Charging port rotary actuator with novel spring clutch

Abstract

The utility model relates to a charging port rotation actuator with a novel spring clutch, which comprises a motor, a worm, a first gear, a second gear, a clutch assembly and output teeth, the output end of the motor is connected with and drives the worm to rotate, the worm is meshed with the first gear, and the other end of the first gear is meshed with the second gear. The other end of the second gear is engaged with a clutch assembly, the other end of the clutch assembly is engaged with an output gear, and the output gear is connected with a small charging door to drive electric opening and closing of a charging port. The clutch assembly comprises a clutch input gear, a clutch output gear and a torsional spring, one end of the torsional spring is bent to form a corner, the corner of the torsional spring is in interference fit with the clutch input gear, and the inner diameter of the torsional spring is in interference fit with the cylindrical outer diameter of the clutch output gear; the holding torque of the clutch is provided through friction force of the spring and the shaft, clutch operation, namely relative sliding of the spring and the shaft, belongs to stepless friction clutch, abnormal sound is avoided, the torque is more stable, and the clutch can be matched with small charging doors of different sizes.

Description

[Technical Field]

[0001] This utility model relates to the field of automotive parts technology, specifically a charging port rotary actuator with a novel spring clutch. [Background Technology]

[0002] Currently, in existing technologies, the clutches in rotary actuators with charging ports that incorporate clutch mechanisms are mostly jaw clutches, which have the following main drawbacks:

[0003] (1) When the clutch mechanism is in operation, the toothed teeth will produce a rattling noise, which is a stepped friction clutch, resulting in a poor user experience.

[0004] (2) On the other hand, regarding friction clutches, their core components are all made of plastic, and their dimensions are greatly affected by temperature, which leads to unstable clutch performance. [Utility Model Content]

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a rotary actuator for a charging port with a novel spring clutch. The clutch engagement and disengagement are silent and noiseless, and the torque provided is more stable, making it compatible with charging ports of different sizes.

[0006] To achieve the above objectives, a rotary actuator for a charging port with a novel spring clutch is designed, comprising a motor 1, a worm 2, a first gear 3, a second gear 4, a clutch assembly 5, and an output gear 6. The output end of the motor 1 is connected to and drives the worm 2 to rotate. The worm 2 meshes with the first gear 3, and the other end of the first gear 3 meshes with the second gear 4. The other end of the second gear 4 meshes with the clutch assembly 5, and the other end of the clutch assembly 5 meshes with the output gear 6. The output gear 6 is connected to a charging gate, thereby driving the electric opening and closing of the charging port. The clutch assembly 5 includes a clutch input gear 7, a clutch output gear 8, and a torsion spring 9. One end of the torsion spring 9 is bent to form a bend 10, and the bend 10 of the torsion spring 9 is interference-fitted with the clutch input gear 7. The inner diameter of the torsion spring 9 is interference-fitted with the cylindrical outer diameter of the clutch output gear 8.

[0007] Furthermore, the torsion spring 9 is sleeved on the clutch output gear 8, and a clutch input gear 7 is provided above the torsion spring 9. The clutch input gear 7 is sleeved on the clutch output gear 8 and is connected to the clutch output gear 8. The clutch input gear 7 and the clutch output gear 8 are a whole and move around the rotating shaft as the rotation center. This not only improves the concentricity but also makes the torque provided by the clutch more stable.

[0008] Furthermore, the clutch input gear 7 is designed as an insert structure, comprising a plastic body 11 and a metal insert 12. The upper part of the inner wall of the plastic body 11 is embedded with the metal insert 12, and the metal insert 12 is connected to the clutch output gear 8, which further ensures strength and improves reliability.

[0009] Furthermore, the outer wall of the metal insert 12 is provided with protrusions, which are connected to the grooves on the inner wall of the plastic body 11 through the protrusions, thereby making the connection more stable and reliable.

[0010] Furthermore, the gear 3, gear 4 and clutch assembly 5 are arranged in a U-shaped structure, and the gear 4, clutch assembly 5 and output gear 6 are arranged in an inverted U-shaped structure. This gear system arrangement can achieve a more compact structure.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] (1) This utility model provides the holding torque of the clutch through the friction of the spring and the shaft. The operation of the clutch is that the spring and the shaft slide relative to each other, which is a stepless friction clutch with no abnormal noise.

