JPH09315237A - Interior ceiling structure of vehicle, and method for assembling interior ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure, which can be assembled without using the adhesive agent, by fitting a base part of a reinforcement for covering an abutment end, on which a peripheral edge of each head lining abuts or comes close, in a fitting recessed part, and pushing the abutment end to a roof panel with the reinforcement. SOLUTION: A rear edge of each head lining 6, 7, of which front edge is fitted in a clearance, is lifted and made to tightly contact with a roof panel 5, and the rear edge is made to come close to a rear clearance. When the head linings 6, 7 are moved backward in the condition that they are made to tightly contact with the roof panel 5, the rear edge can be easily fitted in the clearance. After concluding the arrangement of the head linings 6, 7, a reinforcement 1 is fitted, At the time of fitting this reinforcement 1, a front base 16 is inserted into a front fitting recessed part 13, and inserted deep into the clearance, and continuously, it is moved backward so as to fit a rear base in a fitting recessed part 15, and the fitting is thereby concluded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to vehicles, that is, passenger vehicles, trucks, and other industrial vehicles having a cabin.
The present invention relates to an indoor ceiling structure (hereinafter represented by "vehicle") and a method for easily and inexpensively assembling the indoor ceiling structure.

[0002]

2. Description of the Related Art Among conventional vehicle interior ceiling structures, for relatively inexpensive vehicles, a hard head lining is fixed to a metal roof panel with screws or a soft head lining is attached. Things were common. An indoor ceiling structure with a hard head lining fixed, for example, a skin impregnated with polyvinyl chloride (PVC) or the like is adhered to a base material that is formed by thermoforming a felt impregnated with a phenolic resin according to the shape of the roof panel and then curing it. The peripheral edge of the headlining has been screwed at a blind spot, for example, in the convex portion for mounting the room lamp, or has a shape that does not give a sense of discomfort, for example, it has been fixed to the roof panel by mounting a rearview mirror or a sun visor. In either case, the end surface of the headlining was hidden in the roof rail or the weather strip was covered to adjust the appearance.

The indoor ceiling structure to which the soft head lining is attached corresponds to the periphery of the head lining in which the polyvinyl chloride (PVC) skin is attached to the soft urethane base material cut into a shape similar to the roof panel. To the roof rail,
It is a structure that is forcedly pushed in using a spatula or the like. In this indoor ceiling structure, the head lining may be loosened just by pushing it into the roof rail. Therefore, the base material and the roof panel are adhered to each other with an adhesive.

[0004]

In any of the above-described work for assembling an indoor ceiling structure using a hard head lining or a soft head lining, a head lining having substantially the same size as the roof panel is used for the roof panel. It was very laborious to install it on. Then, the mounting work compels the operator to take an unreasonable posture and requires an excessive amount of labor, and particularly in the bonding work between the soft head lining and the roof panel, insufficient pressure is likely to occur, resulting in a bonding failure. , There was a problem of peeling the headlining. In addition, even if perfect adhesion is achieved, the headlining may peel off due to deterioration of the adhesive over time.

In addition to the above problems, the bonding work brings about a problem that the cost is greatly affected in the form of storage and service equipment for the adhesive. That is, the conventional indoor ceiling structure has been a factor for increasing the cost of the single item. Since the interior ceiling structure shown here is used for relatively inexpensive vehicles, it is clear that such cost impact is not suitable for the current trend of cost saving.

Therefore, in order to reduce the cost of a relatively inexpensive and simple indoor ceiling structure used for light automobiles, trucks and other industrial vehicles, pay particular attention to the method of assembling the indoor ceiling structure without using an adhesive. It was decided to study in order to develop an indoor ceiling structure that is almost the same as the conventional one in terms of the structure that can be assembled into.

[0007]

What has been developed as a result of the study is an interior ceiling structure in which a plurality of headlinings are mounted on the inner surface of the roof panel of a vehicle. A gap portion and a fitting concave portion are formed on the inner surface of the roof panel by fitting a peripheral edge of each head lining into the clearance portion, and the peripheral edge of each head lining abuts or approaches. The vehicle interior ceiling structure in which the base of the reinforcement for covering the abutting end is fitted into the fitting recess and the abutting end is pressed against the roof panel by the reinforcement. The base of the reinforcement refers to a portion of a fixed length from both ends that are usually fitted into the fitting recess, and in order to fix the position of the reinforcement, the base is hooked to a contact with the roof panel or roof rail or It is preferable to provide a hook portion for sandwiching the contact.

