Actuator capable of automatically resetting

Abstract

The utility model relates to an automatic reset actuator which comprises a shell assembly, a driving piece is installed in the shell assembly, the output end of the driving piece is connected with a transmission assembly, the transmission assembly is connected with a screw rod, the screw rod is sleeved with a first baffle and a pull rod, the first baffle and the screw rod are sleeved with first springs, and the first springs are connected with the pull rod. A first baffle and a first spring are sleeved on the pull rod, one end of the first spring abuts against the first baffle, a second baffle and a second spring are sleeved on the pull rod, one end of the second spring abuts against the second baffle, and a positioning protrusion is arranged on the shell assembly. The first baffle and the second baffle abut against the two ends of the positioning protrusion respectively. The utility model has the beneficial effects of compact structure, strong reliability and strong automatic control capability.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to an actuator capable of automatic reset. Background Art

[0002] Actuators, also known as vehicle locking devices, currently exist on the market. Some actuators extend and stop their levers in the extended position when power is applied in the forward direction; they retract and stop in the retracted position when power is applied in the reverse direction. Other actuators maintain their levers in the extended position, retracting when power is applied, and automatically returning to the extended position when power is removed. An actuator is needed that can maintain its initial position when power is not applied. Summary of the Invention

[0003] The purpose of the utility model is to provide an automatic reset actuator with compact structure, high reliability and strong automation control capability.

[0004] An automatically reset actuator includes a housing assembly, a driving member is installed in the housing assembly, the output end of the driving member is connected to a transmission assembly, the transmission assembly is connected to a screw, a first baffle and a pull rod are sleeved on the screw, the first baffle and the screw are sleeved with a first spring, one end of the first spring abuts against the first baffle, a second baffle and a second spring are sleeved on the pull rod, one end of the second spring abuts against the second baffle, a positioning protrusion is provided on the housing assembly, and when the actuator is in the initial position, the first baffle and the second baffle respectively abut against the two ends of the positioning protrusion.

[0005] In the above scheme, by integrating the driving member, transmission assembly, screw, etc. into a housing assembly, the design is compact and space-saving. The driving member drives the transmission assembly to move, and the transmission assembly can drive the screw to rotate. The rotation of the screw can drive the pull rod to extend or retract. When the pull rod needs to be extended, the screw drives the pull rod to extend, and the second baffle moves synchronously and compresses the second spring, so that the pull rod performs the extension action. After the power is turned on, the second spring acts on the second baffle, so that the second baffle automatically resets. When the second baffle abuts the positioning protrusion, it indicates that the pull rod has returned to its initial position. When the pull rod needs to be retracted, the screw drives the pull rod to retract, and the first baffle moves synchronously and compresses the first spring, so that the pull rod performs the retraction action. After the power is turned on, the first spring acts on the first baffle, so that the first baffle automatically resets. When the first baffle abuts the positioning protrusion structure, it indicates that the pull rod has returned to its initial position. By using the first and second springs as the reset power, the actuator can reliably return to its initial position even in the case of unstable power supply or power outage.

[0006] Furthermore, the shell assembly includes a first shell and a second shell that are symmetrically arranged, the first shell cover is arranged on the second shell, the second shell is provided with a sliding groove, overlapping parts are provided on both sides of the sliding groove, a groove is opened in the sliding groove, and step parts are formed on both sides of the groove.

[0007] In the above scheme, the first shell and the second shell are symmetrically arranged, and the structures of the first shell and the second shell are the same, so the overall structure is simple and convenient for processing and installation. The sliding groove and overlapping part set on the second shell are used to support and guide the movement of the first baffle and the second baffle, and the groove in the sliding groove and the step parts on both sides of the groove are used to support and guide the movement of the pull rod.

[0008] Furthermore, the two positioning protrusions are respectively arranged on the overlapping portions on both sides of the sliding groove.

[0009] In the above solution, the positioning protrusions provided on the overlapping portions on both sides of the sliding groove are the initial positioning positions, which are used to ensure that the positions of the first baffle and the second baffle are fixed when they return to the initial positions.

[0010] Furthermore, the first baffle includes a first rectangular body, the first rectangular body is provided with a convex shaft and a first convex structure, two first convex structures are overlapped on the overlapping portion, and the convex shaft is passed through the first spring.

