A domain-integrated push-rod type electronic shifter with a P button placed on the handball

Abstract

The present invention relates to the technical field of automobile automatic shifters, and specifically to a domain-integrated push-rod type electronic shifter with a P button placed on a handball. A domain-integrated push-rod type electronic shifter with a P button placed on a handball comprises a shifter housing, a joystick is arranged in the shifter housing, a handball assembly connected to the joystick is arranged on the upper part of the joystick, a P button is arranged on the handball assembly, a magnet bracket is arranged at the lower part of the joystick, the P button is connected to the magnet bracket, a magnet is arranged on the side of the magnet bracket, a shift circuit board is arranged in the shifter housing, and a 3D Hall sensor is arranged at a position corresponding to the magnet on the shift circuit board. The benefits of the present invention are as follows: the core rod installed in the joystick is driven by pressing the P button on the handball assembly to drive the magnet bracket, and the 3D Hall sensor directly outputs a P gear signal through PWM through sensor calibration through the change of the magnet position. The P signal, like other gear signals, can be directly sent to the TCU in the form of PWM by the sensor within the duty cycle range of 4% to 96%.

Description

Technical Field

[0001] The invention relates to the technical field of automobile automatic shifters, in particular to a domain-integrated push rod type electronic shifter with a P button disposed in the middle of a hand ball. Background Art

[0002] The domain-integrated electronic shifter currently on the market is a TCU peripheral. Sending PWM to the TCU through the sensor can ensure the reliability of signal transmission, so the MCU processing for the gear position is omitted on the circuit board, simplifying the design and reducing costs. However, due to the limitation of the number of signal lines reserved by the TCU for the shifter end, only PWM1 and PWM2, the P gear signal output in the form of a button on the electronic shifter can only be achieved by pulling down or pulling up PWM1 and PWM2. Without MCU, PWM waves cannot be generated, and can only be 0% or 100%. For the sensor, the two areas of <4% and >96% are used for the fault diagnosis signals of the sensor itself. Such a P gear button design, on the one hand, occupies the <4% and >96% fault diagnosis channels, cannot realize the processing of sensor diagnostic signals, and may mistake the fault diagnostic signal for the P signal, causing errors. On the other hand, if the P gear button is stuck, it will damage the sensor. Summary of the invention

[0003] In order to solve the technical problems of the P gear signal of the above-mentioned existing domain-integrated electronic shifter occupying the fault diagnosis channel and the P gear button getting stuck and easily damaging the sensor, the present invention provides a domain-integrated push rod type electronic shifter with a P button placed on the handball.

[0004] The technical solution of the present invention is as follows:

[0005] A domain-integrated push-rod type electronic shifter with a P button placed on a handball, comprising a shifter housing, a joystick arranged in the shifter housing, a handball assembly connected to the joystick arranged on the upper part of the joystick, a P button arranged on the handball assembly, a magnet bracket arranged on the lower part of the joystick, the P button connected to the magnet bracket, a magnet arranged on the side of the magnet bracket, a shift circuit board arranged in the shifter housing, a 3D Hall sensor arranged at a position corresponding to the magnet on the shift circuit board, pressing the P button drives the magnet bracket to move, and the PWM output of the P gear is realized by the position change between the magnet and the 3D Hall sensor, and the output of other fixed gears also realizes PWM output through the predetermined position of the magnet and the 3D Hall sensor.

[0006] A core rod is arranged inside the joystick, the upper part of the core rod is connected with the P button, and the lower part of the core rod is in contact with the magnet bracket.

[0007] The magnet bracket is movably connected to the joystick, a contact inclined surface is provided in the middle of the magnet bracket, the lower end of the core rod contacts the contact inclined surface and pushes the magnet bracket to move leftward, driving the magnet to move closer to the 3D Hall sensor.

[0008] The magnet bracket is movably connected to the operating rod through a connecting column, and a spring is arranged between the connecting column and the operating rod.

[0009] The lower part of the joystick is horizontally penetrated to form a magnet bracket installation position, and the two sides of the magnet bracket installation position are penetrated to form a connecting hole. The magnet bracket is movably installed in the magnet bracket installation position, the connecting column is movably installed in the connecting hole, and the spring sleeve is arranged outside the connecting column.

[0010] The left part of the magnet bracket extends upward to form a limit block, and the limit block contacts and limits the joystick.

[0011] The lower end of the core rod is in the form of a hemispherical surface, and both the lower end of the core rod and the contact inclined surface are smooth surfaces.

