Actuator of small refueling door or charging cover for vehicle

Abstract

The utility model provides an actuator for a small refueling door or a charging cover for a vehicle, which comprises a shell, a driving motor, a transmission gear, a clutch mechanism and an output gear are arranged in the shell, and the driving motor, the transmission gear, the clutch mechanism and the output gear are sequentially in transmission connection; a worm is arranged at the output end of the driving motor, a worm gear is arranged on the transmission gear, and the worm gear is connected with the worm in a meshed mode. The clutch mechanism comprises a clutch shaft, a first clutch gear and a second clutch gear, the first clutch gear is fixed on the clutch shaft, the first clutch gear is meshed with the output gear set, the first clutch gear is sleeved with the second clutch gear, the second clutch gear is meshed with the transmission gear, and the second clutch gear is meshed with the transmission gear. A clutch piece is arranged between the second clutch gear and the first clutch gear, an opening is formed in one side of the clutch piece, the overall section of the clutch piece is in a C shape, the opening of the clutch piece is connected with the second clutch gear in a clamped mode, the inner wall of the clutch piece is in interference fit with the first clutch gear, and the second clutch gear is in linkage with the first clutch gear through the clutch piece.

Description

Technical Field

[0001] The present application relates to the field of electric actuators for automobiles, and in particular to the field of electric actuators. Background Art

[0002] A fuel door or charging cap is a cover on a car, electric car, or hybrid car that covers the vehicle's fuel or charging port. This door or cover is usually designed to be easy to open so that the user can easily insert the fuel or charging gun. It is usually made of durable plastic or metal to protect the fuel door or charging port from dirt, water, or other foreign matter.

[0003] At present, the actuators of common vehicle refueling doors or charging caps mostly adopt a structure in which a worm gear meshes with a reduction gear set to output to the output end. When the charging cap is manually adjusted or hit, the output end of the actuator will output a force in the opposite direction to the reduction gear set and the worm gear. Since the worm gear has a self-locking property, the force output by the reduction gear set to the worm gear can easily damage the reduction gear set, affecting its service life. For this reason, some newly designed transmission and clutch combined mechanisms have appeared on the market to solve the overload problem. However, the problem is that the above-mentioned transmission and clutch combined mechanisms have more components, the structure is not compact enough, and the volume occupied is large, which makes the overall size of the actuator larger, which is not conducive to the development direction of lightweight vehicles. Summary of the invention

[0004] The problem to be solved by the utility model is to provide an actuator for a vehicle fuel door or charging cover with a simplified structure and compact assembly, so that the overall size of the actuator is small, which is conducive to the development direction of lightweight vehicles.

[0005] The technical solution adopted by the utility model to solve the above-mentioned problem is: an actuator for a vehicle fuel door or charging cover, comprising a housing, a driving motor, a transmission gear, a clutch mechanism, and an output gear are arranged in the housing, and the driving motor, the transmission gear, the clutch mechanism, and the output gear are sequentially connected in transmission; a worm is arranged at the output end of the driving motor, a worm wheel is arranged on the transmission gear, and the worm wheel is meshed with the worm; the clutch mechanism comprises a clutch shaft, a first clutch gear, and a second clutch gear, the first clutch gear is fixed on the clutch shaft, the first clutch gear is meshed with the output gear set, the second clutch gear is sleeved on the first clutch gear, the second clutch gear is meshed with the transmission gear, a clutch member is arranged between the second clutch gear and the first clutch gear, an opening is arranged on one side of the clutch member, and the overall cross-section is C-shaped, the opening is engaged with the second clutch gear, the inner wall is interference fit with the first clutch gear, and the second clutch gear is linked with the first clutch gear through the clutch member.

[0006] Compared with the prior art, the advantages of this application are: the actuator is decoupled through the clutch member on the clutch mechanism inside it. When the refueling door or the electric charging cover is subjected to external collision or manual adjustment, the worm gear structure is in a self-locking state, causing the transmission gear and the second clutch gear to be in a stationary state. When the force transmitted by the output gear is greater than the static friction between the clutch member and the first clutch gear, the first clutch gear and the second clutch gear are decoupled and idle, protecting the gear set from damage and avoiding the problem of overall failure of the actuator. In addition, the overall structural design of the internal clutch mechanism is reasonable and more compact, so that the overall size of the actuator can be effectively reduced, which is conducive to the development direction of lightweight automobiles.

