JPH08268332A - Frame coupling structure of vehicle - Google Patents

Abstract

PURPOSE: To provide frame coupling structure in which high coupling strength can be obtained and besides which can suppress the number of part items and also improve the work efficiency, though it improves external appearance by constituting it such that the coupling structure does not appear on the external surface of the car body, at the time of coupling the fellow frame members having external surface parts to form the external surfaces of the car body integrally and being made by extrusion molding. CONSTITUTION: A roof side rail 2 and a pillar 3 are made in the shape of fixed cross sections, which have outer panels 21a and 31a, by extrusion molding, and also structures 25 and 35 for coupling are provided at the ends, and the fellow side pieces 25a and 35a inside the car positioned inside the outer panels 21a and 31a and the fellow side pieces 25b and 35c outside the car are laid on top of the other, and engaging projection 25e and an engaging groove 35n and an engaging projection 35g and an engaging groove 25d are engaged and coupled with each other, respectively, by bolts 7 and nuts 35k.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle skeletal joint structure.

[0002]

2. Description of the Related Art Conventionally, as a skeleton connecting structure of a vehicle, for example, one disclosed in Japanese Utility Model Laid-Open No. 132481/1989 is known.

In this conventional vehicle skeletal joint structure, a frame is formed by each tubular skeletal member, and the outer side thereof is covered with a press-molded panel. The skeletal members are joined at substantially right angles. In the part, the retainer is fixed to one skeleton member with bolts and nuts so that it is located at that corner, and the other skeleton member is bolted to this retainer.
It has a connection structure that is fixed with a nut and connected.

Alternatively, there is known a technique for joining skeletal members by spot welding or CO ₂ welding.

[0005]

However, in the above-described skeletal joint structure, the large number of parts is required because of the large-sized retainer having a substantially triangular shape in the corner portion where the skeletal members abut. There is a problem. Further, the connecting work requires two connecting works, one for connecting the one frame member and the retainer and one for connecting the retainer and the other frame member, resulting in poor workability. there were. In addition, it is necessary to provide a member for covering the retainer after the connection, which causes a problem that the labor and cost of the work increase correspondingly.

Further, in order to reduce the weight of the vehicle, it is considered to form the skeletal member by extruding aluminum, but when iron is used for the retainer and the bolts and nuts, electrolytic corrosion occurs. Further, if a retainer and bolts / nuts made of aluminum are used, the risk of electrolytic corrosion is eliminated, but the retainers and bolts / nuts are very expensive and it is difficult to obtain sufficient strength.

By the way, when forming the skeletal member by extrusion molding, the present applicant has proposed that the portion forming the outer surface of the vehicle body is also formed into an integrally formed sectional shape. As a result, the structure can be simplified, and further, a lightweight material such as aluminum can be used as the material of the skeletal member to reduce the weight.

However, in the case of connecting such skeleton members, when the above-mentioned conventional connection is used, the above problems occur, and when the skeleton members are directly connected so as not to cause the above problems. However, when the parts forming the outer surface of the vehicle body are joined together, there arises a problem that this joining structure, that is, the bolts / nuts or welding marks appear on the outer surface. Therefore, if the connection is performed only inside the skeleton member so that the connection structure is not exposed to the outside of the vehicle, there is a problem that the connection strength is insufficient.

The present invention has been made by paying attention to the above-mentioned conventional problems, and in connecting frame members formed by extrusion with integrally forming an outer surface portion forming an outer surface of a vehicle body, The joint structure does not appear on the outer surface of the vehicle body, and while it looks good, high joint strength is obtained.
Moreover, it is an object of the present invention to provide a skeletal bond structure that can reduce the number of parts and improve workability.

[0010]

In order to achieve the above-mentioned object, a vehicle skeletal joint structure of the present invention extends along an outer surface of a vehicle body to form a vehicle skeleton, and ends thereof are substantially orthogonal to each other. The first skeleton member and the second skeleton member, which are bonded together,
Each skeleton member is formed by extrusion molding to have a constant cross-sectional shape, and each skeleton member is provided with an outer surface portion forming an outer surface of the vehicle body and a vehicle interior position relative to the outer surface portion. An outer-side piece and an inner-side piece located on the outer side are integrally formed and extend in the longitudinal direction, and the outer-side piece and the inner-side piece of the first frame member and the second frame member. The outer side piece and the inner side piece are formed at positions overlapping with each other in a connected state, and a first joint portion is provided at an end portion of the first skeleton member, while an end portion of the second skeleton member is provided. A second coupling part for coupling with the first coupling part is provided, and at least one of the both coupling parts has a part of the outer surface part cut out so that the outer surface parts do not interfere with each other in the coupled state of both skeleton members. , The connecting portions are the outer side pieces and the inner side pieces. It has a structure that is coupled in superposed cow.

