Self-suction mechanism for self-suction lock and self-suction lock with self-suction mechanism

Abstract

The invention relates to the field of automobile door locks, in particular to a self-suction mechanism for a self-suction lock and the self-suction lock with the self-suction mechanism. Comprising a driving unit and a control unit. The driving unit comprises a thrust nut; the thrust nut comprises a nut body, and a nut push column is arranged on the nut body. The control unit comprises a locking connecting rod; the locking connecting rod comprises a locking deflector rod; a pushing pin is arranged on the locking deflector rod; the nut push column is used in cooperation with the push pin. According to the self-suction mechanism disclosed by the invention, the thrust nut with the nut push column and the locking deflector rod with the push pin are matched for use, so that the nut push column and the push pin are in point contact, abrasion between parts can be reduced, and the service life is prolonged; and meanwhile, the contact noise of the thrust nut and the locking deflector rod is low, the friction force is small, and the transmission is smoother and more stable.

Description

Technical Field

[0001] The present invention relates to the field of automobile door locks, in particular to a self-priming mechanism for a self-priming lock and a self-priming lock having the self-priming mechanism. Background Art

[0002] The current development of automobile electrification and intelligence is advancing by leaps and bounds. Against this background, more and more car models are beginning to be equipped with self-priming locks.

[0003] Existing self-priming locks require two motors and two sets of transmission mechanisms to achieve unlocking and locking functions. They have many parts, are large in size and weight, and have complex structures, cumbersome processes, and high costs.

[0004] In addition, when the self-priming mechanism in the traditional self-priming lock is pushed, a flange plate structure is generally set on the edge of the locking lever, and the subsequent driving component pushes the flange plate to realize the rotation operation of the locking lever; this causes the locking lever and the driving component to have a larger contact area, generally surface contact or line contact, such as the content disclosed in patent 201821332605.0-Self-priming mechanism of self-priming lock, self-priming lock and vehicle; although this contact method can realize the rotation operation of the locking lever and realize the closed locking of the lock hook; but because the movement trajectory of the locking lever is arc-shaped, in actual use, the driving component and the locking lever will generate problems such as large contact noise and large friction due to the large contact area; this will affect the smoothness of the self-priming lock transmission.

[0005] At the same time, traditional self-priming locks take up too much space vertically, and when actually arranged, they have high space requirements and are not convenient to arrange on the tailgate.

[0006] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing self-priming lock. Summary of the Invention

[0007] The purpose of the present invention is to provide a self-priming mechanism which can reduce excessive abnormal noise when a locking lever is locked.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A self-priming mechanism for a self-priming lock, a drive unit and a control unit; the drive unit includes a thrust nut; the thrust nut includes a nut body, and a nut push column is provided on the nut body;

[0010] The control unit includes a locking connecting rod; the locking connecting rod includes a locking lever; a pushing pin is provided on the locking lever; the nut pushing pin is used in conjunction with the pushing pin.

[0011] The nut push column and the push column pin are arranged to intersect.

[0012] A lubricating layer is provided on the pushing pin.

[0013] A self-priming lock comprises a housing assembly and a lock body assembly; the lock body assembly comprises the self-priming mechanism, a drive assembly and a lock body assembly;

[0014] The drive assembly is connected to the lock body assembly via a self-priming mechanism;

[0015] The lock body assembly includes a lock hook and a pawl arranged in the housing assembly; the pawl is used in conjunction with the lock hook;

[0016] The self-priming mechanism further includes an unlocking lever; the unlocking lever is used in conjunction with a pawl;

[0017] The locking hook is used in conjunction with the locking connecting rod in the self-priming mechanism;

[0018] The thrust nut in the driving unit can drive the pawl to rotate by controlling the locking link;

[0019] The thrust nut in the driving unit can drive the lock hook to rotate by controlling the unlocking lever.

[0020] The self-priming lock also includes an emergency unlocking mechanism;

[0021] The emergency unlocking mechanism includes an emergency reset lever and an emergency unlocking lever;

[0022] The emergency reset lever is connected to the housing assembly via a rotating portion, and the emergency reset lever extends into the housing assembly and cooperates with the locking link;

[0023] The emergency unlocking lever is connected to the housing assembly via a rotating portion; the emergency unlocking lever extends into the housing assembly and cooperates with the unlocking lever.

[0024] The emergency reset lever is connected to the emergency unlock lever through a linkage portion; the linkage portion includes a linkage rod provided on the emergency unlock lever; the emergency reset lever and the emergency unlock lever are arranged to intersect; the emergency reset lever is pressed against the linkage rod.

