KR960010522Y1 - Transmission operation device of automatic transmission for vehicle - Google Patents

Abstract

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Description

Transmission operation device of automatic transmission for vehicle

1 is a schematic configuration diagram of a shift control apparatus according to the present invention.

2 is a block diagram of a driving range selection unit according to the present invention.

FIG. 3 is an explanatory diagram illustrating a state in which a current signal is input to the control unit by the driving range selection unit of FIG. 2.

4 is a control flow diagram of a step motor programmed in a control unit according to the present invention.

5 is a driving logic circuit diagram of a step motor of a driving range output unit according to the present invention.

6 to 7 are a plan view and a front view of the driving range output unit according to the present invention.

8 is a schematic configuration diagram of a shift control apparatus according to the prior art.

9 is an enlarged cross-sectional view of the main portion of FIG.

10 is a front view of FIG. 9. FIG.

* Explanation of symbols for main parts of the drawings

1: driving range selector 2: steering wheel

3: misoperation prevention switch 4: driving range selection switch

4a: P range selector switch 4b: R range selector switch

4c: N range selection switch 4d: D range selection switch

4e: S-range selection switch 4f: L-range selection switch

10: control unit 20: driving range display unit

30: driving range output unit 31: valve body

32: step motor 33: cam guide

34: support plate 40: transmission control unit

51: shift selector 52: cable

53: manual valve spring 54: connection bracket

55: driving range switch 56: manual shaft

57: rotating plate 57a: fixed side

58: guide 59: transmission input unit

The present invention relates to a shift control device of an automatic transmission for a vehicle. In particular, the range selection unit driven so that the driver can directly select a driving range by hand is simple in structure with a plurality of button switches corresponding to each driving range. The present invention relates to a shift control apparatus for an automatic transmission for a vehicle that not only makes it easy to select a driving range but also reliably inputs a selected driving range into an automatic transmission.

Currently, the automatic transmission has a manual valve for controlling the flow direction of the hydraulic oil to the 1-2 speed shift valve, the 3-4 speed shift valve and the clutch cylinder through a plurality of flow paths. As shown in FIGS. 8 to 10, the shift control device of the automatic transmission that operates up and down according to the selected driving range includes a shift selection lever 51 which allows the driver to directly hold the shift and select a shift range. And a rod or cable 52 which is connected to one side of the shift selection lever 51 via a plurality of components via the shift selection lever 51 and is moved back and forth or up and down, and the cable 52 and It is composed of a transmission input unit 59 disposed between the manual valves to convert the movement of the cable 52 to the vertical movement of the manual valve spring 53.

Here, as shown in FIGS. 9 to 10, the transmission input device unit 59 has a connection bracket 54 in which one side of the cable 52 is screwed, and a lower side of the connection bracket 54. The driving range switch 55, which is arranged in the driving range and converts the driving range selected by the driver into an electrical signal and inputs it to a transmission control unit (not shown), the driving range switching switch 55 and the connecting bracket 54 Manual shaft 56 installed so as to pivot through the shaft, the rotary plate 57 screwed to the lower portion of the manual shaft 56, and the rotary plate 57 is riveted to a portion slightly away from the center of rotation The guide 58 is fitted to the fixed side 57a and to which the sprue 53 of the manual valve is connected.

Therefore, when the driver holds the shift selector 51 by hand and rotates it to shift to a desired shift range, the cable 52 connected to the shift selector 51 is moved back and forth, and the connection bracket 54 ) Rotates as much as the linear movement amount of the cable 52, and as the connecting bracket 54 is axially rotated, the connecting bracket 54 and the fixed manual shaft 56 are rotated by the connecting bracket 54. Will be rotated by.

As described above, when the manual shaft 56 is rotated at a predetermined angle with respect to the center of rotation thereof, the electric signal generated by the traveling range switch 55 is input to the transmission control unit according to the amount of rotation to control the selected driving range. It will be recognized, and the rotating plate 57 fixed to the bottom of the manual shaft 56 is also rotated by the same amount as the manual shaft 56, in this case, the fixed shaft 57a riveted to one side of the rotating plate 57 The guide 58 having a cross-section L-shape is also rotated about the fixed shaft 57a so that the sprue 53 of the manual valve connected to one end of the guide 58 is moved up and down. The oil pressure flow rate of the automatic transmission is converted to a desired driving range.

However, as described above, the conventional shift control apparatus ranges from a shift selection lever 51 in which a driver can directly select a driving range by hand, to a guide 58 for directly operating a manual valve of an automatic transmission. Many parts are connected by a mechanical mechanism, which is difficult to assemble due to the complicated structure of the mechanism, and there is a problem that the driving range desired by the driver cannot be correctly selected by the assembly error, In a narrow engine room or front engine front wheel drive type, the road or cable has a complicated shape, and thus a problem that the driving range cannot be selected as the driver wants is further intensified.

