JP4093044B2 - Temporary holding structure for modular instrument panels - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temporary holding structure for a modular instrument panel, and more particularly to an improvement in a temporary holding structure for a modular instrument panel in which a steering member engaged with a positioning protrusion of a vehicle body is made of die casting.
[0002]
[Prior art]
In recent years, a modular instrument panel has been proposed in which parts such as steering members, wiring harnesses, and air conditioning ducts are pre-assembled into a modular instrument panel that is used as a vehicle outfitting component before being mounted on the vehicle. Has been.
[0003]
Such a modular instrument panel is a conventional sequential assembly type in which a steering member is assembled to a painted body, a harness is assembled along the steering member, and the instrument panel is assembled at the end. The assembly workability is higher than that.
[0004]
By the way, when assembling this modular instrument panel to the vehicle body, in order to accurately assemble it to the set position of the vehicle body, it is temporarily held on the vehicle body by hooking it on the vehicle body, and the modular instrument panel in the temporarily held state is It is necessary to fasten and fix to.
[0005]
Therefore, in order to obtain such a temporary holding state at a fixed position, a guide groove for positioning and temporary holding is formed at the end of the steering member assembled to the instrument panel. Is a temporary holding structure technology in which a positioning projection that engages with the guide groove is provided on a portion on the vehicle body side corresponding to this end portion (such as a structure portion facing the vehicle width direction such as a lower pillar). It has been proposed (Patent Document 1).
[0006]
That is, the end of the steering member is a substantially flat bracket facing the lower pillar provided with the positioning pin, and the guide groove formed in the bracket extends substantially horizontally from the end of the bracket on the front side of the vehicle body. The horizontally extending rear end is cut upward to form a substantially L shape.
[0007]
Then, align the guide groove of the bracket of the instrument panel carried into the passenger compartment with the positioning pin of the vehicle body, insert the positioning pin into the guide groove, and move the instrument panel forward of the vehicle body along the guide groove. When the positioning pin hits the trailing edge of the guide groove, the positioning pin engages with the rear end raised portion of the guide groove by the weight of the instrument panel or by pushing the instrument panel downward. Are positioned and temporarily held.
[0008]
[Patent Document 1]
JP-A-6-199152 (FIGS. 1 and 2)
[0009]
[Problems to be solved by the invention]
By the way, when the steering member including the above-described end portion is manufactured by a die casting manufacturing method in which the die is cut in the longitudinal direction of the vehicle body, the above-described raised portion of the guide groove formed in the end portion has an undercut shape with respect to the die-cutting direction. Therefore, it is impossible to mold only with the core mold and the cavity mold, and it is necessary to further mold by providing a slide mold.
[0010]
For this reason, there exists a problem that manufacturing cost rises compared with the case where it shape | molds only with a core type | mold and a cavity type | mold.
[0011]
The present invention has been made in view of the above circumstances, and temporarily holds a modular instrument panel that can be manufactured at low cost without using a slide mold, even if the steering member is manufactured by a die casting method. The purpose is to provide a structure.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the module-type instrument panel temporary holding structure according to the present invention has a crank-shaped guide groove extending from the front to the rear of the vehicle body at the end of the steering member of the module. The step groove portion of the groove can be molded with two molds that are divided in the longitudinal direction of the vehicle body.
[0013]
That is, the modular instrument panel temporary holding structure according to the present invention includes a modular instrument panel in which a steering member and an instrument panel are assembled in advance along an end of the steering member in the vehicle width direction. In the temporary holding structure of the modular instrument panel that is temporarily held by the vehicle body by the guide groove that is engaged with the positioning protrusion of the vehicle body, the guide groove can be opened on the front side of the vehicle body to allow the positioning protrusion to enter. A front side groove part, a rear side groove part that the rear side of the vehicle body is opened, a step groove part that communicates the vehicle body rear side of the front side groove part and the vehicle body front side of the rear side groove part, and is formed in a crank shape, The upper edge of the front groove is lower than the upper edge of the rear groove and is higher than the lower edge of the rear groove. Is formed on location, the positioning projection which enters the guide groove, characterized in that it is in contact with the temporary retaining the upper edge of the stepped groove.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of a temporary holding structure for a modular instrument panel according to the present invention will be described with reference to the drawings.
