CN111350820A - Locking mechanism with double-rotation-angle detection function - Google Patents

Locking mechanism with double-rotation-angle detection function Download PDF

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Publication number
CN111350820A
CN111350820A CN202010305741.6A CN202010305741A CN111350820A CN 111350820 A CN111350820 A CN 111350820A CN 202010305741 A CN202010305741 A CN 202010305741A CN 111350820 A CN111350820 A CN 111350820A
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CN
China
Prior art keywords
assembly
angle detection
power
transmission assembly
speed reduction
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Pending
Application number
CN202010305741.6A
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Chinese (zh)
Inventor
姚冲
刘平
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Guangdong Grandmark Automotive Systems Co ltd
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Guangdong Grandmark Automotive Systems Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Grandmark Automotive Systems Co ltd filed Critical Guangdong Grandmark Automotive Systems Co ltd
Priority to CN202010305741.6A priority Critical patent/CN111350820A/en
Publication of CN111350820A publication Critical patent/CN111350820A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A locking mechanism with dual rotational angle detection, comprising: the device comprises a shell, a power assembly, a power transmission assembly, a primary speed reduction transmission assembly, a secondary speed reduction transmission assembly, a control assembly, a first rotating angle detection assembly and a second rotating angle detection assembly. The locking mechanism with double rotation angle detection is provided with two sensors for detecting the rotation angle in the locking mechanism, so that the confirmation of locking and unlocking actions can be ensured by utilizing data output by one sensor under the condition that one sensor fails or the output is abnormal, meanwhile, the two data are compared to correct the confirmation result error of the locking mechanism in time, and the reliability and the robustness of a system are improved.

