JP2010285067A - Instrument panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-weight instrument panel because a hollow part includes a duct part through which an air-conditioning wind can flow and a reinforcing part for reinforcing an outer member, can reduce the number of components without providing an additional duct for flowing the air-conditioning wind and an additional reinforcing member for reinforcing the outer member. <P>SOLUTION: An instrument panel 10 includes an outer member 12 for forming a designed surface 11, an inner member 13 partially joined to the back side of the designed surface 11 and for forming a hollow part 32 between the rest of the inner member and the outer member 12. The hollow part 32 includes a duct part 38 through which an air-conditioning wind can flow and a reinforcing part 33 for reinforcing the outer member 12. Since the hollow part 32 is utilized, it is not necessary to provide an additional duct for flowing the air-conditioning wind and an additional reinforcing member for reinforcing the outer member 12. Therefore, the configuration reduces the number of components and contributes to reducing a weight of the instrument panel 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an improved technique for an instrument panel provided in front of a vehicle interior.

  An instrument panel for supporting a speedometer and a glove box is attached to the front of the vehicle interior (see, for example, Patent Document 1 (FIG. 1)).

Various cross-sectional structures of an instrument panel as shown in Patent Document 1 have been proposed. Among these, a cross-sectional structure by vibration welding is practically used. Such a structure will be described with reference to the next figure.
As shown in FIG. 7, the instrument panel 100 is formed by vibration welding a duct 102 for sending conditioned air to the back surface of the base material 101.

  In addition to the duct 102, various parts are welded to the back surface, so the number of parts increases and the weight increases.

  Furthermore, when the portion melted by applying vibration is solidified, a change in volume occurs, a sink phenomenon occurs, and as a result, a depression may be locally generated in the base material 101. As a countermeasure, it is effective to increase the rigidity by increasing the thickness of the base material 101. However, when the base material 101 is thickened, the weight of the instrument panel increases.

  Since a reduction in vehicle weight is required, it is not preferable that the instrument panel is heavy.

Japanese Utility Model Publication No. 55-99836

  This invention makes it a subject to provide the weight reduction technique of an instrument panel.

The invention according to claim 1 is an instrument comprising an outer member that forms a design surface, and an inner member that is partly joined to the back surface of the design surface and that forms a hollow portion between the outer member and the other portion. Panel,
The hollow portion includes a duct portion through which conditioned air can be conducted and a reinforcing portion that reinforces the outer member.

  In the invention according to claim 2, the reinforcing portion is stretched from the top plate portion that extends over the vehicle interior in the vehicle width direction toward the center tunnel provided below the top plate portion. A support reinforcing portion for supporting the plate portion is included.

  According to a third aspect of the present invention, the support reinforcing portion is connected to the center tunnel from the top plate portion and is provided with a pair of closed cross-section columns provided in the vehicle width direction, and spans between the columns and the columns. And a pair of beams provided in the vertical direction.

  In the invention according to claim 4, the outer member is an opening in which an area formed by the pair of support columns and the pair of beam portions communicates from the passenger compartment toward the center tunnel, and a vehicle component is attached to the opening. It is fixed.

  According to a fifth aspect of the present invention, a front end formed by an outer member front end that is an end of the outer member in the vehicle body direction and an inner member front end that is disposed at a position facing the front end of the outer member is: The outer member front end is formed so as to be separated from the inner member front end, or the inner member front end is formed so as to be separated from the outer member front end, thereby forming a front end opening formed in a substantially U shape. A vehicle body attachment pin attached to the vehicle body is inserted into the front end opening.

  The invention according to claim 6 is characterized in that the inner member is formed to have substantially the same width and height as the outer member.

  The invention according to claim 7 is characterized in that the reinforcing portion has reinforcing ribs for reinforcing the outer member formed only on the inner member side.

  The invention according to claim 8 is characterized in that the reinforcing portion is formed in a truss shape in a sectional view.