In the interior ceiling of the present invention, the head lining is fitted in the clearance formed between the roof panel and the roof rail at the periphery of the head lining, and is also fitted in the fitting recess formed between the roof panel and the roof rail. By fixing and fixing the head lining by means of the reinforcement, adhesive work is eliminated, the labor burden on the operator is reduced, and the interior ceiling of the vehicle can be easily assembled, resulting in cost reduction. To be realized. The head lining fits into the gap along the entire periphery except that it is pressed against the roof panel by reinforcement, so it has excellent mounting stability, and the tangent line between the roof rail and head lining is linear. It is possible to have a good indoor ceiling structure.

The reinforcement is to press the peripheral edges of the head linings, which are not fitted into the gaps, toward the roof panel while hiding the abutting ends of the head linings, and to fix the head linings so as not to be displaced. It also has a function to do. For fixing the head lining, the conventional fixing method, that is, a position that becomes a blind spot (for example, in a gap) and a means for screwing with a comfortable appearance can be used together, and it is possible to completely prevent the trouble such as peeling of the head lining. Like In addition, the reinforcement improves the structural strength of the roof panel and also functions as a route for electrical wiring.

The headlining is arranged by fitting at least a part of the peripheral edge into a gap formed between the roof panel and the roof rail, and the roof panel is concealed by the reinforcement while hiding the abutting end of each headlining. No adhesive is required because it is pressed against and is firmly attached to the roof panel. It is recommended that the headlining be divided into two pieces by dividing the roof panel at the center line in the front-rear direction of the vehicle in the case of a vehicle with a narrow ceiling such as a light vehicle. In a wide range of vehicles, the headlining is divided into three parts, front and rear,
Further, it is preferable to divide the front, rear, left and right into four or six. The butt end of the head lining that is divided into the front and rear is
The roof bow (right and left direction of the vehicle) installed on the opposite left and right roof rails is used instead of the reinforcement.

In the above-mentioned interior ceiling, first, the peripheral edges of the headlinings are sequentially fitted into the gaps formed between the roof panel of the vehicle and the roof rails so that the entire headlinings are arranged on the inner surface of the roof panel, and then the headlinings of the respective headlinings are arranged. The base portion of the reinforcement for pressing the abutting end with which the peripheral edge abuts or approaches toward the roof panel is fitted into a fitting recess formed between the roof panel and the roof rail, and each head is formed by the reinforcement. Assemble so that the butt ends of the lining are covered.

If the head lining is divided by the center line in the front-rear direction of the vehicle with respect to the roof panel and is composed of two pieces arranged side by side, for example, first the left head lining is fitted into the corresponding gap portion and then the right head lining. The head lining can be assembled by a procedure of fitting it in the corresponding gap portion, and as is clear from the above procedure, the assembling work does not take time and is very simple. Further, since the reinforcement can be provided as one body along the abutting ends of the two headlinings, that is, along the longitudinal center line of the vehicle, the number of parts can be reduced.

In order to make more effective use of the assembling advantages of the present invention, the head lining should have two opposing sides with a size that does not hang on the other if it is deeply fitted into one of the opposing gaps. While one of the two sides is fitted into the corresponding gap portion more than the predetermined depth, the other of the two sides is brought close to the corresponding gap portion, and one side fitted more than the predetermined depth is pulled back. It is preferable to assemble so that the other side fits into the corresponding gap. Similarly, the reinforcement should have a base portion facing the other one with a length that does not cover the other if it is deeply inserted into one of the facing fitting recesses, and one of the base portions has a predetermined depth in the corresponding fitting recess. The other side of the base portion in a state of being inserted larger than the above, close to the corresponding fitting recessed portion, while pulling back the one base portion inserted larger than the predetermined depth,
It is preferable to assemble the other base so as to be fitted into the corresponding fitting recess.

