JPH04334681A - Automobile body assembling method and body structure - Google Patents

Abstract

PURPOSE:To improve the connecting method and/or connecting structure of the lower unit body and upper unit body of a vehicle body so as to make assembling work easy and rapid. CONSTITUTION:A body 1 is divided at least into a lower unit body 2 provided with a floor member 21, and an upper unit body 4 provided with a roof member 41 and lateral body side panels 42. The lower unit body 2 is inserted into the upper unit body 4 from the front side, and the side part in the vehicle width direction of the floor member 21 of the lower unit body 2 is engaged with the engaging part at the lower edge of the body side panel 42 of the upper unit body 4. Either one of the side part and the engaging part is formed into a recessed part extended in the body longitudinal direction, and the other is formed into a protruding part fitted slidably into the recessed part. At the time of inserting the lower unit body 2 into the upper unit body 4, the insertion of the lower unit body 2 is guided by this fitting between the recessed part and the protruding part.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling an automobile body into a unit, and a vehicle body structure.

0002

2. Description of the Related Art In recent years, in the manufacture of automobiles, various attempts have been made to unitize the body or various parts of an automobile in order to facilitate assembly work on an assembly line and reduce the number of work stations. Among them, as disclosed in Japanese Patent Laid-Open No. 63-235174, for example, the vehicle body is divided into a front body having a dash panel and forming an engine compartment, and a lower unit having a floor member. It is known that the vehicle is divided into a body and an upper unit body having a roof member and left and right body side panels, and these three bodies are connected to each other. Also, Utsukai Showa 64-283
Publication No. 77 discloses that a vehicle body is divided into two parts, a lower unit body and an upper unit body, and the two bodies are connected to each other.

0003

[Problems to be Solved by the Invention] However, in the above-mentioned conventional device, when the upper unit body and the lower unit body are connected, the upper unit body is brought close to the lower unit body so as to cover it from above, and the Since the joints of both bodies are joined using bolts and adhesives, it is necessary to maintain both bodies in their respective positions at all times during the joining process, and it is also necessary to increase the number of joints. There is a problem in that the joining work is time-consuming.

[0004] The present invention has been made in view of the above points, and a particular object thereof is to improve the method and structure for connecting the upper unit body and lower unit body, thereby improving assembly work. It is an object of the present invention to provide a method of assembling a car body and a car body structure that can be simplified and speeded up.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the invention according to claim 1 provides a method for assembling a vehicle body, in which a vehicle body is assembled into at least a lower unit body having a floor member, a roof member, and left and right bodies. The lower unit body is inserted into the upper unit body from the front side relatively to the upper unit body, and the side portion of the floor member of the lower unit body in the vehicle width direction is inserted into the upper unit body. It is configured to be assembled by engaging with the engaging portion on the lower edge of the body side panel.

[0006] In the invention as set forth in claim 2, in order to easily and reliably insert the lower unit body and to further improve assembly workability, either the side portion or the engaging portion is pre-aligned in the longitudinal direction of the vehicle body. The other end is formed into a concave portion extending into the concave portion, and the other is formed into a convex portion which is slidably fitted into the concave portion. When the lower unit body is inserted into the upper unit body relatively, the insertion of the lower unit body is guided by the engagement between the recess and the protrusion.

[0007] Furthermore, when the upper unit body and the lower unit body are joined together using an adhesive, in order to improve workability, it is necessary to connect the upper unit body and the lower unit body before relatively inserting the lower unit body. It is desirable to use a method in which an adhesive is injected into the recess and the protrusion is fixed in the recess with the adhesive when the lower unit body is inserted. Further, in order to ensure adhesive bonding, as in the invention set forth in claim 4, an adhesive is injected into the recess after the lower unit body is inserted, and the protrusion is fixed in the recess with the adhesive. It is desirable to use a method that

The invention set forth in claim 5 relates to an automobile body structure that is substantially the same as the method for assembling an automobile body according to the invention set forth in claim 2, and has the following configuration.

