A hidden automobile door handle actuator

Abstract

The utility model relates to a hidden automobile door handle actuator, the actuator comprises an upper shell, a lower shell, a push rod assembly and a driving motor assembly, the lower shell comprises a circular push rod through hole; the push rod assembly comprises a nut gear, two copper sleeves, a push rod, a mandrel, a push rod retaining spring and a screw rod, the nut gear comprises an intermediate gear part, a circular body at both ends and an internal thread, the two copper sleeves are sleeved on the circular body at both ends; the screw rod is screwed to the internal thread, and the internal thread is used to move the screw rod; one side of the mandrel is in the screw rod, and the other side of the mandrel is inserted into the push rod, the mandrel is provided with a keyway, the push rod is provided with a retaining spring notch at the position corresponding to the keyway, the push rod retaining spring is clamped and connected to the keyway, and the ring body of the push rod retaining spring is located in the retaining spring notch. The laser welding of the upper shell and the lower shell of the actuator of the present application is complete and uninterrupted, which ensures the sealing requirements of the product.

Description

Technical Field

[0001] The utility model relates to an automobile device, in particular to an actuator used for a hidden automobile door handle. Background Art

[0002] With the development of automobile electric technology, hidden automobile door handles are more and more widely used, so actuators that provide operating power for door handles have emerged. The actuator is installed in the door handle assembly, and its composition includes a housing and a transmission mechanism arranged in the housing. The transmission mechanism includes a motor, a worm, a gear and other transmission parts. The actuator pushes the automobile door handle from the hidden state to the required extended state or retracts it to the hidden state according to the instructions of the on-board computer controller.

[0003] The door handle actuators of the prior art, such as those disclosed in announcement numbers CN217538262U, CN213838132U and CN219711260U, are plastic parts connected by laser welding, which are compact, firm and reliable. However, for reciprocating actuators, there are interruptions in the laser welding between the push rod and the electrical socket, and there is always a gap between the welding end point and the sealing ring, which makes the sealing problem extremely difficult to solve. There are cases in the market where the actuator fails due to water ingress; there is also an actuator that integrates the socket and the lower shell, and the pin is pre-placed in the lower shell as an insert during the shell injection molding, eliminating the sealing ring here. Although the sealing problem here is solved, it also produces the disadvantages of increased difficulty in the injection molding process and reduced production efficiency. Therefore, there is still room for improvement in the automobile door handle actuators of the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide an actuator with a new structure, which can effectively solve the sealing problem of the actuator and will not increase the difficulty of the processing technology of parts, so as to solve the existing technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hidden automobile door handle actuator, the actuator comprising an upper shell, a lower shell, a push rod assembly and a drive motor assembly, the upper shell is arranged on the lower shell to form an accommodating space, the push rod assembly and the drive motor assembly are arranged in the accommodating space; the lower shell comprises a circular push rod through hole with a slot seat; the push rod assembly comprises a nut gear, two copper sleeves, a push rod, a core shaft, a push rod retaining spring and a screw rod, wherein the connection relationship is as follows: the nut gear is a hollow cylinder comprising an intermediate gear portion and circular body portions at both ends, and the interior of the hollow cylinder of the nut gear comprises an internal thread, the two copper sleeves are sleeved on the circular body portions at both ends for The nut gear rotates in the two copper sleeves; the interior of one side of the push rod is a hollow groove; the screw rod is a hollow screw rod body including an anti-rotation block, the screw rod is threaded with the internal thread, and the internal thread is used to move the screw rod; the core shaft is an elongated shaft body, one side of the core shaft is arranged in the hollow interior of the screw rod, and the other side of the core shaft is inserted into the hollow groove connected to the push rod, a key groove is provided on the outer surface of the core shaft, and a retaining ring notch is provided on the push rod corresponding to the position of the key groove, the inner edge surface of the push rod retaining ring is clamped and connected to the key groove, and the outer side of the ring body of the push rod retaining ring is located in the retaining ring notch.

[0007] The hidden automobile door handle actuator described in the preferred embodiment of the present application, the push rod assembly also includes a push rod sealing ring, the push rod sealing ring is arranged in the groove seat, and the push rod passes through and connects the push rod sealing ring and the push rod through hole.

