JP2002019657A - Assembly device for suspension - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the reliability of assembly work of a suspension to a car body. SOLUTION: A first arm receiver 2 supporting a suspension arm A1 in a first connecting part A12; a second arm receiver 3 supporting the suspension arm A1 in a second connecting part A13; a third arm receiver 4 supporting the suspension arm A1 in a part positioning at the vertex of a triangle having a connecting line between the connecting parts A12, A13 as the base, including a damper connecting part of the suspension arm A1 on the inside; and a damper receiver 5 supporting the lower end A30 of the damper A3 are installed on a pallet 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a first vehicle body.
The present invention relates to a suspension assembling apparatus for assembling a suspension having a suspension arm provided with a second pair of connecting portions and a spring-loaded damper having a lower end connected to the suspension arm to a vehicle body.

[0002]

2. Description of the Related Art Conventionally, as a vehicle suspension,
According to Japanese Patent Application Laid-Open No. H10-264627, a suspension arm includes a trailing arm portion and a lateral arm portion fixed to a trailing end of the trailing arm portion in a vehicle length direction and capable of elastically deforming and deforming in the vehicle length direction. The first connecting portion provided at the front end in the vehicle length direction of the trailing arm portion,
A first rubber bush having a degree of freedom of rotation about an axis inclined inward in the vehicle width direction toward the rear in the vehicle length direction with respect to the vehicle body is incorporated, and a second connecting portion provided at the vehicle width direction inner end of the lateral arm portion. A suspension in which a second rubber bush having a degree of freedom of rotation about an axis parallel to a vehicle length direction with respect to a vehicle body is incorporated is known. According to this, when the wheel is pulled rearward with respect to the vehicle body during braking, the lateral arm is bent, and the front end of the trailing arm is shifted rearward due to the elastic deformation of the first rubber bush while being inward in the vehicle width direction. As a result, an optimum toe-in change during braking is obtained.

By the way, the axis of the second rubber bush incorporated in the second connecting portion is oblique to the axis of the first rubber bush incorporated in the first connecting portion. When the suspension arm swings about the axis of the first rubber bush, the second rubber bush swings and the direction of the axis of the second rubber bush changes. Here, the suspension arm is configured such that the axis of the second rubber bush is parallel to the vehicle length direction when the suspension arm is at the swinging position when a load equivalent to the vehicle weight is applied.

[0004] Thus, when the suspension, which is formed by pivotally connecting the lower end of a damper with a spring to the suspension arm, is mounted on a pallet, and the pallet is lifted from a position below the vehicle body, the pallet is mounted on the pallet. A state in which the suspension arm is supported in a posture that matches the swinging position, that is, a posture in which the axis of the second rubber bush is parallel to the vehicle length direction, and the pallet receives a load equivalent to the vehicle weight of the damper. It is necessary to raise to a position where it can be contracted.

[0005]

When the suspension is mounted on a vehicle body with the suspension mounted on a pallet as described above,
It is desirable to support the suspension arm so that it can float on the pallet in order to absorb the misalignment of each connection part with respect to the attachment part on the vehicle body side that connects each connection part of the suspension arm. However, when the pallet is raised to the above position, a compression reaction force corresponding to the vehicle weight of the spring mounted on the damper acts on the suspension arm, and the suspension reaction is strongly pressed against the pallet by the compression reaction force, and the suspension arm is pressed. May not be able to float, and misalignment may not be absorbed, resulting in an assembly error.

[0006] In view of the above, the present invention prevents the suspension arm from becoming unable to float,
It is an object of the present invention to provide an assembling device capable of reliably assembling a suspension to a vehicle body.

[0007]

Means for Solving the Problems In order to solve the above problems,
The present invention provides a pallet for mounting a suspension having a suspension arm having a first and a second pair of connecting portions to a vehicle body and a spring-loaded damper having a lower end connected to the suspension arm. In a device for assembling a suspension to a vehicle body by raising the damper from a position below the vehicle body to a predetermined position where the damper is reduced to a state when receiving a load corresponding to the vehicle weight, a suspension arm is mounted on a pallet at a first connection portion. A first arm receiver for supporting, a second arm receiver for supporting the suspension arm at the second connecting portion, and a connection between the first and second connecting portions, in which a damper connecting portion of the suspension arm enters inside, is defined as a base. A third arm support for supporting the suspension arm at a portion located at the vertex of the triangle to be supported, and a lower end for the damper. And the damper received are provided for.

