JP5626007B2 - Intermediate beam positioning device - Google Patents

Description

  The present invention relates to an intermediate beam positioning device for positioning an intermediate beam assembly.

Conventionally, with respect to the intermediate beam assembly (for example, described in Patent Document 1), the positioning is provided in the intermediate beam assembly as shown in FIGS. 6 (a) and 6 (b), for example. After the pair of reference pins 110 are arranged between the pair of tube portions 100 arranged in the same manner, each reference pin 110 is moved to the outside (the side where each reference pin 110 is separated), and each reference pin 110 is moved. This is done by inserting the tube portions 100 of the intermediate beam assembly.
The reference pin 110 is a seated pin, and the portion of the reference pin 110 that is inserted into the tube portion 100 is formed in a cylindrical shape that is slightly smaller in diameter than the inner diameter dimension of the tube portion 100.

  However, when positioning a plurality of types of intermediate beam assemblies having different inner diameter dimensions of the tube portion 100 and different inclination angles of the tube portion 100, the shape (diameter dimension) of the reference pin 110, the inclination angle of the reference pin 110, and the reference pin The moving direction of 110 has to be changed in accordance with the type of intermediate beam assembly for positioning (see FIGS. 6A and 6B).

JP 2001-39136 A

  The present invention enables positioning of a plurality of types of intermediate beam assemblies having different tube inner diameter dimensions and tube portion tilt angles without changing the shape of the reference pin, the tilt angle of the reference pin, and the moving direction of the reference pin. An intermediate beam positioning device capable of positioning the plurality of types of intermediate beam assemblies in one type of reference pin shape, one type of reference pin tilt angle, and one type of reference pin shift direction I will provide a.

The intermediate beam positioning device according to claim 1,
A pair of trailing arms having a tube portion swingably attachable to the vehicle body and a wheel attachment portion capable of rotatably attaching a wheel;
A torsion beam having a longitudinal shape, one end of which is attached to one of the trailing arms and the other end of which is attached to the other trailing arm;
The tube portion of each trailing arm has a cylindrical shape that opens on both sides, the opening on one side thereof is disposed inside the longitudinal direction of the torsion beam, and the opening on the other side is the longitudinal direction of the torsion beam. An intermediate beam positioning device for positioning an intermediate beam assembly disposed outside,
A pair of reference pins;
A support member that supports the pair of reference pins so as to be close to and away from each other;
An actuator for approaching and separating the pair of reference pins from each other,
With the intermediate beam assembly installed so that the pair of reference pins are disposed between the pair of tube portions, the pair of reference pins are separated from each other by the actuator. The intermediate beam assembly is positioned by inserting the pair of tube portions into the pair of tube portions and holding the intermediate beam assembly by the pair of reference pins, or the pair of reference pins In a state where the intermediate beam assembly is installed so that the pair of tube portions are disposed therebetween, the pair of reference pins are brought close to each other by the actuator, and the pair of reference pins are placed in the pair of tube portions. inserting them through the opening of the other side, by grasping the intermediate beam assembly by the pair of reference pins It performs positioning of the serial intermediate beam assembly,
The pair of reference pins are contact portions that come into contact with the inserted side opening when the reference pin is inserted into the tube portion from the opening on the one side or from the opening on the other side, respectively. Have
The contact portion is formed in a spherical shape of a sphere having a diameter larger than the inner diameter of the opening to be contacted.

  The intermediate beam positioning apparatus according to the present invention has a plurality of types of intermediates in which the inner diameter dimension of the tube portion and the inclination angle of the tube portion are different without changing the shape of the reference pin, the inclination angle of the reference pin, and the moving direction of the reference pin The beam assembly can be positioned, and the multiple types of intermediate beam assemblies can be positioned in one type of reference pin shape, one type of reference pin tilt angle, and one type of reference pin shift direction. It is.

(A) is a perspective view showing an intermediate beam positioning device, an intermediate beam assembly, and a material handling jig, and (b) is a side view of FIG. It is a front view of an intermediate beam assembly. (A) is a perspective view showing an intermediate beam positioning device, an intermediate beam assembly, and a material handling jig, and (b) is an enlarged perspective view of a reference pin. (A) is a figure which shows the state which has inserted each reference | standard pin in each tube part of an intermediate beam assembly, (b) is each tube from which each inclination angle differs from each tube part shown by Fig.4 (a). It is a figure which shows the state which has inserted each reference | standard pin in the part. (A) And (b) is a figure which shows the modification of an intermediate beam positioning device. (A) And (b) is a figure which shows the state which has performed the conventional positioning.

  Hereinafter, an intermediate beam positioning device 10 which is an embodiment of an intermediate beam positioning device according to the present invention will be described with reference to the drawings.

