CN108798308B - Driving mechanism of automobile door lock - Google Patents
Driving mechanism of automobile door lock Download PDFInfo
- Publication number
- CN108798308B CN108798308B CN201810549016.6A CN201810549016A CN108798308B CN 108798308 B CN108798308 B CN 108798308B CN 201810549016 A CN201810549016 A CN 201810549016A CN 108798308 B CN108798308 B CN 108798308B
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- Prior art keywords
- shaft
- rack
- motor
- lower shell
- gear
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 230000000670 limiting effect Effects 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/34—Details of the actuator transmission of geared transmissions
Landscapes
- Lock And Its Accessories (AREA)
Abstract
The invention relates to a driving mechanism of an automobile door lock, and belongs to the technical field of automobile door lock structures. The vehicle side door lock has a locking and unlocking mechanism and a drive unit that drives the locking and unlocking mechanism, wherein the drive unit has at least a motor, a gear and a rack driven by the motor. The motor main body part and the far-end motor shaft are mainly limited by the lower shell, and are clamped and fixed by the upper shell matched with the lower shell, so that the output shaft of the motor is fixed; the rack is limited by a shaft fixed relative to the lower housing to move in the direction of disengagement, thereby ensuring the center distance between the gear and the rack mounted on the motor.
Description
Technical Field
The invention relates to a driving mechanism of an automobile door lock, and belongs to the technical field of automobile door lock structures.
Background
Currently, most of locking and unlocking mechanisms of existing automobile door locks are driven by a multi-stage gear or at least one section of worm gear; for the purpose of electric locking and unlocking, a motor driving device is usually arranged between an upper shell and a lower shell;
the number of the multistage gear transmission parts is more, so that the transmission stability is poor. If the gear and the rack are meshed for transmission, the number of parts can be reduced, so that the stability of the transmission of the mechanism is improved.
However, during the transmission of the gear and the rack engaged therewith, radial forces may be easily generated due to friction generated by the transmission or due to a lack of sufficient rigidity between the transmissions, resulting in deformation. This can result in the gear no longer fully engaging the rack. When this radial force is applied for a long period of time, damage to the tooth surface may result or tooth breakage may result. Eventually, the function of the door lock is lost, and the safety of passengers is endangered.
In view of the above problems, we find a scheme for ensuring the center distance of the gear transmission as much as possible in the practical design process. Firstly, the motor and rack mounting structure can reduce the requirement on the precision of parts, and secondly, the structure can provide enough rigidity to limit the radial force generated by the gear and the rack, thereby reducing the deformation generated in the gear-rack transmission process. Therefore, the present invention is to solve the above problems, and to improve the relative rigidity of the rack by the stable motor and rack fixing structure, thereby ensuring the center distance of the gear transmission and reducing the manufacturing cost.
Disclosure of Invention
The invention aims to solve the problem of poor transmission stability caused by multistage transmission and a large number of parts of the existing driving mechanism of the automobile door lock, and further provides the driving mechanism of the automobile door lock, which has the advantages of reasonable and simple structural design, stable and reliable transmission performance, no function defect and low manufacturing cost.
For this purpose, the invention adopts the following technical scheme:
the driving mechanism of the automobile door lock is characterized by comprising an upper shell 4, a lower shell 5, a motor 1 clamped and fixed between the upper shell and the lower shell, a gear 2 and a rack 3;
wherein,
the motor 1 is arranged in a motor groove reserved in the lower shell 5, the gear 2 is arranged on a motor shaft 1a of the motor 1, and the outer end part of the motor shaft 1a is supported by a supporting and limiting structure of the lower shell 5 and limits the movement of the motor shaft in the disengagement direction;
the rack 3 is meshed and driven above the gear 2, and the effective meshing distance between the rack and the gear 2 is ensured by a limit groove reserved in the lower shell 5 and the shaft 6.
