KR20010038122A - Apparatus for testing leak of an oil in a converter housing of an automatic transmission for a motor vehicle - Google Patents

Abstract

PURPOSE: A converter housing leakage examining apparatus of an automatic transmission is provided to simplify the construction of an upper jig with reducing the limitation on installation space and expand a sealing member without an extra power source. CONSTITUTION: A converter housing leakage examining apparatus of an automatic transmission includes a lower jig for securing a converter housing(10), an upper jig(120) for sealing an opened upper surface of the converter housing, a sealing jig(130) for sealing an axial hole of the converter housing, and an examining part examining leakage by injecting the air into the sealed space by the upper jig and the sealing jig, wherein the sealing jig includes a base(131) installed in the lower part of the axial hole, an operating element moving the base vertically, a frame(132) installed in the upper part of the base and forming a stepped pulley part securing a ring type sealing member(134) following the stepped pulley part, a pressing member(133) installed in the upper part of the frame to be movable vertically and supported by an elastic member(135) upwardly with a pressing piece for pressing the sealing member downward when descending, and a stopper(136) installed in the lower part of the upper jig and interfered by the pressing member for stopping the ascent of the pressing member, so that the sealing member is elongated to the outside to be closely adhered to the inner peripheral surface of the axial hole by the stepped part overcoming the elasticity of the pressing piece and the elastic member.

Description

Apparatus for testing leak of an oil in a converter housing of an automatic transmission for a motor vehicle}

The present invention relates to an automatic transmission for a vehicle, and more particularly, to a leak inspection apparatus for inspecting the leakage of the shaft of the converter housing in the converter housing manufacturing process of the automatic transmission.

The vehicle transmission is installed between the clutch and the propulsion shaft or the clutch and the deceleration gear device to transmit the power of the engine to the driving wheels by changing the rotational force and speed to match the driving condition of the vehicle. Automatic transmissions that perform automatically are widely used.

The automatic transmission is composed of a torque converter serving as a clutch, a planetary gear device for shifting, a multi-plate clutch for controlling the operation of the planetary gear device, a brake, and the like.

In particular, the torque converter is coupled to a converter housing coupled to a transmission case in which a planetary gear device, a multi-plate clutch, and the like are accommodated. As shown in FIG. 1, the converter housing includes a converter receiving part for receiving a torque converter on one side thereof, and the through hole 12 through which an input shaft connected from the torque converter to the gear device of the transmission case passes. ) Is formed. On the other side of the converter housing 10, a shaft hole 13 is formed, and a propulsion shaft connected to the driving wheel or the gear unit of the transmission case from the gear device of the transmission case through the shaft hole 14 formed in the shaft hole 13. It is installed to pass. The shaft hole portion 13 is provided with components such as various bearings for supporting the propulsion shaft.

In this converter housing 10, the shaft hole 13 is filled with oil for lubrication and cooling of various components such as bearings. Therefore, it is very important that the oil of the shaft hole 13 is not leaked to the outside through the shaft hole 14. Therefore, in the manufacturing process of the converter housing 10, the leakage through the shaft hole 14 is inspected.

Such a converter housing leak test apparatus is shown in FIG. 2.

The upper jig 20 is installed above the worktable 40 on which the converter housing 10 is placed. The upper jig 20 is in close contact with the converter housing 10 from the upper side to seal the open upper surface and the through hole 12 of the converter housing 10.

One side of the upper jig 20 is provided with a sealing jig 30. The sealing jig 30 has a body 31 extending downward of the upper jig 20, a sealing member 32 provided at the lower end of the body 31, and a body 31 as shown in FIG. An elevating cylinder 34 installed therein and extending through the end of the working rod and extending to the lower side of the body, and a pressing member 33 fixed to the rod end of the elevating cylinder 34. The lower end of the body 31 in which the sealing member 32 is installed is located inside the shaft hole 14 of the converter housing 10, and the sealing member 32 faces the inner circumferential surface of the shaft hole 14 at a predetermined interval. .

In addition, although not shown in the drawings, an air injector for injecting air into the interior space of the converter housing 10 enclosed by the upper jig 20 and the sealing jig 30, and a pressure gauge for detecting the internal pressure of the converter housing. , And an inspection unit having an indicator for determining whether the leak is detected by the detected pressure and notifying the operator of the result, is installed to partially penetrate the upper jig 20 on one side of the upper jig 20.

After the upper jig 20 is lowered to seal the open upper surface of the converter housing 10 and the through hole 12 of the converter accommodating portion 11, the lifting cylinder 34 of the sealing jig 30 is operated to load the rod. Is raised. Accordingly, the pressing member 33 coupled to the rod is also raised to press the sealing member 32. As a result, the sealing member 32 contracts in the vertical direction and extends in the horizontal direction, and as shown in FIG. 3B, the sealing member 32 is in close contact with the inner circumferential surface of the shaft hole 14. In this state, the inspection unit is operated to perform a leak inspection.