According to a second aspect of the present invention, at least one of the first coupling portion and the second coupling portion is integrally formed with an engagement protrusion in the longitudinal direction of the vehicle outer side piece and the vehicle inner side piece, and On the other hand, an engaging groove engageable with the engaging protrusion is formed in a direction orthogonal to the longitudinal direction when both the skeleton members are arranged at the regular coupling position.

According to a third aspect of the present invention, one of the first and second connecting portions is projected in a direction substantially orthogonal to an end of at least one of the vehicle outer side piece and the vehicle inner side piece, and at the time of connection, the other connecting portion is connected. A stopper piece is formed so as to abut the tip surface of at least one of the outer side piece and the inner side piece.

[0013]

In the present invention, when the first skeleton member and the second skeleton member are joined, the first joint portion at the end of the first skeleton member,
The second joint portion at the end of the second skeleton member is brought into contact with the vehicle outer side pieces, and the vehicle inner side pieces are brought into contact with each other, and each piece is provided with means such as bolts, nuts or welding. Use to bind.

In such a joint structure, since the first and second skeleton members are joined by the two pieces, the vehicle outer side piece and the vehicle inner side piece, high joint strength can be obtained.

According to the second aspect of the present invention, when the first coupling portion and the second coupling portion are coupled with each other, the engaging projection integrally formed in one longitudinal direction is formed with the engaging groove formed in the other. And position it. Alternatively, the other engaging protrusion integrally formed in the longitudinal direction is engaged with the one engaging groove.

Therefore, the outer side piece and the inner side piece are brought into contact with each other to position the one skeleton member in the vehicle inside / outside direction, which is the direction orthogonal to the axis, and at the same time, the engaging protrusions and the other side of each coupling portion The positioning of one of the skeletal members in the longitudinal direction is carried out by the engagement with the engaging groove of, so that the positioning in two directions (two-dimensional positioning) can be carried out. By engaging the other engaging protrusion with the one engaging groove, the other skeleton member can be positioned in the longitudinal direction, whereby positioning in three directions (positioning in three dimensions) is performed.

According to the third aspect of the present invention, the stopper piece of one of the connecting portions is used for positioning when the first connecting portion of the first frame member and the second connecting portion of the second frame member are positioned.
The other joint portion is brought into contact with the tip end surface of the vehicle outer side piece or the vehicle inner side piece to position the one skeleton member in the axial direction.

[0018]

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

FIG. 2 is a perspective view showing a vehicle (small bus) to which the skeletal joint structure for a vehicle of the embodiment of the present invention is applied. The structure of this embodiment is a portion indicated by A in the drawing, that is, the roof 1 of the vehicle body. Of roof side rails (first and second skeleton members) 2 that extend in the front-rear direction over substantially the entire side of the vehicle and pillars (first and second skeleton members) 3 that are erected on the vehicle body , And the roof front rail (first and second skeleton members) 4 extending in the vehicle width direction over substantially the entire width of the front end of the roof 1 is applied.

FIG. 3 is a view showing the cross-sectional shape of the roof side rail 2 in the direction of arrow Y3 in FIG. 1, and the roof side rail 2 is formed by extrusion molding of aluminum into a constant cross-sectional shape over the entire length. Then, the outer cylinder 21 formed in a tubular shape, the vertical ribs 22 and the horizontal ribs 23 vertically and horizontally provided inside the outer cylinder 21, and the corner reinforcing ribs 24 provided inside the corner portion are integrally formed. Is formed in.
Further, the outer cylinder 21 has an outer panel portion (outer surface portion) 21a that forms an outer surface of the vehicle body on the roof side portion, and a supporting step portion that supports the roof panel 1a (see FIG. 2) that constitutes the roof 1. 21b and a groove 21c for supporting the side surface glass 5 (see FIG. 2) are formed, and a supporting flange 21d for supporting the roof panel 1a is also provided on the vehicle inner surface of the outer cylinder 21 in a protruding manner. , Drip 21e on the outside of the car
Is protruding.