[0008] The hidden car door handle actuator described in the preferred embodiment of the present application, the push rod assembly also includes a sealing retaining ring, the sealing retaining ring is a dumbbell-shaped hollow body, the sealing retaining ring is sleeved and connected to the push rod, and one end face of the sealing retaining ring is abutted against the push rod sealing ring.

[0009] The hidden automobile door handle actuator described in the preferred embodiment of the present application is characterized in that the lower shell is provided with five accommodating grooves corresponding to the push rod assembly, and the sealing retaining ring, copper sleeve, nut gear, and push rod are sequentially arranged in the five accommodating grooves; the bottom surface of the anti-rotation block facing the lower shell is in an inverted convex shape, and the lower shell is provided with a plurality of steps corresponding to the inverted convex shape of the anti-rotation block, and the anti-rotation block is arranged on the plurality of steps.

[0010] The hidden car door handle actuator described in the preferred embodiment of the present application, the driving motor assembly includes an oil-containing bearing, a worm, a motor, a magnetic ring and a power socket assembly, wherein the connection relationship is: the worm is arranged at the output shaft head end of the motor, the magnetic ring is arranged at the output shaft tail end of the motor, the oil-containing bearing is arranged at the end of the output shaft head end of the motor; the power socket assembly is electrically connected to the motor.

[0011] The hidden automobile door handle actuator described in the preferred embodiment of the present application, the power socket assembly includes a circuit board, a socket retaining spring, a socket, a socket sealing ring, a plurality of pins and a circuit board seat, the circuit board seat is arranged in the lower shell, and the circuit board is arranged on the circuit board seat; the socket is a cup-shaped body including a cup body and a cup bottom, the outer surface of the cup body includes a sealing groove, the socket sealing ring is arranged in the sealing groove, the cup bottom is provided with a plurality of pinholes, one end of the plurality of pins is arranged on the circuit board, and the other end of the plurality of pins penetrates and connects the plurality of pinholes; the outer surface of the cup bottom includes two connecting holes; the lower shell is provided with a hollow cylindrical socket hole corresponding to the socket, the socket hole includes a hole wall and a hole bottom wall, the hole bottom wall is an annular sheet extending toward the center from the end of the hole wall, the hole bottom wall is used to limit the socket, the hole bottom wall is provided with two notches, the two pins of the socket retaining spring penetrate the two notches and are inserted into and connected to the two connecting holes for fixing the socket; the circuit board includes a Hall element for sensing the magnetic ring.

[0012] The hidden car door handle actuator described in the preferred embodiment of the present application, the power socket assembly also includes a baffle for protecting the end top of the motor's shaft end, the lower shell has five accommodating grooves corresponding to the drive motor assembly, and the baffle, oil-containing bearing, worm, motor, and magnetic ring are arranged in the five accommodating grooves in sequence.

[0013] The hidden car door handle actuator described in the preferred embodiment of the present application further includes a transition gear and a gear shaft, wherein the gear shaft is arranged on the lower shell, the transition gear is arranged on the gear shaft, and the transition gear is meshedly connected to the nut gear and the worm.

[0014] The design concept of the present application is to provide a method in which the push rod sealing ring and the socket sealing ring are all placed in the lower shell, so that the upper shell and the lower shell can be welded continuously without interruption, thereby fundamentally eliminating the weld and solving the sealing problem; in addition, an independent socket is retained, and the injection molding process of the embedded insert is avoided through a reasonable socket sealing ring design and circuit board positioning design.

[0015] Due to the adoption of the above technical solution, the utility model has the following advantages and effects:

[0016] First, the socket sealing structure and the push rod sealing structure of the present application make the laser welding of the upper shell and the lower shell of the actuator complete and uninterrupted, ensuring the sealing requirements of the product while also taking into account the simplicity of the processing and assembly processes. Of course, implementing any specific embodiment of the present application does not necessarily have all of the above technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the appearance of the actuator for this application;

[0018] Figure 2 This is a schematic diagram of the explosion of the actuator for this application;

[0019] Figure 3 This is a schematic diagram of the internal structure of the actuator push rod in the retracted state of this application;

[0020] Figure 4 This is a schematic diagram of the internal structure of the actuator push rod in the push-out state of this application;

