JPH059563Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a control shaft support structure for a manual valve used in an automatic transmission.

Conventional technology and its problems Conventionally, when operating a manual valve, a control shaft connected to a select lever is rotated, and this rotation operates the spool in the axial direction via the lever, and the P, R, N ，
It is designed to switch between each position such as D and L.

Both ends of the above control shaft are rotatably supported by a casing such as a transmission case, and the valve body of the manual valve is attached to the casing separately from the control shaft, so there is no possibility of errors in the installation of the valve body to the casing. As a result, variations occur in the positional relationship between the manual valve and the control shaft, and there is a risk that the pin at the tip of the control shaft will not engage properly with the spool. In addition, when assembling manual valves, the valve body and control shaft are assembled to the casing separately, so it is necessary to align the valve body, control shaft, and casing, which improves work efficiency. There was a problem that it was bad.

Purpose of the invention The present invention was devised in view of these conventional problems, and its purpose is to create a manual valve that can always maintain a constant positional relationship between the manual valve and the control shaft and that has excellent assembly workability. An object of the present invention is to provide a control shaft support structure.

Structure of the Invention In order to achieve the above object, the present invention provides a manual valve in which a spool is actuated in the axial direction via a lever by rotation of a control shaft, and the valve is sandwiched between multiple valve bodies. A body plate is disposed perpendicularly to the control shaft, the valve body plate is provided with an outwardly protruding protrusion, a U-shaped notch is formed at the side edge of the protrusion, and a lever fixing portion of the control shaft is provided. A circumferential groove that rotatably fits into the notch is formed nearby, and a bearing boss having an insertion hole through which the control shaft is rotatably inserted is integrally formed in the valve body holding the spool, and the valve body plate A protrusion for sandwiching the protrusion of the valve body plate with the end face of the bearing boss is integrally provided on another valve body that faces the valve body with the valve body in between, and a control shaft is attached to the protrusion. A U-shaped recess is formed for insertion.

DESCRIPTION OF EMBODIMENTS The drawings show an example of the present invention, in which 1 shows a casing such as a transmission case, 2 a manual valve,
3 is a control shaft.

Manual valve 2 has two valve bodies 2
A valve body plate 4 is sandwiched and integrated between a and 2b and fixed to the casing 1,
A spool 5 for switching oil passages is disposed on one valve body 2b so as to be movable in a direction perpendicular to the plane of the drawing.

Control shaft 3 is located in hole 1 of casing 1
One end is rotatably supported by casing 1
The tip portion protruding from is connected to a select lever (not shown) via a link 6 or the like. A lever 7 is connected to the other end of the control shaft 3, and a pin 8 fixed to the tip of the lever 7 connects the collars 5a, 5 of the spool 5 as shown in FIG.
b. Therefore, when the control shaft 3 rotates in conjunction with the select lever, the pin 8 operates the spool 5 in the axial direction.
Each position such as P, R, N, and D is switched. The lever 7 also serves as a detent plate, and a plurality of notches 7a are provided on the outer periphery of the lever 7, and a lock ball 9 attached to the valve body 2b is elastically fitted into the notches 7a. , N, D, etc. can be held.

As shown in FIG. 3, one of the valve bodies 2a is integrally formed with a protrusion 13 that protrudes in the direction of the control shaft 3, and this protrusion 13 has a U-shaped recess 10 through which the control shaft 3 is inserted. It is formed. Furthermore, a protrusion 14 having a shape similar to the protrusion 13 of the valve body 2a is protruded from the side edge of the valve body plate 4, which is disposed perpendicularly to the control shaft 3, as shown in FIG. A U-shaped notch 4a is formed on the side edge of this protrusion 14 and rotatably fits into a circumferential groove 3a formed near the fixing portion of the lever 7 of the control shaft 3. Depending on the case, the control shaft 3 is axially positioned. Furthermore, the other valve body 2b has a control shaft 3 as shown in FIG.
An insertion hole 1 into which the lever 7 near the fixing part is inserted.
The control shaft 3 is rotatably supported at both ends by the hole 1a of the casing 1 and the insertion hole 11 of the valve body 2b. As mentioned above, since the protrusion 14 of the valve body plate 4 is sandwiched between the protrusion 13 of one valve body 2a and the bearing boss 15 of the other valve body 2b, the protrusion 14 of the valve body plate 4 is Reinforced on both sides. Therefore, even if an external force is applied to the control shaft 3 in the left-right direction in FIG. 1, the valve body plate 4 is prevented from being bent or deformed, and the positioning accuracy of the control shaft 3 is improved.

