JPH035709Y2 - - Google Patents

Description

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

(Prior Art) Conventionally, there is a column-type transmission control device shown in FIGS. 3A and 3B.

In the figure, a cylindrical shaft 53 is attached to a bracket 52 fixed to a steering post 51.
is slidably attached via a collar 54 and a washer 55, and the shaft 53 is configured to always be returned to the attached position by the biasing force of an interposed spring 56.

(Problem) In the conventional structure described above, since the spring 56 and the washer 55 are present on the outer periphery of the shaft 53, it not only looks bad, but also attracts dust and dirt due to the applied grease. There was a problem that dust easily adhered to the product, making it difficult to obtain accurate parts.

Furthermore, the steering post 51 and shaft 53
If they are not parallel, there is a problem in that it is more difficult to achieve component accuracy and the operating force is affected.

(Means for Solving the Problems) The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to provide a device that can easily achieve component accuracy and has a good appearance. consists of an insert whose one end is supported by a vehicle component such as a steering post, a cylindrical shaft into which this insert is loosely fitted from the outside and is moved up and down via an operating lever, and an insert inside the shaft that extends vertically. The upper spring urges the shaft upward and is restricted by an insert so that it does not extend beyond a predetermined length, and the lower spring urges the shaft downward. At the same time,
The biasing force is set to be weaker than the biasing force of the upper spring.

(Function) The shaft into which the insert is fitted loosely from the outside is biased upward by the spring provided on the upper side of the insert, but the upper spring is prevented from elongating beyond a predetermined length by the insert. Because of the restriction, the shaft cannot be moved above a predetermined length. On the other hand, the spring provided on the lower side of the insert biases the shaft downward, but its biasing force is set to be weaker than the biasing force of the upper spring, so it cannot overpower the upper spring. The lower spring eventually stops the shaft at the rest position at the predetermined length of the upper spring. When operating the control lever to move the shaft upward from the neutral position where the shaft is at rest and select low or seland,
As the shaft moves upward, the lower spring is pressed. Therefore, when the operating lever is released, the shaft is moved downward by the biasing force of the lower spring and returned to the neutral position. on the other hand,
When the operating lever is operated to move the shaft downward and select reverse, the upper spring is pressed and the lower spring is expanded as the shaft moves downward. Therefore, when the operating lever is released, the shaft moves upward due to the strong biasing force of the upper spring, and the extension of the upper spring is restricted by a predetermined length, so that the shaft returns to the neutral position.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a side sectional view of the column type transmission control device of this example, and FIG. 2 shows an assembled view of its parts.

1 in the figure is the steering post of the vehicle,
Reference numeral 2 in the figure indicates a plate-shaped bracket protruding from the steering post 1.

The upper end 3a of the insert 3 is inserted into the through hole 2a of the bracket 2 from below, and the upper end 3a of the insert 3 is supported by the bracket 2 via an E ring 4 and a flat washer 5.

A cylindrical base portion 3b having a diameter larger than the upper end portion 3a is formed in the lower portion of the insert 3, and an end portion of an operating lever, which will be described later, is engaged with the center portion of the base portion 3b. A concave groove 3c is formed on the outer periphery near the middle between the upper end 3a and the base 3b of the insert 3. An E-ring 6 is fitted into this groove 3c, and a flat washer 7 is fitted below the E-ring 6. is provided. A spring 8 is compressed and interposed between the flat washer 7 and the upper end surface of the base 3b.
urges the flat washer 7 upward and is blocked by the upper E-ring 6, preventing it from extending any further, and its extension is restricted to a predetermined length.

In the figure, 9 is a cylindrical shaft into which the insert 3 is loosely fitted from the outside, and also includes the spring 8, flat washer 7, and E-ring, and a retainer 10 is located near the upper end of the shaft. Interior is
This retainer 10 is fixed to the shaft 9 with screws 11. On the other hand, a pin 12 is inserted through the lower part of the shaft 9, and a spring 1 is inserted between the pin 12 and the lower surface of the base 3b of the insert 3.
3 is compressed and inserted. Therefore, this spring 13 urges the shaft 9 downward via the pin 12, and can move the shaft 9 downward along the base 3b of the insert 3. However, the biasing force of the spring 13 is set to be weaker than the biasing force of the spring 8, so that the shaft 9, which is about to move downward, receives the upward biasing force of the spring 8 via the retainer 10. Flat washer 7
, and is in a state where it cannot move downward due to the biasing force of the spring 8.