That is, the vehicle body is divided into at least a lower unit body having a floor member, and an upper unit body having a roof member and left and right body side panels, and the lower unit body has a relative position relative to the upper unit body. It is inserted from the front side of the lower unit body and assembled by engaging the side portion of the floor member of the lower unit body in the vehicle width direction with the engaging portion of the lower edge of the body side panel of the upper unit body. Further, one of the side portion and the engaging portion is formed as a recess extending in the longitudinal direction of the vehicle body, and the other is formed as a convex portion that is slidably fitted into the recess, and the lower unit body is When the lower unit body is inserted into the unit body relatively, the insertion of the lower unit body is guided by the engagement between the recess and the protrusion.

[0010] Here, the invention as set forth in claim 6 provides that, in order to simplify the engagement structure between the side portion and the engagement portion, the engagement portion is provided on the interior side of the lower edge of the body side panel. composition. Further, the invention according to claim 7 provides an arrangement in which the engaging portion is provided on the outer side of the vehicle interior at the lower edge of the body side panel in order to accentuate the vicinity of the lower edge of the body side panel, and the engaging portion is engaged with the engaging portion. The side part of the floor member is configured to extend around the lower edge of the body side panel to the outside of the vehicle interior.

[0011]

[Operation] With the above configuration, in the invention according to claim 1,
When assembling the vehicle body, insert the lower unit body relatively into the upper unit body from the front side, and insert the side part of the floor member of the lower unit body in the vehicle width direction into the engaging part of the lower edge of the body side panel of the upper unit body. Both bodies are assembled by engaging with each other. In this case, since the relative insertion direction of the lower unit body (vehicle body longitudinal direction) and the support direction by engagement (vertical direction) are different, the insertion of the lower unit body and the assembly may be hindered by the engagement part. Not only is there no, but
This engagement structure allows the lower unit body to be supported at the insertion position. Therefore, there is no need to support the lower unit body until the joining work of the lower unit bodies is completed as in the past, and adhesive can be easily used as a method for joining both bodies.
The number of fastening locations using bolts or the like can be reduced as much as possible.

0012

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.

1 to 3 show a vehicle body structure of an automobile according to a first embodiment of the present invention. This vehicle body 1 includes a lower unit body 2 having a front floor member 21, and a roof member 4.
1. The upper unit body 4 is divided into left and right body side panels 42, 42 and a rear floor member 43, and the lower unit body 2 is inserted relatively into the upper unit body 4 from the front side, and the lower unit body 4 is divided into The left and right side parts of the front floor member 21 of the unit body 2 in the vehicle width direction are attached to the lower edges of the left and right body side panels 42, 42 of the upper unit body 4.
Both unit bodies 2 and 4 are assembled by engaging the rear edge of the rear floor member 1 with the front edge of the rear floor member 43 of the upper unit body 4, respectively. After this assembly, an assembly 9, which is a subassembly of a power unit 5 such as an engine, a suspension 6 for each wheel, an exhaust system 7, a fuel tank 8, etc., is assembled to the vehicle body 1.

The lower unit body 2 includes, in addition to the front floor member 21, a dash panel 22 that partitions the engine room and the passenger compartment, and hood ledge panels 23, 23 that constitute the side walls of the engine room. Become. The dash panel 22 is provided with a cowl box 24 extending in the vehicle width direction on its upper part, and an instrument panel unit 26 equipped with various instruments including a steering wheel 25, pedals and insulators (not shown), etc. The item is installed. Furthermore, a front side frame 27 extending in the longitudinal direction of the vehicle body is provided at the lower part of the hood ledge panel 23, and a rear end of the front side frame 27 is connected to the dash panel 22.

The front floor member 21 has a honeycomb structure made of aluminum or the like, as shown in FIG. 4, in order to be lightweight and have sufficient strength. , front seats (driver's seat and passenger seat)
28, 28 are installed.

[0016] Then, such a lower unit body 2
After the upper unit body 4 and assembly body 9 are assembled, a front fender panel 31 is attached to the outside of the hood ledge panel 23, and an engine hood 32 that covers the upper part of the engine compartment is attached.
And the front bumper unit 33 etc. are assembled.