[0025] The housing assembly includes a transverse housing and a longitudinal housing; the transverse housing and the longitudinal housing are arranged to intersect;

[0026] The transverse housing includes a lock body shell, wherein the lock body shell is provided with a bottom plate and a lock body shell disposed on the bottom plate;

[0027] The longitudinal housing includes an actuator housing and an actuator upper cover;

[0028] The drive assembly is arranged in the longitudinal housing;

[0029] The lock body assembly is arranged in the transverse housing;

[0030] The driving assembly includes a driving motor, which is connected to a thrust nut through a transmission mechanism; the transmission mechanism includes a driving screw; the thrust nut is sleeved on the driving screw; the driving screw and the transverse shell are arranged parallel to each other.

[0031] The first transmission component and the second transmission component are stacked.

[0032] The transmission mechanism includes a first-stage worm connected to the motor, a first transmission component and a second transmission component; the first transmission component includes a first-stage large gear and a first-stage small gear; the second transmission component includes a second-stage gear and a driving screw; a driving unit is provided on the driving screw.

[0033] The first transmission component is a double gear; the secondary gear and the driving screw are an integrated structure; the secondary gear and the driving screw are connected by injection molding; the first large gear is a helical gear; and the secondary gear is a spur gear.

[0034] The first-stage large gear, the first-stage small gear, the second-stage gear and the thrust nut in the first transmission component are made of plastic material; the driving screw and the pushing pin are made of metal material.

[0035] The advantages of the present invention are:

[0036] The invention discloses a self-priming mechanism for a self-priming lock and a self-priming lock with the self-priming mechanism.

[0037] The self-priming mechanism disclosed by the present invention cooperates with a thrust nut with a nut push column and a locking lever with a push column pin, so that point contact is achieved between the nut push column and the push column pin, which can reduce wear between the parts and increase the service life; at the same time, the contact noise between the thrust nut and the locking lever is low, the friction is small, and the transmission is smoother and more stable.

[0038] At the same time, the setting of the emergency unlocking mechanism can make the self-priming lock have a mechanical reset function; when in use, the emergency unlocking mechanism can be pushed to disengage the pawl and the lock hook to achieve unlocking, thereby ensuring the safety of the passengers in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0040] Figure 1 It is an exploded schematic diagram of the present invention;

[0041] Figure 2Schematic diagram of the emergency reset lever, emergency unlock lever and actuator housing embedded in soft rubber;

[0042] Figure 3 It is a structural schematic diagram of the copper sheet of the connector of the present invention;

[0043] Figure 4 This is a schematic diagram of the connector and the actuator housing of the present invention being injection molded into one piece;

[0044] Figure 5 This is a schematic diagram of the structure of the present invention after removing the actuator cover;

[0045] Figure 6 It is a schematic diagram of the internal structure of the present invention;

[0046] Figure 7 It is a structural schematic diagram of the present invention;

[0047] Figure 8 It is a structural schematic diagram of the lock body assembly of the present invention;

[0048] Figure 9 This is a schematic structural diagram of the lock body assembly of the present invention after being connected to the emergency unlocking mechanism.

[0049] The marks in the above figure are:

[0050] 1. Motor, 2. First-stage worm gear, 101. First transmission component, 102. Second transmission component, 4. First-stage large gear, 5. First-stage small gear, 7. Second-stage gear, 8. Thrust nut, 9. Screw, 11. Ratchet rivet, 12. Lock hook rivet, 13. Ratchet spring, 14. Ratchet, 15. Ratchet spring, 16. Lock hook, 19. Unlocking lever, 22. Push pin, 23. Locking lever, 24. Reset switch, 25. Ratchet switch, 26. Lock hook switch, 27. Emergency unlocking lever, 28. Emergency reset lever, 31. Actuator housing, 32. Connector copper sheet, 33. Lock body housing, 34. Soft rubber, 35. Lock body housing, 36. Base plate, 37. Actuator cover, 38. Screw, 39. Connector. DETAILED DESCRIPTION

[0051] The specific implementation of the present invention will be further explained in detail below by describing the best embodiment with reference to the accompanying drawings.

[0052] The self-priming mechanism disclosed in the present invention mainly includes a driving unit and a control unit; the driving unit includes a thrust nut 8; the thrust nut 8 includes a nut body 81, and a nut push column 82 is provided on the nut body 81; the control unit includes a locking link 2-2; the locking link 2-2 includes a locking lever 23; the locking lever 23 is provided with a pushing column pin 22; the nut push column 82 is used in conjunction with the pushing column pin 22; the self-priming mechanism disclosed in the present invention uses the thrust nut 8 with the nut push column 82 and the locking lever 23 with the pushing column pin 22 in conjunction with each other, so that the nut push column 82 and the pushing column pin 22 are in point contact, which can reduce wear between parts and increase service life; at the same time, the contact noise between the thrust nut 8 and the locking lever 23 can be low, the friction can be small, and the transmission can be smoother and more stable.

