Electric actuator for automobile handle

Abstract

The utility model relates to an electric actuator for an automobile handle, which comprises a shell provided with a power connection port and an output port, and the interior of the shell is hollow to form a storage space communicated with the power connection port and the output port; the driving mechanism is located in the storage space and is powered on through the power connection port to provide power; the output rod is located in the containing space, and the first end of the output rod can stretch out of the shell through the output port so that the output rod can do linear reciprocating motion in the axis direction of the output rod and achieve power output. The transmission assembly is arranged 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 second end of the output rod is provided with a boosting component, and the boosting component abuts against the output rod, so that the output rod has the trend of moving towards one side of the output port all the time.

Description

Technical Field

[0001] The utility model relates to the application field of electric actuators, in particular to an electric actuator used for automobile handles. Background Art

[0002] Traditional car exterior door handles are basically manual. When the user unlocks the door lock signal, the user holds the handle and opens the door under the action of pulling force. The connection between the manual handle and the door is connected through a manual elastic mechanical device. In order to facilitate the operator to pull it open, the manual handle needs to be exposed on the surface of the door, which is not only easy to accumulate dust, but also brings problems such as wind resistance when driving at high speed.

[0003] In order to solve the above problems, some manufacturers have launched hidden car exterior handles. Hidden car exterior handles generally have three states, namely the initial hidden state, the pre-expanded state and the fully expanded state. When in use, the electronic lock is generally unlocked by the key. At this time, the driving computer gives an instruction to push the car exterior handle from the hidden state to the pre-expanded state through the actuator. Then the user can hold and pull the car exterior handle to switch it from the pre-expanded state to the fully expanded state, while unlocking the mechanical lock and opening the door.

[0004] The electric linear actuator designed in the prior art generally transmits the transmission component through a driving component such as a motor, converts the rotation of the motor into the linear movement of the output rod, thereby realizing the push-out and retraction of the handle by the output rod;

[0005] In this configuration, the extension and retraction of the output rod are driven by the motor. At the same time, the load of the handle is added to the output rod, so a larger power motor is needed. The requirements for the motor are higher, so the range of motor selection is correspondingly smaller. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides an electric actuator for a car handle.

[0007] The technical solution provided by the utility model to solve the above technical problems is:

[0008] include,

[0009] A housing is provided with a power connection port and an output port, and the inner hollow space of the housing is configured as a storage space communicating with the power connection port and the output port;

[0010] A driving mechanism is located in the storage space and is energized through a power port to provide power;

[0011] An output rod is located in the receiving space and a first end of which can extend out of the housing through the output port, so as to perform linear reciprocating motion along its own axis and realize power output;

[0012] A transmission assembly, disposed between the driving mechanism and the output rod, for transmitting power to the output rod to drive the output rod to move;

[0013] The second end of the output rod is provided with a boosting component, and the boosting component supports the output rod so that the output rod always has a tendency to move toward one side of the output port.

[0014] The above technical solution is further configured as follows: the boosting component is an elastic supporting member, and two ends of the elastic supporting member abut against the output rod and the inner wall of the housing respectively.

[0015] The above technical solution is further configured as follows: a push block is provided at the second end of the output rod, and the boosting component abuts against the push block.

[0016] The above technical solution is further configured as follows: a spring column is provided at the second end of the output rod, and the boosting component is a spring sleeved on the spring column.

[0017] The above technical solution is further configured as follows: the transmission assembly is a worm gear transmission mechanism, which at least includes an input worm and an output worm wheel, the input worm is connected to the output shaft of the driving mechanism, and the output worm wheel transmits the output rod.

[0018] The above technical solution is further configured as follows: the transmission assembly also includes a transmission seat, which is cylindrical and has an internal thread and an external tooth portion, and the output rod is provided with a threaded portion that matches the internal thread; the output gear and the external tooth portion of the threaded seat are meshed and transmission connected.

[0019] The above technical solution is further configured as follows: the output worm gear is a double gear, including an output worm and a worm wheel portion arranged in a second order row, the worm wheel portion and the input worm are meshed for transmission, and the output worm and the transmission seat are meshed for transmission.

[0020] The above technical solution is further configured as follows: the outer tooth portion is a helical tooth portion.

[0021] The above technical solution is further configured as follows: the storage space is configured as an input space, a transmission space and an output space which are interconnected, and the driving mechanism, the transmission assembly and the output rod are sequentially located in the input space, the transmission space and the output space;

[0022] A sliding area is provided in the output space, and the push block is movably provided in the sliding area.

