Manual switch device for electric actuators

Abstract

The utility model discloses a kind of manual switch devices of electric actuator, belong to electric actuator technical field, a kind of manual switch devices of electric actuator, including shell fixed position, the inside sliding connection of shell fixed position has fixed part, the inside sliding connection of fixed part has manual button, the top of fixed part is clamped with shell hand wheel, reset spring one is arranged between fixed part and shell fixed position, the bottom of shell fixed position is provided with profiled part, it can effectively solve the problem that traditional electric actuator manual switch device structure is complex, switching operation is tedious, need to be assisted with special tool and easy to appear jamming phenomenon, lead to operation efficiency is low, easy to damage equipment, can quickly realize manual and electric mode switching, and switching process is smooth and stable, compact structure manual switch device, to improve the operation convenience and reliability of electric actuator under emergency.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator technology, and more specifically, to a manual switch device for an electric actuator. Background Technology

[0002] Currently, electric actuators are widely used in industrial automation control, primarily for opening and closing valves and other components via electric drive. However, in practical applications, electric actuators often fail to function properly in special circumstances such as sudden power outages, motor failures, or control system malfunctions. In such cases, manual operation is required to ensure emergency start / stop or status adjustment of the equipment.

[0003] Based on the above, the inventors have discovered that traditional manual switching devices for electric actuators generally suffer from complex structures and cumbersome switching operations. They typically require special tools to switch to manual mode, and jamming is prone to occur during the switching process. This not only affects operational efficiency but may also damage the equipment due to improper operation. Therefore, in view of this, the inventors have researched and improved the existing structure to provide a manual switching device for electric actuators, aiming to achieve a more practical purpose. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a manual switch device for electric actuators. It can effectively solve the problems of complex structure, cumbersome switching operation, need for special tools, and easy jamming of traditional manual switch devices for electric actuators, resulting in low operating efficiency and easy damage to equipment. The manual switch device can quickly realize the switching between manual and electric modes, and the switching process is smooth and stable. It is also compact in structure, thereby improving the convenience and reliability of electric actuator operation in emergency situations.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A manual switch device for an electric actuator includes a housing fixing position, a fixing member slidably connected inside the housing fixing position, a manual button slidably connected inside the fixing member, a housing handwheel snapped onto the top of the fixing member, a first return spring disposed between the fixing member and the housing fixing position, a shaped part disposed at the bottom of the housing fixing position, the top end of the shaped part extending into the interior of the fixing member and snapping onto the bottom of the manual button, a second return spring sleeved on the outer periphery of the extended end of the shaped part, an injection-molded gear fixedly mounted at the bottom end of the shaped part, and a positioning spring mounted on the outer periphery of the middle part of the shaped part.

[0009] Furthermore, the fixing member is composed of a snap-fit ​​section, a transition section and an extension section, and the reset spring is sleeved on the outer periphery of the transition section of the fixing member, with its top and bottom ends respectively between the bottom of the snap-fit ​​section of the fixing member and the inside of the housing fixing position.

[0010] Furthermore, the manual button consists of a pressing part and a locking part. Two protrusions are fixedly connected to the outer periphery of the pressing part of the manual button. The outer casing handwheel is in contact with the top of the protrusions. The locking part of the manual button is engaged with the top of the extension end of the irregular part.

[0011] Furthermore, the fixing member has an upper mounting groove and a lower mounting groove arranged sequentially from top to bottom inside. The top and bottom ends of the second reset spring are respectively fixedly connected to the bottom end of the manual button pressing part and the bottom of the upper mounting groove of the fixing member.

[0012] Furthermore, the outer periphery of the extension of the fastener has two openings that communicate with the lower mounting groove, and the two openings are symmetrically arranged.

[0013] Furthermore, two bayonets are provided at the bottom of the housing fixing position, and two mutually symmetrical limiting blocks are fixedly connected to the outer periphery of the middle part of the irregular part, and the limiting blocks are engaged with the corresponding bayonets.

