Variable speed electric release device, electric release door lock and automobile

Abstract

The application discloses a variable-speed electric release device, an electric release door lock and an automobile, and belongs to the technical field of automobile accessories. The variable-speed electric release device comprises a supporting piece, a motor, an electric release mechanism and a control lever which are arranged on the supporting piece. The electric release mechanism comprises a first rotating shaft, a first actuator, a second actuator and a transmission structure. The second actuator and the first actuator are arranged in an up-down mode and are respectively rotationally connected to the first rotating shaft. The second actuator can be lifted along the first rotating shaft. A first cam portion and a second cam portion are sequentially arranged on the top of the second actuator from bottom to top. The outer diameter of the first cam portion is larger than that of the second cam portion. The first end of the control lever is abutted against the first cam portion or the second cam portion, and the second end is rotationally connected to a second rotating shaft. The transmission structure is respectively connected to the first actuator and the second actuator. The control lever can be abutted against the first cam portion or the second cam portion. The application takes into account both safety and quick response.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a variable speed electric release device. Background Technology

[0002] Electric release devices are used for the electric opening of side door locks in automobiles. However, existing electric release devices have a dilemma: they cannot simultaneously achieve fast response under normal operating conditions. They require fast response under normal operating conditions, but if they still require fast response under heavy loads, the motor will be damaged. On the other hand, if they require safety, the response speed is slow, resulting in a poor user experience.

[0003] Therefore, there is an urgent need for a variable-speed electric release device to solve the above problems. Summary of the Invention

[0004] The first objective of this invention is to provide a variable-speed electric release device that can balance safety under heavy load conditions and rapid response under normal load conditions.

[0005] The second objective of this invention is to provide an electrically released door lock, which, by incorporating the aforementioned variable-speed electrically released device, can adjust the response speed according to the load size, thereby improving its service life.

[0006] The third objective of this invention is to provide a car that, by incorporating the aforementioned electrically released door lock, enhances the user experience.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A variable-speed electric release device includes a support member and a motor, an electric release mechanism, and a control lever mounted on the support member. The electric release mechanism includes:

[0009] A first pivot is disposed on the support member;

[0010] A first actuator and a second actuator are arranged vertically above and rotatably connected to a first rotating shaft. A motor drives the first actuator to reciprocate, and the second actuator can move up and down along the first rotating shaft. The top of the second actuator has a first cam portion and a second cam portion arranged sequentially from bottom to top. The outer diameter of the first cam portion is larger than the outer diameter of the second cam portion. A first end of a control lever abuts against either the first cam portion or the second cam portion, and a second end of the control lever is rotatably connected to a second rotating shaft.

[0011] A transmission structure is respectively connected to the first actuator and the second actuator;

[0012] When the load applied to the control lever is less than the limit load, the control lever abuts against the first cam portion; when the load applied to the control lever reaches the limit load, the second actuator can descend along the first rotating shaft until the control lever abuts against the second cam portion.

[0013] Optionally, the first actuator has a first cavity at its top, and the inner wall of the first cavity is provided with an internal thread; the first actuator has a second cavity at its bottom, and the outer wall of the second actuator is provided with an external thread; the second actuator and the first actuator are threadedly connected by the external thread and the internal thread.

[0014] Optionally, the second actuator further includes a limiting portion disposed between the first cam portion and the external thread, wherein the outer diameter of the limiting portion is larger than the bottom outer diameter of the first actuator.

[0015] Optionally, the bottom wall of the first cavity is provided with a limiting post and a semi-annular limiting ring surrounding the limiting post and spaced apart from the limiting post; the inner wall of the second cavity is provided with a limiting protrusion; the transmission structure includes a torsion spring, the torsion spring is sleeved on the limiting post, and one end of the torsion spring abuts against the limiting protrusion, and the other end abuts against one end of the limiting ring.

[0016] Optionally, the end of the limiting ring that abuts against the torsion spring is provided with an abutting portion extending away from the limiting post, and the torsion spring abuts against the abutting portion.

[0017] Optionally, the beginning and end of the first cam portion and the second cam portion are coplanar.

