JP3273853B2 - Joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure which can be used for various structures such as an automobile space frame and a marine structure.

[0002]

2. Description of the Related Art In general, members are connected by using a joint member having a plurality of connecting openings into which the ends of the members are fitted, and the ends of the members are connected to the respective connecting openings of the joint member. It was performed by inserting and fitting. As a joint member having such a connection opening, a cast product or a forged product has been conventionally used.

[0003]

However, in the case of a joint member made of a cast product or a forged product, there is a problem that the manufacture of the joint member is generally extremely difficult due to technical difficulties in the mold manufacturing surface and the like. there were. In particular, as the number of members to be connected increases, the number of connection openings of the joint member also increases, and it has become more difficult to manufacture the joint member.

[0004] In addition, castings and forgings have a problem that they are not suitable for mass production and the unit cost of the joint member becomes extremely high.

Furthermore, especially in the case of a joint member made of a cast product,
Due to the manufacturing technology, there is also a problem that the weight becomes considerably large.

The present invention has been made in view of the above-mentioned conventional problems, and has been made using a joint member which is easy to manufacture, can be mass-produced, can be reduced in cost, and can be made lightweight. The purpose is to provide a structure.

[0007]

In order to achieve the above object, a first aspect is provided.
The invention is provided with a joint member for connecting the members, the joint member comprises a cut product of an extruded aluminum material having at least one hollow portion, and at least one connecting hollow opening of the cut product, The opening is inclined with respect to a plane perpendicular to the extrusion axis direction, and the end of the member is inserted and fitted into the inclined opening in a direction intersecting the extrusion direction of the joint member, and the joint member is The gist of the present invention is a joint structure in which an end of another member is inserted and fitted into another connection hollow portion opening in a direction in which the joint member is pushed out.

According to a second aspect of the present invention, there is provided a joint member for connecting members, the joint member comprising a cut product of an extruded aluminum material having at least one hollow portion,
At least one connecting hollow opening of the cut product is opened at an angle of 45 ° with respect to a plane perpendicular to the extrusion axis direction, and the end of the member is orthogonal to the extrusion direction of the joint member at the inclined opening. And the end of the other member is inserted and fitted into the other connecting hollow opening of the joint member in the pushing direction of the joint member. The outline of the joint structure is as follows.

In this case, the hollow portion of the joint member is preferably formed by extrusion molding into a square cross section.

In a third aspect of the present invention, a plurality of joint members for connecting members are provided, each of the joint members comprising a cut product of an extruded aluminum material having at least two hollow portions. At least one connecting hollow opening is opened at an angle of 45 ° with respect to a plane orthogonal to the extrusion axis direction, and at the inclined opening of each joint member, the end of the member is in the pushing direction of the joint member. The joint structure is characterized in that the joint structure is inserted and fitted in a direction orthogonal to the direction, and is inserted and fitted in a mode in which the ends of the other members straddle the hollow portions of the plurality of joint members. Make a summary.

[0011]

In the joint structure according to the first aspect of the present invention, the joint member is made of a cut aluminum extruded member having at least one hollow portion, and at least one connecting hollow opening of the cut aluminum member has an extrusion axis. Since the joint member is opened by being inclined with respect to a plane orthogonal to the direction, the joint member is manufactured by performing a cutting process on a long extruded hollow extruded material having a predetermined cross-sectional shape. The joint member can be manufactured very easily, mass-produced, cost-effectively, and lightweight.

In the joint structure according to the second aspect of the present invention, the joint member comprises a cut product of an extruded aluminum material having at least one hollow portion, and at least one connecting hollow opening of the cut product is formed by extrusion. An opening is formed at an angle of 45 ° with respect to a plane perpendicular to the axial direction, and the end of the member is inserted and fitted into the inclined opening in a direction perpendicular to the pushing direction of the joint member. Since the end of the other member is inserted and fitted into the other connection hollow portion opening in the pushing direction of the joint member, members having the same cross-sectional shape and cross-sectional size are used. Therefore, even when these members are inserted and fitted into the respective connection openings from directions orthogonal to each other, the respective members are inserted and fitted into the respective connection openings in a suitable state.

In the joint structure of the third invention, a plurality of joint members for connecting the members are provided, each of the joint members being a cut product of an extruded aluminum material having at least two hollow portions, At least one connecting hollow opening of each cut product is opened at an angle of 45 ° with respect to a plane orthogonal to the extrusion axis direction, and at the inclined opening of each joint member, the end of the member is a joint member. While being inserted and fitted in a direction perpendicular to the extrusion direction, the end of the other member is inserted and fitted in a manner of straddling the hollow portion of the plurality of joint members, With a very simple structure, a multi-way joint structure in which more members are connected in more directions is realized.

