JP2005286242A - Mounting structure of solenoid wiring plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a solenoid wiring plate from bending using a low cost simple structure. <P>SOLUTION: A wiring plate 40 is fixed to a valve body 30 with a group of bolts 47, at a location separating from a side portion in which a connector terminal 42 is arranged, and the side portion, in which the connector terminal of the wiring plate is arranged, is supported by integrally forming a stopper 36 contacting with a lower surface of the wiring plate 40 at a location corresponding to the side portion, in which the connector terminal of the wiring plate is arranged. This can prevent the wiring plate from bending, even if a location near the above-mentioned side portion is not made to be fixed further with a second group of bolts. Cost can be reduced, by integrally forming the stopper valve with the valve body 30 and by decreasing fixing points fixed with the bolts simultaneously. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mounting structure for a solenoid wiring board in a hydraulic control device for an automatic transmission.

  The shift of the automatic transmission is executed by actuating a fastening element corresponding to a desired shift stage among a plurality of frictional engagement elements such as a clutch and a brake. The engagement element is activated / deactivated by supplying / discharging hydraulic pressure to / from the engagement element. The supply / discharge speed of this hydraulic pressure is adjusted by the solenoid to control the engagement / release operation of the friction clutch, The occurrence of this is reduced.

FIG. 5 shows an example of such an automatic transmission.
The power train of the automatic transmission is configured by connecting a speed change mechanism 5 to the engine 1 via a torque converter 2. The transmission mechanism 5 includes two sets of planetary gears 3 and 4 whose power transmission paths are switched by a fastening element such as a clutch or a brake. An electronic control device 7 mainly including a microcomputer for controlling the hydraulic control device 6 for controlling the hydraulic pressure for executing the fastening / release of the fastening element is provided.

  The speed change mechanism 5 includes planetary gears 3 and 4, reverse clutch R / C, high clutch H / C, low clutch L / C, low one-way clutch L / OWC, 2-4 brake 2-4 / B, and low clutch. By combining the reverse brake L & R / B and engaging and releasing the engagement elements of these clutches or brakes in a predetermined combination, for example, four forward speeds and one reverse speed are obtained.

The hydraulic control device 6 is configured by arranging a control valve, a pressure regulating valve, a switching valve and the like in an oil passage formed in the valve body, and some of these valves are solenoids 10 (10a, 10b, 10c). 10d, 10e, 10f).
The solenoids 10 a to 10 f are controlled by the electronic control device 7.
The electronic control unit 7 receives signals from various sensors, for example, a throttle sensor 20, a turbine rotation sensor 21, an output shaft rotation sensor 22, an inhibitor switch 23, a hydraulic switch group 24, an oil temperature sensor 25, etc. The type, its timing, the hydraulic pressure, etc. are calculated, and the drive current is supplied to the solenoids 10a to 10f.
A similar automatic transmission is disclosed in Japanese Patent Laid-Open No. 2003-97688.
JP 2003-97688 A

The solenoids 10a to 10f are attached to a valve body, and a wiring board is usually used for wiring to the solenoid.
FIG. 6 shows an example of mounting a conventional wiring board. Solenoids 10 (10a to 10f) are arranged on a preset solenoid mounting portion 32 on the valve body 30 ′, and each solenoid 10 is fixed to the valve body 30 ′ with a bolt 18 at a flange portion 14 extending laterally from the solenoid body 12. Has been.
The solenoid 10 has a connector 16 on a side substantially opposite to the flange portion 14 of the solenoid body 12, and the connector 16 is connected to the connector terminal 42 of the wiring board 40 '. The wiring 44 from the connector terminal 42 extends on the wiring board 40 ′ toward the collective connector 46 and others.

Here, when the solenoid 10 is attached, the wiring board 40 'is attached on the valve body 30' in advance. Here, the wiring board 40 ′ is substantially parallel to the line LL that is parallel to the side portion where the connector terminal 42 is disposed and passes through substantially the middle in the width direction thereof, and the first bolt (group) 47 (47 a, 47 a, 47b, 47c).
In this way, as shown in FIG. 7, in a state where the wiring board 40 ′ is fixed at a predetermined position of the valve body 30 ′, the connector terminal 42 of the wiring board is connected to the solenoid 10 disposed in the solenoid mounting portion 32. It is set to match the connector 16 and rises upward from the side of the wiring board 40 '.