Further, the roof side rail 2 is formed with a coupling structure (first and second coupling portions) 25 shown in FIG. The coupling structure 25 is formed by the vehicle inner side piece (first and second vehicle inner side pieces) 25a which is a part of the vehicle inner side of the outer cylinder 21 and the vertical rib 22 and faces the vehicle inner side piece 25a. The outer side piece (first and second outer side pieces) 25b, and a connecting piece 25c formed by the lateral ribs 23 and connecting the upper end of the inner side piece 25a and the upper end of the outer side piece 25b. It is formed in a shape. Further, in this coupling structure 25, engagement grooves 25d, 25d having a V-shaped cross section are formed in the vertical direction on the front side surface at positions near the tips of the vehicle inside piece 25a and the vehicle outside piece 25b, and are also shown in FIG. 25a inside the car
In addition, mountain-shaped engaging projections 25e, 25e are formed on the back side surface of the upper end of the vehicle outer side piece 25b over the entire length of the roof side rail 2. Further, through holes 25f, 25f are coaxially formed at positions slightly rearward from the front ends of the vehicle inner side piece 25a and the vehicle outer side piece 25b at substantially vertical center positions.

Next, the pillar 3 is formed by extrusion molding of aluminum and has a constant cross-sectional shape over the entire length. As shown in FIG. 4 which is a view Y4 in FIG. The outer cylinder 31 formed in the irregularly shaped cylindrical shape
Further, two horizontal ribs 32 and 33 vertically and horizontally provided inside the outer cylinder 31 and one vertical rib 34 are integrally formed. Further, the outer cylinder 31 is integrally formed with an outer panel portion (outer surface portion) 31a forming an outer surface of a front end corner portion of the vehicle body.

Further, as shown in FIG. 1, a coupling structure (first and second coupling portions) 35 is formed at the upper end of the pillar 3 by cutting out the outer cylinder 31 and the like. That is, the coupling structure 35 includes a first vehicle inner side piece (first and second vehicle inner side pieces) 35a formed by a part of the outer cylinder 31 on the vehicle inner side.
And a connecting piece 3 formed at the rear end portion of the outer cylinder 31 and integrally connected to the rear end of the first vehicle inner side piece 35a substantially orthogonally thereto.
5b, a part of the outer cylinder 31 and the vertical ribs 34, and a first vehicle outer side piece (first vehicle inner side piece 35a facing the first vehicle inner side piece 35a).
A second vehicle outer side piece) 35c, a second vehicle inner side piece (first / second vehicle inner side piece) 35d formed by the lateral ribs 33, and a part of the lateral ribs 32 35d inside the car
And a second vehicle outer side piece 35e opposed to. Then, in this coupling structure 35, the first vehicle inner side piece 35
An engagement groove 35n having a V-shaped cross section is formed in the front-rear direction on the outer side of a and on the outer side of a position slightly lower than the upper end of the first vehicle outer side piece 35c. Further, the first vehicle inner side piece 35a
Engaging flanges 35f, 35f having a substantially L-shaped cross section extend in the up-down direction over the entire length of the pillar 3, and on the outer side of the first vehicle outer side piece 35c.
On the back side of f, mountain-shaped engagement protrusions 35g, 35g that engage with the engagement groove 25d are formed. The upper end of the engagement flange 35f is cut off, and the engagement flange 35f is disposed slightly below the engagement groove 35n.

As shown in FIG. 4, mountain-shaped engaging projections 35h, 35h are formed on the back sides of the second vehicle inner side piece 35d and the second vehicle outer side piece 35e over the entire length of the pillar 3. There is. Further, through holes 35j, 35j are coaxially bored at positions slightly lower than the upper ends of the first vehicle inner side piece 35a and the first vehicle outer side piece 35c, and a nut 35k is adhered to the back side thereof. Also, the second car inner piece 35d
Also, the second vehicle outer side piece 35e has through holes 35m, 35
m is coaxially drilled.