[0015]
FIG. 1 shows a modular instrument panel (hereinafter simply referred to as a module) 100 having a temporary holding structure according to the present embodiment, which is applied to a fully-finished vehicle body 200 using a module gripping arm 300 as an attachment aid. FIG. 2 is a perspective view of the main part of the carrying-in state as viewed from the upper left side of the vehicle body 200, and FIG. 2 is a perspective view of the main part of the same state as FIG.
[0016]
That is, the module 100 in which the air conditioning unit 10 and the steering member 20 and the instrument panel 90 are assembled in advance is formed at both ends of the steering member 20 by the module gripping arm 300 installed at the mounting work place on the vehicle body 200, respectively. The attached mounting portion 22 is supported by being gripped and moved to the vehicle body front side Fr.
[0017]
At this time, the pipes 11, 12, and 13 of the air conditioning unit 10 shown in FIG. 2 pass through the through holes 211, 212, and 213 formed in the front panel 210 of the vehicle body 200, respectively, and protrude toward the engine room side. It is connected to the provided evaporator.
[0018]
Specifically, as shown in FIG. 3, which is a cross-sectional view along the front-rear direction of the vehicle body 200, the seal members 14, 15, 16 disposed in close contact with the periphery of the pipes 11, 12, 13 are respectively Each of the pipes 11 to 13 penetrates the front panel 210 in a watertight manner by being deformed and brought into close contact with the opening edges of the through holes 211, 212, and 213.
[0019]
In addition, the module 100 includes positioning pins (positioning protrusions) 221 of the lower pillars 220 and 230 in which the mounting portions 22 that are the end portions of the steering member 20 exposed from both side portions thereof are respectively connected to both side end portions of the front panel 210. By being hooked on 222, 231, and 232, the vehicle body 200 is temporarily held.
[0020]
Then, the module gripping arm 300 is removed from the temporarily held module 100, and the module gripping arm 300 is withdrawn from the compartment of the vehicle body 200.
[0021]
Thereafter, the module 100 in the temporarily held state is fixed to the vehicle body 100 by fastening the left and right lower pillars 220 and 230 and the mounting portions 22 of the steering member 20 with fastening members such as predetermined bolts.
[0022]
Here, the steering member 20 assembled to the modular instrument panel 100 is a shaft portion that extends in the vehicle width direction and supports a steering column (not shown), as shown in detail in the perspective view of the main part in FIG. The main body part 21 and the attachment part 22 are composed of a certain main body part 21 and the attachment part 22, and the main body part 21 and the attachment part 22 are integrally formed by a die casting method.
[0023]
The steering member 20 is formed of a material such as an aluminum alloy or a magnesium alloy.
[0024]
Each mounting portion 22 has a guide groove 23 into which the positioning pins 221 and 231 provided on the lower pillars 220 and 230 enter and engage with the surfaces facing the corresponding lower pillars 220 and 230, and the positioning pins 222. , 232 enters and engages with a guide groove 27.
[0025]
In FIG. 4, only the right-side mounting portion 22 is shown while only the right-side mounting portion 22 is omitted, and only the right-side mounting portion 22 will be described below. The mounting portion 22 has the same configuration as the right mounting portion 22 and has the same effects.
[0026]
The guide groove 23 extends substantially horizontally corresponding to the vehicle body front side Fr, and is open at the vehicle body front side Fr side to allow the positioning pin to enter, and at a position higher than the front side portion 24. The rear portion (rear groove portion) 26 that extends substantially horizontally corresponding to the rear of the vehicle body 200 and is open on the rear side of the vehicle body, and the rear end portion of the front portion 24 and the front end portion of the rear portion 26 are substantially vertical. It is formed in a crank shape including a step portion (step groove portion) 25 communicating with.
