JP3027576B1 - Vehicle interior panel mounting structure - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To facilitate level adjustment work of an interior panel. SOLUTION: A receiving bone member 3 is fixed to a structure 2 of a vehicle by welding. For the receiving bone member 3, the interior panel 1 of the vehicle
Is fastened and fixed by using the mounting small screw 4 and the leaf spring 5.
The leaf spring 5 is bonded in advance to the back surface of a portion of the interior panel 1 to which the interior mounting panel 1 is attached using the mounting screw 4. The thread portion of the mounting small screw 4 is coated with an anti-loosening agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for an interior panel of a vehicle such as a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 (a), 4 (b) and 4 (c), a passenger compartment interior panel 1 of a vehicle such as a railway vehicle has a decorative panel (about 1.4 mm thick) made of, for example, melamine resin. )
And is fastened and fixed to the receiving bone member 3 by using a small machine screw 4.

Since the receiving bone member 3 has a welding structure fixed to the vehicle body 2 by welding, the welding surface causes the mounting surface of the passenger compartment interior panel 1 and the mounting surface of the receiving bone member 3 to move. Usually they do not match. Therefore, in order to fasten and fix the passenger compartment interior panel 1 to the receiving bone member 3, the level of the mounting surface of the receiving bone member 3 is adjusted so that the mounting surface of the passenger compartment interior panel 1 is along the mounting surface of the receiving bone member 3. Adjustments have been made.

[0004] That is, when the passenger compartment interior panel 1 is fastened and fixed to the receiving bone member 3, first, for example, a relatively easy-to-process hard board plate or a vinyl chloride resin plate is attached to the mounting surface of the receiving bone member 3. The level adjusting liner 6 is attached with an adhesive. Then, another level adjusting liner is attached thereon, or a part of the attached level adjusting liner is scraped off to adjust the level of the mounting surface of the receiving bone member 3. . The guest room interior panel 1
Of the receiving bone member 3 adjusted by the level adjustment liner. Thereafter, the passenger compartment interior panel 1 is usually fastened and fixed to the receiving bone member 3 by using the small screws 4 for mounting.

When the passenger compartment interior panel 1 is fastened and fixed to the receiving bone member 3 as described above, the level adjustment liner 6 must be used to attach the passenger compartment interior panel 1 prior to the fastening. It is necessary to adjust the surface so as to be along the mounting surface of the receiving bone member 3. Then, after such adjustment is completed, the passenger compartment interior panel 1 is fastened and fixed to the bone member 3 using the mounting small screws 4.

[0006]

As the level adjusting liner 6 is usually made of a material which conforms to the standard of flame retardancy, the level adjusting liner 6 is attached or cut off for level adjustment. At present, it takes a considerable amount of time to do the work, and it is a waste of time more than necessary.

[0007] In order to solve such a problem, it has been strongly demanded to improve the structure of the cabin interior panel so that the level can be easily adjusted. In addition, there is a demand that the number of small mounting screws 4 for mounting and fixing the passenger compartment interior panel 1 to the receiving bone member 3 be reduced as much as possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object of the present invention is to provide a mounting structure of a vehicle interior panel in which the level adjustment operation of the interior panel is easy.

[0009]

According to a first aspect of the present invention, a receiving bone member is fixed to a vehicle structure by welding, and an interior panel is attached to the receiving bone member from the front side using mounting screws. a mounting structure of the interior panel of the vehicle, between the receiving bone member and the interior panel having a site is mounted using the mounting screws, the said interior panel
A metal spring biasing in a direction away from the receiving bone member , wherein the metal spring has a symmetrical shape;
In, it is located in the central part and is fixed to the back of the interior panel
Plate-shaped horizontal base, and one end connected to both sides of the horizontal base.
Diagonally so as to form an obtuse angle with the horizontal base
An inclined portion extending to the other end of the inclined portion;
It has a flat base and a tip extending substantially in parallel . Here, as the metal spring, various springs such as a leaf spring, a disc spring, and a coil spring can be used. It is desirable to maintain it.

