Actuator assembly and actuator

Abstract

This invention discloses an actuation component and an actuator. The actuation component includes a circuit board, a fixing component, and an actuation wire. The fixing component includes a first conductive layer, a conductive adhesive layer, and a cover plate. Both ends of the actuation wire extend into the conductive adhesive layer and are electrically connected to it. The conductive adhesive layer is electrically connected to the first conductive layer, and the first conductive layer is electrically connected to the circuit board. Heating the first conductive layer and the conductive adhesive layer achieves a welding effect, effectively fixing the actuation wire and enabling efficient current conduction, thus reducing product size.

Description

Technical Field

[0001] This invention relates to the field of actuator device technology, and more specifically to an actuation component and an actuator. Prior Technology

[0002] Existing technologies use actuators to control minute displacements. The movement of the actuator is controlled by an actuation wire, typically a shape memory alloy wire. When the temperature conditions of the shape memory alloy change, it deforms. In operation, a current is passed through the actuation wire made of shape memory alloy, generating Joule heating. This changes the temperature environment of the actuation wire, causing it to deform, thus enabling the actuator to output minute displacements to external components. By changing the current, the temperature environment of the actuation wire changes, allowing the user to control the deformation of the wire and achieve the actuator effect.

[0003] Current products mostly use wire clips to fix the actuator wires, but the actuator wires have a very small diameter, and using wire clips to fix them is prone to problems such as failure to fix them or breakage. At the same time, because wire clips have a certain volume, it is difficult to reduce the size of the product. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an actuation component and actuator that achieves better fixing effect, realizes efficient conduction, and reduces product size.

[0005] In a first aspect, embodiments of the present invention provide an actuation component, comprising: a circuit board having integrated circuit elements disposed thereon, the integrated circuit elements extending to the edge of the circuit board; at least one fixing component disposed at the edge of the circuit board, each fixing component comprising a first conductive layer, a conductive adhesive layer and a cover plate, the first conductive layer, the conductive adhesive layer and the cover plate being stacked sequentially, the first conductive layer being electrically connected to the integrated circuit elements and the conductive adhesive layer; and an actuation wire having both ends extending into the conductive adhesive layer and electrically connected to the conductive adhesive layer, the actuation wire and the circuit board forming a closed annular structure.

[0006] Optionally, the fixing component is disposed at one end of the circuit board along the width direction, and the two ends of the actuation line are respectively extended into the conductive adhesive layer of the fixing component in the length direction and extend towards the middle, and the first conductive layer covers the projection of the actuation line on the circuit board.

[0007] Optionally, the first conductive layer includes two first conductive sheets, which are disposed side by side on the circuit board with a gap between them. A conductive adhesive layer is disposed on the two first conductive sheets, which fills the gap between the two first conductive sheets and is connected to the circuit board. The two ends of the conductive adhesive layer extend beyond the outer side of the two first conductive sheets and extend to the edge of the circuit board along its length.

[0008] Optionally, there are two fixing components, which are set at both ends of the circuit board along the length direction. The two ends of the actuation wire extend into the conductive adhesive layer from the same end of the two fixing components along the length direction. The two first conductive layers cover the projection of the actuation wire on the circuit board.

[0009] Optionally, the portion of the actuation wire extending into the conductive adhesive layer is parallel to the edge of the conductive adhesive layer or has at least one curved section.

[0010] Optionally, the first conductive layer includes at least two first conductive elements, each of which is electrically connected to the conductive adhesive layer and the integrated circuit element.

[0011] Optionally, the actuation component further includes a second conductive layer disposed between the conductive adhesive layer and the cover plate; wherein the second conductive layer includes at least two second conductive elements, each of which is electrically connected to the conductive adhesive layer, and the positions of the second conductive elements correspond one-to-one with those of the first conductive elements.

[0012] Optionally, the actuation assembly further includes a second conductive layer disposed between the conductive adhesive layer and the cover plate; wherein the second conductive layer includes a second conductive element electrically connected to the conductive adhesive layer, and the second conductive element is located within the projection of the actuation line on the circuit board.