The whole rack 3 is of a block structure and is arranged in a limit groove reserved in the lower shell 5, the limit groove reserved in the lower shell 5 is a U-shaped groove, and the U-shaped groove provides guiding of the meshing direction for the rack 3 and simultaneously limits the disengagement position of the rack 3;
the shaft 6 may be a separate shaft, may be part of the lower housing 5, or may be part of the rack 3;
the shaft 6 adopts an independent shaft, the lower part of the rack 3 is a meshing tooth part 3b which is matched with the gear 2 for transmission, a long-strip slot hole 3a is formed in the middle part of the rack, and the shaft 6 is simultaneously connected in the long-strip slot hole 3a and a shaft hole 5a reserved in the lower shell 5 in a penetrating way; the shaft 6 is limited by a long slotted hole 3a of the rack 3 or a shaft hole 5a of the lower shell 5;
one end of the shaft 6 is rigidly connected to the lower shell 5, and the other end of the shaft penetrates through a long-strip groove hole 3a formed in the rack 3;
one end of the shaft 6 is rigidly connected to the rack 3, and the other end of the shaft is inserted into a long shaft hole reserved in the lower shell 5;
the shaft 6, the long slot 3a and the motor shaft 1a are parallel to each other;
the supporting and limiting structure on the lower shell 5 for the outer end part of the motor shaft 1a comprises a transverse supporting structure for bearing the shaft end and a vertical plugging structure for limiting the shaft end to move along the axial direction;
in order to further ensure the limiting effect so as to ensure the transmission stability between the rack and the gear, the rack 3 is of a block-shaped structure which is integrally U-shaped, the upper shell 4 is provided with an inverted U-shaped slot, and after the upper shell and the lower shell are assembled, the inverted U-shaped slot of the upper shell 4 stably positions the rack 3 in the shell.
According to the invention, through the connection of the shaft 6, the motor 1 and the rack 3 are fixed on the lower shell 5 at the same time, so that the state that the tooth part 3b of the rack 3 is clamped by the shaft 6 and the gear 2 is formed, namely, the lower shell 5 simultaneously limits the degree of freedom of the motor 1 and the rack 3 in the disengaging and engaging direction, thereby ensuring the center distance between the gear 2 and the rack 3.
Through the mode, firstly, the gear rack is adopted for transmission, so that parts are reduced, and the cost is reduced. Secondly, the motor shaft is completely fixed in a clamping mode of the upper shell and the lower shell; if there is no limit of the shaft 6, the rack is clamped in a closed slot by the upper and lower housings, the degree of freedom of the rack to be disengaged is limited by the upper housing, but the degree of freedom of the motor to be disengaged is limited by the lower housing, which requires sufficient assembly accuracy of the upper and lower housings, and requires high dimensional accuracy for the components, and the housings require sufficient strength to be limited to reduce the influence of radial force. But through the spacing of the axle 6 of relative fixation on the lower casing, guaranteed that the rack and pinion is spacing by the same part of lower casing simultaneously, guaranteed assembly accuracy, reduced the precision requirement to assembly size to the spare part to the cost is reduced has also guaranteed the reliability of rack and pinion transmission function.
The invention has reasonable and simple structural design, stable and reliable operation performance and no function defect. Meanwhile, the manufacturing cost can be reduced, and the manufacturing is convenient.
Drawings
Fig. 1: the invention locks the axial explosion view of the unlocking mechanism driving unit;
fig. 2: a sectional view of the drive unit in the motor axis direction;
fig. 3: a cross-sectional view of the meshing motion direction of the gear and the rack;
in the figure, 1, motor, 1a, motor shaft, 2, gear, 3, rack, 3a, long slot, 3b, meshing tooth portion, 4, upper case, 5, lower case, 5a lower case mounting hole, 6, shaft.
Detailed Description
The following describes in detail a driving mechanism for an automobile door lock according to the present invention with reference to fig. 1 to 3. The following specific embodiments are one of the technical solutions of the present invention, namely, the priority solution, and are not limiting to the embodiments of the present invention. All obvious changes or modifications which come within the spirit of the invention are desired to be protected.