[0014]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 to 4 show a joint structure according to a first embodiment.

In FIGS. 1 and 2, (1) is a joint member, and (3), (4) and (5) are first to third members connected by the joint member (1).

Each of the members (3), (4), (5) to be connected is a bar-shaped member having the same square cross section and the same cross section size. Although there is no particular limitation on the material, for example, a metal such as aluminum, and other materials such as wood and resin may be used.

On the other hand, the joint member (1) is a cut product of an extruded aluminum material.

The joint member (1) has a first and second two hollow portions (7) having a cross-sectional shape of a letter "".
(8). As shown in FIG. 3, each of the hollow portions (7) and (8) has a square cross section, the cross section size is equal to each other, and further, the connecting member (3)
(4) The cross-sectional shape and size are designed to conform to the cross-sectional shape and size of (5).

Then, the first and second portions of the first hollow portion (7)
The two openings (7a) and (7b) at both ends are inclined in parallel in the same direction at 45 ° with respect to a plane perpendicular to the extrusion direction. The two openings (8a) (8b) at the first and second ends of the second hollow portion (8) are opened orthogonal to the extrusion direction.

As shown in FIG. 4 (a), the joint member (1) first has an extruded mold member (10) having a cross-section of the shape of a "sun".
Is extruded, and then the extruded member (10) is manufactured by cutting the shape of the joint member (1) as a unit, for example, as shown in FIG.

The joint member (1) includes each member (3) (4)
(5) is connected in the following manner, for example, to form a joint structure.

That is, as shown in FIG. 1 and FIG. 2, the first member (3) is oriented in the pushing direction of the joint member (1), and the end thereof is the second end of the joint member (1). 2 Inserted and fitted into the first opening (8a) of the hollow portion (8), and is firmly connected to the joint member (1) by connecting means (9) such as screws and rivets. Then, the second member (4) is oriented in a direction orthogonal to the extrusion direction of the joint member (1), and its end is formed by the first inclined portion of the first hollow portion (7) of the joint member (1). It is inserted and fitted into the opening (7a) and is also connected to the joint member (1) by connecting means (9) such as screws and rivets. Since the first inclined opening (7a) of the first hollow portion (7) of the joint member (1) is opened at an angle of 45 ° with respect to the extrusion direction, the direction orthogonal to the extrusion direction as described above. The end of the second member (4) to be inserted from above is in an insertion arrangement state suitable for the inclined opening (7a). Also,
The end of the third member (5) is in the second inclined opening (7b) of the first hollow portion (7) of the joint member (1) in a state where the third member (5) is oriented in the pushing direction of the joint member (1). And is coupled to the joint member (1) by coupling means (9) such as screws and rivets. In this manner, the first to third members (3) and (4) centering on the joint member (1)
A joint structure in which (5) is extended in three directions is formed.
Instead of using the connecting means (9) such as a screw or a rivet, they may be connected by press fitting or the like.

As described above, the joint member (1) is made of a cut product of the above-described extruded aluminum member as the joint member.
Since the joint structure is formed by using the joint member, the joint member forming the joint structure can be manufactured very easily, mass-produced, low-cost, and lightweight.

Furthermore, the provision of the inclined opening (7a) allows the member (4) to be extended and connected in a direction at a predetermined angle to the pushing direction of the joint member (1). In the case of this embodiment, in particular, the inclination of the inclined opening (7a) of the joint member (1) is inclined by 45 ° with respect to the extrusion direction, and the end of the member (4) is inserted into the inclined opening (7a). Since the portion is inserted and fitted in a direction perpendicular to the extrusion direction, the member (4) is inserted and fitted into the opening of the hollow portion in a direction parallel to the extrusion direction as the member (4). The same cross-sectional shape and size as (5) can be used, and the members (3), (4), and (5) to be connected can have the same cross-sectional shape and size.

The hollow part (7) of the joint member (1)
(8) is formed in a square cross section, and the inclined opening (7
Since the opening of (a) is inclined at 45 °, the end of the second member (4) inserted into the inclined opening (7a) from a direction orthogonal to the extrusion direction is connected to the inclined opening (7a). It is not necessary to work to conform to the inner shape of (1), it can be used as it is, and the joint structure can be realized at a cost advantage on a processing surface or the like.