[0013] Secondly, embodiments of the present invention provide an actuator, comprising: an actuator body, wherein a second rotating shaft and a first rotating shaft are disposed on the top surface of the actuator body; a brake disc, disposed on the top surface of the actuator body and rotatably connected to the first rotating shaft, wherein a first rotating member protrudes from one end of the brake disc near the edge of the actuator body; a swing arm, disposed on the top surface of the actuator body and rotatably connected to the second rotating shaft, wherein a second rotating member protrudes from the swing arm, and the end of the swing arm adjacent to the brake disc abuts against the brake disc; a first driving member and a second driving member, both of which are actuation components, wherein the first driving member and the second driving member are respectively disposed on the top surface of the actuator body, wherein a first actuation line of the first driving member is connected to the first rotating member, and a second actuation line of the second driving member is connected to the second rotating member.

[0014] Optionally, the actuator further includes a mounting base connected to one end of the top surface of the actuator body, with the first driving member and the second driving member respectively disposed on both sides of the mounting base, and the end of the actuator away from the mounting base extending to form a positioning stage.

[0015] Optionally, the actuator also includes a first elastic element, a fixed column is mounted on the positioning platform, and the two ends of the first elastic element are respectively connected to the fixed column and the end of the swing arm away from the brake disc.

[0016] Optionally, the mounting base has at least one steering block protruding, and the second actuation line is connected to the second rotating member after being turned by the at least one steering block.

[0017] Optionally, the actuator further includes a second elastic element disposed between the brake disc and the actuator body and abutting against the brake disc and the actuator body.

[0018] Optionally, a portion of the first drive element and / or the second drive element is embedded within the actuator body.

[0019] Optionally, the mounting base has a receiving groove, and the first driving member and / or the second driving member are disposed in the receiving groove.

[0020] This invention provides an actuation component and an actuator. The actuation component includes a circuit board, a fixing component, and an actuation wire. The fixing component includes a first conductive layer, a conductive adhesive layer, and a cover plate. Both ends of the actuation wire extend into the conductive adhesive layer and are electrically connected to it. The conductive adhesive layer is electrically connected to the first conductive layer, and the first conductive layer is electrically connected to the circuit board. Heating the first conductive layer and the conductive adhesive layer achieves a welding effect, effectively fixing the actuation wire and enabling efficient current conduction, thus reducing product size. Simple Explanation of the Diagram

[0021] The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings, in which: Figure 1 is a front perspective view of an actuation component according to an embodiment of the present invention; Figure 2 is a front view of an actuation component according to an embodiment of the present invention; Figure 3 is a cross-sectional view of an actuation component according to an embodiment of the present invention; Figure 4 is a perspective view of the rear of an actuator component according to an embodiment of the present invention; Figure 5 is a front perspective view of the actuation component according to another embodiment of the present invention; Figure 6 is a perspective view of the rear of the actuation component according to another embodiment of the present invention; Figure 7 is a front perspective view of the actuation component after removing the cover plate, the second conductive layer and the conductive adhesive layer according to another embodiment of the present invention; Figure 8 is a perspective view of a fixing assembly with a curved section on an actuation line according to an embodiment of the present invention; Figure 9 is a perspective view of a fixing assembly with a bent section of the actuation line according to an embodiment of the present invention, in which the second conductive layer and the conductive adhesive layer have been removed; Figure 10 is a front perspective view of an actuator according to an embodiment of the present invention; Figure 11 is a perspective view of the back of an actuator according to an embodiment of the present invention; Figure 12 is a front view of an actuator according to an embodiment of the present invention; Figure 13 is a partial cross-sectional view of the actuator according to an embodiment of the present invention; Figure 14 is a cross-sectional view of the fixing structure before processing according to an embodiment of the present invention; Figure 15 is a top view of the arrangement of first conductive elements on a circuit board according to an embodiment of the present invention; Figure 16 is a cross-sectional view of the fixed structure after molding according to an embodiment of the present invention; Figure 17 is a cross-sectional view of the fixing structure before processing according to another embodiment of the present invention; Figure 18 is a top view of the arrangement of the second conductive elements on the cover plate according to another embodiment of the present invention; Figure 19 is a cross-sectional view of the fixed structure after molding according to another embodiment of the present invention; Figure 20 is a cross-sectional view of the fixing structure before processing according to another embodiment of the present invention; Figure 21 is a cross-sectional view of the fixed structure after molding according to another embodiment of the present invention; Figure 22 is a schematic diagram of an electronic device according to an embodiment of the present invention; Figure 23 is a schematic diagram of an electronic device according to another embodiment of the present invention; and Figure 24 is a schematic diagram of an electronic device according to another embodiment of the present invention. Implementation