The present invention has been devised to solve the above problems, and the driver can easily select a desired driving range with a simple operation. It is an object of the present invention to provide a shift control device of an automatic vehicle automatic transmission.

The present invention for achieving the object of the above bar, the driving range selection unit having a driving range selection switch consisting of a plurality of button switches to select the wrong operation prevention switch and the driving range attached to the driver's handle: It judges the driving range by receiving the electric signal according to the selected driving range by the ON / OFF status value of the erroneous operation prevention switch and when the erroneous operation prevention switch is OFF, it prevents the range change from being made. A control unit configured to output a predetermined control current according to the step motor; The driving range display unit is configured to indicate a driving range by flashing a lamp based on a control signal output from the control unit, and is fixed to the step motor, and a manual valve spun inside the transmission is connected to rotate the step motor. The cam guide is configured to switch to the linear motion of the wool, and the screw is coupled to one side of the valve body and the other side is fixed to the step motor to support the step motor. The control signal output from the control unit is selected to be selected. The driving range output part is designed to operate the manual valve spun of the transmission according to the driving range. The structure is simple and the automatic transmission operates the manual valve spun correctly according to the driving range selected by the driver.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the shift control apparatus of the automatic transmission according to the present invention may not only allow the driver to directly select the driving range by hand but also output an electric signal according to the selected driving range. (1) and a control unit 10 which receives the electric signal output from the traveling range selecting unit 1 to determine the traveling range and then outputs a predetermined control signal; A driving range display unit 20 connected to the control unit 10 and allowing the driver to easily recognize the driving range selected through a flashing lamp; The control unit 10 is also connected to the control unit (TCU; 40) of the automatic transmission, while the control unit 10 is configured to operate the manual valve of the automatic transmission to match the selected driving range. The control unit 40 can recognize it.

Here, the driving range selection unit 1 is composed of a misoperation prevention switch 3 and a driving range selection switch 4 attached to the driver's handle 2 as shown in FIG. have.

At this time, the erroneous operation prevention switch (3) is a safety switch that prevents the range change in case of danger to the automatic transmission or dangerous when changing the driving range. In other words, for example, when changing from the P range to the R range, even if the R range selection switch is pressed, the driving range is displayed as the driving lane display unit 20 as P, and the automatic transmission is maintained in the P lane state. In this case, when the misoperation prevention switch 3 is pressed once, the driving safety function is released and the driving range is changed to the R range, so that an excessive force caused by a sudden driving range change is not caused to the transmission.

The driving range selection switch 4 is, for example, a P range selection switch 4a, an R range selection switch 4b, an N range selection switch 4c, a D range selection switch 4d, and an S range selection switch ( 4e) and an L range selection switch 4f, wherein the travel range selection switch 4 and the erroneous operation prevention switch 3 correspond to the control unit 10 as shown in FIG. The range selection switches 4a, 4b, 4c, 4d, and 4f are connected to each other via a terminal, and each of the range selection switches 4a, 4b, 4c, 4d, and 4f is input to the control unit 10 by generating a control current signal having different current values. The control unit 10 can recognize the driving range selected by the driver through the control current value corresponding to each range.

On the other hand, the control unit 10 comprises a driving range determination unit, an input circuit unit, a distribution circuit unit and an amplification circuit unit, where the driving range determination unit is output from each range selection switch 4a, 4b, 4c, 4d, 4f. The driving range is judged based on different current values. For example, when the P-range selection switch 4a is turned on, a voltage of 1 volt V is applied to the control unit 10, and the sequentially selected switches are pressed. Whenever the voltage rises by 1 (V) is applied to the Zener Unit 10, when the L range select switch 4f in the final position is turned ON, a voltage of 6V is applied. The driving range selected by the current value is determined, and the control current value is applied to the step motor of the driving range output unit, which will be described later, according to each of the selected driving ranges. By moving the sprue of 3) back and forth, the oil pressure circuit inside the automatic transmission is converted in accordance with the driving range selected by the driver.

Here, the control software of the step motor for driving the step motor appropriately to match the driving range selected by the driver is programmed in the control unit 10. After reading and comparing the ON / OFF state values of the travel range selection switch, a predetermined control current value corresponding to each travel range is output.

That is, as shown in FIG. 4, in the initial procedure 100 and the procedure 101, the P range selection switch is read by reading the ON / OFF state values of the respective driving range selection switches 4a, 4b, 4c, 4e, and 4f. When (4a) is ON, the parameter N is set to 1, and when the L range selection switch 4f is ON, N is set to 6.

Subsequently, in steps 102 and 107, it is determined whether the value of the parameter N set above is 3, 4, or 5, and then the parameters as in steps 103, 105, and 107. By outputting the value of N, the predetermined control current value corresponding to the value of N is amplified by the amplifying circuit part and applied to the step motor, so that the step motor is rotated at a predetermined angle in accordance with each driving range.

