third welding ribs 27 are integrally projected one by one at locations corresponding to both ends of the air introduction port portion 21, and both the third welding ribs 27 are provided. A fourth welding rib 28 is integrally provided so as to extend along the air inlet 21 in the middle.

  Further, the fifth welding ribs 29 are integrally projected one by one at the rear of both ends of the duct lower member 7 in the vehicle width direction. Of the two fifth welding ribs 29, the shape of the fifth welding rib 29 at the left end in the vehicle width direction is a rectangular ring shape as shown in an enlarged view in FIG. 3, and the fifth welding rib 29 at the right end in the vehicle width direction. 4 is a rectangular ring shape, as shown in an enlarged view in FIG. 4, the contact rib 31 is integrally projected on the inner side of the fifth welding rib 29 and the reinforcing rib 33 on the outer side of the fifth welding rib 29. Are projecting together.

Further, the upper welding jig contact height H2 (for example, see FIG. 6) on the back surface corresponding to the welding surface of the instrument panel main body 3 of each duct lower member 7 of the right handle specification and the left handle specification is substantially the right half. And the first to fifth welding ribs 23, 25, 27, 28, on the surface of the duct lower member 7 of the right handle specification and the left handle specification. 29 is set to be the same for the right handle specification and the left handle specification (see FIGS. 6 to 10).

Specifically, the welding allowance M of the first to fourth welding ribs 23, 25, 27, and 28 is changed by changing the plate thickness T of the duct lower member 7 as shown in FIG. The specification and the left handle specification are set the same. 6A shows the third welding rib 27 in the substantially left half region of the right handle specification duct lower member 7, and FIG. 6B shows the third welding rib in the substantially right half region of the right handle specification duct lower member 7. FIG. Each rib 27 is shown, and the duct lower member plate thickness T of the third welding rib 27 portion in the substantially right half region is larger than the duct lower member plate thickness T of the third welding rib 27 portion in the substantially left half region. Thereby, while the upper welding jig contact amount H2 of the back surface of the duct lower member 7 corresponding to the welding surface of the instrument panel main body 3 becomes the same in both areas, the surface of the third welding rib 27 projecting portion of the duct lower member 7 and The space | interval with the welding surface of the instrument panel main body 3 becomes the same. Therefore, the protrusion amount H of the third welding rib 27 is set to be the same in both regions, and the penetration allowance M of the third welding rib 27 is also set to be the same. In the case of the left handle specification, the plate thickness T of the duct lower member 7 is reversed between the substantially right half region and the substantially left half region. The enlarged view in FIG. 7 shows the welding position of the fourth welding rib 28 in the substantially left half region, and although not shown, the duct lower member plate thickness T of the fourth welding rib 28 in the substantially right half region is substantially the left side. It is thicker than the duct lower member plate thickness T of the fourth welding rib 28 in the half region.

In the fifth welding rib 29, as shown in FIGS. 9 and 10, the welding allowance M is set to be the same between the right handle specification and the left handle specification by making the protrusion amount H different . FIG. 9 shows the fifth welding rib 29 in the substantially left half region of the right handle specification duct lower member 7, and FIG. 10 shows the fifth welding rib 29 in the substantially right half region of the right handle specification duct lower member 7, the amount of projection of the fifth welding rib 29 of substantially right half region H is multi Kuna' than the projection amount H of the fifth welding rib 29 of substantially left half area. Further, the plate thickness T of the duct lower member 7 corresponding to the welding surface of the instrument panel body 3 is set to be the same in both regions. Accordingly, the duct lower member 7 corresponding to the welding surface of the instrument panel main body 3 in both regions in a state where the respective duct lower members 7 of the right handle specification and the left handle specification are placed face down on the back surface of the instrument panel main body 3. The upper welding jig contact height H2 on the back surface is the same, and the welding allowance M of the fifth welding rib 29 is set to be the same. In the case of the left handle specification, the protruding amount H of the fifth welding rib 29 is reversed between the substantially right half region and the substantially left half region. The above difference is compared with the difference in the upper welding jig contact height H2 on the back surface of the duct lower member 7 corresponding to the welding surface of the instrument panel body 3 in the substantially right half region and the substantially left half region. the target small portions correspond by changing the thickness T of Dakutoroa member 7 correspond with different projection amount H2 of the welding rib in the difference is relatively large sites.