  In the invention which concerns on Claim 1, a hollow part is provided with the duct part which can conduct an air-conditioning wind, and the reinforcement part which reinforces an outer member. Since the hollow portion is used, there is no need to separately arrange a duct for conducting conditioned air and a reinforcing material for reinforcing the outer member. The number of parts is reduced, contributing to weight reduction of the instrument panel.

  In the invention which concerns on Claim 2, a support reinforcement part is spanned toward a center tunnel from a top-plate part. The weight of the top plate portion is transmitted to the center tunnel via the support reinforcing portion. By supporting the top plate portion with the center tunnel, deformation of the instrument panel can be suppressed.

  In the invention which concerns on Claim 3, it is provided between the support | pillar and the support | pillar and the beam part provided in a pair is provided. Thereby, the deformation | transformation to the vehicle width direction of a support reinforcement part can be suppressed.

  In the invention which concerns on Claim 4, the area | region formed with a pair of support | pillar and a pair of beam part is made into the opening part which connects a center tunnel and a vehicle interior, A vehicle component is attached and fixed to this opening part. That is, the vehicle component is supported and supported by the support reinforcement portion by attaching and fixing the vehicle component to the region surrounded by the support reinforcement portion. The vehicle component can be firmly attached by supporting the vehicle component with the support reinforcing portion.

  In the invention according to claim 5, the front end portion of the outer member and the front end portion of the inner member form a substantially U-shaped front end opening, and the vehicle body mounting pin is inserted into the front end opening. The front end opening is formed by the outer member front end and the inner member front end. The outer member and the inner member are molded independently. For this reason, an outer member and an inner member can be shape | molded according to the direction where the vehicle body attachment pin is attached to the vehicle body. That is, the front end opening can be formed in accordance with the vehicle body mounting pin, and the degree of freedom of the mounting position of the vehicle body mounting pin is improved.

  In the invention according to claim 6, the inner member is formed to have substantially the same width and height as the outer member. Thereby, an inner member can be joined with respect to the whole back surface of an outer member, and a joining area can be enlarged. Thereby, the occurrence of sink marks formed during vibration welding can be suppressed. By suppressing the occurrence of sink marks, the appearance of the instrument panel is enhanced.

  In the invention which concerns on Claim 7, the reinforcement rib for reinforcing an outer member is formed in a reinforcement part only at the inner member side. That is, no reinforcing rib is formed on the outer member. Since no reinforcing rib is formed on the outer member, it is possible to prevent sink marks from occurring on the outer member surface. Since sink marks do not occur on the outer member surface, many reinforcing ribs can be formed. That is, the appearance of the instrument panel can be improved and the strength can be increased.

  In the invention which concerns on Claim 8, a reinforcement part is formed in truss shape by a cross sectional view. The truss shape can be easily formed by combining a flat shape with a V shape. That is, the shape for forming the inner member and the outer member can be simplified by forming the reinforcing portion into a shape that can be easily formed. By using the inner member and the outer member manufactured using such a mold, the manufacturing cost of the instrument panel is reduced.

It is a disassembled perspective view of the instrument panel which concerns on this invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. It is a figure explaining positioning of the inner member with respect to an outer member. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is operation | movement explanatory drawing at the time of carrying out the vibration welding of the inner member to an outer member. It is a figure explaining the basic principle of the prior art.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the instrument panel 10 includes a resin outer member 12 that is arranged on the vehicle compartment side and forms a design surface 11, and is bonded to the back surface of the outer member 12 and has a width with respect to the outer member 12. And an inner member 13 made of a resin having substantially the same height.

  The outer member 12 is formed in a substantially T-shape, and has a top plate portion 15 that spans the vehicle interior in the vehicle width direction, and a center tunnel that is lowered from the center of the top plate portion 15 and provided below ( 3 and the outer member support reinforcing portion 30a connected to the reference numeral 16).

  The top plate portion 15 is provided with a plurality of outlets 17 for blowing out the conditioned air toward the passenger compartment.

