JPH0245070Y2 - - Google Patents

Description

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

(Prior Art) Conventionally, as a column-type control device for an automatic transmission, the one described in, for example, Japanese Patent Laid-Open No. 57-209427 is known.

In this conventional column-type control device for an automatic transmission, a control shaft connected to the automatic transmission via a transmission member is rotatably installed in the vicinity of a steering column, and this control shaft has a shift changer. A shift lever and a shift regulation mechanism for regulating the shift change are provided, and a regulation release operation of swinging the shift lever toward you releases the regulation by the shift regulation mechanism, and at the same time, the control shaft is rotated by the shift lever. It was designed to perform a shift change.

As shown in FIG. 5, the shift regulating mechanism includes a lock plate 01 connected to the shift lever so as to slide in conjunction with the swinging of the shift lever, and a lock plate 01 that engages with this lock plate to change the shift. A position plate 03 in which a regulating engagement groove 02 is formed, and a lock plate 0
1 was provided with a stepped portion 04 so as to be engaged with a predetermined lock wall at a predetermined position.

(Problems to be solved by the invention) However, in such a conventional column type control device for an automatic transmission, as shown in FIG. 5, the lock plate 01 has a biasing force 0f in the engagement direction. When the end surface 05 of the stepped portion 04 of the lock plate 01 is in surface contact with the position plate 03, for example, when performing a shift change that does not involve a restriction release operation, as shown in FIG. If a shift change is performed while the surfaces are in contact as shown, there is a problem in that the frictional resistance between the end surface 05 and the position plate 03 impedes the operating force and deteriorates the operating feeling.

(Means for Solving the Problems) The present invention aims to provide a column-type control device for an automatic transmission in which the shift regulating mechanism does not interfere with shift changes due to frictional resistance or adversely affect the operational feeling. In order to achieve this purpose, in the present invention, a control shaft connected to an automatic transmission via a transmission member is rotatably arranged in parallel near the steering column, and the control shaft is connected to the steering column. is provided with a shift lever that performs a shift change and a shift regulation mechanism that postpones a shift change, and when the shift lever is operated to release the regulation, the regulation by the shift regulation mechanism is released, and the shift lever rotates the control shaft. In the column-type control device for an automatic transmission, the shift regulating mechanism includes a position pin slidably connected to the shift lever in conjunction with a regulation release operation of the shift lever, and a position pin connected to the steering column. a position plate fixed to the position plate and having a cutout engagement groove that engages with the position pin; the position pin is urged to slide in the engagement direction by a return spring; and the engagement groove is at least A parking lock wall that engages with the position pin in the parking range to restrict the shift change to the reverse range, and a reverse lock wall that engages the position pin in the reverse range to restrict the shift change to the parking range are formed; The device is characterized in that an inclined guide portion is formed between the parking lock wall and the reverse lock wall to guide the position pin toward the parking lock wall or the reverse lock wall.

(Function) The operation of the column-type control device of the automatic transmission of the present invention is the same as the conventional one, and in the range where shift change is restricted, the shift lever is used to release the restriction, and in other ranges, the restriction is released. While in the range, the control shaft is rotated using the shift lever, which changes the shift of the automatic transmission.

In the shift regulation mechanism, shift regulation is achieved by engagement between the position pin and the engagement groove, and since the contact is between the pin and the groove, it is a line contact, which can lower frictional resistance than in the case of conventional surface contact. can.

Therefore, the frictional resistance of the shift regulating mechanism does not impede the operation of the shift lever or deteriorate the operation feeling.

In addition, since an inclined guide section is provided between the parking range and the reverse range,
Even if the operating force is removed while the position pin is in this position, the position pin will be pressed against the inclined guide part by the biasing force of the lock spring, and will be restricted to the parking range restricted by the parking lock wall or the reverse lock wall. Guided to reverse range.

Therefore, even if the operation is incomplete and the shift change operation is performed only between the parking range and the reverse range, the shift change will be made to the parking range or the reverse range, and the shift will be made between the parking and reverse range. is prevented.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment will be explained.

FIG. 1 is a perspective view of a column-type control device A for an automatic transmission according to a first embodiment of the present invention.
1 indicates the steering column. A control shaft 10 is supported by an upper bracket 11 and a lower bracket 12 and is arranged side by side on the side of the steering column 1 so as to be rotatable about its axis.