[0021] Figure 5 A cross-sectional schematic diagram of the push rod assembly of the present application;

[0022] Figure 6 An exploded schematic diagram of the push rod assembly of this application;

[0023] Figure 7 This is a schematic middle cross-sectional view of the push rod assembly and the drive motor assembly of the present application;

[0024] Figure 8 An exploded schematic diagram of the drive motor assembly of this application;

[0025] Fig. 9 This is a schematic diagram of the connection between the lower housing, transition gear, gear shaft, and baffle of this application;

[0026] Fig.10 Schematic diagram of the socket clip and socket for this application; Fig.11 This is a schematic cross-sectional view of the socket of this application. DETAILED DESCRIPTION

[0027] For ease of understanding, preferred embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figure 1 and Figure 2 The appearance schematic diagram and explosion schematic diagram of the actuator of the present application. The actuator of the present application is applied to hidden car door handles, which effectively solves the sealing problem of the actuator without increasing the difficulty of the processing technology of the parts. In the prior art, the push rod sealing ring and the socket sealing ring are placed in the middle of the upper shell and the lower shell, so that there will be discontinuity when the upper shell and the lower shell are welded, resulting in leakage between the welding end point and the sealing ring. In the present application, the push rod sealing ring and the socket sealing ring are all placed in the lower shell, so that the upper shell and the lower shell can be welded continuously without discontinuity, thereby fundamentally eliminating the weld and solving the sealing problem; in addition, an independent socket is retained, and the injection molding process of the embedded insert is avoided through a reasonable socket sealing ring design and circuit board positioning design; at the same time, the push rod is designed to be segmented, and is inserted into the core shaft from the push rod through hole of the lower shell from the outside to the inside during assembly, and the processing technology is simple.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the actuator described in the present application includes an upper shell 1, a lower shell 10, a push rod assembly and a drive motor assembly. The upper shell 1 is arranged on the lower shell 10 to form an accommodating space. Since the push rod sealing ring and the socket sealing ring are all placed in the lower shell 10, the connecting surfaces of the upper shell 1 and the lower shell 10 are continuous without interruption, and the welding of the two is continuous without welds, which solves the sealing problem; the push rod assembly and the drive motor assembly are arranged in the accommodating space. Because the upper shell 1 and the lower shell 10 solve the sealing problem, the push rod assembly and the drive motor assembly do not have the problem of failure caused by water ingress.

[0030] Please refer to Figure 2 , Figure 3 and Figure 5 The lower shell 10 includes a circular push rod through hole 1001 with a groove seat 1002. The present application designs the push rod through hole 1001 into a complete circle rather than a circle composed of upper and lower parts. This can avoid accidental damage to the push rod sealing ring during welding and will not produce a weld, resulting in a better sealing effect; please also refer to Figure 6 An exploded schematic diagram of the push rod assembly of the present application, wherein the push rod assembly includes a nut gear 2, two copper sleeves 3, a push rod 4, a core shaft 6, a push rod retaining spring 7 and a screw 9, wherein the connection relationship is as follows: the nut gear 2 is a hollow cylinder including an intermediate gear portion 201 and circular body portions 202 at both ends, and the interior of the hollow cylinder of the nut gear 2 includes an internal thread 203, the two copper sleeves 3 are sleeved on the circular body portions 202 at both ends for the nut gear 2 to rotate in the two copper sleeves 3, and after assembly, the two copper sleeves 3 are separately fixed on the lower shell 10, and the circular body portions 202 at both ends of the nut gear 2 are rotatably inserted in the two copper sleeves 3, and the nut gear 2 can rotate smoothly when the intermediate gear portion 201 is subjected to force.