Example 1
A driving mechanism of an automobile door lock is arranged in an automobile door lock body, and acts on a locking and unlocking mechanism to realize an electric locking and unlocking function of the door lock. The locking lever and the inner and outer locking and unlocking operation mechanisms in the locking and unlocking mechanism are not explicitly marked in the drawings. The important summary is the relevant structure of the drive unit.
Firstly, a gear 2 is arranged on an output shaft of a motor 1, and the gear 2 and the motor are in interference fit, so that the gear 2 is not disengaged from the motor shaft 1a during rotation;
secondly, the motor 1 and the gear 2 form a motor gear assembly which is arranged in the lower shell 5, wherein the motor 1 is provided with two round short shafts at the front and the rear and is limited in two short U-shaped holes of the lower shell 5, the front and the rear of the motor 1 are simultaneously limited by corresponding limiting surfaces of the lower shell 5, the bottom surface of the motor 1 is correspondingly limited by the lower shell 5, so that the motor 1 can only move outwards of the lower shell 5, namely, the rack is separated from the meshing direction after assembly, and the motor 1 is fixed by the upper shell and the lower shell, and meanwhile, the movement of the far-end motor shaft 1a in the separation meshing direction is limited by a small U-shaped groove of the lower shell 5; the corresponding gear wheel 2 is mounted in an elongated U-shaped hole in the lower housing 5.
The rack 3 is mounted above the gear 2 on the motor output shaft and limited by the U-shaped slot of the lower housing 5, and when the shaft 6 and the upper housing 4 are not mounted, the rack 3 can only move outwards of the lower housing 5, i.e. the rack is separated from the engagement direction after assembly, and can slide along the U-shaped slot under the driving of the gear 2.
Then, a separate shaft 6 is passed through the mounting hole 5a of the lower housing 5 in a direction preferentially parallel to the direction of the motor shaft 1a or any other straight line in a plane formed parallel to the direction of the rack movement and is tightly fitted to the lower housing 5 to form a rigid body, and at the same time, the shaft 6 is passed through the long hole 3a of the rack 3 in a manner of keeping a gap and restricts the movement of the rack 3 in the disengagement direction.
Through the connection of the shaft 6, the motor 1 and the rack 3 are fixed on the lower housing 5 at the same time, and the toothed part 3b of the running rack 3 is clamped by the shaft 6 and the gear 2, namely, the lower housing 5 simultaneously limits the degree of freedom of the motor 1 and the rack 3 in the disengaging and engaging direction, thereby ensuring the center distance between the gear 2 and the rack 3.
Finally, after the upper case 4 is mounted on the lower case 5, the state of the upper and lower clamp motors 1 is established and completely fixed. Meanwhile, the upper shell and the lower shell form a long hole after being combined at the moving part of the rack 3, wherein the rack 3 can be driven by a gear and linearly slide back and forth in the gear, so that a locking lever is pushed, and the electric locking and unlocking functions are realized.
Because the space closure required by the meshing transmission is good, the gear 2 and the rack 3 can be formed by plastic injection molding. But does not preclude the use of metal powder metallurgy processes.
Through the mode, firstly, the gear rack is adopted for transmission, so that parts are reduced, and the cost is reduced. Secondly, the motor shaft is completely fixed in a clamping mode of the upper shell and the lower shell; if there is no limit of the shaft 6, the rack is clamped in a closed slot by the upper and lower housings, the degree of freedom of the rack to be disengaged is limited by the upper housing, but the degree of freedom of the motor to be disengaged is limited by the lower housing, which requires sufficient assembly accuracy of the upper and lower housings, and requires high dimensional accuracy for the components, and the housings require sufficient strength to be limited to reduce the influence of radial force. But through the spacing of the axle 6 of relative fixation on the lower casing, guaranteed that the rack and pinion is spacing by the same part of lower casing simultaneously, guaranteed assembly accuracy, reduced the precision requirement to assembly size to the spare part to the cost is reduced has also guaranteed the reliability of rack and pinion transmission function.