On the other hand, each body side panel 42 of the upper unit body 4 has two door openings 44 at the front and rear.
, 45 are provided in the front door opening 44 after assembly with the lower unit body 2.
6, a rear door 47 is attached to the rear door opening 45 so as to be openable and closable. Above body side panel 4
2 includes a front pillar 48 constituting the front edge of the door opening 44, a rear edge of the door opening 44, and the door opening 45.
The center pillar 49 that constitutes the front edge of the door opening 4
5, and a side sill 51 that forms the lower edges of both door openings 44, 45.

As shown in detail in FIG. 4, the side sill 51 has a closed cross-sectional structure made of extruded aluminum, and on the side surface of the side sill 51 on the passenger side, there are a pair of upper and lower parts that protrude inward. Projecting pieces 52, 52 are integrally formed over the longitudinal direction of the side sill 51 (that is, the longitudinal direction of the vehicle body). Both of the protruding pieces 52, 52 have a recess 5 extending in the longitudinal direction of the vehicle body along with the side surface of the side sill 51 on the inside side of the vehicle.
3, and the edge 21a is provided in the recess 53 as a convex part of the side part of the front floor member 21 so as to be slidably fitted therein, and the lower unit body 2 is connected to the upper unit. When inserting into the body 4, the above recess 5
3 and the convex portion (side edge of the front floor member 21) 21a to guide insertion of the lower unit body 2. The convex portion 21a is fixed within the concave portion 53 with an adhesive 54.

Further, the rear floor member 43 of the upper unit body 4 is made of a thin plate, as shown in FIGS. 5a to 5c, and has a riser that rises rearward and upward from the engagement portion with the rear edge of the front floor member 21. portion 43a, and a horizontal surface portion 43b extending rearward substantially horizontally from the upper end of the rising portion 43a.
It has The front floor member 43 is reinforced with cross members 55, 56, side frames (not shown), etc., and a rear seat 57 is installed on the horizontal surface portion 43b of the rear floor member 43. Note that a trunk lid 58 is attached to the upper unit body 4 to cover a trunk room.

There are three types of engagement structure between the front floor member 21 and the rear floor member 43 as shown in FIGS. 5a to 5c, respectively. That is, in the engagement structure shown in FIG. 5a, an engagement part 62 having a U-shaped cross section and opening forward, which is made of both members 43 and 55, is provided on the front side of the front joint part 61 between the rear floor member 43 and the cross member 55. The rear edge of the front floor member 21 is fitted into the engaging portion 62. Furthermore, in the engagement structure shown in FIG. 5b, the rear floor member 4
A rail member 64 having a U-shaped cross section and opening forward is sandwiched between the front edge of the cross member 3 and the front edge of the cross member 55. The edges are mated. In this case, the front edge of the rear floor member 43 and the front edge of the cross member 55 are not directly joined, but are joined via the rail member 64. Furthermore, in the engagement structure shown in FIG. 5c, on the front side of the front joint part 61 between the rear floor member 43 and the cross member 55
A rail member 64 having a U-shaped cross section and opening forward is provided joined to the rear floor member 43, and the rear edge of the front floor member 21 is fitted into the rail member 64.

Next, a method of assembling a vehicle body in the case of the above vehicle body structure will be explained.

First, as shown in FIG. 1, the lower unit body 2 and the upper unit body 4 are assembled into predetermined shapes, and then the inside of the recess 53 of the side sill 51 at the bottom of each body side panel 42 of the upper unit body 4 and the rear floor are assembled. Adhesive 54 is applied within the engaging portion 62 of the front edge of the member 43 or within the rail member 64, respectively.

Next, insert the side edge 21a of the front floor member 21 of the lower unit body 2 into the recess 53 on the upper unit body 4 side.
The front floor member 21 of the lower unit body 2 is inserted between the left and right body side panels 42 of the upper unit body 4 in this fitted state. When this insertion is completed, the rear edge of the front floor member 21 is connected to the rear floor member 43.
It engages within the engaging portion 62 of the leading edge or within the rail member 64. As a result, both the left and right side edges and the rear edge of the front floor member 21 are engaged with the upper unit body 4,
The lower unit body 2 and the upper unit body 4 are assembled to each other.