<Welding method>
As described above, the resin instrument panel has a different amount of bulge on the front side in the right-hand side specification and left-hand side specification in the right-hand side specification and the left-hand side specification, and the back-side dent amount is different accordingly. The procedure for vibration welding the resin duct member 9 across the vehicle width direction on the back surface of the main body 3 is performed as follows. In this example, the instrument panel body 3 has a right handle specification.

  First, as shown in FIG. 1, the lower welding jig 111 dedicated to the right handle specification is held and set on the lifting platform 109 by the clamp jig 113 with the lifting platform 109 lowered. On the other hand, the engaging claw 19 of the duct lower member 7 of the right handle specification is engaged with the engaging hole 17 of the duct upper member 5, the duct upper member 5 is positioned on the duct lower member 7, and the duct member 9 is temporarily assembled.

Next, the instrument panel body 3 having a right handle is turned face down and set on the dedicated lower welding jig 111 on the lifting platform 109, and then the duct member 9 is turned face down on the back surface of the instrument panel body 3. Placed on.

Then, in a state where the bonded portion back face of the duct member 9 is raised the lifting platform 109 is brought into contact with the upper welding jig 119, drives the vibrator 115 instrument panel main body 3 upward welding Dakutoroa member 7 The duct lower member 7 is vibrated and welded to the back surface of the instrument panel body 3 (see FIGS. 5 to 10).

At this time, the plate thickness T of the duct lower member 7 at the projecting portions of the first to fourth welding ribs 23, 25, 27, 28 is, for example, as shown in FIG. The height of the upper welding jig contacting the back surface of the duct lower member 7 corresponding to the welding surface of the instrument panel main body 3 is made the same, and the protruding amount H of the fifth welding rib 29 is substantially the right half. multi comb than the area of the substantially left half of the area are the same Dakutoroa member 7 upper welding jig contact height of the back surface corresponding to the welding surface of the instrument panel main body 3. Accordingly, the duct lower member 7 is vibrated by the common upper welding jig 119 in the instrument panel main body 3 in which the front side bulge amount is different in the substantially right half region and the substantially left half region, and the back side dent amount is different accordingly. It is possible to weld, and the equipment cost can be reduced as compared with the case where the lower welding jig 111 and the upper welding jig 119 are separately prepared for the right handle specification and the left handle specification, respectively.

  Moreover, the duct lower member 7 can be vibrated and welded to the back surface of each instrument panel body 3 of the right handle specification and the left handle specification simply by changing the lower welding jig 111 for setting the instrument panel body 3, The welding work can be changed in a short time and easily as much as it is not necessary to replace the upper welding jig 119 for vibrating the duct lower member 7.

Further, the welding surface around the front defroster air outlet 11 of the instrument panel main body 3 is formed symmetrically in the left and right direction and the height direction in the substantially right half region and the substantially left half region. Regardless of the specifications and left-hand handle specifications, there is no vertical difference between the area on the right half and the area on the left half, the mounting position on the vehicle body side may be symmetrical, and the instrument panel 1 can be mounted on the vehicle body. Is not complicated.

Further, by changing the plate thickness T of the duct lower member 7 according to the right handle specification and the left handle specification, the duct lower member 7 can be vibrated and welded to the back surface of the instrument panel body 3, and the first to fourth weld ribs 23. , 25, 27, and 28, vibration welding can be stably performed as much as it is not necessary to change the protrusion amount H.

Furthermore, the duct lower member 7 can be vibrated and welded to the back surface of the instrument panel body 3 by changing the protruding amount H of the fifth welding rib 29 according to the right handle specification and the left handle specification. The weight of the duct lower member 7 can be reduced as much as the plate thickness T does not need to be changed, and the molding cycle can be shortened faster than the case where the plate thickness of the duct lower member 7 is thick. .

  In addition, the upper welding jig 119, which is common to the right handle specification and the left handle specification and does not need to be replaced, is generally arranged on the upper side where it is difficult to change the welding operation. And it can be performed easily and efficiently.

