JP3325971B2 - Seal jig for torque converter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing jig for a torque converter for feeding an inspection fluid into the interior and inspecting the airtightness of a weld after the torque converter is assembled by welding.

[0002]

2. Description of the Related Art Conventionally, as such a seal jig for a torque converter, for example, the one shown in FIG. 6 is known. That is, the torque converter seal jig 51 is provided with an upper frame 53 and a lower frame 54 facing each other above and below the vertical frame 52. On the lower frame 54, the torque converter 11
Is provided on the table 55 for placing the. The table 55 is provided with a center shaft 56 for positioning the torque converter 11 with the centering bush 12. The sleeve 1 projects outward from the center of the impeller housing 13 of the torque converter 11.
4 is provided at a position facing the centering bush 12.

On the other hand, a shaft support member 5 is
The shaft support member 57 supports a support shaft 59 having a fluid passage 58 at the shaft center so as to be slidable up and down. In addition, a fluid introduction port 58 a is provided in an upper portion of the fluid passage 58. Further, at the lower end of the support shaft 59, a washer-shaped seal rubber 60 is provided so as to be held. The support shaft 59 is vertically movable by an air cylinder 61, and the vertical frame 52 is vertically movable by an air cylinder (not shown).

In the above configuration, first, after the support shaft 59 is moved to the uppermost end by the air cylinder 61, the torque converter 11 is positioned on the center shaft 56 by the centering bush 12 and placed on the table 55. You. When the support shaft 59 is lowered by the air cylinder 61, the seal rubber 60 is
The fluid passage 58 and the inside of the torque converter 11 are sealed from the outside because they are pressed against the upper end surface of the sleeve 14.

Next, a fluid, for example, air is fed from the fluid inlet 58a. If there is a defect such as a crack in the welded portion or the housing portion of the torque converter 11, air leaks from the defective portion. When the vertical frame 52 is lowered by an air cylinder (not shown) and the torque converter 11 is immersed in water in a water tank (not shown) in order to detect the leaked portion of the air, bubbles rise from the defective portion to the water surface. As a result, the position of the defect can be detected.

[0006]

Since the seal rubber 60 is brought into contact with the edge of the upper end of the sleeve 14, the contact area is small and the surface pressure is high, so that the seal rubber 60 is liable to wear and breakage and has a long life. There is a problem that it is short. In addition, there is also a problem that fluid leakage easily occurs due to a small sealing area. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a torque converter sealing jig which has no seal rubber abrasion or breakage, has a large seal area, and has good sealability in view of the above-mentioned conventional problems.

[0007]

In order to achieve the above object, the present invention provides a seal jig for feeding a fluid inside to check the airtightness of a torque converter and for preventing external leakage. A core member having a hollow cylindrical seal rubber whose outer diameter fits with the inner diameter portion of the sleeve of the torque converter at the inner diameter portion, and having a fluid passage in the axial core portion, the core member being slidable in the axial direction. and the main body for supporting, in order to contact with the sleeve bore to expand the outer diameter of the sealing rubber, and a axial pressing means for pressing the seal rubber in the axial direction, the sealing rubber includes a body volume
Between the data and the end of the core member inserted into the sleeve
And the core member projects to a position spaced from the end.
A lock is provided, and the axial pressing means closes the open end of the sleeve.
By pressing against the protruding block, the seal rubber
Pressing was performed between the body body and the end of the core member .

[0008]

After placing the torque converter on the axial pressing means, the core member supported by the main body is slid,
The seal rubber is loosely inserted into the inner diameter of the sleeve.
Then, the opening end of the sleeve is pressed against the protruding block to operate the axial pressing means, so that the seal rubber is in contact with the main body.
When the seal rubber is pressed in the axial direction between the core member and the end portion , the hollow cylindrical seal rubber becomes a via barrel shape and the outer diameter expands. Therefore, the seal rubber is pressed by the inner diameter portion of the sleeve to exhibit a sealing function. Thereafter, if the fluid is sent into the torque converter through the fluid passage in the core member, the fluid leaks from a portion where the airtightness of the torque converter is defective. Therefore, the leak of the fluid is detected by detecting the leakage of the fluid. Can be detected. At this time, the seal rubber is inserted into the sleeve in a loose state, which prevents wear and breakage and prolongs the service life.In addition, since the seal rubber comes in contact with the inner diameter of the sleeve and seals, the seal area is large, improving sealing performance. can do.

[0009]

FIG. 1 is an axial sectional view showing an embodiment of the present invention. Particularly, the right side from the center line shows a state in which the seal rubber portion is being inserted into the sleeve, and the left side shows a seal rubber pressurized state. The torque converter seal jig 1 is provided with a work cover 2 having an upper wall 3 and a peripheral wall 4 on the lower peripheral edge of the upper wall 3 as shown in FIG. A seal 5 is provided on the lower end surface of the peripheral wall 4. The work cover 2 is composed of the upper wall 3 and the peripheral wall 4.
These form a gas chamber R.