[0012] A spring is arranged between the core rod and the operating rod.

[0013] A signal collection module connected to the shift circuit board is provided below the shift circuit board, the 3D Hall sensor is vertically arranged on the right end surface of the signal collection module, and the magnet at the corresponding position is vertically arranged on the left part of the magnet bracket.

[0014] The technical solution of the present invention has a novel structure and ingenious design. The core rod installed in the joystick is pressed down by the P button on the handball assembly to drive the magnet bracket. The sensor is calibrated by the change in the position of the magnet. Since the 3D Hall sensor directly outputs the P gear signal through PWM, the P signal can be directly sent to the TCU in the form of PWM by the sensor within the duty cycle range of 4% to 96% like other gear signals, without occupying the fault diagnosis output pulse width of the sensor itself in the area of ​​<4% and >96%, and there will be no problem of false triggering of the P signal caused by the output fault PWM signal. Moreover, the P signal does not directly pull down or pull up the PWM signal, and long-term triggering will not damage the sensor, and the overall reliability is better. The design of the present invention uses a purely mechanical form, with low cost and high reliability, and the form of the P button integrated in the handball assembly is easily accepted by the public. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the shell structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the present invention;

[0017] Figure 3 It is a structural cross-sectional view of the present invention;

[0018] Figure 4 It is a structural cross-sectional view of the present invention;

[0019] Figure 5 It is a partial structural schematic diagram of the present invention;

[0020] Figure 6 It is a partial structural schematic diagram of the present invention;

[0021] Figure 7 is a schematic diagram of the gear setting of the present invention;

[0022] Figure 8 It is a schematic diagram of the gear position signal processing of an existing non-domain integrated electronic shifter;

[0023] Fig. 9 It is a schematic diagram of the gear position signal processing of the domain integrated electronic shifter of the present invention;

[0024] Fig.10 It is a schematic diagram of the gear distribution of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 7As shown, the present invention provides a domain-integrated push rod type electronic shifter with a P button placed on a hand ball, comprising a shifter housing 1, a joystick 2 is arranged inside the shifter housing 1, the joystick 2 is movably connected to the shifter housing 1 through a conversion block 15, the joystick 2 is smoothly displaced forward, backward, left and right in the shifter housing 1, a hand ball assembly 3 is arranged above the joystick 2, the hand ball assembly 3 is fixedly mounted on the upper end of the joystick 2, a P button 4 is arranged in the middle of the surface of the hand ball assembly 3, the middle of the surface of the hand ball assembly 3 is recessed to form a mounting hole, the P button 4 is movably arranged in the mounting hole, and a core is arranged inside the joystick 2 Rod 9, core rod 9 can move up and down in the joystick 2, and the side wall of core rod 9 is provided with two limit rings 16, and the limit ring 16 contacts with the inner wall of joystick 2, so as to limit the left and right displacement of core rod 9, and prevent core rod 9 from shaking left and right in joystick 2, thereby destroying the shifting feel and causing unnecessary abnormal noise. A spring 10 is provided between core rod 9 and joystick 2, and the lower side wall of core rod 9 bulges outward to form a convex ring 17, and the inner diameter of the lower end of joystick 2 becomes smaller to form a spring limit part, and the upper end of spring 10 contacts with convex ring 17, and the lower end of spring 10 contacts with the spring limit part, and spring 10 contacts with the spring limit part. The core rod 9 provides an upward restoring force to help the core rod 9 return to its original position after the action. The P button 4 is fixedly installed on the upper end of the core rod 9. A magnet bracket 5 is provided at the lower part of the joystick 2. The magnet bracket 5 is movably connected to the joystick 2. The magnet bracket 5 is movably connected to the joystick 2 through two connecting columns 12. The lower part of the joystick 2 is horizontally penetrated to form a magnet bracket installation position. The two sides of the magnet bracket installation position are penetrated to form a connecting hole. The magnet bracket 5 is horizontally movably installed in the magnet bracket installation position. The connecting column 12 is movably installed in the connecting hole. A spring 1 is provided between the connecting column 12 and the joystick 2. 0, the spring 10 is sleeved outside the connecting column 12, and the spring 10 provides a rightward restoring force to the magnet bracket 5 to help the magnet bracket 5 return to its original position after the action. The left part of the magnet bracket 5 extends upward to form a limit block 13, and the limit block 13 contacts and limits the joystick 2 to limit the displacement of the magnet bracket 5 to the right in the initial state. A contact inclined surface 11 is provided on the upper surface of the middle part of the magnet bracket 5, and the lower end of the core rod 9 contacts the contact inclined surface 11. The lower end of the core rod 9 is a hemispherical surface, and the lower end of the core rod 9 and the contact inclined surface 11 are both smooth surfaces, ensuring that the core rod 9 can smoothly drive the magnet bracket 5 to move.

