An automotive electric self-priming door lock structure

Abstract

An electric self - sucking door lock structure for automobiles solves the technical deficiencies of the existing locking and unlocking transmission mechanisms, such as complex technical structure, poor manufacturability, high cost, poor versatility of the core components of the lock mechanism, difficult maintenance, and inconvenient emergency unlocking. The technical solution is as follows: The power control part adopts the transmission mode of worm and gear and rack and pinion. The control protrusion on the rack controls the locking of the locking plate with ratchet teeth and the unlocking of the control plate with pawl respectively through electric drive. The emergency unlocking part pushes the emergency control pin to move through the emergency unlocking slide plate, and the emergency control pin drives the emergency unlocking control plate to rotate. Manual unlocking is achieved by pushing the control plate with pawl 3 - 2 through the emergency control groove to make the pawl lose control of the ratchet teeth. The beneficial effects are as follows: The structure is simple and compact, the work is stable and reliable, the assembly processability is good, it is convenient for maintenance and replacement of parts, the manufacturing cost is reduced, and the emergency unlocking is convenient. By changing the shape of the housing and the connecting characteristic dimensions, it can be applied to different vehicles.

Description

Technical Field

[0001] The present invention relates to a lock, in particular to an automotive electric self - sucking door lock structure with rack drive and manual emergency unlocking. Background Art

[0002] With the development of society, automobiles have become a means of transportation for every household. To facilitate use and improve the degree of automation control of automobiles, electric vehicle doors have gradually been applied to the tailgates of various vehicles, especially the tailgates of SUVs or MPVs. In the prior art, the automotive electric door lock structure is complex, has poor manufacturability, is difficult to repair, requires the overall replacement of the electric door lock when any component fails, increases the use cost, and is inconvenient to use for emergency unlocking. Summary of the Invention

[0003] To overcome the technical deficiencies of the prior art automotive electric door lock, such as complex structure, poor manufacturability, difficult repair, and inconvenient emergency unlocking, the present invention discloses an automotive electric self - sucking door lock structure.

[0004] The technical solution adopted by the present invention to achieve the invention purpose is: an automotive electric self - sucking door lock structure, which includes: a housing part, a power control part, a locking plate control part, and an emergency unlocking part. The power control part, the locking plate control part, and the emergency unlocking part are installed in the housing part.

[0005] The power control part includes: a drive motor, a worm, a worm gear double - gear, a reduction double - gear, and a rack. The drive motor is fixed on the lower housing in the housing part, and the output shaft of the drive motor is in transmission connection with the rack through the worm, the worm gear double - gear, and the reduction double - gear.

[0006] The worm gear double - gear is sleeved on the clutch control shaft through a clutch spring, and one end of the clutch control shaft is arranged outside the lower housing.

[0007] The rack is slidably installed in the lower housing of the housing part, and a control projection is arranged on the rack.

[0008] B. The locking plate control part includes: a locking plate with ratchet teeth and a control plate with ratchet claws. The locking plate with ratchet teeth is rotatably supported on the lower housing through a locking plate torsion spring, and the control plate with ratchet claws is rotatably supported on the lower housing through a control plate torsion spring. The ratchet teeth on the locking plate with ratchet teeth correspond to the ratchet claws on the control plate with ratchet claws in position.

[0009] The control plate with ratchet claws is respectively provided with an emergency control projection and an emergency control groove at the other end and the side of the ratchet claw. The emergency control projection is arranged at the position corresponding to the lock tongue opening on the lower housing.