Further, since the joint member (1) is provided with the two hollow portions (7) and (8), a joint structure of more than two sides and three or more sides can be realized. In addition,
There may be three, four, or even more hollows.

The second embodiment shown in FIGS. 5 and 6 has the same structure as the first embodiment.
And two joint members (1) and (2)
And a four-way joint structure formed using the fourth to fourth members (3), (4), (5), and (6).

That is, the second joint member (2) is turned sideways with the pushing direction coincident with the first joint member (1), and the second hollow portion (8) of the first joint member (1) is formed. The second opening (8b) of the second joint member (2) is combined with the second opening (8b) of the second hollow portion (8) of the second joint member (2). Then, the first member (3) is oriented in the pushing direction of the first joint member (1), and the end thereof is connected to the first hollow part (8) of the first joint member (1). The second joint member (2) is inserted into the opening (8a), and further the second hollow portion (8) of the second joint member (2) is inserted.
And the first and second joint members (1) are connected by connecting means (9) such as screws and rivets.
(2). And the second member (4)
The end of the first joint member (1) is in the first inclined opening (7a) of the first hollow portion (7) of the first joint member (1) in a state of being oriented in a direction orthogonal to the pushing direction. And is connected to the first joint member (1) by connecting means (9) such as screws and rivets. Further, the third member (5) is oriented in the pushing direction of the first joint member (1), and the end thereof has the second inclined portion of the first hollow portion (7) of the first joint member (1). It is inserted into the opening (7b) and is also connected to the first joint member (1) by connecting means (9) such as screws and rivets. Then, in a state where the fourth member (6) is oriented in a direction orthogonal to the pushing direction of the second joint member (2),
The end is inserted into the first inclined opening (7a) of the first hollow portion (7) of the second joint member (2), and the second joint member ( 2).

As described above, by using the first and second two joint members (1) and (2) as described above, members (3), (4), (5) and (6) can be provided in more directions. ) Can be realized.

In particular, since the joint members (1) and (2) have a joint structure using the same structures as described above, the joint members (1) and (2) are manufactured as the same standard product. As a result, the above-described multi-way joint structure can be advantageously realized in terms of manufacturing, cost, and the like.

The third embodiment shown in FIGS. 7 and 8 has a first joint member (1) having the same structure as the joint member (1) in the first embodiment, and the first joint member (1) has the same structure. First
Using the second joint member (11) having a structure in which the second opening (7b) of the hollow portion (7) is opened perpendicular to the extrusion direction, a four-way joint structure similar to that of the second embodiment is formed. It is formed. Thus, the first joint member (1) and the second joint member (1
1) may have different structures from each other.

In the second and third embodiments, two joint members are used. However, the number of joint members to be used is not limited, and three or four joint members may be used. A joint structure may be formed by combining a number of joint members.

For example, when three joint members are used, even if the end of one member is inserted and fitted so as to straddle all the hollow portions of these three joint members. Alternatively, one member is inserted and fitted so as to straddle two hollow portions of the three joint members, and the other member is strung so as to straddle the hollow portions of one joint member and the remaining joint members. A joint structure in which the joint members are combined such that the end of one member is inserted and fitted. The same applies to the case where four or five joint members are used.

The joint member (12) according to the fourth embodiment shown in FIG. 9 has one hollow portion (13) having a square cross section.
And opening portions (13a) (13b) at both ends of the hollow portion (13)
Are opened at 45 ° in parallel with each other with respect to the extrusion direction. And the cross-sectional shape is the same square shape, the cross-sectional size is designed to be the same, and the cross-sectional shape and size conform to the cross-sectional shape and size of the hollow part (13) of the joint member (12). The designed first and second two members (3) and (4) are connected by the joint member (12) to form a joint structure.

That is, the first member (3) is a joint member (12)
The end of the joint is inserted into the first inclined opening (13a) of the hollow portion (13) of the joint member (12) in a state where the end is oriented in a direction perpendicular to the pushing direction of It is connected to the joint member (12) by means (9). Further, the second member (4) is oriented in the pushing direction of the joint member (12), and the end of the second member (4) is connected to the hollow portion (13) of the joint member (12).
And is coupled to the joint member (12) by coupling means (9) such as screws and rivets. As described above, a joint structure in which the first and second members (3) and (4) are extended in two directions around the joint member (12) is formed.