[0007] Preferably, a first mounting shaft is provided on the first clutch gear, and the outer wall of the first mounting shaft is interference fit with the inner wall of the clutch member. This structure allows the inner wall of the entire clutch member to be interference fit with the first clutch gear, resulting in a better linkage effect.

[0008] Preferably, the second clutch gear has an installation cavity, the clutch member is arranged in the installation cavity, and the side wall of the installation cavity has a snap-in protrusion, and the snap-in protrusion is snap-fitted with the opening of the clutch member. This structure makes it easier to snap the opening of the clutch member onto the second clutch gear.

[0009] Preferably, an annular flange is extended outward from the bottom of the mounting shaft, the bottom surface of the clutch member abuts against the upper end surface of the annular flange, and the top surface abuts against the top surface of the mounting cavity to ensure that the clutch member does not move up and down.

[0010] Preferably, the first clutch gear has a second mounting shaft, the second clutch gear is provided with a mounting hole, the second mounting shaft is rotatably connected in the mounting hole, and the mounting hole is provided with a plurality of air-permeable grooves connected to the outside along the axial direction of the mounting hole to prevent air from being inside the mounting shaft when the mounting shaft is rotatably connected in the mounting hole, thereby making the rotational connection smoother.

[0011] Preferably, the clutch shaft is arranged at the center of the first clutch gear, and the clutch shaft and the first clutch gear are an integrated structure, and the integrated structure is more solid. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Figure 2 This is a three-dimensional diagram of the utility model after removing the shell;

[0014] Figure 3 This is an exploded diagram of the clutch mechanism of the utility model;

[0015] Figure 4 It is a three-dimensional diagram of the clutch member of the utility model being clamped on the second clutch gear;

[0016] Illustration: 1. Housing; 2. Driving motor; 2.1. Worm; 3. Transmission gear; 3.1. Worm wheel; 4. Clutch mechanism; 4.1. Clutch shaft; 4.2. First clutch gear; 4.2.1. First mounting shaft; 4.2.2. Second mounting shaft; 4.2.3. Annular flange; 4.3. Second clutch gear; 4.3.1. Mounting cavity; 4.3.2. Clamping protrusion; 4.3.3. Mounting hole; 4.3.4. Breathing groove; 4.4. Clutch member; 5. Output gear; DETAILED DESCRIPTION

[0017] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0018] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0019] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0020] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0021] See also Figure 1 , an actuator for a vehicle fuel door or charging cover, mainly includes a housing 1, a driving motor 2, a transmission gear 3, a clutch mechanism 4 and an output gear 5, which are connected together in sequence to form an overall working system. The specific structure and function of each component are detailed below:

[0022] See also Figure 2 , driving motor 2: drives the component of the entire actuator, and a worm 2.1 is provided at the output end, which is meshed and connected with a worm wheel 3.1 provided on the transmission gear 3 to transmit the power output by the motor to the next component.

[0023] Transmission gear 3: receives the power from the worm 2.1 and transmits it to the clutch mechanism 4 to play a transmission role.

[0024] See also Figure 3 , Clutch mechanism 4: includes clutch shaft 4.1, first clutch gear 4.2, second clutch gear 4.3 and clutch member 4.4. The first clutch gear 4.2 is fixed on the clutch shaft 4.1 and meshes with the output gear 5; the second clutch gear 4.3 is meshed and connected with the transmission gear 3, and a clutch member 4.4 is arranged between the second clutch gear 4.3 and the first clutch gear 4.2.

[0025] See also Figure 3 , output gear 5: receives the power transmitted by the clutch mechanism 4, and transmits it to the next component of the actuator to transmit power.