[0022] The present application is described below based on embodiments, but it is not limited to these embodiments. In the detailed description of the present application below, certain specific details are described in detail. Those skilled in the art can fully understand the present application without these details. To avoid obscuring the substance of the present application, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0023] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0024] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] For ease of explanation, spatially related terms such as “inside,” “outside,” “below,” “below,” “lower,” “above,” “upper,” etc., are used herein to describe the relationship between one element or feature illustrated in the figure and another. It will be understood that spatially related terms may be intended to encompass different orientations of the device in use or operation besides those depicted in the figure. For example, if the device in the figure is flipped, an element described as “below” or “below” another element or feature would then be positioned “above” that other element or feature. Thus, the exemplified term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein should be interpreted accordingly.

[0026] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0027] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "plural" means two or more.

[0028] Anisotropic conductive film is a special electronic material composed of conductive particles and insulating adhesive. The conductivity of anisotropic conductive film varies at different locations. Where conductive particles are dispersed, it is difficult to form an effective current path, exhibiting insulation; where conductive particles are concentrated and broken, an effective current path can be formed, exhibiting conductivity. Therefore, anisotropic conductive film has the characteristics of adhesion and conductivity only in the direction perpendicular to the pressure plane. To achieve current conduction during the adhesion and fixation of circuit components, anisotropic conductive film is used as the conductive adhesive layer 12, as shown in Figures 14 to 16. During the formation of the fixed assembly, the anisotropic conductive film needs to be heated and pressurized to break the conductive particles and fuse them with the circuit components, achieving both conductivity and fixation. For the fixed assembly formed after heating and pressurization, the broken conductive particles gather between the actuator line 11 and the first conductive layer 131, achieving conductivity, while the insulating adhesive fills the remaining positions, achieving a unidirectional conductivity effect where the conductive adhesive layer 12 conducts only in the vertical direction. Meanwhile, the insulating adhesive material forms a stable and reliable connection between the cover plate 14, the actuation line 11 and the first conductive layer 131, and the first conductive layer 131 is fused to the circuit board 15 to form an effective fixing structure.

[0029] Referring to Figures 1 and 2, the actuation component 1 of this embodiment includes a circuit board 15, at least one fixing component, and an actuation wire 11. The fixing component fixes the actuation wire 11 to the circuit board 15, achieving a stable and effective connection, preventing the actuation wire 11 from failing to be fixed or breaking, and enabling miniaturization without occupying too much space. The number of fixing components is not limited and can be increased or decreased according to actual needs to ensure that the actuation wire 11 can be effectively fixed. The actuation wire 11 is made of shape memory alloy. The circuit board 15 conducts current into the actuation wire 11 through the fixing component, generating Joule heating that causes the actuation wire 11 to deform, thereby driving external components. Integrated circuit elements are disposed on the circuit board 15, extending to the edge of the circuit board 15 for electrical connection with the fixing component, realizing circuit conduction. The actuation wire 11 is located on the outside of the circuit board 15. Both ends of the actuation wire 11 extend into the fixing component for electrical connection. At this point, the actuation wire 11, the fixing component, and the circuit board 15 together form a closed ring structure. The portion of the actuation wire 11 outside the circuit board 15 forms a U-shaped structure. The actuation component 1 can control the movement of the external component through this U-shaped portion. The shape change of the actuation wire 11 after heating causes changes in its length and other conditions, enabling controllable small-amplitude movement of the external component. That is, by changing the current according to the required movement amplitude, the deformation amplitude of the actuation wire 11 can be controlled.