[0018] Optionally, the outer wall of the first actuator is provided with a turbine, and the output shaft of the motor is provided with a worm gear that meshes with the turbine.

[0019] An electrically released door lock includes the aforementioned variable-speed electrically released device.

[0020] An automobile includes the aforementioned electrically released door lock.

[0021] The beneficial effects of this invention are as follows:

[0022] In operation, under normal load conditions, the motor drives the first actuator to rotate, which in turn drives the second actuator to rotate under the transmission structure. The second actuator then drives the first and second cam sections to rotate. The motor's driving force is transmitted to the control lever through the first cam section, enabling the control lever to move quickly. When the load reaches its limit, the motor drives the first actuator to rotate, but the transmission structure can no longer drive the second actuator to rotate. At this point, the second actuator remains stationary. Due to the relative motion between the first and second actuators, under the action of the transmission structure, the second actuator descends along the first shaft until the control lever abuts against the second cam section, completing the gear shifting operation. After shifting, the first and second actuators rotate synchronously, thus reducing the speed of the control lever. By adjusting the transmission ratio under different load conditions, a balance can be achieved between rapid response under normal load conditions and safety under extreme load conditions.

[0023] The electric release door lock of the present invention, by setting the above-mentioned variable speed electric release device, can adjust the response speed according to the load size, which is beneficial to improving the service life.

[0024] The present invention, by incorporating the aforementioned electrically released door lock, improves the user experience in the automobile. Attached Figure Description

[0025] Figure 1 This is an exploded view of the variable speed electric release device provided in a specific embodiment of the present invention;

[0026] Figure 2 This is a perspective view of the variable speed electric release device provided in a specific embodiment of the present invention;

[0027] Figure 3 This is a perspective view of the first actuator provided in a specific embodiment of the present invention;

[0028] Figure 4 This is a perspective view of the second actuator from a first-view perspective, provided in a specific embodiment of the present invention;

[0029] Figure 5 This is a perspective view of the second actuator provided in a specific embodiment of the present invention;

[0030] Figure 6 This is a side view of the variable speed electric release device provided in a specific embodiment of the present invention under normal load conditions;

[0031] Figure 7 This is a cross-sectional view of the variable speed electric release device provided in a specific embodiment of the present invention under a normal load condition;

[0032] Figure 8 This is a side view of the variable speed electric release device provided in a specific embodiment of the present invention under extreme load conditions;

[0033] Figure 9 This is a cross-sectional view of the variable speed electric release device provided in a specific embodiment of the present invention under extreme load conditions.

[0034] In the picture:

[0035] 1. Support components;

[0036] 2. Electric release mechanism; 21. First actuating element; 211. First cavity; 212. Limiting post; 213. Limiting ring; 2131. Abutting part; 22. Second actuating element; 221. First cam part; 222. Second cam part; 223. Second cavity; 2231. Limiting protrusion; 224. Limiting part; 23. Transmission structure; 231. Torsion spring;

[0037] 3. Control lever. Detailed Implementation

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0039] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0040] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] This embodiment provides a vehicle including an electrically released door lock to enable the opening of the vehicle's side door. The electrically released door lock includes a variable-speed electrically released device.

[0043] like Figures 1-9 As shown, the variable-speed electric release device includes a support member 1 and a motor (not shown), an electric release mechanism 2, and a control lever 3 mounted on the support member 1. The electric release mechanism 2 includes a first rotating shaft (not shown), a first actuator 21, a second actuator 22, and a transmission structure 23. The first rotating shaft is mounted on the support member 1. The second actuator 22 and the first actuator 21 are arranged vertically and rotatably connected to the first rotating shaft, respectively. The motor can drive the first actuator 21 to reciprocate, and the second actuator 22 can move up and down along the first rotating shaft. The top of the second actuator 22 has a first cam portion 221 and a second cam portion 222 arranged sequentially from bottom to top. The outer diameter of the first cam portion 221 is larger than the outer diameter of the second cam portion 222. The first end of the control lever 3 abuts against the first cam portion 221 or the second cam portion 222, and the second end of the control lever 3 is rotatably connected to the second rotating shaft. The transmission structure 23 is connected to the first actuator 21 and the second actuator 22, respectively. When the load applied to the lever 3 is less than the limit load, the lever 3 abuts against the first cam portion 221. When the load applied to the lever 3 reaches the limit load, the second actuator 22 can descend along the first rotating shaft until the lever 3 abuts against the second cam portion 222.

