CN220167740U - Electronic actuator - Google Patents

Abstract

The utility model relates to an electronic actuator, which comprises a shell, a first control unit, a second control unit and a third control unit, wherein the shell is provided with an electric connection port and an output port; a drive mechanism for providing power; the output rod is positioned in the storage space and can extend out of the shell through the output port, so that the output rod can do linear reciprocating motion along the axis direction of the output rod and realize power output; a transmission assembly for transmitting power to the output rod to drive movement of the output rod; the automobile control system is also provided with a signal pin electrically connected with the automobile control system, and the output rod is provided with a contact piece which can be contacted with the signal pin; the output rod drives the contact to move in the moving process, so that the contact and the signal pin are in contact and not in contact, and the automobile control system can receive different signals. The utility model has the beneficial effects that: the position of the output rod is reflected through the different positions between the contact piece and the signal pin, so that the automobile control system obtains a position signal of the handle, and the signal is stable and can adapt to various control requirements.

Description

Electronic actuator

Technical Field

The utility model relates to the technical field of automobile actuators, in particular to an electronic actuator and a control mode thereof.

Background

The traditional automobile outer door handle is basically manual, after a user unlocks a door lock signal, the user holds the handle and opens the automobile door under the action of pulling force, the manual handle is connected with the automobile door through a manual elastic mechanical device, so that an operator can pull open the automobile conveniently, the manual handle is exposed out of the surface of the automobile door, dust is easy to adhere, and wind resistance and other problems can be caused in high-speed running.

In order to solve the above problems, some manufacturers have proposed hidden automobile outside handles. The hidden automobile outside handle generally has three states, namely an initial hidden state, a pre-unfolded state and a fully unfolded state. When the automobile outer handle is used, the electronic lock is generally unlocked through a key, at the moment, the driving computer gives an instruction, the automobile outer handle is pushed out from a hidden state to a pre-unfolding state through the actuator, and then a user can hold and pull the automobile outer handle to enable the automobile outer handle to be switched from the pre-unfolding state to a full-unfolding state, and meanwhile the mechanical lock is unlocked and the automobile door is opened.

In the unlocking process of the automobile door handle, a driving computer needs to monitor the state of the door handle at any time, and after the door handle is completely unfolded, the mechanical lock is unlocked and the automobile door is opened. In the prior art, a micro switch is usually arranged on an actuator, and a door handle can trigger the micro switch in a fully unfolded state so as to transmit a door opening signal to a driving computer.

However, the use of the micro-switch only allows the vehicle computer to monitor the instantaneous state of the door handle, but not the state of the door handle in the journey. Moreover, when the micro switch is installed on the handle mechanism, the accurate installation position needs to be ensured, and the situation that the micro switch is triggered in advance or cannot be triggered is avoided, so that a driving computer cannot receive the unfolding signal of the door handle. Thus, a certain difficulty is created in assembly.

Disclosure of Invention

In order to solve the above-mentioned problems occurring in the prior art, the present utility model provides an electronic actuator,

comprising the steps of (a) a step of,

the shell is provided with an electric connection port and an output port, and a storage space is arranged in the shell and communicated with the electric connection port and the output port;

the driving mechanism is positioned in the storage space and is used for providing power;

the output rod is positioned in the storage space and can extend out of the shell through the output port, so that the output rod can do linear reciprocating motion along the axis direction of the output rod and realize power output;

the transmission assembly is arranged in the storage space and positioned between the driving mechanism and the output rod and used for transmitting power to the output rod so as to drive the output rod to move;

the storage space is internally provided with a signal pin electrically connected with an automobile control system, and the output rod is provided with a contact piece which can be contacted with the signal pin;

the output rod drives the contact piece to move in the movement process, so that the contact piece and the signal pin are in contact and not in contact, and accordingly the automobile control system can receive different signals, and the signal pin transmits the position signal of the output rod to the automobile control system.

The technical scheme is further provided as follows: the signal pins are at least provided with one, and when the number of the signal pins is a plurality of signal pins, the length of each signal pin is inconsistent.

