An actuator

Abstract

The utility model provides an executor for with the connection section of valve connection, the outer wall of connection section is equipped with the step and the connecting groove who is located the step top, the executor includes executor body, locking piece and pin, the lower end of executor body is used for with the step of connection section abuts, is equipped with the movable slot of the radial movement of pin on the executor body, locking piece can be axially mobile and is equipped with the outside of executor body, pin is equipped with movable slot in the executor body, the inner wall of locking piece is equipped with control track, and the end of pin is limited in control track, when the lower end of executor body and step abut and depress locking piece, control track guides pin and is along the radial movement and is clamped into connecting groove, through depressing or lifting the linear motion of locking piece, drives pin to produce radial movement to realize the quick connection and separation between executor and valve.

Description

Technical Field

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

[0002] Electric actuators are key drive devices for controlling the opening and closing of valves in HVAC systems, and their reliability directly affects the stable operation of the entire system. The connection method between the actuator and the valve is of paramount importance.

[0003] Currently, the actuator 100 and valve 200 are generally connected by a threaded connection, such as... Figure 1 As shown, the locking nut 300 on the actuator 100 is manually rotated to engage with the external thread on the valve 200 to achieve fixation.

[0004] If the locking nut 300 is not tightened sufficiently during installation, it may loosen under long-term operation and vibration conditions, leading to failure of the connection between the actuator and the valve. However, if it is over-tightened to prevent loosening, it will make disassembly difficult. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a reliable and labor-saving actuator.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An actuator for connection to a valve connection section, the outer wall of the connection section having a step and a connection groove located above the step, the actuator comprising: The actuator body has a lower end for abutting against the step of the connecting section, and the actuator body has a movable groove for the radial movement of the pin. A locking element, which is axially movable and sleeved on the outside of the actuator body; A pin, wherein the pin passes through a movable groove in the actuator body; The inner wall of the locking member is provided with a control rail, and the end of the pin is limited to the control rail; When the lower end of the actuator body abuts against the step and presses down the locking member, the control track guides the pin to move radially and engage in the connecting groove.

[0007] In a preferred embodiment, when the actuator body abuts against the step, the projections of the movable groove and the connecting groove on the cross-section at least partially coincide, and the connecting groove is located at the radial inner end of the movable groove; When the locking member is pressed down, the control track guides the pin to move from the radially outer end of the movable groove to the radially inner end and engage with the connecting groove.

[0008] In a preferred embodiment, the control track includes an upper track section, a middle track section, and a lower track section arranged from top to bottom; The upper section of the track is located radially inside the lower section of the track, and the middle section of the track is inclinedly connected between the upper section and the lower section of the track; When the locking member is pressed down, the pin moves from the lower section of the track, through the middle section of the track, to the upper section of the track.

[0009] In a preferred embodiment, the upper section of the track does not penetrate the upper surface of the locking member, and the lower section of the track does not penetrate the lower surface of the locking member.

[0010] In a preferred embodiment, the outer wall of the locking member is provided with a mounting hole, which communicates with the lower section of the control track; The pin is inserted through the mounting hole, such that the two ends of the pin are respectively located in the lower section of the two control rails.

[0011] In a preferred embodiment, the outer wall of the actuator body is provided with a stop, and when the upper surface of the locking member abuts against the stop, the lower section of the control track aligns with the movable groove on the actuator body.

[0012] In a preferred embodiment, there are two pins, which are located on both sides of the actuator body.

[0013] In a preferred embodiment, the outer wall of the actuator body is provided with a guide post, and the inner wall of the locking member is provided with a guide groove that cooperates with the guide post.

[0014] In a preferred embodiment, the outer wall of the actuator body is provided with a plurality of actuator latches, which are spaced apart along the axis of the actuator body; The inner wall of the locking component is provided with a locking buckle; When the locking member moves along the axis of the actuator body, the locking latch can selectively engage between any two adjacent actuator latches.