In the case of such an assembly method, since the insertion direction (vehicle body longitudinal direction) of the lower unit body 2 (front floor member 21) and the supporting direction (vertical direction) by engagement are different, the engagement structure Not only does the insertion of the lower unit body and its assembly not be hindered, but
This engagement structure allows the lower unit body 2 to be supported at the inserted position. Therefore, it is not necessary to support the lower unit body 2 until the joining work of the lower unit bodies 2 is completed as in the past, and the adhesive 54 can be easily used as a method for joining both the unit bodies 2 and 4. At the same time, the number of fastening points using bolts or the like can be reduced as much as possible, and the assembly work can be facilitated and speeded up.

Moreover, when inserting the lower unit body 2, the side edge 21a of the front floor member 21 of the lower unit body 2 and the recess 53 on the upper unit body 4 side remain in a fitted state. Since the lower unit body 2 is guided in the insertion direction, insertion or assembly work can be performed reliably and quickly. Furthermore, as in this embodiment, if the adhesive 54 is applied to the inside of the recess 53 before inserting the lower unit body 2,
After inserting the lower unit body 2, it can be quickly fixed to the upper unit body 4, making it possible to further speed up the assembly work, and also to reduce the resistance caused by the adhesive 54 during insertion. It can be easily confirmed.

When inserting the lower unit body 2 relatively to the upper unit body 4 from the front side, fix the upper unit body 4 and move the lower unit body 2 rearward so as to approach it. Of course, instead of just doing this, it is also possible to fix the lower unit body 2 and move the upper unit body 4 forward so as to approach it.

6 to 8 show the structure of an automobile body according to a second embodiment of the present invention. In this second embodiment, the floor member 71 of the lower unit body 2 is connected to the dash panel 22.
The structure is configured from the side to the installation position of the rear seat 57 (see FIG. 1). The rest of the structure of the vehicle body structure is the same as in the first embodiment, and the same members are given the same reference numerals and their explanations will be omitted.

The floor member 71 includes a first horizontal surface portion 72 on which the front seat 28 (see FIG. 1) is placed, a rising portion 73 rising rearward and upward from the rear edge of the horizontal surface portion 72, and the rising portion. A second horizontal surface portion 74 extends substantially horizontally from the upper edge of the rear seat 73 and on which the rear seat 57 is placed, and the first and second horizontal surface portions 72 and 73 have a honeycomb structure made of aluminum or the like. The rising portion 73 is made of a thin plate.

On the other hand, on the interior side surface of the side sill 51 on the side of the upper unit body 4 into which such a floor member 71 is inserted, there is provided the above-mentioned first plate on the front side of the side sill 51.
A first recess 75 is formed into which the side edge, which is a convex part, of the horizontal surface part 72 is slidably fitted in the front-rear direction, and a substantially horizontal shelf is formed on the rear side of the side sill 51 and extends toward the interior of the vehicle. A first recess 77 is formed in the front edge of the shelf 76, into which a side edge, which is a convex portion, of the second horizontal surface 74 is slidably fitted in the front-rear direction.

When the lower unit body 2 is inserted into the upper body side 4 from the front side and assembled, the side edge of the first horizontal surface portion 72 is inserted into the first recess 75 and the second When the side edges of the horizontal surface portions 74 are inserted and fitted into the second recesses 77 from the front side, and the floor member 71 of the lower unit body 2 is inserted in this fitted state, this insertion operation is repeated in the above-mentioned two sets. It is adapted to be guided by the fitting between the side edges (recesses) of and the recesses 75 and 77. In addition, by assembling both unit bodies 2 and 4 by such insertion,
As in the case of the first embodiment, it is possible to greatly facilitate and speed up the assembly work, and thus the vehicle body assembly work. In the figure, 78 is a cross member provided corresponding to the rising portion 73 of the floor member 71.

FIGS. 9 and 11 to 19 show the side edges of the front floor member 21 of the lower unit body 2 and the upper unit body 4 in the first embodiment, respectively, as third to twelfth embodiments of the present invention. A modification of the engagement structure with the side side sill 51 is shown.