[0053] The self-priming mechanism disclosed in the present invention is mainly used in the field of self-priming locks, is located inside the self-priming lock, and is used to control the opening and closing of the self-priming lock.

[0054] Specifically, the self-priming mechanism disclosed in the present invention mainly includes a driving unit and a control unit; the control unit is mainly used to control the rotation of the lock hook 16 or the pawl 14 in the self-priming lock to realize the opening and closing control of the self-priming lock; and the setting of the driving unit is mainly used to drive the control unit to move, so as to facilitate the change of the working condition of the self-priming lock.

[0055] In addition, the driving unit described in the present invention includes a thrust nut 8; the thrust nut 8 is sleeved on the driving screw 9 of the driving assembly, and the position of the thrust nut 8 is subsequently changed by rotating the driving screw 9. At the same time, the present invention requires that the thrust nut 8 is to perform linear motion, so in actual use, it needs to be used in conjunction with the shell assembly. Through the limitation of the shell assembly, the thrust nut 8 cannot rotate with the driving screw 9. Based on such a setting, the rotational motion of the thrust nut 8 is converted into linear motion.

[0056] At the same time, the thrust nut 8 in the present invention includes a nut body 81, which is the main structure of the thrust nut 8, and a nut push column 82 is provided on the nut body 81; the nut push column 82 is subsequently mainly used in conjunction with the locking lever 23 and the unlocking lever 19, and the locking and unlocking operations of the lock hook 16 are realized by toggling or driving the corresponding lever to perform corresponding actions.

[0057] The control unit includes a locking link 2-2; in the present invention, the main structure of the locking link is similar to the self-priming mechanism, self-priming lock and vehicle disclosed in Patent 201821332605.0-Self-priming Lock; the overall action and control logic are also similar. The main difference between the present invention and the patent is in structure. In the present invention, the locking link 2-2 includes a locking lever 23; the locking lever 23 is used to push the lock hook 16, which facilitates the rotation and locking of the lock hook 16 when used later, and a pushing pin 22 is provided on the locking lever 23; the nut push column 82 is used in conjunction with the pushing pin 22; the setting of the pushing pin 22 forms a protrusion on the locking lever 23, and when used later, the nut push column 82 on the thrust nut 8 cooperates with the pushing pin 22; based on such a setting, the contact area between the traditional drive unit and the locking lever 23 can be changed to reduce friction noise during operation.

[0058] Furthermore, in the present invention, the nut push column 82 and the pushing column pin 22 are arranged to intersect; based on such an arrangement, the present invention enables the nut push column 82 and the pushing column pin 22 to form a point contact, and when the thrust nut 8 subsequently pushes the unlocking lever 19, the friction between the two is always a point contact, thereby making the contact noise low, the friction small, and the transmission smoother and more stable.

[0059] At the same time, a lubricating layer is provided on the pushing pin 22 in the present invention. The setting of the lubricating layer can better reduce the friction between the pushing pin 22 and the nut push pin 82, and reduce contact noise. Of course, other coatings that can reduce the roughness of the outer surface of the pushing pin 22 are also feasible. The specific coating can be selected according to needs.

[0060] In actual selection, the type of lubricating layer can be selected according to needs, for example, a Teflon layer can be selected.

[0061] A self-priming lock comprises a shell assembly and a lock body assembly; the lock body assembly comprises a drive assembly; the drive assembly comprises a drive motor 1, and the drive motor 1 is connected to the lock body assembly through a transmission mechanism; the transmission mechanism comprises a first-stage worm 2 connected to the motor 1, a first transmission component 101 and a second transmission component 102; the first transmission component 101 and the second transmission component 102 are stacked; the self-priming lock disclosed in the present invention can well reduce the lateral size of the self-priming lock actuator through the stacked arrangement of the first transmission component 101 and the second transmission component 102, thereby reducing the requirements for the thickness of the tailgate and the corresponding back door when the self-priming lock is subsequently installed, thereby facilitating the actual arrangement of the self-priming lock.

[0062] At the same time, it should be noted that the stacked arrangement of the first transmission component 101 and the second transmission component 102 of the present invention essentially tends to be stacked in the longitudinal space. In subsequent arrangements, the stacked connection can be achieved through the engagement of gears.

[0063] At the same time, when the first transmission component 101 and the second transmission component 102 of the present invention are arranged on the vehicle, the first transmission component 101 and the second transmission component 102 are arranged along the Z direction of the vehicle.