According to the present invention, even if the compression reaction force of the spring mounted on the damper increases to a value corresponding to the vehicle weight by raising the pallet to the predetermined position, the compression reaction force is received by the damper receiver. Therefore, it is possible to prevent the suspension arm from being unable to float on the pallet. Also, when the upper end of the damper is fitted into the positioning hole on the vehicle body side, the posture of the damper changes, and a rotational moment around the damper connecting portion may act on the suspension arm. 1st to 3rd
The first and second connecting portions do not rise up from the respective arm receivers due to the rotation of the suspension arm. Thus, the suspension can be securely mounted on the vehicle body with the pallet raised to the predetermined position.

Incidentally, the above-mentioned Japanese Patent Application Laid-Open No. 10-264627.
As described in the publication, the suspension arm is composed of a trailing arm portion, and a lateral arm portion fixed to the trailing end of the trailing arm portion in the vehicle length direction and elastically flexibly deformable in the vehicle length direction. A first rubber bushing having a degree of freedom of rotation about an axis inclined inward in the vehicle width direction toward the rear in the vehicle length direction with respect to the vehicle body is incorporated in a first connecting portion provided at a front end of the trailing arm portion in the vehicle length direction. In the case where a second rubber bush having a degree of freedom of rotation about an axis parallel to the vehicle length direction with respect to the vehicle body is incorporated in a second connection portion provided at an inner end in the vehicle width direction of the lateral arm portion, the second connection A pair of positioning pieces that sandwich the outer collar of the second rubber bush incorporated in the second connecting portion from both sides in the vehicle length direction are erected on a second arm receiver that supports the second rubber bushing. Inner color It is desirable to form the insert freely positioning groove a protruding portion in the vehicle length direction from above. However, in this state, if a connection error of the second connecting portion to the vehicle body occurs, when the suspension arm swings downward about the axis of the first rubber bush incorporated in the first connecting portion due to the lowering of the pallet. The outer collar bites between the pair of positioning pieces by the swinging motion of the second rubber bush incorporated in the second connection part, and the second connection part is pulled downward through both the positioning pieces, and the lateral The arm may be deformed. In this case, if the portions of the positioning pieces that form the groove walls on both sides in the vehicle width direction of the positioning grooves are constituted by movable pieces that can be opened and closed in the vehicle width direction, the pallet is lowered with the movable pieces opened. As a result, the outer collar of the second rubber bush does not bite between the two positioning pieces, and deformation of the lateral arm portion is prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a rear suspension assembly shown in FIGS. 6 and 7 will be described below. This suspension comprises a trailing arm portion A10 and a lateral arm portion A11 fixed to the rear end of the trailing arm portion A10 in the vehicle length direction and made of a plate material that can be elastically bent and deformed in the vehicle length direction. Arm A1 and damper A with spring A2 having a lower end connected to trailing arm A10
And a brake drum A serving as a wheel mounting member.
The knuckle A5, which pivotally supports the knuckle 4, is connected to the trailing arm portion A10 at two lower ends thereof, and the upper arm A6 is connected to the upper end of the knuckle A5, so that a double wishbone suspension is configured as a whole.

The suspension arm A1 has a first connecting portion A provided at the front end in the vehicle length direction of the trailing arm portion A10.
12 and a second connecting portion A13 provided at the inner end in the vehicle width direction of the lateral arm portion A11. Here, as shown in FIG. 8, a first rubber bush A12a is incorporated in the first connecting portion A12. To elaborate on this,
An outer collar A12b fixed to the outer periphery of the first rubber bushing A12a is fixed to the trailing arm portion A10, and a support shaft A12d is inserted and inserted into an inner collar A12c fixed to the inner periphery of the first rubber bushing A12a. Mounting pieces A12e, A fixed to both ends of A12d
The first connecting portion A12 is connected to the vehicle body by fastening the 12e to the floor frame B1 of the vehicle body with a bolt A12g inserted into a mounting hole A12f formed therein. In this connection state, the support shaft A12d, that is, the axis a of the second rubber bush A12a is inclined inward in the vehicle width direction toward the rear in the vehicle length direction. In the drawing, B1a is a nut fixed to the floor frame B1. 2nd connection part W1
As shown in FIG. 9, the second rubber bush 3 incorporates a second rubber bush A13a. The outer collar A13b fixed to the outer periphery of the second rubber bushing A13a is fixed to the lateral arm portion A11, and the inner collar A13c fixed to the inner periphery of the second rubber bushing A13a is fixed to the lower surface of the floor of the vehicle body. A pair of brackets B2 and B2 facing in the longitudinal direction are fixed, and both brackets B2 and B2 are fixed.
Axle bolt A13d through inner collar A13c
Is inserted in parallel with the vehicle length direction, and a spindle bolt A13d is screwed into a nut B2a fixed to the bracket B2 on one side to connect the second connecting portion A13 to the vehicle body. Here, the second rubber bush A13a holds the first rubber bush A1 in a free state where it is not connected to the vehicle body.
The suspension arm A1 swings around the axis a of the axis 2a and swings to change the direction of the axis of the second rubber bush A13a. When the suspension arm A1 is at the swing position when receiving a load equivalent to the vehicle weight, the axis of the second rubber bush A13a is made parallel to the vehicle length direction.