[0044] When the load is normal, the motor drives the first actuator 21 to rotate, and under the transmission of the transmission structure 23, it drives the second actuator 22 to rotate. The second actuator 22 drives the first cam portion 221 and the first cam portion 222 to rotate. The driving force of the motor is transmitted to the control lever 3 through the first cam portion 221, which enables the control lever 3 to move quickly. When the load is large, the motor drives the first actuator 21 to rotate, and the transmission structure 23 cannot drive the second actuator 22 to rotate. At this time, the second actuator 22 is stationary. Due to the relative movement of the first actuator 21 and the second actuator 22, under the action of the transmission structure 23, the second actuator 22 descends along the first rotating shaft until the control lever 3 abuts against the second cam portion 222, completing the gear shifting operation. After shifting, the first actuator 21 and the second actuator 22 rotate synchronously, which can reduce the speed of the control lever 3. By adjusting the transmission ratio under different load conditions, it is possible to achieve both rapid response under normal load conditions and safety under large load conditions.

[0045] like Figures 3-5 As shown, the first actuator 21 has a first cavity 211 at its top, and the inner wall of the first cavity 211 is provided with internal threads. The second actuator 22 has a second cavity 223 at its bottom, and the outer wall of the second actuator 22 is provided with external threads. The second actuator 22 and the first actuator 21 are connected by external and internal threads. It can be understood that by connecting the first actuator 21 and the second actuator 22 by threads, the second actuator 22 can be raised or lowered relative to the first actuator 21 when the first actuator 21 is rotated.

[0046] Furthermore, the second actuator 22 also includes a limiting portion 224 disposed between the first cam portion 221 and the external thread, the outer diameter of the limiting portion 224 being larger than the bottom outer diameter of the first actuator 21. Specifically, when the second actuator 22 rotates relative to the first actuator 21, after the limiting portion abuts against the top of the first actuator 21, the second actuator 22 can no longer move up or down relative to the first actuator 21.

[0047] like Figures 6-9As shown, the bottom wall of the first cavity 211 is provided with a limiting post 212 and a semi-annular limiting ring 213 surrounding the limiting post 212 and spaced apart from it. The inner wall of the second cavity 223 is provided with a limiting protrusion 2231. The transmission structure 23 includes a torsion spring 231, which is sleeved on the limiting post 212. The first end of the torsion spring 231 abuts against the limiting protrusion 2231, and the second end abuts against one end of the limiting ring 213. In detail, when the load is in a normal state, the first actuator 21 rotates, and the first actuator 21 pushes the second end of the torsion spring 231 through the limiting ring 213. The first end of the torsion spring 231 pushes the limiting protrusion 2231. At this time, the load is insufficient to deform the torsion spring 231. Therefore, the first actuator 21 and the second actuator 22 can rotate synchronously, and the first cam part 221 abuts against the control lever 3. When the load reaches its limit, the torsion spring 231 can no longer drive the second actuator 22 to rotate, and the second actuator 22 remains stationary. As the first actuator 21 rotates, the torsion spring 231 deforms. The output of the first actuator 21 is sufficient to overcome the elastic force of the torsion spring 231, but not enough to overcome the load. The second actuator 22 begins to rotate relative to the first actuator 21. With the cooperation of the external and internal threads, the second actuator 22 will descend along the first rotating shaft, causing the control lever 3 to switch from the first cam part 221 to the second cam part 222, thereby slowing down the rotation speed of the control lever 3.