Reference numeral 14 in the figure is an operating lever, and the lever insertion portion 9 is provided to protrude outward from the side peripheral surface of the shaft 9.
a, and the end 14a is inserted into the shaft 9.
is attached to the base 3b of the insert as described above. This operating lever 14 is fastened to the lever insertion part 9a via a buffer member 15 made of a rubber material, and by operating this operating lever 14 from the outside, this operating lever 14 is engaged with the base 3b of the insert. With the end 14a that is attached as a fulcrum,
The shaft 9 can be moved up and down with respect to the insert 3 using the point of action 14b.

Now, when selecting low or low using the operating lever, the shaft 9 is selected using the operating lever 14.
is moved upward. In that case, shaft 9
As the spring 13 moves upward, the spring 13
is pressed upward, the spring 13 is compressed, and the downward biasing force of the spring 13 is increased.
On the other hand, as the shaft 9 moves upward, the retainer also moves upward, but the spring 8 does not extend because its upward extension is restricted by the E-ring 6. Therefore, when the operating lever 14 is released, only the downward biasing force of the spring 13 acts, and the shaft 9 is moved downward until the retainer 10 comes into contact with the flat washer 7, and then stops. That is, the shaft 9 is returned to its original neutral position.

Conversely, when selecting reverse using the operating lever 14, the shaft 9 is moved downward by the operating lever 14. In that case, as the shaft 9 moves downward, the retainer 10 presses the spring 8 via the flat washer 7, and the spring 8 contracts to increase the upward biasing force. On the other hand, the spring 13 expands as the shaft 9 moves downward, reducing the downward biasing force. Therefore, when the operating lever 14 is released, the shaft moves upward due to the biasing force of the spring 8, and the spring 8 pushes the E-ring 6 through the flat washer 7.
It moves until it touches and stops. That is, it returns to its original neutral position.

That is, according to the device of this embodiment, the base portion 3b of the insert 3 supported substantially parallel to the steering post
By moving the operating lever 14 up and down using the shaft as a fulcrum, the shaft 9 also moves up and down, and the built-in springs 8 and 13 allow it to be easily returned to its original position in either the up or down direction, making it extremely easy to operate. improve. Moreover, since the insert 3, springs 8, 13, washer 7, etc. are housed within the shaft 9, there are no protrusions and the appearance is very good. Furthermore, each component can smoothly slide and operate without being affected by dirt, dust, etc.

(Effects) The present invention consists of an insert whose one end is supported by a vehicle component such as a steering post, a cylindrical shaft into which this insert is loosely fitted from the outside and is moved up and down via an operating lever, and a shaft inside the shaft. It is mainly composed of upper and lower springs provided in the vertical direction of the insert, respectively.The upper spring urges the shaft upward and is restricted by the insert so that it does not extend beyond a predetermined length, and the lower spring biases the shaft downward, and the biasing force is set to be weaker than the biasing force of the upper spring, which allows the shaft to easily return to its original position in response to each selection with the operating lever, improving operability. At the same time, since the spring and other elements that perform the return action are housed within the shaft, it looks good and the accuracy of the parts can be easily achieved. Further, it has the effect that operability is guaranteed without being affected even if the shaft and steering post are not parallel. Furthermore, the shape is simplified, the number of parts is reduced, and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a column-type transmission control device showing one embodiment of the present invention, and FIG. 2 is an assembled view of the parts of FIG. 1. FIGS. 3A and 3B show a side view of the conventional device and an assembly diagram thereof. 1...Steering post, 3...Insert, 6
...E ring, 8...Upper spring, 9...Shaft, 13...Lower spring, 14...Operation lever.

Claims (1)

[Scope of utility model registration request] An insert 3 whose one end is supported by a vehicle component such as a steering post 1, a cylindrical shaft 9 into which the insert 3 is loosely fitted from the outside and is moved up and down via an operating lever 14, and an insert 3 inside the shaft 9. It is mainly composed of upper and lower springs 8 and 13 provided in the vertical direction of the shaft, and the upper spring 8 urges the shaft 9 upward and is restricted by the insert 3 so that it does not extend beyond a predetermined length. A column-type transmission control device characterized in that the lower spring 13 biases the shaft 9 downward, and its biasing force is set to be weaker than the biasing force of the upper spring 8.