As shown in FIG. 5, a rubber bushing A30a is also incorporated in a connecting portion A30 at the lower end of the damper A3 to the trailing arm portion A10. The outer collar A30 fixed to the outer periphery of the rubber bush A30a by baking.
b is fixed to the damper A3, and a pair of brackets A10 sandwiching the inner collar A30c fixed to the trailing arm portion A10 by baking on the inner periphery of the rubber bushing A30a.
a, A10a, and both brackets A10a, A10
Support bolt A30 through inner collar A30c
By inserting d, the connecting portion A30 is connected to the trailing arm portion A10. A tapered guide cap A31 is attached to the upper end of the damper A3 via a rubber bush (not shown).
Is fitted into a positioning hole B3a formed in the ceiling of the damper housing B3 of the vehicle body as shown in FIG. 10 and a flange portion at the lower end of the guide cap A31 is inserted into a bolt insertion hole formed at a plurality of locations around the positioning hole B3a. A plurality of bolts A31a planted in the
Nut A 31b is screwed into the upper part 31a from above and the damper A
3 is connected to the vehicle body.

Bearings are incorporated in the two connecting portions A50 and A51 at the lower end of the knuckle A5 with respect to the trailing arm portion A10, and the trailing arm portion A10 has one pair corresponding to each of the connecting portions A50 and A51. The brackets A10b, A10b, A10c, A10c are fixed, and both connecting portions A50, A51 are pivotally connected to these brackets via bearings, respectively. The upper arm A5 is attached later after the suspension is assembled.

Referring to FIG. 1, reference numeral 1 denotes a pallet used in a process of assembling a suspension to a vehicle body. When the left and right suspensions are mounted on the pallet 1, the pallet 1 is viewed from below the vehicle body. Raise it with an external lifter and attach the suspension to the vehicle body.

On the pallet 1, a first arm receiver 2 for supporting the suspension arm A1 at a first connection portion A12, and a suspension arm A1 for connecting the suspension arm A1 to a second connection portion A13.
And a triangle b having a base line at the connection between the first and second connecting portions A12 and A13, into which the second arm receiver 3 supported at the first position and the damper connecting portion of the suspension arm A1 enter.
For example, a third arm receiver 4 that supports the suspension arm A1 at a connection portion A50 at the front lower end of the knuckle A5, a damper receiver 5 that supports the lower end of the damper A3, and a brake drum A4. Bolts A1 arranged on both sides of the drum receiver 6 and the first arm receiver 2
A pair of first tightening sockets 7, 7 for 2g, and a support bolt A13d disposed rearward in the vehicle length direction of the second arm receiver 3
A second tightening socket 8 is provided. Each first
The tightening socket 7 is supported by a guide sleeve 7a erected on the pallet 1 so as to be vertically movable, and the second tightening socket 8 is mounted on a movable frame 8b which is advanced and retracted in the vehicle length direction by a cylinder 8a. 8c. In the pallet 1, a pair of positioning pins 9, 9 which fit into reference holes formed in the vehicle body are provided upright via air cylinders 9a. Then, the pallet 1 is supported on the lifter so as to be freely floatable, and the positioning pin 9, 9 is fitted into the reference hole of the vehicle body by raising the pallet 1 so that the pallet 1 can be positioned relative to the vehicle body. ing.

The vertical relative positions of the first to third arm receivers 2, 3, and 4 can support the suspension arm A1 in a posture that matches the swing position when a load equivalent to the vehicle weight is applied. It is set as follows. Here, as shown in FIGS. 2A and 2B, the first arm receiver 2 includes a block 20 for receiving the lower surface of the outer collar A12b of the first rubber bush A12a incorporated in the first connecting portion A12, and a support shaft. A
There is provided a pair of positioning pieces 21 and 21 each having a positioning groove 21a into which the mounting pieces A12e at both ends of 12d can be inserted from above.