The technical scheme is further provided as follows: the two ends of the output rod are respectively a sliding block section and an output section, the ends of the contact piece are wrapped and injected on the sliding block section, and the pins are exposed out of the sliding block section;

the signal pin package is annotated into the casing, and the contact surface exposes in the accommodation space.

The technical scheme is further provided as follows: the storage space is divided into a driving cavity, a transmission cavity and an output cavity which are communicated with each other; the driving cavity is communicated with the power connection port, and the output cavity is communicated with the output port; the transmission assembly is positioned in the transmission cavity;

the power connection port is formed by extending outwards, and the outer end of the signal pin extends into the sheath.

The technical scheme is further provided as follows: the driving mechanism is a motor, a motor contact pin is connected to the motor, and the outer end of the motor contact pin also extends into the sheath.

The technical scheme is further provided as follows: the transmission assembly at least comprises an input worm, a duplex gear and an output nut seat which are in transmission connection with each other from front to back, wherein the input worm is connected with the output end of the driving mechanism, and the output nut seat is sleeved on the output rod; the duplicate gear is respectively meshed and in transmission connection with the input worm and the output nut seat.

The technical scheme is further provided as follows: the output rod is also provided with a screw rod section, and the output nut seat is provided with an internal thread in threaded connection with the screw rod section.

The technical scheme is further provided as follows: the double gear is provided with a bevel gear part meshed with the input worm and a transmission worm part meshed with the output nut seat and integrally arranged with the bevel gear part; and an output helical gear meshed with the transmission worm part is arranged on the outer wall of the output nut seat.

The technical scheme is further provided as follows: the transmission cavity is also obliquely provided with a gear shaft, the duplicate gear is sleeved on the gear shaft, and the central axis of the gear shaft coincides with the central axis of the duplicate gear.

The utility model also provides a control method of the electronic actuator, which comprises the following steps,

s1, an automobile control system receives a first position signal between a signal pin and a contact, so that the state of an output rod is confirmed;

s2, the automobile control system sends an opening signal to the driving mechanism, the motor rotates, and the transmission part drives the output rod to move so as to drive the contact piece to move;

s3, the contact moves along with the output rod to reach a second position, and the automobile control system receives a position signal of the output rod at the moment;

s4, the automobile control system controls the motor to continue to rotate, and the output rod continues to move to drive the contact to reach a third position;

s5, the automobile control system receives the position signal of the output rod at the moment, sends a closing signal to the driving mechanism, and the motor stops; the operation is ended.

Compared with the prior art, the utility model has the beneficial effects that:

1. the position of the output rod is reflected by setting different positions between the contact piece and the signal pin, so that the automobile control system obtains a position signal of the handle, and the signal is stable and can adapt to various control requirements;

2. the transmission mechanism of the actuator adopts the cooperation of the input worm, the duplex gear and the output nut seat, and forms a two-stage worm type transmission structure, thereby realizing the direction changing effect on the output force of the motor, namely, converting the rotation action of the motor into the linear reciprocating action of the output screw rod, and having stable transmission and low noise;

3. the duplex gears and the gear shafts are obliquely arranged and matched with a two-stage worm type transmission mode, so that transmission is smoother, the whole arrangement of the actuator is more compact, and the design purpose of miniaturization is achieved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the internal assembly of the present utility model.

Fig. 3 is a schematic view of the structure of the lower cover.

Fig. 4 is an exploded view of the present utility model.

Fig. 5 is a schematic structural view of the output rod.

Fig. 6 is a schematic structural view of the transmission assembly.

Fig. 7 is a schematic view showing a separation structure of the output lever and the lower cover.

Fig. 8 is a top view of the internal structure of the present utility model.

Fig. 9 is a schematic diagram showing the positions of the contacts and the signal pins when the output lever is in the first position.

Fig. 10 is a schematic view of the positions of the contacts and the signal pins when the output lever is in the second position.

Fig. 11 is a schematic view of the positions of the contacts and the signal pins when the output lever is in the third position.

