JPH0474573B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic transmission inhibitor switch adjustment mechanism.

Inhibitor switches used in automatic transmissions in automobiles, etc. are switches that perform switching operations in synchronization with the manual valve that controls the hydraulic pressure of the automatic transmission. It controls the lighting etc. of
Furthermore, an indicator switch is incorporated into the inhibitor switch to indicate each selection position by lighting it to the driver. Therefore, the inhibitor switch must be operated in precise synchronization with the manual valve.

By the way, although the mounting structure of the inhibitor switch 10 according to FIG. 1 is shown, this inhibitor switch 10 is rotatably attached to the inhibitor switch main body 11 having a built-in switching mechanism (not shown) and the above-mentioned inhibitor switch main body 11. Switch lever 1 that operates the switching mechanism
2, the centering boss 13 protruding from the back side of the inhibitor switch body 11 is rotatably fitted into the fitting hole 21 of the transmission case 20, and the outer diameter A mounting portion 14 projecting in the direction is attached to the mission case 20 via a bolt 1 serving as a fixing means. At this time, the bolt insertion hole 14a of the mounting portion 14 is formed into a long hole extending in the circumferential direction centering on the centering boss 13 as shown in FIG. 11 is rotatable about the centering boss 13 within the longitudinal axis range of the bolt insertion hole 14a. On the other hand, 30 in Figure 1 is a select plate,
This select plate 30 has one end fixed to the outer end (left side in the figure) of the shaft 2 which is rotatably supported by penetrating the transmission case 20 from inside and outside, and the other end is attached to a control lever (not shown). (Lever that the driver grasps to change the select position)
The shaft 2 is connected to the shaft 2 via a wire or rod, and rotates about the shaft 2 together with the shaft 2 when the control lever is operated. Furthermore, a manual plate 40 and a check plate 3 are provided at the inner end of the shaft 2 (on the right side in the figure).
is fixed, and both plates 40, 3 rotate as the select plate 30 rotates, so that the manual plate 40 operates the manual valve 50, and the check plate 3 operates the throttle cable 4. ing.

By the way, the switch lever 12 of the inhibitor switch 10 is located at its free end (lower end in the figure).
A bifurcated engaging portion 15 is formed in the engaging portion 1 .
5 is engaged with a pin 31 as a connecting member protruding from the select plate 30, and the amount of rotation of the select plate 30 is transmitted to the switch lever 12 via the pin 31, thereby operating the switching mechanism. It is set to work. At this time, it is necessary to adjust the specific select position of the select plate 30 and the specific select position of the inhibitor switch 10 to match. Therefore, as shown in FIG. 3, a conventional inhibitor switch adjustment mechanism 60 has a through hole 61 formed in the switch lever 12, and a switching mechanism and the select plate 30 are formed in the inhibitor switch main body 11. A recess 62 is formed so as to be in line with the through hole 61 at a specific select position, for example, a neutral position, and the inhibitor switch 10
At the time of installation, the inhibitor switch 10 was synchronized with the select position by fixing the inhibitor switch main body 11 with the bolt 1 with the straight rod 63 inserted into the recess 62 from the through hole 61. In addition, Fig. 3 shows shaft 2.
An example is shown in which the position is above the inhibitor switch body 11.

However, in the conventional inhibitor switch adjustment mechanism 60, an error occurs in the rotational position of the select plate 30, which is a reference for determining the mounting position of the inhibitor switch body 11, for reasons described later. That is, the select plate 30 is integrally connected to a manual plate 40 that operates the manual valve 50 via the shaft 2, and when this combined body is attached to the transmission case 20, an installation error occurs, and the manual As shown in FIG. 4, the plate 40 is formed with a concave and convex portion 41 for detent checking, and a check ball biased by a spring 42 inserted into a fitting hole 45 is formed in this concave and convex portion 41. 43 constitutes a detent check 44, and the manual valve 5
0, the position of the plunger 51, that is, the hydraulic pressure generation position, is determined.However, since the manual plate 40 is a pre-molded product due to cost reasons, there is a slight deviation in the formation position of the uneven portion 41, and this Errors will also occur in some parts. Furthermore, an error occurs in the urging direction of the check ball 43 constituting the detent check 44, that is, in the direction of the center of the fitting hole 45 that accommodates the check ball 43. In particular, when the check ball 43 is used, the spring 42 Since the formation of the fitting hole 45 involves a significant increase in cost, it is conceivable to use a leaf spring (not shown) instead. This results in a large error in the length of the free end of the leaf spring. Therefore, there is a possibility that this error is combined with the aforementioned formation error of the manual plate 40 and installation error of the select plate 30, etc., resulting in a large error. A deviation occurs between the stopped position of the rotated select plate 30 and the center position of hydraulic pressure generation corresponding to the predetermined select position of the manual valve 50. Then, as described above, the inhibitor switch 10 is synchronized with reference to the select plate 30 which is shifted from the hydraulic pressure generation position of the manual valve 50.
This results in a deviation between the detection range of the predetermined select position of the inhibitor switch 10 and the actual hydraulic pressure generation range of the manual valve 50 for the predetermined select position. In this state, even if neutral is lit and displayed by the inhibitor switch 10, the manual valve 50 that actually generates hydraulic pressure may generate hydraulic pressure at position D or R, which is near the neutral position. There was a problem that there was.