[0027]
Further, as shown in the side view from the right side of the vehicle in FIG. 5, the upper edge 24a of the front portion 24 is at a position lower than the upper edge of the rear portion 26 and higher than the lower edge 26b. It is formed at a position higher by Δh.
[0028]
Similarly to the guide groove 23, the guide groove 27 formed at a position lower than the guide groove 23 also has a front part (front groove part) 28, a rear part (rear groove part) 30, and a step part (step groove part) 29. The upper edge 28a of the front portion 28 is formed at a position lower than the upper edge of the rear portion 30 and higher than the lower edge 30b by a height Δh. .
[0029]
Furthermore, the upper portion of the upper guide groove 23, the lower portion of the lower guide groove 27, and the end walls 22a of the portion between the guide grooves 24 and 27 have notches 22b extending toward the front Fr. , 22c, 22d are formed.
[0030]
And the fitting nut 50 is each mounted | worn with the end wall 22a so that the circumferential groove 51 may be fitted by these notches 22b-22d.
[0031]
These fitting nuts 50 are screwed into fastening bolts that have passed through holes (not shown) of the lower pillar 230 from the outside of the lower pillar 230 after the module 100 is temporarily held by the vehicle body 200, so that the module 100 is secured to the vehicle body 200. Used for fastening and fixing to.
[0032]
The steering member 20 formed in this way is integrally formed by a die casting method in which a die is cut in the longitudinal direction of the vehicle body. The portion of the guide groove 23 will be described in detail with reference to the right side view of FIG. To do.
[0033]
First, the front portion 24 of the guide groove 23 is formed by a front die 310 that is die-cut to the vehicle body front Fr, and the rear portion 26 is formed by a rear die 320 that is die-cut to the vehicle body rear Rr. .
[0034]
Here, since the upper edge 24a of the front portion 24 is formed to be higher than the lower edge 26b of the rear portion 26, the step portion 25 is a portion lower than the upper edge 24a of the front portion 24. The rear portion 26 can be divided into two parts by being higher than the lower edge 26b.
[0035]
For this reason, a portion of the step portion 25 that is lower than the upper edge 24a of the front portion 24 (a portion that is lower than the parting line PL) is formed by the front mold 310 that is die-cut into the front Fr of the vehicle body together with the front portion 24. can do.
[0036]
On the other hand, a portion of the step portion 25 that is higher than the lower edge 26b of the rear portion 26 (a portion that is higher than the parting line PL), together with the rear portion 26, is rear die 320 that is die-cut to the vehicle body rear Rr. Can be formed.
[0037]
The portion formed by the front mold 310 and the portion formed by the rear mold 320 form a single guide groove 23.
[0038]
Therefore, even when the steering member 20 is manufactured by a die casting method using a front mold and a rear mold that are divided in the vehicle front-rear direction, the step portion 25 can be molded without causing an undercut portion. .
[0039]
For this reason, it can manufacture without using the slide type | mold for shape | molding an undercut part, and can reduce manufacturing cost.
[0040]
The lower guide groove 27 can be manufactured in the same manner as the upper guide groove 23.
[0041]
In addition, the entire attachment portion 22 and the entire main body portion 21 including the end plate 22a can be manufactured by a front die and a rear die that are divided in the longitudinal direction of the vehicle body without using a slide die. Therefore, the entire steering member 20 can be integrally manufactured at a low cost by a die casting method.
[0042]
The steering member 20 formed in this way is assembled to the instrument panel 90 with the mounting portions 22 exposed on both sides of the module 100, but the module 100 is temporarily held by the vehicle body. Is described below.
[0043]
First, as shown in the right side view of FIG. 7, the module 100 is moved to the front Fr in a state where the module 100 is supported by the module gripping arm 300, so that the mounting portions exposed on both sides of the module 100 are exposed. Positioning pins 231 and 232 fixed to the right lower pillar 230 relatively enter the front portions 24 and 28 of the 22 guide grooves 23 and 28, respectively (FIG. 7A).
