JP2000318028A - Method for laminating skin to vehicle interior member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably prevent the formation of a wall part caused by the remaining of a lamination scheduled part. SOLUTION: When a sheet-like skin material S softened under heating is sucked under vacuum to be closely bonded to the outer surface of the base material 12 set to a vacuum mold 30, the region Sb connected to one side of the lamination scheduled part Sa positioned above a recessed part 16 of the sheet-like skin material S is held so as not to come into contact with the outer surface of the base material 12. Subsequently, the connection region Sb is pulled in the direction spaced apart from the recessed part 16 to appropriately stretch the lamination scheduled part Sa along the recessed part 16. By this constitution, the lamination scheduled part Sa is successively laminated to the surfaces 14a, 15a of the projected parts 14, 15 facing to the recessed part 16 from the side opposite to the connection region Sb.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a skin to a vehicle interior member, and more particularly, to a vehicle interior member such as an instrument panel having a concave portion between a plurality of convex portions. The present invention relates to a method of attaching a skin made of a sheet-like skin material to an outer surface of a base material having a large change by vacuum forming.

[0002]

2. Description of the Related Art In a passenger compartment of a vehicle such as a passenger car,
Various vehicle interior components such as instrument panels, floor consoles, door trims, and pillar garnishes are installed. Of these, the instrument panel installed in front of the passenger compartment has a function as a base for installing various in-vehicle devices and devices, for example, as shown in FIG. 10, and includes a speedometer and various warning lights. A unitized instrument panel 20 is provided in the hood section 14 formed on the driver's seat side,
In many cases, a glove box 21 for storing small articles and the like is provided on the passenger side, and an air conditioning operation panel 22 and an audio unit 23 of an air conditioning unit (not shown) are installed in the center console unit 15. In order to improve the visibility and operability of the instrument panel 20, the air conditioning operation panel 22, the audio unit 23, and the like, the hood section 14 and the center console section 15 are provided.
Often bulge upward.

[0003] The instrument panel 10 includes:
Since it is a large vehicle interior member that extends over almost the entire width in front of the passenger compartment, it also has a function to enhance the decoration effect. Points. Therefore, by attaching various kinds of skins T whose surfaces are appropriately subjected to “texture” to the panel substrate 11 made of a hard synthetic resin injection-molded into a required shape, the texture is improved. As the skin T, in addition to the resin sheet, synthetic leather, fabric, or any other single layer, a cushion layer made of polyethylene foam, foam, or the like is adhered to the back surface of these as a surface layer. Some are composed of multiple layers. The instrument panel 10 shown in FIG. 10 is configured such that an upper panel body 12 and a lower panel body 13 are joined to form a panel base material 11, and a skin T is attached to only the upper panel body 12.

[0004] The skin T is attached to the panel substrate 11 by, for example, attaching the skin T to the outer surface of the panel substrate 11.
Is carried out by a method of directly affixing, or a method of fixing via a foam to be foamed between the panel base material 11 and the like. Among them, the former method of attaching the skin uses a vacuum forming die 50 as shown in FIGS. 11 and 12, and the panel base material 11 (the upper panel) is formed into a required shape in advance and an adhesive is applied to the surface. The body 12) is set on the vacuum forming die 50 in an air suction state, and the surface S ₁ is subjected to “texture” processing, and the heated and softened sheet-like skin material S is vacuumed on the surface of the panel base material 11. By sticking by suction, the attachment to the panel substrate 11 and the formation of the skin T are performed in the same step.

[0005]

By the way, in the instrument panel 10 illustrated in FIG. 10, the upper panel body 12 has a bucket shape, and the hood portion 14 and the center console portion 15 are outside as described above. The hood portion 14
Since the center console section 15 and the center console section 15 are formed adjacent to each other, a recess 16 having a substantially V-shaped front surface is relatively defined between the two sections 14 and 15. For this reason, in the conventional skin pasting method using the vacuum mold 50 described above,
The skin T is attached to the upper panel body 12 having such a large shape change.
In the case of attaching the skin T, it is difficult to suitably attach the epidermis T due to the following problem.

