JP2010125924A - Joint member of pipe material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint member, relating to the joint members of pipe materials, that copes with a change in pipe diameter with the use of one joint member, without changing to another joint member with a different specification, and allows for free layout of pipe material. <P>SOLUTION: In the joint member of pipe material according to claim 1, the connection section to the pipe material is formed in a spherical outer shape. According to claim 2, in the joint member as described in claim 1, the pipe material is a mirror arm attached to the front section of a cab via the joint member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pipe member connecting member, for example, an improvement of a connecting member used when connecting a mirror arm made of a pipe member to a cab of a cab over type truck.

  As disclosed in Patent Document 1, conventionally, in a cab-over type truck or the like, in order to visually confirm the lower side or the rear side of the vehicle, a front side mirror on the front passenger seat side of the cab or a lower side confirmation A mirror, a mirror for confirming the lower side surface, and the like are attached via a mirror arm.

  As shown in FIG. 5, the mirror arm 1 is formed in a substantially U-shape in a side view using a metal pipe material in order to reduce the weight. , A rear-viewing mirror, and a side-bottom-viewing mirror are attached to the tip of a stay 3 connected to the mirror arm 1, respectively.

  The upper end of the mirror arm 1 is connected to the cab via a cast connecting member 5, and the cab accommodates a motor capable of rotating in the forward and reverse directions and a rotation driving member driven by the motor. A base (housing) is mounted, and the pivot shaft of the rotational drive member is coupled to the shaft mounting hole 7 of the coupling member 5 via a mirror bracket (not shown).

  As shown in FIGS. 6 and 7, the connecting member 5 is welded to the ring-shaped shaft connecting portion 9 in which the shaft mounting hole 7 is formed on the cab side and the upper end of the mirror arm 1 made of pipe material on the mirror arm side. The pipe weld 11 is formed in a cylindrical shape having an outer diameter b that matches the inner diameter a of the mirror arm 1.

  On the other hand, the lower end of the mirror arm 1 is connected to the cab via a connecting member 13 integrated with a ball joint (not shown), and the lower connecting member 13 similarly matches the inner diameter of the mirror arm 1. A cylindrical pipe weld having an outer diameter is provided.

The mirror arm 1 is attached to the cab via the connecting member 5 by inserting the upper end and the lower end of the mirror arm 1 into the pipe welds 11 of the connecting members 5 and 13 and welding them. The mirror arm 1 is deployed so as to protrude forward of the cab by the motor when the vehicle is traveling, and can be stored by being rotated to the cab side by the motor when the vehicle is stopped.
Japanese Patent No. 3842754

  Thus, conventionally, the upper end of the mirror arm 1 is attached to the front portion of the cab via the connecting member 5, but as described above, the pipe welded portion 11 matches the inner diameter a of the mirror arm 1. Since the pipe diameter of the mirror arm 1 is determined to be thicker or thinner because the outer diameter b is determined, a connecting member having a pipe welding portion that matches the inner diameter of the mirror arm 1 is prepared separately. And had to change.

  In addition, since the mounting direction of the mirror arm 1 is determined by the shape of the pipe welded portion 11 formed in a cylindrical shape, there is a restriction on the layout of the mirror arm, and the actual situation is that the pipe layout is not flexible.

  And the same malfunction is pointed out also in the connection member which connects the lower end of the mirror arm 1 to a cab.

  The present invention has been devised in view of such circumstances, and it is possible to change the pipe diameter with one connecting member without modifying the connecting member of the pipe material as described above and changing to another connecting member having different specifications. It is an object of the present invention to provide a pipe member connecting member that can cope with the above and enables a free layout of the pipe member.

  In order to achieve such an object, the pipe material connecting member according to claim 1 is characterized in that a welded portion with the pipe material is formed in a spherical outer shape.

  The invention according to claim 2 is the pipe member connecting member according to claim 1, wherein the pipe member is a mirror arm that is attached to the front portion of the cab via the connecting member. .

  According to the first aspect of the present invention, since the tip of the pipe material can be welded to the outer periphery of the pipe welded part from any direction by using a connecting member in which the pipe welded part is formed in a spherical shape, compared to the conventional case. The degree of freedom in pipe layout has been dramatically improved, and the degree of freedom in pipe diameter has been dramatically improved.

  According to the second aspect of the present invention, since the mirror arm with various pipe layouts can be mounted on the vehicle by using the connecting member for mounting the mirror arm, the mirror for confirming the lower side and the mirror for confirming the rear side , It is possible to suppress the amount of projection of the mirror arm toward the front of the vehicle while ensuring good visibility of the mirror for confirming the lower side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show a connecting member according to the first embodiment of claims 1 and 2, and in this embodiment, like the connecting member 5 of FIGS. 5 to 7, the upper end of the mirror arm 1 is used as a cab. The present invention is applied to a connecting member to be connected. As shown in the drawing, the connecting member 13 according to this embodiment is formed on the pipe weld 11 of the connecting member 5 formed in a cylindrical shape according to the inner diameter of the mirror arm 1. Instead, the pipe welded portion 15 is formed in a hemispherical shape.