For example, let us consider a case where a substantially rectangular head lining which is divided into two parts on the left and right at the center line in the front-rear direction of the vehicle is fitted (whether left or right). If this headlining has front and rear edges that face each other with a size that does not hang on the other if it is deeply fitted into one of the facing gaps, one of the side edges (the other becomes the butt end and reinforcement (Pressed toward the roof panel) is inserted into the corresponding gap, and the front edge is first deeply inserted into the front gap, and the rear edge is brought close to the rear gap. By shifting the head lining backward in the posture, the rear edge can be easily fitted into the rear clearance. In this way, the relationship between the front and rear edges is naturally fitted into the corresponding gaps if the headlining can be arranged at the regular position, and the size that the other does not overlap the corresponding gaps only when one is deeply fitted. Having it simplifies the assembly work. Since the same applies to reinforcement, the description is omitted.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The interior ceiling of a vehicle to which the present invention is applied will be described below with reference to the drawings. FIG. 1 is an end view in which a ceiling in which the indoor ceiling structure of the present invention is applied to a truck is divided in a left-right direction, and a state in which a reinforcement 1 hooks a hook 4 in a fitting recess 3 of a front roof rail 2. 2 is an end view in which the ceiling is divided in the front-rear direction, and FIG. 3 is a perspective view of the ceiling seen from diagonally above the roof panel 5. This example consists of two head linings 6 and 7 equally divided to the left and right, and the abutting ends of both are
The interior ceiling that is blindfolded by the reinforcement 1 of the book is constructed.

Each of the headlinings 6 and 7 is shown in FIGS.
Alternatively, as shown in FIG. 3, a polyvinyl chloride sheet, a non-woven fabric, or TPO (thermoplastic olefin) is formed on a base material such as a plastic corrugated cardboard, a paper corrugated cardboard, or a resin board integrally molded in a shape similar to the roof panel 5.
It has a certain elasticity because it is made by laminating the skins made of the same material. Although the conventional head lining is composed of one sheet for the entire surface of the roof panel, in the indoor ceiling structure of the present invention, a plurality of head linings, two equally divided head linings 6, 7 in this embodiment, are used for the roof panel 5. Arrange for.

The left and right headlinings 6, 7 do not use an adhesive, and the front and rear edges and the left or right edge are covered by the roof panel 5.
1 formed between the roof rail and the roof rails 2, 8, 9 and 10
Fit into 1,12,13,14, left and right headlining 6,7
The abutting end of is pressed against the roof panel 5 by one metal reinforcement 1 to be in close contact with the roof panel 5. The roof rails 2,8,9,10 have their edges folded back so that when the peripheral edges of the headlining 6,7 are fitted into the gaps 11,12,13,14, the peripheral edges are not scratched. Headlining 6,7 and roof rails 2,8,9,10
The tangent line to and looks good. Reinforcement 1
Is supported by inserting the front and rear base portions 16 and 17 into fitting recesses 3 and 15 formed by notching a part of the roof rails 2 and 10 continuously to the gap portions 11 and 14, respectively. As shown in FIG. 2 (enlarged partially broken perspective view of portion A), the locking portion 4 provided on the front base portion 16 is engaged with the corresponding fitting recessed portion 3 to regulate the position in the front-back direction of the reinforcement 1. To do. Fitting recess 3,1
The 5 itself controls the position of the reinforcement 1 in the left-right direction, and also functions as a guide when assembling the bases 16 and 17 of the reinforcement 1. The reinforcement 1 serves as a structural reinforcing material for the indoor ceiling and also serves as an electric wiring path.

5 to 7 show the steps 1 to 3 for assembling the above-mentioned truck ceiling by using an end view (corresponding to FIG. 2) divided in the front-rear direction. FIG. 5 shows the headlining 6 (7). The front edge of is deeply inserted into the front gap (left side in FIG. 5) 11 (procedure 1), and FIG. 6 shows the state of FIG.
Back to the rear (right side in Fig. 5) and pull the trailing edge back
FIG. 7 shows a state in which the front base 16 of the reinforcement 1 is deeply inserted into the front recessed portion 3 (procedure 3).

First, as shown in FIG. 5, the front edge of the headlining 6 (7) is deeply inserted into the gap 11 which normally has a sufficient volume. Since the headlining 6 (7) is made of a material that is elastic and can be bent and bent as described above, even if the depth in the front gap portion 11 is not so long, it is sufficient. The front edge of the headlining 6 (7) can be pushed in if it has a sufficient volume. In this way, the headlining 6 (7) having the front edge fitted in the gap 11 is lifted up at the rear edge to be brought into close contact with the roof panel 5 (see a chain double-dashed line in FIG. 5), and the rear gap 14 is provided with the rear edge. The edges can be in close proximity.