More specifically, referring to FIGS. 11 and 12, in the initial stage of the sticking process in which the sheet-like skin material S descends and approaches, the hood portion 14 of the upper panel body 12 set on the vacuum forming die 50 is used. Point A at the front end of the upper surface, and B at the front end of the upper surface of the center console unit 15.
Point comes into contact with the sheet-like skin material S first
(See FIG. 11). Then, in the second stage of the attaching process in which the sheet-like skin material S has been lowered to the predetermined position, the vacuum forming die 5
Under the air suction of 0, substantially the entire surface of the upper panel body 12, the point C at the rear end edge, and the center console section 15
The sheet-like skin material S comes into contact with the entire upper surface 51 of the molding die 50 including the point D at the lower end portion of the front surface (see FIG. 12). However, immediately after the lowering of the sheet-like skin material S is completed, as shown in FIGS. 12A and 12B, the front left surface 1 of the hood portion 14 facing the recess 16 is formed.
4a and the front right surface 1 of the center console section 15
The sheet-like skin material S has not yet come into contact with 5a. Therefore, the sheet-shaped skin material S is not
After contacting the entire upper surface of the sheet material, in the process of sucking the air interposed in the recess 16 by the air suction of the molding die 50, the non-contact portion ( (For convenience, it will be referred to as “pasted part Sa”)
Gradually come into contact with the respective surfaces 14a and 15a.

By the way, since an adhesive for adhering the skin T is applied to the surface of the upper panel body 12 prior to setting in the vacuum forming die 50, the back surface S of the sheet-like skin material S is formed. _{After 2} contacts the upper panel body 12, the movement of this contact portion with respect to the upper panel body 12 becomes completely impossible. That is, the pasting of the portion to be pasted Sa into the depression 16 is performed by fixing the sheet-like skin material S at each of the points A, B, C, and D located around the depression 16. Thus, the portion Sa to be pasted is gradually sucked from the vicinity of the points C and D to the respective surfaces 14a and 15a to come into close contact therewith. However, the instrument panel 10
Then, as shown in FIG.
The length L in the front-rear direction of “a” is considerably longer than the length M in the front-rear direction of the deepest portion of the recess 16. Therefore, each of the surfaces 14a, 15a facing the recess 16
At the completion stage of the sticking step in which the sticking of the sheet-like skin material S to the sheet-like material S is completed, as shown in FIG. A portion (referred to as a “bridge” in the art) N was formed, resulting in a defective product.

[0008]

SUMMARY OF THE INVENTION The present invention has been proposed to suitably solve the above-mentioned problems, and when a sheet-like skin material is attached to a substrate, the surface of each convex portion facing the concave portion of the substrate is provided. While holding one side adjacent to the portion to be pasted to be pasted so as not to contact the substrate, the side to be pasted is stretched by appropriately pulling this side and pasting to each of the surfaces in a state where it is appropriately stretched. Accordingly, it is an object of the present invention to provide a method of attaching a skin to a vehicle interior member in which the formation of a wall portion due to the remaining portion to be attached is appropriately prevented.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to achieve the intended object, a method for attaching a skin to a vehicle interior member according to the present invention comprises a plurality of convex portions bulging outwardly adjacent to each other. A method of attaching a skin of a vehicle interior member in which a skin made of a sheet-like skin material is attached by vacuum molding to a base material having a required shape in which a concave portion is defined between portions and an adhesive is applied to an outer surface thereof. In the above, when the heated and softened sheet-like skin material is vacuum-sucked to and adhered to the outer surface of the base material set in a vacuum forming mold, the sheet-like skin material is to be pasted over the concave portion. And holding a portion connected to one side thereof so as not to contact the outer surface of the base material, and then pulling the connected portion in a direction away from the concave portion, and the portion to be pasted. As appropriate along the recess After allowed to Zhang, the pasting narrowing scheduled portion with respect to the surface of each convex section of the respective facing the recess, said the continuous portion position is characterized in that so as to be successively bonded written from the opposite side.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle interior member mounting method according to the present invention. In this embodiment,
The instrument panel 10 shown in FIG. 10 is illustrated as an example of a vehicle interior member, and a case where a skin T is attached to an upper panel body 12 of the panel base material 11 is illustrated. Since the configuration of the instrument panel 10 has been described in the section of the related art, a detailed description thereof will be omitted, and the same members as those already described will be denoted by the same reference numerals.

