JPS5925697Y2 - Transmission control device used in tilt cab type vehicles - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a transmission control device used in a tilt cab type automobile.

Conventionally, transmission control devices used in this type of tilt-cab type vehicle connect the change lever to the control rod via a link mechanism, regardless of whether the cab is tilted, or Some devices uncouple the change lever from the control rod when tilted; this invention belongs to the latter category.

The latter conventional transmission control device does not allow the change lever located on the cab side to move vertically with respect to the cab floor, so when the cab is lowered from the tilt condition to the normal condition, the change lever and shift selection・In order to ensure the connection with the lever, the flare part of the ball socket formed on the change lever is enlarged.

In this way, the formation of a large portion of the flare means that
It is structurally unfavorable due to the narrow space between the chassis side and the cab side.

The purpose of this invention was to create a connection mechanism between the change lever, which is normally placed on the cab side, and the shift selection lever, which is placed on the chassis side, in order to be suitable for the narrow space between the cab side and the chassis side. To provide a transmission control device for use in a tilt cab type automobile, which can be miniaturized and connected reliably, has a simple structure, and can be manufactured at low cost.

To this end, the transmission control device used in the tilt-cab type vehicle of this invention has a bearing disposed on the floor of the cab, a pair of transmission control devices that penetrate through the bearing, and are fitted and held in the bearing. The receiver has a change lever with a yoke with a mouth at the lower end,
The yoke holder is disposed on the chassis side below the cab, and when the cab is in a normal state, the yoke holder is fitted into the opening, and when the cab is tilted, the yoke holder has a spider at its upper end that is removed from the opening. , a shift selection lever whose lower end is connected to the control rod, a neutral positioning spring that holds the shift lever in a neutral position relative to the cab floor when the cab is tilted, and a cab dill. 1 ~ In the state,
It consists of a spider return spring that returns the spider to a horizontal position.

Hereinafter, preferred specific examples of the transmission control device for use in a tilt cab type automobile according to the present invention will be described with reference to the drawings.

1 and 2 show a specific example 10 of the transmission control device of this invention applied to a tilt cab type truck 60. FIG.

This transmission control device 10 includes a bearing 11 disposed on a floor 62 of a cab 61, a change lever 12 that passes through the bearing 11 and is fitted and held in the bearing 11, and extends below the cab 61. A shift lever attached to the control rod 20, connected to the change lever 12 when the cab 61 is in a normal state, and detached from the change lever 12 when the cab 61 is tilted.
The selection lever 13, the neutral positioning spring 14 that holds the change lever 12 in a neutral position relative to the cab floor 62 when the cab 61 is tilted, and the shift selection lever 13 when the cab 61 is tilted. The spider return spring 15 returns the spider 19 to the horizontal position, and the cab 61
In the normal state, the shift selection lever 13 includes a pair of noise effluents 16 disposed on the spider 19 so as to be interposed between the yoke 18 of the change lever 12 and the spider 19 of the shift selection lever 13.

The bearing 11 is fitted into an opening 63 in a cab floor 62, and the housing 21 is fixed to the floor 62 by bolt donut means (not shown) through a washer (not shown), and the bearing of the housing 21 is fitted into the opening 63 of the cab floor 62. - Consists of a ball seat 23 fitted in the bore 22, and the ball seat 23 has an inner circumferential surface 24 consisting of a partially spherical surface.
It is equipped with

The change lever 12 passes through the bearing 11 and extends below the cab floor 62 at its lower end, and is provided with a fulcrum ball 25 at its lower end to be fitted and held in the bearing 11, and also has a yoke 18. It is threaded and connected to the bottom end.

The fulcrum ball 25 has a bearing bore 22
That is, when the ball seat 23 is fitted, a snap ring (not shown) that is fitted into a groove (not shown) in the housing 21 with a washer (not shown) interposed It is held within the sheet 23.

As shown in FIG. 1, the fulcrum ball 25 also has a pair of longitudinal grooves 26 for a pair of set pins (not shown) that regulate the position of its attachment to the cab floor 62.
is formed on the outer peripheral surface.

Further, the yoke 18 is provided with a pair of sockets 27.