As shown in FIGS. 3A and 3B, the second arm receiver 3 stands upright so as to sandwich the outer collar A13b of the second rubber bush A13a incorporated in the second connecting portion A13 from both sides in the vehicle length direction. A pair of positioning pieces 30, 30, each of which has a second rubber bushing A1.
A positioning groove 30a is formed to allow the protrusion of the inner collar A13c of 3a to be inserted from above. Further, a portion of each positioning piece 30 forming a groove wall on both sides in the vehicle width direction of each positioning groove 30a is constituted by a movable piece 30b that can be opened and closed in the vehicle width direction, and one side of the both positioning pieces 30, 30 in the vehicle width direction. Movable pieces 30b, 30b and the movable pieces 30b, 30b on the other side in the vehicle width direction.
Are opened and closed by a pair of cylinders 31 in the vehicle width direction. When the movable pieces 30b, 30b on both sides in the vehicle width direction are closed, the two movable pieces 30b, 30b are closed.
b, the groove width of the positioning groove 30a defined between the inner collars A is slightly larger than the outer diameter of the inner collar A13c.
When the support bolt A13d is inserted into the inner collar A13c through the bolt insertion hole of the bracket B2, the inner collar A13c is aligned with the taper portion at the tip of the support bolt A13d. It is arranged to be concentric with the bolt insertion hole of B2.

As shown in FIG. 4, the third arm receiver 4 is configured to receive the outer peripheral lower surface of the connecting portion A50 on the lower front side of the knuckle A5, and the damper receiver 5 has a damper A3 as shown in FIG. It is configured to receive the lower surface of the outer collar A30b of the rubber bush A30a incorporated in the connecting portion A30 at the lower end of the rubber bushing A30b.

When assembling the suspension, the suspension is placed on the pallet 1 and the pallet is set in such a manner that the bolts A12g and the support bolts A13d are set in the first and second fastening sockets 7 and 8, respectively. 1 is raised from a position below the vehicle body. According to this, first, the positioning pins 9, 9 are fitted into the reference holes of the vehicle body, and the pallet 1 is positioned with respect to the vehicle body. Next, the guide cap A31 at the upper end of the damper A3 is moved to the positioning hole of the damper housing B3. B3a fits. At this time, the posture of the damper A3 changes, and a rotational moment accompanying the change in the posture of the damper A3 may act on the suspension arm A1 due to friction between the inner collar A30c of the rubber bushing A30a and the brackets A10a, A10a. Since the arm A1 is supported by the first to third three arm receivers 2, 3, and 4 so as to form a triangle into which the damper connecting portion enters, the suspension arm A1 has a constant posture even when a rotational moment acts. It is supported stably.

The guide cap A31 has a positioning hole B3a.
When the pallet 1 rises, the damper A3
Is compressed against the urging force of the spring A2. Then, when the pallet 1 is raised to a predetermined position where the damper A3 is reduced to a state when receiving a load equivalent to the vehicle weight,
The first and second connecting portions A12 and A13 of the suspension arm A1 supported in a posture matching the swing position when receiving a load equivalent to the vehicle weight reach a predetermined assembly position with respect to the vehicle body. In this state, the first tightening sockets 7, 7 are rotated by a drive source (not shown), and the mounting pieces A12e, A12e at both ends of the support shaft A12d provided on the first connecting portion A12 are attached to the floor frame B1 by bolts A12g, A12g. At the same time, the second tightening socket 8 is advanced in the vehicle length direction, and the support bolt A13d is connected to the pair of brackets B2,
B2 is inserted through the inner collar A13c of the second connecting portion A13. In this state, the second tightening socket 8 is rotated by a driving source (not shown) to screw the support bolt A13d into the nut B2a. The upper end of A3 is fastened to the ceiling of the damper housing B3 with a nut A31b. After the suspension is assembled to the vehicle body in this manner, the pallet 1 is lowered to complete one assembly operation.

Here, when the pallet 1 is raised to the predetermined position, the compression reaction force of the spring A2 increases to a value corresponding to the vehicle weight. However, this compression reaction force is applied to the outer portion of the connecting portion A30 at the lower end of the damper A3. It is received by the damper receiver 5 via the collar A30b. Therefore, the compression reaction force of the spring A2 does not act on the rubber bushing A30a of the connecting portion A30, and the suspension arm A1 can move freely within the elastic range of the rubber bushing A30a. Thus, the freedom of movement of the suspension arm A1 when the support bolt A13d is inserted into the inner collar A13c of the second connecting portion A13 to center the inner collar A13c is secured.