FIG. 8 is a perspective view schematically showing a vacuum forming die for suitably carrying out the method of attaching the skin of the present embodiment, and FIG. 9 is a sectional view of the vacuum forming die shown in FIG. It is a sectional side view which is broken and shown by the -IX line. This vacuum forming die 30
Set part 3 for the upper panel body 12 of the panel base material 11
2 and a bottom plate 33 that covers a lower opening of the main body 31, and the entire internal space 3 is formed.
4 shows a hollow body formed. The setting unit 32
It is formed in a shape that can be aligned with the back side of the upper panel body 12, and bulges 32 a and 32 b are formed at respective portions corresponding to the hood portion 14 and the center console portion 15. A plurality of communicating air holes 35 are opened at predetermined positions. On the other hand, an air conduit 37 connected to an air pressure adjusting device 38 is connected to an opening 36 provided substantially at the center of the bottom plate 33. Therefore, when the air pressure adjusting device 38 performs an air suction operation, an appropriate negative pressure is formed in the internal space 34, so that external air is sucked into the internal space 34 through each air circulation hole 35, and the air pressure is reduced. When the adjusting device 38 performs the air delivery operation, an appropriate positive pressure is formed in the internal space 34, so that the air in the internal space 34 gushes out of the main body 31 through the air circulation holes 35. .

Also, in the vacuum forming die 30, in the front side of the main body 31, at a portion adjacent to the bulging portions 32a and 32b, a bonding assistant for assisting the bonding of the portion to be bonded Sa is provided. A mechanism 40 is provided. The sticking assist mechanism 40 is fixed to an inner surface of a circular hole portion 39 formed in the main body portion 31 so as to be upwardly openable and movable up and down in sliding contact with the inner surface of the circular hole portion 39, and is fixed to the lower surface of the bottom plate 33 in an inverted state. It comprises a fluid pressure cylinder 42 in which the tip of a rod 43 extending upward is fixed to the lower surface of the cylindrical body 41.
That is, the rod 43 is retracted from the fluid pressure cylinder 42.
(Down), the cylinder 41 is completely immersed in the circular hole 39 and the fluid pressure cylinder 42
Is controlled so that the rod 43 moves forward (ascends), the cylindrical body 41 projects from the circular hole 39. Thus, for example, when lowering the sheet-like skin material S from above the upper panel body 12 set in the setting portion 32, if the columnar body 41 of the pasting assist mechanism 40 is raised, the sheet-like skin material S Even if S descends to the predetermined position, the front portion Sb connected to the portion to be pasted Sa is not attracted and adhered to the surface of the upper panel body 12 or the upper surface 31a of the molding die 30. The fluid pressure cylinder 42 is automatically driven and controlled by, for example, a control unit (not shown).
The upper end is formed in a hemispherical shape so that the frictional resistance with the sheet-like skin material S is reduced.

As shown in FIG. 1, the sheet-like skin material S is appropriately held in an extended state with each edge held by a clamp member 45 composed of clamp pieces 46a, 46b, 46c and 46d. Is done. The clamp piece 46d adjacent to the front of the pasting assist mechanism 40 can be slid to the front of the vacuum forming die 30 by a predetermined moving means (not shown). That is, when the clamp piece 46d, which clamps the sheet-like skin material S at a predetermined position of the front end edge, moves forward, as described later, the sheet-like skin material S located above the depression 16 Is to be appropriately stretched.

Next, a method for attaching a skin to a vehicle interior member of the present embodiment using the vacuum forming die 30 configured as described above will be described with reference to FIGS.