The shift selection lever 12 is a control
It consists of a pair of brackets 28 welded to the tip of the rod 20, and a spider 19 rotatably attached between the upper ends of the brackets 28.

Ribs 29 are welded between the brackets 28, and the ribs 29 reinforce the brackets 28 and
The spider return spring 15 can be placed in the notch 30.

The spider 19 includes a sleeve portion 31 and a pair of bushes 33.
A bolt pin 32 is fitted into the sleeve portion 31 so as to be interposed therebetween; The sleeve portion 31 includes a yoke-side pin 33 and a boss 34 integrally projected from the outer peripheral surface of the sleeve portion 31 for attaching the cap-shaped yoke guide 17.

The bolt pin 32 is fitted into a bearing hole 35, 36 formed at the tip of the bracket 28, and a nut 38 is screwed into the threaded portion 37 of the bolt pin 32 with a lock washer 39 interposed between the brackets 28. It is attached.

Therefore, the sleeve portion 31 provided with the yoke-side pin 33 is rotatably supported between the brackets 28 via the bolt pin 32 thereof.

Further, when the bolt pin 32 is fitted into the sleeve portion 31, a pair of O-rings 40 are interposed between the sleeve portion 31 and the bolt pin 32, and the sleeve portion 31 and the bolt pin 32 are brought into contact with each other. Protects the surface from dust.

The yoke side pin 33 rotatably holds the noise exfluder 16 at both ends, and in the normal state of the cab 61, the yoke 1 is connected to the yoke 1 via the noise exfluder 16.
The receiver 8 is engaged with the mouth 27.

Further, the yoke side pin 33 has an annular groove 41 for a snap ring 42 formed at both ends thereof, and by fitting the snap ring 42 into the annular groove 41, it is possible to prevent the Noise Ffluder 16 from being removed. There is.

The boss 34 is integrally projected above the outer peripheral surface of the sleeve portion 31 in the vertical direction perpendicular to the axis of the bolt pin 32, and is connected to the screw 50 that fixes the cap-shaped yoke guide 17. A through hole (not shown) is provided for this purpose.

As such, the control rod 20 to which the shift selection lever 13 is attached is of course connected at its rear end to the transmission (not shown) via an equalizer bar (not shown).

Neutral positioning spring 14 is the first
As shown in the figure, it is located between the housing 21 and the lock nut 43, and when the cab 61 is tilted, the change lever 12 is positioned relative to the cab floor 62.
hold in neutral position.

The spider return spring 15 always returns the yoke-side pin 33 to the horizontal position when the cab 61 is tilted, that is, when the change lever 12 and the control rod 20 are disconnected. Then, when the attitude of the spider 19 with respect to the bracket 28 is adjusted and the cab 61 is lowered from the tilted state to the normal state, the connection between the change lever 12 and the control rod 20, that is, the holder of the yoke 18 is Yoke side pin 33 via Noise Ffluder 16
One end is hooked to the hanger 44 of the spider 19, the other end is hooked to the rib 29, and is located in the notch 30 of the rib 29.

In addition, this transmission control device 10
absorbs and alleviates gear mesh noise and vibration in the transmission during gear change, and substantially reduces transmission to the change lever 12 via the shift selection lever 13. In order to improve the shift feel of the change lever 12, or in other words, the feel of the change lever 12, a pair of Nois Ffluders 16 are rotatably attached to both ends of the yoke side pin 33, and the cab 61 is lowered, the change lever 12 is connected to the shift selection lever 13 via the noise filter 16. To be more specific, the port 27 of the yoke 18 is connected to the noise filter 16. - It is configured to mesh with the yoke side pin 33 of the spider 19 via the Ffluder 16.

The noise F/F fluid 16 is rotatably held at both ends of the yoke-side pin 33, and includes a bearing 45 and a band-shaped buffer layer 46 integrally formed on the upper outer peripheral surface of the bearing 45.

The bearing 45 is made of an ordinary plain bearing material, and has an oil supply plug 48 screwed into an oil supply hole 47.

Further, in the bearing 45, the band-shaped buffer layer 46 is always positioned above, and since the band-shaped buffer layer 46 is engaged with the opening 27 of the yoke 18, its lower side is made thick, and the inner surface of the lower end is made thick. A stopper 49 is made to protrude.