[0064] A self-priming lock comprises a shell assembly and a lock body assembly; the shell assembly and the lock body assembly disclosed in the present invention constitute the main structure of the self-priming lock, and the lock body assembly in the present invention comprises the self-priming mechanism, the driving assembly and the lock body assembly; the driving assembly is connected to the lock body assembly through the self-priming mechanism; when subsequently used, the corresponding action of the driving assembly can drive the self-priming mechanism to move, thereby realizing the rotation of the lock hook 16, realizing the opening and closing of the self-priming lock; and the lock body assembly comprises a lock hook 16 and a pawl 14 arranged in the shell assembly; the lock hook 16 cooperates with the lock buckle when in use to realize the closing of the corresponding door body The pawl 14 is in a position to limit the lock; the pawl 14 plays a very good limiting role, which makes it convenient to control the position of the lock hook 16 so that it can overcome the rotational force of the torsion spring connected to it, so that the lock hook 16 remains in its position; so when in use, the pawl 14 is used in conjunction with the lock hook 16; when the self-priming lock is closed, the pawl 14 and the lock hook 16 are engaged with each other, and the pawl 14 limits the position of the lock hook 16, and when the self-priming lock needs to be opened, the pawl 14 rotates, so that the pawl 14 is disengaged from the lock hook 16, so that the restraining force of the pawl 14 on the lock hook 16 is released, so that the lock hook 16 returns to its position under the drive of the corresponding torsion spring, thereby realizing the actual unlocking operation.

[0065] At the same time, in the present invention, the self-priming mechanism mainly plays a linkage role, which facilitates the driving component to control the working condition of the lock body component during actual use.

[0066] Specifically, the self-priming mechanism in the present invention also includes an unlocking lever 19; the unlocking lever 19 is used in conjunction with the pawl 14; the lock hook 16 is used in conjunction with the locking link 2-2 in the self-priming mechanism; the thrust nut 8 in the driving unit can drive the pawl 14 to rotate by controlling the unlocking lever 19; the thrust nut 8 in the driving unit can drive the lock hook 16 to rotate by controlling the locking link 2-2; based on the above design, the self-priming mechanism can realize the change of the position of the lock hook 16 under the drive and push of the thrust nut 8, and then realize the corresponding unlocking and locking operations.

[0067] Furthermore, the self-priming lock described in the present invention also includes an emergency unlocking mechanism; through the provision of the emergency unlocking mechanism, the emergency unlocking mechanism can be controlled to unlock the self-priming lock in an emergency to ensure the safety of members.

[0068] Specifically, the emergency unlocking mechanism disclosed in the present invention includes an emergency reset lever 28 and an emergency unlocking lever 27 ; the emergency reset lever 28 and the emergency unlocking lever 27 respectively control the corresponding locking lever 23 and unlocking lever 19 to achieve corresponding unlocking operations.

[0069] The emergency reset lever 28 of the present invention is connected to the housing assembly via a rotating portion, and the emergency reset lever 28 extends into the interior of the housing assembly and cooperates with the locking link 2-2; the emergency unlocking lever 27 is connected to the housing assembly via a rotating portion; the emergency unlocking lever 27 extends into the interior of the housing assembly and cooperates with the unlocking lever 19; the emergency reset lever 28 and the emergency reset lever 28 are connected to the housing assembly by a rotating portion near the middle area, where the rotating portion can rotate a shaft, a rotating pin, etc., which serves as the rotation point of the emergency unlocking lever 27 and the emergency reset lever 28 in subsequent use; During subsequent use, by pulling or pushing the emergency reset lever 28, the emergency reset lever 28 drives the emergency unlocking lever 27 to move. The emergency reset lever 28 is located at one end of the shell assembly and moves the locking link 2-2 to disengage the lock hook 16, thereby releasing the push of the locking link 2-2 on the lock hook 16; at the same time, the emergency unlocking lever 27 pushes the unlocking lever 19 to rotate, so that the unlocking lever 19 pushes the pawl 14 to rotate, so that the pawl 14 releases the restraint on the lock hook 16, so that the lock hook 16 rotates under the drive of the torsion spring connected to it, thereby realizing the unlocking operation of the self-priming lock.

[0070] Furthermore, in the present invention, the emergency reset lever 28 and the emergency unlocking lever 27 are connected by a linkage portion. By setting the linkage portion, the linkage of the movement of the emergency reset lever 28 and the emergency unlocking lever 27 can be achieved. There are various ways to set the linkage portion, as long as the linkage movement of the emergency reset lever 28 and the emergency unlocking lever 27 can be achieved, in essence, as long as the movement of the emergency reset lever 28 can be controlled, it is theoretically feasible for the emergency reset lever 28 to drive the movement of the emergency unlocking lever 27.

[0071] Of course, for better implementation effect, the present invention includes a linkage rod 271 arranged on the emergency unlocking lever 27; the emergency reset lever 28 is arranged to intersect with the emergency unlocking lever 27; the emergency reset lever 28 is pressed on the linkage rod 271; the linkage rod 271 is equivalent to adding a transverse rod structure to the emergency unlocking lever 27. When the emergency reset lever 28 is pulled or pushed, the emergency reset lever 28 squeezes the linkage rod 271, and the linkage rod 271 drives the emergency unlocking lever 27 to rotate under the action of squeezing, thereby realizing the corresponding rotation operation.