[0027] A shift circuit board 7 is horizontally arranged in the shifter housing 1, and the shift circuit board 7 has an opening in the middle, and the joystick 2 is arranged through the opening. A signal collection module 14 connected to the shift circuit board 7 is arranged below the shift circuit board 7, and a 3D Hall sensor 8 is arranged on the signal collection module 14. A magnet 6 is arranged on the magnet bracket 5. The 3D Hall sensor 8 is vertically arranged on the right end face of the signal collection module 14, and the magnet 6 is vertically arranged on the left part of the magnet bracket 5. The position of the magnet 6 corresponds to that of the 3D Hall sensor 8.

[0028] When it is necessary to engage the P gear, press the P button 4, the core rod 9 drives the magnet bracket 5 to move, pushes the magnet bracket 5 to move to the left, and drives the magnet 6 to move closer to the 3D Hall sensor 8. Due to the change in the position of the magnet 6, the magnetic flux also changes. After the 3D Hall sensor 8 senses the change in magnetic flux, it outputs the duty cycle through 2-way PWM according to the pre-calibrated gear information. When the P button 4 is released, the magnet bracket 5 moves in the opposite direction of the 3D Hall sensor 8 under the restoring force of the spring 10 until the limit block 13 on the magnet bracket 5 is in place. At this time, the core rod 9 drives the P button 4 to return quickly under the dual force of the inclined component force of the magnet bracket 5 and the spring 10. When it is necessary to switch to other gears, turn the hand ball assembly 3, drive the joystick 2 to rotate, and drive the magnet 6 on the magnet bracket 5 to rotate. The PWM output is realized by the position change between the magnet 6 and the 3D Hall sensor 8, and the preset gear PWM output is realized at the predetermined position.

[0029] The present invention provides a domain-integrated push-rod type electronic shifter gear control system with a P button placed on a handball, a 3D Hall sensor 8 is fixedly installed at the lower part of a shift circuit board 7, and a magnet 6 installed at the lower part is driven by a joystick 2 to sense the 3D Hall sensor 8, and different gears are calibrated according to different positions of the magnet 6. The P gear signal drives the magnet 6 to move closer to the 3D Hall sensor 8 by pressing the P button 4, and the PWM output of the P gear is achieved by the position change between the magnet 6 and the 3D Hall sensor 8, and then the gear signal and the P gear signal are directly sent to the TCU through PWM, and the signal pulse width is in a commonly used signal area and does not occupy the fault diagnosis pulse width of the sensor itself, and the PWM output of a fixed gear in the range of 10%-90% is achieved by calibrating the duty cycle value defined for the 3D Hall sensor 8.

[0030] The domain-integrated push rod type electronic shifter joystick 2 provided by the present invention, in which the P button is placed on the handball, is fixed in the conversion block 15 by two axle pins 18, thereby realizing rotational movement in the front-rear direction. A magnet bracket 5 with a magnet 6 installed is movably arranged at the lower part of the joystick 2, and the magnet bracket 5 is positioned in the initial position by two springs 10, and realizes automatic return after being pressed down. The core rod 9 is placed inside the joystick 2 to drive the magnet bracket 5 to move in the direction of the 3D Hall sensor 8 by transmitting the downward pressure of the P button 4, and the spring 10 at the lower part of the core rod 9 is placed between the joystick 2 and the core rod 9 to provide driving force for the return of the core rod 9. The shifter housing 1 is divided into an upper shift bracket and a lower shift bracket, and the entire shift lever assembly is fixed by the upper shift bracket and the lower shift bracket to realize movement in the left-right direction, and the signal acquisition module 14 is also placed in the middle to realize the gear position signal acquisition between the magnet 6 and the 3D Hall sensor 8. The shift lever assembly realizes the gear positioning and shifting functions through the joint action of the bullet head assembly and the toothed plate assembly. The bullet head assembly includes a bullet head, a bullet head spring and a bullet head bushing. A dust cover is provided above the joystick 2, which is buckled onto the joystick 2, and the panel is buckled onto the upper shift bracket for decoration. The handball assembly 3 is snapped onto the joystick 2 to provide a medium for manipulation, and the P button 4 is placed at the center of the handball assembly 3 to transmit downward force.