Furthermore, the joint member (15) according to the fifth embodiment shown in FIG.
And a cut product of an extruded aluminum material having a second two hollow portions (16) and (17). And each hollow part (16)
(17) is formed so as to have a circular cross section and to make the cross section sizes equal to each other. And
The two openings (16a) and (16b) of the first and second ends of the first hollow portion (16) are formed with respect to a plane orthogonal to the extrusion direction.
The openings are inclined at an angle of 5 ° in parallel in the same direction. Also,
The two openings (17a) and (17b) at the first and second ends of the second hollow portion (17) are opened orthogonal to the extrusion direction.

First to third three members (18) to be connected
(19) and (20) have the same circular cross-sectional shape as each other and are designed to have the same cross-sectional size as each other, and the hollow portions (16) and (17) of the joint member (15), respectively.
The cross-sectional shape and size are designed to fit the cross-sectional shape and size.

Also in this embodiment, as shown in FIG. 10, in the three-way joint mode similar to the first embodiment,
The first to third members (18), (19), (20) are connected and connected to the joint member (15). The insertion end of the second member (19) inserted from a direction perpendicular to the extrusion direction is processed into a shape corresponding to the inner shape of the corresponding inclined opening (16a).

The joint member (23) according to the sixth embodiment shown in FIG. 11 is an aluminum member formed by extruding two first and second hollow portions (24, 25) having a circular cross section. Depends on the extruded material cut. The first openings (24a) and (25a) of the first and second hollow portions (24) and (25) are inclined at a predetermined same angle with respect to a plane orthogonal to the extrusion direction (the inclination angle is 45 °). (Not limited to). Further, each second opening (24b) of the first and second hollow portions (24) and (25).
(25b) is opened perpendicular to the extrusion direction. Further, a circular hole (26) is formed on the side surface of the joint member (23) in the direction perpendicular to the extrusion direction by drilling, located between the first and second hollow portions (24) and (25). ing.

The first to the first connected by the joint member (23)
Of the fifth five members (27), (28), (29), (30), and (31), the third to fifth members (29), (30), and (31) correspond to the joint member (23), respectively. The hollow sections (24) and (25) and the circular hole (26) have a horizontal cross-sectional shape in the cross-sectional shape and size, and the first and second members (27) and (28) have a hollow section (24). The cross-sectional shape (ie, elliptical shape) corresponding to the circumferential shape and size of each inclined opening (24a) (25a) in (25).
It is formed to have a size. The ends (27a) and (28a) of the first and second members (27) and (28) inserted into the inclined openings (24a) and (25a) enter the inclined openings (24a) and (25a). Is processed into a predetermined shape for insertion.

The ends (27a) and (28a) of the first and second members (27) and (28) are respectively connected to the first member (23) of the joint member (23).
And the inclined opening (24a) of the second hollow portion (24) (25)
(25a) is inserted vertically into the opening surface, and the third to fifth members (29), (30), (31) are respectively provided in the first and second hollow portions (24), (25). The second openings (24b) and (25b) and the circular hole (26) are inserted perpendicularly to the respective opening surfaces, thereby forming a five-way joint structure. As described above, as the joint member, a member having a connection opening (26) formed by a perforation process in addition to the hollow portions (24) (25) formed by an extrusion process may be used. Further, by making the cross-sectional shapes and sizes of the members to be connected different from each other, it is possible to insert and fit the members into the openings in a desired inclination angle state to form a joint structure.

[0043]

As described above, the joint structure of the first invention has the following features.
The joint member is made of a cut aluminum extruded material having at least one hollow portion, and at least one connecting hollow opening of the cut product is formed to be inclined with respect to a plane orthogonal to the extrusion axis direction. Therefore, the joint member is manufactured by cutting an extruded long hollow extruded material having a predetermined cross-sectional shape, and the joint member is extremely easily and mass-produced. Cost advantage,
Moreover, it can be manufactured lightweight.

Further, since at least one of the connecting hollow openings is formed so as to be inclined with respect to a plane perpendicular to the direction of the extrusion axis, it is needless to say that the inclined opening has In a mode in which the end portions of the members can be inserted and fitted without difficulty in a state where the end portions are oriented in a direction different from the pushing direction of the joint member, and the members are arranged in a state where their axes are arranged other than on the same axis. Appropriate coupling can form a joint structure.