[0011] In the above scheme, the first protrusion structure is overlapped on the overlapping part to ensure the stability of the position of the first baffle during the movement, so as to ensure that the pull rod can be stably retracted. Since the diameter of the screw is small, the convex shaft is passed through the first spring, so that when the pull rod is retracted, the first baffle can accurately drive the first spring to contract, and can also ensure that the first baffle is reset under the action of the first spring.

[0012] Furthermore, the second baffle includes a second rectangular body, and second protruding structures are provided at both ends of the second rectangular body, and the second protruding structures are movably overlapped on the overlapping portion.

[0013] In the above solution, the second protrusion structure is overlapped on the overlapped portion to ensure the position stability of the second baffle during movement, and the second rectangular body is sleeved on the pull rod to ensure that the second baffle moves when the pull rod is extended.

[0014] Furthermore, the pull rod includes a head and a rod, a thread is provided in the rod, and guide blocks are provided on both sides of the head, and the guide blocks are inserted into the groove.

[0015] In the above scheme, a thread is provided inside the rod, which can cooperate with the screw to realize the telescopic movement of the pull rod. The guide block is passed through the groove, providing a precise guiding mechanism to ensure that the pull rod moves smoothly along the predetermined path during movement, reducing deviation and vibration.

[0016] Furthermore, a waterproof ring is sleeved on one end of the rod away from the head, and the waterproof ring is clamped in the shell assembly.

[0017] In the above solution, a waterproof ring is sleeved on the rod portion, and the waterproof ring is clamped on one end of the shell assembly, so that the waterproofness of the interior of the shell assembly can be ensured and the overall structure is compact.

[0018] Furthermore, the transmission assembly includes a first transmission gear and a second transmission gear, the first transmission gear is connected to the output end of the driving member, the second transmission gear is connected to the screw, and the first transmission gear and the second transmission gear are meshed and connected.

[0019] In the above scheme, the output power of the driving member can be accurately transmitted to the screw through the engagement of the first transmission gear and the second transmission gear, ensuring the accuracy and reliability of power transmission, and having low maintenance requirements. It is suitable for long-term continuous operation. Gear transmission is usually small in size and occupies little space, which helps to achieve a compact design of the actuator.

[0020] The present invention provides an automatic reset actuator with the advantageous effects of a compact structure, high reliability, and strong automated control capabilities. By integrating a drive member, a transmission assembly, and a screw into a single housing assembly, the design is compact and space-saving. The drive member drives the transmission assembly, which in turn drives the screw to rotate. The screw rotation drives the pull rod to extend or retract. When the pull rod needs to extend, the screw drives the pull rod to extend, and a second baffle moves synchronously and compresses a second spring, causing the pull rod to extend. After power is turned off, the second spring acts on the second baffle, causing the second baffle to automatically reset. When the second baffle abuts a positioning protrusion, the pull rod returns to its initial position. When the pull rod needs to retract, the screw drives the pull rod to retract, and the first baffle moves synchronously and compresses the first spring, causing the pull rod to retract. After power is turned off, the first spring acts on the first baffle, causing the first baffle to automatically reset. When the first baffle abuts a positioning protrusion, the pull rod returns to its initial position. By using the first and second springs as reset forces, the actuator can reliably return to its initial position even in the event of unstable power or power outages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of an automatically reset actuator housing assembly according to an embodiment.

[0022] Figure 2 Schematic diagram of the internal structure of an automatic reset actuator according to an embodiment.

[0023] Figure 3Schematic diagram of a screw, a first baffle, a second baffle and a positioning protrusion according to an embodiment.

[0024] Figure 4 Schematic diagram of the pull rod structure of an embodiment.

[0025] Explanation of the accompanying drawings: 100, housing assembly; 110, first housing; 120, second housing; 1, driving member; 2, transmission assembly; 21, first transmission gear; 22, second transmission gear; 3, screw; 4, first baffle; 41, first rectangular body; 42, convex shaft; 43, first protruding structure; 5, pull rod; 51, head; 52, rod; 6, first spring; 7, second baffle; 71, second rectangular body; 72, second protruding structure; 8, second spring; 9, positioning protrusion; 10, overlapping portion; 11, groove; 12, step portion; 13, guide block; 14 waterproof ring. DETAILED DESCRIPTION

[0026] The following is a further detailed description of an automatic reset actuator of the present invention in conjunction with specific embodiments and drawings.