That is, in the case of the third embodiment shown in FIG.
A recess 81 extending in the longitudinal direction of the vehicle body is formed on the lower surface of the side edge of the front floor member 21, and a protrusion 82 that slidably fits into the recess 81 is formed on the side surface of the side sill 51 on the interior side of the vehicle. A projecting piece 83 is formed, which guides the insertion of the front floor member 21 of the lower unit body by fitting the recess 81 and the projection 82, and when the insertion is completed, the front floor member 21 is configured to engage and support the side sill 51. In this embodiment, the side edges of the front floor member 21 are inserted into the recess 84 whose lower wall is the protruding piece 83 of the side sill 51 with a clearance in the vertical direction, so as not to be exposed to the outside. It has become. Also, 85 and 86
are a cross member and a seat belt mounting bracket provided on the upper surface of the front floor member 21, respectively;
A hook portion 86a (only the bracket part is shown) having a horizontally T-shaped cross section is formed at the upper end of both members 85 and 86 on the side sill 51 side. Further, the side sill 51 is formed with a recess 87 that extends in the longitudinal direction of the vehicle body and into which the hook member 86a is slidably fitted. Then, when inserting the front floor member 21, the hook portion 86a is inserted into the recess 87, and by the insertion, both the unit bodies 2 and 4 are assembled and simultaneously attached to the side sill 51 of both the members 85 and 86. It is now possible to assemble the parts.

If the front floor member 21 has a honeycomb structure as in the embodiment, it is quite difficult to process the front floor member 21 to form the recess 81. Therefore, as shown in FIG. 10, for example, the center part in the vehicle width direction of the floor member 88 is made of a member 88a with a honeycomb structure, and the side edge part is made of a member 88b made of aluminum extraction molding. A recess 81 may also be formed.

In the case of the fourth embodiment shown in FIG. 11, the side edge of the front floor member 21 is provided with a convex portion made of a hollow member that extends in the longitudinal direction of the vehicle body and whose height dimension is larger than the thickness dimension of the floor member 21. In addition, a recess 92 into which the protrusion 91 is slidably fitted is formed on the side surface of the side sill 51 on the vehicle interior side. and,
When assembling the vehicle, remove the lower unit body (front floor member 2).
Before inserting 1), fill and inject adhesive 93 into the recess 92 (FIG. 11a), then insert and fit the protrusion 91 into the recess 92 from the front side. Insert the floor member 21 toward the upper unit body. Then, the adhesive 93 flows into and fills the convex portion 91, and the outer surface of the convex portion 92 is fixedly fitted into the concave portion 91 by the adhesive 93 (FIG. 11b).
.

In the case of the fifth embodiment shown in FIG. 12, the side edge of the front floor member 21 has a thick portion 101 as a convex portion that bulges downward and is thicker than other portions. In addition, a recess 10 is formed on the side surface of the side sill 51 on the inside side of the vehicle interior, into which the thick portion 101 is slidably fitted.
2 is formed. When assembling the vehicle body, before inserting the front floor member 21, an adhesive 104 containing beads 103, 103, . Thick wall part 1
The lower unit body and the upper unit body are assembled by inserting the front floor member 21 so as to slide the front floor member 21. During this insertion, the thick portion 101 of the front floor member 21 is inserted into the recess 102 through the bead 103.
Since it slides inside, the insertion work can be done smoothly with light force.

In the case of the sixth embodiment shown in FIG. 13, a recess 111 is provided on the side surface of the side sill 51 on the vehicle interior side, into which the side edge 21a, which is a convex portion of the front floor member 21, is fitted so as to be slidable in the longitudinal direction. is formed, and the recess 11
A U-shaped hollow portion 112 surrounding the outer periphery of 1 is formed. When assembling the vehicle body, a thermosetting adhesive 113 is applied to the recess 111 before inserting the front floor member 21 (FIG. 13a), and then the front floor member 21 is inserted into the recess 111. Insert and fit the side edges from the front side, and insert the front floor member 21 in this fitted state (Fig. 13
b). Subsequently, steam 114 is supplied into the hollow part 112, and the heat cures the adhesive 113 in the recess 111, thereby fixing the side edge 21a of the front floor member 21 to the recess 111.

