JPH0454433Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a durability testing machine for boots for constant velocity joints, and more particularly to a durability testing machine for boots for constant velocity joints that allows easy setting of the bending angle of the boots.

[Prior art and its problems]

Conventionally, constant velocity joints, which are often used in drive shafts of front-wheel drive vehicles, bend and rotate due to impact from the road surface, so the boots that fit the constant velocity joints have poor durability. requested.

In order to test the durability of boots for constant velocity joints, it is generally necessary to set an equal distance between the fixed driving spindle and the driven spindle, which is movable in the direction of the driving spindle and can also be freely angularly displaced. There is a known method that tests the durability against bending rotation of a boot fitted with a constant velocity joint by attaching a velocity joint, moving the driven side spindle, setting an arbitrary bending angle, and rotating it. ing.

However, in the above-mentioned conventional durability testing machine for boots for constant velocity joints, in order to bend and rotate the boots, the center of bending of the constant velocity joint must coincide with the center of swing of the testing machine.
In order to align these centers, the configuration of the testing machine becomes complicated, and the adjustment becomes complicated, which poses the problem of requiring a great deal of labor, especially when testing a large number of samples at once. Ta.

The present invention solves the problems of the conventional products as described above, and provides a durability testing machine for boots for constant velocity joints that allows easy setting of the bending angle of the boot and has a simple configuration. The purpose is to

[Means to solve the problem]

In order to solve the above problems, the present invention includes: a pair of guide members fixed to face each other on the upper part of the base; a movable reciprocating plate disposed between the guide members;
a swinging plate that is swingable in the upper part of the reciprocating plate and has a sliding groove in the upper part; a driven-side bearing part that is slidably disposed in the sliding groove of the swinging plate; a driven body consisting of a driven side main shaft which is pivotally supported by a side bearing part and has a sample mounting member at one end; The sample mounting member facing the member also includes a driving body having a drive-side main shaft each provided with a drive device at the other end, and between the sample mounting member of the driven body and the sample mounting member of the driving body. This method employs means for supporting the constant velocity joint with the boot fitted thereon.

[Effect]

By adopting the above-mentioned means, the present invention eliminates the need to align the bending center of the constant velocity joint with the swing center of the testing machine when bending and rotating the boot, and also makes it easy to set the bending angle of the boot. can.

〔Example〕

Embodiments of the present invention shown in the drawings will be described below.

FIG. 1 is a plan view of an embodiment of the present invention, and FIG.
The figure shows a front view of the device according to FIG. 1, and FIG. 3 shows a side view of the device according to FIG. Further, FIG. 4 shows a cross section taken along line XX in FIG. 1.

In FIG. 1, FIG. 2, FIG. 3, and FIG. 4, a driven body A and a driving body B are disposed facing each other on the upper part of the base 14. As shown in FIG.

The driven body A is a guide member 1 that is fixed opposite to the upper part of the base 14 and has grooves 10a and 11a parallel to the upper surface of the base 14 on each opposing surface.
0, 11 and the guide members 10, 11, a female threaded portion 12 and a threaded shaft 13 screwed into the female threaded portion 12 are provided at the lower part, and have a bearing portion 9a, and end portions 9b, 9c inserted into the grooves 10a, 11b of the guide members 10, 11 to be movable in the horizontal direction; A rocking plate 8 into which a shaft 8b is inserted, which is horizontally swingable on the upper part of a reciprocating plate 9, and which has a sliding groove 8a in the upper part, and a sliding groove in this rocking plate 8. By inserting the lower part 6a into the lower part 6a, a driven side bearing part 6 which is disposed so as to be slidable in the horizontal direction, and a sample mounting member 4 which is supported by the driven side bearing part 6 at one end, is formed. A driven side main shaft 2 is provided.

Note that the threaded shaft 13 screwed into the female threaded part 12 provided at the lower part of the reciprocating plate 9 is connected to the bearing part 17.
Further, the tip thereof is connected to a drive source such as an actuator 16, and by operating the drive source such as the actuator 16, the screw shaft 13 rotates, and the reciprocating plate 9 is adapted to move horizontally.

Further, in order to swing the swing plate 8 in the horizontal direction, the swing axis 8b of the swing plate 8 is perpendicular to the base 14.

On the other hand, the driving body B disposed opposite to the driven body A includes an auxiliary stand 7 fixed to the upper part of the base 14 and a driving side bearing part 5 disposed on the upper part of the auxiliary stand 7. A sample mounting member 3 is rotatably supported by the driving side bearing portion 5, and a sample mounting member 3 is provided at one end facing the sample mounting member 4 of the driven side main shaft 2, and a drive device 15 is provided at the other end.
and a drive-side main shaft 1 that connects the two.