[0023] The above technical solution is further configured as follows: a slide groove matching the output rod is provided in the output space, the sliding area is located in the middle of the slide groove, and the inner diameter of the sliding area is larger than the inner diameter of the slide groove.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. A boosting component is provided at one end of the output rod to boost the output rod, so that the output rod is driven by both the driving mechanism and the boosting component during the extension process, which can reduce the power required by the driving mechanism and increase the selection range of the driving mechanism during the design process;

[0026] 2. The output thrust can be changed by adjusting the performance of the booster component and selecting the appropriate booster component, so that the actuator can cope with various working conditions requiring output force and reduce the development cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the exploded structure of the utility model.

[0028] Figure 2 This is a schematic diagram of the structure in the state where the output rod is retracted into the storage space.

[0029] Figure 3 It is a schematic diagram of the state structure when the output rod is extended.

[0030] Figure 4 Schematic diagram of the connection structure of the transmission component.

[0031] Figure 5 It is a schematic diagram of the structure of the output rod and the booster component.

[0032] Figure 6 This is a schematic diagram of the structure inside the storage space.

[0033] The drawings are marked as follows: 100, housing; 101, power connection port; 102, output port; 110, input space; 120, transmission space; 130, output space; 131, sliding area;

[0034] 200, driving mechanism;

[0035] 300, output rod; 310, push block; 301, output section; 320, threaded section; 330, spring column;

[0036] 400, booster components;

[0037] 500, input worm; 501, limit groove;

[0038] 600, output worm wheel; 610, output worm; 620, worm wheel portion;

[0039] 700, transmission seat; 710, internal thread; 720, external tooth portion. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] like Figure 1-6 As shown, the following embodiment discloses an electric actuator for a vehicle handle.

[0042] Specific reference Figure 1 As shown, including,

[0043] The housing 100 is provided with a power connection port 101 and an output port 102, and the inner hollow space of the housing 100 is configured as a storage space communicating with the power connection port 101 and the output port 102;

[0044] The driving mechanism 200 is located in the storage space and is powered by the power port 101 to provide power;

[0045] The output rod 300 is located in the receiving space and its first end can extend out of the housing 100 through the output port 102, so as to perform linear reciprocating motion along its own axis and realize power output;

[0046] A transmission assembly, disposed between the driving mechanism 200 and the output rod 300, for transmitting power to the output rod 300 to drive the output rod 300 to move;

[0047] The second end of the output rod 300 is provided with a boosting component 400 , and the boosting component 400 supports the output rod 300 so that the output rod 300 always has a tendency to move toward the output port 102 .

[0048] The above is the basic solution of this embodiment.

[0049] When the car door handle is in a hidden state, the output rod 300 is located in the storage space; when the car door handle needs to be opened, the in-vehicle system controls the drive mechanism 200 to start, and the drive mechanism 200 outputs power to the transmission assembly, and the transmission assembly converts the rotation of the drive mechanism 200 into linear motion and outputs it to the output rod 300, so that the output rod 300 moves toward the output port 102 through linear movement, so that the first end extends out of the output port 102, thereby pushing the door handle out;

[0050] During this process, the boost component 400 boosts the output rod 300, so that the output rod 300 tends to move toward the output port 102. At this time, the power source of the output rod 300 is the thrust of the boost component 400 on the output rod 300 and the driving force of the drive mechanism 200 on the output rod 300, thereby reducing the driving force of the drive mechanism 200. That is, the drive mechanism 200 can drive the output rod 300 with a smaller driving force, which can cope with various working conditions requiring output force and reduce the development cycle.

[0051] Under this setting, if a driving mechanism 200 with lower power is to be used, it is only necessary to adjust the boost component 400 so that it has a greater boost force to meet the requirement for pushing out the output rod 300, thereby increasing the selection range of the driving mechanism 200 and also providing certain protection for the driving mechanism 200 and reducing the load on the driving mechanism 200.

[0052] Preferably, the driving component in this embodiment is a motor. As a product with very mature technology, the motor can convert electrical energy into mechanical energy and is widely used in various scenarios.

[0053] Preferably, in order to enable the boosting component 400 to automatically have a boosting force, in this embodiment, the boosting component 400 is an elastic supporting component, and two ends of the elastic supporting component abut against the output rod 300 and the inner wall of the housing 100 respectively.

[0054] At the same time, since the output rod 300 is usually set to a rod shape with a smaller inner diameter, in order to prevent the boosting component 400 from sliding out or misaligning from the second end of the output rod 300, in this embodiment, the second end of the output rod 300 is provided with a push block 310, and the boosting component 400 abuts against the push block 310.

[0055] Specifically, the pushing block 310 in this embodiment is configured as a square block, and the end of the boosting component 400 abuts against the rear end surface of the pushing block 310 to ensure that the pushing block 310 can be supported, thereby providing a boosting force to the output rod 300 .