[0030] The actuation component 1 includes at least one fixing component, and the number of fixing components is not limited. Referring to Figures 1 to 4, Figure 3 is a cross-sectional view of section AA in Figure 2. Each fixing component includes a first conductive layer 131, a conductive adhesive layer 12, and a cover plate 14. The conductive adhesive layer 12 is disposed between the first conductive layer 131 and the cover plate 14, and the actuation wire 11 extends into the conductive adhesive layer 12 for fixation. The first conductive layer 131 is disposed on the circuit board 15 and electrically connected to the circuit board 15 to achieve efficient conduction between the integrated circuit components on the circuit board 15 and the conductive adhesive layer 12. To achieve more stable and effective fixation, the conductive adhesive layer 12 is disposed on the first conductive layer 131 and electrically connected to the first conductive layer 131 to achieve electrical connection and fixation between the first conductive layer 131 and the actuation wire 11. Since the conductive adhesive layer 12 is not completely conductive, but requires the breakage of its internal conductive particles during processing to achieve conductivity, and given the precision of integrated circuit components, using the first conductive layer 131 can avoid the problems of low conductivity and poor heat dissipation when integrated circuit components are directly connected to the conductive adhesive layer 12. The cover plate 14 is usually made of insulating material to prevent leakage and protect the fixed components.

[0031] Based on practical considerations, since the maximum tensile strength of shape memory alloy wires is typically 50 Newtons, and when the actuation component 1 is operational, the actuation wire 11, which generates 1 Newton of tensile strength, needs to be fixed for approximately 400 micrometers to achieve effective and stable fixation, the maximum length of the actuation wire 11 that needs to be fixed is approximately 20 millimeters. Furthermore, to enable the manufactured actuation component 1 to drive the external component to move stably and effectively, it is feasible to fix an actuation wire 11 at least 30 micrometers in length. Therefore, the length of the actuation wire 11 fixed in the conductive adhesive layer 12 is between 0.03 millimeters and 20 millimeters.

[0032] In some embodiments, the first conductive layer 131 can be configured as a metal contact layer. Referring to Figures 14, 15, and 16, the first conductive layer 131 includes at least two first conductive elements 1311, which are metal contacts. In other words, the first conductive layer 131 is actually composed of at least two first conductive elements 1311 arranged in an array. The shape and size of the first conductive layer 131 are determined by the shape and size of the projection of the actuation line 11 onto the circuit board 15, and the number of first conductive elements 1311 also varies with different shapes and sizes of the first conductive layer 131. Each first conductive element 1311 is electrically connected to the conductive adhesive layer 12 and the circuit board 15. On the circuit board 15 side, the first conductive element 1311, i.e., the metal contact, can make a more efficient and precise electrical connection with the integrated circuit components, achieving effective conduction. On the conductive adhesive layer 12 side, the first conductive elements 1311 are arranged in an array to form a first conductive layer 131 with a large surface area, which can better bond with the conductive particles in the conductive adhesive layer 12, improving the bonding force between the two and achieving a tighter bond after welding, avoiding the problem of fixation failure. A cover plate 14 covers the conductive adhesive layer 12 to protect the fixing structure.

[0033] In some embodiments, referring to Figures 5 and 6, the number of fixing components is one, disposed at one end of the circuit board 15 along the width direction. To maximize the length of the fixing component used to fix the actuation wire 11, both ends of the actuation wire 11 are respectively extended into the middle by the conductive adhesive layer 12 of the fixing component in the length direction, thereby maximizing the utilization of space within the fixing component, achieving a better fixing effect, and preventing the actuation wire 11 from failing to be fixed or breaking. The first conductive layer 131 covers the projection of the actuation wire 11 on the circuit board 15, increasing the contact area between the first conductive layer 131 and the actuation wire 11, as well as the conductive adhesive layer 12 disposed between the first conductive layer 131 and the actuation wire 11, enabling efficient conduction and tight bonding between the actuation wire 11 and the first conductive layer 131, and significantly reducing the space occupied by the fixing component compared to a wire clamp.

[0034] Referring to Figures 5 to 7, the first conductive layer 131 includes two first conductive sheets, which serve as the positive and negative terminals of the circuit within the actuation line 11, respectively, and are arranged side-by-side on the circuit board 15 at intervals. Each first conductive sheet is also structured by an array of first conductive elements 1311, i.e., metal contacts, to increase the contact area and achieve a more stable connection and more efficient conduction. A conductive adhesive layer 12 is disposed on the two first conductive sheets to achieve conduction between the first conductive sheets and the actuation line 11, while simultaneously filling the gap between the two first conductive sheets and connecting to the circuit board 15. It extends beyond the outer sides of the two first conductive sheets at both ends and reaches the edge of the circuit board 15 along its length. Since the conductive adhesive layer 12 has a unidirectional conduction characteristic that conducts only in the vertical direction, the conductive adhesive layer 12 filling the gap between the two first conductive sheets is actually insulating and will not cause a short circuit between the two first conductive sheets, which serve as the positive and negative terminals. Meanwhile, the conductive adhesive layer 12 also has the function of adhesion and fixation. The portion of the conductive adhesive layer 12 set between the two first conductive sheets and extending to the edge of the circuit board 15 can make the structure of the entire fixing assembly more stable and reliable, avoid the problems of fixing failure and actuation wire 11 breakage, and significantly reduce the space occupied by the fixing assembly compared to the wire clamp.