Description

Locking mechanism with double-rotation-angle detection function
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a locking mechanism with double-rotation-angle detection function.
Background
The popularization of new energy automobiles drives the application of a large number of novel accessories, the novel fuel automobile is different from a traditional fuel automobile multi-stage gearbox and a clutch, and the pure electric drive mode has natural advantages in transmission efficiency and structure, but simultaneously brings safety challenges.
The P-gear parking brake at the output shaft end of the speed reducer is a safety device which can not be separated from the speed reducer after a motor is parked and can meet the requirements of parking and parking functions. In the P-gear locking executing mechanism, the step of determining locking and unlocking in place is to measure the rotation angle of an output shaft by using a sensor, and when the sensor detects that the rotation angle reaches a set threshold range, one locking or unlocking action can be determined to be completed.
In the conventional P-gear locking actuating mechanism, the rotation angle of an output shaft is generally measured by using a single sensor, and when the sensor fails, the locking and unlocking actions cannot be confirmed, so that potential safety hazards exist.
It can be seen that the prior art has at least the following disadvantages: when the single sensor is used for measuring the rotating angle of the output shaft, the locking and unlocking actions cannot be ensured to be confirmed under the condition that the sensor fails, and potential safety hazards exist.
Therefore, it is necessary to provide a technical means to solve the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a locking mechanism with double rotation angle detection, so as to solve the problem that when a single sensor is used for measuring the rotation angle of an output shaft in the prior art, the locking and unlocking actions cannot be guaranteed to be confirmed under the condition that the sensor fails, and potential safety hazards exist.
The present invention is achieved as described above, and a lock mechanism with double rotation angle detection includes:
a housing for mounting components; an accommodating space is arranged inside the shell;
the power assembly is used for providing power; the power assembly is arranged in the accommodating space;
the power transmission assembly is used for transmitting the power of the power assembly; the power transmission assembly is arranged in the accommodating space and is connected with the power assembly;
the primary speed reduction transmission assembly is used for transmitting the power of the power transmission assembly; the primary speed reduction transmission assembly is arranged in the accommodating space and is connected with the power transmission assembly;
the secondary speed reduction transmission component is used for transmitting the power of the primary speed reduction transmission component; the secondary speed reduction transmission assembly is arranged in the accommodating space and is connected with the primary speed reduction transmission assembly;
the control assembly is used for controlling the work of each part; the control assembly is arranged in the accommodating space and is connected with the power assembly;
the first rotating angle detection assembly is used for detecting a first rotating angle of the primary speed reduction transmission assembly; the first rotation angle detection assembly is arranged on the control assembly and is close to the first-stage deceleration transmission assembly;
the second rotation angle detection assembly is used for detecting a second rotation angle of the two-stage deceleration transmission assembly; the second rotation angle detection assembly is arranged on the control assembly and is close to the second-stage deceleration transmission assembly.
Preferably, the housing comprises: the upper shell is fixed on the lower shell, and the upper shell and the lower shell jointly form the accommodating space between the upper shell and the lower shell.
Preferably, the power assembly comprises: the motor is arranged in a motor accommodating cavity in the inner wall of the lower shell in the shell.
Preferably, the power transmission assembly includes: and the worm is arranged in the accommodating space and is connected with a motor shaft in the power assembly.
Preferably, the primary speed-reducing transmission assembly comprises: the first end of the first-level rotating shaft is arranged on the upper shell in the shell, the gear wheel and the pinion are sleeved on the first-level rotating shaft, and the gear wheel is meshed with a worm in the power transmission assembly.
Preferably, the two-stage deceleration transmission assembly comprises: the first end of the second-stage rotating shaft is arranged on an upper shell in the shell, the fan-shaped worm wheel and the transmission gear are sleeved on the second-stage rotating shaft, the fan-shaped worm wheel is meshed with a pinion in the first-stage speed reduction transmission assembly, and the transmission gear is meshed with the rack.
Preferably, the second end of the secondary rotating shaft is provided with an output shaft, and the output shaft extends out of a lower shell in the shell.
Preferably, the control assembly comprises: the circuit board is fixed on the inner wall of the lower shell in the shell, a motor in the power assembly is connected with the circuit board, and the first rotation angle detection assembly and the second rotation angle detection assembly are arranged on the circuit board.