In addition, in FIG. 2, 12 is a cam for the parking lock, and this cam 12 is connected to the lever 7.
It moves back and forth as the gear rotates, and the lock pole is pushed up and engaged with the gear, especially in the P range.

In the present invention, as described above, the other end of the control shaft 3 is supported by the insertion hole 11 of the valve body 2b, so that the control shaft 3 is positioned in the direction of inclination with respect to the valve body 2b. Misalignment between the provided pin 8 and the spool 5 held by the valve body 2b is eliminated. Therefore, poor engagement between the pin 8 and the spool 5 can be eliminated, and the oil passage switching position of the spool 5 can be set with high precision. At the same time, the positional relationship between the lever 7 and the valve body 2b becomes constant, so there is no misalignment in the fitting position between the notch 7a of the lever 7 and the lock ball 9, and the detent function can be operated reliably.

In addition, in the past, both ends of the control shaft were supported by the casing, so the control shaft and valve body had to be assembled to the casing separately and aligned, which made assembly work easier. However, since the valve body 2b has an insertion hole 11 in the present invention, the control shaft 3 can be integrated by inserting it into the insertion hole 11, and then the control shaft 3 can be inserted into the casing 1. into the hole 1a of the valve body 2.
If they are fixed to the casing 1, there is no need for positioning, and the assembly work efficiency is greatly improved.

In addition, if the circumferential groove 3a of the control shaft 3 is fitted into the notch 4a of the valve body plate 4 as in the above embodiment, the control shaft 3 is positioned in the axial direction with respect to the valve body 2. Separate parts such as a snap spring for positioning the control shaft 3 are no longer required, and the control shaft 3 and manual valve 2 are maintained in a constant positional relationship in the axial direction. The positional relationship between the lock ball 7 and the lock ball 9 can be set with even higher accuracy.

Also, the valve body 2b holding the spool 5
an insertion hole 11 that supports the control shaft 3;
, the positional relationship between the spool 5 and the control shaft 3 can be set with high precision, and this also allows the positional relationship between the pin 8 fixed to the control shaft 3 via the lever 7 and the spool 5 to be set with high precision This means that it can be set.

Effects of the invention As is clear from the above explanation, according to the invention, the vicinity of the lever fixing part of the control shaft is supported by the insertion hole of the valve body holding the spool,
In addition, since the circumferential groove of the control shaft is fitted into the U-shaped notch of the valve body plate, the positional relationship between the control shaft and the valve body is constant, and there is no possibility of poor engagement between the pin at the tip of the control shaft and the spool provided on the valve body. can be resolved. In addition, when assembling a manual valve, if the control shaft and valve body are attached to the casing integrally with the control shaft supported by the valve body, the three parts of the control shaft, valve body, and casing as in the past can be assembled. There is no need for manual alignment, which simplifies assembly work.

[Brief explanation of the drawing]

Fig. 1 is a structural diagram of an example of a manual valve having a control shaft support structure according to the present invention, Fig. 2 is a right side view of Fig. 1, and Figs. 3 to 5 are the - line of Fig. 1, respectively. - line, -
It is a line cut end view. 1... Casing, 1a... Hole, 2... Manual valve, 2a, 2b... Valve body, 3...
...Control shaft, 4...Valve body plate, 5...Spool, 7...Lever, 8...
Pin, 11...insertion hole.

Claims (1)

[Claims for Utility Model Registration] In a manual valve in which a spool is actuated in the axial direction via a lever by rotation of a control shaft, a valve body plate 4 sandwiched between a plurality of valve bodies 2a and 2b is provided. A protrusion 14 is provided in the valve body plate 4 which is disposed perpendicularly to the control shaft 3 and protrudes outward.
While forming a U-shaped notch 4a on the side edge of the
A circumferential groove 3a that rotatably fits into the notch 4a near the lever 7 fixing part of the control shaft 3
On the other hand, a bearing boss 15 having an insertion hole 11 through which the control shaft 3 is rotatably inserted is integrally formed on the valve body 2b holding the spool 5, and the valve body 2b is connected to the valve body 2b with the valve body plate 4 in between. A protrusion 13 for sandwiching the protrusion 14 of the valve body plate 4 with the end face of the bearing boss 15 is integrally provided on another valve body 2a facing the valve body 2b, and the control shaft 3 is attached to the protrusion 13. U-shaped recess 1 for inserting
A control shaft support structure for a manual valve, characterized by forming a 0.