  In this state, in the assembly process, a group of solenoid main bodies 12 are grasped by a robot (not shown), positioned and pushed down from above to each solenoid mounting portion 32, and each flange portion 14 is fixed to the flange fixing portion 34 of the valve body with bolts 18. . At the time of this positioning, the connector 16 is simultaneously inserted into the connector terminal 42 of the wiring board 40 ′, and the connector 16 and the connector terminal 42 are connected to each other.

  By the way, when this connector is connected, a downward pressing force is applied to the side portion of the wiring board 40 ′ on which the connector terminal 42 is disposed because of the contact resistance between the connector 16 and the connector terminal 42. For this reason, only by fixing with the first bolts 47 (47a, 47b, 47c), as shown in FIG. 8, the wiring board 40 'is bent, and a reliable connection between the connector 16 and the connector terminal 42 is ensured. Can not.

Conventionally, as a countermeasure, the thickness of the wiring board 40 ′ itself is increased to increase the rigidity, and as shown in FIGS. 6 and 7, the first bolt 47 (47a, 47b, 47c) is used as well as a connector terminal. The wiring board 40 'is fixed by the second bolt (group) 48 (48a, 48b, 48c, 48d, 48e) at a position close to the side where the 42 is disposed, and the bending of the wiring board 40' is prevented. Like that.

However, in the above configuration, in order to fix the wiring board with the second bolts 48, a large number of boss portions 37 that require a relatively large area must be formed on the valve body 30 ′, and the space can be secured. It is difficult, and there is a problem that the cost increases due to an increase in parts and the number of mounting steps due to the additional bolts 48a, 48b, 48c, 48d, 48e.
Accordingly, an object of the present invention is to provide a mounting structure for a solenoid wiring board that prevents the wiring board from being bent at a low cost with a simple structure.

  For this reason, the present invention provides a wiring board mounting structure that includes a connector terminal that is connected to a solenoid connector and is attached to a valve body of an automatic transmission, and the wiring board is positioned away from the side where the connector terminal is disposed. In addition to fixing to the valve body, a stopper that contacts the lower surface of the wiring board is formed on the valve body at a position corresponding to the side where the connector terminal of the wiring board is arranged, and the connector terminal of the wiring board is arranged. It was configured to support the sides.

  According to the present invention, the stopper that contacts the lower surface of the wiring board is formed on the valve body corresponding to the side where the connector terminal of the wiring board is disposed, and supports the side, so that it is close to the side. Even if the wiring board is not further fixed with the second bolt at the position, bending of the wiring board is prevented.

Hereinafter, embodiments of the present invention will be described by way of examples.
FIG. 1 is a plan view showing the first embodiment, and FIG. 2 is a cross-sectional view taken along line AA in FIG.
Solenoids 10 (10a to 10f) are arranged on the solenoid mounting portion 32 of the valve body 30, and the flange portion 14 of each solenoid is fixed to the flange fixing portion 34 of the valve body 30 with bolts 18. The solenoid mounting portion 32 and the flange fixing portion 34 rise from the base surface S of the valve body 30.
Further, a wiring board 40 is attached to the valve body 30 at substantially the same height as the solenoid attachment portion 32. The wiring board 40 includes a connector terminal 42 that is aligned with the connector 16 of the solenoid 10 disposed in the solenoid mounting portion 32.

The wiring board 40 is connected to the valve by a first bolt 47 (47a, 47b, 47c) substantially along a line LL that is parallel to the side where the connector terminal 42 is disposed and passes through substantially the middle in the width direction. It is fixed to a boss portion 37 formed on the body 30. The boss portion 37 also rises from the base surface S.
The above configuration is the same as the conventional example shown in FIGS.