The intermediate beam positioning device 10 is a device for positioning the intermediate beam assembly (torsion beam suspension) 20.
As shown in FIG. 1A, in this embodiment, an example of application of the intermediate beam positioning device 10 is shown, and the intermediate beam positioning device 10 is applied to the material handling jig 30. Specifically, the intermediate beam positioning device 10 is used to accurately determine the relative position of the intermediate beam assembly 20 with respect to the material handling jig 30.

The intermediate beam assembly 20 is a member for connecting a vehicle body (not shown) and wheels (left and right rear wheels) (not shown).
As shown in FIG. 2, the intermediate beam assembly 20 has a pair of trailing arms 21 and a torsion beam 22.

The pair of trailing arms 21 includes an arm portion 23, a tube portion 24, and a wheel attachment portion 25.
The arm part 23 is a member that constitutes the main structure of the trailing arm 21 and has a longitudinal shape. A tube portion 24 is attached to one end portion of the arm portion 23. The tube portion 24 has a cylindrical shape that opens on both sides, and an opening portion 24a on one side thereof is disposed on the inner side in the longitudinal direction (in the direction of the arrow X in FIG. 2) of the torsion beam 22 described later, The opening 24 b is disposed outside the torsion beam 22 in the longitudinal direction. The tube portion 24 can be swingably attached to the vehicle body via a bush. The other end of the arm portion 23 constitutes a wheel mounting portion 25. A bracket 26 for rotatably supporting the rear wheel is attached to the wheel attachment portion 25. A rear wheel can be rotatably attached to the wheel attachment portion 25 via a bracket 26. Further, a bracket 27 on which a spring and a shock absorber (not shown) can be installed is attached to the other end side of the arm portion 23.

The torsion beam 22 has a longitudinal shape. The torsion beam 22 has a cross section perpendicular to the longitudinal direction formed in, for example, a substantially U shape. One end of the pair of trailing arms 21 is attached to one end of the torsion beam 22, and the other of the pair of trailing arms 21 is attached to the other end of the torsion beam 22. Specifically, the middle part of the arm part 23 of each trailing arm 21 is attached to one end and the other end of the torsion beam 22 by welding.
The torsion beam 22 twists when the left and right rear wheels are positioned at different heights, and applies a reaction force due to twisting to each of the left and right rear wheels.

As shown in FIGS. 1A and 1B, the material handling jig 30 is a member for holding the intermediate beam assembly 20 when the intermediate beam assembly 20 is conveyed by a material handling robot or the like.
The material handling jig 30 has a pair of arm receivers 31 and a beam clamp 32.
The pair of arm receivers 31 are arranged with an interval corresponding to the interval dimension between the arm portions 23 of each trailing arm 21, and are configured to be able to contact each arm portion 23. The beam clamp 32 is disposed between the arm receivers 31. The beam clamp 32 is configured to be able to approach and separate from the side opposite to the arm receiver 31 with respect to the torsion beam 22 in a state where each arm portion 23 is in contact with each arm receiver 31. The material handling jig 30 holds the intermediate beam assembly 20 by pressing the intermediate beam assembly 20 toward the arm receiver 31 with the beam clamp 32 from the state in which the intermediate beam assembly 20 is in contact with the arm receiver 31.
The intermediate beam positioning device 10 is fixed to the material handling jig 30.

  As shown in FIG. 3A, the intermediate beam positioning apparatus 10 includes a pair of reference pins 11, a support member (for example, a link mechanism), and an actuator (for example, a cylinder 13).

As shown in FIG. 3B, the pair of reference pins 11 is formed in a substantially hemispherical shape having a larger diameter than the inner diameter of the opening 24 a of the tube portion 24. More specifically, the reference pin 11 is formed in a shape obtained by cutting a part of the outer periphery of the base portion of the substantially hemispherical body in a plane shape with a phase shift of approximately 90 ° in the circumferential direction.
In the reference pin 11, a spherical spherical surface 11a having a diameter larger than the inner diameter of the opening 24a remains in a portion excluding a portion cut into a flat shape. At the base portion of the reference pin 11, the spherical surface 11a remains at four locations whose phases are shifted by approximately 90 °.
Therefore, when each reference pin 11 is inserted into each tube portion 24 from the opening 24a, the spherical surface 11a of the reference pin 11 comes into contact with the opening 24a of the tube portion 24 (FIG. 4 ( a)).
In the present embodiment, as described above, since the spherical surface 11a remains at an interval of 90 ° at the base portion of the reference pin 11, the spherical surface 11a and the opening 24a are in contact with each other at four points.