  The outer member support reinforcing portion 30a is suspended between the outer side struts 18 and 18 provided in pairs so as to be lowered from the top plate portion 15 and face the vehicle width direction, and the outer side struts 18 and 18. A pair of outer side beam portions 19, 19 provided in a pair so as to face each other in the vertical direction, and an area surrounded by the outer side support columns 18, 18 and the outer side beam portions 19, 19, communicated from the passenger compartment toward the center tunnel. And an opening 21 to be formed.

The inner member 13 is disposed toward the outlet 17 of the outer member 12 and is provided with duct grooves 22 and 22 for sending conditioned air, and an opening reinforcing portion 23 is provided in the center surrounded by the duct grooves 22 and 22. Inner member openings 24, 24, inner side struts 26, 26 that are disposed on the back surfaces of the outer side struts 18, 18 and form the closed cross-section struts 25, 25 together with the outer side struts 18, 18, and the outer side beam portions 19 and 19 and the inner side beam portions 28 and 28 which are disposed on the rear surfaces of the outer side beam portions 19 and 19 and form the closed cross-section beam portions 27 and 27 together with the outer side beam portions 19 and 19.
The support reinforcement part 30 is comprised by the support | pillars 25 and 25 and the beam parts 27 and 27. FIG.

  The beam portions 27 are provided between the support column 25 and the support column 25 so as to be provided as a pair. Thereby, the deformation | transformation to the vehicle width direction of the support reinforcement part 30 can be suppressed.

The instrument panel 10 is formed by joining an inner member 13 to an outer member 12.
The inner member 13 is formed to have substantially the same width and height as the outer member 12. Thereby, the inner member 13 can be joined to the entire back surface of the outer member 12, and the joining area can be increased. Thereby, the occurrence of sink marks formed during vibration welding can be suppressed. By suppressing the occurrence of sink marks, the appearance of the instrument panel 10 is enhanced.

The inner member 13 having substantially the same width and height as the outer member 12 means that the inner member 13 is large enough to be joined to the entire back surface of the outer member 12.
The instrument panel 10 in a state where the inner member 13 is joined to the outer member 12 will be described with reference to the next drawing.

  As shown in FIG. 2, the outer member 12 and the inner member 13 are formed in a three-dimensional shape. The hollow part 32 is formed by joining the inner member 13 to such an outer member 12.

A part of the hollow portion 32 serves as reinforcing portions 33, 33, and 34 that reinforce the outer member 12.
The reinforcing portion 33 is formed in a truss shape by covering the upper surface of the planar inner member 13 with the V-shaped outer member 12, and the reinforcing portion 34 is raised from the inner member 13 toward the outer member 12. 12 is provided with reinforcing ribs 35 for reinforcing 12.

  The outer member 12 is provided with a fastening hole 36 for attaching a component arranged on the instrument panel 10.

  A reinforcing rib 35 for reinforcing the outer member 12 is formed on the reinforcing portion 34 only on the inner member 13 side. That is, the reinforcing rib 35 is not formed on the outer member 12. Since the reinforcing rib 35 is not formed on the outer member 12, it is possible to prevent sink marks from being generated on the surface of the outer member 12 when the outer member 12 alone is injection-molded. Since no sink marks are generated on the surface of the outer member 12, many reinforcing ribs 35 can be formed. That is, the appearance of the instrument panel 10 can be improved and the strength can be increased.

  The reinforcing part 33 is formed in a truss shape in a sectional view. The truss shape can be easily formed by combining a flat shape with a V shape. In other words, the shape for forming the inner member 13 and the outer member 12 is simplified by making the reinforcing portion 33 into a shape that can be easily formed. By using the inner member 13 and the outer member 12 manufactured in such a mold, the manufacturing cost of the instrument panel 10 is reduced.

  As shown in FIG. 3, a part of the hollow portion 32 is a duct portion 38 formed by covering the duct groove 22 with the outer member 12.

  In addition, the other part of the hollow portion 32 is a support reinforcing portion 30 that spans the center tunnel 16. The support reinforcement part 30 is one of the reinforcement parts, and the support reinforcement part 30 is included in the reinforcement part.