[0048] To ensure that the limiting ring 213 can reliably drive the second end of the torsion spring 231, the end of the limiting ring 213 that abuts against the torsion spring 231 is provided with an abutting portion 2131 extending in a direction away from the limiting post 212, and the torsion spring 231 abuts against the abutting portion 2131. By providing the abutting portion 2131, the contact area between the limiting ring 213 and the second end of the torsion spring 231 is increased.

[0049] Specifically, the beginning and end of the first cam portion 221 and the second cam portion 222 are coplanar. This facilitates the switching of the control lever 3 between the first cam portion 221 and the second cam portion 222.

[0050] In some optional embodiments, the outer wall of the first actuator 21 is provided with a turbine (not shown), and the output shaft of the motor is provided with a worm gear (not shown) that meshes with the turbine. The motor drives the worm gear to rotate, and through the cooperation of the worm gear and the turbine, the worm gear can drive the first actuator 21 to rotate. Of course, those skilled in the art can set other transmission methods between the first actuator 21 and the motor, which are not limited here.

[0051] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A variable speed electric release device comprising a support (1) and a motor, an electric release mechanism (2), a lever (3) arranged on the support (1), characterized in that, The electric release mechanism (2) comprises: a first rotating shaft arranged on the support (1); a first actuator (21) and a second actuator (22), the second actuator (22) and the first actuator (21) are arranged in an up-down manner, and are respectively rotationally connected to the first rotating shaft, the motor can drive the first actuator (21) to reciprocate, the second actuator (22) can ascend and descend along the first rotating shaft, the top of the second actuator (22) is sequentially provided with a first cam portion (221) and a second cam portion (222) from bottom to top, the outer diameter of the first cam portion (221) is greater than the outer diameter of the second cam portion (222), the first end of the operating rod (3) abuts against the first cam portion (221) or the second cam portion (222), and the second end of the operating rod (3) is rotationally connected to a second rotating shaft; and a transmission structure (23) connected to the first actuator (21) and the second actuator (22) respectively. When the load acting on the operating rod (3) is less than the limit load, the operating rod (3) abuts against the first cam portion (221), and when the load acting on the operating rod (3) reaches the limit load, the second actuator (22) can descend along the first rotating shaft to the operating rod (3) abutting against the second cam portion (222).

2. The variable speed electric release device of claim 1, wherein, The top of the first actuator (21) is provided with a first cavity (211), and the inner wall of the first cavity (211) is provided with an internal thread; the bottom of the second actuator (22) is provided with a second cavity (223), and the outer wall of the second actuator (22) is provided with an external thread; and the second actuator (22) and the first actuator (21) are threadedly connected through the external thread and the internal thread.

3. The variable speed electric release of claim 2, wherein, The second actuator (22) further comprises a limiting portion (224) arranged between the first cam portion (221) and the external thread, and the outer diameter of the limiting portion (224) is greater than the outer diameter of the bottom of the first actuator (21).

4. The variable speed electric release of claim 2, wherein, The bottom wall of the first cavity (211) is provided with a limiting column (212) and a semi-annular limiting ring (213) which is arranged outside the limiting column (212) and is spaced apart from the limiting column (212), the inner wall of the second cavity (223) is provided with a limiting protrusion (2231), and the transmission structure (23) comprises a torsion spring (231), the torsion spring (231) is sleeved on the limiting column (212), one end of the torsion spring (231) abuts against the limiting protrusion (2231), and the other end of the torsion spring (231) abuts against one end of the limiting ring (213).

5. The variable speed electric release of claim 4, wherein, The end of the limiting ring (213) abutting against the torsion spring (231) is provided with an abutting portion (2131) extending away from the limiting column (212), and the torsion spring (231) abuts against the abutting portion (2131).

6. The variable speed electric release of claim 1, wherein, The initial end and the terminal end of the first cam portion (221) and the second cam portion (222) are coplanar.

7. The variable speed electric release device of any one of claims 1-6, wherein, The outer wall of the first actuator (21) is provided with a turbine, and the output shaft of the motor is provided with a worm engaging with the turbine.

8. An electrically released door lock characterized in that The variable speed electric release device of any one of claims 1-7.

9. An automobile characterized by comprising: The electric release door lock of claim 8.

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