  As shown in FIG. 3A, the link mechanism is a member that supports the pair of reference pins 11 so as to be close to and away from each other.

The link mechanism includes a support portion 12a, a pair of slide portions 12b, rod-shaped rod portions 12e, 12f, 12g, and 12i, and a rotating shaft portion 12h.
The support portion 12 a has a flat plate shape and is fixed to the material handling jig 30. A pair of slide parts 12b is slidably attached to the support part 12a. The pair of slide portions 12b has a flat plate shape. The pair of slide portions 12b are disposed at a predetermined interval in the horizontal direction, and are supported by the support portion 12a so as to be slidable in the horizontal direction. An L-shaped pin arm portion 12c is fixed to each of the pair of slide portions 12b. Each reference pin 11 is fixed to each pin arm portion 12c via a pin bracket 12d. Each reference pin 11 protrudes outward.
One end of the first rod portion 12e is rotatably connected to one slide portion 12b of the pair of slide portions 12b, and one end of the second rod portion 12f is rotatably connected to the other slide portion 12b. Has been. The other end of the first rod portion 12e is rotatably connected to the upper end portion of the rotating rod portion 12g, and the other end of the second rod portion 12f is rotatably connected to the lower end portion of the rotating rod portion 12g. Yes. A distal end portion of the rotating shaft portion 12h is fixed to the upper and lower central portions of the rotating rod portion 12g. The rotating shaft portion 12h is rotatably supported by the support portion 12a. The upper end portion of the third rod portion 12i is rotatably connected to the lower end portion of the rotating rod portion 12g. The rotating rod portion 12g and the third rod portion 12i are, for example, a pin inserted through a hole formed in the lower end portion of the rotating rod portion 12g and a hole portion formed in the upper end portion of the third rod portion 12i. It is connected by. And in order to enable the expansion / contraction operation | movement of the cylinder 13 mentioned later, the hole of the lower end part of the rotating rod part 12g is formed in the elongate hole shape, for example. A cylinder 13 is fixed to the lower end portion of the third rod portion 12i. The cylinder 13 is configured to be able to expand and contract in the horizontal direction.

  With respect to the link mechanism having such a configuration, when the cylinder 13 is extended, the rotating rod portion 12g rotates counterclockwise in FIG. 3A, thereby causing the pair of slide portions 12b to rotate in directions opposite to each other by 180 °. To move away. Along with this, the pair of reference pins 11 move away from each other. On the other hand, when the cylinder 13 is contracted, the rotating rod portion 12g rotates clockwise, whereby the pair of slide portions 12b move in directions opposite to each other by 180 ° and approach each other. Along with this, the pair of reference pins 11 moves in a direction approaching each other.

  As described above, with respect to the intermediate beam positioning device 10, the pair of reference pins 11 are supported by the link mechanism so as to be close to and away from each other, and are supported so as to be movable in directions opposite to each other by 180 °. The pair of reference pins 11 are moved in directions opposite to each other by 180 ° by the expansion / contraction operation of the cylinder 13 so as to approach and separate from each other.

  As shown in FIG. 3A, with respect to the fixed position of the intermediate beam positioning device 10, when the intermediate beam assembly 20 is held by the material handling jig 30, the pair of reference pins 11 are paired with the pair of tube portions. 24, and the moving direction of the pair of reference pins 11 and the longitudinal direction of the torsion beam 22 are parallel (including substantially parallel).

The intermediate beam assembly 20 is held by the material handling jig 30 through the following procedures (1) to (3).
(1) The intermediate beam assembly 20 is installed by a robot hand or the like so as to be in contact with each arm receiver 31 of the material handling jig 30. At this time, in the intermediate beam assembly 20, the pair of reference pins 11 exists between the pair of tube portions 24, and the moving direction of the pair of reference pins 11 and the longitudinal direction of the torsion beam 22 are parallel (substantially parallel). Including). That is, the intermediate beam assembly 20 is installed such that the pair of reference pins 110 are disposed between the pair of tube portions 100 that are disposed at a predetermined interval from each other.
(2) As shown in FIG. 4A, the pair of reference pins 11 are separated from each other by the extension operation of the cylinder 13 of the intermediate beam positioning device 10, and the pair of reference pins 11 are placed in the pair of tube portions 24. Each is inserted from one side opening 24a. When each reference pin 11 is inserted into each tube portion 24, the spherical surface 11a of each reference pin 11 is in contact with each opening 24a.
(3) The beam clamp 32 of the material handling jig 30 is operated, and the intermediate beam assembly 20 is pressed against the arm receiver 31 by the beam clamp 32.

