CN100354156C

CN100354156C - Method and device for preventing car slip on slope

Info

Publication number: CN100354156C
Application number: CNB2004100517480A
Authority: CN
Inventors: 任毅; 唐新颖; 牛茹茹
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2004-09-28
Filing date: 2004-09-28
Publication date: 2007-12-12
Anticipated expiration: 2024-09-28
Also published as: CN1754714A

Abstract

The present invention discloses a method for preventing an automobile from sliding on a slope and a device of the method. A one-way locking device is added on a low-speed gear wheel or a reverse gear wheel of a gearbox. Thus, when the automobile is switched to a low-speed gear or a reverse gear, a driving shaft only rotates in the forward direction and is locked in the reverse direction, and thereby, the automobile is prevented from retreating in the process of starting upward the slope and is prevented from forward sliding in the process of reverse running downward the slope.

Description

A kind of method and device thereof that prevents that automobile from sliding on the ramp

[technical field]

The present invention relates to a kind of method and device thereof that prevents that automobile from sliding on the ramp, particularly a kind of automatic speed changer for machine that is applicable to the Vehicle Electronic Control formula perhaps prevents method and the device thereof that automobile slides on the hand-operated transmission on the ramp.

[background technology]

Automobile in the process of moving, because road conditions is complicated and changeable, often there is the problem of more or less ignoring easily in the design of automobile, wherein just comprise such situation: promptly vehicle starts at uphill way, because of power-transfer clutch from being separated to joint, can slide backward in the time of can automobile being started to walk on the ramp because of power interruption, chaufeur will just can be avoided gliding usually by the cooperation of Das Gaspedal, parking brake or service brake.Like this, on the abrupt slope, hill path, the starting of going up a slope has certain potential safety hazard.Equally, vehicle is in the reversing of descending highway section, and car body then can still need just can be avoided by the cooperation of Das Gaspedal, parking brake or service brake to front slide, also has certain potential safety hazard.

At present, the automatic transmission with hydraulic torque converter of the hydraulic moment changeable formula that adopts (being called for short AT), because the effect of its hydraulic moment changeable can prevent automobile upward slope starting back skating as a rule, but AT system architecture complexity, the cost height is made difficulty; And the automatic machincal transmission (AMT) of hand-operated transmission that is adopted (MT) or electronic control type, because of self not improvement of design, so still there are the problems referred to above.

In addition, No. the 92237117th, Chinese patent " automobile upward slope backstopping device ", its technical scheme main points are: assemble ratchet-gear wheel on detent box; Connect lever dolly by fixed card on the car chassis support, ratchet lever one end that connects with manual unit is hinged on the lever dolly, and the other end is a dog point.Though this patent has solved the problem of upward slope retaining, if when automobile is positioned at the downhill path and requires reversing, this device can not the generation effect, and this device is mounted in a mechanism on the drg, be positioned at body exterior, environment for use is abominable, and reliability also is difficult to guarantee.

For this reason, for the hand-operated transmission (MT) commonly used or the automatic machincal transmission (AMT) of electronic control type, new technical scheme to be designed is arranged to address the above problem in fact.

[summary of the invention]

Technical matters to be solved by this invention is, a kind of method and device thereof that prevents that automobile from sliding on the ramp is provided, be applicable to automobile in the upward slope starting-up process, prevent to retreat, and the descending reversing process in prevent advancing slip.

For solving the problems of the technologies described above, a kind of technical scheme proposed by the invention is:

A kind of method that prevents that automobile from sliding on the ramp, it is characterized in that: on the bootom gear or reverse gearwheel of change speed gear box, add unidirectional locking arrangement, and make vehicle when hanging this low gear or reverse gear, imput shaft can only be done and be rotated in the forward, and is locking oppositely.

Another technical scheme proposed by the invention is:

A kind of device that prevents that automobile from sliding on the ramp is arranged in the change speed gear box, comprises range fork, bootom gear is characterized in that: described device also comprises connecting rod, little spring, slip, big spring, ratchet dish, and described device is installed on the bootom gear of change speed gear box, especially

Described bootom gear is the Retchet gear type bootom gear;

Described range fork is provided with a drift angle in its end;

Described connecting rod is installed on the gear box casing by a bracing frame, and it is connected with gear box casing by little spring over against an end of drift angle, and the other end then is connected on the slide block;

Described slide block, big spring are sleeved on the imput shaft, and an end of big spring is connected on the slide block, and the other end then is connected on the ratchet dish;

Described ratchet dish is that axial restraint is connected on the gear box casing, and its card is a disc type side direction ratchet;

Described Retchet gear type bootom gear, the card of its relative ratchet dish are the opposite disc type side direction ratchet in tooth position, thereby make the said two devices can be meshing mutually.

Another technical scheme proposed by the invention is:

A kind of device that prevents that automobile from sliding on the ramp is arranged in the change-speed box, comprises reverse gearwheel, it is characterized in that: described device comprises big spring, ratchet dish, and described device is installed on the reverse gearwheel of change speed gear box, especially,

Described reverse gearwheel is the Retchet gear type reverse gearwheel;

Described big spring is sleeved on the imput shaft, and an end direct connection of big spring is on gear-box case, and the other end then is connected on the ratchet dish;

Described Retchet gear type reverse gearwheel, the card of its relative ratchet dish are the opposite disc type side direction ratchet in tooth position, thereby make the said two devices can be meshing mutually.