The roof front rail 4 is formed by extrusion molding of aluminum and has a constant cross-sectional shape over the entire length, and is formed in a tubular shape as shown in FIG. 5, which is a view Y5 in FIG. The outer cylinder 41 that is present, and two lateral ribs 42 and 43 and one vertical rib 44 that are integrally formed inside the outer cylinder 41 and are provided at different levels are integrally formed. Further, an outer panel portion (outer surface portion) 41a that forms an outer surface of the vehicle body at the front end portion of the roof is formed on the outer cylinder 41, and the roof panel 1a is provided on the upper inside of the vehicle.
While a supporting flange 41b for supporting the vehicle is projected, a supporting flange 41c for supporting the window glass 6 (see FIG. 2) is projected on the lower portion.

At both ends of the roof front rail 4 (only the left end of the vehicle is shown), an outer cylinder 41 and the like are cut out to show the connecting structure (first and second connecting portions) 4 shown in FIG.
5 is formed. That is, this coupling structure 45
Is a vehicle-inside piece (first
A second vehicle inner side piece) 45a, and a vehicle outer side piece 45b formed by the vertical ribs 44 and opposed to the vehicle inner side piece 45a.
And a connecting piece 45c formed by the lateral rib 43 for connecting the vehicle inner side piece 45a and the vehicle outer side piece 45b, and an upper end portion of the first vehicle outer side piece 44 formed by a part of the lateral rib 42. Engagement flange (stopper piece) protruding from the front of the vehicle
45d and. Then, the coupling structure 45
Then, engaging grooves 45e, 45e each having a substantially V-shaped cross section are provided on the front side near the tip of the first vehicle inner side piece 45a and on the front side of the tip of the first vehicle outer side piece 45b in the vertical direction which is a direction orthogonal to the axis. Further, the through holes 45f, 45 are formed at positions closer to the vehicle center than the engagement grooves 45e of the pieces 45a, 45b.
f is formed, and a nut 45g is provided on the back side.
Are glued together.

Next, the procedure of the joining operation by the joining structure of the embodiment will be described.

First, in the preceding step of the joining step, the frame side members, which are the bases of the roof side rails 2, the pillars 3, and the roof front rails 4, which are formed in a constant cross section by extrusion molding, are notched, and the grooves are further processed. The structure for coupling 25, 35, 45 is formed by performing a drilling process or by bonding a nut to complete the roof side rail 2, the pillar 3, and the roof front rail 4, respectively.

Next, after the pillar 3 is erected on the vehicle body, the connecting structure 45 of the roof front rail 4 is moved from above and connected to the connecting structure 35 of the pillar 3. At this time, the engaging grooves 45e, 45e of the coupling structure 45
And the engaging protrusions 35h, 35h of the coupling structure 35 are arranged so as to vertically overlap with each other, and the inside-side piece 45a and the outside-side piece 45b are disposed between the second inside-side piece 35d and the second outside-side piece 35e. Move it so that it is pinched. Then, in this movement, the lower surface of the engaging flange 45d is the second vehicle outer side piece 3
5e is abutted against the upper end surface of the vehicle body 5e and regulated. At this point, the vehicle-side piece 45a and the vehicle-side piece 45b are brought into contact with the second vehicle-side piece 35d and the second vehicle-side piece 35e to position the front-rear direction. The engaging projection 35h and the engaging groove 45 are formed.
Positioning in the vehicle width direction is performed by engagement with e, and vertical positioning is performed by contact between the upper end surface of the second vehicle outer side piece 35e and the engagement flange 35f. The positions of the through holes 35m and 35m of the structure 35 and the positions of the through holes 45f and 45f of the coupling structure 45 match.

Next, the bolt 7 is inserted through the through hole 35m and fastened with the nut 45g. From the above, the pillar 3
And the roof front rail 4 are connected.