[0031] like Figure 5 As shown, the interior of one side of the push rod 4 is a hollow groove. Figure 5In the figure, the push rod 4 is facing the side of the screw rod 9. The push rod 4 is used as an element for outputting motion and is driven by the motor power to reciprocate, thereby realizing the actuator function; the screw rod 9 is a hollow screw rod body including an anti-rotation block 901. The purpose of the anti-rotation block 901 is to prevent the screw rod 9 from rotating and thus allowing it to move during operation. In the embodiment of the present application, the anti-rotation block 901 is located at the end of the screw rod 9, but it cannot be used to limit the present application. The screw rod 9 is screwed to the internal thread 203, and the internal thread 203 is used to move the screw rod 9. When the nut gear 2 is rotated by force to drive the internal thread 203 to rotate, due to the existence of the anti-rotation block 901, the screw rod 9 does not rotate but only moves back and forth; the mandrel 6 is an elongated shaft, one side of the mandrel 6 is arranged in the hollow interior of the screw rod 9, and the other side of the mandrel 6 is inserted into the hollow groove connected to the push rod 4; the mandrel 6 and the screw rod 9 are fixedly connected Next, the core shaft 6 and the screw rod 9 in the embodiment of the present application belong to a shot package connection, but it cannot be used to limit the present application; a key groove 601 is provided on the outer surface of the core shaft 6, and a retaining ring notch 401 is provided on the push rod 4 corresponding to the position of the key groove 601, the inner edge surface of the push rod retaining ring 7 is clamped and connected to the key groove 601, and the outer side of the ring body of the push rod retaining ring 7 is located in the retaining ring notch 401, and when assembling, the push rod retaining ring 7 is clamped and connected to the key groove 601 after passing through the retaining ring notch 401, and the function of the push rod retaining ring 7 is to connect the core shaft 6 and the push rod 4 into one, and move forward and backward together. Because the push rod through hole 1001 is designed as a full circle on the lower shell 10 in the present application, it is not easy to assemble the long push rod into it. Therefore, the design of the push rod 4 and the core shaft 6, when assembling, only the push rod 4 needs to be combined with the core shaft 6 through the push rod through hole 1001 from the outside to the inside, which is easy to operate and saves work time.

[0032] In terms of ensuring the sealing performance of the push rod 4, Figure 5 and Figure 6 In the present application, the push rod assembly also includes a push rod sealing ring 8, which is arranged in the groove seat 1002. The push rod 4 penetrates and connects the push rod sealing ring 8 and the push rod through hole 1001. The push rod sealing ring 8 functions to seal. The push rod 4 squeezes the push rod sealing ring 8 so that the outer edge of the push rod sealing ring 8 fits the groove seat 1002, and the inner edge of the push rod sealing ring 8 fits the push rod 4, ensuring that moisture does not enter from the push rod through hole 1001.

[0033] Please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9In order to fix the push rod sealing ring 8 in the groove seat 1002, the push rod assembly of the present application further includes a sealing ring 5, which is a dumbbell-shaped hollow body. The sealing ring 5 is sleeved and connected to the push rod 4, and one end face of the sealing ring 5 is abutted against the push rod sealing ring 8. In addition, the lower shell 10 is provided with five receiving grooves corresponding to the push rod assembly, and the sealing ring 5, the copper sleeve 3, the nut gear 2, the copper sleeve 3, and the screw 9 are sequentially arranged in the five receiving grooves, as shown in FIG. Figure 4 As shown, it is a sequence from top to bottom, one end face of the sealing ring 5 abuts against the push rod sealing ring 8, and the other end face of the sealing ring 5 abuts against the segmented ring connected to the accommodating groove. After assembly, the sealing ring 5 firmly abuts against the push rod sealing ring 8 to ensure the sealing performance of the push rod sealing ring 8; the bottom surface of the anti-rotation block 901 facing the lower shell 10 is an inverted convex shape, and the lower shell 10 is provided with a plurality of steps corresponding to the inverted convex shape of the anti-rotation block 901, and the anti-rotation block 901 is arranged on the plurality of steps, as shown in FIG. Figure 7 As shown, the bottom surface of the receiving groove where the screw rod 9 is located includes three steps, which are an upper step 1004, a middle step 1005 and a bottom step 1006 from top to bottom. The inverted convex side surface of the anti-rotation block 901 is respectively connected to the vertical surface of the upper step 1004, the horizontal surface of the middle step 1005 and the vertical surface of the bottom step 1006 from top to bottom. After assembly, the anti-rotation block 901 is limited in the three steps of the receiving groove and moves stably without flipping, that is, the screw rod 9 moves stably in the receiving groove.