[0014] Furthermore, the outer periphery of the transition section of the fastener is sealed to the inner wall of the housing fixing position by a sealing ring one, and the inner wall of the extension section of the fastener is sealed to the outer periphery of the middle part of the irregular part by a sealing ring two.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] This design, through the coordinated design of a manual button, a fixing component, a special-shaped component, and two return springs, enables rapid switching between manual and electric modes. When manual operation is required, the manual button is pressed down, triggering the second return spring. This causes the special-shaped component, positioning spring, and injection-molded gear to move downwards along the hole inside the fixing component. Once in position, the positioning spring pops out on both sides, its protruding parts locking into the opening of the fixing component. This compresses the spring on the manual button, preventing the positioning spring and injection-molded gear on the special-shaped component from moving up or down. Simultaneously, the injection-molded gear engages with the transmission gear, establishing the manual mode. Rotating the outer casing handwheel left or right drives the transmission mechanism. To switch from manual to electric mode, the outer casing handwheel is pressed down, compressing the return spring. The fixing component moves downwards along with it. When pressed to the end, the positioning spring retracts under the downward force. Releasing the outer casing handwheel causes the manual button to trigger the positioning spring and injection-molded gear on the special-shaped component to rebound and reset under the compression of the spring. The handwheel also resets under the action of the first return spring, and the injection-molded gear disengages from the transmission gear. The entire switching process requires no special tools and is easy to operate. At the same time, each component adopts a modular design, which is compact, occupies little space, and is easy to install and maintain, reducing the cost of use in the later stage. It significantly improves the ease of operation and reliability of electric actuators in emergency situations, and meets the requirements of industrial automation control for equipment stability and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model;

[0019] Figure 2 This is a top view schematic diagram of the electric state structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure at the CC position;

[0021] Figure 4 For the present utility model Figure 2 Schematic diagram of the cross-sectional structure at the DD position;

[0022] Figure 5 This is a top view of the manual mode structure of this utility model;

[0023] Figure 6 For the present utility model Figure 5 Schematic diagram of the cross-sectional structure at position AA;

[0024] Figure 7 For the present utility model Figure 5 Schematic diagram of the cross-sectional structure at the BB position.

[0025] Explanation of the labels in the diagram:

[0026] 1. Housing fixing position; 101. Bayonet;

[0027] 2. Fasteners; 201. Opening;

[0028] 3. Manual button; 301. Raised surface;

[0029] 4. Casing handwheel;

[0030] 5. Return spring one;

[0031] 6. Irregularly shaped parts; 601. Limiting blocks;

[0032] 7. Two return springs;

[0033] 8. Injection molded gears;

[0034] 9. Positioning spring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0036] Example:

[0037] Please see Figures 1-7 A manual switch device for an electric actuator includes a housing fixing position 1, a fixing member 2 slidably connected inside the housing fixing position 1, a manual button 3 slidably connected inside the fixing member 2, a housing handwheel 4 snapped onto the top of the fixing member 2, a return spring 5 disposed between the fixing member 2 and the housing fixing position 1, a shaped member 6 disposed at the bottom of the housing fixing position 1, the top end of the shaped member 6 extending into the interior of the fixing member 2 and snapping onto the bottom of the manual button 3, a return spring 7 sleeved on the outer periphery of the extended end of the shaped member 6, an injection-molded gear 8 fixedly installed at the bottom end of the shaped member 6, and a positioning spring 9 installed on the outer periphery of the middle part of the shaped member 6.

[0038] See Figure 3 and Figure 7 The fixing member 2 consists of a snap-fit ​​section, a transition section and an extension section. The return spring 5 is sleeved on the outer periphery of the transition section of the fixing member 2, and its top and bottom ends are respectively between the bottom of the snap-fit ​​section of the fixing member 2 and the inside of the housing fixing member 1.

[0039] See Figure 3 and Figure 6The manual button 3 consists of a pressing part and a locking part. Two protrusions 301 are fixedly connected to the outer periphery of the pressing part of the manual button 3. The outer casing handwheel 4 is in contact with the top of the protrusions 301. The locking part of the manual button 3 is engaged with the top of the extension end of the irregular part 6.

[0040] See Figure 3 The inside of the fixing part 2 is provided with an upper mounting groove and a lower mounting groove from top to bottom. The top and bottom of the reset spring 2 7 are respectively fixedly connected to the bottom of the pressing part of the manual button 3 and the bottom of the upper mounting groove of the fixing part 2.

[0041] See Figure 1 , Figure 4 and Figure 7 The outer periphery of the extension of the fastener 2 has two openings 201 that communicate with the lower mounting groove, and the two openings 201 are symmetrically arranged.

[0042] See Figure 1 and Figure 3 Two bayonet slots 101 are provided at the bottom of the housing fixing position 1. Two mutually symmetrical limiting blocks 601 are fixedly connected to the outer periphery of the middle part of the irregular part 6. The limiting blocks 601 are engaged with the corresponding bayonet slots 101.