[0026] See also Figure 4 Specifically, one side of the clutch member 4.4 is provided with an opening, and the overall cross-section is C-shaped. The opening is engaged with the second clutch gear 4.3, and the inner wall is interference-fitted with the first clutch gear 4.2 to achieve the linkage of the clutch member 4.4 and the first clutch gear 4.2.

[0027] The clutch member 4.4 is arranged in the mounting cavity 4.3.1 of the second clutch gear 4.3. The side wall of the mounting cavity 4.3.1 has a snap-fitting protrusion 4.3.2 which snaps into the opening of the clutch member 4.4 to ensure that the clutch member 4.4 will not be displaced.

[0028] See also Figure 3 The first clutch gear 4.2 is also provided with a first mounting shaft 4.2.1, which is interference fit with the inner wall of the clutch member 4.4 to ensure that the clutch member 4.4 and the first clutch gear 4.2 can generate linkage.

[0029] In addition, a mounting hole 4.3.3 is provided on the second clutch gear 4.3, a second mounting shaft 4.2.2 is provided on the first clutch gear 4.2, and the second mounting shaft 4.2.2 is rotatably connected in the mounting hole 4.3.3, and a venting groove 4.3.4 is also provided on the mounting hole 4.3.3.

[0030] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. An actuator for a vehicle refueling door or charging cover, characterized in that: The invention comprises a housing (1), wherein a driving motor (2), a transmission gear (3), a clutch mechanism (4), and an output gear (5) are arranged in the housing (1), wherein the driving motor (2), the transmission gear (3), the clutch mechanism (4), and the output gear (5) are sequentially connected in transmission; a worm (2.1) is arranged at the output end of the driving motor (2), a worm wheel (3.1) is arranged on the transmission gear (3), and the worm wheel (3.1) is meshingly connected with the worm (2.1); the clutch mechanism (4) comprises a clutch shaft (4.1), a first clutch gear (4.2), and a second clutch gear (4.3), wherein the first clutch gear (4.2) is fixed to the clutch shaft (4.1) and the second clutch gear (4.3) is meshingly connected with the worm wheel (2.1); ), the first clutch gear (4.2) is meshed with the output gear (5), the first clutch gear (4.2) is sleeved with a second clutch gear (4.3), the second clutch gear (4.3) is meshed with the transmission gear (3), a clutch member (4.4) is arranged between the second clutch gear (4.3) and the first clutch gear (4.2), one side of the clutch member (4.4) is provided with an opening, the overall cross-section is C-shaped, the opening is engaged with the second clutch gear (4.3), the inner wall is interference fit with the first clutch gear (4.2), and the second clutch gear (4.3) is linked with the first clutch gear (4.2) through the clutch member (4.4).

2. The actuator of a vehicle fuel door or charging cover according to claim 1, characterized in that: The first clutch gear (4.2) is provided with a first installation shaft (4.2.1), and the outer wall of the first installation shaft (4.2.1) is interference-fitted with the inner wall of the clutch component (4.4).

3. The actuator for a vehicle fuel door or charging cover according to claim 1, characterized in that: The second clutch gear (4.3) has a mounting cavity (4.3.1), the clutch member (4.4) is arranged in the mounting cavity (4.3.1), a clamping protrusion (4.3.2) is provided on the side wall of the mounting cavity (4.3.1), and the clamping protrusion (4.3.2) is clamped in cooperation with an opening of the clutch member (4.4).

4. The actuator for a vehicle fuel door or charging cover according to claim 1, characterized in that: The first clutch gear (4.2) is provided with a second mounting shaft (4.2.2), the second clutch gear (4.3) is provided with a mounting hole (4.3.3), the second mounting shaft (4.2.2) is rotatably connected in the mounting hole (4.3.3), and the mounting hole (4.3.3) is provided with a plurality of air-permeable grooves (4.3.4) connected to the outside along the axial direction of the mounting hole (4.3.3).

5. The actuator for a vehicle fuel door or charging cover according to claim 1, characterized in that: The clutch shaft (4.1) is arranged at the center of the first clutch gear (4.2), and the clutch shaft (4.1) and the first clutch gear (4.2) are an integrated structure.

Images