JPH0780570A - T-shape / Y-shape connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to extruded shape members made of aluminum or aluminum alloy, or to a joint structure of extruded shape members and die castings, and is suitable for use as a vehicle frame material,
Particularly, it is a connecting structure for connecting the second member to the first member in a T-shaped or Y-shaped abutting state via a joint part, and a T-shaped structure that allows the second member to be easily connected to the first member. It is intended to provide a Y-shaped bond structure. A connecting structure for connecting a second member 2 to a first member 1 in a T-shaped or Y-shaped abutting state via a joint part 3, wherein the first member 1 has at least two connecting portions 1a. Is formed, and the joint part 3 is provided with at least two connecting portions 3a that engage with the connecting portion 1a of the first member, and a mounting portion 3b of the second member is formed. -It was constructed as a Y-shaped connection structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a frame member, and more particularly to a connecting structure for connecting a second member to a first member in a T-shaped or Y-shaped butted state via a joint part. It is suitable for use as a joint portion of a vehicle frame material.

[0002]

2. Description of the Related Art Conventionally, it has been considered to use a frame material made of aluminum or an aluminum alloy as a structural member for a frame structure of a vehicle such as an automobile, a motorcycle or the like, and the weight reduction thereof has recently been advanced. Among them, it is getting more and more attention. FIG. 12 is a perspective view of a frame structure of an automobile body, which includes a roof pillar 21, a center pillar 22, a roof pillar 21, a front roof rail 23, a roof pillar 21, and a rear roof rail 24.
The parts such as the side sill 25 and the center pillar 22 are
The first member and the second member are connected to each other in a T-shaped or Y-shaped butted state. Conventionally, the connecting portions such as the roof pillar 21 and the front roof rail 23, the roof pillar 21 and the rear roof rail 24, and the like are connected via joint parts 31 and 32, respectively, and the roof pillar 21 and the center pillar 22, the side sill 25 and the center pillar 22, and the like. The joint portion is directly joined by known means such as welding, adhesion, brazing, and screwing.

[0003]

For example, in the above example, the roof pillar 21 and the front roof rail 23,
The roof pillar 21 and the rear roof rail 24 are connected to each other by fixing the joint parts 31 and 32 to the roof pillar 21 by welding or the like and connecting the front roof rail 23 and the rear roof rail 24 to the joint parts 31 and 32.
The joint parts 31 and 32 were first fixed to the front roof rail 23 or the rear roof rail 24, and then fixed to the roof pillar 21. Further, as another means, the roof pillar 21 is divided at the above-mentioned connecting portion, and the roof pillar 21 is connected by using a three-way joint. Furthermore, roof pillar 2
At the joints such as 1 and the center pillar 22, and the side sill 25 and the center pillar 22, it is difficult to perform positioning when fixing by welding or the like, and temporary joining is required. In either case, there is a problem that the number of working steps increases. SUMMARY OF THE INVENTION It is an object of the present invention to provide a T-shaped / Y-shaped connection structure that solves the above-mentioned problems in the conventional connection structure and can easily connect the second member to the first member.

[0004]

To achieve the above object, the present invention provides a connecting structure for connecting a first member and a second member to each other in a T-shaped or Y-shaped butted state via a joint part. At least two joints are formed on the first member, and the joint part is provided with at least two joints engaging with the joints of the first member. T-shape with the attachment part of
A Y-shaped bond structure was constructed.

[0005]

The joint part is joined with its joint part snap-fitted into the joint part of the first member. The second member is fixed to the joint part as in the conventional case. Embodiments of the present invention will be described in detail below with reference to the drawings.

[0006]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 (a) and 1 (b) are a perspective view and a partial sectional view of a T-shaped coupling structure shown in a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of each part thereof. In the figure, reference numeral 1 is a first member that constitutes a roof pillar in a frame structure of an automobile body, and reference numeral 2 is a second member that also constitutes a center pillar. The first member and the second member are joined in a T-shaped butting state via the joint part 3.

The first member 1 and the second member 2 are made of extruded profiles made of aluminum or aluminum alloy,
Further, as the joint part 3, a die cast product, an extruded shape member press-molded, or an extruded shape member bulge-molded and divided as described later is used. The first member 1 is made of a hollow material having a square cross section,
Two coupling recesses 1a, 1a to be engaged with the joint component 3 are formed on the upper and lower surfaces thereof. The joint component 3 is a component having a U-shaped cross-section, and the mounting portions 3b and 3b of the second member 2 are formed to project flatly on the upper and lower rear portions, and the first member is joined to the tip of the opening. Recess 1a,
Two coupling projections (claws) 3a, 3 to be engaged with 1a
a. The second member 2 is a hollow member extruded in a flat shape, and has fins 2a, 2a formed on the left and right.