According to the first aspect of the present invention, the metal spring is located at a position where the interior panel is attached to the receiving bone member using the mounting screw. The metal spring has an appropriate reaction force that urges the interior panel away from the bone member. Since the amount of deflection of the metal spring changes according to the amount of screwing of the mounting screw, the level of the interior panel continuously changes accordingly. At the time of the change, the interior panel is elastically held at a position corresponding to the screwing amount of the mounting screw by the reaction force of the metal spring without rattling. That is, even if the screwing amount of the mounting screw is increased or decreased, a suitable reaction force is applied to the interior panel from the metal spring, and the interior panel is elastically held at a position corresponding to the screwing amount of the mounting screw. You. In particular, the metal spring has an inclined portion and a horizontal base.
A plate with a bilaterally symmetrical shape in which the tips are sequentially connected
Since the spring is used, the amount of deflection of the metal spring changes greatly.
And the level adjustment range of the interior panel is widened.
Can be

Therefore, over a wide range in which the metal spring can bend, in the screwing direction of the mounting screw,
The level of the interior panel can be adjusted steplessly. In this way, since the level of the interior panel can be adjusted, there is no need to attach or cut the level adjustment liner. By simply adjusting the screwing amount of the mounting screw, the level adjustment between the interior panels can be easily performed within a range in which an appropriate reaction force can be received from the metal spring.

According to a second aspect of the present invention, in the mounting structure for an interior panel of a vehicle according to the first aspect, the metal spring is previously fixed to a back surface of a portion of the interior panel to which the interior panel is attached using a mounting screw. It is fixed. Here, the fixing by the fixing means includes not only chemical fixing using an adhesive or the like, but also, for example, mechanical fixing in which a spring locking portion is provided on the back side of the interior panel and locked there.

According to the second aspect of the present invention, since the metal spring is fixed in advance to the portion of the interior panel where the mounting screw is used by the fixing means, the metal spring is sensitive to the screwing of the mounting screw. It reacts and bends according to the amount of screwing in, and immediately applies an appropriate reaction force to the interior panel. Therefore, the position (level) of the interior panel is elastically held by an appropriate reaction force of the metal spring.

According to a third aspect of the present invention, in the mounting structure for an interior panel of a vehicle according to the first or second aspect, the mounting screw includes:
The thread portion is coated with an anti-loosening agent.

According to the third aspect of the present invention, since the thread of the mounting screw is coated with the anti-loosening agent, a necessary friction holding force is generated between the mounting screw and the receiving bone member. Become. Therefore, even if the screwing amount of the mounting screw is increased or decreased for level adjustment, the mounting screw is held in the adjusted state, and the mounting screw is not loosened.

[0016]

[0017]

According to a fourth aspect of the present invention, in the vehicle interior panel mounting structure according to any one of the first to third aspects, the interior panel forms a small ceiling portion between a side portion of the passenger compartment and a ceiling portion. And has a laminated structure in which a decorative plate, a core material, and a back plate are sequentially laminated from the front side.

According to the fourth aspect of the present invention, since the interior panel has a laminated structure and has high rigidity, the function of maintaining the shape of the interior panel itself due to its rigidity is enhanced. Therefore,
It is not necessary to firmly attach the interior panel to the receiving bone member (vehicle structure), and the number of mounting screws can be reduced. In particular, since the interior panel constitutes a small ceiling part that the occupant does not touch much, there is no significant effect even if the number of mounting screws is reduced.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

1 (a), 1 (b) and 1 (c) show a passenger compartment interior panel according to the present invention, and FIG. 1 (a) is a plan view showing a receiving bone member and a structure to which the passenger compartment interior panel is attached by a chain line.
(B) and (c) are a sectional view taken along the line AA and a sectional view taken along the line II of FIG. 2A and 2B show a leaf spring according to the present invention, wherein FIG. 2A is a front view, FIG. 2B is a plan view, and FIG. 2C is a side view.

As shown in FIGS. 1 (a) to 1 (c), a receiving bone member 3 is fixed to a vehicle body 2 by welding. The cabin interior panel 1 of the vehicle is
Is mounted using the mounting screw 4 and the leaf spring 5 (metal spring). The cabin interior panel 1 forms a small ceiling section between the cabin side section and the ceiling section, and has a laminated structure (thickness of 6) in which a decorative panel, a core material, and a back panel are sequentially laminated from the front side. .9 mm).