In view of these conventional problems, the present invention was made by focusing on the fact that the select plate and the switch lever are in an interlocking relationship through a pin and an engaging part, but when the manual valve is in a predetermined interlocking position, the manual valve is in a neutral state. When adjusting the installation position of the inhibitor switch, with the select plate and switch lever rotated to the specified interlocking position, the select plate can be used to identify the manual valve regardless of the date check position of the manual plate. The inhibitor switch is rotated to a hydraulic pressure generation position corresponding to the select position of the select plate, and the inhibitor switch is adjusted to the specific select position using the select plate at this position as a reference. It is an object of the present invention to provide an inhibitor switch adjustment mechanism that can reliably synchronize the lighting position of the inhibitor switch and the hydraulic pressure generating position of a manual valve regardless of errors.

In order to achieve this object, the present invention rotates the inhibitor switch main body to a detection position corresponding to a specific select position of the select plate while the select plate and the switch lever are rotated to a predetermined interlocking position, In this state, the positioning adjustment means provided on each of the select plate, switch lever, and inhibitor switch body are formed so as to be in a straight line.

Therefore, in the present invention, with this configuration,
When assembling the inhibitor switch, the select plate, the switch lever, and the inhibitor switch body should be assembled by fixing the inhibitor switch body at a position where the adjustment means for positioning formed on each of the select plate, switch lever, and inhibitor switch body are arranged in a straight line. By fixing it, the select detection position by the inhibitor switch and the hydraulic pressure generation position generated by the manual valve will be reliably synchronized.
This has an excellent effect in that there is no erroneous display caused by the inhibitor switch, and safety can be significantly improved.

An embodiment of the present invention will be described below with reference to FIGS. 5, 6, and 7.

Incidentally, in explaining this embodiment, the same parts as those in the conventional structure will be described with the same reference numerals.

That is, one embodiment of the present invention has the same components as shown in FIG. The inhibitor switch body 11 is rotatably mounted,
A pin 31 as a connecting member protruding from a select plate 30 is engaged with an engaging portion 15 of a switch lever 12 rotatably attached to the inhibitor switch body 11. By the way, in this embodiment, the detent check 44a of the manual plate 40 is connected from the select plate 30 to the manual valve 50 via the shaft 2 and the manual plate 40.
Since this is not used to determine the mounting device for the inhibitor switch body 11, it has a simple structure using a leaf spring 46 as shown in FIG. That is, the base end of the leaf spring 46 is fixed to the mission case 20 via the bolt 5, and a roller 43a is rotatably attached to the distal end of the leaf spring 46. It is brought into contact with the uneven portion 41. At this time, the leaf spring 46 is appropriately bent so that the roller 43a presses the uneven portion 41 toward the center of the manual plate 40, that is, toward the center of the shaft 2.

In this embodiment, with the select plate 30 and the switch lever 12 rotated to a predetermined interlocking position, the select plate 30 can be manually operated regardless of the check position of the detent check 44a. Set the rotation of the valve 50 to a specific select position (neutral position),
In this state, the inhibitor switch main body 11 is rotated to a detection position corresponding to a specific selection position (neutral position) of the selection plate 30. In this state, select plate 30, switch lever 12 and inhibitor switch body 11
The adjustment mechanism 60a is formed by forming in advance an adjusting means for positioning at a position that connects the adjustment mechanism 60a in a straight line.
has been configured. That is, as shown in FIG. 6, the adjustment means includes through holes 64 and 65 in the select plate 30 and the switch lever 12, respectively.
is provided, and the inhibitor switch body 11
A recess 66 is provided on a line extending from the through holes 64 and 65. The through holes 64 and 65 are elongated in the radial direction with respect to the center of rotation of the select plate 30 and the center of rotation of the switch lever 12, so as to absorb errors in forming the through holes 64 and 65 in the radial direction. There is.