In the case of the seventh embodiment shown in FIG. 14, after applying the adhesive 122 into the recess 121 formed on the side surface of the side sill 51 on the inside side of the vehicle, the side edge of the front floor member 21 is applied to the recess 121. When inserting the front floor member 21 with the protrusion 123 formed on the front part fitted, the protrusion 124 formed protruding from the lower surface of the side edge of the front floor member 21 is positioned to fit. The front floor member 21 is inserted while being supported by a floor receiving member 126 having a recess 125 on its upper end surface. In this method, the positioning of the front floor member 21 in the vehicle width direction can be reliably performed by fitting the positioning recess 125 and the protrusion 124, so that the insertion work can be performed more reliably.

In the case of the eighth embodiment shown in FIG. 15, a recess 131 is provided on the side surface of the side sill 51 on the vehicle interior side, into which the side edge 21a, which is a convex portion of the front floor member 21, is fitted so as to be slidable in the longitudinal direction. The concave portion 13
A cover member 132 that covers the side surface of the side sill 51 on the inside side of the vehicle interior above the side sill 51 is attached so as to be swingable up and down with its upper edge on the hinge side. Then, when assembling the vehicle body, adhesive 133 is applied onto the side edges 21 of the front floor member 21 before the front floor member 21 is inserted. Thereafter, the lower end of the cover member 132 is opened away from the side sill 51, and in this state, the front floor member 2 is inserted into the recess 131.
1, and the front floor member 21 is inserted (FIG. 15a). Next, the cover member 132 is closed so as to overlap the side sill 51, and the adhesive 133 on the front floor member 21 (side edge 21a) is applied to the side edge 21a using the lower hook portion 132a of the cover member 132. It is pressed into the gap between the side sill 51 and the recess 131 (FIG. 15b). As a result, the side edge 21a is attached to the recess 13 with the adhesive 133.
1, the lower end hook portion 132 is fixed onto the front floor member 21, and the cover member 132 is fixed so as to cover the side surface of the side sill 51 on the inside of the passenger compartment.

In the case of the ninth embodiment shown in FIG. 16, the side edge 21a of the front floor member 21 is fitted into the recess 141 formed on the side surface of the side sill 51 on the inside side of the vehicle interior. After inserting the adhesive 14 made of foamed urethane resin into the recess 141 through the injection hole 142.
3 to fix the side edge 21a in the recess 141. With this method, the resistance when inserting the front floor member 21 can be reduced, and the adhesive 1
43 can be prevented from peeling off from the coated surface,
Adhesive bonding can be achieved reliably. In this method, when the floor member 21 has a honeycomb structure, it is desirable to provide air holes 144 inside the floor member 21 as shown in the figure to allow air to escape when the adhesive 143 is injected.

In the case of the tenth embodiment shown in FIG. 17, a side member 151 rising substantially vertically upward is provided at the side edge of the front floor member 21. A recess 152 that opens outward and has a narrow opening is formed extending in the front-rear direction. On the other hand, on the interior side of the side sill 51, there is a convex portion 1 that fits into the concave portion 152 so as to be slidable in the longitudinal direction.
53 is formed. When assembling the vehicle body, the front floor member 21 is inserted with the convex portion 153 and the concave portion 152 fitted together, and both unit bodies are assembled. In this assembled state, the side member 151 constitutes a part of the side sill 51. In this case, the upper side sill side ends of the cross member 85 and the seat belt attachment bracket 86 provided on the upper surface of the side sill 51 are connected to the lower unit body side before inserting the lower unit body (front floor member 21). Side member 151
can be fixed to.