The receiving bone member 3 has a plate-shaped base 3a, which is fixed to the vehicle body 2 by welding. One end of a vertical wall 3b extending in a direction orthogonal to the base 3a is connected to one end of the base 3a.
At the other end of the vertical wall portion 3b, a plate-like mounting portion 3c is continuously provided so as to extend in a direction opposite to and parallel to the base portion 3a. The room interior panel 1 is attached to the mounting portion 3c.
From the front side, it is attached using the attachment small screw 4 and the leaf spring 5.

The leaf spring 5 is fixed to the back surface of the passenger compartment interior panel 1 by using a fixing means such as a double-sided adhesive tape or an adhesive having an excellent adhesive strength before attaching the passenger compartment interior panel 1 to the receiving member 3. Is done. The mounting position is a part to which the small screw 4 is attached using the small screw 4.
The through hole 5d through which the through hole 5d is inserted substantially coincides with the through hole of the passenger compartment interior panel 1 into which the mounting screw 4 is inserted. In the attached state, the leaf spring 5 is located between the mounting portion 3c of the receiving bone member 3 and the passenger compartment interior panel 1, and constantly urges the passenger compartment interior panel 1 in a direction away from the receiving bone member 3. ing.

When the cabin interior panel 1 is attached to the bone member 3, the leaf spring 5 bends according to the screwing amount of the mounting small screw 4, and the plate spring 5 is bent relative to the cabin interior panel 1 according to the amount of the bend. The spring 5 exerts an appropriate reaction force.

FIGS. 2A to 2C show the leaf spring 5 so that an adjustment range (stroke) necessary for level adjustment can be secured and an appropriate reaction force can be exerted.
The shape is as shown in FIG. That is, the leaf spring 5 has a symmetrical shape, and includes a plate-shaped horizontal base 5a which is fixed to the rear surface of the passenger compartment interior panel 1 in a tightly contacted state at the center. The horizontal base portion 5a has a through hole 5d through which the mounting screw 4 is inserted. On both sides of the horizontal base 5a, base ends of the inclined portions 5b are continuously provided. Inclined part 5
b extends obliquely so as to form an obtuse angle with the horizontal base 5a. A distal end portion 5c extending outward substantially in parallel with the horizontal base portion 5a is continuously provided at the distal end portion of the inclined portion 5b. The tip 5 c elastically contacts the receiving bone member 3.

As shown in FIG. 2A, the leaf spring 5 has a height Ho in a free state where no load is applied. When the cabin interior panel 1 is attached to the receiving bone member 3, the space between the cabin interior panel 1 and the mounting portion 3 c of the receiving bone member 3 is narrowed by fastening with the mounting small screws 4. That is, the leaf spring 5 is attached in a state where the height is H (<Ho) and the plate spring 5 is bent by the amount of deflection δ. Therefore, in this state, the cabin interior panel 1
An appropriate spring reaction force is always applied by the leaf spring 5.

The leaf spring 5 has a deflection amount of δ mm, for example.
Is set as Pkgf. If the mounting load is insufficient, a plurality of leaf springs 5 can be used. The design values of the deflection amount δ and the mounting load P are arbitrarily designed by changing the spring constant of the leaf spring 5.

If the leaf spring 5 having such a shape is used, even if the entire shape is bent to a substantially flat shape,
Demonstrate appropriate reaction force. That is, the amount of deflection of the leaf spring 5 ranges from the normal state (see the solid line in FIG. 2A) to the state in which the leaf spring 5 is bent substantially in a flat shape (see the chain line in FIG. 2A). Greatly changes, and the level of the cabin interior panel 1 can be adjusted over a wide range.

Further, although not specifically shown, the mounting screw 4 is coated with a resin for adhering an anti-loosening agent to a thread portion thereof, and is subjected to anti-loosening processing. By the loosening prevention processing, a necessary friction holding force is secured between the mounting portion 3c of the receiving bone member 3 and the screw portion of the mounting small screw 4. Here, as the anti-loosening agent, for example, a special nylon is used, and the thread portion of the mounting small screw 4 is coated by fusion.