A main body 6 is provided on a center hole 2a formed in the upper wall 3 of the work cover 2 by a bolt 8 via a seal 7. The body 6
A core member 9 is provided in the vertically extending center hole 6a so as to be slidable vertically. A fluid passage 10 is provided in the axial center of the core member 9 so as to penetrate vertically and to guide the fluid into the torque converter 11. The upper part of the fluid passage 10 is connected to the fluid inlet 1.
0a.

As shown in FIG. 2, the torque converter 11 is provided with a centering bush 12 at the center of a lower converter housing. Then, after the built-in components are assembled thereon, the impeller housing 13
Is put on and welded. This impeller housing 13
A pipe-shaped sleeve 14 is provided so as to protrude upward from the center.

On the other hand, a snap ring 15 is provided slightly above the middle of the core member 9 to prevent the core member 9 from dropping. A moving space 16 is provided at an upper portion of the main body 6 so as to support the snap ring 15 and move up and down. A cap 17 is attached to the upper portion by a bolt 18. A center hole 17a is provided through the center of the cap 17 so that the core member 9 can slide up and down. In order to prevent the core member 9 from rattling, a weak spring for urging the snap ring 15 downward may be provided in the moving space 16 or the like as necessary.

Below the core member 9, an appropriate number of hollow cylindrical seal rubbers 19 are provided with the center hole supported by the core member 9. The outer diameter of the seal rubber 19 is set so as to fit in the inner diameter hole of the sleeve 14 of the torque converter 11 and move up and down.
Further, when the seal rubber 19 is pressed from above and below by the axial pressing means 20, the outer diameter portion expands like a via barrel and presses the inner diameter hole of the sleeve 14 so that the sleeve 1 is pressed.
The space between the core member 4 and the core member 9 is sealed.

The structure of the axial pressing means 20 is as follows.
First, an upper washer 21 above and below the seal rubber 19,
The lower washer 22 is movably held by a lower outer diameter portion of the core member 9 and is supported by a nut 23 engaged with the core member 9 from below. And upper washer 2
Reference numeral 1 denotes a plurality of slits 2 provided on the lower surface of the main body 6.
The upward movement is suppressed by the ring-shaped stopper 24 divided by 6.

In order to push up the core member 9 from below by the sleeve 14, the core member 9 is provided with a plurality of projecting blocks 25. The projecting block 25 is aligned with the slit 26 of the stopper so as to move up and down in the slit so as not to interfere with the stopper 24.

On the other hand, a table 27 is provided below the torque converter seal jig 1. At the center of the table 27, a converter lifter 28, which is engaged with the centering bush 12 of the torque converter, is provided on a center shaft 29 so as to be vertically movable. The center shaft 29 is driven up and down by an air cylinder (not shown). Further, the table 27 is provided with a ventilation hole 30 communicating with a gas detector (not shown). The work cover 2, body 6,
The cap 17 is integrally driven up and down.

The present embodiment is configured as described above.
As shown in FIG. 2, after the torque converter seal jig 1 and the work cover 2 are moved to the uppermost position by an air cylinder (not shown), the torque converter 1
1 is positioned on the centering bush 12 and placed on the converter lifter 28.

Next, as shown in FIG. 3, when the work cover 2 is lowered by an air cylinder (not shown), first, the seal rubber 19 is fitted into the inner diameter portion of the sleeve 14 in a loose state. The upper end surface of the sleeve 14 contacts the lower end surface of the protruding block 25. Further, when the work cover 2 is pushed down, the center shaft 29 also descends while supporting the torque converter 11 on the converter lifter 28,
As shown in FIG. 4, the peripheral wall 4 is in contact with the upper end surface of the table 27, and the seal 5 is crushed.
Is sealed against the outside air.

Thereafter, when the seal rubber 19 is pressed from above and below by operating the axial pressing means 20, the seal rubber 19 is pressed.
Expands the outer diameter in the form of a vial barrel, so that the inner diameter of the sleeve 14 and the outer diameter of the core member 9 are pressed against each other,
4 and the core member 9 are sealed.

The operation of the axial pressing means 20 will be described in detail. First, as shown in FIG.
When an air cylinder (not shown) on the 9 side is operated to raise the converter lifter 28 and push up the sleeve 14 of the torque converter 11, the upper end surface of the sleeve 14 is in contact with the lower end surface of the protruding block 25. Member 9
Is pushed up. Then, the lower washer 22 is attached to the nut 2
It is pushed up through 3. However, the upper washer 21
Is in contact with a stopper 24 provided on the lower end surface of the main body 6 and cannot move upward.
Since 9 is sandwiched between the upper and lower washers 21 and 22 and is pressed in the axial direction, its outer diameter expands and comes into contact with the inner diameter of the sleeve 14 to act as a seal.

