JPS58105828A - Electrical range change-over device of automatic transmission - Google Patents

Abstract

PURPOSE:To realize nimble change-over of the range and eliminate the operating lever for changing-over and consequently enlarge a car compartment space by a structure wherein a driving unit to actuate the hydraulically operated valve of a transmission is composed of electrically-driven means and a controlling unit to control the operation of said electrically-driven means. CONSTITUTION:A worm 3 is coupled through a coupling 2 to the roary shaft of an electric motor 1. The rotation of said worm 3 is transmitted through gears 5 and 7 to a sector 8 rotatably fitted onto the shaft 10 of a bracket 9 formed in a fixed member. Said sector 8 can engage with an arm 11 rotatably fitted onto the shaft 10 by means of a lock pin 12. A sector gear 11a, with which a stopper 13 is engaged, is formed on said arm 11, to which a wire to a operate the hydraulically operated valve in the transmission is connected and also a position sensor 16 to detect the position of the arm 11 is provided and further a solenoid 17 to engage with a projection 11c formed on the arm 11 is provided. The operation of the motor 1 is controlled by means of a controlling circuit, in which the sensor 16 and the solenoid 17 are contained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric range switching device for an automatic transmission, and more specifically, the present invention relates to an electric range switching device for an automatic transmission. The present invention relates to an electric range switching device for an automatic transmission in which each selected range can be changed by operating a switch using a drive system device comprising a drive system device and an electric system device that controls the operation of the drive device.

Conventionally, in semi-automatic and other automatic transmissions in automobiles, the operation of each gear is automated, but the driver must manually switch between each range such as drive range, reverse range, parking range, etc. using a control lever. It is common to do this, and when you operate the control lever, the hydraulic valve inside the transmission is activated by wire goople etc. activate it,
Range switching is performed. Since such a device is of purely mechanical construction, a certain amount of force is required to operate the operating lever. Therefore, it is even more desirable to improve drivability by reducing range switching operations.

In view of the above-mentioned needs, the present inventor has constructed the present invention to effectively solve the above-mentioned needs, and the object of the present invention is to:
Most of these devices have a conventional automatic transmission with a motor worm gear, etc., and are installed to make it possible to easily switch ranges by turning on a switch. The goal is to provide the following.

An object of the present invention is to remove the operating lever for changing the range of an automatic transmission from the interior of the vehicle, and to install a smart device, which is an electric means, at an appropriate location in the vehicle, thereby increasing the space inside the vehicle and improving the comfort of the vehicle. An object of the present invention is to provide an electric range switching device for an automatic transmission that can be improved.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 shows a drive system device I~, 1 is a motor as a drive source, a coupling member 2 is connected to the rotating shaft of the motor 1, and a worm 3 is supported at both ends by a fixed member.
are joined at one end. An electromagnetic brake 4 is provided at the other end of the worm 3.

3-5 is a worm wheel, and the worm wheel 5 meshes with the worm 3. This worm gear mechanism either transmits power from the motor 1 or does not transmit power to the motor 1. It has a so-called self-locking mechanism. A smaller diameter gear 7 is further fixed to the shaft 6 of the worm wheel 5.
This gear meshes with sector 8. The sector 8 is rotatably attached to a shaft 10 attached to a bracket 9 formed on a fixed member, and an arm 11 is further rotatably attached to this shaft 10. Normally, the arm 11 and the sector 8 are detachably attached. They are coupled by a lock pin 12 so that they can move together.

The arm 11 has a stopper 1 at a portion corresponding to the two sides in the figure.
A diagonal concavo-convex portion 11a that engages with the arm 11 is continuously formed, and a connecting portion 11b is formed on the left side of the arm 11 to be connected to a hydraulic valve inside the transmission and to be operated by the hydraulic valve 14.

The stopper 13 is a bracket 13 provided on the fixed member.
a and a spring 13 that is pivoted on the bracket 13a and
an arm 13c4- pulled downward by a protrusion 13 formed at the tip of the arm 13c;
When d fits into one valley of the concave and convex portion 11a of the arm 11, a stopper action occurs.4. In addition, the wire 14 (-) was conventionally connected to an operating lever, and by operating (-), the wire 14 was pushed and pulled, and the hydraulic valve was connected via the wire 14'Y. The range (v) was controlled to be changed inside the transmission. Reference numeral 15 is a pipe member for guiding the wire 14 to the hydraulic valve in the transmission and for protecting the wire.