The drawings are marked: 100. a housing; 102. an electrical connection port; 101. an output port; 110. an upper cover; 120. a lower cover; 103. a drive chamber; 104. a transmission cavity; 105. an output chamber; 130. a sheath; 106. a bearing hole;

200. an output lever; 210. a slider section; 220. a screw section; 230. an output section;

300. a driving mechanism;

400. a transmission assembly;

500. a signal pin; 510. a first pin; 520. a second pin; 530. a third pin;

600. a contact; 610. a first pin; 620. a second pin; 630. a third pin;

700. inputting a worm;

800. a duplex gear; 810. a helical gear portion; 820. a drive worm part;

900. an output nut seat; 910. an internal thread; 920. an output helical gear;

10. a sliding bearing; 20. a gear shaft; 30. a seal ring; 40. a motor contact pin; 50. a metal bushing; 60. and a limiting gasket.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1

As shown in fig. 1-11, the following embodiments provide an electronic actuator.

Comprising the steps of (a) a step of,

a housing 100 provided with an electrical connection port 102 and an output port 101, wherein a storage space is arranged inside the housing 100 and is communicated with the electrical connection port 102 and the output port 101;

a driving mechanism 300 located in the storage space and used for providing power;

an output rod 200 positioned in the receiving space and capable of extending out of the housing 100 through the output port 101, thereby performing a linear reciprocating motion in a direction of an axis thereof and achieving a power output;

a transmission assembly 400 disposed in the receiving space between the driving mechanism 300 and the output lever 200 for transmitting power to the output lever 200 to drive the movement of the output lever 200;

a signal pin 500 electrically connected with the automobile control system is further arranged in the storage space, and a contact piece 600 capable of being contacted with the signal pin 500 is arranged on the output rod 200;

the output rod 200 drives the contact 600 to move in the moving process, so that the contact 600 and the signal pin 500 are in contact and not in contact with each other, and the signal pin 500 transmits a position signal of the output rod 200 to an automobile control system.

The above is the basic scheme of the present embodiment. When the automobile needs to be opened, the automobile control system gives an instruction to the driving mechanism 300, the driving mechanism 300 is started, the output rod 200 is driven to move along a straight line through the transmission assembly 400, the output rod 200 drives the contact piece 600 to move in the moving process, pins on the contact piece 600 have a contact or separation position relation with the signal pins 500 when the contact piece 600 moves, and position signals are transmitted to the automobile control system, and the automobile control system judges the state of an automobile door handle.

In this embodiment, a preferred structure of the housing 100 is provided for easy installation and use, specifically: the case 100 includes an upper cover 110 and a lower cover 120 that are covered with each other, and a receiving space is located between the upper cover 110 and the lower cover 120. The signal pin 500 is disposed on the inner end surface of the lower cover 120.

The signal pins 500 are at least one, and the lengths of the signal pins 500 are not uniform when the number is plural.

When the number of signal pins 500 is one, the contact 600 and the signal pins 500 have both contact and non-contact states therebetween, i.e., the automobile control system can receive both signals to determine the position of the output lever.

When the number of the signal pins 500 is two, two pins capable of being respectively contacted with the two signals 500 are provided on the contact 600, and the contact 600 has three states, that is, two pins are not contacted with the signal pins 500, only one pin is contacted with one signal pin 500, and two pins are respectively contacted with the two signal pins 500.

In this embodiment, a preferred corresponding form of the number of signal pins 500 and the number of pins on the contact 600 is provided, specifically: the number of the signal pins 500 is three, and the length of each signal pin 500 is inconsistent; the number of pins on the contact 600 is also three, which corresponds to the three signal pins 500.

The three pins on the contact 600 are the first pin 600, the second pin 600 and the third pin 600, the signal pins 500 corresponding to the three pins are the first pin 510, the second pin 520 and the third pin 530, the length of the first pin 510 is longest, the length of the third pin 530 is shortest, and the contacts of the three pins are on the same line.

In the initial state, the output rod 200 is contracted in the accommodating space, the output rod 200 is positioned at the first position, only the first pin 610 of the three pins is contacted with the corresponding first contact pin 510, no current loop is formed, and the automobile control system receives the first position signal;

the driving mechanism 300 is started, the output rod 200 is driven to move outwards through the transmission part, and the contact 600 is driven to move together in the moving process. When the output lever 200 is in the second position, the second pin 620 reaches the position of the second pin 520 and contacts the second pin 520, while the first pin 610 always contacts the first pin 510, and a current loop is formed when both pins are contacted by the contact 600, at which time the vehicle control system receives the second position signal.