[0072] Furthermore, the shell assembly described in the present invention includes a transverse shell 1-1 and a longitudinal shell 1-2; the transverse shell 1-1 of the present invention is mainly used for the arrangement and placement of the lock body assembly, while the longitudinal shell 1-2 is mainly used for the installation and arrangement of the drive assembly. At the same time, the transverse shell 1-1 and the longitudinal shell 1-2 are arranged to intersect in the present invention; the angle between the transverse shell 1-1 and the longitudinal shell 1-2 can be selected according to the actual working conditions. Generally, the angle between the longitudinal shell 1-2 and the transverse shell 1-1 is required to be an obtuse angle. Such a setting can reduce the overall height of the shell assembly and facilitate its arrangement in the tailgate during subsequent use.

[0073] At the same time, the transverse shell 1-1 described in the present invention includes a lock body shell 33, which serves as an external protective function. The lock body shell is used for the installation and arrangement of components such as the lock hook 16 and the pawl 14. The setting of the base plate 36 facilitates the connection and installation of components such as the lock body shell and the actuator shell 31; specifically, the lock body shell 33 described in the present invention is provided with a base plate 36 and a lock body shell arranged on the base plate 36. The setting of the lock body shell 33, the base plate 36 and the lock body shell facilitates the arrangement and placement of the lock body assembly in the shell assembly.

[0074] At the same time, the longitudinal shell 1-2 in the present invention includes an actuator shell 31 and an actuator cover 37; the coordinated use of the actuator shell 31 and the actuator cover 37 facilitates the arrangement of the drive assembly, and also facilitates the design and placement of components such as connector copper sheets.

[0075] In addition, in the present invention, the drive assembly is arranged in the longitudinal shell 1-2; the lock body assembly is arranged in the transverse shell 1-1; the drive assembly includes a drive motor 1, and the drive motor 1 is connected to the thrust nut 8 through a transmission mechanism; the transmission mechanism includes a drive screw 9; the thrust nut 8 is sleeved on the drive screw 9; the drive screw 9 and the transverse shell 1-1 are arranged parallel to each other; the drive motor 1 drives the drive screw 9 to rotate through the transmission mechanism, and the drive screw 9 adjusts the thrust nut 8 to have a tendency to rotate, and the thrust nut 8 is limited by the inner cavity of the shell assembly, so that the thrust nut 8 cannot rotate, and because of the rotation of the drive screw 9, the thrust nut 8 will move laterally along the axial direction of the drive screw 9; thereby facilitating the control of the action of the self-priming mechanism during subsequent use.

[0076] Furthermore, the transmission mechanism in the present invention includes a first-stage worm 2 connected to the motor 1, a first transmission component 101 and a second transmission component 102; the first transmission component 101 includes a first-stage large gear 4 and a first-stage small gear 5; the second transmission component 102 includes a second-stage gear 7 and a driving screw 9; the driving screw 9 is provided with a driving unit; through the setting of the transmission mechanism, the present invention can realize the electric unlocking and electric locking of the self-priming lock using a motor 1 and a set of transmission mechanisms, achieving the purpose of few parts, small size, light weight, simple structure and low cost.

[0077] Furthermore, in the present invention, the first transmission component 101 and the second transmission component 102 are stacked; based on such a configuration, the first transmission component 101 and the second transmission component 102 are equivalent to being distributed along the Z axis of the vehicle when assembled on the vehicle. Such a configuration can reduce the lateral width occupied by the transmission mechanism, thereby reducing the dependence on the thickness of the tailgate; in other words, such an arrangement can make the arrangement of the self-priming lock in the tailgate more convenient, and at the same time can reduce the overall thickness of the actuator housing 31, making the actual installation layout more convenient.

[0078] At the same time, during actual assembly, the driving screw 9 and the transverse shell 1-1 are arranged parallel to each other; such an arrangement facilitates the thrust nut 8 to better control each shift rod when moving laterally on the driving screw 9.

[0079] Furthermore, in the present invention, the first transmission component 101 is a double gear; the secondary gear 7 and the driving screw 9 are an integrated structure; the secondary gear 7 and the driving screw 9 are connected by an injection molding process; the first large gear 4 is a helical gear; the secondary gear 7 is a spur gear; the present invention adopts a worm-helical gear, spur gear-thrust nut 8 deceleration scheme, with a large deceleration ratio and a simple structure; a small-power motor 1 can be selected for the same output force requirement, thereby reducing the volume, weight and cost of the motor 1.