With the above configuration, when fixing the mounting position of the inhibitor switch body 11, the straight rod 63a is inserted into the through hole 64 of the select plate 30 and the through hole 65 of the switch lever 12, and the select plate 30 and the switch lever 12 are fixed in a predetermined position. Set the rotation to the interlocking position. Furthermore, the straight rod 6
3a into the recess 66 of the inhibitor switch body 11.
The relative rotational position between the switch lever 12 and the inhibitor switch main body 11 is determined by inserting the switch lever 12 into the inhibitor switch main body 11. That is, by connecting the through holes 64, 65 and the recess 66 whose positions have been determined in advance in a straight line, the through hole 64 of the select plate 30 has a radius r ₁ centered on the shaft 2, as shown in FIG. On the other hand, the through hole 65 of the switch lever 12 and the recess 66 of the inhibitor switch body 11 have the same rotation center, so they each rotate on an arc of radius r ₂ centered on the centering boss 13. However, since the arcs of radius r ₁ and radius r ₂ are set to intersect at two points A and B or at one point where these points A and B coincide (in addition,
In this embodiment, an adjusting means is provided at the point A. ), the select plate 30, the switch lever 12, and the inhibitor switch main body 11 are always at predetermined rotational positions, that is, the hydraulic pressure generation position of the manual valve 50 and the select detection position of the inhibitor switch main body 11 match. It turns out. Therefore, in this way, the through holes 64, 65
By fixing the inhibitor switch main body 11 at a position where the concave portion 66 coincides with the bolt 1 as a fixing means, it is possible to always accurately display the selection position, and safety is significantly improved.

Further, the day tent check 44a is operated by a leaf spring 46.
A simple structure using the conventional fitting hole 4 is sufficient.
5 and spring 42, it has the advantage of being able to reduce costs.

In the embodiment described above, the stop position of the manual plate 40 at each select position is determined using the select plate 30 as a reference, but the select plate 30 is connected to a control lever provided on the indoor side. Since this must also serve as a reference for each select position, the operating position of the manual plate 40, that is, the operating position of the manual valve 50, is determined by the detent check position of the control lever set to this reference position. It turns out. In this case, the detent check 44a provided on the manual plate 40 does not necessarily determine the hydraulic pressure generation position of the manual valve 50, but is merely used to prevent the manual plate 40 from rattling.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the vicinity of the inhibitor switch of an automatic transmission, FIG. 2 is a partial plan view showing the mounting part of the inhibitor switch body, and FIG. 3 is a perspective view showing the adjustment mechanism of a conventional inhibitor switch. FIG. 4 is a sectional view of a main part of a detent check provided in a conventional manual plate, and FIG. 5 is a sectional view of a main part of a detent check provided in a manual plate used in an embodiment of the present invention. , FIG. 6 is a perspective view showing an adjusting mechanism of an inhibitor switch according to an embodiment of the present invention, and FIG. 7 is an explanatory diagram showing the position determination relationship of the adjusting mechanism of an inhibitor switch according to an embodiment of the present invention. . DESCRIPTION OF SYMBOLS 1... Bolt (fixing means), 10... Inhibitor switch, 11... Inhibitor switch body, 12... Switch lever, 20... Mission case, 30... Select plate, 31...
Pin (connecting member), 40...manual plate,
44, 44a... Day tent check, 50...
Manual valve, 60, 60a...adjustment mechanism,
64, 65...through hole (adjusting means), 66... recess (adjusting means).

Claims (1)

[Claims] 1. An inhibitor switch body that detects the selection position of the automatic transmission, which is rotatably attached to the transmission case and fixed at a set position by a fixing means, and the inhibitor switch body is rotatably attached to the inhibitor switch body. a switch lever that operates a switching mechanism in the inhibitor switch main body, one end of which is rotatably attached to the transmission case, the other end of which is connected to a control lever and rotates as the control lever is operated; A select plate that operates a manual valve, and a connecting member that connects the select plate and the switch lever to rotate the switch lever as the select plate rotates, the select plate being in a rotation position of the select plate. Correspondingly, in an automatic transmission in which select position detection is performed using an inhibitor switch, with the select plate and the switch lever rotated to a predetermined interlocking position, the select plate is connected to the manual plate. Regardless of the detent check position, the manual valve is rotated to a hydraulic pressure generating position corresponding to a specific select position, and in this state, the positioning valves provided on the select plate, the switch lever, and the inhibitor switch body are An adjusting mechanism for an inhibitor switch, characterized in that the adjusting means are formed so as to be located at positions where they are connected in a straight line.