[0044]
From this state, when the module 100 is further moved forward Fr, the module 100 side is moved so that the positioning pins 231 and 232 move relatively along the guide grooves 23 and 28. When 232 reaches the step portions 25 and 29, the module 100 is caused by its own weight to have a step difference between the upper edge 24a (28a) of the front portion 24 (28) and the upper edge 26a (30a) of the rear portion 26 (30). The module 100 and the vehicle body 200 are relatively positioned at this position, and the positioning pins 231 and 232 are positioned at the upper edge 26a of the front end of the rear portions 26 and 30 of the guide grooves 23 and 27 , respectively . 30a, i.e., in contact with the upper edge 26a of the step portion 25, 29, to 30a, module 100 is temporarily held to the vehicle body 200 (FIG. 7 (b))
[0045]
As described above, according to the temporary holding structure of the module 100 according to the present embodiment, the steering member 20 is die-cast including the step portions 25 and 29 that can function as a positioning portion for the vehicle body 200 and a temporary holding portion. When manufacturing by a manufacturing method, manufacturing cost can be reduced.
[0046]
Note that the temporary holding structure of the module 100 according to the present embodiment can be positioned relative to the vehicle body more effectively when a load f directed from the vehicle body front side Fr to the rear side Rr is acting on the module 100.
[0047]
That is, for example, as shown in FIG. 3A, when the reaction force from the floor insulator 250 or the like laid on the vehicle body 200 is received on the front surface of the air conditioning unit 10, and between the front panel 210 and the air conditioning unit 10. This reaction force can be a load f directed toward the rear of the vehicle body, such as when receiving a restoring force by the seal members 14, 15, 16 sandwiched between the two.
[0048]
However, in this case, since the positioning pins 231 and 232 abut against the front edges 25a and 28a of the step portions 25 and 28, the module 100 is not displaced further to the rear Rr. The relative positional relationship with the step portions 25 and 29 is firmly maintained, and a highly accurate positioning state can be ensured.
[0049]
Of course, even when the load f to the rear Rr does not always act on the module 100, the module 100 is moved by the rear Rr only by hand or the like only during the mounting operation for fastening and fixing the mounting portion 22 to the lower pillar 230. If it is pressed, the same result as the above-described effect can be obtained.
[0050]
Further, as shown in FIG. 8, when the positioning pins 231 and 232 are formed in a vertically long shape having a vertical length L1 and a vehicle body longitudinal length L2 (<L1), the guide groove 23 ( 27) The groove width (vertical width) Wb of the rear portion 26 (30) is set narrower (Wb <L1) than the vertical length L1 of the positioning pin 231 (232), and the step portion 25 The groove width (width in the longitudinal direction of the vehicle body) Wm of (29) may be set slightly longer (substantially the same) than the longitudinal length L2 of the positioning pin 232 (232).
[0051]
Thus, according to the temporary holding structure of the module 100 of the embodiment in which the groove widths Wb and Wm are set, when the positioning pin 231 (232) reaches the step portion 25 (29) (FIG. 8B). The positioning pin 231 (232) cannot pass through the rear portion 26 (30) of the guide groove 23 (27), and the positioning pin 231 (232) does not pass through the step portion 25 (29) of the guide groove 23 (27). Since there is almost no play in the longitudinal direction of the vehicle body, the positioning pin 231 (232) is stably held by the step portion 25 (29).
[0052]
In the temporary holding structure of the module 100 of the embodiment configured as described above, the positioning pin 231 (232) is connected to the rear portion 26 even when the load f to the rear Rr does not act on the module 100. (30) Since the upper edge 26a (30a) and the front edge 25a (29a) and the rear edge 25b (29b) of the stepped portion 25 (29) are in contact with or close to each other, the same as when the load f is applied. In addition, it is held stably.