The drive mechanism 300 continues to operate and the output rod 200 continues to move outwardly. When the output lever 200 moves to the third position, the third pin 630 reaches the position of the third pin 530 and contacts the third pin 530, while the first pin 610 always contacts the first pin 510, and the second pin 620 always contacts the second pin 520, i.e., at this time, the three pins respectively contact the three pins, and a current loop is formed between the three pins, and at this time, the automobile control system receives the third position signal.

The first, second and third position signals described above may be three position states of the door handle during deployment. In other embodiments, the arrangement may be reversed, resulting in three positions when the door handle is retracted.

The embodiment provides a preferred position mounting structure of the contact 600 and the signal pin 500, which can ensure that the contact 600 is stably mounted and can accurately contact with the signal pin 500, and the specific structure is as follows: the two ends of the output rod 200 are respectively a slider section 210 and an output section 230, the ends of the contact 600 are wrapped around the slider section 210, and the pins are exposed outside the slider section 210;

the signal pin 500 is encapsulated in the housing 100 with the contact surface exposed to the receiving space.

The storage space is divided into a driving cavity 103, a transmission cavity 104 and an output cavity 105 which are communicated with each other; the driving cavity 103 is communicated with the power-on port 102, and the output cavity 105 is communicated with the output port 101; the drive assembly 400 is located within the drive cavity 104;

the power connection port 102 is formed with a sheath 130 extending outwards, and the outer end of the signal pin 500 extends into the sheath 130.

In this embodiment, the position of the output rod 200 is limited by the output end of the housing 100 and the output cavity 105 in the housing 100, and the output rod 200 ensures a linear reciprocating motion when moving. The contact 600 is packed and injected to the rear side of the sliding block section 210 of the output rod 200, so that the contact 600 is not unstable such as shaking or sliding in the moving process, and can be always kept stable with the output rod 200. Meanwhile, the signal pins 500 are packed on the housing 100, that is, the positions of the signal pins 500 cannot be moved relative to the housing 100, so that the positions of the contact 600 and the signal pins 500 are always on the same straight line, and no dislocation is generated.

Preferably, in this embodiment, the output section 230 of the output rod 200 is sleeved with the sealing ring 30, so that the output section 230 and the output end on the housing 100 are sealed, on one hand, enough support is provided for the output rod 200, so that the output rod 200 is kept in a stable state when performing linear motion, the output of the actuator is more stable and reliable, the overall noise level is greatly reduced, and on the other hand, water seepage in the housing 100 and damage to components in the actuator are avoided.

Preferably, the driving mechanism 300 is a motor, the motor is connected with the motor pin 40, and the outer end of the motor pin 40 also extends into the sheath 130.

In the prior art, the motor pin 40 is packaged in a separate sheath 130, and then the sheath 130 is clamped into the lower cover 120, so that the motor pin 40 is connected with the driving mechanism 300 for power. In this embodiment, the sheath 130 is formed to extend over the electrical port 102, integrally with the lower cover 120, and the motor pins 40 are molded into the lower cover 120 and communicate with the position of the sheath 130. In the working process of the driving mechanism 300, the motor contact pin 40 and the lower cover 120 are molded together, so that shaking is avoided, and the connection stability of the driving mechanism 300 and the motor contact pin 40 is ensured.

The motor is used as a driving piece with very mature technology, can convert electric energy into mechanical energy, and is widely applied to various large scenes.

However, the motor is inevitably dithered in the use process, and if the motor is not processed, abnormal sound can occur in the whole actuator, and even the normal practicability of the actuator is affected. In order to solve the above-mentioned drawbacks, the output shaft is sleeved with a metal bushing 50, an input worm 700 is located between the metal bushing 50 and the main body of the motor, and two ends of the output shaft of the motor are provided with limiting gaskets 60. Through the setting of spacing gasket 60, carry out effective spacing to the output shaft both ends of motor, through the setting of metal bush 50, provide sufficient support to the motor output shaft, and then make the operation of whole motor more steady, the executor output is more reliable and stable, and the holistic noise volume of significantly reducing.