[0035] As shown in Figure 7, when the fixing component is located at one end of the circuit board 15 along its width, the two ends of the actuation wire 11 extending into the fixing component will actually form a relative positional relationship. Depending on the actual situation, the two ends of the actuation wire 11 extending into the fixing component may or may not be in contact. For the actuation wire 11, as long as Joule heating is generated inside due to the current, the actuation wire 11 can be deformed.

[0036] In some embodiments, referring to Figures 1 to 4, two fixing components are provided at both ends of the circuit board 15 along its length. To maximize the length of the fixing components used to fix the actuation wire 11, both ends of the fixing components extend to the edge of the circuit board 15. The two ends of the actuation wire 11 extend from the same end of each of the two fixing components into the conductive adhesive layer 12 along its length, and extend to the bottom of the conductive adhesive layer 12 along its length, maximizing the utilization of the fixing component length. Two first conductive layers 131, acting as positive and negative electrodes respectively, cover the projection of the actuation wire 11 onto the circuit board 15, increasing the contact area between the first conductive layer 131 and the actuation wire 11, and the conductive adhesive layer 12 disposed between the first conductive layer 131 and the actuation wire 11. This allows for efficient conduction and tight bonding between the actuation wire 11 and the first conductive layer 131, avoiding fixing failure and actuation wire 11 breakage.

[0037] Depending on the actual situation, in some embodiments, referring to Figures 7, 8, and 9, the portion of the actuation wire 11 extending into the conductive adhesive layer 12 may be parallel to the edge of the conductive adhesive layer 12, or may have at least one bent section, in order to increase the projected area of ​​the actuation wire 11 on the circuit board 15, thereby achieving a tighter and more reliable connection and more efficient conduction, and significantly reducing the space occupied compared to the wire clamp.

[0038] In some embodiments, referring to Figures 1 to 8 and Figures 17 to 21, the actuation assembly 1 further includes a second conductive layer 132 disposed between the conductive adhesive layer 12 and the cover plate 14, for achieving a tighter connection between the cover plate 14 and the conductive adhesive layer 12. Since the cover plate 14 itself is typically made of insulating material, the connection between the cover plate 14 and the conductive adhesive layer 12 is mainly achieved through the adhesion of the insulating adhesive. The second conductive layer 132 is made of metallic material, which can form a further fusion relationship with the broken conductive particles during hot pressing, making the bond between the cover plate 14 and the conductive adhesive layer 12 tighter and more reliable, avoiding fixation failure. At the same time, the second conductive layer 132 can also enable the current to generate a more complex flow within the actuation wire 11, enhancing circuit conductivity and Joule heating. Since the second conductive layer 132 mainly serves to assist in connection and enhance circuit conductivity, its area can be reduced to decrease the amount of metal used.

[0039] Depending on the actual situation, referring to Figures 17, 18, and 19, the second conductive layer 132 may include at least two second conductive elements 1321 or one second conductive element 1321, which are electrically connected to the conductive adhesive layer 12. The second conductive element 1321 is a micro-metal structure such as a metal microsphere, forming a fusion effect with the conductive particles in the conductive adhesive layer 12. When there are at least two second conductive elements 1321, their positions correspond one-to-one with the first conductive element 1311, achieving a symmetrical distribution on both sides of the actuation line 11. Since the conductive adhesive layer 12 has vertical conductivity, the second conductive element 1321 can participate in assisting the current distribution within the actuation line 11, enhancing current conduction and Joule heating effects. As shown in Figures 20 and 21, when there is only one second conductive element 1321, the position of the second conductive element 1321 corresponds to the actuation line 11. At this time, the position of the second conductive element 1321 is located within the projection of the actuation line 11 on the circuit board 15. It can also enhance the current conduction and Joule heating effect through the vertical conductivity of the conductive adhesive layer 12.