Next, in the present embodiment, as shown in FIG. 2 in particular, rib-like stoppers 36 that extend toward the wiring board 40 rise from the base surface S at the side of each solenoid mounting portion 32 of the valve body 30. As shown in FIG. 3, the stopper 36 is connected to the side wall of the solenoid mounting portion 32, and extends to below the side portion where the connector terminal 42 of the wiring board 40 is disposed.
The height of the stopper 36 is set to the same height as the boss portion 37. Therefore, as shown in FIG. 2 again, the upper surface of the stopper 36 is aligned with the lower surface of the wiring board 40 fixed to the boss portion 37. In contact therewith, the side portion on which the connector terminal 42 of the wiring board 40 is disposed is supported from below.
Other configurations are the same as those of the conventional example shown in FIGS.

When the solenoid 10 is attached, the wiring board 40 is attached to the valve body 30 first. That is, the side where the connector terminal 42 of the wiring board 40 is placed is placed on the stopper 36 and is fixed to the boss 37 by the bolt 47. In this state, the connector terminal 42 rises upward in the vicinity of the solenoid mounting portion 32.

  Next, the solenoid body 12 is positioned and pushed down from above to each solenoid mounting portion 32, and each flange portion 14 is fixed to the flange fixing portion 34 of the valve body 30 with the bolt 18. During this positioning, the connector 16 of the solenoid 10 is simultaneously inserted into the connector terminal 42 of the wiring board 40. At this time, since the side portion of the wiring board 40 on which the connector terminal 42 is arranged is supported from below by the stopper 36, the phenomenon that the wiring board 40 is bent and the connector terminal 42 escapes does not occur. The connector terminals 42 are securely connected to each other as the solenoid body 12 is pushed down.

In this embodiment, the wiring board 40 is separated from the side portion where the connector terminal 42 is disposed, and the valve 47 is provided by a bolt 47 substantially along the line LL passing through substantially the middle in the width direction of the wiring board. In addition to being fixed to the body 30, the valve body 30 is integrally formed with a stopper 36 that contacts the lower surface of the wiring board 40 at a position corresponding to the side where the connector terminal 42 of the wiring board 40 is disposed. Since the side where the connector terminal 42 of the board 40 is disposed is supported, even if the wiring board 40 is not further fixed with a bolt group at a position close to the side, bending of the wiring board 40 is prevented, When the solenoid 10 is attached to the valve body 30, the connector 16 is smoothly and reliably connected to the connector terminal 42 of the wiring board 40.
Further, since the stopper 36 is formed integrally with the valve body 30, the structure is simple, and the cost can be reduced in combination with the reduction of the fixing points by the bolts.

Next, FIG. 4 shows a second embodiment.
The valve body 30A does not have the rib-like stopper 36 as in the previous embodiment on the side of each solenoid mounting portion 32. Instead, a stopper 36A integrated with the wiring board 40A is suspended from the lower surface of the wiring board 40A at a position corresponding to the side where the connector terminal 42 is disposed. The lower end of the stopper 36A is in contact with the upper surface of the base surface S of the valve body 30A in the vicinity of the side portion of the solenoid mounting portion 32, and supports the side portion of the wiring board 40A on which the connector terminals are arranged. The height from the base surface S is maintained in a normal state.
The wiring board 40A is fixed to the valve body 30A with bolts 47 as in the previous embodiment, at a portion spaced from the side where the connector terminal 42 is disposed.
Other configurations are the same as in the previous embodiment.

When attaching the solenoid 10, the wiring board 40A is first attached to the valve body 30A. In this state, the connector terminal 42 of the wiring board 40A rises upward in the vicinity of the solenoid mounting portion 32, and the side portion of the wiring board 40 on which the connector terminal 42 is disposed is supported from below by the stopper 36A. .
Next, the solenoid body 12 is positioned and pushed down from above to each solenoid mounting portion 32, and each flange portion 14 is fixed to the flange fixing portion 34 of the valve body 30 </ b> A with the bolt 18. At the time of this positioning, the connector 16 of the solenoid 10 is simultaneously inserted into the connector terminal 42 of the wiring board 40A, but the side portion of the wiring board 40 on which the connector terminal 42 is disposed is supported from below by the stopper 36A. The phenomenon that the wiring board 40A bends and the connector terminal 42 escapes does not occur, and the connector 16 and the connector terminal 42 are securely connected to each other as the solenoid body 12 is pushed down.