In order to connect the first member 1 and the second member 2 via the joint part 3, as shown in FIG.
Mounting part 3 in which the second member 2 is formed on the joint part 3
After being inserted between b and 3b and caulking both left and right sides,
As shown in (a) of (a), if necessary, they are firmly joined by means such as resistance welding, MIG welding, TIG welding, and laser welding. As shown in FIG. 2, the joint part 3 to which the second member 2 is attached has the claw portions 3 a and 3 a of the first member 1 as shown in FIG.
A so-called snap type is fitted into the connecting recesses 1a, 1a of the strip (see (a) and (b) of FIG. 1) and temporarily connected.
At this time, an adhesive is applied to the temporary joint portion if necessary.
The first member 1 and the joint component 3 are further firmly joined together by means such as MIG welding, TIG welding, laser welding or the like after temporary joining if necessary.

FIG. 3 is a perspective view of a T-shaped connecting structure according to the second embodiment of the present invention, and FIG. 4 is an exploded perspective view of each part thereof. In these figures, the same reference numerals as those used in FIGS. 1 and 2 indicate common members and portions, and therefore their explanations are omitted. The joint component 3 is provided with a bulge 3c having an outer diameter smaller than the inner diameter of the shape of the second member 2 in the rear center thereof, and forms a mounting portion 3b of the second member 2. In order to connect the first member 1 and the second member 2 via the joint component 3, as shown in FIG. 4, first, if necessary, the second member 2 is adhered to the mounting portion 3b formed on the joint component 3 by bonding. After applying the agent, it is externally fitted, and as shown in FIG. 3, if necessary, firmly joined by means of resistance welding, MIG welding, TIG welding, laser welding or the like. Next, in the joint part 3 to which the second member 2 is attached, as in the first embodiment, as shown in FIG.
The two coupling recesses 1a, 1a of the member 1 are snap-fitted into each other and temporarily bonded, and then firmly joined by welding.

FIG. 5 is a perspective view of a T-shaped coupling structure showing a third embodiment of the present invention, and FIG. 6 is an exploded perspective view of each part thereof. In these figures, the same reference numerals as those used in FIGS. 1 and 2 indicate common members and portions, and therefore their explanations are omitted. In the joint part 3, a flat part 3d is formed in a projecting manner on the rear upper part thereof, and the tip end side thereof is hollowed to form hook-shaped parts 3e, 3e on both sides, and an outer diameter smaller than the shape member inner diameter of the second member 2 at the center. The second member 2 is provided with the bulging portion 3f.
To form a mounting portion 3b. In order to connect the first member 1 and the second member 2 via the joint part 3, as shown in FIG. 6, first, the attachment part 3b formed on the joint part 3 of the second part 2, that is, the hook-shaped part 3e. , 3e and the bulging portion 3f are coated with an adhesive if necessary, and then externally fitted.
If necessary, resistance welding, MIG welding, TI
Firmly join by means such as G welding and laser welding.
Next, as in the first embodiment, the joint part 3 to which the second member 2 is attached has its claw portion 3a, as shown in FIG.
After 3a is snap-fitted into the two coupling recesses 1a, 1a of the first member 1 and temporarily coupled, 3a is firmly joined by welding if necessary.

7 (a) and 7 (b) are a perspective view and a cross-sectional view showing an example of a method of manufacturing a joint part constituting the coupling structure according to the present invention. Extruded profile 30 having a substantially rectangular cross section obtained by extrusion of aluminum or aluminum alloy
In this case, two claw portions 3a, 3a are formed at the symmetrical positions above and below the inner wall. Then, the bulged portions 3c, 3c,
3c is formed, and mounting portions 3b, 3b for connecting the second member 2 are provided. This extruded profile 30 is shown in FIG.
8 is cut in the longitudinal direction along the line AA to be divided into two, and as shown in FIG. 8, a mounting portion 3b of the second member 2 is formed in the rear center portion, and the claw portions 3a, 3a are formed at the tip of the opening. The joint component 3 having a U-shaped cross section is manufactured.

Ideally, the first member 1 and the joint part 3 are connected by snap-fitting so as to be so-called snap fit, and FIG. 9 shows an example of the connection. The upper and lower claws 3a and 3a 'of the joint component 3 are fitted and joined to the engaging recesses 1a and 1a' of the first member 1 by utilizing its elasticity. The coupling procedure is as follows. First, the claw portion 3a is fitted into the engagement concave portion 1a, the joint component 3 is rotated around the claw portion 3a, and the engagement concave portion 1a is rotated.
The claw portion 3a 'is fitted and coupled to a'.