[0015] Compared with existing technologies, this technical solution has the following advantages: The linear motion of the locking element, either pressing down or lifting up, causes the pin to move radially, thus achieving rapid connection and disconnection between the actuator and the valve. This connection method forms a rigid interlock, effectively resisting vibrations during long-term system operation and fundamentally eliminating the risk of traditional nuts loosening due to vibration, greatly improving the reliability of the system connection. Furthermore, its installation and disassembly process requires only simple linear push-pull movements, eliminating the need for rotation, which not only saves effort but also significantly improves assembly and disassembly efficiency. Attached Figure Description Figure 1 This is a schematic diagram of the threaded connection between an existing actuator and a valve. Figure 2 This is a schematic diagram of the assembly of the actuator and valve described in this utility model; Figure 3 This is an exploded view of the actuator described in this utility model; Figure 4 This is a top view of the locking component described in this utility model; Figure 5 for Figure 4 Sectional view along the AA direction; Figure 6 This is a front view of the locking component described in this utility model; Figure 7 for Figure 6 Sectional view along the BB direction; Figures 8 to 10 This is a flowchart illustrating the assembly process of the pin described in this utility model. Figures 11 to 12 This is a flowchart illustrating the assembly process of the actuator and valve described in this utility model.

[0016] In the diagram: 100 Actuator, 110 Actuator Body, 111 Movable Groove, 111a Inner Radial End, 111b Outer Radial End, 112 Limit Position, 113 Guide Post, 114 Actuator Buckle, 120 Locking Component, 121 Control Rail, 121a Upper Rail Section, 121b Middle Rail Section, 121c Lower Rail Section, 122 Mounting Hole, 123 Guide Groove, 124 Locking Buckle, 130 Pin, 200 Valve, 210 Connecting Section, 211 Step, 212 Connecting Groove, 300 Locking Nut. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Please refer to Figure 2 and Figure 3 An embodiment of this utility model provides an actuator 100 for connection to a connecting section 210 of a valve 200. The outer wall of the connecting section 210 is provided with a step 211 and a connecting groove 212 located above the step 211. The actuator 100 includes: The actuator body 110 has a lower end for abutting against the step 211 of the connecting section 210. The actuator body 110 has a movable groove 111 for the pin 130 to move radially. Locking member 120, which is axially movable and sleeved on the outside of the actuator body 110; Pin 130, the pin 130 is inserted into the movable groove 111 of the actuator body 110; The inner wall of the locking member 120 is provided with a control rail 121, and the end of the pin 130 is limited to the control rail 121; When the lower end of the actuator body 110 abuts against the step 211 and presses down the locking member 120, the control rail 121 guides the pin 130 to move radially and engage in the connecting groove 212.

[0019] By pressing down the locking member 120 in a linear motion, the pin 130 can be radially engaged into the connecting groove 212 of the valve 200, achieving quick installation. During disassembly, lifting the locking member 120 allows for quick separation. The operation is simple and effortless, eliminating the need for operator feel to control the preload as in threaded connections. This resolves the contradiction between insufficient preload leading to loosening and excessive preload making disassembly difficult, ensuring the reliability of the connection.

[0020] like Figure 2 and Figure 3 As shown, the movable groove 111 extends radially along the actuator body 110 and penetrates the actuator body 110 in a direction perpendicular to the axial direction of the actuator body 110. In other words, the axis of the movable groove 111 is perpendicular to the axis of the actuator body 110.

[0021] The cross-section of the movable groove 111 is elongated, extending radially along the actuator body 110. Its two ends are defined as an inner radial end 111a and an outer radial end 111b, respectively, and the direction of the line connecting the two ends is radial. The distance between the inner radial end 111a and the outer radial end 111b is denoted as the length of the elongated hole.

[0022] The pin 130 has a circular cross-section, and its diameter is set to be smaller than the length of the elongated hole. This dimensional design allows the pin 130 to move radially between the inner radial end 111a and the outer radial end 111b of the actuator body 110.

[0023] like Figure 2As shown, the distance between the step 211 of the valve 200 and the connecting groove 212 is equal to the distance between the lower end of the actuator body 110 and the movable groove 111. Thus, when the lower end of the actuator body 110 abuts against the step 211, the movable groove 111 and the connecting groove 212 are at the same horizontal height, preparing for the pin 130 to be engaged in the connecting groove 212.

[0024] like Figure 2 and Figure 11 As shown, when the lower end of the actuator body 110 abuts against the step 211, the projections of the movable groove 111 and the connecting groove 212 on the cross section at least partially coincide, and the position of the connecting groove 212 corresponds to the radial inner end 111a of the movable groove 111. At this time, the pin 130 is located at the radial outer end 111b of the movable groove 111.