Next, the procedure for connecting the pillar 3 and the roof side rail 2 will be explained.
Is connected to the upper end of the pillar 3 from the rear,
At this time, the rear surfaces of the vehicle interior side piece 25a and the vehicle exterior side piece 25b of the coupling structure 25 are attached to the first vehicle interior side piece 35 of the coupling structure 35.
a and the surface of the first vehicle outer side piece 35c, and each piece 25a of the coupling structure 25 in the engaging grooves 35n, 35n extending in the front-rear direction at the upper end of the coupling structure 35. , 2
Engagement projections 25e, 25 formed on the back surface of 5b
The roof side rail 2 is moved forward so as to be inserted into e. Then, the engaging grooves 25d, 25d of the coupling structure 25 and the engaging protrusions 35g, 35g of the coupling structure 35 are engaged with each other by moving them forward by a predetermined amount. That is, the roof side rail 2 and the pillar 3 are positioned in the vertical direction by the first engagement between the engagement protrusion 25e and the engagement groove 35n, and the vehicle inside piece 25a and the vehicle outside piece 25 are positioned.
Positioning in the vehicle width direction is performed by contacting b with the first vehicle inner side piece 35a and the first vehicle outer side piece 35c, and the engaging groove 25d
Positioning in the front-rear direction is performed by the engagement of the engagement protrusion 35g with the engaging projection 35g. As a result of this positioning, the coupling structure 2
The positions of the through holes 25f and 25f of No. 5 and the through holes 35j and 35j of the coupling structure 35 are aligned.

Next, the bolt 7 is inserted through the through hole 25f and fastened to the nut 35k. With the above, the connection between the roof side rail 2 and the pillar 3 is completed. FIG. 6 shows the state after this coupling. In addition, each outer panel portion 21
The space portion formed between a, 31a, 41a is
Attach a cap member (not shown) to close it.

As described above, in the structure of this embodiment,
Since each member of the roof side rail 2, the pillar 3, and the roof front rail 4 is formed by extrusion molding of aluminum including the portion forming the outer surface of the vehicle body, the manufacturing is easy, the structure is simplified, and the cost is reduced. It is possible to obtain the effect that the weight of the vehicle can be reduced.

Further, when the roof side rails 2, the pillars 3, and the roof front rails 4, which are skeleton members having a portion forming the outer surface of the vehicle body, are coupled for the simplification as described above, the outer surface of the vehicle body is connected to each of them. The outer side panel portions 21a, 31a, 41a that form the inner side piece 25a formed to face the inner side position and the outer side piece 25b, the coupling structure 25, the first and second inner side pieces 35a,
35d and the connecting structure 35 having the first and second vehicle outer side pieces 35c and 35e, and the connecting structure 45 having the vehicle inner side piece 45a and the vehicle outer side piece 45b are integrally formed. Since it is joined with two pieces, the high joining strength can be obtained, and the bolt 7 and the nuts 35j, 4 for joining can be obtained.
5g is not exposed to the outside and has a good appearance. In addition, there is no separate member such as a retainer, so that the number of parts can be reduced, the appearance can be improved, and workability can be improved. Is obtained.

Further, each coupling structure 25, 35, 45
The engaging grooves 25d, 35n, 45e and the engaging protrusion 2
Since 5e, 35g, and 35h are formed and the positioning is performed by engaging them, the effect that the positioning can be easily performed is obtained.

Further, the coupling structure 35 and the coupling structure 4
In the coupling structure with 5, the engaging flange 45d is brought into contact with the upper end surface of the second vehicle outer side piece 35e to perform the positioning. Therefore, the positioning is easy, and in addition, the vertical support after the coupling is provided. Can be shared by this engagement, and an effect that high bond strength can be obtained is obtained.

Although the embodiment has been described above, the specific structure is not limited to this embodiment, and even if there is a design change within the scope of the invention, the invention is included in the invention.

For example, the shape of the engaging flange 35f of the embodiment is not limited to that shown in the embodiment,
7A to 7F show the modified examples.

Further, in the embodiment, the example in which the skeleton member is made of aluminum is shown, but as the material of the skeleton member,
The material is not limited to aluminum, and other metals such as duralumin or a hard resin can be used.

[0040]

As described above, in the vehicle skeletal joint structure of the present invention, the first and second skeletal members have a constant cross-sectional shape having an outer surface portion forming an outer surface by extrusion molding. The outer side portion and the inner side portion are formed inside the outer surface portion of each skeleton member, and the outer side portion and the inner side portion of the first joint portion and the second joint portion provided at the end of each member Since it has a combined structure in which one side is overlapped with the other, the outer panel of the skeleton member outside the vehicle can be eliminated and the structure can be simplified, which is also effective in reducing the weight of the vehicle. In addition, since no retainer is required at the joint, the number of parts can be reduced and
The joining work is only required to join the skeletal members together, which has the effect of improving workability.In addition, the joining structure such as bolts, nuts, and welding marks can be achieved while the outer surface is integrated. The effect of not appearing on the outer surface of the vehicle body, good appearance, and high bond strength can be obtained.