[0034] Please refer to Figure 8An exploded schematic diagram of the drive motor assembly of the present application, the drive motor assembly includes an oil-containing bearing 14, a worm 15, a motor 16, a magnetic ring 22 and a power socket assembly, wherein the connection relationship is as follows: the worm 15 is arranged at the head end of the output shaft of the motor 16, the worm 15 and the output shaft of the motor 16 are fixedly connected, the worm 15 rotates synchronously with the output shaft of the motor 16, the magnetic ring 22 is arranged at the tail end of the output shaft of the motor 16, the magnetic ring 22 is used to output information indicating the position of the push rod 4, specifically, the magnetic ring 22 provides a magnetic field, the rotation of the motor 16 drives the magnetic ring 22 to rotate, and the Hall element senses the magnetic field The product will start to enter the self-learning state, from the mechanical lower dead point of the push rod 4 to the mechanical upper dead point, the Hall element will record the total number of circles of this displacement, and the subsequent push distance of the push rod 4 will be judged by the specific number of Hall element circles. The oil-containing bearing 14 is arranged at the end of the output shaft head end of the motor 16, and the oil-containing bearing 14 is used to support the output shaft position of the motor 16 and provide the output shaft of the motor 16 with a place for smooth rotation; the power socket assembly is electrically connected to the motor 16, and the power socket assembly executes the rotation command sent by the controller, and also feeds back the position information of the push rod 4 to the controller.

[0035] Please refer to Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11The power socket assembly includes a circuit board 17, a socket retaining spring 18, a socket 19, a socket sealing ring 20, a plurality of pins 23 and a circuit board seat 21, wherein the connection relationship is as follows: the circuit board seat 21 is arranged in the lower shell 10, the circuit board 17 is arranged on the circuit board seat 21, and the reasonable positioning design of the circuit board 17 avoids the problem that the circuit board 17 is not easy to fix and the pins are out of position; the socket 19 is an independent injection molded part including a cup body 1901 and a cup bottom 1902, the outer surface of the cup body 1901 includes a sealing groove, the socket sealing ring 20 is arranged in the sealing groove, and the cup bottom 1902 has a plurality of pinholes. One end of the plurality of pins 23 is arranged on the circuit board 17, and the other end of the plurality of pins 23 penetrates and connects to the plurality of pinholes located in the socket 19; the outer surface of the cup bottom 1902 includes two connecting holes 1903; the lower shell 10 opens a hollow cylindrical socket hole 1003 corresponding to the socket 19, and the socket hole 1003 includes a hole wall 10031 and a hole bottom wall 10032, and the hole bottom wall 10032 is an annular piece extending toward the center from the end of the hole wall 10031, and the hole bottom wall 10032 is used to limit the socket 19, and the hole bottom wall 10032 opens two notches, and the two notches further extend to a part of the hole wall 1 0031, the two pins of the socket retaining spring 18 pass through the two notches and are inserted into the two connecting holes 1903 to fix the socket 19; during assembly, one end of the cup bottom 1902 of the socket 19 is inserted into the socket hole 1003, and at the same time, the multiple pins 23 are inserted into the multiple pinholes opened in the cup bottom 1902, and the pinholes and the pins are interference fit. When in place, the end face of the cup bottom 1902 abuts against the hole bottom wall 10032, and the socket 19 cannot move forward. At this time, the two notches opened in the hole bottom wall 10032 are located above the two connecting holes 1903, and the two pins of the socket retaining spring 18 are inserted into the connecting hole 1003 after passing through the two notches. The socket retaining spring 18 is connected to the two connecting holes 1903, and the socket hole 1003 and the socket 19 are fixedly connected. The socket 19 will not fall out of the socket hole 1003. This design not only ensures the sealing requirement of this part, but also avoids the injection molding process of pre-embedded pins. The circuit board 17 includes a Hall element (not shown) for sensing the magnetic ring 22. The magnetic ring 22 is facing the Hall element built into the circuit board 17. When the motor 16 rotates, the Hall element generates a Hall signal. The on-board computer controller collects and calibrates the signal so that the signal corresponds to the position of the push rod 4 one by one. The on-board computer controller controls the movement of the actuator described in this application accordingly.