[0056] Preferably, in this embodiment, the push block 310 is formed at the second end of the output rod 300. In other embodiments, the two components may be mounted via a fixed structure.

[0057] The elastic supporting member described in this embodiment can be a structure such as a spring sheet, which has a certain restoring elastic force when compressed or bent, thereby providing a boosting force for the output rod 300.

[0058] In this embodiment, a preferred structure of a boost component 400 is provided, which can automatically have an output force when the output rod 300 is retracted, thereby providing a boost force to the output rod 300. The specific implementation method is as follows: a spring column 330 is provided at the second end of the output rod 300, and the boost component 400 is a spring, which is sleeved on the spring column 330.

[0059] When the output rod 300 is retracted into the storage space, the push block 310 compresses the spring, so that the spring has a restoring elastic force, thereby exerting a holding force on the push block 310. Figure 2 As shown; when the output rod 300 extends outward under the action of the driving mechanism 200 and the transmission assembly, the pressure on the spring by the push block 310 is reduced, the spring gradually resets, and during the reset process, a thrust is generated on the push block 310, thereby causing the push block 310 to be boosted, refer to Figure 3 shown.

[0060] In the present embodiment, a preferred structure of a transmission assembly and an output rod 300 is provided, which integrates the input and output of power and can be connected to the output rod 300 to convert the rotation of the driving mechanism 200 into the linear movement of the output rod 300. The specific implementation is as follows: the transmission assembly is a worm gear transmission mechanism, which at least includes an input worm 500 and an output worm wheel 600, the input worm 500 is connected to the output shaft of the driving mechanism 200, and the output worm wheel 600 transmits the output rod 300.

[0061] Reference Figure 4 As shown, the center of the input worm 500 is set as a limiting groove 501, which is limitedly connected with the output shaft of the driving mechanism 200. When the driving mechanism 200 is started, the output shaft drives the input worm 500 to rotate at the same time, and the output worm wheel 600 engages with the input worm 500, so that the input worm 500 drives the output worm wheel 600 to rotate, and the output worm wheel 600 is connected to the output rod 300, so as to transmit the output rod 300 and make the output rod 300 move linearly.

[0062] The output worm gear 600 rotates around the central axis and converts the rotational motion into the axial motion of the output shaft. The specific implementation method for solving this problem in this embodiment is as follows: the transmission assembly also includes a transmission seat 700, which is cylindrical and has an internal thread 710 and an external tooth portion 720. The output rod 300 is provided with a threaded portion that cooperates with the internal thread 710; the output worm gear 600 and the external tooth portion 720 of the threaded seat are meshed and transmission connected.

[0063] When the output worm gear 600 rotates, the transmission base 700 is driven to rotate. During the self-rotation of the transmission base 700, the internal thread 710 of the inner ring thereof also rotates. The internal thread 710 and the threaded portion on the output rod 300 form a thread drive, thereby causing the output rod 300 to move linearly in the horizontal direction.

[0064] Preferably, in order to avoid transmission problems such as the worm gear structure getting stuck during the transmission process, in this embodiment, the input position and the output position are distinguished, and the specific implementation method is as follows:

[0065] The output worm gear 600 is a double gear, including an output worm 610 and a worm wheel portion 620 arranged in a second order row. The worm wheel portion 620 and the input worm 500 are meshed for transmission, and the output worm 610 and the transmission seat 700 are meshed for transmission.

[0066] When the input worm 500 transmits power to the worm wheel 620, the output worm 610 and the worm wheel 620 rotate simultaneously, and the output worm 610 meshes with the transmission seat 700, thereby transmitting power to the transmission seat 700;

[0067] In this arrangement, the output worm gear 600 is arranged as a double gear, and the input portion and the output portion are arranged separately, thereby avoiding the transmission jamming caused by the input portion and the output portion being on the same gear.

[0068] Preferably, in this embodiment, the outer tooth portion 720 is a helical tooth portion.

[0069] Compared with spur gears, helical gears can be driven at any angle to the axis due to the spiral tooth surface, so they have a wider range of applications. At the same time, helical gears have oblique teeth, which makes the gear transmission smoother and the noise relatively small. At the same time, helical gears have more contact points, which makes the service life of helical gears longer.

[0070] In this embodiment, in order to adapt to the structure of each component, each component is limited in the storage space to avoid the misalignment of each component during the transmission process. The specific implementation method for solving this problem in this embodiment is as follows: the storage space is configured as an input space 110, a transmission space 120 and an output space 130 that are interconnected, and the driving mechanism 200, the transmission component and the output rod 300 are sequentially located in the input space 110, the transmission space 120 and the output space 130;

[0071] A sliding area 131 is disposed in the output space 130 , and the push block 310 is movably disposed in the sliding area 131 .