Reference numeral 16 denotes a position sensor, and one end of the position sensor 16 is pivotally connected to a fixed member, and the other end is connected to the arm 11. The position sensor 16 detects the position of the arm 11 that rotates with the rotation of the sector 8, thereby detecting whether the wire 14 has been controlled to the desired range position, and stops the operation of the drive device. It has a function to output a signal for filtering. .

Reference numeral 17 denotes a lunoid, and the lunoid 17 has the function of restricting the rotation of the arm 110 by engaging with a protrusion 11c formed on the arm 11 when the lunoid 17 is operated under predetermined conditions. Reference numeral 18 is a lever provided on the arm 11, and in an emergency, the arm 11 can be directly rotated to manually change the range from I to J. This is to make it more convenient.

In Figure 2, is the operation of the drive system described above? Shows electrical equipment for control. Reference numeral 19 denotes a switch group for instructing the operation of the motor 1, which is a drive source, and the switch group includes a parking switch 19a and a reverse switch 19b.
, a neutral switch 19c1, an overdrive switch 19d, a drive switch 19e, and a low speed switch 19f.

The user switch is a pushbutton-like switch that can be operated with a light touch. The output of each switch 19a to 19f is connected to the input of the determiner 20. 16 is a position sensor, and the position sensor 16 detects the required displacement of the arm 11 when the motor 1 is operated by operating the switches 19a to 19f, and generates a signal for instructing the motor 1 to stop and the electromagnetic brake 4 to operate. Output. The position sensor 16 has an output corresponding to each range, and is connected to the determiner 20, respectively.

21 is a vehicle speed sensor, and the output from the vehicle speed sensor 21 is input to the determiner 20 and the second determiner 22. The output of the second determiner 22 is the solenoid 1
7 is connected.

The output side of the determination device 20 includes a driving motor 1, an electromagnetic brake 4, an alarm lamp 23 to notify that the parking switch 19a or the reverse switch 19b is turned on while driving, and a warning lamp 23 to notify when a failure occurs. A warning lamp 24 is provided to notify this.

Further, 25 is an ignition switch, and 26 is a starter motor. The ignition switch 25 and the starter motor 26 are connected through 16 position sensors, and when the position sensor 16 is in a predetermined state that allows engine starting. The structure is such that the starter motor 26Y can be driven only by the ignition switch 25.

In FIG. 2, 27 is a battery, and 28 is a main switch.

Next is the above configuration? The operation of the electric range switching device will be explained below.

Main switch 28 turned on, neutral switch 1
If the ignition switch 25 is turned on with 9cY turned on, the position sensor 16 is in a state that allows engine starting, so the starter motor 26 is operated and the engine is started.

Next, the vehicle shifts to a running state, and in this case, the drive switch 19e'Y is turned on. In this way, current is supplied to the motor 1 via the determiner 20 and the motor 1 rotates, thereby causing the worm 3 to rotate, and then the worm wheel 5 meshing with the worm 3 to rotate. If the worm wheel 5 rotates, the lock pin 12 will lock the worm wheel 5.
An arm 11 coupled to the worm wheel rotates together with the worm wheel. In this case, it rotates in the direction of one rotation in FIG. When the arm 11 rotates in the clockwise direction, the wire 14
This will control the hydraulic valve inside the transmission. The position sensor 16 that detects the position of the arm 11 detects that the hydraulic valve in the transmission is in the drive range state. When the arm 11 reaches a predetermined position to be controlled, the position sensor 16 generates a certain signal state related to the drive range, and outputs this to the determiner 20. When the determiner 20 receives this signal, it stops supplying current to the motor 1 and stops the motor 1, and also supplies current to the electromagnetic brake 4 to operate the electromagnetic brake, thereby suppressing the inertia of the motor 1 and causing the motor 1 to stop rapidly. to stop its rotation. In this way, the hydraulic valves are controlled with good precision and switching to the drive range is performed.

