JPH0121367Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a change control device for an automobile that changes the range of an automatic transmission.

[Conventional technology and its problems]

As shown in FIG. 6, the above-mentioned change control device is constructed by sliding a slide member 5 into a hollow change lever 4 whose lower end is connected to a boss 3 supported by a pivot shaft (not shown). The spring pin 7 is inserted into the radial hole 5a of the slide member 5 through the opposing elongated holes 6, 6 formed in the change lever 4, and one protrusion of the spring pin 7 is inserted into the slide member 5. The upward biasing force of the engagement spring 8 compressed between the boss 3 and the slide member 5 causes position regulating grooves (a plurality of position regulating grooves corresponding to each range of the automatic transmission) of a guide plate (not shown) provided on the side of the change lever 4. It is known that the change lever 4 is locked at a predetermined angle (range) position by engaging the change lever 4 (having an engaging portion). In this device, the operating rod 9, which is inserted into the change lever 4 and whose lower end abuts against the slide member 5, is moved downward by an operating button (not shown) to release the engagement between the spring pin 7 and the position regulating groove. By rotating the change lever 4 in this state, the range of the automatic transmission can be changed.

By the way, in the above device, since the height of the spring pin 7 in the state engaged with the position regulating groove, that is, the height of the slide member 5, differs depending on the range, the return for returning the operating shaft 9 upward is required. It is necessary to provide a spring (not shown) separately from the engagement spring 8, but because the return spring must be placed above the slide member 5 due to the engagement with the engagement pin 7, two springs are required. The springs are arranged separately at the top and bottom of the slide member 5, which not only requires time and effort to assemble the springs, but also requires setting the vertical position of the slide member 5 and the direction of the hole 5a before inserting the spring pin 7. Since it had to be driven in, there was a problem in that the ease of assembly was extremely poor.

Furthermore, in the above configuration, loosening of the spring pin 7 tends to cause misalignment in the axial direction, and if the spring pin 7 comes off the position regulating groove while the vehicle is running, there is a risk that the change lever 4 will be in a free state. It was hot.

[Means for solving problems]

The present invention has been made to solve the above-mentioned problems, and includes a slide member that has an engagement protrusion that protrudes outside the change lever and engages with a position regulation groove, and is provided with a vertical through hole. The operating shaft is provided with an abutting part that abuts against the upper part of the slide member, and a protruding lower end that protrudes downward from the slide member through the through hole, and the operating shaft is provided with an abutting part that abuts against the upper part of the slide member, and a protruding lower end that protrudes downward from the slide member through the through hole. A return spring for returning the operating shaft upward is arranged between the shafts concentrically with an engagement spring for biasing the slide member upward.

[Effect of idea]

In the present invention, since the engagement spring and the return spring are arranged concentrically below the slide member, both springs can be assembled at the same time, improving the ease of assembling the springs.

In addition, since the slide member is provided with a through hole through which the lower end of the operating shaft passes, the slide member is reliably positioned by the operating shaft and no misalignment occurs. The amount of protrusion of the part from the change lever is kept constant, and the engagement between the engagement protrusion and the position regulating groove is reliably maintained.

〔Example〕

Examples of the present invention will be described below.

As shown in FIGS. 2 and 3, the change control device for an automobile according to the present embodiment includes a base plate 11 and a change lever 16 that is rotated around a rotation support shaft 15 supported by the base plate 11. and a shift arm 20 that rotates integrally with the change lever 16 to switch the range of an automatic transmission (not shown).

Boots 1 are provided on the bottom surface of the base plate 11.
3 are joined, and a shift arm 20 projects from the boot 13. Bent parts 14, 14 that fall downward are formed on the base plate 11, and a boss 17 is rotatable via a sleeve 18 on a pivot shaft 15 whose both ends are supported by the bent parts 14, 14. The lower end of a cylindrical change lever 16 is freely supported and connected to the boss 17 at right angles by welding.