However, the conventional converter housing leak test apparatus as described above has the following disadvantages.

That is, in the related art, since the upper jig, the sealing jig, and the inspection unit are configured together at the upper side of the converter housing, there is a disadvantage in that the configuration is complicated and the installation space is restricted. In addition, since a separate power source (elevating cylinder) is used to expand the sealing member, there is a disadvantage in that the configuration becomes more complicated and the probability of failure is increased.

The present invention has been made in view of the above, and an object thereof is to provide a converter housing leakage inspection apparatus having a simpler configuration so as not to be restricted by an installation space.

Another object of the present invention is to provide a converter housing leakage inspection apparatus capable of inflating a sealing member without using a separate power source.

1 is a perspective view showing a converter housing of a typical vehicle automatic transmission.

2 is a cross-sectional view showing a conventional converter housing leakage inspection apparatus.

3A and 3B are sectional views showing the main parts of the sealing jig, which is an essential part of FIG. 2, and an operating state thereof.

Figure 4 is a cross-sectional view showing a converter housing leak test apparatus according to an embodiment of the present invention.

5A and 5B are principal part sectional views which show the sealing jig which is the principal part of FIG. 4, and its operation state.

Explanation of symbols on the main parts of the drawings

One ; Carrier bar 10; Converter housing

13; Axial hole 14; Axes

110; Lower jig 120; Upper jig

130; Sealing jig 132; frame

133; Pressing member 133a; Pressing piece

134; Sealing member 136; stopper

The converter housing leakage inspection apparatus of the automatic transmission according to the present invention for achieving the above object, the lower jig on which the converter housing is seated, the upper jig for sealing the open upper surface of the converter housing, and the shaft hole of the converter housing is sealed Sealing jig, and the inspection unit for checking the leakage by injecting air into the space sealed by the upper jig and the sealing jig, the sealing jig, the base installed in the lower side of the shaft hole, the operation for moving the base The step and the stepped portion provided on the upper side of the base and the ring-shaped sealing member made of elastic material are seated along its outer circumferential surface, and are installed on the upper side of the frame so as to be movable and elastically supported upward by the elastic member. The pressing member having a pressing piece for pressing the sealing member downward when descending, and the lower surface thereof It is installed under the upper jig so as to be close to the upper side of the shaft hole, and when the base is lifted by the operating means, the frame interferes with the pressing member and stops the rising of the pressing member so as to overcome the elasticity of the pressing member of the pressing member and the elastic member and continue to rise The stopper is characterized by having a stopper which extends outward so that the sealing member is in close contact with the inner circumferential surface of the shaft hole.

Another object of the above is achieved by the lower jig and the base being installed above the transport bar for transporting the converter housing, and the transport bar acting as an actuating means for moving the base up and down.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

The converter housing leakage inspection apparatus of the automatic transmission for a vehicle according to an embodiment of the present invention is shown in FIGS. 4 to 5b.

As shown in FIG. 4, the converter housing leak test apparatus according to an exemplary embodiment includes a lower jig 110, an upper jig 120, a sealing jig 130, and an inspection unit (not shown). have.

The converter housing 10 is seated on the lower jig 110 by being placed so that the periphery of the through hole 12 is supported by the mounting members 112 of the lower jig 110. The lower jig 110 has a base 114 connected to the plurality of seating members 112 through a plurality of seating members 112 and support rods 113 that support the periphery of the through hole 12 of the converter housing 10. And a plurality of springs 115 connected between the seating member 112 and the base 114 and inserted into the outer side of the support rod 113. Here, the support rod 113 is fixed to only one side of the mounting member 112 and the base 114, and only supports the spring 115 so as not to be displaced in the horizontal direction.

The upper jig 120 is installed so as to be movable in close contact with the converter housing 10 from the upper side of the converter housing 10. When the upper jig 120 is in close contact with the converter housing 10, the open upper surface and the through hole 12 of the converter housing 10 are sealed by the upper jig 120.

The inspection unit, when the converter housing 10 is sealed by the upper jig 120 and the sealing jig 130 described later, injects air into the sealed space and detects the pressure to determine whether there is a leak. Then, whether or not leakage is indicated through display means such as a lamp.

And, the sealing jig 130, which is the main component of the present invention, is shown in more detail in FIG. 5A. The base 131 is provided below the shaft hole 14, and the cylindrical frame 132 is fixed to the upper side of the base 131. A stepped stepped portion 132a is formed above the outer circumferential surface of the frame 132, and a ring shaped sealing member 134 made of an elastic material is provided on the stepped portion 132a. When the converter housing 10 is seated on the lower jig 110, the stepped portion 132a of the frame 132 is located inside the shaft hole 14 of the converter housing 1.