[0025] When the user presses down on the locking member 120, the locking member 120 moves axially downward relative to the actuator body 110. During this process, the control rail 121 located on the inner wall of the locking member 120 interacts with the end of the pin 130, converting the axial downward movement of the locking member 120 into the radial inward movement of the pin 130. The pin 130 is guided to slide from the radially outer end 111b of the movable groove 111 to the radially inner end 111a, and finally engages in the connecting groove 212 of the valve 200, thereby completing a quick and reliable connection between the actuator 100 and the valve 200.

[0026] refer to Figure 3 The number of pins 130 is two, and they are symmetrically arranged on both sides of the actuator body 110. The actuator body 110 is provided with two movable slots 111, and one pin 130 is inserted into each movable slot 111.

[0027] The inner wall of the locking member 120 is provided with four control rails 121, which are arranged in pairs opposite each other, so that the two ends of the pin 130 are respectively confined within a pair of opposite control rails 121. By increasing the number of pins 130, the connection force between the actuator body 110 and the valve 200 is evenly distributed, thereby improving the stability and reliability of the connection.

[0028] like Figure 4 and Figure 5 As shown, the control track 121 includes an upper track section 121a, a middle track section 121b, and a lower track section 121c arranged from top to bottom; The upper section 121a of the track is located radially inside the lower section 121c of the track, and the middle section 121b of the track is inclinedly connected between the upper section 121a and the lower section 121c of the track; When the locking member 120 is pressed down, the pin 130 moves from the lower section 121c of the track, through the middle section 121b of the track, to the upper section 121a of the track.

[0029] The radial distance between the upper section 121a and the lower section 121c of the track is equal to the distance between the inner radial end 111a and the outer radial end 111b of the movable groove 111. This matching dimensional relationship is crucial for enabling the pin 130 to engage with the connecting groove 212 of the valve 200.

[0030] Specifically, when the locking member 120 is pressed down, it moves axially downward relative to the actuator body 110. The end of the pin 130, constrained by the control rail 121, slides from the initial position of the lower rail section 121c along the inclined middle rail section 121b, eventually reaching the upper rail section 121a. During this process, the design of the upper rail section 121a being radially inner to the lower rail section 121c forces the pin 130 to undergo radial inward displacement. This radial displacement is exactly equal to the distance between the radially inner end 111a and the radially outer end 111b of the movable groove 111, allowing the pin 130 to move from the radially outer end 111b to the radially inner end 111a of the movable groove 111, thereby engaging with the connecting groove 212 of the valve 200.

[0031] like Figure 3 and Figure 5 As shown, the upper section 121a of the track does not penetrate the upper surface of the locking member 120, and the lower section 121c of the track does not penetrate the lower surface of the locking member 120. This design encloses the pin 130 inside the control track 121, effectively preventing the pin 130 from accidentally coming out from the vertical direction.

[0032] like Figure 3 As shown, the outer wall of the actuator body 110 is provided with guide posts 113, and the inner wall of the locking member 120 is provided with guide grooves 123 that cooperate with the guide posts 113. There are two guide posts 113, which are arranged symmetrically.

[0033] The cooperation between the guide post 113 and the guide groove 123 can restrict the circumferential relative rotation between the locking member 120 and the actuator body 110, ensuring that the locking member 120 can only move along the axial direction of the actuator body 110, thereby providing stable motion guidance.

[0034] like Figures 5 to 9As shown, the outer wall of the locking member 120 is provided with a mounting hole 122, which is connected to the lower section 121c of the control rail 121; The pin 130 is inserted through the mounting hole 122, such that the two ends of the pin 130 are respectively located in the lower section 121c of the two control rails 121.

[0035] The outer wall of the locking member 120 is provided with a mounting hole 122, which communicates with the lower section 121c of one of the control rails 121. During assembly, first ensure that the locking member 120 is in its initial position. Figure 3 and Figure 8 As shown, the outer wall of the actuator body 110 is provided with a limiting stop 112. When the guide post 113 is aligned with the guide groove 123, and the locking member 120 is assembled on the outside of the actuator body 110, with the upper surface of the locking member 120 abutting against the stop 112, the lower section 121c of the control rail 121 is aligned with the movable groove 111 on the actuator body 110. Assembly operations are performed in this state.