Preferably, the first rotation angle detecting assembly includes: the first magnet is arranged at the second end of the primary rotating shaft in the primary speed reduction transmission assembly, and the first Hall sensor is arranged on the circuit board in the control assembly and is opposite to the first magnet.
Preferably, the second rotation angle detecting assembly includes: the second magnet is arranged on a rack in the secondary speed reduction transmission assembly, and the second Hall sensor is arranged on a circuit board in the control assembly and is opposite to the second magnet.
The locking mechanism with double rotation angle detection is provided with two sensors for detecting the rotation angle in the locking mechanism, so that the confirmation of locking and unlocking actions can be ensured by utilizing data output by one sensor under the condition that one sensor fails or the output is abnormal, meanwhile, the two data are compared to correct the confirmation result error of the locking mechanism in time, and the reliability and the robustness of a system are improved.
Drawings
FIG. 1 is a general schematic view of a locking mechanism with dual rotational angle detection according to an embodiment of the present invention;
FIG. 2 is an exploded view of a locking mechanism with dual rotational angle detection according to an embodiment of the present invention;
FIG. 3 is an exploded view of a locking mechanism with dual rotational angle detection according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an internal structure of a locking mechanism with dual rotation angle detection according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an internal structure of a locking mechanism with dual rotation angle detection according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
Referring to fig. 1-5, in an embodiment of the present application, a locking mechanism with dual rotation angle detection is provided, including: the housing 10, the power assembly 20, the power transmission assembly 30, the primary deceleration transmission assembly 40, the secondary deceleration transmission assembly 50, the control assembly 60, the first rotation angle detection assembly 70, and the second rotation angle detection assembly 80, which will be described in detail below.
Referring to fig. 1-5, in an embodiment of the present application, a locking mechanism with dual rotation angle detection includes:
a housing 10 for mounting various parts; an accommodating space is arranged inside the shell 10;
a power assembly 20 for providing power; the power assembly 20 is arranged in the accommodating space;
a power transmission assembly 30 for transmitting power of the power assembly 20; the power transmission assembly 30 is disposed in the accommodating space and connected with the power assembly 20;
a primary deceleration transmission assembly 40 for transmitting the power of the power transmission assembly 30; the primary speed reduction transmission assembly 40 is arranged in the accommodating space and is connected with the power transmission assembly 30;
the secondary speed reduction transmission assembly 50 is used for transmitting the power of the primary speed reduction transmission assembly 40; the second-stage deceleration transmission assembly 50 is arranged in the accommodating space and is connected with the first-stage deceleration transmission assembly 40;
a control assembly 60 for controlling the operation of the various parts; the control assembly 60 is arranged in the accommodating space and is connected with the power assembly 20;
a first rotation angle detection assembly 70 for detecting a first rotation angle of the primary deceleration transmission assembly 40; the first rotation angle detecting assembly 70 is disposed on the control assembly 60 and close to the first-stage deceleration transmission assembly 40;
a second rotation angle detection assembly 80 for detecting a second rotation angle of the two-stage deceleration transmission assembly 50; the second rotation angle detecting element 80 is disposed on the control element 60 and close to the second deceleration transmission element 50.
When the locking mechanism is used, the control component 60 sends a control signal to the power component 20, the power component 20 receives the control signal and outputs power to the power transmission component 30, the power transmission component 30 transmits the power to the first-stage speed reduction transmission component 40, the first-stage speed reduction transmission component 40 transmits the power to the second-stage speed reduction transmission component 50, and the second-stage speed reduction transmission component 50 outputs the power to the outside; meanwhile, the first rotation angle detection assembly 70 may detect a first rotation angle of the first-stage deceleration transmission assembly 40 and transmit the first rotation angle to the control assembly 60, the second rotation angle detection assembly 80 may detect a second rotation angle of the second-stage deceleration transmission assembly 50 and transmit the second rotation angle to the control assembly 60, the control assembly 60 receives the first rotation angle and the second rotation angle, respectively, and when any one of the first rotation angle detection assembly 70 and the second rotation angle detection assembly 80 is failed, the control assembly 60 may perform locking or unlocking confirmation according to the rotation angle detected by the other assembly.
Referring to fig. 1-5, in the embodiment of the present application, the housing 10 includes: the upper shell 11 is fixed on the lower shell 12, and the upper shell 11 and the lower shell form the accommodating space together with the lower shell 12. The upper case 11 and the lower case 12 may be detachably mounted together by screws.