[0027] like Figures 1 to 3 As shown in the figure, in a preferred embodiment, an automatic reset actuator of the present invention includes a housing assembly 100, in which a driver 1 is mounted. The output end of the driver 1 is connected to a transmission assembly 2, which is connected to a screw 3. A first baffle 4 and a pull rod 5 are sleeved on the screw 3. A first spring 6 is sleeved on the first baffle 4 and the screw 3, one end of the first spring 6 abuts the first baffle 4. A second baffle 7 and a second spring 8 are sleeved on the pull rod 5, one end of the second spring 8 abuts the second baffle 7. A positioning protrusion 9 is provided on the housing assembly 100. When the actuator is in the initial position, the first baffle 4 and the second baffle 7 abut the ends of the positioning protrusion 9, respectively. By integrating the driver 1, transmission assembly 2, screw 3, etc. into a single housing assembly 100, a compact design is achieved, saving space.

[0028] When the second baffle plate 7 abuts against the positioning protrusion 9, it indicates that the pull rod 5 has returned to its initial position.

[0029] like Figures 1 to 3 As shown, in some embodiments, the housing assembly 100 includes a symmetrically arranged first housing 110 and a second housing 120, the first housing 110 being covered on the second housing 120, the second housing 120 being provided with a sliding groove, overlapping portions 10 being provided on both sides of the sliding groove, a groove 11 being provided in the sliding groove, and step portions 12 being formed on both sides of the groove 11. The first housing 110 and the second housing 120 are symmetrically arranged, and the first housing 110 and the second housing 120 have the same structure, so that the overall structure is simple and convenient for processing and installation. The sliding groove and overlapping portion 10 provided on the second housing 120 are used to support and guide the movement of the first baffle 4 and the second baffle 7, and the groove 11 in the sliding groove and the step portions 12 on both sides of the groove 11 are used to support and guide the movement of the pull rod 5.

[0030] like Figure 2 and Figure 3 As shown, in some embodiments, two positioning protrusions are respectively provided on the overlapping portions 10 on both sides of the sliding groove. The positioning protrusions provided on the overlapping portions 10 on both sides of the sliding groove are the initial positioning positions, which are used to ensure that the first baffle 4 and the second baffle 7 are fixed in position when they return to the initial positions.

[0031] like Figure 2 and Figure 3As shown, in some embodiments, the first baffle 4 includes a first rectangular body 41, on which a protruding shaft 42 and a first protruding structure 43 are provided. The two first protruding structures 43 overlap on the overlapping portion 10, and the protruding shaft 42 is passed through the first spring 6. The first protruding structure 43 overlaps on the overlapping portion 10 to ensure the position stability of the first baffle 4 during movement, thereby ensuring that the pull rod 5 can be stably retracted. Due to the small diameter of the screw rod 3, the protruding shaft 42 passes through the first spring 6. In this way, when the pull rod 5 retracts, the first baffle 4 can accurately drive the first spring 6 to contract, and can also ensure that the first baffle 4 is reset under the action of the first spring 6.

[0032] like Figure 2 and Figure 3 As shown, in some embodiments, the second baffle 7 includes a second rectangular body 71, with second protrusions 72 provided at both ends of the second rectangular body 71. The second protrusions 72 are movably overlapped on the overlapping portion 10. The overlap of the second protrusions 72 on the overlapping portion 10 is used to ensure the position stability of the second baffle 7 during movement. The second rectangular body 71 is sleeved on the pull rod 5 to ensure that the second baffle 7 moves when the pull rod 5 is extended.

[0033] like Figure 2 and Figure 4 As shown, in some embodiments, the pull rod 5 includes a head 51 and a stem 52. The stem 52 is provided with threads. Guide blocks 13 are provided on both sides of the head 51. The guide blocks 13 are inserted into the groove 11. The stem 52 is provided with threads, which can cooperate with the screw 3 to achieve the extension and retraction of the pull rod 5. The guide blocks 13 are inserted into the groove 11, providing a precise guiding mechanism to ensure that the pull rod 5 moves smoothly along the predetermined path during movement, reducing deviation and vibration.