Note that the axial center of the driven side main shaft 2 and the driving side main shaft 1
It is aligned with the axis of

In order to perform a boot durability test using the boot durability tester for constant velocity joints according to the present invention configured as described above, the boot 19 on which the constant velocity joint 18 is fitted is placed on the drive side together with the constant velocity joint 18. between the specimen mounting member 3 on the driven side and the sample mounting member 4 on the driven side.

Then, when the screw shaft 13 provided at the lower part of the reciprocating plate 9 is rotated by operating a drive source such as the actuator 16 to move the reciprocating plate 9 in the horizontal direction, the reciprocating plate 9 Along with the movement, the swing shaft 8b of the swing plate 8 inserted into the bearing portion 9a of the reciprocating plate 9 also moves by the same amount in the same direction as the direction in which the reciprocating board 9 moves.

Then, the sample mounting member 3 and the sample mounting member 4
Constant velocity joint 18 installed between
begins to bend around the bending center D.

At the same time, due to the bending force of the constant velocity joint 18, the swing plate 8 swings horizontally on the reciprocating plate 9 about its swing axis 8b, and furthermore, the sliding groove of the swing plate 8 The driven side bearing part 6 provided at 8a slides horizontally in the direction of the bending center D of the constant velocity joint 18.

Then, by stopping the rotation of the screw shaft 13, a bending angle is given to the constant velocity joint 18,
Accordingly, the same bending angle as that of the constant velocity joint 18 is given to the boot 19 on which the constant velocity joint 18 is fitted.

Therefore, depending on the amount of rotation of the screw shaft 13, a bending angle is given to the constant velocity joint 18 installed between the sample mounting member 3 on the drive side and the sample mounting member 4 on the driven side. Accordingly, the same bending angle as the constant velocity joint 18 is given to the boot 19 that fits the constant velocity joint 18.

Constant velocity joint 18 for the action shown above
A schematic diagram showing the relationship between the bending center D and the swing center C of the testing machine is shown in FIG.

In this way, by bending the boot 19 and rotating the drive-side main shaft 1, the boot 19
The durability against bending rotation can be tested.

In the present invention, the reciprocating plate 9 is moved using the screw shaft 13 in order to bend the boot 19, but the present invention is not limited to this, and any structure having movable elements may be used.

Furthermore, in order to swing the swing shaft 8b, the swing shaft 8b is
An actuator or the like may be directly connected to b.

Further, the driven side bearing portion 6 may be fixed and moved in the direction of the driven side main shaft 1.

[Effect of idea]

By configuring the present invention as described above, when conducting a durability test against bending rotation of a boot for a constant velocity joint, there is no need to align the bending center of the constant velocity joint with the swing center of the testing machine. This has excellent effects such as being able to easily set the bending angle of the boot and simplifying the configuration of the testing machine for setting the bending angle of the boot.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the durability testing machine for constant velocity joint boots according to the present invention, Fig. 2 is a front view of the machine according to Fig. 1, Fig. 3 is a side view of the machine according to Fig. 1, and Fig. 4 is a A sectional view showing the XX cross section of the figure,
FIG. 5 is a diagram showing the relationship between the bending center of the constant velocity joint and the swing center of the testing machine. 1... Drive side main shaft, 2... Driven side main shaft, 3, 4
...Sample mounting member, 5...Drive side bearing part, 6...
... Driven side bearing part, 7 ... Auxiliary stand, 8 ... Rocking plate,
8a...Sliding groove, 8b...Swing shaft, 9...Reciprocating plate, 9a, 17...Bearing portion, 9b, 9c...End portion, 10, 11...Guiding member, 10a, 11a...
... Concave groove, 12 ... Female threaded part, 13 ... Screw shaft, 1
4... Base, 15... Drive device, 16... Actuator, C... Swing center, D... Bending center of constant velocity joint, A... Driven body, B... Drive body, 18... Constant velocity joint, 19...boots.

Claims (1)

[Scope of utility model registration request] A pair of guide members 10 and 11 fixed to face each other on the upper part of the base 14, a movable reciprocating plate 9 disposed between the guide members 10 and 11, and the reciprocating plate 9.
A rocking plate 8 that is swingable at the upper part of the rocker and has a sliding groove 8a in the upper part, and a sliding groove 8 of the rocking plate 8.
a driven body consisting of a driven side bearing part 6 that is slidably disposed on a, and a driven side main shaft 2 that is pivotally supported by the driven side bearing part 6 and has a sample mounting member 4 at one end;
A sample mounting member 3 is supported by a drive side bearing 5 on the upper part of the base 14, and a sample mounting member 3 facing the sample mounting member 4 of the driven side main shaft 2 is provided at one end, and a drive device 15 is provided at the other end. a constant velocity joint 1, comprising a drive body having a drive-side main shaft 1, with a boot 19 fitted between the sample attachment member 4 of the driven body and the sample attachment member 3 of the drive body;
Durability testing machine for constant velocity joint boots characterized by supporting 8.