FIG. 10 shows an example in which the first member 1 is connected to the second member 2 in a Y-shape via the joint part 3 when the first member 1 is bent with a radius of curvature in the longitudinal direction. Is. Further, FIG. 11 is an example in which the connecting direction of the second member is different from that in FIG. 10, and the same reference numerals as those in the above-described examples are given and the description thereof is omitted. In each of the above-mentioned examples, the second member 2 and the joint component 3 were first connected, and then the joint component 3 was joined to the first member 1.
The joint component 3 may be joined first. In the case of a car, for example, this is a problem that should be appropriately determined depending on the assembly procedure and overall structure. Further, in each of the above-mentioned examples, in addition to the snap-type connection or the mechanical connection between the first member 1 and the second member 2 and the joint component 3, the connection by the adhesive or the welding means is also used. The need for welding or welding should be determined by the bond strength and structure required.

In each of the above embodiments, the case where the first member 1 and the joint component 3 each have two joints is shown, but the number of the joints may be increased if necessary. The coupling concave portion and the coupling convex portion may be formed in reverse. Further, the case where the first member 1 and the second member 2 are the roof pillar and the center pillar in the frame structure of the automobile body has been described, but the first member is, for example, a side sill, and the second member is a front roof rail or a rear roof rail. , As long as it is a part that can be joined to the abutting state via the joint part 3, it is applied to any part. Further, it is of course also used for a T-shaped or Y-shaped coupled structure of a frame in machines, buildings, etc. other than automobiles.

[0015]

According to the present invention having the above-mentioned structure, the joint portion formed on the first member and the joint portion formed on the joint part to which the second member is attached are snap-fitted in a so-called snap manner. Since they are configured to be coupled as described above, positioning is easy, temporary joining is not required, and the number of working steps can be greatly reduced as compared with the related art.

[Brief description of drawings]

1A and 1B are a perspective view and a partial cross-sectional view of a T-shaped coupling structure shown in a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of each part of FIG.

FIG. 3 is a perspective view of a T-shaped coupling structure according to a second embodiment of the present invention.

FIG. 4 is an exploded perspective view of each part of FIG.

FIG. 5 is a perspective view of a T-shaped coupling structure according to a third embodiment of the present invention.

FIG. 6 is an exploded perspective view of each part of FIG.

7 (a) and 7 (b) are a perspective view and a cross-sectional view showing an example of a method of manufacturing a joint part that constitutes a coupling structure according to the present invention.

FIG. 8 is a perspective view of a joint part according to the present invention.

FIG. 9 is a side view showing an example of the coupling structure of the present invention.

FIG. 10 is a side view showing another example of the coupling structure of the present invention.

FIG. 11 is a side view showing still another example of the coupling structure of the present invention.

FIG. 12 is an exploded perspective view showing an example of a coupling structure in a frame structure of a conventional automobile body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... 1st member 1a ... Combining concave part 2 ... 2nd member 2a ... Fin 3 ... Joint part 3a ... Combining convex part 3b ... Attachment part 3c ... Swelling part 3d ... Flat part 3e ... Hook-like part 3f ... Swelling part 30 ... Extruded profile

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location B62D 21/02 A 25/00 7615-3D 24/00 (72) Inventor Mitsuteru Sugawara Wako City, Saitama Prefecture Chuo 1-4-1 Chuo Honda R & D Co., Ltd. (72) Inventor Masakazu Sato Chuo 1-4-1, Chuo Wako Saikai Co., Ltd. Honda R & D Co., Ltd. (72) Inventor Mitsuo Tsuge, Anbara-gun, Shizuoka Prefecture 1-34-1, Kambara, Kambara-cho Nichiru Giken Co., Ltd. (72) Inventor, Jindo Hino 1-34-1, Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture (72) Keiichi Sugiyama, Tokyo 3-13-12 Mita, Minato-ku, Japan Nippon Light Metal Co., Ltd. (72) Inventor Shigeru Kawamura 1-34-1, Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture

Claims (5)

[Claims] 1. A connecting structure for connecting a second member to a first member in a T-shaped or Y-shaped abutting state via a joint part, wherein at least two connecting portions are formed in the first member. In addition, the joint part is provided with at least two connecting portions that engage with the connecting portion of the first member, and a mounting portion for the second member is formed in a T-shape / Y.
Glyph-shaped connection structure. 2. The T-shaped / Y-shaped connecting structure according to claim 1, wherein the first member and the joint part are joined together at their connecting portions and are firmly joined together by an adhesive or welding. . 3. The first member, the joint component and the second member are frame materials for automobiles, the first member is a roof pillar, and the second member is a center pillar, a front roof rail or a rear roof rail. Alternatively, the T-shaped / Y-shaped coupled structure according to claim 2. 4. The T-shaped / Y-shaped coupled structure according to claim 1, wherein the first member and the second member are formed of extruded shape members. 5. The T-shaped / Y-shaped connection structure according to claim 1, 2, 3 or 4, wherein the joint part is formed by die casting.