[0053]
The positioning pins 231 (232) are not limited to those having an elliptical cross section whose vertical direction is longer than the longitudinal direction of the vehicle body, as shown in FIGS. 8 (a) and 8 (b). However, as shown in FIG. 5C, it is also possible to apply one in which the vertical direction is formed in a rectangular cross section longer than the longitudinal direction of the vehicle body. In the embodiment configured in this way, the cross sectional length The same function and effect as those of the circular shape are exhibited.
[0054]
However, when the positioning pin 231 (232) having a rectangular cross section is employed, the corner of the rectangular cross section extends from the front edge 25a (29a) of the step portion 25 (29) to the upper edge of the rear portion 26 (30). R shape so that it does not ride on the R shape extending from the rear edge 25b (29a) of the step portion 25 (29) to the lower edge 24b (28b) of the front side portion 24 (28). It is preferable to take measures such as setting the radius or dropping the corners of the cross-sectional rectangle by chamfering.
[0055]
Further, in the temporary holding structure of the module 100 according to the above-described embodiment, the front mold 310 and the rear mold 320 for molding each guide groove 23 and the like are substantially parallel to the front-rear direction of the vehicle body 200 shown in FIG. As shown in FIG. 10B, the parting line PL is formed on the step portion 25 of the guide groove 23 formed in this way. A burr 22f extending in a substantially horizontal direction can be formed along the line.
[0056]
On the other hand, as shown in FIG. 9B, at least a part PL1, PL2 of the parting line PL extends on the lower side of the front edge 25a of the stepped portion 25 and on the upper side of the rear edge 25b. According to the steering member 20 in which the guide groove 23 is formed using the front mold 310 and the rear mold 320 as formed above, the horizontal parting between the parts PL1 and PL2 of the parting line is performed. As shown in FIG. 10A, burrs 22e in the vertical direction along the parting lines PL1 and PL2 of the parting line can be generated.
[0057]
Such a vertical burr 22e (FIG. 10A) is in contact with the positioning pin 231 and the front edge 25a of the step portion 25 as compared to the front burr 22f (FIG. 10B). As a temporary holding structure of the modular instrument panel 100 in which positioning in the longitudinal direction of the vehicle body during temporary holding is performed by contact between the positioning pin 231 and the front edge 25a of the stepped portion 25. More accurate positioning can be performed, which is preferable.
[0058]
【The invention's effect】
As described above, according to the temporary holding structure for a modular instrument panel according to the present invention, the crank-shaped guide groove provided along the end portion of the steering member, the rear groove portion being higher than the front groove portion. The positioning protrusions on the vehicle body side that have been formed and entered the front groove portion of the crank-shaped guide groove are the front groove portion and the rear groove portion of the crank-shaped guide groove as the module-type instrument panel is sent toward the front of the vehicle body. Therefore, the module type instrument panel is temporarily held by the vehicle body.
[0059]
Since the upper edge of the front groove portion of the crank-shaped guide groove is formed at a position higher than the lower edge of the rear groove portion, the guide groove is formed on the front mold that is die-cut forward of the vehicle and on the rear side of the vehicle body. It can be formed by a rear mold to be die-cut.
[0060]
Therefore, even when the steering member including the end portion is manufactured by the die casting method, the step groove portion with which the positioning protrusion engages is not undercut, and is divided in the longitudinal direction of the vehicle body without using a slide die. It can be formed by a front mold and a rear mold.
[Brief description of the drawings]
FIG. 1 is a perspective view (No. 1) showing how a modular instrument panel according to the present invention is attached to a vehicle body.
FIG. 2 is a perspective view (No. 2) showing a state in which the module type instrument panel according to the present invention is attached to the vehicle body.
FIG. 3 is a cross-sectional view along the longitudinal direction of the vehicle body showing a state where a pipe of the air conditioning unit penetrates the front panel.
FIG. 4 is a perspective view showing a main part of a steering member assembled to a modular instrument panel.