After completion of such preparatory work, the passenger compartment interior panel 1 is fastened and fixed to the mounting portion 3c of the receiving bone member 3 by using the leaf spring 5 and the mounting screw 4 in combination. At this time, the position of the passenger compartment interior panel 1 with respect to the mounting portion 3c of the receiving bone member 3 is maintained by the spring reaction force of the leaf spring 5. The amount of deflection of the leaf spring 5 changes in accordance with the amount of tightening by the mounting small screw 4, and applies an appropriate reaction force to the passenger compartment interior panel 1. Therefore, the level adjustment of the cabin interior panel 1 is easily and easily performed by changing the screwing amount of the mounting small screw 4.

When the level adjustment is completed, the levels of the adjacent guest room interior panels match, and the panels are connected by a panel connector (not shown). Therefore, it is not necessary to perform the level adjustment work of the passenger compartment interior panel 1 using the conventional adjustment liner, and the passenger compartment interior panel 1 can be immediately attached to the receiving bone member 3.

In addition, since the screw portion of the mounting small screw 4 is coated with a loosening preventing agent, a friction holding force is generated between the screw portion and the female screw portion of the mounting portion 3c of the receiving bone member 3, and The machine screw 4 is not accidentally loosened.
Further, even if the mounting screw 4 is further screwed in or loosened, the friction holding force is not impaired, and the level of the interior panel of the cabin is adjusted by adjusting the screwing amount of the mounting screw 1. Can be performed reliably.

When the interior panel 1 is mounted using the leaf springs 5 and the mounting screws 4 in this manner, the level of the interior panel 1 is reduced as compared with the case where a conventional adjustment liner is used. It can be more easily adjusted to the proper position.

In order to mount the passenger compartment interior panel 1 in the above-described structure, first, the upper and lower edges of each passenger compartment interior panel 1 are temporarily attached to the attachment portion 3c of the receiving bone member 3 using the attachment small screws 4. To conclude.

Then, the left and right side edges of the adjacent passenger compartment interior panel 1 are engaged with engaging recesses of panel connecting tools (not shown) fixed at predetermined positions, respectively. That is, the level of the cabin interior panel 1 is adjusted by adjusting the screw-in amount of the mounting small screw 4, the smoothness with the adjacent cabin interior panel 1 is ensured, and the side edge portion is engaged with the panel connector. Engage with the recess. Thereby, installation of the cabin interior panel 1 is easily performed.

In this case, as described above, the passenger compartment interior panel 1 has a laminated structure, and is thick and rigid.
The guest room interior panel 1 is formed as a surface only by attaching the rectangular guest room interior panel with, for example, four mounting screws 4 at the four corners, and the shape does not collapse. Therefore, in the case of mounting the interior panel 1 having such a high rigidity, the required number of mounting screws 4 can be reduced, and the interior panel 1 is mounted with the mounting screws 4 accordingly. The number of receiving bone members 3 can be reduced. In particular, since the passenger compartment interior panel 1 constitutes a small ceiling portion that is hardly touched by a person, there is no significant effect even if the number of mounting small screws 4 is reduced.

Note that the passenger compartment interior panel 1 is fastened to the vehicle body 2 using the leaf spring 5 and the mounting small screw 4 (locking screw), and the JIS E4031 is used to confirm the locking effect against vibration. When a resonance test and a vibration endurance test were performed based on the above, it was confirmed that the loosening of the leaf spring had almost no effect on the fastening force.

In the above-described embodiment, the leaf spring 5 having the shape shown in FIG. 2 is used as the metal spring. However, the shape of the metal spring is not limited to this, and is suitable for fastening with a mounting screw. A metal spring having a U-shaped cross section as shown in FIGS. That is, the engagement recessed portion 11 with which the side edge portion of the passenger compartment interior panel 1 is detachably engaged.
A mounting portion 11c for mounting with a mounting screw 12 is formed on the back side of the panel connecting tool 11 having a and 11b, and one end is fixed to the mounting portion 11c, while the other end is a receiving bone member 13 The metal spring 14 </ b> A is disposed so as to be on the side (see FIG. 3A), or the metal spring 14 </ b> A is mounted so that the metal spring 14 is located between the mounting portion 11 c and the receiving bone member 13. (See FIG. 3B).

In the above-described embodiment, the mounting of the passenger compartment interior panel 1 having a laminated structure constituting the small ceiling portion between the passenger compartment side portion and the ceiling portion has been described, but the present invention is not limited thereto. The present invention is not limited to this, and can be applied to the attachment of interior panels constituting other parts, and it is needless to say that the invention can be applied to the interior panel of a guest room including only decorative panels.