In the case of the eleventh embodiment shown in FIG. 18, the bottom surface of the side sill 51 has a first recess 161 that opens downward.
However, second recesses 162 that open outward are formed on the outer side surfaces of the side sills 51 and extend in the longitudinal direction of the vehicle body. On the other hand, a first protrusion 163 is formed on the side edge of the front floor member 21 and is slidably fitted into the first recess 161. An extending portion 164 is formed that extends to the outer side of the vehicle, and a second convex portion 165 that slidably fits into the second recess 162 is formed at the tip of the extending portion 164. . When assembling the vehicle body, each recess 161, 162 of the side sill 51 is
After applying the adhesive 166 to the inner and lower surfaces of the side sills 51 (FIG. 18a), the convex portions 161, 162 and the concave portions 163,
The front floor member 21 is inserted while the first and second parts 164 are fitted together, respectively, to assemble both unit bodies (FIG. 18b). In this case, since the extending portion 164 of the front floor member 21 constitutes the lower half of the vehicle outer side surface of the side sill 51, the side sill 51
You can add an accent to the appearance. Further, the shape of the side portion of the floor member 21 can be freely set.

In the case of the twelfth embodiment shown in FIG. 19, a lower side sill 171 that bulges upward is provided at the side edge of the front floor member 21, and the upper part of the lower side sill 171 is provided with an upwardly opened side sill 171. Concave portion 1 with a narrow opening
72 is formed extending in the front-rear direction. On the other hand, a protrusion 173 is formed in the lower part of the side sill 51 and is slidably fitted into the recess 152 in the front-rear direction. When assembling the vehicle body, the front floor member 21 is inserted with the convex portion 173 and the concave portion 172 fitted together, and both unit bodies are assembled. In this assembled state, the lower side sill 171 constitutes a part of the side sill 51. In this case, the upper side sill side end of the seat belt attachment bracket 86 provided on the upper surface of the side sill 51 is attached to the lower side sill 171 on the lower unit body side before the lower unit body (front floor member 21) is inserted. Can be fixed.

[0043]

As described above, according to the first aspect of the invention, the lower unit body is inserted into the upper unit body from the front side, and the side portion of the floor member of the lower unit body in the vehicle width direction is inserted into the upper unit body. By engaging and assembling the body by engaging the engaging portion on the lower edge of the body side panel, there is no need to support the lower unit body until the joining work of the lower unit body is completed as in the conventional case, and the Adhesive can be easily used as a joining method, and the number of fastening points using bolts or the like can be minimized, so that assembly work can be facilitated and speeded up.

According to the invention as set forth in claim 2, one of the side portion and the engaging portion is formed as a recess extending in the longitudinal direction of the vehicle body, and the other is formed as a convex portion that is slidably fitted into the recess. When the lower unit body is inserted into the upper unit body, the insertion of the lower unit body is guided by the engagement of the concave portion and the convex portion, so that the lower unit body can be easily inserted. This can be done reliably, and the assembly work can be made easier and faster.

In the case where the upper unit body and the lower unit body are bonded using an adhesive, in the invention according to claim 3, the adhesive is injected into the recess before inserting the lower unit body. By fixing the protrusion in the recess with this adhesive when inserting the protrusion, workability can be improved and adhesion can be easily confirmed. Further, in the invention according to claim 4, after the lower unit body is inserted, an adhesive is injected into the recess, and the protrusion is fixed in the recess with the adhesive, thereby reducing resistance during insertion. At the same time, adhesive peeling can be prevented, and adhesive bonding can be performed reliably.

According to the invention set forth in claim 5, similarly to the invention set forth in claim 2, there is no need to support the lower unit body until the work of joining the lower unit bodies is completed, and the method for joining both bodies is In addition to being able to easily use adhesives as an adhesive, the number of fastening points using bolts, etc. can be minimized, and the lower unit body can be inserted easily and reliably, making assembly work easier. It can be made easier and faster.

According to the invention as set forth in claim 6, since the engaging portion is provided on the interior side of the lower edge of the body side panel, the engaging portion and the side portion of the floor member are not engaged with each other. The structure can be simplified and the impact on the appearance can be reduced.

Further, according to the seventh aspect of the present invention, the engaging portion is provided on the outer side of the vehicle interior at the lower edge of the body side panel, while the side portion of the floor member bypasses the lower edge of the body side panel and is attached to the vehicle interior. Since it extends to the outside of the room, the side portion can accentuate the vicinity of the lower edge of the body side panel, and the degree of freedom in the shape of the side portion etc. can be increased.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing the body structure of an automobile according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view with accessories removed.

FIG. 3 is a perspective view showing the assembled state of the vehicle body.