[0031] The present invention drives the magnet bracket 5 by pressing down the core rod 9 installed in the joystick 2 through the P button 4 on the handball assembly 3, and the sensor is calibrated through the change of the position of the magnet 6. Since the 3D Hall sensor 8 directly outputs the P gear signal through PWM, the P signal can be directly sent to the TCU in the form of PWM by the sensor within the duty cycle range of 4%~96% like other gear signals, without occupying the fault diagnosis output pulse width of the sensor itself in the area of ​​<4% and >96%, and there will be no problem of false triggering of the P signal due to the output fault PWM signal. Moreover, the P signal does not directly pull down or pull up the PWM signal, and long-term triggering will not damage the sensor, and the overall reliability is better. The design of the present invention uses a purely mechanical form, with low cost and high reliability, and the form in which the P button 4 is integrated in the handball assembly 3 is easily accepted by the public.

[0032] like Figure 8 As shown, the existing non-domain integrated electronic shifter processes the gear signal and the P gear signal mainly through the magnet 6 and the 3D Hall sensor 8. The 3D Hall sensor 8 collects the magnetic flux in the X, Y, and Z directions, and then processes it through the DSP, and then sends the result to the MCU on the main board in the form of SPI. The MCU parses the current position according to the software strategy, and compiles the gear signal into a frame and transmits it directly to the BUS through the CAN transceiver to interact with the TCU.

[0033] Since the existing domain-integrated electronic shifter P signals are arranged in the form of switches, they cannot be directly transmitted to the TCU through the PWM of the 3D Hall sensor 8. The existing solution is to achieve 0% and 100% duty cycle output by pulling down or up the PWM, and the area of ​​PWM <4% and >96% is the pulse width interval used by the sensor to output its own fault diagnosis. Pulling it down or up occupies the pulse width of the fault diagnosis output, and the two form a conflict. When the sensor sends a diagnostic fault signal, the system may misjudge it as an input P signal. If the P button 4 is in the triggered state for a long time, the internal circuits of PWM1 and PWM2 are very easy to be damaged, which will eventually cause the sensor to fail to work.

[0034] like Fig. 9 As shown, the processing of the gear position signal and the P gear signal by the domain integrated electronic shifter in the design of the present invention is mainly through the induction of the magnet 6 and the 3D Hall sensor 8, and then the 3D Hall sensor 8 is calibrated and then exchanged in real time with 2-way PWM and TCU.

[0035] The main difference between the domain-integrated electronic shifter in the design of the present invention and the existing non-domain-integrated electronic shifter is that the domain-integrated electronic shifter omits the MCU and CAN transceiver, and the signal is output in the form of PWM, while the non-domain-integrated electronic shifter requires complex hardware and software algorithm support, and the signal is output in the form of CAN; for the gear analysis strategy, the domain-integrated electronic shifter is completed by the TCU, while the non-domain-integrated electronic shifter is completed by itself.

[0036] In the design of the present invention, the gear signal acquisition of the integrated electronic shifter is realized by induction of the magnet 6 and the 3D Hall sensor 8. The PWM output of the fixed gear in the range of 10%-90% is realized by calibrating the duty cycle value of the sensor as defined in Table 1. The output process fully considers the PWM up and down fluctuation problem (setting a tolerance of ±5%), the acquisition error of the TCU end, the surrounding interference and other problems. When realizing multi-level adjustment within the range, the isolation area between the gears is widened as much as possible to achieve stable output.

[0037]

[0038] Table 1

[0039] The specific setting gears are Home, F2, F1, B1, B2, M, M+, M- and P. In addition, the fault diagnosis pulse width is the existing <4% and >96% range. The specific gears correspond to the two PWM output values ​​as follows:

[0040] In Home gear, the α output value (PWM1) is 50%±5, and the β output value (PWM2) is 50%±5;

[0041] In F2 gear, the α output value (PWM1) is 86%±5, and the β output value (PWM2) is 50%±5;

[0042] In F1 gear, the α output value (PWM1) is 68%±5, and the β output value (PWM2) is 50%±5;

[0043] In the B1 gear, the α output value (PWM1) is 32%±5, and the β output value (PWM2) is 50%±5;

[0044] In the B2 gear, the α output value (PWM1) is 14%±5, and the β output value (PWM2) is 50%±5;

[0045] In M gear, the α output value (PWM1) is 50%±5, and the β output value (PWM2) is 86%±5;

[0046] In M+ gear, the α output value (PWM1) is 50%±5, and the β output value (PWM2) is 68%±5;

[0047] In M-gear, the α output value (PWM1) is 50%±5, and the β output value (PWM2) is 32%±5;

[0048] In P gear, the α output value (PWM1) is 50%±5, and the β output value (PWM2) is 14%±5.