[0043] See Figure 3 The outer periphery of the transition section of the fixing member 2 is sealed to the inner wall of the housing fixing member 1 by a sealing ring 1. The inner wall of the extension section of the fixing member 2 is sealed to the outer periphery of the middle part of the irregular part 6 by a sealing ring 2. In use, the setting of sealing ring 1 and sealing ring 2 enhances the sealing performance of the device, effectively preventing dust, moisture and other impurities from entering the interior and affecting the operation of the components, thus extending the service life of the device.

[0044] When in use: For manual operation, first press down on the manual button 3. This resets the second spring 7, causing the irregular part 6, positioning spring 9, and injection gear 8 to move downwards along the hole inside the fixing part 2. Once in position, the positioning spring 9 pops out on both sides, its protruding parts locking into the opening 201 on the fixing part 2. This compresses the second spring 7, preventing the irregular part 6, positioning spring 9, and injection gear 8 from moving up or down. Simultaneously, the injection gear 8 engages with the transmission gear, forming the manual mode. Rotating the outer casing handwheel 4 left or right drives the transmission mechanism. When switching to electric mode, press down on the outer casing handwheel 4, compressing the first spring 5. The fixing part 2 moves downwards along with it. When pressed down to the end, the positioning spring 9 retracts under the pressure. Releasing the pressure on the outer casing handwheel 4 causes the manual button 3 to cause the irregular part 6, positioning spring 9, and injection gear 8 to rebound and reset under the action of the second spring 7. The outer casing handwheel 4 also resets under the action of the first spring 5, and the injection gear 8 disengages from the transmission gear. The entire switching process requires no special tools, making operation convenient. The elastic action of the return spring 5 and the positioning spring 9 effectively prevents jamming during switching, improving operational smoothness. Furthermore, the modular design of each component results in a compact structure, small footprint, easy installation and maintenance, and reduced long-term operating costs. This design significantly improves the ease of operation and reliability of the electric actuator in emergency situations, meeting the requirements of industrial automation control for equipment stability and efficiency.

[0045] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A manual switching device for an electric actuator, comprising a housing fixing position (1), characterized in that: A fixing member (2) is slidably connected inside the housing fixing position (1). A manual button (3) is slidably connected inside the fixing member (2). A housing handwheel (4) is snapped onto the top of the fixing member (2). A return spring (5) is provided between the fixing member (2) and the housing fixing position (1). A shaped part (6) is provided at the bottom of the housing fixing position (1). The top of the shaped part (6) extends into the interior of the fixing member (2) and snaps onto the bottom of the manual button (3). A return spring (7) is sleeved on the outer periphery of the extended end of the shaped part (6). An injection-molded gear (8) is fixedly installed at the bottom end of the shaped part (6). A positioning spring (9) is installed on the outer periphery of the middle part of the shaped part (6).

2. The manual switching device for an electric actuator according to claim 1, characterized in that: The fixing member (2) consists of a snap-fit ​​section, a transition section and an extension section. The reset spring (5) is sleeved on the outer periphery of the transition section of the fixing member (2), and its top and bottom ends are respectively between the bottom of the snap-fit ​​section of the fixing member (2) and the inside of the housing fixing position (1).

3. The manual switching device for an electric actuator according to claim 1, characterized in that: The manual button (3) consists of a pressing part and a locking part. Two protrusions (301) are fixedly connected to the outer periphery of the pressing part of the manual button (3). The outer shell handwheel (4) is in contact with the top of the protrusions (301). The locking part of the manual button (3) is engaged with the top of the extension end of the irregular part (6).

4. The manual switching device for an electric actuator according to claim 1, characterized in that: The fixing member (2) has an upper mounting groove and a lower mounting groove arranged from top to bottom. The top and bottom ends of the reset spring (7) are respectively fixedly connected to the bottom end of the pressing part of the manual button (3) and the bottom of the upper mounting groove of the fixing member (2).

5. The manual switching device for an electric actuator according to claim 1, characterized in that: The extension of the fastener (2) has two openings (201) on its outer periphery that communicate with the lower mounting groove, and the two openings (201) are symmetrically arranged.

6. The manual switching device for an electric actuator according to claim 1, characterized in that: The bottom of the housing fixing position (1) has two bayonet slots (101), and the outer periphery of the middle part of the irregular part (6) is fixedly connected to two mutually symmetrical limiting blocks (601), and the limiting blocks (601) are engaged with the corresponding bayonet slots (101).

7. The manual switching device for an electric actuator according to claim 1, characterized in that: The outer periphery of the transition section of the fastener (2) is sealed to the inner wall of the housing fixing position (1) by a sealing ring one, and the inner wall of the extension section of the fastener (2) is sealed to the outer periphery of the middle part of the irregular part (6) by a sealing ring two.

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