An electric actuator housing

Abstract

The utility model discloses an electric actuator shell belongs to actuator technical field, and its technical scheme main points are: including the casing and the metal seat, the casing is used to accommodate actuator, and the metal seat fixedly connected in the casing, and the actuator is installed on the metal seat, and the metal seat is opened with the outside intercommunication's avoidance hole, the utility model discloses can guarantee the part of actuator shell for bearing actuator has the sufficient and reliable structural strength, also can avoid the production cost of shell whole and improve greatly.

Description

Technical Field

[0001] This utility model belongs to the field of actuator technology, and specifically relates to an electric actuator housing. Background Technology

[0002] Actuators are an essential component of automatic control systems. Their function is to receive control signals from the controller, change the magnitude of the controlled medium, and thus maintain the controlled variable at the required value or within a certain range. Actuators can be classified into three main categories according to their energy source: pneumatic, hydraulic, and electric.

[0003] Chinese Patent CN115560118A discloses a manual-electric actuator. Key technical features include a housing and a drive element disposed within the housing. The drive element comprises an electric drive component within the housing and a manual component outside the housing. An intermediate component is fixedly disposed within the housing. The housing comprises an upper housing and a lower housing that are interlocked and fixed together. The manual component is disposed outside the upper housing. An external connecting component is also disposed on the lower housing. The external connecting component passes through the lower housing and is interlocked and fixed to the intermediate component. The drive element also includes an output shaft that passes through the external connecting component and connects to an external valve body. This actuator is a common linear actuator.

[0004] The above technical solution has the following drawbacks: The external connector of the actuator passes through the lower housing and is fastened to the intermediate part (specifically the intermediate housing). The external connector is used to connect the linear stop valve. Therefore, the intermediate housing must first bear the load transmitted from the external connector itself and the load transmitted from the linear stop valve through the external connector. On the other hand, the output shaft must overcome the spring force to push the valve stem down, and the valve stem will exert a reaction force on the output shaft. Since the relevant accessories of the output shaft are installed on the intermediate housing, this force will eventually act on the intermediate housing after being transmitted through the output gear. Therefore, the intermediate housing is in a complex and high-intensity stress environment for a long time. The existing structural strength is difficult to meet the actual use requirements, resulting in insufficient strength and a limited service life of the actuator housing. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an electric actuator housing. The technical problem to be solved by this utility model is: how to ensure that the parts of the housing used to support the actuator have sufficient and reliable structural strength.

[0006] The technical objective of this utility model can be achieved through the following technical solution: an electric actuator housing, including a housing and a metal base, wherein the housing is used to accommodate the actuator, the metal base is fixedly connected inside the housing, the actuator is mounted on the metal base, and the metal base is provided with a clearance hole communicating with the outside.

[0007] In the aforementioned electric actuator housing, the metal base and the housing are integrally injection molded.

[0008] In the aforementioned electric actuator housing, the housing is made of plastic.

[0009] In the aforementioned electric actuator housing, an annular connecting portion for connecting an external valve body is integrally formed on the metal base.

[0010] In the aforementioned electric actuator housing, a connecting cap is rotatably mounted on the annular connecting portion, and the annular connecting portion is connected to the external valve body through the connecting cap.

[0011] In the aforementioned electric actuator housing, a limiting member is provided on the annular connecting portion, the limiting member being used to prevent the connecting cap from disengaging from the annular connecting portion.

[0012] In the aforementioned electric actuator housing, an annular groove is provided on the outer side wall of the annular connecting part, the limiting member includes a retaining spring, the retaining spring is disposed in the annular groove, and a flange is provided on the inner side wall of the connecting cap, the flange abutting against the retaining spring.

[0013] In the aforementioned electric actuator housing, the flange has an inclined surface that abuts against the end of the retaining ring and points towards the annular groove, thereby guiding the retaining ring.

[0014] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0015] 1. The electric actuator housing includes a housing and a metal base. The metal base is fixedly connected to the housing, and the actuator is mounted on the metal base. Since the metal base is made of high-strength metal, it has excellent load-bearing capacity and structural stability. By mounting the actuator on the metal base, the parts of the housing used to support the actuator have sufficient and reliable structural strength, thereby improving the stability and reliability of the overall structure.

[0016] 2. The housing is made of plastic, and the metal base and the housing are integrally injection molded. This not only ensures that the part of the housing that supports the actuator has sufficient and reliable structural strength through the metal base, but also avoids a significant increase in the overall production cost of the housing. Moreover, fixing the metal base and the housing through integral injection molding can effectively simplify the production process and improve production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0018] Figure 2 This is a cross-sectional view of an embodiment;

[0019] Figure 3 This is a partial cross-sectional view of an embodiment;

[0020] Figure 4 for Figure 3 Enlarged view of part A;

[0021] Figure 5 This is a schematic diagram of the structure of the metal base in the embodiment.

[0022] Reference numerals: 1. Housing; 2. Metal base; 3. Actuator; 4. Annular connecting part; 5. Connecting cap; 6. Snap ring; 7. Annular groove; 8. Flange; 9. Inclined surface; 10. Clearance hole. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] An electric actuator housing, such as Figures 1 to 5 As shown, it includes a housing 1 and a metal base 2. The housing 1 is used to house the actuator 3. The actuator 3 is located inside the housing 1. The housing 1 protects the actuator 3, reduces the adverse effects of the external environment on the actuator 3, and ensures the stable operation of the actuator 3.