First, as shown in FIG. 8, the upper panel body 12 of the panel base material 11, which has been injection-molded into a required shape in the previous step, is set and fixed to the set portion 32 of the vacuum forming die 30. That is, the upper panel body 12 is
By aligning the hood portion 14 with the hood portion 2a and aligning the center console portion 15 with the bulging portion 32b, the positioning can be easily performed with respect to the setting portion 32. The upper panel body 12 set in the setting section 32 is
And the front end of the upper surface of the center console portion 15 are fixed to the posture of the highest position (FIG. 2). Prior to the downward movement of the sheet-like skin material S, the pasting assisting mechanism 40 controls the fluid pressure cylinder 42 so that the rod 43 advances, so that the columnar body 41 projects upward.

Next, the vacuum forming die 30 is held in an air suction state, and the skin T is formed and pasted. That is, as shown in FIG. 1, one sheet-like skin material S formed as the skin T is subjected to required “texture” processing on the surface S _1, and the clamp pieces 46 a, 46 b, 46 of the clamp member 45.
At c, the left and right edges and the rear edge are sandwiched, and the front edge is sandwiched by the clamp pieces 46d, and is heated to a predetermined temperature by a heater or the like (not shown) and softened. Such a sheet-like skin material S is formed into a vacuum mold 3
After being positioned above 0, the sheet-shaped skin material S is moved downward (the sheet-shaped skin material S may be fixed and the vacuum forming die 30 may be moved upward), and the sheet-shaped skin material S is moved to the upper panel so that the main body 31 is covered. Move closer to body 12.

In the first stage of the sticking step in which the sheet-shaped skin material S comes close to the upper panel body 12, FIG.
As shown in, the point B on the upper surface front portion of the point A and the center console unit 15 in the upper surface front portion of the hood portion 14, the rear surface S ₂ of the sheet-like skin material S comes to first contact. Since the adhesive is applied to the entire surface of the upper panel body 12 as described above, the points A and B serve as reference points for sticking the sheet-like skin material S.

As the sheet-like skin material S moves further downward and approaches the upper panel body 12, the upper panel body 1
Pasting gradually progresses from the part that contacts the surface of No. 2.
Then, in the second stage of the attaching process in which the sheet-like skin material S has been lowered to a predetermined position and lowered to the same level as the upper surface 31a of the main body portion 31, the sheet-like skin material S has a considerable portion including the point C at the rear edge. The skin material S comes into contact. Therefore, in a portion where the main body 31 and the sheet-like skin material S are in close contact with each other, the residual air interposed between the both 31 and S is removed by the air suction by the air pressure adjusting device 38.
5, the sheet-like skin material S is vacuum-sucked to the surface of the upper panel body 12 and comes into close contact therewith.

However, since the cylindrical body 41 of the pasting assisting mechanism 40 protrudes upward, the cylindrical body 41 is appropriately provided before the sheet-like skin material S is completely lowered.
Is a predetermined portion of the sheet-like skin material S, that is, a front portion Sb connected to one side (front side) of the portion to be pasted Sa.
Comes into contact with Therefore, in the second stage of the attaching process, as shown in FIG. 3, the sheet-like skin material S comes into contact with the upper surfaces of the hood portion 14 and the center console portion 15 by suction, but the adhering portion Sa Is not in contact with the upper surface 31a of the main body 31.

When the downward movement of the sheet-like skin material S is completed, as shown in FIG. 4, the clamp piece 46d of the clamp member 45 is slid horizontally forward as a third stage of the attaching process, and The portion to be pasted Sa located above the depression 16 is appropriately extended forward. At this time, the portion Sa to be pasted is pulled forward and downward.
The portion located between the point and the point B gradually becomes
It will move down inside. Therefore, the portion Sa to be pasted comes into contact with the surfaces 14a and 15a from the side of the point C, and is vacuum-sucked from the contacted portion and comes into close contact therewith.

Next, as shown in FIG. 4, after the portion to be pasted Sa is pasted to the deepest portion of the recess 16 (the highest position when set in the vacuum mold 30), As shown in FIG.
Is controlled so that the rod 43 retreats, whereby the cylindrical body 41 is gradually moved downward. As a result, the portion Sa to be pasted is further extended on both surfaces 14a,
It is pasted on 15a.