[0080] In addition, the first transmission component 101 is a double gear; the secondary gear 7 and the driving screw 9 are an integrated structure; the secondary gear 7 and the driving screw 9 are connected by an injection molding process; such a setting ensures the integrity of the first transmission component 101 and the second transmission component 102, reduces the existence of separate parts, and facilitates subsequent assembly operations.

[0081] Furthermore, in the present invention, the first-stage large gear 4 and the first-stage small gear 5, the second-stage gear 7 and the thrust nut 8 in the first transmission component 101 are made of plastic material; the driving screw 9 and the pushing pin 22 are made of metal material; through the above design, the problem of noise easily generated by friction between metals can be solved, while reducing the cost of a single part.

[0082] specific:

[0083] The present invention discloses a self-priming lock; the self-priming lock mainly includes a shell component and a lock body assembly, the lock body assembly includes a self-priming mechanism, a drive component and a lock body assembly; the drive component includes a drive motor 1, and the drive motor 1 is connected to the lock body assembly through a transmission mechanism and a self-priming mechanism.

[0084] The transmission mechanism includes a first-stage worm 2 fixedly connected to the motor 1 and a first-stage large gear 4 meshing with the first-stage worm 2; includes a first-stage small gear 5 fixedly connected to the above-mentioned first-stage large gear 4, and a second-stage gear 7 meshing with the first-stage small gear 5; also includes a screw 9 fixedly connected to the above-mentioned second-stage gear 7 and a thrust nut 8 screwed therewith, and the thrust nut 8 is used to output thrust to the unlocking lever 19 and the locking lever 23 when unlocking and locking.

[0085] The lock assembly disclosed in the present invention includes a pawl 14, a lock hook 16, a pawl switch 25, a lock hook switch 26, a reset switch 24, a connector copper sheet 32, a pawl spring 15 that applies elastic force to the pawl 14, and a lock hook spring 15 that applies elastic force to the lock hook 16. The pawl 14 cooperates with the unlocking lever 19. The pawl 14 and the pawl spring 13 are sequentially mounted on the pawl rivet 11, which is riveted to the bottom plate 36 of the housing assembly. The lock hook 16 and the lock hook spring 15 are sequentially mounted on the lock hook rivet 12, which is riveted to the bottom plate 36. The pawl switch 25, the lock hook switch 26, and the reset switch 24 are mounted on the actuator housing 31.

[0086] The actuator cover 37 is mounted on the actuator housing 31 and the base plate 36 by screws 38 . The actuator housing 31 is mounted in conjunction with the lock housing 35 by screws 38 and is positioned and mounted on the base plate 36 by positioning pins.

[0087] The connector copper sheet 32 ​​is embedded in the actuator housing 31. Figure 1 .

[0088] When the drive assembly rotates forward, the thrust nut 8 pushes the unlocking lever 19 to rotate; the unlocking lever 19 pushes the pawl 14 to rotate, and the lock hook 16 is pushed to the unlocking position under the elastic force exerted by the lock hook spring 15 and the reaction force of the body seal, realizing electric unlocking. After unlocking is completed, the drive assembly reverses and resets; see Figure 1 .

[0089] The driving assembly is reversed, and the thrust nut 8 drives the locking lever 23 to rotate, and drives the push pin 22 to drive the lock hook 16 to rotate; the lock hook 16 overcomes the elastic force applied by the lock hook spring 15 and the body seal reaction force to rotate to the fully locked position, realizing electric self-priming locking. After the locking is completed, the driving assembly rotates forward and resets; see Figure 1 .

[0090] When the pawl 14, the lock hook 16, and the thrust nut 8 move, their structural features will trigger the pawl switch 25, the lock hook switch 26, and the reset switch 24. The combined information of the pawl switch 25, the lock hook switch 26, and the reset switch 24 represents the state of the lock body. The combined information is fed back to the controller in real time through the connector copper sheet 32. The controller determines the state of the lock body based on the combined information and controls the self-priming lock.

[0091] The present invention adopts a deceleration scheme of worm-helical gear and spur gear-helical nut 8, which has a large reduction ratio and a simple structure; a small power motor 1 can be selected for the same output force requirement, reducing the volume, weight and cost of the motor 1.

[0092] At the same time, the pushing pin 22 on the locking lever 23 and the thrust nut 8 are in rolling point contact. Specifically, when the thrust nut 8 outputs thrust, the cylindrical surface features of the thrust nut 8 contact the cylindrical surface features of the pushing pin 22 on the locking lever 23, and the locking lever 23 rotates around its own axis. The contact point between the two is rolling point contact.

[0093] This double-cylindrical staggered structure design of rolling point contact can reduce contact noise, reduce friction, and make transmission smoother and more stable.