[0036] During assembly, the pin 130 is inserted through the mounting hole 122, with its end passing sequentially through the mounting hole 122 and the lower section 121c of one side of the control track 121, then through the movable groove 111, and finally into the lower section 121c of the other control track 121 on the opposite side. At this point, the pin 130 passes through the movable groove 111, and its two ends are respectively confined within the two opposite control tracks 121, completing the assembly.

[0037] refer to Figure 6 The mounting hole 122 is constructed in a funnel shape, meaning its cross-sectional area gradually increases from the inside out, to guide the pin 130 through. The diameter of the mounting hole 122 on its axial inner side (i.e., where it connects with the control rail) is smaller than the diameter of the pin 130. This design creates a locking structure; once the pin 130 is fully pushed into the control rail 121, it cannot detach itself from the mounting hole 122 without external interference, thus ensuring product reliability during use and preventing functional failure.

[0038] like Figure 3 As shown, the outer wall of the actuator body 110 is provided with a plurality of actuator latches 114, and the plurality of actuator latches 114 are spaced apart along the axis of the actuator body 110; The inner wall of the locking member 120 is provided with a locking buckle 124; When the locking member 120 moves along the axis of the actuator body 110, the locking latch 124 can selectively engage between any two adjacent actuator latches 114, thereby positioning the locking member 120 at different axial heights.

[0039] The mating surfaces of the actuator latch 114 and the locking latch 124 are designed with curved surfaces. When the locking member 120 moves up and down, the curved surface guides the locking latch 124 to slide in and out smoothly without requiring excessive operating force. In the locked state, the curved surface mating creates an effective self-locking effect, thereby preventing the actuator 100 and valve 200 from accidentally falling off.

[0040] The assembly process of the actuator 100 is as follows: The locking member 120 is fitted onto the outside of the actuator body 110. During fitting, the guide post 113 on the outer wall of the actuator body 110 must be aligned with the guide groove 123 on the inner wall of the locking member 120. Then, the locking member 120 is pushed in axially until its upper surface abuts against the limiting stop 112 on the outer wall of the actuator body 110. In this position, the lower section 121c of the control track 121 inside the locking member 120 is precisely aligned axially with the movable groove 111 on the actuator body 110, preparing for the installation of the pin 130.

[0041] The pin 130 is inserted into the mounting hole 122 on the outer wall of the locking member 120. The end of the pin 130 passes sequentially through the mounting hole 122, the lower section 121c of one side control rail 121, the movable groove 111 of the actuator body 110, and finally enters the lower section 121c of the opposite control rail 121. At this time, both ends of the pin 130 are respectively confined within the two opposite control rails 121 and pass through the movable groove 111.

[0042] When the end of the pin 130 is located at the lower section 121c of the control track 121, the pin 130 is located at the radially outer end 111b of the movable groove 111. (Reference) Figure 1 At this time, the minimum distance L between the two pins 130 is greater than the outer diameter S of the connecting section 210 of the valve 200, so that the actuator body 110 can be smoothly fitted onto the outside of the connecting section 210.

[0043] like Figure 11 and Figure 12 As shown, the assembly process of the actuator 100 and the valve 200 is as follows: The actuator body 110 is fitted onto the outside of the connecting section 210 of the valve 200 and moved downward until the lower end of the actuator body 110 abuts against the step 211. At this time, the connecting groove 212 on the connecting section 210 is aligned with the movable groove 111. Pressing the locking member 120 downwards causes it to move axially downwards along the actuator body 110, with the pin 130 positioned by the control rail 121. During this process, the end of the pin 130 is constrained and guided by the control rail 121 on the inner wall of the locking member 120, sliding upwards from the lower section 121c of the rail at the initial position, along the inclined middle section 121b of the rail, and finally reaching the upper section 121a of the rail.

[0044] Because the upper section 121a of the track is located radially inside the lower section 121c of the track, this radial height difference forces the pin 130 to undergo radial inward displacement. This radial displacement is exactly equal to the distance between the radially inner end 111a and the radially outer end 111b, thereby driving the pin 130 to move from the radially outer end 111b to the radially inner end 111a of the movable groove 111. When the pin 130 moves to the radially inner end 111a, part of its structure precisely engages in the aligned valve connection groove 212, thereby achieving a quick and reliable connection between the actuator 100 and the valve 200.