The pressing member 133 is inserted into and installed in the frame 132 from the upper side of the frame 132. This pressing member 133 is movable in the shaft hole 14 and is elastically supported upward by the spring 135 provided in the inside of the frame 132. The pressing member 133 has a pressing piece 133a formed around one side of the outer circumferential surface, and the pressing piece 133a is positioned above the sealing member 134 provided at the stepped portion 132a of the frame 132. Therefore, when the pressing member 133 is moved downward, the pressing piece 133a presses the sealing member 134.

A stopper 136 is provided above the shaft hole 14, that is, at the shaft hole 13 of the converter housing 10. The stopper 136 is fixed to the lower surface of the upper jig 110, and the lower surface of the stopper 136 faces the upper surface of the pressing member 133 at a predetermined interval.

In addition, an operating unit (not shown) for moving the base 131 up and down is provided below the base 131. However, as shown in FIG. 4, when the lower jig 110 and the sealing jig 130 are installed at one side of the upper surface of the transfer bar 1 for transporting the converter housing 10, the converter. Since the transfer bar 1, which can move forward and backward, and move up and down to transfer the housing 10 serves as an operation unit, a separate operation unit is not necessary.

The operation of the converter housing leakage inspection apparatus according to an embodiment of the present invention having such a configuration is as follows.

When the converter housing 10 is seated on the lower jig 110 installed above the transfer bar 1, the sealing member 134 of the sealing jig 130 is positioned inside the shaft hole 14, as shown in FIG. 5A. . At this time, since no external force acts on the pressing member 133 provided above the frame 132, the pressing member 133 is elastically supported upward by the elasticity of the spring 135. Thus, the sealing member 134 maintains its original shape.

When the transfer bar 1 is moved so that the converter housing 10 is positioned below the upper jig 120, the upper jig 120 is lowered to be in close contact with the converter housing 10. Accordingly, the open upper surface and the through hole 12 of the converter housing 10 are sealed by the upper jig 120.

Next, the transfer bar 1 rises a little further upwards. As the transfer bar 1 is raised, the sealing jig 130 installed above the transfer bar 1 is also raised. If the pressing member 133 interferes with the bottom surface of the stopper 136 while the sealing jig 130 is raised, the pressing member 136 is no longer raised. However, since the frame 132 and the base 131 continue to rise, the pressing piece 133a of the pressing member 133 approaches the stepped portion 132a of the frame 132 to press the sealing jig 134. . Accordingly, as shown in FIG. 5B, the sealing jig 134 is contracted in the vertical direction and extended in the horizontal direction to be in close contact with the inner circumferential surface of the shaft hole 14.

At this time, the lower jig 110 installed in the sealing jig 134 and the conveying bar 1 absorbs the lifting force of the conveying bar 1 by the contraction of the plurality of springs 115. If the lower jig 110 and the sealing jig 130 are not installed on the transfer bar 1 and are installed on a separate work table, a separate operating part such as a cylinder is operated to raise the sealing jig 130. .

As described above, after the shaft hole 13 of the converter housing 10 is sealed by the upper jig 120 and the sealing jig 130, the inspection unit is operated to perform a leak test.

As described above, since the sealing jig is installed below the shaft hole of the converter housing, the configuration of the upper jig side is simplified and the restriction on the installation space is reduced. In addition, the present invention also has the advantage that since the sealing jig is operated by the raising of the transfer bar, a separate power source for inflating the sealing member is not necessary, and thus can be configured more simply.

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains can vary as many without departing from the spirit of the technical idea of the present invention described in the claims below. Modifications may be made.

Claims (2)

A lower jig in which the converter housing is seated, an upper jig for sealing the open upper surface of the converter housing, a sealing jig for sealing the shaft hole of the converter housing, and air into a space enclosed by the upper jig and the sealing jig. In the converter housing leakage inspection device of an automatic transmission comprising a test unit for inspecting the leakage by injecting the leak, the sealing jig, the base is installed in the lower side of the shaft hole, the operation means for moving the base and the base of the A stepped portion provided on an upper side and seated with a ring-shaped sealing member made of an elastic material is formed along the outer circumferential surface thereof, and is installed on the upper side of the frame so as to be movable, and elastically supported upward by the elastic member, A press member having a press piece for pressurizing the member downward; It is installed below the upper jig so as to be close to the upper side of the shaft hole, and when the base is lifted by the operating means, it interferes with the pressing member and stops the rising of the pressing member so that the pressing piece of the pressing member and the elastic member are stopped. And a stopper for allowing the sealing member to extend outward to closely contact the inner circumferential surface of the shaft hole by the stepped portion of the frame that continues to rise and overcomes elasticity. The vehicle automatic transmission according to claim 1, wherein the lower jig and the base are installed above the transport bar for transporting the converter housing, and the transport bar serves as an operation means for moving the base up and down. Converter housing leak check device.