[0040] This invention also provides an actuator 2. Referring to Figures 10 to 13, Figure 13 is a cross-sectional view of a portion of section BB in Figure 12. The actuator 2 includes an actuator body 21, a brake disc 31, a swing arm 33, a first driving member 52, and a second driving member 54. The brake disc 31, swing arm 33, first driving member 52, and second driving member 54 are disposed on the actuator body 21. The brake disc 31 and the swing arm 33 abut against each other and are controlled by the first driving member 52 and the second driving member 54, respectively. The displacement generated by the actuator 2 is ultimately output outward through the swing arm 33, driving the structure to be moved to achieve minute and precise movement. A second rotating shaft 252 and a first rotating shaft 251 are provided on the top surface of the actuator body 21 for connecting with the brake disc 31 and the swing arm 33. A brake disc 31 is disposed on the top surface of the actuator body 21 and rotatably connected to the first rotating shaft 251. A first rotating member 32 protrudes from one end of the brake disc 31 near the edge of the actuator body 21, and the first rotating member 32 is used to connect with the first driving member 52. A swing arm 33 is disposed on the top surface of the actuator body 21 and rotatably connected to the second rotating shaft 252. A second rotating member 34 protrudes from the swing arm 33, and the second rotating member 34 is used to connect with the second driving member 54. The end of the swing arm 33 adjacent to the brake disc 31 abuts against the brake disc 31 and is subject to the braking and de-braking state changes achieved by the first driving member 52 and the second driving member 54. Depending on the actual situation, the actuator 2 may also include a mounting base 22, which is connected to one end of the top surface of the actuator body 21 to facilitate the installation of structures such as the first driving member 52 and the second driving member 54.

[0041] As shown in Figures 10 and 11, both the first driving member 52 and the second driving member 54 employ actuation assembly 1. The first driving member 52 and the second driving member 54 are respectively disposed on both sides of the mounting base 22 on the top surface of the actuator body 21, controlling the brake disc 31 and the swing arm 33 respectively. The first driving member 52 controls the brake disc 31 through the first actuation member. The first actuation line 51 is connected to the first rotating member 32, which extends into the loop formed by the first actuation line 51 and the first driving member 52. When the first actuation line 51 deforms due to Joule heat generated by the current, causing a change in length, the circumference of the loop formed by the first actuation line 51 and the first driving member 52 changes, driving the first rotating member 32 and causing the brake disc 31 to rotate around the first rotating shaft 251. For example, referring to Figure 10, from the front view of the actuator 2, when the initial brake disc 31 and the swing arm 33 are in contact in a braking state, the swing arm 33 is controlled by the brake disc 31 and cannot move. The first actuator line 51 drives the brake disc 31 to rotate clockwise around the first rotating shaft 251, and the actuation disc and the swing arm 33 no longer abut, thus releasing the brake. At this time, the swing arm 33 can move. The second drive member 54 controls the swing arm 33 through the second actuator. The second actuator line 53 is connected to the second rotating member 34, and the second rotating member 34 extends into the loop formed by the second actuator line 53 and the second drive member 54. When the second actuator line 53 deforms due to Joule heating generated by the current, causing a change in length, the circumference of the loop formed by the second actuator line 53 and the second drive member 54 changes, and the second rotating member 34 is driven, causing the swing arm 33 to rotate around the first rotating shaft 251. For example, referring to Figures 10 and 11, from the front view of the actuator 2 in Figure 10, the swing arm 33 can move after the brake is released. The second actuation line 53 drives the swing arm 33 to rotate clockwise around the second rotating shaft 252. At this time, the end of the swing arm 33 away from the mounting base 22, i.e. the movable end, can move in the vertical direction, i.e., the actuator 2 can output displacement to the outside.