Subsequently, in step 108, when the value of the parameter N is not 3, 4 or 5, the ON / OFF state value of the misoperation prevention switch 3 is read, and in step 109, the misoperation prevention switch ( 3) is determined to be ON. In this case, when it is not ON, the driving range is drastically changed, and the procedure 110 is continued to prevent the driver from overloading the vehicle. A value of N is outputted so as to maintain the current running range, and in the step 109, when the misoperation prevention switch 3 is ON, the steps 111, 113, and 115 are performed. After determining whether the value of each parameter N is 1, 2, or 6, the value of each N is output from the control unit, and a predetermined control current corresponding to the value of N is applied to the step motor so that a predetermined angle is obtained. Will be rotated.

In addition, the input circuit unit is a circuit unit for adjusting the input pulse waveform when the input pulse is input to the distribution circuit unit to set the peak value of the input pulse, the width of the pulse, rise and fall time, etc. It is a circuit that decomposes the input signal pulse string into each phase, and has six distribution circuits and a digital IC integrated circuit. The amplification circuit portion is a driving circuit portion that receives an electric signal distributed in each phase to a step motor which will be described later. It is a circuit that amplifies and distributes the current required to apply the current.

For example, when the driving range is changed to the L range while the current driving range is the P range, when the L range selection switch 4f is pressed, the current output from the L range selection switch 4f into the control unit 10 is changed. A signal is inputted, and a logic circuit using an IC integrated circuit is formed by the inputted electrical input signal, and the current of each phase is controlled by the switches of S1, S2, S3, S4, S5, and S6 as shown in FIG. In this case, first S1 is input to generate a current so that the step motor rotates by 15 ° while the step motor is rotated by 15 ° so as to be rotated by 90 °.

On the other hand, the driving range output unit 30 is attached to one side of the valve body 31, as shown in Figures 6 to 7 showing a plan view and a front view through the amplification circuit portion of the control unit 10 The step motor 32 rotates in steps of 15 ° with the amplified control current signal, and the step motor 32 is fixed to the step motor 32 and rotates together with the step motor 32. Cam guide 33 is connected to the spun 53 to move the spun 53 in the up and down direction, and the other side is screwed to the valve body 31 and the step motor 32 and the other screw It is composed of a support plate 34 coupled.

Therefore, when the driving range selected by the driver is converted into the predetermined control current through the control unit 10 and then applied to the step motor 32 through its amplification circuit section, the step motor 32 is applied. As the control current amount is rotated by 15 °, the cam guide 33 fixed to the step motor 32 is also rotated clockwise or counterclockwise with the same rotation amount as the step motor 32. The sprue 53 of the manual valve connected to the cam guide 33 is moved in a linear direction corresponding to the rotation amount of the cam guide 33. In this case, the step motor 32 and the cam guide 33 are moved. The maximum rotation angle is 90 ° as in the case of converting from the P range to the L range or from the L range to the P range.

For example, when the driver wants to change the driving range from the P range to the L range, when the N range selection switch 4f is pressed, the control unit 10 selects the N range selection switch 4f. The N driving range is determined based on the electric signal outputted from the device, and the value of N is output through the step motor control flow chart. At the same time, the lamp corresponding to N of the driving range output unit 20 is turned on. The step motor 32 is rotated at an angle of 30 ° as it outputs a predetermined control current to the driving range output unit 30 and applies it to the step motor 32. In addition, the cam guide 33 is also rotated at an angle of 30 degrees with the step motor 32, so that the sprue of the manual valve 53 connected to the cam guide 33 is rotated 30 degrees of the cam guide 33. Automatic shift to move up and down to match the whole quantity The machine is converted to the N driving range state.

As described above, the shift control apparatus according to the present invention has a traveling range selector composed of seven selection switches, which not only makes the structure simple but easily selects the driving range, and also accurately inputs the selected driving range into the automatic transmission. The effect is that the change is made.

Claims (1)

(Correction) Equipped with a driving range selection switch (4) consisting of a plurality of button switches to select a driving range and a misoperation prevention switch (3) attached to the driver's handle (2). The driving range selector 1 and the driving range selection unit 1 to output different electric signals according to the pressing: The driving range is input by receiving ON / OFF state values of the misoperation prevention switch 3 and electric signals according to the selected driving range. A control unit 10 configured to output a predetermined control current according to the selected driving range while preventing the range change from being made when the misoperation prevention switch 3 is turned off; The driving range display unit 20 is configured to indicate a driving range by blinking a lamp based on the control signal output from the control unit 10, and a step motor configured to receive a control current from the control unit 10 ( 32) The cam guide 33 and the valve body 31, which are fixed and connected to the manual valve spun 53 inside the transmission, convert the rotational motion of the step motor 32 into linear motion. The other side is screwed and the other side is fixed to the step motor 32 has a support plate 34 for supporting the step motor 32 and receives the control signal output from the control unit 10 to match the selected driving range A driving range output unit 30 configured to operate the manual valve spoul 53 of the transmission; Transmission operation apparatus of the vehicle automatic transmission, characterized in that consisting of.