As shown in FIG. 6, when the cylindrical body 41 of the sticking assist mechanism 40 is completely immersed in the circular hole 39, the contact of the cylindrical body 41 with the sheet-like skin material S is released. The front portion Sb comes into complete contact with the upper surface 31a of the main body 31. Thereby, the remaining air interposed between the portion to be pasted Sa and the recess 16 is sucked from the air circulation hole 35 by the air suction by the air pressure adjusting device 38, and the respective surfaces 14a facing the recess 16 are formed. , 15a, the portion Sa to be pasted is vacuum-sucked and comes into close contact. At this time, the part to be pasted S
Since a is appropriately held in an extended state by the clamp piece 46d, it is finally attached to the surfaces 14a and 15b without any surplus portion.

When the attachment of the skin T to the surface of the upper panel body 12 is completed after the sheet-like skin material S is pasted, the upper panel body 12 is set in a vacuum forming die 30 as shown in FIG. Remove from part 32. In addition, when the air pressure adjusting device 38 is operated to send out air when the upper panel body 12 is removed from the inner space 3 through the air circulation holes 35.
Since the air inside 4 is blown out to the outside of the main body 31, the demolding operation can be easily performed. Then, the excess skin portion Ta protruding from the end of the upper panel body 12 (including the front side portion Sb)
Is cut off by a cutter or the like in a later step.

As described above, in the method for attaching the skin according to the present embodiment, the sheet-like skin material S that has been heated and softened is
Upon closely adhering to the outer surface of the upper panel body 12 set on the set portion 32 of the vacuum forming die 30 by vacuum suction,
The front part Sb continuously provided on the front side of the part to be pasted Sa located above the recessed part 16 is held by the columnar body 41 of the pasting assist mechanism 40 so as not to contact the outer surface of the upper panel body 12. Accordingly, the movement of the front side of the portion to be pasted Sa with respect to the upper panel body 12 is not restricted. On this premise, the to-be-pasted portion Sa is pulled forward by slidingly displacing the clamp piece 46d, so that the to-be-pasted portion Sa is formed by the hood portion 14 and the center console portion 15 facing the recessed portion 16. The surfaces 14a and 15a are sequentially brought into contact with each other from the rear side (the side opposite to the front side part) to be suction-contacted. That is, since the to-be-pasted portion Sa is sequentially pasted from the rear side in a stretched state, there is no surplus portion at all in the to-be-pasted portion Sa. The disadvantage of forming a wall is preferably avoided.

The interior parts of the vehicle to which the present invention is applied are not limited to the instrument panel 10 of the above-described embodiment, but may be various interior parts such as a floor console, a door trim, and a pillar garnish. .

Further, the configuration of the pasting assist mechanism 40 provided in the vacuum forming die 30 used for carrying out the skin pasting method of the present embodiment is not limited to the above-described one. , The front part Sb of the part Sa to be pasted
Any other form may be used as long as it functions properly so as not to contact the upper panel body 12.

[0027]

As described above, according to the method for attaching a skin to a vehicle interior member according to the present invention, a sheet-like skin material that has been heated and softened is applied to the outer surface of a base material set in a vacuum forming die. At the time of suction and close contact, while holding the portion connected to one side of the portion to be pasted positioned above the concave portion so as not to contact the outer surface of the base material, pulling the connected portion By extending the to-be-pasted portion, the to-be-pasted portion comes into contact with the surface facing the recessed portion from the side opposite to the site in order to be brought into suction contact. Therefore, since the portion to be pasted is successively pasted from one side in a stretched state, there is no surplus portion at all at the portion to be pasted, and a wall portion is formed in the hollow portion by the skin as in the conventional case. There is an advantage that such inconveniences as described above can be suitably avoided.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a preparation state of a sheet-like skin material to be stuck when a method of sticking a skin according to a preferred embodiment of the present invention is carried out.

FIG. 2 is a side cross-sectional view of a vacuum forming mold in which an upper panel body set in a setting section is broken at a recess thereof, and shows a state in which a sheet-like skin material is in contact with the upper panel.