FIG. 11 is a view corresponding to FIG. 10 in another embodiment. In this embodiment, the plurality of abutting ribs 35 that abut on the upper welding jig 119 correspond to the welding surface of the instrument panel main body 3 by the projection amount H1. The lower part of the duct lower member 7 is integrally projected in the region on the right side half. In the case of the left handle specification, the abutment rib 35 is integrally projected in the region on the substantially left half of the back surface of the duct lower member 7. Further, the plate thickness T of the duct lower member 7 corresponding to the welding surface of the instrument panel body 3 and the protruding amount H of the fifth welding rib 29 are set to be the same in both regions. Thereby, while the welding jig contact height H2 of the back surface of the duct lower member 7 corresponding to the welding surface of the instrument panel main body 3 becomes the same in both regions, the welding allowance M of the fifth welding rib 29 is set to be the same. The duct lower member 7 can be vibration welded to the back surface of the instrument panel body 3 with the common upper welding jig 117. Therefore, in this embodiment, the vibration welding can be stably performed as much as the protrusion amount H of the fifth welding rib 29 is not changed, and the thickness T of the duct lower member 7 is not changed. Only the weight of the duct lower member 7 can be reduced and the molding cycle can be shortened.

  The present invention is useful for a duct member welding method for an instrument panel installed in front of a driver's cab of an automobile.

It is a general view of a welding apparatus. It is a disassembled perspective view of the instrument panel of a right handle specification. It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. FIG. 5 is a cross-sectional view corresponding to line VV in FIG. 2. 5A is an enlarged view of a portion C in FIG. 5, and FIG. 5B is an enlarged view corresponding to a portion C in FIG. 5 in a cross section corresponding to the line V′-V ′ in FIG. It is sectional drawing corresponded in the VII-VII line of FIG. It is sectional drawing equivalent to the VIII-VIII line of FIG. It is an expanded sectional view equivalent to the IX-IX line (VIII-VIII line of FIG. 2) of FIG. FIG. 5 is an enlarged cross-sectional view corresponding to line XX in FIG. 4 (line VIII′-VIII ′ in FIG. 2). FIG. 11 is a view corresponding to FIG. 10 in another embodiment.

3 Instrument panel body with right handle specification 9 Duct member with right handle specification 11 Front defroster air outlet (air conditioning air outlet)
13 Side defroster air outlet (air conditioning air outlet)
23 first welding rib 25 second welding rib 27 third welding rib 28 fourth welding rib 29 fifth welding rib 35 contact rib 111 lower welding jig 119 upper welding jig H protrusion amount of welding rib H1 protrusion of the contact rib Quantity H2 Upper welding jig contact height of duct lower member M Welding allowance of welding rib T Thickness of duct lower member

Claims (2)

The back side of the resin instrument panel main body with the right-side and left-hand side specifications differing in the amount of bulge on the front side in the area on the right side and the area on the left side in the vehicle width direction. A method of vibration welding a resin duct member over the vehicle width direction,
Prepare a lower welding jig dedicated to the right handle specification or left handle specification, and a common upper welding jig regardless of the right handle specification or left handle specification,
In the state of the right handle specification and the left handle specification around the air-conditioning air outlet on the back of the instrument panel body, in the state where the instrument panel body is facing down and set in the lower welding jig , While forming a bilaterally symmetric welding surface except for the vertical direction with the region on the substantially left half,
When the right handle specification and left handle specification duct members are placed face down on the back surface of the instrument panel body, the upper welding jig contact on the back surface of the duct member corresponding to the weld surface of the instrument panel body is provided. The welding ribs on the surface of each duct member have different protrusion amounts for the right handle specification and the left handle specification so that the contact height is the same in the substantially right half region and the substantially left half region. projected integrally on the welding surface corresponds portions of the instrument panel main body,
Set the instrument panel body with the right handle or left handle face down and set it in the dedicated lower welding jig , and then place the right handle or left handle duct member face down on the back of the instrument panel body. The instrument panel body and the duct member are pressed and vibrated with the two welding jigs in a state where the back surface of the welding position of the duct member is in contact with the common upper welding jig. A duct member welding method for an instrument panel, wherein a duct member is vibration welded to the back surface of the instrument panel main body. In the instrument panel duct member welding method according to claim 1,
A front defroster air outlet is formed on the vehicle body front end side of each of the right handle specification and the left handle specification on the front side of the vehicle body. The front defroster air outlet extends over a substantially right half region and a substantially left half region. The welding surface around the outlet is formed symmetrically also in the vertical direction in the substantially right half region and the substantially left half region in the state where the instrument panel body is turned face down and set in the lower welding jig. A duct member welding method for an instrument panel .

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