  In addition, since the other structure is the same as that of the said connection member 5, the same code | symbol is attached | subjected to the same thing and those description is abbreviate | omitted.

  As described above, the connecting member 13 according to the present embodiment has the pipe welded portion 15 formed in a hemispherical shape. Therefore, as shown in FIG. 1, for example, the pipe layout is changed in the left-right direction as compared with the conventional example of FIG. The tip of the perfect mirror arm 1-1 formed by the step can be brought into contact with the outer periphery of the pipe welded portion 15 to weld the entire circumference thereof. Further, as shown in FIG. The pipe layout can be changed in the vertical direction, and the tip of the perfect mirror arm 1-2 made of pipe material can be brought into contact with the outer periphery of the pipe welded portion 15 so that it can be welded in all directions. Thus, the tips of the mirror arms 1, 1-1 and 1-2 can be brought into contact with the outer periphery of the pipe welded portion 15 and welded.

  Further, as described above, the connecting member 5 in FIG. 5 has a pipe welded portion 11 formed in a cylindrical shape having an outer diameter b that matches the inner diameter a of the mirror arm 1 and the adaptive pipe diameter is determined. When the pipe diameter of the mirror arm 1 is made thicker or thinner, it is necessary to change to another connecting member having a pipe welded part that matches the inner diameter of the mirror arm 1, but as described above, the pipe welded part 3 is formed in a hemispherical shape, so that the tip of the mirror arm 1-3 having a pipe diameter smaller than that of the mirror arm 1 as shown in FIG. Further, as in FIGS. 1 and 2, the pipe layout of the mirror arm 1-3 itself can be freely adjusted.

  Thus, by using the connecting member 13 of the present embodiment in which the pipe welded portion 15 is formed in a hemispherical shape, the ends of the mirror arms 1, 1-1, 1-2, 1-3 are connected to the pipe welded portion 15 from all directions. As compared with the prior art, the degree of freedom in pipe layout of the mirror arm is dramatically improved, and the degree of freedom in pipe diameter is greatly improved without changing the connecting member 13. It became a thing.

  In addition, since it is not necessary to create a connecting member having different specifications for each pipe diameter in this way, it is possible to reduce the mold cost when casting the connecting member.

  Then, by using the connecting member 13 for attaching the mirror arms 1, 1-1, 1-2, 1-3, the mirror arms with various pipe layouts can be mounted on the cab-over type truck. It is possible to suppress the protrusion amount of the mirror arm to the front of the vehicle while ensuring good visibility of the mirror, the mirror for confirming the rear side, and the mirror for confirming the lower side surface.

  In the above embodiment, the present invention is applied to the connecting member that connects the upper end of the mirror arm to the cab, but the present invention is also applied to a connecting member that is integrated with the ball joint and connects the lower end of the mirror arm to the cab. Is possible.

  That is, as already described with reference to FIG. 5, the connecting member 13 that connects the lower end of the mirror arm to the cab has also been provided with a cylindrical pipe weld having an outer diameter that matches the inner diameter of the mirror arm. By forming the pipe welded portion of the lower connecting member together with the connecting member 13 in a hemispherical shape, the pipe layout of the mirror arm can be greatly changed, and the degree of freedom of the pipe diameter can be further improved. Is possible.

  On the other hand, in the medium-sized cab-over type truck, contrary to the above-described embodiment, the connecting member is used on the lower end side of the mirror arm and a motor capable of rotating in the forward / reverse direction is mounted on the cab side, and the ball on the upper end side of the mirror arm. Although a structure using a connecting member integrated with a joint is employed, the present invention can also be applied to a connecting member of such a cab over type truck.

  FIG. 4 shows a connecting member according to the second embodiment of claims 1 and 2, and the connecting member 17 according to this embodiment has a pipe welded portion 19 having a so-called 3/4 spherical shape, and other configurations. Is the same as the connecting member 13.

  Thus, by making the pipe welded portion 19 into a 3/4 spherical shape like the connecting member 17 of the present embodiment, the mirror arm 1, 1-1, The mirror arm 1-4 having a larger diameter than that of 1-2, 1-3 can be used, and the pipe layout of the mirror arm 1-4 can be greatly changed as in the above embodiment. .

  In each of the above embodiments, the invention of claim 1 is applied to a connecting member that connects a mirror arm formed of a pipe material to a cab of a cab over type track. However, the present invention can be applied to any connecting member used when connecting pipe materials.

It is a top view of the connection member which concerns on 1st embodiment of Claim 1 and Claim 2. It is a side view of a connection member. It is a side view of a connection member. It is a side view of the connection member which concerns on 2nd embodiment of Claim 1 and Claim 2. It is a whole perspective view of a mirror arm and the conventional connection member. It is a top view of the conventional connection member. It is a side view of a connection member.

Explanation of symbols

1, 1-1, 1-2, 1-3, 1-4 Mirror arm 7 Shaft mounting hole 9 Shaft connecting portion 13, 17 Connecting member 15, 19 Pipe welded portion

Claims (2)

  A pipe material connecting member, wherein a welded portion with a pipe material is formed in a spherical outer shape. The pipe material connection member according to claim 1, wherein the pipe material is a mirror arm that is attached to a front portion of a cab via a connection member.

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