[0013] (2) The core components of the clutch in this utility model are all metal parts, which are less affected by temperature and have stable performance;

[0014] (3) The spring clutch mechanism of this utility model is silent when the clutch is disengaged and engaged, and the holding torque can be adjusted by the size of the spring wire diameter, which can match the charging door of different sizes.

[0015] (4) This utility model adopts a U-shaped gear system arrangement, which is compact in structure and the actuator is self-locking, which can ensure that the charging door will not open during driving without a locking mechanism;

[0016] (5) Compared with the previous structure, this utility model can reduce one pair of friction pairs (the mating end faces of the clutch input and output teeth), and the concentricity of the clutch input and output gears is better, providing more stable torque;

[0017] (6) The torsion spring of this utility model has an additional bend, which can ensure more contact surface with the clutch input gear, as well as ensure the stability and strength of the spring.

[0018] (7) The clutch input gear of this utility model is an insert design, which can ensure strength and reliability, and eliminates the oil reservoir of the clutch output gear, making the structure simpler. [Image Description]

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the clutch assembly of this utility model;

[0021] Figure 3 This is a partial structural schematic diagram of the clutch assembly of this utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the clutch assembly of this utility model;

[0023] Figure 5 This is an exploded view of the clutch assembly of this utility model;

[0024] Figure 6 This is a schematic diagram of the clutch input gear of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the clutch assembly before the improvement of this utility model;

[0026] In the diagram: 1. Motor; 2. Worm gear; 3. Gear 1; 4. Gear 2; 5. Clutch assembly; 6. Output gear; 7. Clutch input gear; 8. Clutch output gear; 9. Torsion spring; 10. Corner; 11. Plastic body; 12. Metal insert; 13. Shaft. [Detailed Implementation]

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] As attached Figure 1 To be continued Figure 6 As shown, this utility model provides a rotary actuator for a vehicle charging port with a novel spring clutch, including a motor 1, a worm 2, a first gear 3, a second gear 4, a clutch assembly 5, and an output tooth 6. The output end of the motor 1 is connected to and drives the worm 2 to rotate. The worm 2 meshes with the first gear 3, the other end of the first gear 3 meshes with the second gear 4, the other end of the second gear 4 meshes with the clutch assembly 5, and the other end of the clutch assembly 5 meshes with the output tooth 6. The output tooth 6 is connected to the charging port gate, thereby driving the electric opening and closing of the charging port. The clutch assembly 5 includes a clutch input gear 7, a clutch output gear 8, and a torsion spring 9. One end of the torsion spring 9 is bent to form a bend 10, and the bend 10 of the torsion spring 9 is interference-fitted with the clutch input gear 7. The inner diameter of the torsion spring 9 is interference-fitted with the cylindrical outer diameter of the clutch output gear 8.

[0029] The torsion spring 9 is mounted on the clutch output gear 8, and the clutch input gear 7 is located above the torsion spring 9. The clutch input gear 7 is mounted on the clutch output gear 8 and is connected to it. The clutch input gear 7 and the clutch output gear 8 are a whole, rotating around the shaft as the center of rotation, which not only improves concentricity but also makes the torque provided by the clutch more stable. Gear 1 3, gear 2 4 and clutch assembly 5 are arranged in a U-shaped structure, and gear 2 4, clutch assembly 5 and output gear 6 are arranged in an inverted U-shaped structure. This gear system arrangement allows for a more compact structure.

[0030] The clutch input gear 7 is designed as an insert structure, which includes a plastic body 11 and a metal insert 12. The metal insert 12 is embedded in the upper part of the inner wall of the plastic body 11 and is connected to the clutch output gear 8 through the metal insert 12, which further ensures strength and makes it more reliable. The outer wall of the metal insert 12 is provided with protrusions, which are connected to the slots on the inner wall of the plastic body 11 through the protrusions, so that the connection is more stable and reliable.

[0031] The actuator described in this utility model mainly includes a motor, a worm gear, gear one, gear two, a clutch assembly, and output teeth. The worm gear is designed to be self-locking. When the motor drives the charging gate, the motor shaft rotates the worm gear, and power is transmitted from the worm gear to gear one, gear two, the clutch assembly, and then to the output teeth. The output teeth are connected to the charging gate, thus driving the electric opening and closing of the charging port.