At the upper end of this control shaft 10,
A shift lever 13 for rotating the control shaft 10 is attached, 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 rotatable integrally with the control shaft 10. has been done. In addition, 17 in the figure is an attachment reinforcing plate. Further, the shift lever 13 is supported by a support bracket 131 so as to be swingable in the front-rear direction.

The operating lever 14 is connected to the steering column 1
It is connected to an automatic transmission (not shown) via a bell crank 20 rotatably supported by a bell crank 9 and a push-pull cable 2 connected to the bell crank 20.

That is, when the control shaft 10 is rotated, the operating lever 14 is also rotated, and this rotation is changed direction by the bell crank 20 and transmitted to the automatic transmission via the push-pull cable 2, thereby causing a shift change. is achieved.

Note that one end of the bell crank 20 and the operating lever 14
The connection is made by an operation transmission pin 18 erected at the tip of the operation lever 14 and an elongated hole formed at one end of the bell crank 20 so that the operation transmission pin 18 is inserted and engaged. It is made up of 21. Note that 3 in the figure is a bracket on which the push-pull cable 2 is mounted.

The position pinch tube 15 is provided with a position pin 30.
is formed to be able to engage with a position regulating engagement groove 41 formed in a position plate 40 fixed to the lower side of the steering column 1.

That is, the position pin 30, the position plate 40, and the position regulating engagement groove 41 constitute a shift regulating mechanism 60 that regulates the shift change by the shift lever 13. As shown in FIG. 2, the position pin 30 is rotatably supported by a position pin holder 31, and is also slidably supported by the position pin holder 31 with respect to the position pinch tube 15. Further, this position pin 30 is biased upward (in the engagement direction) to slide (biasing force F ) has been done. As described above, this return spring 34 slides and urges the position pin 30 in the engagement direction, and the compression rod 3
3 is biased to slide, and the shift lever 13 is placed in the normal forward position.

On the other hand, the position regulating engagement groove 41 is arranged in the parking range P of the shift lever 13, the Rivas range R, the neutral range N, the drive range D,
It is opened downward to be able to regulate the shift change in a predetermined direction in a predetermined range corresponding to the 2nd speed range and the 1st speed range, and in Fig. 3, in particular, the shift change from the parking range P is restricted. A parking lock wall 42 that restricts the shift change from the reverse range R to the parking range P is shown.

An inclined guide portion 44 is formed between the parking lock wall 42 and the reverse lock wall 43 and is inclined toward the parking lock wall 42 and guides the position pin 30 to the parking range P.

That is, the inclined guide portion 44 is moved by the biasing force F of the return spring 34 to the position pin 30.
When the shift lever 13 comes into contact with this inclined guide portion 44, this inclination causes a component force f of the biasing force F to guide the position pin 30 to the parking range P, thereby shifting the shift lever 13 to the parking range P. ing.

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 compression rod 33 is slid to the left in the figure against the biasing force of the return spring 34, the slide bell crank 32 is rotated, and the position pin 30 is moved toward the left in the figure. The restriction is released by sliding it downwards, allowing the shifter to be changed.

The check tube 16 is connected to the shift lever 1.
It forms part of a check mechanism 50 that applies a check force at each of the range positions of No. 3, and
This check mechanism 50 includes a check ball 51,
It is provided with a check return spring 52 and a check engagement groove 53. The check ball 51
is regulated in the protruding direction by a check spring 52 provided within the check tube 16. A check engagement groove 53 is formed in the position plate 40 so as to be able to engage with the check ball 51.

Next, the operation of the embodiment will be explained.

The column type control device A of the automatic transmission according to the first embodiment performs a restriction release operation (swings toward you) with the shift lever 13 to release the engagement between the position pin 30 and the position timing engagement groove 41. Perform a shift change. By the above restriction release operation, for example, in the parking range P in this embodiment, the position pin 30 slides from the r position to the s position in FIG. 3, and the restriction by the parking lock wall 42 is released.

Note that this does not apply to a shift change in a direction in which the position pin 30 is not restricted, such as from reverse range R to neutral range N, for example, and the shift lever 13 may simply be rotated in the desired range direction. During a shift change that does not involve such a restriction release operation, the position pin 30 is brought into contact with the position restriction engagement groove 41 by the biasing force F of the return spring 34, but both 30 and 41 are in line contact. Since the position pin 30 rotates upward, the frictional force is extremely small and does not interfere with the shift change operation or worsen the operation feeling.