[0025] The metal base 2 has a clearance hole 10 that communicates with the outside. The metal base 2 is fixedly connected to the housing 1. The actuator 3 is installed on the metal base 2. In this embodiment, the housing 1 is made of plastic material. The metal base 2 and the housing 1 are integrally injection molded. It should be noted that since the cost of plastic material is low, the overall production cost of the housing can be effectively reduced. Also, since plastic material is light, the overall weight of the housing can be effectively reduced.

[0026] It should be noted that in the prior art, the part of the housing used to support the actuator 3 is subjected to dynamic loads (such as vibration) and static loads (such as its own weight) for a long time. This area is prone to damage due to stress concentration, which may lead to the failure of the entire housing. Therefore, it is necessary to strengthen the structural strength of this part. However, if the entire housing is made of high-strength metal to strengthen the structural strength of this part, it will lead to a significant increase in production costs. On the other hand, if a reinforcing structure is added to this part, it will affect the internal space of the housing. To meet the space requirements of the actuator 3, the overall volume of the housing needs to be increased. This will not only increase production costs, but also increase transportation and packaging costs. Based on this, in this embodiment, the actuator 3 is mounted on a metal base 2 made of high-strength metal material. The metal base 2 and the housing 1 are integrally injection molded to ensure that the part of the housing used to support the actuator 3 has sufficient and reliable structural strength, which can effectively resist load impact and avoid a significant increase in production costs.

[0027] Furthermore, since the metal base 2 and the housing 1 are integrally injection molded, the assembly and connection process between the metal base 2 and the housing 1 is eliminated, the production process is simplified, and the production efficiency is significantly improved.

[0028] Alternatively, the metal base 2 and the housing 1 can be fixedly connected by welding.

[0029] An annular connecting part 4 for connecting to an external valve body is integrally formed on the metal seat 2, which can effectively ensure structural strength and withstand greater load. Compared with the prior art, where the annular connecting part 4 and the metal seat 2 are separate and connected by riveting, snap-fit ​​or other methods, the integrated structure of the metal seat 2 and the annular connecting part 4 is more stable and reliable. It avoids the problem of wear on the connection parts caused by long-term use in the prior art, and even the risk of shaking or connection failure due to wear.

[0030] A connecting cap 5 is rotatably mounted on the annular connecting part 4. The annular connecting part 4 is connected to the external valve body through the connecting cap 5. Specifically, the connecting cap 5 is threadedly connected to the external valve body. A limiting element is provided on the annular connecting part 4 to prevent the connecting cap 5 from disengaging from the annular connecting part 4.

[0031] It should be noted that since the connecting cap 5 can rotate relative to the annular connecting part 4, the operation of threading the connecting cap 5 to the external valve body is simpler and more convenient, which can effectively improve the assembly efficiency.

[0032] In this embodiment, the limiting component includes a retaining spring 6. An annular groove 7 is provided on the outer side wall of the annular connecting part 4, and the retaining spring 6 is disposed in the annular groove 7. A flange 8 is provided on the inner side wall of the connecting cap 5. The flange 8 abuts against the retaining spring 6. Specifically, the flange 8 has an inclined surface 9, which abuts against the end of the retaining spring 6. This achieves the limiting of the connecting cap 5 along the axial direction of the retaining spring 6, which does not affect the rotation of the connecting cap 5 relative to the annular connecting part 4, and also restricts the connecting cap 5 from detaching from the annular connecting part 4. As another option, the limiting component includes a limiting ring, which is threaded to the outer side wall of the annular connecting part 4. The limiting ring abuts against the inclined surface 9 of the flange 8 to restrict the connecting cap 5 from detaching from the annular connecting part 4.

[0033] The inclined surface 9 points to the annular groove 7. The inclined surface 9 can guide the snap ring 6. When installing the snap ring 6, the snap ring 6 is placed in the connecting cap 5 and pressure is continuously applied. Through the guiding effect of the inclined surface 9, the snap ring 6 enters the annular groove 7 along the inclined surface 9, which makes the installation of the snap ring 6 more convenient and quick, effectively reducing the assembly difficulty and improving production efficiency.

[0034] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A housing for an electric actuator, characterized in that: It includes a housing (1) and a metal base (2). The housing (1) is used to accommodate the actuator (3). The metal base (2) is fixedly connected inside the housing (1). The actuator (3) is mounted on the metal base (2). The metal base (2) has a clearance hole (10) that communicates with the outside.

2. The electric actuator housing according to claim 1, characterized in that: The metal base (2) and the housing (1) are integrally injection molded.

3. The electric actuator housing according to claim 2, characterized in that: The housing (1) is made of plastic.

4. The electric actuator housing according to any one of claims 1, 2, or 3, characterized in that: An annular connecting portion (4) for connecting an external valve body is integrally formed on the metal seat (2).

5. The electric actuator housing according to claim 4, characterized in that: A connecting cap (5) is rotatably provided on the annular connecting part (4), and the annular connecting part (4) is connected to the external valve body through the connecting cap (5).

6. The electric actuator housing according to claim 5, characterized in that: A limiting member is provided on the annular connecting part (4), and the limiting member is used to restrict the connecting cap (5) from disengaging from the annular connecting part (4).

7. The electric actuator housing according to claim 6, characterized in that: The outer side wall of the annular connecting part (4) is provided with an annular groove (7), the limiting member includes a retaining spring (6), the retaining spring (6) is disposed in the annular groove (7), the inner side wall of the connecting cap (5) is provided with a flange (8), the flange (8) abuts against the retaining spring (6).

8. The electric actuator housing according to claim 7, characterized in that: The flange (8) has an inclined surface (9) that abuts against the end of the retaining ring (6) and points to the annular groove (7). The inclined surface (9) can guide the retaining ring (6).

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