[0049] The P gear is used as the signal output of the P gear signal, and the other gears can be calibrated according to needs.

[0050] like Fig.10 As shown, the shifting form designed by the present invention can move the P button 4 originally integrated on the panel and triggered by the silicone button and the gold finger to the handball assembly 3, and convert it into a change in the magnetic flux of the magnet 6 through a series of mechanical movements of the P button 4, thereby realizing the change of the gear state. This change is generated by the internal calibration of the 3D Hall sensor 8 and does not require external forced intervention. It solves the gear signal area with a pulse width between 4% and 96% without occupying the fault diagnosis pulse width of the sensor itself, thereby improving reliability.

[0051] It should be understood that the above description is only a preferred embodiment of the present invention and is not sufficient to limit the technical solution of the present invention. For ordinary technicians in this field, within the spirit and principles of the present invention, additions, substitutions, changes or improvements can be made according to the above description, and all these additions, substitutions, changes or improved technical solutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A domain-integrated push rod type electronic shifter with a P button placed on a hand ball, comprising a shifter housing (1), characterized in that: The shifter housing (1) is provided with a joystick (2), the upper part of the joystick (2) is provided with a handball assembly (3) connected thereto, the handball assembly (3) is provided with a P button (4), the lower part of the joystick (2) is provided with a magnet bracket (5), the P button (4) is connected to the magnet bracket (5), a magnet (6) is provided on the side of the magnet bracket (5), a shift circuit board (7) is provided in the shifter housing (1), a 3D Hall sensor (8) is provided at a position corresponding to the magnet (6) on the shift circuit board (7), the P button (4) is pressed to drive the magnet bracket (5) to move, and the PWM output of the P gear is realized by the position change between the magnet (6) and the 3D Hall sensor (8), and the output of other fixed gears is also realized by the magnet (6) and the 3D Hall sensor (8). 8) to realize PWM output, the joystick (2) is provided with a core rod (9), the upper part of the core rod (9) is connected to the P button (4), the lower part of the core rod (9) is in contact with the magnet bracket (5), the magnet bracket (5) is movably connected to the joystick (2), the middle part of the magnet bracket (5) is provided with a contact inclined surface (11), the lower end of the core rod (9) is in contact with the contact inclined surface (11) and pushes the magnet bracket (5) to move leftward, driving the magnet (6) to move closer to the 3D Hall sensor (8), a signal collection module (14) connected thereto is provided below the shift circuit board (7), the 3D Hall sensor (8) is vertically arranged on the right end surface of the signal collection module (14), and the magnet (6) at the corresponding position is vertically arranged on the left part of the magnet bracket (5).

2. The domain-integrated push rod type electronic shifter with the P button placed on the handball according to claim 1, characterized in that: The magnet bracket (5) is movably connected to the joystick (2) via a connecting column (12), and a spring (10) is provided between the connecting column (12) and the joystick (2).

3. The domain-integrated push rod type electronic shifter with the P button placed on the handball according to claim 2, characterized in that: The lower part of the joystick (2) is penetrated transversely to form a magnet bracket installation position, and the two sides of the magnet bracket installation position are penetrated to form a connection hole, the magnet bracket (5) is movably installed in the magnet bracket installation position, the connection column (12) is movably installed in the connection hole, and the spring (10) is sleeved outside the connection column (12).

4. The domain-integrated push rod type electronic shifter with the P button placed on the handball according to claim 2, characterized in that: The left portion of the magnet bracket (5) extends upward to form a limit block (13), and the limit block (13) contacts and limits the joystick (2).

5. The domain-integrated push rod type electronic shifter with a P button placed on a handball according to claim 1, characterized in that: The lower end of the core rod (9) is in the form of a hemispherical surface, and the lower end of the core rod (9) and the contact inclined surface (11) are both smooth surfaces.

6. The domain-integrated push rod type electronic shifter with a P button placed on a handball according to claim 1, characterized in that: A spring (10) is provided between the core rod (9) and the operating rod (2).

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