Example 2
The present embodiment is different from embodiment 1 in that
The shaft 6 is a part of the lower housing 5, one end of the shaft is rigidly connected to the lower housing 5, and the other end of the shaft penetrates through the long slot 3a formed in the rack 3.
Example 3
The present embodiment is different from embodiment 1 in that
The shaft 6 is a part of the rack 3, one end of the shaft is rigidly connected to the rack 3, and the other end of the shaft is inserted into a long shaft hole reserved in the lower shell 5.
Claims (2)
1. The driving mechanism of the automobile door lock is characterized by comprising an upper shell (4), a lower shell (5), a motor (1) clamped and fixed between the upper shell and the lower shell, a gear (2) and a rack (3);
wherein,
the motor (1) is arranged in a motor groove reserved in the lower shell (5), the gear (2) is arranged on a motor shaft (1 a) of the motor (1), and the outer end part of the motor shaft (1 a) is supported by a supporting and limiting structure of the lower shell (5) and limits the movement of the motor shaft in the disengaging direction;
the rack (3) is meshed and driven above the gear (2), and the effective meshing distance between the rack and the gear (2) is ensured through a limit groove reserved in the lower shell (5) and the shaft (6);
the rack (3) is integrally in a block structure and is arranged in a limit groove reserved in the lower shell (5), the limit groove reserved in the lower shell (5) is a U-shaped groove, and the U-shaped groove provides guiding of the meshing direction for the rack (3) and simultaneously limits the disengagement position of the rack;
the shaft (6) is either a separate shaft, or is part of the lower housing (5), or is part of the rack (3);
when the shaft (6) adopts a single shaft, the lower part of the rack (3) is a meshing tooth part (3 b) which is matched and driven with the gear (2), a long-strip groove hole (3 a) is formed in the middle part of the rack, and the shaft (6) is simultaneously connected in the long-strip groove hole (3 a) and a shaft hole (5 a) reserved in the lower shell (5) in a penetrating way; the shaft (6) is limited by a long slotted hole (3 a) of the rack (3) or a shaft hole (5 a) of the lower shell (5);
when the shaft (6) is a part of the lower shell (5), one end of the shaft (6) is rigidly connected to the lower shell (5), and the other end of the shaft penetrates through a long-strip groove hole (3 a) formed in the rack (3);
when the shaft (6) is a part of the rack (3), one end of the shaft (6) is rigidly connected to the rack (3), and the other end of the shaft is embedded in a long shaft hole reserved in the lower shell (5);
the shaft (6), the long slot hole (3 a), the long shaft hole and the motor shaft (1 a) are parallel to each other;
the supporting and limiting structure on the lower shell (5) for the outer end part of the motor shaft (1 a) comprises a transverse supporting structure for bearing the shaft end and a vertical plugging structure for limiting the shaft end to move along the axial direction;
the rack (3) is of a block-shaped structure which is integrally U-shaped, the upper shell (4) is provided with an inverted U-shaped slot, and when the upper shell and the lower shell are assembled, the inverted U-shaped slot of the upper shell (4) stably positions the rack (3) in the shell.