In addition, the parking range P is set by the shift lever 13.
is also the most stroked position, so even if you intend to shift to parking range P, you may end up shifting only to between reverse range R and parking range P.

In such a case, in the embodiment, the position pin 30 (position t in FIG. 3) is brought into contact with the inclined guide portion 44 by the biasing force F of the return spring 34, and a component force f is generated, so that the position pin 30 is not parked. As a result, the shift lever 13 is shifted to the correct parking range P.

As explained above, in the embodiment device, the effect that the frictional resistance of the shift regulating mechanism 60 does not interfere with the shift operation or deteriorate the operation feeling can be obtained. Also,
It is also possible to prevent the vehicle from being shifted between the parking range P and the reverse range R by mistake.

Next, a second embodiment shown in FIG. 4 will be described.

In this second embodiment, the position pin holder 23
1 and the compression rod 233 is performed by forming a cam surface 201 on the position pin holder 231 instead of using a bell crank.

Therefore, when the compression rod 233 pushes the cam surface 201 of the position pin holder 231 by operating the shift lever 13, the position pin holder 231 slides and the engagement of the shift regulating mechanism 60 is released.

Note that the other configurations and operations are the same as those in the first embodiment, so explanations will be omitted.

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, the position pin is rotatably provided with respect to the support slider. Although shown, it may be fixed to a position pin holder.

In addition, in the embodiment, an example was shown in which the position pin was provided in the position pin holder, but it is provided in a rigidly connected state to the compression rod, and the engagement is released by sliding in the sliding direction of the compression rod. The position plate may be arranged so as to

In addition, in the embodiment, the return spring serves both as a return for the position pin holder and a return for the compression rod. The spring that determines the contact force may be provided independently from the return spring that also serves as a spring.

(Effects of the invention) As explained above, in the column-type control device for an automatic transmission of the invention, the shift regulating mechanism is a means that includes a position pin and a position plate in which an engagement groove is cut out. As a result, the operation of the shift lever is not hindered by the frictional resistance of the shift regulating mechanism, and the operation feeling is not deteriorated. Since an inclined guide part is formed between the position pin and the position pin to guide the position pin toward the parking lock wall side or the reverse lock wall side, it is possible to prevent the position pin from being shifted between parking and reverse due to incomplete operation. You can also get the effect of

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a column type control device for an automatic transmission according to the first embodiment of the present invention, Fig. 2 is a sectional view showing the device of the first embodiment, and Fig. 3 is a main part of the device of the first embodiment. FIG. 4 is a sectional view showing the device of the second embodiment, and FIGS. 5 a to 5 b are sectional views showing a conventional example. DESCRIPTION OF SYMBOLS 1... Steering column, 2... Push-pull cable (transmission mechanism), 10... Control shaft, 13... Shift lever, 30... Position pin, 34... Return spring, 40...
...Position plate, 41... Position regulating engagement groove (engaging groove), 42... Parking lock wall, 43... Reverse lock wall, 44... Inclined guide portion, 60... Shift regulating mechanism.

Claims (1)

[Claims for Utility Model Registration] A control shaft connected to the automatic transmission via a transmission member is rotatably installed in the vicinity of the steering column, and the control shaft includes a shift lever for changing shifts and a shift lever. The automatic transmission is provided with a shift regulation mechanism that regulates shifting, and when the shift lever is operated to release the regulation, the regulation by the shift regulation mechanism is released, and the shift lever rotates a control shaft to change the shift. In the column-type control device, the shift restriction mechanism includes a position pin slidably connected to the shift lever in conjunction with a restriction release operation of the shift lever, and an engagement fixed to the steering column and engaged with the position pin. a position plate with a notched engagement groove, the position pin is biased to slide in the engagement direction by a return spring, and the engagement groove engages with the position pin at least in the parking range and in the reverse range. A parking lock wall that restricts the shift change to the parking range, and a reverse lock wall that engages in the reverse range and restricts the shift change to the parking range are formed, and further, between the parking lock wall and the reverse lock wall, A column-type control device for an automatic transmission, characterized in that an inclined guide portion is formed to guide a position pin toward a parking lock wall side or a reverse lock wall side.