In the state shown in FIG. 5, the head lining 6 (7) is in a position which is largely displaced forward, so that even if the head lining 6 (7) is brought into close contact with the roof panel 5, the rear edge is close to the rear gap portion 14. It does not take just to do. However, as shown in FIG. 6, when the head lining 6 (7) is retracted while being in close contact with the roof panel 5, the rear edge is easily separated from the gap.
Can be fitted in 14. The gap between the front and rear edges
The work of fitting into 14 can be carried out with the side edge of the headlining 6 (7) always fitted into the gap 12 (13) on the side (see FIG. 1). By thus dividing the headlinings 6 and 7, the arrangement with respect to the roof panel 5 is facilitated.

When the arrangement of the headlinings 6 and 7 is completed, as shown in FIG. 7, the attachment of the reinforcement 1 is started. The mounting work of the reinforcement 1 is almost the same as the fitting work of the headlinings 6 and 7,
First, the front base portion 16 is passed through the fitting recess portion 3 and deeply fitted and inserted into the clearance portion 11 (in this example, since the clearance portion 11 and the fitting recess portion 3 are continuous, the base portion 16 is eventually passed through the fitting recess portion 3). Although the fitting recess 3 and the clearance 11 may be formed separately, the fitting recess 3 and the clearance 11 may be formed separately. The same applies to the rear fitting recess 15 and the clearance 14.) Then, the rear base 17 is fitted into the fitting recess 15 to complete the attachment. The hook 4 provided on the reinforcement 1 has a very small step, and the base 16 can be inserted deeply by easily overcoming the fitting recess 3 at the time of mounting work, so that the mounting work is particularly hindered. There is no. In addition,
If the reinforcement 1 is shorter than the headlining 6 and 7, the base part will be used when moving it back and forth during mounting work.
16,17 edges do not damage the roof panel 5. FIG. 1 shows a state in which the interior ceiling has been assembled in this manner.

As shown in FIG. 4, the fitting recessed portions 3 and 15 are provided with a hooking portion 4 provided on a base 16 in front of the reinforcement 1 so that the front and rear of the reinforcement 1 after attachment can be In addition to preventing lateral displacement, it also functions as a guide that indicates the mounting position of the reinforcement 1 when mounting. Therefore, the shape of the fitting recess 3 is preferably an inverted trapezoidal shape that connects the corners in the cross section of the reinforcement 1.
In addition to the above shape, a shape that abuts on the outer surface of the reinforcement 1, for example, a shape having corners similar to the cross-sectional shape of the reinforcement 1 is also conceivable, but as shown in FIG. Even with a simple trapezoidal cutout, it can perform the functions of fixing the position of the reinforcement 1 and guiding it during the mounting work, and the inverted trapezoidal fitting recess 3 makes it easier to apply the reinforcement 1 for mounting work. Is also easy. Further, the hooking portion 4 preferably has a cross-section holding claw shape that holds the edge of the roof rail 2 in the fitting recessed portion 3, and more specifically, as shown in FIG.
It is preferable that a pair of relatively low steps that are symmetrical to the front and rear with respect to the edge portion of the roof rail 2 to be sandwiched constitutes a pair of holding claws, and the inside of each step is abruptly completed and the outside is gently formed.

The interior ceiling structure of the present invention can also be applied to interior ceilings of various vehicles. FIG. 8 is an end view in which the ceiling of a high roof van to which the indoor ceiling structure of the present invention is applied is divided in the left-right direction by using three divided headlinings 18, 19, 20, and FIG. 9 is divided in the front-rear direction. In end view,
FIG. 10 is a perspective view of this ceiling. The characteristic of this example is that the headlinings 18, 19, 20 are divided into three parts in the front and rear. Therefore, the abutting ends of the headlinings 18, 19 (19, 20) are hidden by the roof bows 21, 22 installed on the left and right roof rails 8, 9 instead of the reinforcement, and the reinforcement 1 is covered by the roof bows 21, It is only responsible for fixing each headlining 18, 19, 20 perpendicular to 22. That is,
The roof bows 21 and 22 also function as reinforcements.