FIG. 5 is a side view from the right side of the vehicle showing a right side mounting portion of the steering member.
6 is a right side view corresponding to FIG. 5, showing a mold for forming guide grooves. FIG.
FIG. 7 is a diagram for explaining an engagement action between a guide groove and a positioning pin.
FIG. 8 is a view for explaining the engaging action between the guide groove and the positioning pin in the embodiment in which the positioning pin has an oval cross section.
FIG. 9 is a view showing a front mold and a rear mold in which a parting line is set so that burrs are formed extending in the vertical direction.
FIG. 10 is a diagram showing a difference in burrs to be formed.
[Explanation of symbols]
10 Air-conditioning unit 11, 12, 13 Pipe 14, 15, 16 Seal member 20 Steering member 21 Main body (steering member main body)
22 Mounting portion 22a End walls 22b, 22c, 22d Notches 22e, 22f Burrs 23, 27 Guide grooves 24, 28 Front portion (front groove portion)
24a, 28a, 26a, 30a Upper edge 24b, 28b, 26b, 30b Lower edge 25, 29 Step portion (step groove portion)
25a, 29a Front edge 25b, 29b Rear edge 26, 30 Rear portion (rear groove)
50 Insertion nut 51 Circumferential groove 90 Instrument panel 100 Module type instrument panel 200 Car body 210 Front panel 211, 212, 213 Through hole 220 Left lower panel 221, 222, 231, 232 Positioning pin (positioning protrusion)
230 Right lower panel 250 Floor insulator 300 Module gripping arm 310 Front mold 320 Rear mold Fr Car body front Rr Car body rear Up Car body upper LH Car width left direction RH Car width right direction PL Parting line PL1, PL2 One parting line Part f Load L1 Vertical length L2 Longitudinal length Wb Groove width Wm at rear portion Groove width at step portion

Claims (6)

A modular instrument panel in which a steering member and an instrument panel are assembled in advance is provided on the vehicle body by a guide groove that is provided along an end of the steering member in the vehicle width direction and that engages with a positioning protrusion of the vehicle body. In the temporary holding structure of the modular instrument panel to be temporarily held,
The guide groove includes a front groove portion that is open on a front side of the vehicle body to allow the positioning protrusion to enter, a rear groove portion that is open on a rear side of the vehicle body, a vehicle body rear side of the front groove portion, and a rear groove portion. A stepped groove that communicates with the front side of the vehicle body is formed in a crank shape, and the upper edge of the front groove is lower than the upper edge of the rear groove, and the lower edge of the rear groove A module-type instrument panel temporary holding structure, wherein the positioning projection formed at a higher position than the guide groove is temporarily held in contact with an upper edge of the step groove portion. 2. The positioning projection that has entered the guide groove abuts on a front edge of the step groove portion in a state in which a load pressing from the vehicle body to the vehicle body rear side is applied to the module type instrument panel. Temporary holding structure of the described modular instrument panel. The groove width in the vertical direction of the rear groove portion is set narrower than the vertical length of the positioning projection, and the groove width in the vehicle longitudinal direction of the stepped groove portion is substantially the same as the length of the positioning projection in the vehicle longitudinal direction. The temporary holding structure for a modular instrument panel according to claim 1 or 2, wherein The temporary holding structure for a modular instrument panel according to claim 3, wherein the positioning protrusion is formed in an elliptical cross section whose vertical direction is longer than the longitudinal direction of the vehicle body. The temporary holding structure for a modular instrument panel according to claim 3, wherein the positioning protrusion is formed in a rectangular cross section whose vertical direction is longer than the longitudinal direction of the vehicle body. The guide groove is formed by a front mold that is die-cut at the front of the vehicle body and a rear mold that is die-cut at the rear of the vehicle body,
At least a part of a parting line between the front mold and the rear mold is formed on the extension of the step groove portion below the front edge and on the extension of the rear edge of the step groove portion. The temporary holding structure for a modular instrument panel according to any one of claims 1 to 5.

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