[0036] Please refer to Fig. 9The schematic diagram of the connection of the lower shell, transition gear, gear shaft, and baffle of the present application, the power socket assembly also includes a baffle 13 for protecting the end top of the shaft head end of the motor 16, the lower shell 10 is provided with five accommodating grooves corresponding to the drive motor assembly, the baffle 13, oil-containing bearing 14, worm 15, motor 16, and magnetic ring 22 are sequentially arranged in the five accommodating grooves, the arrangement of the baffle 13 can protect the end top of the shaft head end of the motor 16 from colliding with or piercing the lower shell 10, and can also limit the axial movement of the motor shaft, prevent the magnetic ring from directly contacting the motor, reduce the movement of the worm, and reduce noise. In addition, the actuator also includes a transition gear 11 and a gear shaft 12, the gear shaft 12 is arranged on the lower shell 10, the transition gear 11 is arranged on the gear shaft 12, the transition gear 11 is meshed and connected with the nut gear 2 and the worm 15, and the transition gear 11 is used to synchronously transmit the rotation of the worm 15 to the nut gear 2.

[0037] The specific operation of this application executor is as follows: Please refer to Figure 3 and Figure 4They are respectively the states of push rod retraction and extension. When the motor 16 is working, the worm 15 installed on the output shaft of the motor 16 drives the transition gear 11 to rotate; the transition gear 11 is a double gear, integrating a primary helical gear and a secondary worm; when the transition gear 11 rotates, the upper secondary worm drives the nut gear 2 to rotate. The outside of the nut gear 2 is a secondary helical gear, and the inner hole is a nut. When the nut gear 2 rotates, the screw rod 9 is driven to move outward or inward. The two ends of the nut gear 2 are positioned by two copper sleeves 3, and the copper sleeve 3 is installed in the groove of the accommodating groove of the lower shell 10. The tail of the screw rod 9 is the anti-rotation block 901 of square structure to prevent the screw rod 9 from rotating. A core shaft 6 is embedded in the screw rod 9, and the core shaft 6 is provided with the keyway 601. The push rod 4 is connected to the screw rod 9 through the core shaft 6, and the push rod retaining spring 7 is inserted into the keyway 601 to complete the connection. When the screw rod 9 moves, it drives the push rod 4 to move. In order to limit the vibration of the output shaft of the motor 16, an oil-containing bearing 14 is installed at the front end of the output shaft; in addition, in order to limit the axial stringing of the output shaft of the motor 16 and protect the worm 15 installed on the output shaft of the motor 16, the baffle 13 is installed on the lower shell 10. In addition, in order to ensure the accurate position of the transition gear 11 during operation, a gear shaft 12 is installed on the lower shell 10, and the transition gear 11 is installed on this shaft. The magnetic ring 22 is installed on the output shaft at the tail of the motor 16. The magnetic ring 22 is directly facing the Hall element built into the circuit board 17. When the motor 16 rotates, the Hall element generates a Hall signal. The driving computer controller collects and calibrates the signal so that the signal corresponds to the position of the push rod 4. The driving computer controller instructs the motor 16 to rotate forward or reverse accordingly, thereby controlling the actuator's push rod 4 to push out or retract.

[0038] It should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0039] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0041] Due to the adoption of the above technical solution, the utility model has the following advantages and effects:

[0042] First, the socket sealing structure and the push rod sealing structure of the present application enable the laser welding of the upper shell and the lower shell of the actuator to be complete and uninterrupted, thereby ensuring the sealing requirements of the product while also taking into account the simplicity of the processing and assembly processes.

[0043] Of course, any specific embodiment of the present invention does not necessarily have all the above technical effects at the same time. The above disclosure is only a preferred embodiment of the present invention, but it is not intended to limit itself. Any equivalent changes and modifications made by any technician familiar with the field without violating the spirit and connotation of the present invention should fall within the scope of protection of the present invention.