The material composition of the head linings 18, 19, 20 is the same as the example of the indoor ceiling structure of the truck, but the head lining 18 is in the front gap portion 11 and the front roof bow 21, and the head lining 19 is in the front and rear. The head lining 20 is different from the roof bows 21 and 22 in that the head lining 20 is fitted into the rear roof bow 22 and the rear clearance portion 14. The roof bows 21 and 22 not only hide the abutting ends of the headlinings 18 and 19 (19, 20) but also have a function similar to the reinforcement that fixes the headlinings 18, 19 and 20. Reinforcement 1
Inserts the base portion 16 (17) into the fitting recessed portion 3 (15) formed continuously with the gap portion 11 (14) in the roof rail 2 (10), and attaches the front and rear hooking portions 4, 23 to the roof rail 2, Hang it on the edge of 10 and fix the position in front and back and left and right.

When the roof bows 21 and 22 are previously installed on the roof rails 8 and 9 by welding or the like in the interior ceiling structure of the high roof van, each headlining 1
It is sufficient to divide 8,19,20 in the left and right directions. FIG. 11 shows that the head linings 24, 25, 26, 27, 28 and 29 divided into 6 are used.
FIG. 12 is an end view in which the ceiling of a high roof van to which the interior ceiling structure of the present invention is applied is divided in the left-right direction, FIG. 12 is an end view in which the ceiling is divided in the front-rear direction, and FIG. 13 is a perspective view of this ceiling.
In this example, the head linings 24, 25, 26, 27, 28, 29 are divided into six parts in the front, rear, left and right, and each head lining 24, 25, 26, 2
The peripheral edges of 7,28,29 are fitted into the corresponding gaps 11,12,13,14, respectively, and the roof bows 21,22 and the front and rear roof rails 2,22 which have been welded to the left and right roof rails 8,9 in advance. By reinforcement 1 which is inserted in 10,
Hide each butt end and fix them together.

The headlinings 24, 25, 26, 27, 28, 29 are
Fit into each section divided by roof bows 21 and 22 individually. At this time, the head linings 24 and 25 and the head linings 26 and 27 (head lining 2
The butt ends of 6,27 and headlining 28,29) are hidden by the roof bow 21 (22). Then, the reinforcement 1 having the roof bows 21 and 22 penetratingly fitted into the front and rear gaps 11 and 14 has the left and right headlinings 24, 25 (26, 27).
Or 28, 29) is hidden, and at the same time, all headlinings 24, 25, 26, 27, 28, 29 are fixed together. Since the roof bows 21 and 22 are originally structural members for the roof panel 5, it is common to weld them to the roof rails 8 and 9 in advance, and the head linings 24, 25, 26, 27, 2
It is normal to fit 8 and 29 into 6 parts like this example.

The interior ceiling structure of the present invention is suitable for assembling the interior ceiling of a relatively inexpensive vehicle, that is, a vehicle such as a light vehicle, a van, a truck or an industrial vehicle in which the presence of reinforcements and roof bows is acceptable. . In such a vehicle, cheaper and simpler assembly is preferable because it leads to cost reduction. Further, in the indoor ceiling structure of the present invention, the reinforcement also serves to reinforce the structural strength, can be used as a path for electric wiring such as a room light, and a very practical structure can be constructed. In addition,
The head lining of this example is thermoformed in advance according to the shape of the roof panel before it is mounted on the roof panel. However, the head lining is strongly pressed against the roof panel by the lean reinforcement, so it is not thermoformed. Even if the flat head lining is attached to the roof panel, it can be sufficiently aligned with the roof panel. In this case, since the thermoforming step is omitted, the cost can be further reduced.

[0028]

According to the interior ceiling structure and the assembling method of the present invention, the labor required for assembling the interior ceiling of the vehicle can be suppressed, and the inexpensive and simple assembling work can be realized, which leads to the reduction of the vehicle cost. Can be achieved. Especially,
The greatest advantage is that assembly work can be greatly improved by eliminating the need for adhesives.