[0032] The clutch assembly includes a clutch input gear, a clutch output gear, and a torsion spring. The torsion spring's bevel is interference-fitted with the clutch input gear, ensuring that the torsion spring and clutch input gear function as a single unit during operation. The inner diameter of the torsion spring is interference-fitted with the cylindrical outer diameter of the clutch output gear, providing a certain frictional holding torque. During normal operation, the three components are tightly integrated. When the driving torque exceeds the frictional torque of the spring and clutch output gear, the spring and clutch output gear slide relative to each other, i.e., the clutch disengages. The sliding of the spring and clutch output gear during clutch disengagement is frictionless and produces no abnormal noise, resulting in a quiet operation.

[0033] When the charging door is manually operated, the output teeth of the actuator are driven. Since the worm gear in the gear system is self-locking, the worm, gear one, gear two, and clutch input gear are in a self-locking state with the torsion spring, that is, they do not move. When the driving force increases, the clutch inside the actuator begins to slip, and the charging door can be manually opened / closed.

[0034] Compared with the appendix, this utility model Figure 7 Compared to the original structure shown, it has the following significant advantages:

[0035] (1) Before the improvement of this utility model, the clutch input / output gears rotate around the rotating shaft and the middle plane fits together; after the improvement of this utility model, the clutch input gear and the clutch output shaft cooperate, with the clutch output gear as the rotating shaft center, and then the clutch input / output gears move as a whole with the rotating shaft as the rotation center.

[0036] (2) Compared with the previous structure, this utility model lacks a pair of friction pairs, namely the mating end faces of the clutch input and output teeth, as shown in the attached figure. Figure 7 As shown.

[0037] (3) Appendix Figure 7 The design shown in the diagram, where the clutch input gear and output gear are integrated by a spring, results in poor concentricity of the inner bores. In contrast, the design of this invention features a shaft-hole fit between the clutch input and output gears, ensuring good concentricity and more stable torque provided by the clutch.

[0038] (4) Appendix Figure 7 The spring shown in the diagram has only one cut edge. The spring design of this invention has an additional bend, which ensures more contact surface with the clutch input gear, thus guaranteeing the stability and strength of the spring.

[0039] (5) The clutch input gear of this utility model is an insert design, and the mating part ensures strength and is more reliable, while the original part was a pure plastic part.

[0040] (6) In addition, the present invention eliminates the oil reservoir of the clutch output gear, making the structure simpler.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0042] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A charging port rotary actuator with a new type of spring clutch, characterized in that: The device includes a motor (1), a worm (2), a first gear (3), a second gear (4), a clutch assembly (5), and an output tooth (6). The output end of the motor (1) is connected to and drives the worm (2) to rotate. The worm (2) meshes with the first gear (3). The other end of the first gear (3) meshes with the second gear (4). The other end of the second gear (4) meshes with the clutch assembly (5). The other end of the clutch assembly (5) meshes with the output tooth (6). The output tooth (6) is connected to the charging port and drives the electric opening and closing of the charging port. The clutch assembly (5) includes a clutch input gear (7), a clutch output gear (8), and a torsion spring (9). One end of the torsion spring (9) is bent to form a corner (10). The corner (10) of the torsion spring (9) is interference-fitted with the clutch input gear (7). The inner diameter of the torsion spring (9) is interference-fitted with the cylindrical outer diameter of the clutch output gear (8).

2. The charge port rotary actuator with a new type of spring clutch as claimed in claim 1, characterized in that: The torsion spring (9) is sleeved on the clutch output gear (8), and a clutch input gear (7) is provided above the torsion spring (9). The clutch input gear (7) is sleeved on the clutch output gear (8) and is connected to the clutch output gear (8). The clutch input gear (7) and the clutch output gear (8) are a whole and move around the rotating shaft as the rotation center.

3. The charge port rotary actuator with a new type of spring clutch as claimed in claim 1, characterized in that: The clutch input gear (7) is designed as an insert structure. The clutch input gear (7) includes a plastic body (11) and a metal insert (12). The upper part of the inner wall of the plastic body (11) is embedded with the metal insert (12), and the metal insert (12) is connected to the clutch output gear (8) through the clutch output gear (8).

4. The charge port rotary actuator with a new type of spring clutch as claimed in claim 3, characterized in that: The outer wall of the metal insert (12) is provided with a protrusion, which is connected to the groove on the inner wall of the plastic body (11) through the protrusion.

5. The rotary actuator with a novel spring clutch for charging ports as described in any one of claims 1 to 4, characterized in that: The gear one (3), gear two (4) and clutch assembly (5) are arranged in a U-shaped structure, and the gear two (4), clutch assembly (5) and output gear (6) are arranged in an inverted U-shaped structure.

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