FIG. 4 is a sectional view showing an engagement structure between a front floor member and a side sill.

FIG. 5 is a sectional view showing an engagement structure between a front floor member and a rear floor member.

FIG. 6 is a diagram corresponding to FIG. 2 showing a second embodiment.

FIG. 7 is a perspective view of the vicinity of the side sill.

FIG. 8 is a sectional view showing an engagement structure between a floor member and a side sill.

FIG. 9 is a diagram corresponding to FIG. 4 showing a third embodiment.

FIG. 10 is a sectional view showing a modification of the front floor member.

FIG. 11 is a diagram corresponding to FIG. 4 showing a fourth embodiment.

FIG. 12 is a diagram corresponding to FIG. 4 showing a fifth embodiment.

FIG. 13 is a diagram corresponding to FIG. 4 showing a sixth embodiment.

FIG. 14 is a diagram corresponding to FIG. 4 showing a seventh embodiment.

FIG. 15 is a diagram corresponding to FIG. 4 showing an eighth embodiment.

FIG. 16 is a diagram corresponding to FIG. 4 showing a ninth embodiment.

FIG. 17 is a diagram corresponding to FIG. 4 showing a tenth embodiment.

FIG. 18 is a diagram corresponding to FIG. 4 showing an eleventh embodiment.

FIG. 19 is a diagram corresponding to FIG. 4 showing a twelfth embodiment.

[Explanation of symbols]

1 Vehicle body 2 Lower unit body 4 Upper unit body 21 Front floor member 41 Roof member 42 Body side panels 53, 75, 77, 81, 92, 102, 111, 12
1,131,141,152,161,162
Recessed portions 21a, 82, 91, 123, 153, 163, 1
65, 173 Convex portion 54, 93, 104, 113, 122, 133, 166
Adhesive 71, 88 Floor material

Claims (7)

[Claims] Claim 1: A vehicle body is divided into at least a lower unit body having a floor member, and an upper unit body having a roof member and left and right body side panels, and the lower unit body is arranged relative to the upper unit body. A method for assembling an automobile body, the method comprising: inserting the lower unit body from the front side, and assembling the floor member of the lower unit body by engaging the side portion in the vehicle width direction with the engaging portion of the lower edge of the body side panel of the upper unit body. . 2. One of the side portion and the engaging portion is formed as a recess extending in the longitudinal direction of the vehicle body, and the other is formed as a convex portion that slidably fits into the recess, and the lower unit body 2. The method for assembling an automobile body according to claim 1, wherein the relative insertion of the lower unit body is guided by engagement between the recess and the protrusion when the lower unit body is inserted relative to the upper unit body. 3. An adhesive is injected into the recess before the relative insertion of the lower unit body, and the protrusion is fixed in the recess with the adhesive when the relative insertion of the lower unit body is completed. The method of assembling the car body described above. 4. The method for assembling an automobile body according to claim 2, wherein an adhesive is injected into the recess after the lower unit body is relatively inserted, and the protrusion is fixed within the recess with the adhesive. 5. The vehicle body is divided into at least a lower unit body having a floor member, and an upper unit body having a roof member and left and right body side panels, and the lower unit body has a lower unit body relative to the upper unit body. is inserted from the front side of the lower unit body, and is assembled by engaging the side part in the vehicle width direction of the floor member of the lower unit body with the engaging part of the lower edge of the body side panel of the upper unit body, and the side part and the engaging part One of the mating parts is formed as a recess extending in the longitudinal direction of the vehicle body, and the other is formed as a convex part that slidably fits into the recess, so that the lower unit body is relatively inserted into the upper unit body. A body structure for an automobile, characterized in that the lower unit body is guided when the lower unit body is inserted by fitting the concave portion and the convex portion. 6. The vehicle body structure of claim 5, wherein the engaging portion is provided on the inside of the vehicle at the lower edge of the body side panel. 7. The engaging portion is provided on the outer side of the vehicle interior at the lower edge of the body side panel, and the side portion of the floor member that engages with the engaging portion bypasses the lower edge of the body side panel. The vehicle body structure of claim 5, wherein the vehicle body structure extends to the outside of the vehicle interior.