Referring to fig. 1-5, in the embodiment of the present application, the power assembly 20 includes: a motor 21, the motor 21 being disposed in the motor accommodating chamber 13 on the inner wall of the lower housing 12 in the housing 10. The motor 21 receives a control signal of the control unit 60 and outputs power to the power transmission unit 30.
Referring to fig. 1-5, in the embodiment of the present application, the power transmission assembly 30 includes: and the worm 31 is arranged in the accommodating space and is connected with the motor 21 shaft in the power assembly 20, and when the motor 21 rotates, the worm 31 is driven to rotate together.
Referring to fig. 1-5, in the embodiment of the present application, the first-stage deceleration transmission assembly 40 includes: one-level rotation axis 41, gear wheel 42 and pinion 43, one-level rotation axis 41 first end set up in on the last casing 11 in the casing 10, gear wheel 42 with pinion 43 overlaps and locates on one-level rotation axis 41, gear wheel 42 with worm 31 meshing in the power transmission component 30.
In the embodiment of the present application, when the worm 31 rotates, the large gear 42 is driven to rotate, the large gear 42 drives the primary rotating shaft 41 and the small gear 43 to rotate together, and since the diameter of the small gear 43 is smaller than that of the large gear 42, the power transmitted by the worm 31 is decelerated and then transmitted to the secondary deceleration transmission assembly 50.
Referring to fig. 1-5, in the embodiment of the present application, the two-stage deceleration transmission assembly 50 includes: the first end of the secondary rotating shaft 51 is arranged on the upper shell 11 in the shell 10, the sector worm gear 52 and the transmission gear 53 are sleeved on the secondary rotating shaft 51, the sector worm gear 52 is meshed with the pinion 43 in the primary speed reduction transmission assembly 40, and the transmission gear 53 is meshed with the rack 54.
In the embodiment of the present application, when the pinion 43 rotates, the sector worm gear 52 is driven to rotate, the sector worm gear 52 drives the secondary rotating shaft 51 and the transmission gear 53 to rotate together, and since the diameter of the sector worm gear 52 is larger than that of the transmission gear 53, the power transmitted by the pinion 43 is decelerated and then transmitted to the outside; and drives the rack gear 54 to rotate when the pinion gear 53 rotates.
Referring to fig. 1 to 5, in the embodiment of the present application, the second end of the secondary rotating shaft 51 is provided with an output shaft 55, and the output shaft 55 extends out of the lower shell 12 in the shell 10. When the secondary rotating shaft 51 rotates, the output shaft 55 is driven to rotate, and an external device can be connected with the output shaft 55 through a transmission rod for power transmission.
Referring to fig. 1-5, in the embodiment of the present application, the control assembly 60 includes: a circuit board 61, the circuit board 61 being fixed on the inner wall of the lower housing 12 in the housing 10, the motor 21 in the power assembly 20 being connected to the circuit board 61, the first rotation angle detecting assembly 70 and the second rotation angle detecting assembly 80 being disposed on the circuit board 61.
Referring to fig. 1 to 5, in the embodiment of the present application, the first rotation angle detecting element 70 includes: the first hall sensor 71 and the first magnet 72, the first magnet 72 is disposed on the second end of the primary rotating shaft 41 in the primary deceleration transmission assembly 40, and the first hall sensor 71 is disposed on the circuit board 61 in the control assembly 60 and is opposite to the first magnet 72.
Referring to fig. 1 to 5, in the embodiment of the present application, the second rotation angle detecting element 80 includes: the second hall sensor 81 and the second magnet 82, the second magnet 82 is disposed on the rack 54 in the two-stage deceleration transmission assembly 50, and the second hall sensor 81 is disposed on the circuit board 61 in the control assembly 60 and is opposite to the second magnet 82.
In the embodiment of the present application, when the primary rotating shaft 41 rotates, the first magnet 72 is driven to rotate, the first magnet 72 forms a magnetic field in a surrounding space thereof, when the first magnet rotates, the magnetic field changes periodically, the first hall sensor 71 can sense the change of the magnetic field, and the circuit board 61 can calculate the first rotating angle of the primary rotating shaft 41, so as to determine the rotating angle of the output shaft 55; when the rack 54 moves, the second magnet 82 is driven to move, the second magnet 82 forms a magnetic field in the surrounding space of the second magnet 82, when the second magnet moves, the magnetic field changes periodically, the second hall sensor 81 can sense the change of the magnetic field, and the circuit board 61 can calculate the second rotation angle of the secondary rotation shaft 51, so as to determine the rotation angle of the output shaft 55. When any one of the first hall sensor 71 and the second hall sensor 81 is out of order, the circuit board 61 can calculate the rotation angle of the output shaft 55 according to the other sensor in the normal state; when the first hall sensor 71 and the second hall sensor 81 both work normally, the circuit board 61 can acquire the rotation angles of the two output shafts 55, and compare the two angles, thereby improving the accuracy of the locking and unlocking operation by the locking mechanism.
The locking mechanism with double rotation angle detection is provided with two sensors for detecting the rotation angle in the locking mechanism, so that the confirmation of locking and unlocking actions can be ensured by utilizing data output by one sensor under the condition that one sensor fails or the output is abnormal, meanwhile, the two data are compared to correct the confirmation result error of the locking mechanism in time, and the reliability and the robustness of a system are improved.