[0010] C. The described emergency unlocking part includes: an emergency unlocking control board, an emergency unlocking seat, an emergency unlocking slide plate, and an unlocking slide plate return spring. The emergency unlocking control board is coaxially installed with the pawl control board via an unlocking control board return spring. Emergency control pins are provided on the corresponding surfaces of the emergency unlocking control board and the pawl control board, and the emergency control pins correspond to the emergency control grooves on the pawl control board. A manual unlocking pin is provided on the corresponding surface of the emergency unlocking control board and the lower housing. The manual unlocking pin is arranged in the hollow opening of the lower housing. A manual unlocking pin sliding groove is provided on the emergency unlocking seat, and the emergency unlocking seat is fixed at the hollow opening outside the lower housing. The manual unlocking pin on the emergency unlocking control board is arranged in the manual unlocking pin sliding groove. The emergency unlocking slide plate is slidably installed on the emergency unlocking seat via an unlocking slide plate return spring, and the manual unlocking pin on the emergency unlocking control board is arranged at one end of the emergency unlocking slide plate.

[0011] The beneficial effects of the present invention are as follows: simple structure, stable and reliable operation, good assembly processability, convenient maintenance and replacement of parts, reduced use cost, convenient emergency unlocking, and can be applied to different vehicles by changing the shape and connection dimensions of the housing.

[0012] The present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0013] Attached Figure 1 is a schematic diagram of the exploded structure of the components of the present invention.

[0014] Attached Figure 2 is a schematic diagram of the installation of the ratchet locking plate and the locking plate position switch dial of the present invention.

[0015] Attached Figure 3 is a schematic diagram of the installation of the rack plate and the rack seat of the present invention.

[0016] Attached Figure 4 is a schematic diagram of the installation of the emergency unlocking part of the present invention.

[0017] Attached Figure 5 is a partial cross-sectional schematic diagram of the power control part of the present invention.

[0018] Attached Figure 6 is a schematic diagram of the semi-locked state of the present invention.

[0019] Attached Figure 7 is a schematic diagram of the control of the locking state by the control protrusion on the rack of the present invention.

[0020] Attached Figure 8 is a schematic diagram of the state after the control protrusion on the rack of the present invention is locked and reset.

[0021] Attached Figure 9 is a schematic diagram of the unlocked state of the present invention.

[0022] AttachedFigure 10 Schematic diagram of the manual unlocking state of the present invention.

[0023] In the attached drawings, 1-1 is a drive motor, 1-2 is a worm, 1-3 is a worm gear double gear, 1-31 is a clutch spring, 1-32 is a clutch control shaft, 1-4 is a reduction double gear, 1-5 is a rack, 1-5A is a rack plate, 1-5B is a rack seat, 1-51 is a control projection, 2-1 is a lower housing, 2-11 is a lock tongue opening, 2-12 is a hollow opening, 3-1 is a locking plate with ratchet teeth, 3-1A is a locking plate position switch dial, 3-11 is a locking plate torsion spring, 3-12 is a ratchet tooth, 3-2 is a control plate with pawl, 3-21 is a control plate torsion spring, 3-22 is a pawl, 3-23 is an emergency control projection, 3-24 is an emergency control groove, 3-3 is a snap ring, 4-1 is an emergency unlocking control plate, 4-11 is an unlocking control plate return spring, 4-12 is a manual unlocking pin, 4-13 is an emergency control pin, 4-2 is an emergency unlocking seat, 4-21 is a manual unlocking pin sliding groove, 4-3 is an emergency unlocking slide plate, 4-4 is an unlocking slide plate return spring, 5-1 is a connecting wire. Detailed implementation mode

[0024] Referring to the attached drawings, an automotive electric self-locking door lock structure includes: a housing part, a power control part, a locking plate control part, and an emergency unlocking part. The power control part, the locking plate control part, and the emergency unlocking part are installed inside the housing part.

[0025] The power control part includes: a drive motor 1-1, a worm 1-2, a worm gear double gear 1-3, a reduction double gear 1-4, and a rack 1-5. The drive motor 1-1 is fixed on the lower housing 2-1 in the housing part. The output shaft of the drive motor 1-1 is in transmission connection with the rack 1-5 through the worm 1-2, the worm gear double gear 1-3, and the reduction double gear 1-4.

[0026] The worm gear double gear 1-3 is sleeved on the clutch control shaft 1-32 through a clutch spring 1-31. One end of the clutch control shaft 1-32 is arranged outside the lower housing 2-1.