Claims

1. A hidden automobile door handle actuator, characterized in that: The actuator comprises an upper shell, a lower shell, a push rod assembly and a drive motor assembly, wherein the upper shell is arranged on the lower shell to form an accommodating space, and the push rod assembly and the drive motor assembly are arranged in the accommodating space; the lower shell comprises a circular push rod through hole with a groove seat; The push rod assembly includes a nut gear, two copper sleeves, a push rod, a core shaft, a push rod retaining spring and a screw rod, wherein the connection relationship is as follows: The nut gear is a hollow cylinder including an intermediate gear portion and two circular body portions at both ends, and the interior of the hollow cylinder of the nut gear includes an internal thread, and the two copper sleeves are sleeved on the two circular body portions at both ends for the nut gear to rotate in the two copper sleeves; The interior of one side of the push rod is a hollow groove; The screw rod is a hollow screw rod body including an anti-rotation block, the screw rod is threadedly connected to the internal thread, and the internal thread is used to move the screw rod; the core shaft is an elongated shaft body, one side of the core shaft is arranged in the hollow interior of the screw rod, and the other side of the core shaft is inserted into the hollow groove connected to the push rod, a key groove is provided on the outer surface of the core shaft, and a retaining ring notch is provided on the push rod corresponding to the position of the key groove, the inner edge surface of the push rod retaining ring is clamped and connected to the key groove, and the outer side of the ring body of the push rod retaining ring is located in the retaining ring notch.

2. The hidden automobile door handle actuator according to claim 1, characterized in that: The push rod assembly also includes a push rod sealing ring, which is arranged in the groove seat, and the push rod passes through and connects the push rod sealing ring and the push rod through hole.

3. The hidden automobile door handle actuator according to claim 2, characterized in that: The push rod assembly also includes a sealing retaining ring, which is a dumbbell-shaped hollow body. The sealing retaining ring is sleeved and connected to the push rod, and one end surface of the sealing retaining ring is abutted against and connected to the push rod sealing ring.

4. The hidden automobile door handle actuator according to claim 3, characterized in that: The lower shell is provided with five receiving grooves corresponding to the push rod assembly, and the sealing ring, copper sleeve, nut gear, and push rod are sequentially arranged in the five receiving grooves; the bottom surface of the anti-rotation block facing the lower shell is in an inverted convex shape, and the lower shell is provided with a plurality of steps corresponding to the inverted convex shape of the anti-rotation block, and the anti-rotation block is arranged on the plurality of steps.

5. The hidden automobile door handle actuator according to claim 1, characterized in that: The driving motor assembly includes an oil-containing bearing, a worm, a motor, a magnetic ring and a power socket assembly, wherein the connection relationship is as follows: the worm is arranged at the output shaft head end of the motor, the magnetic ring is arranged at the output shaft tail end of the motor, and the oil-containing bearing is arranged at the end of the output shaft head end of the motor; the power socket assembly is electrically connected to the motor.

6. The hidden automobile door handle actuator according to claim 5, characterized in that: The power socket assembly includes a circuit board, a socket retaining spring, a socket, a socket sealing ring, a plurality of pins and a circuit board seat, wherein the circuit board seat is arranged in the lower shell, and the circuit board is arranged on the circuit board seat; the socket is a cup-shaped body including a cup body and a cup bottom, the outer surface of the cup body includes a sealing groove, the socket sealing ring is arranged in the sealing groove, a plurality of pinholes are provided in the cup bottom, one end of the plurality of pins is provided on the circuit board, and the other end of the plurality of pins penetrates and connects the plurality of pinholes; the outer surface of the cup bottom includes two connecting holes; the lower shell opens a hollow cylindrical socket hole corresponding to the socket, the socket hole includes a hole wall and a hole bottom wall, the hole bottom wall is an annular piece extending toward the center from the end of the hole wall, the hole bottom wall is used to limit the socket, the hole bottom wall is opened with two notches, the two pins of the socket retaining spring penetrate the two notches and are inserted into and connected to the two connecting holes for fixing the socket; the circuit board includes a Hall element for sensing the magnetic ring.

7. The hidden automobile door handle actuator according to claim 6, characterized in that: The power socket assembly also includes a baffle for protecting the end top of the motor's shaft end. The lower shell has five accommodating grooves corresponding to the drive motor assembly. The baffle, oil-containing bearing, worm, motor, and magnetic ring are arranged in the five accommodating grooves in sequence.

8. The hidden automobile door handle actuator according to claim 7, characterized in that: The actuator further comprises a transition gear and a gear shaft, wherein the gear shaft is arranged on the lower shell, the transition gear is arranged on the gear shaft, and the transition gear is meshedly connected with the nut gear and the worm.

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