[0041]

The present invention is embodied in the form described above, and has the following effects.

According to the first aspect of the present invention, since the metal spring having an appropriate reaction force is provided between the receiving bone member and the interior panel at a position where the metal spring is mounted using the mounting screw,
The level of the interior panel can be adjusted over a wide range only by changing the screwing amount of the mounting screw, and the level of the interior panel can be easily adjusted. Therefore, it is possible to mount the interior panel at an appropriate position without performing a level adjustment operation by providing a level adjustment liner between the mounting surface of the receiving bone member and the mounting surface of the interior panel as in the related art. Becomes possible. In particular, gold
A genus spring is provided with an inclined part and a tip part sequentially connected to the horizontal base.
It is a leaf spring having a symmetrical shape
This ensures a large change in the amount of deflection of the metal spring,
The adjustment range of the panel level can be widened.

According to the second aspect of the present invention, since the metal spring is previously attached to the portion of the interior panel to which the attachment screw is attached using the attachment screw, the metal spring is sensitive to the screwing amount of the attachment screw. It reacts and deflects according to the amount of screwing in, so that an appropriate reaction force can be quickly applied to the interior panel.

According to the third aspect of the present invention, since the thread portion of the mounting screw is coated with the anti-loosening agent, the friction holding force required between the thread portion of the mounting screw and the female thread of the receiving bone member is reduced. This does not cause the mounting screws to be loosened even if the screwing amount of the mounting screws is increased or decreased.

[0045]

According to the fourth aspect of the present invention, since the interior panel is made of a laminated structure having high rigidity, the interior panel is mounted while maintaining its shape even if the number of mounting screws is reduced. be able to. Therefore, it is possible to reduce the number of mounting screws as compared with the conventional case of mounting an interior panel having low rigidity.

[Brief description of the drawings]

1A and 1B show a guest room interior panel according to the present invention, wherein FIG. 1A is a plan view showing a receiving bone member and a structure to which the guest room interior panel is attached by a dashed line, and FIGS.
It is the sectional view on the Aa line of FIG.

2A is a front view of a leaf spring according to the present invention, and FIG.
Is a plan view of the same, and (c) is a side view of the same.

FIGS. 3A and 3B are diagrams each showing a modified example.

4A and 4B show a conventional cabin interior panel, wherein FIG. 4A is a plan view showing a receiving bone member and a structure to which the cabin interior panel is attached by a dashed line, and FIGS. FIG. 3 is a cross-sectional view taken along a line A and a line BB.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Interior panel of passenger room 2 Structure of vehicle 3 Receiving bone member 4 Small screw for mounting 5 Leaf spring 11 Panel connector 12 Screw 13 Receiving bone member 14 Metal spring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B61D 17/18 F16B 39/22

Claims (4)

(57) [Claims] 1. A mounting structure for an interior panel of a vehicle, wherein a receiving bone member is fixed to a structure of the vehicle by welding, and the interior panel is attached to the receiving bone member from the front side using mounting screws. A part to which the interior panel is attached using the attachment screw and between the receiving bone member and the interior panel,
A metal spring biasing in a direction away from the receiving bone member is attached. The metal spring is a leaf spring having a symmetrical shape,
Plate-shaped fixed to the back of the interior panel
The horizontal base and one end are continuously provided on both sides of the horizontal base.
Extend obliquely at an obtuse angle to the horizontal base
An inclined portion, and the horizontal base portion connected to the other end portion of the inclined portion;
A mounting structure for an interior panel of a vehicle, comprising: a tip portion extending substantially in parallel . 2. The mounting structure for an interior panel of a vehicle according to claim 1, wherein the metal spring is fixed in advance to a back surface of a portion of the interior panel to which the mounting screw is attached using the mounting screw. 3. The mounting structure for an interior panel of a vehicle according to claim 1, wherein said mounting screw has a thread portion coated with a loosening preventing agent. 4. The interior panel includes a cabin side and a ceiling.
It constitutes a small ceiling between, decorative veneer from the surface side,
The mounting structure of a vehicle interior panel according to any one of claims 1 to 3, which has a laminated structure in which a core material and a back plate are sequentially laminated .