[0094] In addition, an emergency unlocking mechanism is provided on the housing assembly for realizing reset and unlocking linkage in an emergency situation; the emergency unlocking mechanism includes an emergency reset lever 28 and an emergency unlocking lever 27; the emergency reset lever 28 and the emergency unlocking lever 27 respectively control the corresponding locking lever 23 and unlocking lever 19, thereby realizing the corresponding unlocking operation.

[0095] In an emergency, the emergency reset lever 28 can be toggled to push the locking lever 23 to rotate and disengage from the lock hook 16, thereby achieving a mechanical reset function.

[0096] At the same time, the emergency reset lever 28 is continuously turned, causing it to continue rotating and contacting the emergency unlocking lever 27 and exerting force; the emergency unlocking lever 27 rotates and pushes the unlocking lever 19 to rotate, and the unlocking lever 19 pushes the pawl 14 to move, thereby disengaging the pawl 14 from the lock hook 16 and achieving unlocking, thereby ensuring the safety of the passengers in the car; Figure 2 .

[0097] The connector copper sheet 32 ​​is injection molded into the actuator housing 31, and the connector 39 and the actuator housing 31 are injection molded as one piece, which reduces the number of parts and reduces the product cost; Figure 4 .

[0098] The lock housing 35 of the present invention is embedded with soft rubber 34. When locked, the soft rubber contacts the lock buckle to cushion the impact of the lock buckle, thereby protecting the housing and reducing noise.

[0099] The present invention can achieve the following benefits:

[0100] The present invention uses a motor 1 and a set of transmission mechanisms to realize the electric unlocking and electric locking of the self-priming lock, achieving the goals of fewer parts, small size, light weight, simple structure and low cost.

[0101] The present invention adopts a worm-helical gear, spur gear-helical nut 8 reduction scheme, which has a large reduction ratio and a simple structure; a small power motor 1 can be selected for the same output force requirement, reducing the volume, weight and cost of the motor 1.

[0102] The push pin 22 on the locking lever 23 and the thrust nut 8 form rolling point contact. Specifically, when the thrust nut 8 delivers thrust, the cylindrical surface of the nut 8 contacts the cylindrical surface of the push pin 22 on the locking lever 23. The locking lever 23 rotates around its axis, and the contact point between the two is rolling point contact. This staggered structure of two cylindrical surfaces with rolling point contact reduces contact noise, friction, and provides smoother and more stable transmission.

[0103] At the same time, an emergency unlocking mechanism is provided on the housing assembly for realizing reset and unlocking linkage in an emergency; the emergency unlocking mechanism includes an emergency reset lever 28 and an emergency unlocking lever 27; the emergency reset lever 28 and the emergency unlocking lever 27 respectively control the corresponding locking lever 23 and the unlocking lever 19, thereby disengaging the pawl 14 from the lock hook 16 to achieve unlocking, thereby ensuring the safety of the passengers in the car.

[0104] The lock housing 35 of the present invention is embedded with a soft rubber 34. When locked, the soft rubber contacts the lock buckle to cushion the impact of the lock buckle, which not only protects the housing but also reduces noise. Figure 2 .

[0105] Attachment Figure 6-9 shown.

[0106] The electric locking process of the self-priming lock disclosed in the present invention is as follows: when the self-priming lock reaches the semi-locked state, the system detects the switch signal, the ECU sends a locking signal, the motor 1 starts to work, the transmission mechanism transmits power to the nut 8, and the nut 8 moves along the axial direction of the driving screw 9. As shown in the accompanying drawings, it moves along the positive direction of the X axis. The nut push column 82 pushes the pin 22 to start the movement of the locking link 2-2. Here, the four-bar linkage is the above-mentioned locking link 2-2; in the locking link 2- A latching slot 201 is provided near one end of the lock hook 16, and a lock hook flange 16.1 is provided on the lock hook 16. During use, the latching slot 201 abuts against the lock hook flange 16.1, pushing the lock hook 16 to rotate clockwise to the fully locked position. The pawl 14 is provided with a locking flange 14.1, and the lock hook 16 is provided with a locking groove 16.2. The locking flange 14.1 on the pawl 14 abuts against the locking groove 16.2, causing the lock hook 16 to reach a stable state, and the electric locking process is completed.

[0107] The electric unlocking process is as follows: the ECU sends an unlocking signal, the motor 1 starts working, the transmission mechanism transmits power to the thrust nut 8, the thrust nut 8 moves along the negative direction of the X-axis, pushing the unlocking lever 19 to rotate clockwise, and the unlocking lever 19 pushes the pawl 14 to rotate counterclockwise, so that the locking flange 14.1 and the locking groove 16.2 disengage, and the lock hook 16 opens under the action of the torsion spring.