[0034] like Figure 2 and Figure 3 As shown, in some embodiments, a waterproof ring 14 is provided on one end of the rod 52 away from the head 51, and the waterproof ring 14 is clamped in the housing assembly 100. The waterproof ring 14 is provided on the rod 52 and clamped in one end of the housing assembly 100, thereby ensuring the waterproofness of the interior of the housing assembly 100 and making the overall structure compact.

[0035] like Figure 2 and Figure 3As shown, in some embodiments, the transmission assembly 2 includes a first transmission gear 21 and a second transmission gear 22. The first transmission gear 21 is connected to the output end of the driving member 1, and the second transmission gear 22 is connected to the screw 3. The first transmission gear 21 and the second transmission gear 22 are meshed and connected. Through the meshing of the first transmission gear 21 and the second transmission gear 22, the output power of the driving member 1 can be accurately transmitted to the screw 3, ensuring the accuracy and reliability of power transmission. It also has low maintenance requirements and is suitable for long-term continuous operation. Gear transmission is generally small in size and occupies less space, which helps to achieve a compact design of the actuator.

[0036] The utility model provides an automatic reset actuator working principle and process. When the pull rod 5 needs to be extended, the screw rod 3 drives the pull rod 5 to extend, and the second baffle 7 moves synchronously and compresses the second spring 8, so that the pull rod 5 performs the extension action. After the power is turned on, the second spring 8 acts on the second baffle 7, so that the second baffle 7 automatically resets. When the second baffle 7 abuts against the positioning protrusion 9, it indicates that the pull rod 5 returns to the initial position; when the pull rod 5 needs to be retracted, the screw rod 3 drives the pull rod 5 to retract, and the first baffle 4 moves synchronously and compresses the first spring 6, so that the pull rod 5 performs the retraction action. After the power is turned on, the first spring 6 acts on the first baffle 4, so that the first baffle 4 automatically resets.

[0037] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. An automatic reset actuator, characterized in that: It includes a shell assembly, in which a driving member is installed, the output end of the driving member is connected to a transmission assembly, the transmission assembly is connected to a screw, a first baffle and a pull rod are provided on the screw, the first baffle and the screw are provided with a first spring, one end of the first spring abuts against the first baffle, the pull rod is provided with a second baffle and a second spring, one end of the second spring abuts against the second baffle, a positioning protrusion is provided on the shell assembly, and when the actuator is in the initial position, the first baffle and the second baffle abut against the two ends of the positioning protrusion respectively.

2. The automatic reset actuator according to claim 1, characterized in that: The shell assembly includes a first shell and a second shell that are symmetrically arranged. The first shell cover is arranged on the second shell. The second shell is provided with a sliding groove. Both sides of the sliding groove are provided with overlapping parts. A groove is opened in the sliding groove. Both sides of the groove are formed with step parts.

3. The automatic reset actuator according to claim 2, characterized in that: The two positioning protrusions are respectively arranged on the overlapping parts on both sides of the sliding groove.

4. The automatic reset actuator according to claim 2, characterized in that: The first baffle includes a first rectangular body, the first rectangular body is provided with a convex shaft and a first convex structure, two first convex structures are overlapped on the overlap portion, and the convex shaft is passed through the first spring.

5. The automatic reset actuator according to claim 2, characterized in that: The second baffle includes a second rectangular body. Two ends of the second rectangular body are provided with second protruding structures. The second protruding structures are movably overlapped on the overlapping portion.

6. The automatic reset actuator according to claim 2, characterized in that: The pull rod comprises a head and a rod, a thread is arranged in the rod, and guide blocks are arranged on both sides of the head, and the guide blocks are inserted into the groove.

7. The automatic reset actuator according to claim 6, characterized in that: One end of the rod away from the head is sleeved with a waterproof ring, and the waterproof ring is clamped in the shell assembly.

8. The automatic reset actuator according to claim 1, characterized in that: The transmission assembly includes a first transmission gear and a second transmission gear, the first transmission gear is connected to the output end of the driving member, the second transmission gear is connected to the screw, and the first transmission gear and the second transmission gear are meshed and connected.

Images