[0027] The rack 1-5 is slidably installed inside the lower housing 2-1 in the housing part. A control projection 1-51 is arranged on the rack 1-5.

[0028] When the power control part works, the drive motor 1-1 drives the worm gear double gear 1-3 and the reduction double gear 1-4 through the worm 1-2 to move the rack 1-5. The control projection 1-51 on the rack 1-5 moves left and right, pushing the locking plate with ratchet teeth 3-1 and the control plate with pawl 3-2 to rotate, realizing the unlocking and locking control of the door lock.

[0029] When a fault occurs in the power control part and the rack 1-5 does not return to the normal position, and the control projection 1-51 on the rack 1-5 blocks the unlocking of the locking plate 3-1 with ratchet teeth, when emergency unlocking is required, by pulling out a part of the clutch control shaft 1-32 arranged at one end outside the lower housing 2-1, the worm 1-2 on the clutch control shaft is disengaged from the meshing state with the worm gear double gear 1-3, the self-locking force between the worm 1-2 and the worm gear double gear 1-3 is released, and the rack 1-5 can move under the action of an external force. At the same time, it cooperates with the separation of the locking plate 3-1 with ratchet teeth and the control plate 3-2 with ratchet claws to achieve manual emergency unlocking.

[0030] The power control part adopts the above structure, and has the advantages of simple structure, stable and reliable operation, good assembly processability, and convenient replacement of maintenance parts.

[0031] B. The described locking plate control part includes: a locking plate 3-1 with ratchet teeth and a control plate 3-2 with ratchet claws. The locking plate 3-1 with ratchet teeth is rotatably supported on the lower housing 2-1 through a locking plate torsion spring 3-11, and the control plate 3-2 with ratchet claws is rotatably supported on the lower housing 2-1 through a control plate torsion spring 3-21. Ratchet teeth (3-12) are provided on the locking plate 3-1 with ratchet teeth, and ratchet claws 3-22 are provided on the control plate 3-2 with ratchet claws, and the positions of the ratchet teeth 3-12 and the ratchet claws 3-22 correspond.

[0032] On the other end and side of the ratchet claw 3-22 of the control plate 3-2 with ratchet claws, an emergency control projection 3-23 and an emergency control groove 3-24 are respectively provided, and the emergency control projection 3-23 is arranged at a position corresponding to the lock tongue opening 2-11 on the lower housing 2-1.

[0033] When the locking plate control part works, under the action of the locking plate torsion spring 3-11, the locking plate 3-1 with ratchet teeth and under the action of the control plate torsion spring 3-21, the control plate 3-2 with ratchet claws, the ratchet teeth 3-12 and the ratchet claws 3-22 are in a meshing state. When the latch on the car door enters the locking groove on the locking plate 3-1 with ratchet teeth, the locking plate 3-1 with ratchet teeth enters a semi-locked state under the action of the latch on the car door, and the control projection 1-51 on the rack 1-5 pushes the locking plate 3-1 with ratchet teeth to rotate to the locking position. The electric tailgate lock is in the locked state, see the attachment Figure 7 。When the control projection 1-51 on the rack 1-5 moves in the reverse direction, it pushes the control plate 3-2 with ratchet claws to disengage the ratchet teeth 3-12 from the ratchet claws 3-22, so that the ratchet claws 3-22 lose control of the ratchet teeth 3-12, and the locking plate 3-1 with ratchet teeth is unlocked under the action of the locking plate torsion spring 3-11.

[0034] The function of the emergency control projection 3-23 is that when the electric tailgate lock fails to work properly during use, a tool is used to pry the control projection 3-23 on the pawl control plate 3-2 through the lock tongue opening 2-11 on the lower housing 2-1 to disengage the ratchet teeth 3-12 from the pawl 3-22.