The division of the headlining may be arbitrary, and the assembly method can be changed depending on the division method, and the appearance can be changed by changing the layout of the reinforcement and the roof bow. Therefore, the present invention is applied to the interior ceilings of various vehicles. It can be said that it is extremely versatile. Moreover, since reinforcement has the advantage that it can reinforce the structural strength of the indoor ceiling and also secure the route of the electric wiring, it is superior to the conventional one in that it is not necessary to rework the route of the electric wiring. It can be said that

[Brief description of drawings]

FIG. 1 is an end view in which a ceiling of a truck to which the present invention is applied is divided into left and right directions.

FIG. 2 is an end view in which the ceiling is divided in the front-rear direction.

FIG. 3 is a perspective view of the ceiling.

FIG. 4 is an enlarged partially cutaway perspective view of an A portion in FIG. 1 or 2.

FIG. 5 is an end view showing a procedure 1 for assembling the ceiling, which is divided in the front-rear direction.

FIG. 6 is an end view showing a procedure 2 for assembling the ceiling, which is divided in the front-rear direction.

FIG. 7 is an end view showing a procedure 3 for assembling the ceiling, which is divided in the front-rear direction.

FIG. 8 is an end view in which the interior ceiling of a high roof van having three divided headlinings is divided in the left-right direction.

FIG. 9 is an end view in which the ceiling is divided in the front-rear direction.

FIG. 10 is a perspective view of the ceiling.

FIG. 11 is an end view in which the ceiling of a high roof van having a head lining divided into six parts is divided in the left-right direction.

FIG. 12 is an end view in which the ceiling is divided in the front-rear direction.

FIG. 13 is a perspective view of the ceiling.

[Explanation of symbols]

 1 Reinforcement 2 Front roof rail 3 Front fitting recess 4 Front hook 5 Roof panel 6 Left headlining 7 Right headlining 8 Left roof rail 9 Right roof rail 10 Rear roof rail 11 Front clearance 12 Left clearance 13 Right clearance 14 Rear clearance 15 Rear fitting recess 16 Front base 17 Rear base

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tsuneo Matsunaga 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Inventor Tadahiko Kodama 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Automotive Industry Co., Ltd.

Claims (4)

[Claims] 1. An indoor ceiling structure configured by mounting a plurality of headlinings on an inner surface of a roof panel of a vehicle,
A gap portion and a fitting recess are formed between the roof panel and the roof rail of the vehicle, and the peripheral edge of each head lining is fitted into the gap portion to arrange all the head linings on the inner surface of the roof panel. The interior ceiling of a vehicle in which the base of a reinforcement that covers the abutting ends with which the peripheral edges of the headlinings abut or adjoins is inserted into the fitting recess and the abutting ends are pressed against the roof panel by the reinforcement. Construction. 2. An indoor ceiling structure configured by mounting a plurality of headlinings on an inner surface of a roof panel of a vehicle,
First, the peripheral edges of the respective headlinings are sequentially fitted into the gaps formed between the roof panel and the roof rail of the vehicle so that the entire headlinings are arranged on the inner surface of the roof panel, and then the peripheral edges of the respective headlinings come into contact with or come close to each other. The base portion of the reinforcement for pressing the butted end toward the roof panel is fitted into the fitting recess formed between the roof panel and the roof rail, and the butted end of each headlining is covered with the reinforcement. A method of assembling a vehicle interior ceiling so that it is hidden. 3. The head lining according to claim 2 has two opposite sides with a size that does not hang on the other of the opposite gaps when fitted deeply into one of the opposite gaps, and one of the two sides corresponds to the corresponding gap. While the other side of the two sides is brought closer to the corresponding gap in a state in which the side is fitted more than the predetermined depth, and the one side fitted more than the predetermined depth is pulled back,
A method for assembling a vehicle interior ceiling in which the other side is assembled so as to fit into the corresponding gap. 4. The reinforcement according to claim 2 has base portions facing each other with a length that does not hang on one of the fitting recesses that face each other when the reinforcement is deeply inserted, and one of the base portions corresponds to the other. The other one of the base portions is brought close to the corresponding fitting concave portion in a state where the fitting concave portion to be fitted is inserted more than a predetermined depth,
A method for assembling an interior ceiling of a vehicle, wherein one base part that has been inserted to a depth greater than the predetermined depth is pulled back while the other base part is inserted and inserted into a corresponding fitting recess.