[0045] The disassembly process of the actuator 100 and the valve 200 is as follows: Pull the locking member 120 upwards, causing it to move upwards along the axial direction of the actuator body 110. During this process, the end of the pin 130 is constrained and guided by the control rail 121, sliding downwards from the upper section 121a of the rail along the inclined middle section 121b of the rail, and finally returning to the lower section 121c of the rail.

[0046] Since the upper section 121a of the track is located radially inside the lower section 121c of the track, when the pin 130 moves from the upper section 121a back to the lower section 121c, the control track 121 forces the pin 130 to undergo a radially outward displacement. This radial displacement drives the pin 130 to move from the radially inner end 111a to the radially outer end 111b of the movable groove 111, causing it to completely retract from the connecting groove 212 of the valve 200, thereby releasing the mechanical interlock between the actuator 100 and the valve 200.

[0047] Once the pin 130 has completely exited the connecting groove 212, the entire actuator 100 can be lifted upwards to detach it from the connecting section 210 of the valve 200, thus completing the disassembly.

[0048] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. An actuator (100) for connection to a connecting section (210) of a valve (200), characterized in that, The outer wall of the connecting section (210) is provided with a step (211) and a connecting groove (212) located above the step (211). The actuator (100) includes: The actuator body (110) has a lower end for abutting against the step (211) of the connecting section (210), and the actuator body (110) has a movable groove (111) for the radial movement of the pin (130). A locking element (120) is axially movable and sleeved on the outside of the actuator body (110); A pin (130) passes through the movable groove (111) of the actuator body (110). The inner wall of the locking member (120) is provided with a control rail (121), and the end of the pin (130) is limited to the control rail (121). When the lower end of the actuator body (110) abuts against the step (211) and presses down the locking member (120), the control rail (121) guides the pin (130) to move radially and engage in the connecting groove (212).

2. The actuator (100) as claimed in claim 1, characterized in that, When the actuator body (110) abuts against the step (211), the projections of the movable groove (111) and the connecting groove (212) on the cross section at least partially coincide, and the connecting groove (212) is located at the radial inner end (111a) of the movable groove (111). When the locking member (120) is pressed down, the control rail (121) guides the pin (130) from the radially outer end (111b) of the movable groove (111) to the radially inner end (111a) and engages with the connecting groove (212).

3. The actuator (100) as described in claim 2, characterized in that, The control track (121) includes an upper track section (121a), a middle track section (121b), and a lower track section (121c) arranged from top to bottom. The upper section (121a) of the track is located radially inside the lower section (121c) of the track, and the middle section (121b) of the track is obliquely connected between the upper section (121a) and the lower section (121c); When the locking member (120) is pressed down, the pin (130) moves from the lower section (121c) of the track, through the middle section (121b) of the track, to the upper section (121a) of the track.

4. The actuator (100) as claimed in claim 3, characterized in that, The upper section (121a) of the track does not penetrate the upper surface of the locking member (120), and the lower section (121c) of the track does not penetrate the lower surface of the locking member (120).

5. The actuator (100) as described in claim 3, characterized in that, The outer wall of the locking member (120) is provided with a mounting hole (122), which is connected to the lower section (121c) of the control rail (121); The pin (130) is inserted through the mounting hole (122) such that the two ends of the pin (130) are respectively located in the lower section (121c) of the two control rails (121).

6. The actuator (100) as claimed in claim 3, characterized in that, The outer wall of the actuator body (110) is provided with a stop (112). When the upper surface of the locking member (120) abuts against the stop (112), the lower section (121c) of the control rail (121) is aligned with the movable groove (111) on the actuator body (110).

7. The actuator (100) as claimed in claim 1, characterized in that, There are two pins (130), which are located on both sides of the actuator body (110).

8. The actuator (100) as claimed in claim 1, characterized in that, The outer wall of the actuator body (110) is provided with a guide post (113), and the inner wall of the locking member (120) is provided with a guide groove (123) that cooperates with the guide post (113).

9. The actuator (100) as claimed in claim 1, characterized in that, The outer wall of the actuator body (110) is provided with a plurality of actuator buckles (114), and the plurality of actuator buckles (114) are spaced apart along the axis of the actuator body (110); The inner wall of the locking member (120) is provided with a locking buckle (124). When the locking member (120) moves along the axis of the actuator body (110), the locking latch (124) can selectively engage between any two adjacent actuator latches (114).

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