[0108] When the nut 8 is in the initial position, the emergency unlocking process is as follows: the finger pad 28.1 on the emergency reset lever 28 is manually pulled, and the emergency reset lever 28 rotates around the emergency reset lever pin hole 28.2. The emergency reset lever 28 presses on the pin shaft of the emergency unlocking lever 27, causing the emergency unlocking lever 27 to rotate around the emergency unlocking lever pin hole 27.2. The emergency unlocking lever push head 27.3 pushes the pawl 14 to rotate to achieve emergency unlocking.

[0109] During an emergency power outage, the emergency unlocking process is as follows: Manually actuating the finger pad 28.1 on the emergency reset lever 28 causes the lever 28 to rotate about its pin hole 28.2. The lever pusher 28.3 pushes the locking link 2-2, disengaging the latching slot 201 from the hook flange 16.1, achieving an emergency reset. Simultaneously, the emergency reset lever 28 presses against the emergency unlock lever pin, causing the emergency unlock lever 27 to rotate about its pin hole 27.2. The lever pusher 27.3 then pushes the pawl 14 to rotate, achieving emergency unlocking.

[0110] In particular, emergency reset and emergency unlocking can be accomplished simultaneously by simply pulling the emergency reset lever 28; the operation is simple, and misoperation caused by a complicated operation process can be avoided.

[0111] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A self-priming mechanism for a self-priming lock, characterized in that: A drive unit and a control unit; the drive unit includes a thrust nut; the thrust nut includes a nut body, and a nut push column is provided on the nut body; The control unit includes a locking connecting rod; the locking connecting rod includes a locking lever; a pushing pin is provided on the locking lever; the nut pushing pin is used in conjunction with the pushing pin.

2. A self-priming mechanism for a self-priming lock according to claim 1, characterized in that: The nut push column and the push column pin are arranged to intersect.

3. A self-priming lock, characterized in that: It includes a shell assembly and a lock body assembly; the lock body assembly includes the self-priming mechanism, drive assembly and lock body assembly as described in claims 1-2; The drive assembly is connected to the lock body assembly via a self-priming mechanism; The lock body assembly includes a lock hook and a pawl arranged in the housing assembly; the pawl is used in conjunction with the lock hook; The self-priming mechanism further includes an unlocking lever; the unlocking lever is used in conjunction with a pawl; The locking hook is used in conjunction with the locking connecting rod in the self-priming mechanism; The thrust nut in the driving unit can drive the pawl to rotate by controlling the unlocking lever; The thrust nut in the driving unit can drive the lock hook to rotate by controlling the locking connecting rod.

4. A self-priming lock according to claim 3, characterized in that: The self-priming lock also includes an emergency unlocking mechanism; The emergency unlocking mechanism includes an emergency reset lever and an emergency unlocking lever; The emergency reset lever is connected to the housing assembly via a rotating portion, and the emergency reset lever extends into the housing assembly and cooperates with the locking link; The emergency unlocking lever is connected to the housing assembly via a rotating portion; the emergency unlocking lever extends into the housing assembly and cooperates with the unlocking lever.

5. A self-priming lock according to claim 4, characterized in that: The emergency reset lever and the emergency unlock lever are connected via a linkage portion; the linkage portion includes a linkage rod provided on the emergency unlock lever; the emergency reset lever and the emergency unlock lever are arranged to intersect; The emergency reset lever is pressed onto the linkage rod.

6. A self-priming lock according to claim 3, characterized in that: The housing assembly includes a transverse housing and a longitudinal housing; the transverse housing and the longitudinal housing are arranged to intersect; The transverse housing includes a lock body shell, wherein the lock body shell is provided with a bottom plate and a lock body shell disposed on the bottom plate; The longitudinal housing includes an actuator housing and an actuator upper cover; The drive assembly is arranged in the longitudinal housing; The lock body assembly is arranged in the transverse housing; The drive assembly includes a drive motor, and the drive motor is connected to the thrust nut through a transmission mechanism; The transmission mechanism includes a driving screw rod; the thrust nut is sleeved on the driving screw rod.

7. A self-priming lock according to claim 6, characterized in that: The transmission mechanism includes a primary worm connected to the motor, a first transmission component and a second transmission component; the first transmission component includes a primary large gear and a primary small gear; the second transmission component includes a secondary gear and a driving screw; The driving screw rod is provided with a driving unit.

8. A self-priming lock according to claim 7, characterized in that: The first transmission component and the second transmission component are stacked.

9. The self-priming lock according to claim 7, characterized in that: The first transmission component is a double gear; the secondary gear and the driving screw are an integrated structure; the secondary gear and the driving screw are connected by injection molding; the first large gear is a helical gear; and the secondary gear is a spur gear.

10. A self-priming lock according to any one of claims 7 to 9, characterized in that: The first-stage large gear, the first-stage small gear, the second-stage gear and the thrust nut in the first transmission component are made of plastic material; the driving screw and the pushing pin are made of metal material.

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