[0035] C. The emergency unlocking part includes: an emergency unlocking control plate 4-1, an emergency unlocking seat 4-2, an emergency unlocking slide plate 4-3 and an unlocking slide plate return spring 4-4. The emergency unlocking control plate 4-1 is coaxially installed with the pawl control plate 3-2 via an unlocking control plate return spring 4-11. An emergency control pin 4-13 is provided on the corresponding surface of the emergency unlocking control plate 4-1 and the pawl control plate 3-2, and the emergency control pin 4-13 corresponds to the emergency control groove 3-24 on the pawl control plate 3-2. A manual unlocking pin 4-12 is provided on the corresponding surface of the emergency unlocking control plate 4-1 and the lower housing 2-1, and the manual unlocking pin 4-12 is arranged in the hollow opening 2-12 of the lower housing 2-1. A manual unlocking pin sliding groove 4-21 is provided on the emergency unlocking seat 4-2, and the emergency unlocking seat 4-2 is fixed at the hollow opening 2-12 outside the lower housing 2-1. The manual unlocking pin 4-12 on the emergency unlocking control plate 4-1 is arranged in the manual unlocking pin sliding groove 4-21. The emergency unlocking slide plate 4-3 is slidably installed on the emergency unlocking seat 4-2 via an unlocking slide plate return spring 4-4, and the manual unlocking pin 4-13 on the emergency unlocking control plate 4-1 is arranged at one end of the emergency unlocking slide plate 4-3.

[0036] When the electric tailgate lock fails to work properly during use, the emergency unlocking part needs to be activated to unlock. For the two failure situations of the electric tailgate lock: The first is that the control projection 1-51 on the rack 1-5 in the locking plate control part is in the normal position (the rack 1-5 is in the original position, and the control projection 1-51 does not block the unlocking of the ratchet locking plate 3-1), but the pawl 3-22 cannot disengage from the ratchet teeth 3-12. Push the emergency unlocking slide plate 4-3, the emergency unlocking slide plate 4-3 pushes the emergency control pin 4-13 to move, the emergency control pin 4-13 drives the emergency unlocking control plate 4-1 to rotate, and the manual unlocking pin 4-12 on the emergency unlocking control plate 4-1 pushes the pawl control plate 3-2 through the emergency control groove 3-24 to make the pawl 3-22 lose control of the ratchet teeth 3-12, realizing unlocking.

[0037] The second is that the control protrusion 1-51 on the rack 1-5 in the locking plate control part is in an abnormal position (the rack 1-5 has not returned to the original position, and the control protrusion will prevent the ratchet locking plate from rotating to unlock). At this time, first pull out the clutch control shaft 1-32 set at the outer end of the lower shell 2-1, and the worm 1-2 and the worm gear double gear 1-3 will be disengaged. The rack 1-5 can move freely without restraint under the action of external force, and then the first unlocking operation mentioned above is implemented.

[0038] In the embodiment of the present invention, the locking plate with ratchet teeth 3-1 and the control plate with ratchet pawls 3-2 are respectively connected to the mounting shaft through the clamping spring 3-3. The purpose of the invention is to improve the processability of the installation, so that the components on each mounting shaft can be installed relatively independently without being affected by other structures, which is convenient for maintenance and replacement of parts.

[0039] In the embodiment of the present invention, a locking plate position switch paddle 3-1A is also provided on the mounting shaft of the ratchet locking plate 3-1 in the locking plate control part, and the locking plate position switch paddle 3-1A is plugged into the end face of the ratchet locking plate 3-1. The purpose of the invention is to separately provide the locking plate position switch paddle, which is convenient for designing the installation position of the position switch in the housing, and at the same time simplifies the complexity of the shape of the ratchet locking plate 3-1.

[0040] In the embodiment of the present invention, the rack 1-5 in the power control part includes: a rack plate 1-5A and a rack seat 1-5B, and the rack plate 1-5A is installed on the rack seat 1-5B. The purpose of the invention is to simplify the complexity of the shape of the rack 1-5 and facilitate the maintenance and replacement of the rack 1-5.

[0041] In the embodiment of the present invention, the connecting wire 5-1 in the power control part is independently arranged as an exposed wire in the housing part. The purpose of the invention is to facilitate maintenance and replacement.