[0072] Preferably, refer to Figure 6As shown, in this embodiment, when the driving mechanism 200 transmits the transmission component, due to the small displacement of the activity of the transmission component, the shell 100 on the upper and lower sides of the transmission space 120 will be supported, causing the shell 100 to deform. In this embodiment, a plurality of honeycomb-shaped grooves are provided on the inner wall of the shell 100 in the transmission space 120 to adjust the activity space of the transmission component and decompose the thrust of the transmission component on the shell 100 to reduce the deformation of the shell 100 and ensure the consistency of the shell 100.

[0073] This embodiment provides a preferred structure of the output rod 300, which combines the functions of power book input and output, as well as guide limit and the like. The specific implementation method is as follows: Figure 5 As shown, the output rod 300 includes an output section 301, a threaded section 320 and a spring column 330 from the first end to the second end, and the push block 310 is located between the threaded section 320 and the spring column 330. The output section 301 can extend to the outside of the housing 100 through the output port 102. The threaded section 320 is threadedly connected to the transmission seat 700 through the threaded portion. At the same time, a slide groove matching the output rod 300 is provided in the output space 130, and the sliding area 131 is located in the middle of the slide groove, and the inner diameter of the sliding area 131 is larger than the inner diameter of the slide groove.

[0074] When the output rod 300 is extending and retracting, the push block 310 also moves accordingly, and the sliding area 131 in the output space 130 limits the sliding range of the push block 310, thereby limiting the moving range of the output rod 300, thereby preventing the output rod 300 from extending too long.

[0075] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electric actuator for a car handle, comprising: A housing (100) is provided with a power connection port (101) and an output port (102), and the interior hollow space of the housing (100) is configured as a storage space in communication with the power connection port (101) and the output port (102); A driving mechanism (200) is located in the storage space and is energized through the power connection port (101) to provide power; An output rod (300) is located in the storage space and its first end can extend out of the housing (100) through the output port (102), thereby performing linear reciprocating motion along its own axis and achieving power output; A transmission assembly, disposed between the driving mechanism (200) and the output rod (300), and used for transmitting power to the output rod (300) to drive the output rod (300) to move; Features: The second end of the output rod (300) is provided with a boosting component (400), and the boosting component (400) supports the output rod (300) so that the output rod (300) always has a tendency to move toward the output port (102).

2. The electric actuator for a vehicle handle according to claim 1, characterized in that: The boosting component (400) is an elastic supporting component, and the two ends of the elastic supporting component respectively abut against the output rod (300) and the inner wall of the housing (100).

3. The electric actuator for a vehicle handle according to claim 1 or 2, characterized in that: A push block (310) is provided at the second end of the output rod (300), and the boosting component (400) abuts against the push block (310).

4. The electric actuator for a vehicle handle according to claim 3, characterized in that: The second end of the output rod (300) is provided with a spring column (330), and the boosting component (400) is a spring sleeved on the spring column (330).

5. The electric actuator for a vehicle handle according to claim 1, characterized in that: The transmission assembly is a worm gear transmission mechanism, which at least comprises an input worm (500) and an output worm wheel (600), wherein the input worm (500) is connected to the output shaft of the driving mechanism (200), and the output worm wheel (600) transmits power to the output rod (300).

6. The electric actuator for a vehicle handle according to claim 5, characterized in that: The transmission assembly further comprises a transmission seat (700), the transmission seat (700) is arranged in a cylindrical shape and has an internal thread (710) and an external tooth portion (720), the output rod (300) is provided with a thread portion matching the internal thread (710), and the output worm gear (600) and the external tooth portion (720) of the thread portion are meshed and transmission-connected.

7. The electric actuator for a vehicle handle according to claim 6, characterized in that: The output worm gear (600) is a double gear, comprising an output worm (610) and a worm wheel portion (620) arranged in a second order row; the worm wheel portion (620) and the input worm (500) are meshed for transmission; and the output worm (610) and the transmission seat (700) are meshed for transmission.

8. The electric actuator for a vehicle handle according to claim 6, characterized in that: The outer tooth portion (720) is a helical tooth portion.

9. The electric actuator for a vehicle handle according to claim 3, characterized in that: The storage space is configured as an input space (110), a transmission space (120) and an output space (130) which are interconnected, and the driving mechanism (200), the transmission assembly and the output rod (300) are sequentially located in the input space (110), the transmission space (120) and the output space (130); A sliding area (131) is provided in the output space (130), and the push block (310) is movably arranged in the sliding area (131).

10. The electric actuator for a vehicle handle according to claim 9, characterized in that: A slide groove matching the output rod (300) is arranged in the output space (130), the sliding area (131) is located in the middle of the slide groove, and the inner diameter of the sliding area (131) is larger than the inner diameter of the slide groove.

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