The stopper 13 is connected to the protrusion 13d of the arm 13c and the arm 11.
By holding the concave and convex portions 11a of the arm 11 in place and pressing the arm 11 downward when the arm 11 rotates, the arm 11 is prevented from moving due to play caused by the backlash of the gear.

The operations of the operation switch, electric circuit, and drive device described above are the same for other ranges.

In addition to the above, the above-mentioned solenoid 17 and L/bar 18 are provided to enhance the functionality of the electric range switching device.

The solenoid 17 is connected to a vehicle at a general vehicle speed (for example, 10 km
/h) or more, I accidentally turned the parking switch 19 while driving.
Although the motor 1 is not operated when the reverse switch 19b is turned on or the reverse switch 19b is turned on, this is to prevent the arm 11 from moving even if the motor 1 is activated for some reason. Therefore, if the signal given from the vehicle speed sensor 21 to the determiner 22 indicates that the vehicle speed is equal to or higher than the set vehicle speed, the determiner 22 supplies a current to operate the solenoid 17. In this case, even if the arm 11 rotates and attempts to move to the parking range or the reverse range, the plunger of the solenoid 17 will not have the protrusion 11c.
Because they touch each other, it does not become a parking range or a reverse range. In terms of circuitry, the motor 1 is configured with a determiner 22 different from the determiner 20 of the motor 1, and its operation is ensured.

The lever 18 provided on the arm 11VC is used to manually switch the range in the event that a problem occurs and the switch cannot be operated.In this case, the lock pin 12 must be removed. As a result, the coupling relationship between the arm 11 and the sector 8 is released, and the range is changed by operating the arm 11 with the lever 18.

FIG. 2 shows a modified embodiment of the drive device.

In this embodiment, a tooth portion 29a that engages with the worm 3 and functions as a worm wheel is provided on the circumferential portion of a disc-shaped member 290, and a continuous uneven portion 29 that engages with the stopper 30.
b is formed. According to this implementation νUK, the configuration becomes simple, the number of parts can be reduced, and manufacturing can be performed at low cost. Reference numerals 16 and 14 are the position sensors and wires described in the first embodiment, and the same reference numerals as in the above embodiment are given to other elements.

As is clear from the above description and description, according to the present invention, it is possible to electrify range switching extremely easily and at a low cost per month without making any changes to the conventional automatic transmission mechanism provided in automobiles. As a result, it is possible to facilitate the range switching operation of an automatic transmission, improve its operability and ease of handling, and improve the agility of driving a car.

In addition, it is mechanically simple, using a unidirectional power transmission structure that only transmits power from the drive source to the wire, or a self-locking mechanism, and maintains a high level of reliable operation. Extremely deep consideration has also been given to its safety, and it will greatly contribute to semi-automated car driving. 51 In terms of space, the conventional control lever can be removed and the drive system can be installed at an appropriate location in the vehicle, increasing the space inside the vehicle and improving the comfort of the vehicle. It is effective and the practical effect is remarkable.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, FIG. 1 is a diagram showing the configuration of the drive system device, FIG. 2 is a circuit diagram showing the configuration of the electrical system device, and FIG. 3 is a modified embodiment of the present invention. FIG. 1 is a diagram similar to FIG. 1 according to FIG. In the drawings, 1 is a motor, 3 is a worm, 4 is an electromagnetic brake, 5 is a worm wheel, 8 is a sector, 11 is an arm, 12 is a lock bin, 13 is a stopper, 14 is a wire, and 16 is a position sensor. Patent applicant Honda Motor Co., Ltd.

Claims (1)

[Claims] In automatic transmissions for automobiles that change ranges by controlling hydraulic valves using wires connected to hydraulic valves in the transmission, a drive motor and a power connected to the above wires and having a drive motor and a self-locking mechanism. It consists of an arm that is interlocked by a transmission means and a sensor that detects changes in the position of the drive system.The drive motor is activated by operating an electric switch, and the drive motor is stopped by the output of the sensor. An electric range switching device for an automatic transmission, characterized in that the hydraulic pulp is controlled to a predetermined range.