In the structure according to the second aspect of the present invention, since the engaging projections are formed in the longitudinal direction of at least one of the first and second coupling portions, the inner side piece and the outer side piece, and the other side is formed with the engaging groove, In addition to the positioning by the contact between the vehicle outer side piece and the vehicle inner side piece, the positioning can be performed by the engagement between the engagement protrusion and the engagement groove, and an effect of facilitating the positioning is obtained.

According to the third aspect of the invention, the stopper piece is formed so as to come into contact with at least one tip end surface of the vehicle exterior side piece and the vehicle interior side piece of the other coupling portion when the first and second coupling portions are coupled. In addition, the stopper piece and the outer side piece or the inner side piece of the inner side of the vehicle can be brought into contact with each other to position them, and after the connection, the supporting force can be shared by the contact portion to obtain high connection strength. can get.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a skeletal joint structure of a vehicle according to an embodiment of the present invention.

FIG. 2 is a perspective view of a vehicle to which the embodiment coupling structure is applied.

FIG. 3 is a view Y3 of FIG. 1 showing a roof side rail.

FIG. 4 is a view Y4 of FIG. 1 showing a pillar.

FIG. 5 is a view Y5 in FIG. 1 showing a roof front rail.

FIG. 6 is a perspective view of an embodiment coupling structure.

FIG. 7 is a plan view showing another example of the engagement flange.

[Explanation of symbols]

 2 roof side rails (first and second skeleton members) 21a outer panel portion (outer surface portion) 25 coupling structure (first and second coupling portions) 25a vehicle inner piece 25b vehicle outer piece 25d engagement groove 25e engagement Joint protrusion 3 Pillar (first and second frame members) 31a Outer panel portion (outer surface portion) 35 Coupling structure (first and second joint portions) 35a First vehicle inner piece 35c First vehicle outer piece 35d Third 2 vehicle inner side piece 35e second vehicle outer side piece 35g engaging protrusion 35n engaging groove 4 roof front rail (first and second frame members) 41a outer side panel portion (outer surface portion) 45 coupling structure (first and first 2 coupling part) 45a car inside piece 45b car outside piece 45d engaging flange (stopper piece) 45e engaging groove

Claims (3)

[Claims] 1. A first body extending along an outer surface of a vehicle body to form a skeleton of the vehicle body, the ends of which are joined substantially orthogonally to each other.
The skeleton member and the second skeleton member are each formed into a constant cross-sectional shape by extrusion molding, and each skeleton member has an outer surface portion forming an outer surface of the vehicle body,
A vehicle-outside piece and a vehicle-inside piece located relatively inside the vehicle, which are arranged to face the vehicle-inside position with respect to the outer surface portion, respectively, are integrally formed and extend in the longitudinal direction. An outer-side piece and an inner-side piece of the first skeleton member and an outer-side piece and an inner-side piece of the second skeleton member are formed at positions overlapping each other in a coupled state, and an end of the first skeleton member. The first connecting portion is provided in the portion, while the second connecting portion that is connected to the first connecting portion is provided at the end portion of the second skeleton member, and at least one of the both connecting portions is the connection of the both skeleton members A part of the outer surface portion is cut out so that the outer surface portions do not interfere with each other in a state, and the coupling portions are coupled in a state where the vehicle outer side pieces and the vehicle inner side pieces are overlapped with each other. And the skeletal structure of the vehicle. 2. An engaging projection is integrally formed on a vehicle outer side piece and a vehicle inner side piece in the longitudinal direction of at least one of the first coupling portion and the second coupling portion, and both of them are formed on the other side. 2. The skeleton of a vehicle according to claim 1, wherein an engaging groove engageable with the engaging protrusion is formed in a direction orthogonal to a longitudinal direction when the skeleton member is arranged at a regular coupling position. Bond structure. 3. One of the first and second coupling portions is projected in a direction substantially orthogonal to at least one end of the vehicle outer side piece and the vehicle inner side piece, and at the time of coupling, the vehicle outer side piece of the other coupling portion. The vehicle frame skeletal joint structure according to claim 1 or 2, wherein a stopper piece that abuts at least one of the front end surfaces of the vehicle inner side piece is formed.