The second embodiment is configured as described above, and the stopper 36A is suspended from the lower surface at the position corresponding to the side portion where the connector terminal 42 of the wiring board 40A is disposed, and the lower end thereof is the base surface S of the valve body 30A. Since the side where the connector terminal 42 of the wiring board 40A is disposed is supported by contacting the upper surface of the wiring board 40A, the wiring board 40A does not need to be further fixed with a bolt group at a position close to the side. As in the first embodiment, the wiring board 40A is prevented from being bent, and when the solenoid 10 is attached to the valve body 30A, the connector 16 is smoothly and reliably connected to the connector terminal 42 of the wiring board 40A.
Since the stopper 36A is formed integrally with the wiring board 40A, the configuration is simple, and the cost can be reduced in combination with the reduction of the fixing points by the bolts.

  In each embodiment, the wiring board 40 is fixed to the valve body 30 by the bolts 47 along the line LL that passes through substantially the middle in the width direction. It can be fixed at an appropriate position according to the shape of the valve body and the state of the valve body 30.

It is a top view which shows the 1st Example of this invention. It is an AA section sectional view in FIG. It is a top view of the valve body which shows the shape of a stopper. It is sectional drawing equivalent to FIG. 2 which shows a 2nd Example. It is a figure showing the whole automatic transmission composition to which the invention is applied. It is a top view which shows the example of attachment of the conventional wiring board. It is sectional drawing which shows a prior art example. It is explanatory drawing which shows the conventional problem.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Torque converter 2-4 / B 2-4 Brake 3, 4 Planetary gear 5 Transmission mechanism 6 Hydraulic control device 7 Electronic control device 10, 10a, 10b, 10c, 10d, 10e, 10f Solenoid 14 Flange part 16 Connector 18 , 47, 47a, 47b, 47c Bolt 20 Throttle sensor 21 Turbine rotation sensor 22 Output shaft rotation sensor 23 Inhibitor switch 24 Hydraulic switch group 25 Oil temperature sensor 30, 30A Valve body 32 Solenoid mounting portion 34 Flange fixing portion 36, 36A Stopper 37 Boss 40, 40A Wiring board 42 Connector terminal H / C High clutch L / C Low clutch L / OWC Low one-way clutch L & R / B Low and reverse brake R / C Reverse clutch S Base surface

Claims (4)

A mounting structure for a wiring board that is attached to a valve body of an automatic transmission together with a solenoid, has a connector terminal that is connected to a connector of the solenoid, and guides and holds wiring from the connector terminal,
The wiring board is fixed to the valve body at a position away from the side where the connector terminal is arranged,
In the valve body, a stopper that contacts the lower surface of the wiring board is formed at a position corresponding to the side where the connector terminal of the wiring board is arranged to support the side where the connector terminal of the wiring board is arranged. A structure for mounting a solenoid wiring board, characterized in that it is configured as described above. The valve body has a solenoid mounting portion to which the solenoid is mounted raised from a base surface, and a boss portion that fixes the wiring board is raised from the base surface,
2. The solenoid wiring board mounting structure according to claim 1, wherein the stopper rises from a base surface in a rib shape extending toward the wiring board on a side wall of the solenoid mounting portion. A mounting structure for a wiring board that is attached to a valve body of an automatic transmission together with a solenoid, has a connector terminal that is connected to a connector of the solenoid, and guides and holds wiring from the connector terminal,
The wiring board is fixed to the valve body at a position away from the side where the connector terminal is arranged,
The wiring board has a stopper formed on the lower surface of the wiring board at a position corresponding to a side portion where the connector terminal of the wiring board is disposed, and is provided on the lower surface of the wiring board. A mounting structure for a solenoid wiring board, characterized in that it is configured to support a side portion where terminals are arranged. The valve body starts up a solenoid mounting portion to which the solenoid is mounted from the base surface,
4. The solenoid wiring board mounting structure according to claim 3, wherein the stopper is suspended from the wiring board in the vicinity of the side wall of the solenoid mounting portion.

Images