Thereafter, a gas, for example, helium gas, which is easily detected by the gas detector through the fluid inlet 10a through the fluid passage 10, is press-fitted into the torque converter 11. At this time, if the welding portion of the torque converter 11 has a defect, the helium gas leaks and is discharged into the sealed gas chamber R, and furthermore, a gas detection (not shown) is performed through a ventilation hole 30 provided in the table 27. Since it is sent to the container, the presence or absence of a defect is detected. To remove the torque converter seal jig 1 from the sleeve 14 and further remove the torque converter 11 from the converter lifter 28,
Since the reverse operation described above may be performed, the description of the removing operation is omitted.

As described above, according to this embodiment, when the seal rubber 19 is inserted into or pulled out of the inner diameter portion of the sleeve 14, the seal rubber 19 is fitted in a loose state, so that the seal rubber 19 is not worn or cut off. As a result, the working efficiency is improved and the economic effect is obtained. In addition, since the sealing locations are the outer diameter of the seal rubber 19 and the inner diameter of the sleeve 14, and the inner diameter of the seal rubber 19 and the outer diameter of the lower part of the core member 9, the sealing area can be increased, so that there is no gas leakage and reliability. Is improved.

It should be noted that the present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, in the embodiment, the stopper 24 has a split ring shape and the core member is provided with the protruding block 25 which is aligned with the ring split portion. It may be an inward projection facing the division.

Further, in order to detect the presence or absence of a defect such as a welded portion of the torque converter 11, in the embodiment, the gas leaking out of the torque converter 11 is surrounded by a gas chamber R and detected by a gas detector. However, as described in the conventional example, for example, the entirety of the torque converter 11 including the table 27 may be immersed in the water tank to detect bubbles that come out.

[0025]

As described above, according to the present invention, a hollow cylindrical seal rubber whose outer diameter fits with the inner diameter portion of the sleeve of the torque converter is provided on the core member having the fluid passage for feeding the fluid into the torque converter. The seal rubber is pressed in the axial direction by the axial pressing means to expand its outer diameter and seal the inner diameter of the sleeve. The life and work efficiency are improved without cutting damage, and a high economic effect is obtained. In addition, since the outer diameter of the seal rubber is expanded by the axial pressing means to press the inner diameter of the sleeve, a large sealing area can be obtained, and there is no danger of fluid leakage, thereby improving reliability.

[Brief description of the drawings]

FIG. 1 is an axial sectional view showing an embodiment of the present invention.

FIG. 2 is an operation explanatory view of the embodiment.

FIG. 3 is an operation explanatory view of the embodiment.

FIG. 4 is an operation explanatory view of the embodiment.

FIG. 5 is an operation explanatory view of the embodiment.

FIG. 6 is an explanatory sectional view in the axial direction showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Torque converter sealing jig 2 Work cover 6 Body body 9 Core member 10 Fluid passage 10a Fluid introduction port 11 Torque converter 12 Centering bush 14 Sleeve 17 Cap 19 Seal rubber 20 Axial pressing means 21 Upper washer 22 Lower washer 24 Stopper 25 Projection Block 26 Slit 27 Table 28 Converter lifter 29 Center shaft 30 Vent hole 51 Torque converter seal jig 55 Table 56 Center shaft 57 Shaft support member 58 Fluid passage 58a Fluid inlet 59 Support shaft 60 Seal rubber R Gas chamber

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-151531 (JP, A) JP-A-62-73135 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01M 3/26 B25B 11/02

Claims (1)

(57) [Claims] 1. A sealing jig for feeding fluid into the inside of a torque converter to check the airtightness of the torque converter and preventing external leakage, the hollow jig having an outer diameter loosely fitting with an inner diameter of a sleeve of the torque converter. Seal rubber, a core member holding the seal rubber at the inner diameter portion and having a fluid passage at the axial center portion, a body body supporting the core member slidably in the axial direction, and an outer diameter of the seal rubber. and a axial pressing means for pressing the seal rubber in the axial direction in order to contact with the sleeve bore Te, the sealing rubber, the said core member and said body body
The core member is sandwiched between an end on the side to be inserted into the sleeve, and the core member protrudes to a position away from the end.
Wherein the axial pressing means, the butt of the open end of the sleeve
By pressing against the output block, the seal rubber is
Pressing between the main body and the end of the core member
A seal jig for a torque converter, characterized in that: