JPH0245069Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a control device for a column shift type transmission.

(Prior Art) As a conventional control device for a column shift type transmission, one such as that described in, for example, Japanese Patent Application Laid-open No. 141931/1983 is known.

In this conventional transmission control device, a control shaft is rotatably attached to the side of the steering jacket tube in parallel, and this control shaft includes a shift lever for rotating the control shaft, and a control shaft for rotating the control shaft. An actuation lever that rotates integrally with the shaft is provided, a bell crank is rotatably provided between the jacket tube and the control shaft, and one end of the bell crank is connected to the actuation lever with a ball joint. The bellcrank was connected by a connecting rod with two ends, and the other end of the bellcrank was connected to the automatic transmission body by a push-pull cable.

(Problem to be solved by the invention) However, in such conventional transmission control devices, the bell crank and the operating lever are connected by a connecting rod with expensive ball joints at both ends. There was a problem in that the manufacturing cost was high because of the long process.

In addition, because the bell crank was placed between the jacket tube and the control shaft, the control shaft could not be placed close to the jacket tube, and the width of the device including the jacket tube became wider, making it difficult to install. There was a problem that the ment panel took up a large amount of space. By the way, since various display devices and various control devices are placed in this instrument panel, it is best to minimize the space each device occupies so that it does not affect the arrangement of other devices. preferable.

(Means for Solving the Problems) The present invention has been made for the purpose of providing a transmission control device that eliminates ball joints, reduces costs, and makes it possible to reduce the width of the device. In order to achieve this objective, in the present invention, a control shaft is movably arranged in parallel to the side of the steering jacket tube, and the control shaft includes:
A shift lever is attached to rotate this control shaft, and an actuation lever is fixed to this control shaft in a downwardly extending state, and when the control shaft is in a downward position, the rotation direction of the actuation lever is adjusted. A bell crank rotatable in a direction orthogonal to the jacket tube is supported by the jacket tube, and the bell crank includes a pivot portion supported by the jacket tube and an input input extending in different directions from the pivot portion. an end and an output end, the output end is connected to a transmission via a linkage, an actuation transmission pin is fixed to the actuation lever, and an actuation transmission pin is fixed to the input end of the bellcrank. An elongated hole is formed through which the transmission pin is inserted, and the shape of the elongated hole is such that the pivot side is in such a way that the circumferential surfaces on both sides of the rotation of the operation transmission pin can always be kept in contact with the elongated hole. The means is formed to be narrow and wide at the tip side, and the shape of the inner peripheral edge of the elongated hole is formed into a curved shape that can accommodate the inclination of the operation transmission pin.

(Function) To explain the operation force transmission path of the transmission control device as the function of the present invention, first,
When the shift lever is operated, the control shaft is rotated, and accordingly, the operating lever is rotated about the control shaft.

An operation transmission pin is fixed to this operation lever,
Since this actuation transmission pin is engaged with an elongated hole formed in the input end of the bell crank, when the actuating lever rotates, the bell crank also rotates about the pivot portion.

This bell crank is installed so that its rotation direction is perpendicular to the rotation direction of the actuation lever, so as the two rotate, the actuation transmission pin changes its angle and engagement position with respect to the elongated hole. let That is, in the vertical engagement state where the two are substantially orthogonal, the operation transmission pin is located on the pivot side of the elongated bell crank, and in the inclined engagement state where the two intersect at an angle,
The operation transmission pin is located on the tip side of the input end of the elongated hole.

In order to accommodate this movement of the engagement position and change in the engagement angle, the elongated hole is wider towards the distal end of the input end of the bellcrank, which is in the inclined engagement state, and is wider towards the pivot point side of the bellcrank, which is in the vertical engagement state. The operation transmitting pin is formed to have a relatively narrow width, and the circumferential surfaces of the operation transmission pin in both rotational directions are always in contact with the inner circumferential edge of the elongated hole.

In addition, since the control shaft is provided on the side of the jacket tube and the bell crank is placed below the control tube, the control shaft can be placed close to the jacket tube, reducing the width of the device. be able to.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
In describing this embodiment, a device applied to an automatic transmission will be taken as an example.

First, the configuration of the embodiment will be explained.

FIG. 1 is a perspective view showing a control device A according to an embodiment of the present invention, and numeral 1 indicates a steering jacket tube. This jacket tube 1
The control shaft 1 is supported by an upper bracket 11 and a lower bracket 12 on the side of the control shaft 1.
0 are arranged in parallel so as to be rotatable around the shaft axis.

At the upper end of this control shaft 10,
A shift lever 13 is attached to rotate this control shaft 10, and an operating lever 14, a position pinch tube 15, and a check tube 16 are fixed to the lower end so as to be able to rotate integrally with this control shaft 10. has been done.
In addition, 17 in the figure is an attachment reinforcing plate. Also,
The shift lever 13 is supported by a support tube 131 so as to be swingable in the front and rear directions.

The operating lever 14 is connected to the jacket tube 1.
It extends downward, and its tip is connected to the input end 22 of the bell crank 20.

The bell crank 20 is L-shaped and is supported by the jacket tube 1 by a pivot portion 23 so as to be rotatable in a direction perpendicular to the rotation direction of the operating lever 14, and has an output end at the other end. 24 is connected to an automatic transmission (not shown) via a push-pull cable 2 as a linkage. The purpose of this bell crank 20 is to route the push-pull cable 2 almost along the jacket tube 1, and to pass it through a dash panel (not shown) at approximately the same position as the jacket tube 1. It is provided to change the direction of transmission. Also. In the figure, numeral 3 is a bracket on which the push-pull cable 2 is mounted.

The input end 22 of the bell crank 20 and the actuation lever 14 are connected to each other by being inserted into an actuation transmission pin 18 provided upright at the tip of the actuation lever 14. A long hole 2 formed in the input end 22 of the bell crank 20 as shown in FIG.
It is made up of 1. In addition, 211 in the figure is the elongated hole 2.
This is a resin bushing that forms the inner circumferential edge 212 of 1.

As shown in FIGS. 2 and 3, this elongated hole 21
is vertically engaged with the operation transmission pin 18 so that the circumferential surfaces 181 and 182 in both directions a and b of the rotation of the operation transmission pin 18 are always kept in contact with the bush 211 forming the inner peripheral edge 212. (c in the diagram)
The input end 22 has a narrow width on the side of the pivot portion 23, which becomes the inclined engagement state (d and e in the figure), and the distal end side of the input end 22 is formed wide and has a curved shape that can accommodate the inclination of the operation transmission pin 18. ing.

That is, as shown in FIG.
rotates and changes its angle with respect to the elongated hole 21 in a range from vertical engagement state c to inclined engagement states d and e. In this vertical engagement state c, as shown in FIG. 3, the operation transmission pin 18 is located on the side of the pivot portion 23 of the elongated hole 21, and the cross section of the contact position is a perfect circle. On the other hand, in the inclined engagement states d and e, the third
As shown in the figure, the operation transmission pin 18 is located on the tip side of the input end 22 of the elongated hole 21, and the cross section of the contact position is elliptical, so that the width of the operation transmission pin 18 in the rotation direction is It becomes wider. As the operation transmission pin 18 rotates in this way, the elongated hole 21 changes the abutment position with the operation transmission pin 18, and the contact peripheral surface of the operation transmission pin 18 in both rotational directions a and b. 18
The input end 22 is formed wider toward the distal end so that it can always remain in contact with both peripheral surfaces 181 and 182 of the operation transmission pin 18 even if the dimensions between the pins 1 and 182 change. The peripheral edge portion is formed of an arcuate curved surface.

Further, the position pinch tube 15 is provided with a position pin 30, and the position pin 30 is formed to be able to engage with a position regulating engagement groove 41 formed in a plate 40 fixed to the lower side of the jacket tube 1. has been done.

That is, as shown in FIG.
0 is slidably supported by the support slider 31 with respect to the position pinch up 15, and
Bell crank 32 for sliding and transmission slider 3
3, the control shaft 10 is slid upwardly by a spring 34 installed in the lower end of the control shaft 10. On the other hand, the position regulating engagement groove 41 has the parking range P, reverse range R, neutral range N, and
It is formed with a downward opening that can regulate shift changes in a predetermined direction in a predetermined range corresponding to drive range D, 2nd speed range, and 1st speed range (for example, shift change from parking range P or drive (Restricts shift change from range D to 2nd speed range).

Further, the engagement between the position pin 30 and the position regulating engagement groove 41 is released by pulling the shift lever 13 toward you. That is, when the shift lever 13 is pulled toward you, the transmission slider 33 is slid to the left in the figure against the biasing force of the spring 34, the slide bell crank 32 is rotated, and the position pin 30 is slid downward in the figure. The restrictions have now been lifted, making it possible to change gears.

Further, the check tube 16 forms a part of a check mechanism 50 that applies a check force at each range position of the shift lever 13, and this check mechanism 50 includes a check ball 51, a check spring 52, An engagement groove 53 is provided. The check ball 51 is restricted in its protruding direction by a check spring 52 provided within the check tube 16.
The check engagement groove 53 is connected to this check ball 51.
The plate 40 is formed so as to be engageable with the plate 40.

Next, the operation of the embodiment will be explained.

The control device A of the transmission of this embodiment operates by pulling the shift lever 13 toward you and pressing the position pin 30.
and the position regulating engagement groove 41 to perform a shift change. Note that this does not apply to ranges in which both are not in an engaged state, and it is sufficient to simply operate in the rotating direction.

When performing this shift change, shift lever 1
The operating force No. 3 is transmitted to the automatic transmission as described below.

First, when the shift lever 13 is operated, the control shaft 10 is rotated, and accordingly, the operating lever 14 is rotated integrally around the control shaft 10.

When the actuation lever 14 rotates, this operating force is transmitted from the actuation transmission pin 18 provided at the tip of the actuation lever 14 to the bell crank 20 through the elongated hole 21 into which the actuation transmission pin 18 is inserted. The signal is transmitted to the end portion 22, and the bell crank 20 rotates. The output end 2 of this bell crank 20
The push-pull cable 2 connected to 4 is pushed and pulled, and is transmitted to and operated by the automatic transmission.

By the way, in this embodiment, the elongated hole 21 formed in the Bergkunk 20 is as shown in FIGS.
The width is formed narrow at the position where the operation transmission pin 18 in the vertical engagement state c is arranged, and it is formed wide at the position where the operation transmission pin 18 in the inclined engagement state d and e is arranged, so that the operation transmission pin 18 is always in the vertical engagement state c. The circumferential surfaces 181 and 182 on both sides of rotation of 18 are brought into contact with each other.

Therefore, there is no play between the actuation transmission pin 18 and the elongated hole 21, and the responsiveness of the operation is good.

In addition, as shown in FIG. 1, the control shaft 10 is provided close to the side of the jacket tube 1, and the bell crank 20 is located below the control shaft 10 and the operating lever 14, thereby reducing the width of the device. be able to.

Therefore, it is possible to avoid occupying a large space in the instrument panel, especially on the sides and top of the jacket tube 1 where various devices are installed.

As explained above, in the device of this embodiment, the actuation lever 14 and the bell crank 20 are simply connected by the actuation transmission pin 18 and the elongated hole 21, so two ball joints are not required as in the conventional case. The effect is that the manufacturing cost can be reduced without having to do so.

Further, since the actuation transmission pin 18 and the inner circumferential edge of the elongated hole 21 are always in contact with each other, there is no looseness between the two and good actuation response is achieved. Furthermore, since the resin bush 211 is provided in the elongated hole 21, it is possible to easily absorb dimensional errors and the like, and there is also the effect that malfunctions are less likely to occur.

In addition, the bell crank 20 is not arranged between the jacket tube 1 and the control shaft 10, but is arranged below the control shaft 10,
Jacket tube 1 and control shaft 1
0 is located close to the jacket tube 1 where various equipment is installed, especially the instrument panel.
This has the advantage that it does not take up a large space on the sides or top of the screen.

Although the embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment. For example, in the embodiment, an example of application to an automatic transmission has been shown, Good to apply to transmissions.

Further, in the embodiment, a resin bushing is provided on the inner peripheral edge of the elongated hole, but the material of the bushing is not limited to this, and the bushing may not be provided.

(Effects of the invention) As explained above, in the transmission control device of the present invention, since the means for transmitting the rotation between the actuating lever and the bell crank using the actuating transmission pin and the elongated hole, it is different from the conventional one. There is no need for two ball joints, which are expensive members, and the manufacturing cost can be reduced.

In addition, the shape of the inner peripheral edge of the elongated hole is such that the pivot side of the bell crank, which is in vertical engagement with the operation transmission pin, is narrow, and the tip side of the input end of the bell crank, which is in oblique engagement, is wide. In addition, by forming the means into a curved shape that can accommodate the inclination of the actuation transmission pin, the actuation transmission pin is always in contact with the inner peripheral edge of the elongated hole, so there is no play between the actuation transmission pin and the elongated hole. The effect is that this does not occur and the responsiveness of the operation is good.

In addition, the control shaft is provided on the side of the jacket tube, and the bell crank is placed below the control tube, so that no member such as a bell crank is installed between the jacket tube and the control shaft. Since it is possible to place the device close to the jacket tube and the width of the device can be reduced, the device of the present invention does not occupy a large space in the instrument panel. is obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a control device for a transmission according to an embodiment of the present invention, Fig. 2 is a view taken from arrow B showing main parts of the embodiment device, and Fig. 3 is a plan view showing main parts of the embodiment device. 4 are sectional views showing the main parts of the embodiment device. 1... Jacket tube, 2... Push-pull cable (transmission mechanism), 10... Control shaft, 13... Shift lever, 14... Actuation lever, 15... Actuation transmission pin, 20... Bell crank, 21...Elongated hole, 22...Input end, 23...
...Pivotal portion, 24...Output end, 181, 182...
...peripheral surface.

Claims (1)

[Scope of Claim for Utility Model Registration] A control shaft is rotatably arranged on the side of the steering jacket tube, a shift lever is attached to the control shaft to rotate the control shaft, and further, An actuation lever is fixed to the control shaft in a downwardly extending state, and at a lower position of the control shaft, a bell crank that is rotatable in a direction perpendicular to the rotational direction of the actuation lever is attached to the jacket tube. The bellcrank is formed with a pivot supported by the jacket tube, and an input end and an output end extending in different directions from the pivot, the output end being connected to the linkage. An operation transmission pin is fixed to the operation lever, and an elongated hole into which the operation transmission pin is inserted is formed in the input end of the bell crank, and the operation transmission pin is connected to the transmission via the bellcrank. The shape of the elongated hole is narrow on the pivot side and wide on the tip side so that the circumferential surfaces on both sides of the rotation can always keep in contact with the elongated hole. The shape of the periphery is
A transmission control device characterized by being formed into a curved shape that can accommodate the inclination of an operation transmission pin.