The support reinforcing portion 30 includes a support column 25 connected from the top plate portion 15 toward the center tunnel 16, and a closed pair that extends from the support column 25 toward the vehicle width direction (the front and back of the drawing) and is provided in a pair in the vertical direction. Cross-sectional beam portions 27 and 27 are provided.
A vehicle part 39 made of a storage device, audio, or the like and indicated by an imaginary line is attached to the opening 21.

  An area formed by the pair of support columns 25 (disposed in pairs in the front and back direction of the drawing) and the pair of beam portions 27 and 27 is an opening portion 21 that communicates from the passenger compartment toward the center tunnel 16. A vehicle component 39 is attached and fixed to 21. That is, the vehicle component 39 is supported by the support reinforcement portion 30 by attaching and fixing the vehicle component 39 to the region surrounded by the support reinforcement portion 30. By supporting the vehicle component 39 with the support reinforcing portion 30, it can be firmly attached.

  A front end portion formed by an outer member front end portion 41 that is an end portion in the vehicle body direction of the outer member 12 and an inner member front end portion 42 that is disposed at a position facing the outer member front end portion 41 is an outer member front end. A front end opening 43 formed in a substantially U shape by forming the portion 41 away from the inner member front end portion 42 and forming the inner member front end portion 42 away from the outer member front end portion 41; The vehicle body attachment pin 44 attached to the vehicle body is inserted into the front end opening 43.

  The outer member front end portion 41 and the inner member front end portion 42 form a substantially U-shaped front end opening 43, and the vehicle body attachment pin 44 is inserted into the front end opening 43. The front end opening 43 is formed by the outer member front end 41 and the inner member front end 42. The outer member 12 and the inner member 13 are molded independently. For this reason, the outer member 12 and the inner member 13 can be molded according to the direction in which the vehicle body mounting pins 44 are mounted on the vehicle body. That is, the front end opening 43 can be formed in accordance with the vehicle body mounting pin 44, and the degree of freedom of the mounting position of the vehicle body mounting pin 44 is improved.

  In addition, the instrument panel 10 can be attached at an accurate position with respect to the vehicle body.

  The hollow portion 32 includes a duct portion 38 through which conditioned air can be conducted, and reinforcing portions (reference numerals 33 and 34 in FIG. 2) that reinforce the outer member 12. Since the hollow portion 32 is used, there is no need to separately arrange a duct for conducting conditioned air and a reinforcing material for reinforcing the outer member. The number of parts is reduced, which contributes to the weight reduction of the instrument panel 10.

  The support reinforcing portion 30 is stretched from the top plate portion 15 toward the center tunnel 16. The weight of the top plate portion 15 is transmitted to the center tunnel 16 via the support reinforcing portion 30. By supporting the top panel 15 with the center tunnel 16, deformation of the instrument panel 10 can be suppressed.

  The inner member 13 is joined to the outer member 12 by temporarily fastening the inner member 13 to the outer member 12 and performing vibration welding. The method of temporarily fixing the inner member 13 to the outer member 12 will be described with reference to the next drawing.

As shown in FIG. 4, positioning pins 46, 46 are arranged on the outer member 12, and positioning holes 47, 47 into which the positioning pins 46, 46 are inserted are formed in the inner member 13.
The outer member 12 is overlapped with the inner member 13 so that the positioning pins 46 and 46 are inserted into the positioning holes 47 and 47. In this way, temporary fixing is performed.

The instrument panel 10 according to the present invention joins the inner member 13 to the outer member 12 to form a duct portion (FIG. 3, reference numeral 38). From the viewpoint of preventing wind leakage, it is particularly required to join the inner member 13 to the outer member 12 at an accurate position. By disposing the positioning pin 46 in the outer member 12 and the positioning hole 47 in the inner member 13, the instrument panel 10 that joins the inner member 13 to the outer member 12 can be accurately manufactured.
A method of reinforcing the outer member 12 will be described with reference to the next drawing.
Details of the opening will be described in the next figure.