The inner collar A13c has a support bolt A
When the pallet 1 is lowered when the pallet 1 is lowered when the 13d cannot be inserted and an error in assembling the second connecting portion A13 to the vehicle body occurs.
The swing of the suspension arm A1 about the support shaft A12d of the first connecting portion A12 causes the second connecting portion A13 to swing, so that the pair of positioning pieces 3 of the second arm receiver 3
Outer collar A13b of the second connecting portion A13 between 0 and 30
May be bitten in an oblique state, and the lateral arm portion A11 may be pulled downward via the second arm receiver 3 to cause deformation of the lateral arm portion A11. Therefore, in the present embodiment, before the pallet 1 is lowered, a pair of movable pieces 30b, 30b constituting each positioning piece 30 is set.
Are opened in the vehicle width direction so that the outer collar A13b can be prevented from biting when the pallet 1 is lowered.

[0023]

As is apparent from the above description, according to the present invention, the suspension arm can be stably supported in a fixed posture, and the suspension arm can be prevented from floating due to the compression reaction force of the spring.
The reliability of the work of attaching the suspension to the vehicle body is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a pallet of the apparatus of the present invention.

2A is a cross-sectional view of the first arm receiver taken along the line IIA-IIA in FIG. 1, and FIG. 2B is a side view of the first arm receiver viewed from the direction of arrow IIB in FIG.

3A is a front view of the second arm receiver as viewed from the direction of arrow IIIA in FIG. 1, and FIG. 3B is a side view of the second arm receiver as viewed from the direction of arrow IIIB in FIG.

FIG. 4 is a sectional view of a third arm receiver.

FIG. 5 is a sectional view of a damper receiver.

FIG. 6 is a perspective view of a suspension.

FIG. 7 is a plan view of a suspension.

8 is a cross-sectional view of a state where the first connecting portion is connected to the vehicle body, taken along line VIII-VIII in FIG. 7;

9 is a cross-sectional view of a state where the second connecting portion is connected to the vehicle body, taken along line IX-IX in FIG. 7;

FIG. 10 is a diagram showing a connection portion between a damper upper end and a vehicle body.

[Explanation of symbols]

A1 Suspension arm A10 Trailing arm part A11 Lateral arm part A12 First connection part A12a First rubber bush A13 Second connection part A13a Second rubber bush A13b Outer collar A13c Inner collar A2 Spring A3 Damper 1 Pallet 2 First arm receiver 3 Second arm receiver 30 Positioning piece 30a Positioning groove 30b Movable piece 4 Third arm receiver 5 Damper receiver

Claims (2)

[Claims] 1. A pallet for mounting a suspension having a suspension arm having a first and a second pair of connecting portions to a vehicle body and a spring-loaded damper having a lower end connected to the suspension arm. From the lower position of the vehicle body to a predetermined position where the damper is contracted to a state when receiving a load equivalent to the vehicle weight,
An apparatus for mounting a suspension on a vehicle body, comprising: a first arm receiver for supporting a suspension arm at a first connection portion on a pallet; a second arm receiver for supporting a suspension arm at a second connection portion; Part goes inside, 1st
A third arm receiver for supporting the suspension arm at a portion located at the vertex of a triangle having a bottom line as a connection between the first and second connecting portions, and a damper receiver for supporting a lower end of the damper. Suspension assembly device. 2. A suspension arm comprising a trailing arm and a lateral arm fixed to a trailing end of the trailing arm in a vehicle length direction and elastically deformable in a vehicle length direction. A first rubber bush having a degree of freedom of rotation about an axis inclined inward in the vehicle width direction with respect to the vehicle body toward the vehicle length direction rear is incorporated into a first connecting portion provided at a front end in the vehicle length direction of the arm portion, and a lateral rubber is provided. The invention is applied to a suspension in which a second rubber bush having a degree of freedom of rotation about an axis parallel to a vehicle length direction is incorporated into a second connecting portion provided at an inner end in a vehicle width direction of an arm portion. The suspension assembling device according to any one of claims 1 to 3, wherein a pair of positioning pieces are provided upright on the second arm receiver so as to sandwich the outer collar of the second rubber bush incorporated in the second connecting portion from both sides in the vehicle length direction. A portion of each positioning piece that forms a positioning groove in which a projecting portion of the inner collar of the second rubber bush in the vehicle length direction can be inserted from above and a groove wall on both sides in the vehicle width direction of each positioning groove. A movable piece that can be opened and closed in the vehicle width direction.