A shift arm 20 is fitted to the rotation support shaft 15, and the upper arm 21 of the shift arm 20 is attached to a bracket 22 fixed to one side of the change lever 16 with an adjustment bolt 23 (change lever 16). (for fine adjustment of the relative angle between the shift arm 20 and the shift arm 20). When the change lever 16 is rotated around the rotation support shaft 15, the shift arm 20 rotates together with the shift lever 16, and the boot 1
The range of the automatic transmission is configured to be switched via a cable mechanism (not shown) or the like, one end of which is connected to a lower arm portion 24 of a shift arm 20 that projects downward from the lower arm portion 24 of the shift arm 20 . The change lever 16 is provided with a locking mechanism B for locking the change lever 16 at an angular position corresponding to a predetermined range (1, 2, . . . , P).

The locking mechanism B has a generally inverted U-shape, and is provided on the side of the change lever 16 in parallel with the rotation orbital surface of the change lever 16, and includes a guide plate whose both ends are fixed to the base plate 11. 2
5, a position regulating groove 26 which is bored in the guide plate 25 and locks the change lever 16 in a predetermined angle (range) position;
A slide member 27 and a cylindrical first spring holder 28 are each movable up and down, and are compressed between the first spring holder 28 and the boss 17, and urge the slide member 27 upward via the first spring holder 28. an engagement spring 30 which is inserted into the change lever 16 and which moves the slide member 27 downward against the biasing force of the engagement spring 30.
1, the engagement protrusion 32 provided on the slide member 27 is forced to protrude into the position regulation groove 26 through the elongated hole 33 formed on the other side of the change lever 16, and the biasing force of the engagement spring 30 Therefore, the engaging protrusion 32 is engaged with the position regulating groove 26 at a position corresponding to a predetermined range.

As shown in detail in FIG. 4, the slide member 27 includes an annular guide portion 34 that fits into the inner periphery of the change lever 16 and guides the slide member 27 in the vertical direction, and the engagement protrusion 32. It includes a fitting part 36 that fits into another long hole 35 provided at a position opposite to the long hole 33 of the change lever 16. Then, the lower end 37 of the operating shaft 31 is fitted into the through hole 38 of the guide portion 34 of the slide member 27 and the upper part of the first spring holder 28, and the operating shaft 31 is inserted into the slide member 27 in the direction perpendicular to the axis. while positioning the operating axis 3 securely.
The large diameter portion 40 provided in the slide member 1 is brought into contact with the upper part of the slide member 27, and the slide member 2 is moved by the operation shaft 31.
7 can be moved downward.

Further, a cylindrical second spring holder 41 (see FIG. 1b) is inserted into the lower part of the first spring holder 28, and the large diameter part 42 at the upper end is connected to the large diameter part 42 and the first holder. 28, a return spring 43 compressed concentrically with the engagement spring 30 is brought into contact with the lower end 37 of the operating shaft 31.
is urged upward (in the return direction).

When performing a gear change operation using such a change control device, the operation button (not shown) of the operation knob 48 is pressed to move the operation shaft 31 downward, so that it slides against the biasing force of the engagement spring 30. The member 27 is moved downward, thereby rotating the change lever 16 in the front-rear direction with the engagement protrusion 32 and the position regulating groove 26 disengaged. After rotating the change lever 16 to the angular position corresponding to the desired range, if the pressure on the operation button is released, the engagement protrusion 32 is moved into the position regulating groove 2 by the urging force of the engagement spring 30.
6, and the change lever 26 is locked at the new locking position, thereby completing the gear shifting operation. Note that the operating shaft 31 is returned upward by the return spring 43.

Next, the procedure for assembling the change lever section will be explained.

(i) As shown in FIG. 1a, the return spring 43 and the second spring holder 41 are sequentially inserted into the first spring holder 28 from above, and the temporary fixing part 45 of the second spring holder 42 is inserted into the first spring holder 28.
The spring holder 28 is caused to protrude downward through the hole 44 at the bottom, and the temporary fixing portion 45 is brought into contact with the bottom of the first spring holder 28 by the biasing force of the return spring 43. Subsequently, the upper part of the engagement spring 30 is attached to the outer periphery of the first spring holder 28 from below, and the upper end is attached to the first spring holder 28.
The engagement spring 30 is clamped between the shoulder portion 46 of the spring holder 28 and the annular protrusion 47 for temporary fixing.
is temporarily fixed to the first spring holder 28. In this way, the spring unit C is formed by temporarily assembling the return spring 43 and the engagement spring 30 prior to insertion into the change lever 16.