Claims

1. An electric self-priming door lock structure for an automobile, the structure comprises: a housing part, a power control part, a locking plate control part and an emergency unlocking part. The power control part, the locking plate control part and the emergency unlocking part are installed in the housing part. It is characterized in that: The power control part includes: a driving motor (1-1), a worm (1-2), a worm gear double gear (1-3), a reduction double gear (1-4) and a rack (1-5). The driving motor (1-1) is fixed on the lower housing (2-1) in the housing part. The output shaft of the driving motor (1-1) is in transmission connection with the rack (1-5) through the worm (1-2), the worm gear double gear (1-3) and the reduction double gear (1-4); The worm gear double gear (1-3) is sleeved on a clutch control shaft (1-32) through a clutch spring (1-31). One end of the clutch control shaft (1-32) is arranged outside the lower housing (2-1); The rack (1-5) is slidably installed in the lower housing (2-1) in the housing part, and a control projection (1-51) is arranged on the rack (1-5); The locking plate control part includes: a ratchet locking plate (3-1) and a ratchet pawl control plate (3-2). The ratchet locking plate (3-1) is rotatably supported on the lower housing (2-1) through a locking plate torsion spring (3-11), and the ratchet pawl control plate (3-2) is rotatably supported on the lower housing (2-1) through a control plate torsion spring (3-21). A ratchet (3-12) is arranged on the ratchet locking plate (3-1), and a ratchet pawl (3-22) is arranged at one end of the ratchet pawl control plate (3-2). The ratchet (3-12) and the ratchet pawl (3-22) are in corresponding positions; An emergency control projection (3-23) and an emergency control groove (3-24) are respectively arranged at the other end of the ratchet pawl control plate (3-2) and on the side surface of the ratchet pawl (3-22) end. The emergency control projection (3-23) is arranged at a position corresponding to the lock tongue opening (2-11) on the lower housing (2-1); The described emergency unlocking part includes: an emergency unlocking control board (4-1), an emergency unlocking seat (4-2), an emergency unlocking slide plate (4-3), and an unlocking slide plate return spring (4-4). The emergency unlocking control board (4-1) is coaxially installed with the pawl control board (3-2) via an unlocking control board return spring (4-11). An emergency control pin (4-13) is provided on the corresponding surface of the emergency unlocking control board (4-1) and the pawl control board (3-2). The emergency control pin (4-13) corresponds to the emergency control slot (3-24) on the pawl control board (3-2). A manual unlocking pin (4-12) is provided on the corresponding surface of the emergency unlocking control board (4-1) and the lower housing (2-1). The manual unlocking pin (4-12) is arranged in the hollow opening (2-12) of the lower housing (2-1). A manual unlocking pin sliding slot (4-21) is provided on the emergency unlocking seat (4-2). The emergency unlocking seat (4-2) is fixed at the hollow opening (2-12) outside the lower housing (2-1). The manual unlocking pin (4-12) on the emergency unlocking control board (4-1) is arranged in the manual unlocking pin sliding slot (4-21). The emergency unlocking slide plate (4-3) is slidably installed on the emergency unlocking seat (4-2) via an unlocking slide plate return spring (4-4). The manual unlocking pin (4-12) on the emergency unlocking control board (4-1) is arranged at one end of the emergency unlocking slide plate (4-3). The described ratchet locking plate (3-1) and the pawl control board (3-2) are respectively limited and clamped to the mounting shaft via snap rings (3-3). On the mounting shaft of the ratchet locking plate (3-1) in the locking plate control part, a locking plate position switch dial (3-1A) is further provided. The locking plate position switch dial (3-1A) is inserted into the end face of the ratchet locking plate (3-1). The rack (1-5) in the power control part includes: a rack plate (1-5A) and a rack seat (1-5B). The rack plate (1-5A) is installed on the rack seat (1-5B). The connecting wire (5-1) in the power control part is independently arranged as an exposed wire inside the housing part.

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