The transmission assembly 400 at least comprises an input worm 700, a duplex gear 800 and an output nut seat 900 which are in transmission connection with each other from front to back, wherein the input worm 700 is connected with the output end of the driving mechanism 300, and the output nut seat 900 is sleeved on the output rod 200; the duplex gear 800 is respectively meshed and connected with the input worm 700 and the output nut seat 900 in a transmission way.

The output rod 200 is further provided with a screw rod section 220, and the output nut seat 900 is provided with an internal thread 910 in threaded connection with the screw rod section 220.

The duplex gear 800 has a helical gear portion 810 engaged with the input worm 700, and a drive worm portion 820 engaged with the output nut seat 900 and integrally provided with the helical gear portion 810; an output bevel gear 920 engaged with the driving worm part 820 is provided on the outer wall of the output nut seat 900.

In this embodiment, the two ends of the output nut seat 900 are both sleeved with the sliding bearing 10, and the output cavity 105 is provided with a bearing hole 106 adapted to the sliding bearing 10. By providing the sliding bearing 10 on the output nut seat 900, friction and capacity loss generated during operation can be reduced, so that transmission efficiency is improved, an actuator has larger push-out force, and meanwhile, accessory abrasion can be reduced, and service life is prolonged.

A gear shaft 20 is also obliquely arranged in the transmission cavity 104, the duplex gear 800 is sleeved on the gear shaft 20, and the central axis of the gear shaft 20 coincides with the central axis of the duplex gear 800.

Because the output nut seat 900 and the duplex gear 800 are in unique matching mode, namely the rotation direction of the output nut seat 900 and the duplex gear 800 needs to be changed in the transmission process, the output nut seat and the duplex gear can receive compound acting force in multiple directions, and the sliding bearing 10 can be well limited through the arrangement of the bearing holes 106, so that the output nut seat and the duplex gear are prevented from being stressed to be separated from a station, and the stable operation of related components is ensured.

In this embodiment, the gear shaft 20 is obliquely arranged, and the gear shaft 20 and the end face of the housing 100 are always at an acute angle, so that a stable transmission effect can be ensured, and the arrangement of relevant components can be more compact.

Example 2

The embodiment provides a control method of an electronic actuator based on embodiment 1, including the following steps:

s1, an automobile control system receives a first position signal between a signal pin 500 and a contact 600, so as to confirm the state of an output rod 200;

s2, the automobile control system sends an opening signal to the driving mechanism 300, the motor rotates, and the transmission part drives the output rod 200 to move so as to drive the contact 600 to move;

s3, the contact 600 moves along with the output rod 200 to reach a second position, and the automobile control system receives a position signal of the output rod 200 at the moment;

s4, the automobile control system controls the motor to continue to rotate, and the output rod 200 continues to move to drive the contact 600 to reach a third position;

s5, the automobile control system receives the position signal of the output rod 200 at the moment, sends a closing signal to the driving mechanism 300, and the motor stops; the operation is ended.

The working principle of the utility model is as follows: the power connection port 102 of the actuator is connected with the whole vehicle wiring harness of the vehicle, so that the power on and the control of the driving mechanism 300 are realized.

The motor is started and is driven to forward, the output shaft of the motor drives the input worm 700 to synchronously rotate forward, then the input worm 700 drives the whole duplex gear 800 to rotate forward by being matched with the bevel gear part 810 on the duplex gear 800, then the output nut seat 900 is driven to rotate forward by being matched with the transmission worm part 820 on the duplex gear 800 and the output bevel gear 920 on the output nut seat 900, finally the output rod 200 is driven to rotate forward by being matched with the internal thread 910 of the output nut seat 900 and the output rod 200 and is pushed out from the output port 101 in a straight line mode, the output rod 200 drives the contact 600 on the sliding block section 210 to move in the pushing-out process, and therefore the position of the contact 600 is changed, the signal pins 500 on the contact 600 and the lower shell have different position relations, and the automobile control system receives different position signals of the output rod 200, and the position state of the door handle is judged.