As shown in FIG. 5, the inner member 13 is joined to the outer member 12 so that the stepped portions 48, 48 of the outer member 12 come into contact with the tips of the inner side struts 26, 26. At this time, the tip of the outer side column 18 is also applied to the inner side column 26.
The column 25 composed of the inner column 26 and the outer column 18 is formed in a closed cross-section.

By disposing the inner side column 26 on the back surface of the outer side column 18, the outer side column 18 is supported and reinforced. By adopting such a structure, vehicle components such as a storage device and audio attached to the opening 21 are firmly fixed.
The operation | work which joins the outer member 12 to the inner member 13 is demonstrated with a next figure.

As shown in FIG. 6, a weld portion 48 is provided on the surface of the inner member 13.
After the outer member (FIG. 1, reference numeral 12) is placed on the upper surface of the inner member 13 and temporarily fixed, vibration suitable for the vibration welding method is performed in the direction of the white arrow. Due to this vibration, frictional heat is generated between the outer member and the inner member 13, the joining surface is melted, and the inner member 13 is joined to the back surface of the outer member 12 at the welding portions 48 (many) indicated by black lines.

In addition, the welding part 48 arrange | positioned around the duct groove | channel 22 must be arrange | positioned continuously in order to prevent the leakage of an air conditioning wind.
On the other hand, the inner side strut 26 where the conditioned air does not flow may be provided with the welded portion 48 intermittently.

  The instrument panel of the present invention is suitable for a four-wheeled vehicle.

  DESCRIPTION OF SYMBOLS 10 ... Instrument panel, 11 ... Design surface, 12 ... Outer member, 13 ... Inner member, 15 ... Top plate part, 16 ... Center tunnel, 21 ... Opening part, 25 ... Post, 27 ... Beam part, 30 ... Support reinforcement 32, hollow portion, 33, 34, reinforcing portion, 35 ... reinforcing rib, 38 ... duct portion, 39 ... vehicle component, 41 ... outer member front end portion, 42 ... inner member front end portion, 43 ... front end opening portion, 44 ... Body mounting pin.

Claims (8)

An instrument panel comprising an outer member that forms a design surface, and an inner member that is partly joined to the back surface of the design surface and that forms a hollow portion between the outer member and the other member,
The said hollow part is provided with the duct part which can conduct an air-conditioning wind, and the reinforcement part which reinforces the said outer member, The instrument panel characterized by the above-mentioned.   The reinforcing portion is supported from the top plate portion that extends over the vehicle interior in the vehicle width direction toward a center tunnel provided below the top plate portion, and supports the top plate portion. The instrument panel according to claim 1, further comprising a reinforcing portion.   The support reinforcing portion is connected to the center tunnel from the top plate portion and is provided with a pair of closed cross-section columns provided in the vehicle width direction, and a pair of the support reinforcement portions extending vertically between the columns and the columns. The instrument panel according to claim 2, further comprising a beam portion provided on the instrument panel.   In the outer member, an area formed by the pair of support columns and the pair of beam portions is an opening that communicates from the passenger compartment toward the center tunnel, and a vehicle component is attached and fixed to the opening. The instrument panel according to claim 3. A front end portion formed by an outer member front end portion which is an end portion of the outer member in the vehicle body direction front and an inner member front end portion disposed at a position facing the outer member front end portion is the outer member front end portion. The inner member front end portion is formed so as to be separated from the inner member front end portion or the inner member front end portion is formed so as to be separated from the outer member front end portion.
The instrument panel according to any one of claims 1 to 4, wherein a vehicle body attachment pin attached to the vehicle body is inserted into the front end opening.   The instrument panel according to any one of claims 1 to 5, wherein the inner member is formed to have substantially the same width and height as the outer member.   The instrument panel according to any one of claims 1 to 6, wherein a reinforcing rib for reinforcing the outer member is formed only on the inner member side in the reinforcing portion.   The instrument panel according to claim 1, wherein the reinforcing portion includes a reinforcing portion formed in a truss shape in a cross-sectional view.

Images