2. An automobile door lock characterized by having the drive mechanism according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549016.6A CN108798308B (en) | 2018-05-31 | 2018-05-31 | Driving mechanism of automobile door lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549016.6A CN108798308B (en) | 2018-05-31 | 2018-05-31 | Driving mechanism of automobile door lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798308A CN108798308A (en) | 2018-11-13 |
| CN108798308B true CN108798308B (en) | 2024-02-02 |
Family
ID=64089805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810549016.6A Active CN108798308B (en) | 2018-05-31 | 2018-05-31 | Driving mechanism of automobile door lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798308B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219523A (en) * | 2019-05-31 | 2019-09-10 | 陕西疆晨信息科技有限公司 | A kind of electric burglar-proof lock |
| CN114458106B (en) * | 2021-12-29 | 2023-03-21 | 合肥创佳汽车电器有限公司 | Automobile door lock fastener assembly based on M4 |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069001U (en) * | 1990-06-16 | 1991-01-09 | 叶锭光 | Electric clocks for car door |
| EP1174314A2 (en) * | 2000-07-18 | 2002-01-23 | Trw Italia S.P.A. | Electric vehicle steering lock |
| CN2528853Y (en) * | 2002-04-01 | 2003-01-01 | 张威 | Actuator for central-control lock of vehicle |
| CN2931698Y (en) * | 2006-08-02 | 2007-08-08 | 廖军利 | Electric door lock controller of automobile |
| JP2012097503A (en) * | 2010-11-04 | 2012-05-24 | Mitsuba Corp | Linear driving device |
| CN104554140A (en) * | 2014-12-24 | 2015-04-29 | 天合汽车零部件（苏州）有限公司 | Electronic steering column lock |
| CN104995366A (en) * | 2012-12-15 | 2015-10-21 | 开开特股份公司 | Lock for a motor vehicle door |
| CN106121403A (en) * | 2016-08-28 | 2016-11-16 | 烟台三环锁业集团股份有限公司 | The drive mechanism of a kind of automobile door lock and there is the automobile door lock of this mechanism |
| CN106193839A (en) * | 2016-08-31 | 2016-12-07 | 常州市凯程精密汽车部件有限公司 | Automobile tail gate locking system |
| CN206571291U (en) * | 2017-03-06 | 2017-10-20 | 深圳市兆威机电有限公司 | A kind of bicycle electric tripper |
| CN208310474U (en) * | 2018-05-31 | 2019-01-01 | 烟台三环锁业集团股份有限公司 | A kind of driving mechanism of automobile door lock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10435923B2 (en) * | 2013-11-15 | 2019-10-08 | Taiger International Corp. | Swing type power door lock actuator |
-
2018
- 2018-05-31 CN CN201810549016.6A patent/CN108798308B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069001U (en) * | 1990-06-16 | 1991-01-09 | 叶锭光 | Electric clocks for car door |
| EP1174314A2 (en) * | 2000-07-18 | 2002-01-23 | Trw Italia S.P.A. | Electric vehicle steering lock |
| CN2528853Y (en) * | 2002-04-01 | 2003-01-01 | 张威 | Actuator for central-control lock of vehicle |
| CN2931698Y (en) * | 2006-08-02 | 2007-08-08 | 廖军利 | Electric door lock controller of automobile |
| JP2012097503A (en) * | 2010-11-04 | 2012-05-24 | Mitsuba Corp | Linear driving device |
| CN104995366A (en) * | 2012-12-15 | 2015-10-21 | 开开特股份公司 | Lock for a motor vehicle door |
| CN104554140A (en) * | 2014-12-24 | 2015-04-29 | 天合汽车零部件（苏州）有限公司 | Electronic steering column lock |
| CN106121403A (en) * | 2016-08-28 | 2016-11-16 | 烟台三环锁业集团股份有限公司 | The drive mechanism of a kind of automobile door lock and there is the automobile door lock of this mechanism |
| CN106193839A (en) * | 2016-08-31 | 2016-12-07 | 常州市凯程精密汽车部件有限公司 | Automobile tail gate locking system |
| CN206571291U (en) * | 2017-03-06 | 2017-10-20 | 深圳市兆威机电有限公司 | A kind of bicycle electric tripper |
| CN208310474U (en) * | 2018-05-31 | 2019-01-01 | 烟台三环锁业集团股份有限公司 | A kind of driving mechanism of automobile door lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108798308A (en) | 2018-11-13 |
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