3 is a side sectional view of the same vacuum forming die as that of FIG. 2, showing a state in which the lowering of the sheet-like skin material is completed and a column of the pasting assist mechanism is receiving the sheet-like skin material. Is shown.

FIG. 4 is a side sectional view of the same vacuum forming die as FIG. 2, showing a state where a portion to be pasted is pasted by moving a clamp piece to extend a sheet-like skin material.

FIG. 5 is a side sectional view of the same vacuum forming die as that of FIG. 2, showing a state where a portion to be pasted is pasted while moving a clamp piece and lowering a cylindrical body.

FIG. 6 is a side sectional view of the same vacuum forming mold as FIG. 2, showing a state in which a portion to be pasted has been pasted.

FIG. 7 is a side sectional view of the same vacuum forming die as that of FIG. 2, showing a state in which the upper panel body, to which the skin has been mounted, is removed from the set portion.

FIG. 8 is a schematic perspective view showing a vacuum forming die for carrying out the method for attaching a skin of the present embodiment in a state where an upper panel body is set.

FIG. 9 is a side sectional view showing a vacuum forming die for carrying out the method for attaching a skin according to the present embodiment, which is cut along line IX-IX in FIG.

FIG. 10 is a schematic perspective view showing the overall configuration of an instrument panel as a vehicle interior member.

FIG. 11 is an explanatory view showing a conventional method of attaching a skin to an instrument panel as a vehicle interior member,
(a) is a front view showing the state in which the sheet-like skin material has contacted the uppermost part of the upper panel body, and (b) is a side view thereof.

FIG. 12 is an explanatory view showing a conventional method for attaching a skin to an instrument panel as a vehicle interior member,
(a) is a partially cutaway front view showing a state in which the sheet-like skin material has been lowered to a predetermined position, and (b) is a side view partially cut away showing the state.

13A and 13B are explanatory views showing problems inherent in the conventional epidermis bonding method, wherein FIG. 13A is a front view showing a wall formed in a depression of an instrument panel, and FIG. FIG. 3 is a side sectional view showing a) at a cutaway portion.

[Explanation of symbols]

 12 Upper panel body (base material) 14 Hood part (convex part) 14a Surface 15 Center console part (convex part) 15a Surface 16 Depressed part (concave part) 30 Vacuum forming die S Sheet-shaped skin material Sa Part to be pasted Sb Front part (Consecutive part) T epidermis

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomokazu Kurume 3-1-136 Imaikecho, Anjo-shi, Aichi Pref. Innoac Corporation Anjo Works (72) Inventor Hiroyuki Kumazaki 3-1-1 Imaikecho, Anjo-shi, Aichi Prefecture No. 36 Inoac Corporation Anjo Office F-term (reference) 3D044 BA12 BB01 BC03 4F208 AC03 AH25 AH26 MA01 MB01 MC02 MH06 MJ21 MK01

Claims (1)

[Claims] 1. A base material having a required shape in which a concave portion (16) is defined between a plurality of convex portions (14, 15) bulging outward adjacent to each other, and an adhesive is applied to an outer surface thereof. (12), in a method of attaching a skin (T) made of a sheet-shaped skin material (S) to a skin of a vehicle interior member in which the skin (T) is attached by vacuum molding, the sheet-shaped skin material heated and softened (S) The vacuum mold (30)
When vacuum suction is applied to the outer surface of the base material (12) set in contact with the base material (12), the concave portion in the sheet-like skin material (S)
The part to be pasted (16) located above (16), the part (Sb) connected to one side thereof is held so as not to contact the outer surface of the base material (12), , The connecting portion (Sb)
Is pulled in a direction away from the concave portion (16), and after the portion to be pasted (Sa) is appropriately stretched along the concave portion (16), the portion to be pasted (Sa) becomes the concave portion (16). A vehicle characterized by being sequentially pasted to the surface (14a, 15a) of each convex portion (14, 15) facing from the side opposite to the connecting portion (Sb). How to attach the skin to interior parts.