The present invention has the following advantages:

This method and device thereof, its principle and simple in structure, safe and reliable, process easyly, with low cost, particularly suitable AMT also is applicable to MT.

[description of drawings]

Fig. 1 is the structural representation that is installed at this device on the bootom gear;

Fig. 2 is the running condition reference diagram that is installed at this device on the bootom gear;

Fig. 3 is the structural representation that is installed at this device on the reverse gearwheel;

Fig. 4 is the running condition reference diagram that is installed at this device on the reverse gearwheel.

[specific embodiment]

With reference to the accompanying drawings and in conjunction with the embodiments the present invention is made further instruction.

The invention discloses a kind of method and device thereof that prevents that automobile from sliding on the ramp, promptly on the bootom gear of AMT or MT change speed gear box and reverse gearwheel, install unidirectional locking arrangement additional, make vehicle when hanging this low gear, imput shaft can only be done and be rotated in the forward, and is locking oppositely.

See also Fig. 1, be installed at the unidirectional locking arrangement on the bootom gear, constitute by range fork 1, connecting rod 2, little spring 3, slide block 4, big spring 5, ratchet dish 6, Retchet gear type bootom gear 7, wherein, described range fork 1 is the improvement of control fork in original change-speed box, and it is provided with a drift angle 11 in the end; Described connecting rod 2 is installed on the gear box casing by a bracing frame 21, and it is connected with gear box casing by little spring 3 over against an end of drift angle 11, and the other end then is connected on the slide block 4, thereby makes connecting rod 2 form a leverage; Described slide block 4, big spring 5 are sleeved on the imput shaft, and an end of big spring 5 is connected on the slide block 4, and the other end then is connected on the ratchet dish 6; Described ratchet dish 6 is that axial restraint is connected on the gear box casing, in the process of imput shaft rotation, its can retainer shaft to maintaining static, still, but can carry out minute movement diametrically, and its card is a disc type side direction ratchet; Described Retchet gear type bootom gear 7 is similarly the improvement of original bootom gear, and the card of its relative ratchet dish 6 is the opposite disc type side direction ratchet in tooth position, thereby makes the said two devices can be meshing mutually.

In use, as shown in Figure 2, low gear range fork 1 moves, its drift angle 11 withstands on an end of connecting rod 2, and gradually it is depressed, at this moment, little spring 3 is compressed, by lever principle, slide block 4 is released big spring 5 and ratchet dish 6 under the drive of connecting rod 2, and meshes with Retchet gear type bootom gear 7.Under the situation of Retchet gear type bootom gear 7 normal transmissions, ratchet dish 6 can compress big spring 5 with conversion tooth position because of tooth position relation, and does not influence normal transmission; When Retchet gear type bootom gear 7 is desired contrarotation, and since locked by the tooth position of ratchet dish 6, and imput shaft can not be reversed, thus realized in the anti-function that retreats of going up a slope.

See also Fig. 3, be installed at the unidirectional locking arrangement on the reverse gearwheel, be made of big spring 8, ratchet dish 9, Retchet gear type reverse gearwheel 10, in addition, 12 is reverse speed fork among the figure.This device is that with the unidirectional locking arrangement difference that is installed on the bootom gear end direct connection of described big spring 8 is on gear-box case; Described Retchet gear type reverse gearwheel 10 is the improvement of original reverse gearwheel, and the card of its relative ratchet dish 9 is the opposite disc type side direction ratchet in tooth position, thereby makes the said two devices can be meshing mutually.

In use, as shown in Figure 4, reverse speed fork 12 moves, and drives Retchet gear type reverse gearwheel 10, and meshes with ratchet dish 9.Under the situation of Retchet gear type reverse gearwheel 10 normal transmissions, ratchet dish 9 can compress big spring 8 with conversion tooth position because of tooth position relation, and does not influence normal transmission; When Retchet gear type reverse gearwheel 10 is desired contrarotation, and since locked by the tooth position of ratchet dish 9, and imput shaft can not be reversed, thus realized in the anti-advancing slip function of descending.

The foregoing description just embodies the preferred version of technical solution of the present invention, those skilled in the art to wherein some part some changes that may make all embodied principle of the present invention, belong within protection scope of the present invention.

Claims

1, a kind of method that prevents that automobile from sliding on the ramp is characterized in that: on the bootom gear and reverse gearwheel of change speed gear box, add unidirectional locking arrangement, and making vehicle when hanging this low gear or reverse gear, imput shaft can only be done and be rotated in the forward, and is locking oppositely.

2, a kind of device that prevents that automobile from sliding on the ramp is arranged in the change speed gear box, comprise range fork, bootom gear is characterized in that: described device also comprises connecting rod, little spring, slip, big spring, ratchet dish, described device is installed on the bootom gear of change speed gear box, especially

Described bootom gear is the Retchet gear type bootom gear;

Described range fork is provided with a drift angle in its end;

3, a kind of device that prevents that automobile from sliding on the ramp is arranged in the change-speed box, comprises reverse gearwheel, it is characterized in that: described device comprises big spring, ratchet dish, and described device is installed on the reverse gearwheel of change speed gear box, especially,

Described reverse gearwheel is the Retchet gear type reverse gearwheel;