(ii) Next, the spring unit C is inserted from above into the change lever 16 to which the boss 17 is connected by welding, and the lower end of the engagement spring 30 is brought into contact with the boss 17. At this time, since the first spring holder 28 of the spring unit C is guided by the inner cylindrical surface of the change lever 16,
It is inserted very smoothly, and the return spring 43 and the engagement spring 3 are inserted in the middle of the insertion.
There is no possibility that 0 will fall out.

(iii) Next, as shown in Fig. 4, slide member 2
7 in a direction in which the center line of its through hole 38 is perpendicular to the center line of the change lever 16,
Insert it into the change lever 16 through the elongated hole 33 and fit the fitting part 36 into the elongated hole 35. In this state, rotate the slide member 27 by 90 degrees around its center line l-l to fit the fitting part 36 into the through hole 38. Align the center line with the center line of the change lever 16.

(iv) Subsequently, insert the operating shaft 31 into the change lever 16 from above, insert its lower end 37 into the through hole 38 of the slide member 27 and the first spring holder 28, and use the operating shaft 31 to close the slide member. 27, and the large diameter portion 4
0 against the slide member 27. Thereafter, the operating knob 48 is attached to the upper end of the change lever 16.

Next, a second embodiment will be described based on FIG.

In this second embodiment, the slide member 27 is inserted through the elongated hole 33 in the same way as in the first embodiment, and then the slide member 27 is inserted into the change lever 16 from its lower opening to the first member having a generally cylindrical shape that is slidable relative to the change lever 16. After sequentially inserting the spring holder 50, the engagement spring 51 and the return spring 52 which are arranged concentrically, a second spring holder 53 having a substantially cylindrical shape is inserted.
is press-fitted, and then the boss 17 is connected to the lower end of the change lever 16 by welding. By doing this, the springs 51 and 5 can be
The springs 51 and 52 can be inserted into the change lever 16 relatively easily even if the springs 2 are not made into a unit. The operation of the change control device according to the second embodiment is the same as that in the first embodiment, so a description thereof will be omitted.

[Brief explanation of the drawing]

FIG. 1a is a sectional view showing the state of the spring unit according to the first embodiment of the present invention before it is inserted into the change lever, FIG. 1b is a sectional view showing the state after it is inserted into the change lever, and FIG. 2 is a side view of the change control device according to the first embodiment of the present invention, FIG. 3 is a sectional view taken along the - line in FIG. 2, and FIG. 4 is a perspective view of the slide member in FIG. 3.
FIG. 5 is a partial sectional view of a change control device according to a second embodiment of the present invention, and FIG. 6 is a partial sectional view of a conventional change control device. 15...Rotation shaft, 16...Change lever,
25... Guide plate, 26... Position regulation groove, 27... Slide member, 30... Engagement spring, 31... Operation shaft, 32... Engagement protrusion,
37...Protruding lower end portion, 38...Through hole, 40...
Large diameter part (abutting part), 43...Return spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A hollow change lever whose lower end is connected to a rotation shaft and which switches the range of an automatic transmission by rotating around the rotation support shaft, and a hollow change lever inserted into the change lever. , a slide member that is biased upward by an engagement spring interposed between the rotation support shaft and is formed with an engagement protrusion that protrudes outside the change lever; a guide plate having a position regulating groove that engages with the engagement protrusion of the slide member that is biased upward and locks the change lever at a predetermined angular position; A change control device for an automobile, comprising an operating shaft inserted through the slide member and allowing rotation of the change lever in a state in which the slide member is moved downward to disengage the engagement protrusion and the position regulation groove, A vertical through hole is formed in the slide member, and the operating shaft includes an abutment portion that abuts against the upper part of the slide member, and a protruding lower end portion that protrudes downward through the through hole. A return spring for returning the operating shaft upward is provided between the protruding lower end of the operating shaft and the rotation support shaft.
A change control device for an automobile, characterized in that it is arranged concentrically with the engagement spring.