As described above, in the intermediate beam positioning apparatus 10, the intermediate beam assembly 20 is installed so that the pair of reference pins 11 are disposed between the pair of tube portions 24 as shown in the above (1) and (2). In this state, the pair of reference pins 11 are separated from each other by the cylinder 13, and the pair of reference pins 11 are inserted into the pair of tube portions 24 from the openings 24 a on one side, thereby positioning the intermediate beam assembly 20. I do. When each reference pin 11 is inserted into each tube portion 24, the spherical surface 11a of each reference pin 11 is in contact with each opening 24a. The spherical surface 11a (contact portion) in contact with the opening 24a has a spherical shape with a larger diameter than the inner diameter of the opening 24a.
As a result, the intermediate beam positioning device 10 allows the inner diameter of the tube portion 24 (opening 24a) without changing the shape of the reference pin 11, the inclination angle of the reference pin 11, and the shift direction (movement direction) of the reference pin 11. It is possible to position a plurality of types of intermediate beam assemblies 20 having different dimensions and inclination angles of the tube portion 24, one kind of reference pin shape, one kind of reference pin inclination angle, and one kind of reference pin shift direction. Thus, it is possible to position the plurality of types of intermediate beam assemblies 20 (see FIGS. 4A and 4B).

Further, in the intermediate beam positioning device 10, the support member (the link mechanism) supports the pair of reference pins 11 so as to be movable in directions opposite to each other by 180 °, and the actuator (cylinder 13) includes the pair of reference pins. 11 are moved in directions opposite to each other by 180 °.
Thereby, a shift force (pressing force from each reference pin 11 that moves in a separating direction) acts on each tube portion 24 of the intermediate beam assembly 20 in the opposite direction at the time of positioning. It becomes possible to cancel the shift force. Therefore, the positional deviation of the intermediate beam assembly 20 can be suppressed, and the intermediate beam assembly 20 can be positioned more accurately.

  The diameter of the spherical surface 11a (contact portion) of the reference pin 11 is as much as possible in consideration of the positioning accuracy of the product (intermediate beam assembly 20) when the intermediate beam assembly 20 is gripped by the reference pin 11. It is preferable to make it small.

  Further, as shown in FIGS. 5A and 5B, in the intermediate beam positioning device 10, the intermediate beam assembly 20 is arranged such that a pair of tube portions 24 are disposed between the pair of reference pins 11. In the installed state, the pair of reference pins 11 are brought close to each other by the actuator (cylinder 13), and the pair of reference pins 11 are inserted into the pair of tube portions 24 from the opening 24b on the other side, respectively. You may comprise so that the assembly 20 may be positioned.

  Although the present embodiment is an example of material handling, the intermediate beam positioning device 10 (each reference pin 11) may be applied to a welding jig used when welding the intermediate beam assembly 20, for example.

DESCRIPTION OF SYMBOLS 10 Intermediate beam positioning device 11 Reference pin 13 Cylinder 20 Intermediate beam assembly 21 Trailing arm 22 Torsion beam 24 Tube portion 24a Opening portion on one side 24b Opening portion on the other side 25 Wheel mounting portion

Claims (1)

A pair of trailing arms having a tube portion swingably attachable to the vehicle body and a wheel attachment portion capable of rotatably attaching a wheel;
A torsion beam having a longitudinal shape, one end of which is attached to one of the trailing arms and the other end of which is attached to the other trailing arm;
The tube portion of each trailing arm has a cylindrical shape that opens on both sides, the opening on one side thereof is disposed inside the longitudinal direction of the torsion beam, and the opening on the other side is the longitudinal direction of the torsion beam. An intermediate beam positioning device for positioning an intermediate beam assembly disposed outside,
A pair of reference pins;
A support member that supports the pair of reference pins so as to be close to and away from each other;
An actuator for approaching and separating the pair of reference pins from each other,
With the intermediate beam assembly installed so that the pair of reference pins are disposed between the pair of tube portions, the pair of reference pins are separated from each other by the actuator. The intermediate beam assembly is positioned by inserting the pair of tube portions into the pair of tube portions and holding the intermediate beam assembly by the pair of reference pins, or the pair of reference pins In a state where the intermediate beam assembly is installed so that the pair of tube portions are disposed therebetween, the pair of reference pins are brought close to each other by the actuator, and the pair of reference pins are placed in the pair of tube portions. inserting them through the opening of the other side, by grasping the intermediate beam assembly by the pair of reference pins It performs positioning of the serial intermediate beam assembly,
The pair of reference pins are contact portions that come into contact with the inserted side opening when the reference pin is inserted into the tube portion from the opening on the one side or from the opening on the other side, respectively. Have
The contact portion is formed in a spherical shape of a sphere having a diameter larger than the inner diameter of the opening to be contacted,
Intermediate beam positioning device.

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