On the other hand, the band-shaped buffer layer 46 may be made of a rubber band, a nylon coating, or any other suitable buffer material.

Furthermore, this transmission control device 1
0 is equipped with a cap-shaped yoke guide 17 to ensure smooth connection between the change lever 12 and the shift selection lever 13 when the cab is lowered from the tilted state to the normal state.

The cap-shaped yoke guide 17 is fixed to the boss 34 of the spider 19 by screws 50.

As such, since the cap-shaped yoke guide 17 is disposed on the spider 19, when the cab 61 is lowered from the tilted state to the normal state, the yoke 18 of the change lever 12 is guided by the cap-shaped yoke guide 17, and the yoke The opening 27 of the receiver 18 is reliably and smoothly engaged with the Noisy FFS Fluder 16 of the yoke side pin 33.

The above-mentioned transmission control device 10 includes:
A bellows-type dust cover (
A bellows-type dust cover (not shown) is placed between the bearing 11 and the lock nut 51 on the underside of the cab floor 62 to cover the neutral positioning spring 14. ) are placed.

In addition, the above-mentioned transmission control device 1
0, a lift device for supporting the shift selection lever 13 in a floating state with respect to the chassis side is installed between the controller roll rod 20 and the chassis, that is, the frame longitudinal member (not shown). It is more desirable to place

In addition, the transmission control device 1
0 is configured, so if the cab 61 is in a normal state, that is, in a lowered state, the yoke 18 will not cause noise.
The change lever 1 engages with the yoke side pin 33 of the spider 19 via the Ffluder 16.
2 is connected to a shift selection lever 13.

Therefore, the operation of the change lever 12 is transmitted to the transmission via the shift selection lever 13, the control rod 20, and the equalizer bar.

Also, if the cab 61 is tilted, the yoke 18
is removed from the yoke-side pin 33 from the noise effluent 16, and the change lever 12 is disconnected from the shift selection lever 13.

At that time, the change lever 12 is moved to the cab floor 6 by the neutral positioning spring 14.
The spider 19 is held in a neutral position with respect to 2, and the spider 19 returns the yoke side pin 33 to the horizontal position.
Since the support posture with respect to the bracket 28 is adjusted by the return spring 15, the cab 6
1 is lowered, the change lever 12 is reliably and smoothly connected to the shift selection lever 13.

According to this invention with the above structure, the change lever on the cab side and the shift selection lever on the chassis side can be connected by the yoke and the spider, and when the cab is tilted, the change lever can be connected to the cab side.・In order to support the spider on the bracket so as to hold it in a neutral position with respect to the floor and return the yoke side pin to a horizontal position, the change lever is designed to be suitable for narrow spaces between the cab side and the chassis side. The connection mechanism between the change lever and the shift selection lever has been downsized to ensure reliable and smooth connection, and the change lever and shift selection lever are maintained in a securely and firmly connected state under normal cab conditions. It is simple and inexpensive to produce.

[Brief explanation of the drawing]

Figure 1 is a partial vertical sectional view of the transmission control device of this invention applied to a tilt cab type truck, partially cut away and seen from the front.
FIG. 2 is a cross-sectional view taken along line -2. 10... Transmission control device, 11... Bearing, 12... Change lever, 13... Shift selection lever, 14...・・Neutral positioning spring, 15・・・・Spider return・
Spring, 16... Noise Ffluda, 17... Kasagata yoke guide, 18...
... York, 19 ... Spider, 20 ...
...control rod.

Claims (1)

[Scope of Claim for Utility Model Registration] A bearing disposed on the floor of a cab, and a pair of holders that are fitted and held in the bearing so as to pass through the bearing, and a pair of holders have a yoke with a mouth at the lower end. A change lever is disposed on the chassis side below the cab, and when the cab is in a normal state, the yoke's receiver is fitted into the mouth, and when the cab is tilted, the yoke's receiver is fitted from the mouth. a shift selection lever having a spider to be removed at its upper end and connected to a control rod at its lower end; and maintaining the shift selection lever in a neutral position with respect to the cab floor when the cab is tilted. A transmission control device for use in a tilt cab type vehicle, comprising: a neutral positioning spring; and a spider return spring that returns the spider to a horizontal position when the cab is tilted.