The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A locking mechanism with dual rotational angle detection, comprising:
a housing for mounting components; an accommodating space is arranged inside the shell;
the power assembly is used for providing power; the power assembly is arranged in the accommodating space;
the power transmission assembly is used for transmitting the power of the power assembly; the power transmission assembly is arranged in the accommodating space and is connected with the power assembly;
the primary speed reduction transmission assembly is used for transmitting the power of the power transmission assembly; the primary speed reduction transmission assembly is arranged in the accommodating space and is connected with the power transmission assembly;
the secondary speed reduction transmission component is used for transmitting the power of the primary speed reduction transmission component; the secondary speed reduction transmission assembly is arranged in the accommodating space and is connected with the primary speed reduction transmission assembly;
the control assembly is used for controlling the work of each part; the control assembly is arranged in the accommodating space and is connected with the power assembly;
the first rotating angle detection assembly is used for detecting a first rotating angle of the primary speed reduction transmission assembly; the first rotation angle detection assembly is arranged on the control assembly and is close to the first-stage deceleration transmission assembly;
the second rotation angle detection assembly is used for detecting a second rotation angle of the two-stage deceleration transmission assembly; the second rotation angle detection assembly is arranged on the control assembly and is close to the second-stage deceleration transmission assembly.
2. The latch mechanism with dual rotational angle detection of claim 1, wherein the housing comprises: the upper shell is fixed on the lower shell, and the upper shell and the lower shell jointly form the accommodating space between the upper shell and the lower shell.
3. The latch mechanism with dual rotational angle detection of claim 1, wherein the power assembly comprises: the motor is arranged in a motor accommodating cavity in the inner wall of the lower shell in the shell.
4. The latch mechanism with dual rotational angle detection of claim 1, wherein the power transmission assembly comprises: and the worm is arranged in the accommodating space and is connected with a motor shaft in the power assembly.
5. The locking mechanism with dual rotational angle detection of claim 1, wherein the primary deceleration transmission assembly comprises: the first end of the first-level rotating shaft is arranged on the upper shell in the shell, the gear wheel and the pinion are sleeved on the first-level rotating shaft, and the gear wheel is meshed with a worm in the power transmission assembly.
6. The locking mechanism with dual rotational angle detection of claim 1, wherein the secondary deceleration transmission assembly comprises: the first end of the second-stage rotating shaft is arranged on an upper shell in the shell, the fan-shaped worm wheel and the transmission gear are sleeved on the second-stage rotating shaft, the fan-shaped worm wheel is meshed with a pinion in the first-stage speed reduction transmission assembly, and the transmission gear is meshed with the rack.
7. The locking mechanism with dual rotation angle detection of claim 6, wherein the second end of the secondary rotating shaft is provided with an output shaft, and the output shaft extends out of a lower one of the housings.
8. The latch mechanism with dual rotational angle detection of claim 1, wherein the control assembly comprises: the circuit board is fixed on the inner wall of the lower shell in the shell, a motor in the power assembly is connected with the circuit board, and the first rotation angle detection assembly and the second rotation angle detection assembly are arranged on the circuit board.
9. The locking mechanism with dual rotational angle detection of claim 1, wherein the first rotational angle detecting assembly comprises: the first magnet is arranged at the second end of the primary rotating shaft in the primary speed reduction transmission assembly, and the first Hall sensor is arranged on the circuit board in the control assembly and is opposite to the first magnet.
10. The locking mechanism with dual rotational angle detection of claim 1, wherein the second rotational angle detection assembly comprises: the second magnet is arranged on a rack in the secondary speed reduction transmission assembly, and the second Hall sensor is arranged on a circuit board in the control assembly and is opposite to the second magnet.
CN202010305741.6A 2020-04-17 2020-04-17 Locking mechanism with double-rotation-angle detection function Pending CN111350820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010305741.6A CN111350820A (en) 2020-04-17 2020-04-17 Locking mechanism with double-rotation-angle detection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010305741.6A CN111350820A (en) 2020-04-17 2020-04-17 Locking mechanism with double-rotation-angle detection function

Publications (1)

Publication Number Publication Date
CN111350820A true CN111350820A (en) 2020-06-30

Family

ID=71191319

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010305741.6A Pending CN111350820A (en) 2020-04-17 2020-04-17 Locking mechanism with double-rotation-angle detection function

Country Status (1)

Country Link
CN (1) CN111350820A (en)

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