Similarly, the motor is driven and the motor is reversed, the output shaft of the motor drives the input worm 700 to synchronously rotate reversely, then the input worm 700 drives the whole duplex gear 800 to rotate reversely by being matched with the bevel gear part 810 on the duplex gear 800, then the output nut seat 900 is driven to rotate reversely by being matched with the transmission worm part 820 on the duplex gear 800 and the output bevel gear 920 on the output nut seat 900, and finally the output rod 200 is driven to rotate reversely and retract linearly from the output port 101 by being matched with the internal thread 910 of the output nut seat 900 and the output rod 200. The output rod 200 drives the contact 600 to move reversely in the retraction process, and the contact 600 also changes the position relation with the signal pin 500 in the reverse movement process, so that the automobile control system receives different position signals of the output rod 200 to judge the position state of the door handle.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (9)

1. An electronic actuator, comprising,

the shell (100) is provided with an electric connection port (102) and an output port (101), and a storage space is arranged in the shell (100) and is communicated with the electric connection port (102) and the output port (101);

the driving mechanism is arranged in the storage space and is used for providing power;

an output rod (200) which is positioned in the storage space and can extend out of the shell (100) through the output port (101), so as to do linear reciprocating motion along the axis direction of the output rod and realize power output;

a transmission assembly (400) disposed in the receiving space between the driving mechanism and the output lever (200) for transmitting power to the output lever (200) to drive the movement of the output lever (200);

the method is characterized in that: a signal pin (500) electrically connected with the automobile control system is further arranged in the storage space, and a contact piece (600) capable of being contacted with the signal pin (500) is arranged on the output rod (200);

the output rod (200) drives the contact piece (600) to move in the movement process, so that the contact piece (600) and the signal pin (500) are in contact and not in contact, and therefore the automobile control system can receive different signals, and the signal pin (500) transmits the position signal of the output rod (200) to the automobile control system.

2. The electronic actuator of claim 1, wherein: the signal pins (500) are at least provided with one, and when the number is a plurality of signal pins (500), the lengths of the signal pins are not consistent.

3. The electronic actuator of claim 1, wherein: the two ends of the output rod (200) are respectively a sliding block section (210) and an output section (230), the ends of the contact piece (600) are wrapped on the sliding block section (210), and the pins are exposed out of the sliding block section (210);

the signal pin (500) is encapsulated in the housing (100) with the contact surface exposed in the receiving space.

4. The electronic actuator of claim 1, wherein: the storage space is divided into a driving cavity (103), a transmission cavity (104) and an output cavity (105) which are communicated with each other; the driving cavity (103) is communicated with the power connection port (102), and the output cavity (105) is communicated with the output port (101); the transmission assembly (400) is located within the transmission cavity (104);

the power connection port (102) is formed by extending outwards to form a sheath (130), and the outer end of the signal pin (500) extends into the sheath (130).

5. The electronic actuator of claim 4, wherein: the driving mechanism is a motor (300), a motor contact pin is connected to the motor (300), and the outer end of the motor contact pin also extends into the sheath (130).

6. The electronic actuator of claim 4, wherein: the transmission assembly (400) at least comprises an input worm (700), a duplex gear (800) and an output nut seat (900) which are in transmission connection with each other from front to back, wherein the input worm (700) is connected with the output end of the driving mechanism, and the output nut seat (900) is sleeved on the output rod (200); the duplex gear (800) is respectively meshed and in transmission connection with the input worm (700) and the output nut seat (900).

7. The electronic actuator of claim 6, wherein: the output rod (200) is also provided with a screw rod section (220), and the output nut seat (900) is provided with an internal thread (910) in threaded connection with the screw rod section (220).

8. The electronic actuator of claim 6, wherein: the duplex gear (800) is provided with a helical gear part (810) meshed with the input worm (700), and a transmission worm part (820) meshed with the output nut seat (900) and integrally arranged with the helical gear part (810); an output helical gear (920) meshed with the transmission worm part (820) is arranged on the outer wall of the output nut seat (900).

9. The electronic actuator of claim 6, wherein: the transmission cavity (104) is also obliquely provided with a gear shaft (20), the duplicate gear (800) is sleeved on the gear shaft (20), and the central axis of the gear shaft (20) coincides with the central axis of the duplicate gear (800).