Further, in the joint structure of the second invention, the joint member comprises a cut product of an extruded aluminum material having at least one hollow portion, and at least one connecting hollow opening of the cut product is formed by extrusion. An opening is formed at an angle of 45 ° with respect to a plane perpendicular to the axial direction, and the end of the member is inserted and fitted into the inclined opening in a direction perpendicular to the pushing direction of the joint member. Since the end of the other member is inserted and fitted into the other connecting hollow portion opening in the pushing direction of the joint member, the same cross-sectional shape as each other,
Even if these members are inserted and fitted into the respective connection openings from directions orthogonal to each other using members having a cross-sectional size,
Each member is inserted and fitted into each connection opening in a suitable state, and the joint structure can be formed using members having the same cross-sectional shape and size as each other.

The joint structure according to the third aspect of the present invention is provided with a plurality of joint members for connecting the members, each of the joint members comprising a cut aluminum extruded material having at least two hollow portions, At least one connecting hollow opening of each cut product is opened at an angle of 45 ° with respect to a plane orthogonal to the extrusion axis direction, and at the inclined opening of each joint member, the end of the member is a joint member. Since it is inserted and fitted in a direction orthogonal to the extrusion direction and the end of the other member is inserted and fitted in a manner of straddling the hollow portion of the plurality of joint members, With a simple structure, a multi-way joint structure in which more members are connected in more directions can be easily realized.

[Brief description of the drawings]

1A and 1B show a joint structure according to a first embodiment, wherein FIG. 1A is a perspective view in a connected state, and FIG. 1B is an exploded perspective view showing a member and a joint member in a separated state.

FIG. 2 is a side view of the joint structure according to the embodiment.

3A and 3B show a joint member according to the embodiment, wherein FIG. 3A is a front view, FIG. 3B is a side view, and FIG. 3C is a plan view.

4A and 4B show a method of manufacturing the joint member according to the embodiment, wherein FIG. 4A is a perspective view of the extruded material, and FIG. 4B is a perspective view of the extruded material showing a cutting step.

FIG. 5 is a perspective view showing a joint structure according to a second embodiment.

FIG. 6 is an exploded perspective view of the joint structure according to the embodiment.

FIG. 7 is a perspective view showing a joint structure according to a third embodiment.

FIG. 8 is an exploded perspective view of the joint structure according to the embodiment.

9A and 9B show a joint structure according to a fourth embodiment. FIG. 9A is a perspective view in a connected state, and FIG. 9B is an exploded perspective view showing a member and a joint member in a separated state.

FIG. 10 shows a joint structure according to a fifth embodiment.
FIG. 2A is an exploded perspective view showing the member and the coupling member in a separated state, and FIG. 2B is a sectional view in a connected state.

FIG. 11 shows a joint structure according to a sixth embodiment.
FIG. (A) is a perspective view in the connected state, FIG. (B) is a cross-sectional view of the joint member in the connected state, and FIG.
FIG. 2D is a cross-sectional view taken along line II-II of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Joint member 3, 4, 5 ... 1st thru | or 3rd member 7, 8 ... Hollow part 7a, 7b ... Slant opening part

Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16B ^7/ 00-7/22 B21D 51/16

Claims (3)

(57) [Claims] 1. A joint member for connecting members, wherein the joint member is made of a cut aluminum extruded member having at least one hollow portion, and at least one connecting hollow opening of the cut product is provided. Is opened by being inclined with respect to a plane perpendicular to the extrusion axis direction, and the end of the member is inserted and fitted into the inclined opening in a direction intersecting with the extrusion direction of the joint member. A joint structure wherein an end of another member is inserted and fitted into another opening of the connecting hollow portion of the member in a direction in which the joint member is pushed out. 2. A joint member for connecting members, wherein the joint member is made of a cut aluminum extruded member having at least one hollow portion, and at least one connecting hollow opening of the cut product is provided. Is opened at an angle of 45 ° with respect to a plane perpendicular to the direction of the extrusion axis, and the end of the member is inserted and fitted into the inclined opening in a direction perpendicular to the direction of extrusion of the joint member. A joint structure, wherein an end of another member is inserted and fitted into another opening of the coupling hollow portion of the joint member in a direction in which the joint member is pushed out. 3. A plurality of joint members for connecting members are provided, each of the joint members comprising a cut product of an extruded aluminum material having at least two hollow portions, and at least one of each cut product. The connecting hollow opening is opened at an angle of 45 ° with respect to a plane orthogonal to the extrusion axis direction, and the end of the member is directed to the inclined opening of each joint member in a direction orthogonal to the extrusion direction of the joint member. And a fitting structure wherein the end portions of the other members are inserted and fitted so as to straddle the hollow portions of the plurality of fitting members.