[0042] Referring to Figure 10, the end of the actuator 2 furthest from the mounting base 22 extends to form a positioning platform 26, on which a fixing post 23 is mounted. The thickness of the positioning platform 26 is less than the thickness of the actuator body 21, so that when the swing arm 33 is driven by the second driving member 54 and the second actuation line 53, the positioning platform 26 can avoid the swing arm 33, preventing the movement of the swing arm 33 from being affected. The actuator 2 also includes a first elastic member 4 and a second elastic member 24 for resetting the moved swing arm 33 and brake disc 31. Depending on the actual situation, the first elastic member 4 and the second elastic member 24 can be selected from elastic structures such as springs, elastic sheets, and elastic metal rings, and different structures can be selected for the first elastic member 4 and the second elastic member 24 according to their position and method of use. The first elastic element 4 is connected at both ends to the fixed post 23 and the end of the swing arm 33 away from the brake disc 31, respectively. When the swing arm 33 moves too much in the clockwise direction, the elastic force of the first elastic element 4 can pull it back to its original position; when the swing arm 33 moves too much in the counterclockwise direction, the elastic force of the first elastic element 4 can bounce it back to its original position. The second elastic element 24 is disposed between the brake disc 31 and the actuator body 21 and abuts against the brake disc 31 and the actuator body 21. Depending on the actual situation, the second elastic element 24 is often disposed on the side of the brake disc 31 in the direction of rotation when the brake is released. For example, when the brake disc 31 is released by rotating clockwise, the second elastic element 24 is disposed on the right side of the first rotating shaft 251. Therefore, when the brake is released, the second elastic element 24 is compressed so that when the brake needs to be re-established, the second elastic element 24 can bounce back to realize the reset of the brake disc 31.

[0043] In some embodiments, referring to FIG11, at least one steering block protrudes from the mounting base 22 to facilitate steering of the first actuation line 51 or the second actuation line 53 according to requirements and structural design, in coordination with the movement of the brake disc 31 and the swing arm 33. For example, as shown in FIG11, the steering block may include a first steering block 221 and a second steering block 222. After the second actuation line 53 is steered via the first steering block 221 and the second steering block 222, it is connected to the second rotating member 34. In this case, it is not necessary to set a new mounting position for the second drive member 54 according to the position of the second rotating member 34, but rather to change the extension direction of the second actuation line 53 along the guide steering block. Since the first actuation line 51 and the second actuation line 53 tend to slide relative to the first rotating member 32, the second rotating member 34 and the steering block when deformed, the edge of the steering block is a smooth arc shape to avoid sharp shapes that could cause the first actuation line 51 and the second actuation line 53 to break.

[0044] In some embodiments, referring to Figures 10, 11, and 13, a portion of the first drive member 52 and / or the second drive member 54 is embedded within the actuator body 21 to facilitate the connection of integrated circuit elements on the circuit board 15 to other external circuits as needed, thereby controlling the first actuation line 51 and the second actuation line 53. Simultaneously, the portion embedded within the actuator body 21 is also protected by the actuator body 21.

[0045] In some embodiments, referring to FIG10, the mounting base 22 is further provided with a receiving groove 27, and the first driving member 52 and / or the second driving member 54 are disposed in the receiving groove 27 to achieve better protection and reduce the impact of dust, bumps and other factors on the first driving member 52 and / or the second driving member 54.

[0046] Depending on the actual product, referring to Figures 22, 23, and 24, multiple actuators 2 can be installed on structures such as voice coils, display screens, and lens modules. These actuators are connected to a swing arm 33 for outputting displacement via a connection structure, thus achieving precise control of minute movements, such as the vibration of the voice coil or changes in the focal length of the lens module. For example, Figure 22 shows the effect of connecting actuators 2 to each edge of the display screen, Figure 23 shows the effect of connecting actuators 2 to the edge of the voice coil, and Figure 24 shows the effect of connecting actuators 2 to the edge of the lens module. The more actuators 2 installed, the higher the precision of the movement of the electronic device. By installing multiple actuators 2, the precision control of the electronic device can be further improved, enhancing product quality and providing a better user experience.

[0047] This application provides an actuation component and an actuator. The actuation component includes a circuit board, a fixing component, and an actuation wire. The fixing component includes a first conductive layer, a conductive adhesive layer, and a cover plate. Both ends of the actuation wire extend into the conductive adhesive layer and are electrically connected to it. The conductive adhesive layer is electrically connected to the first conductive layer, and the first conductive layer is electrically connected to the circuit board. Heating the first conductive layer and the conductive adhesive layer achieves a welding effect, effectively fixing the actuation wire and enabling efficient current conduction, thus reducing product size.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0049] 1: Actuation component 11: Actuation Line 12: Conductive adhesive layer 131: First conductive layer 1311: First conductive element 132: Second conductive layer 1321: Second conductive element 14: Cover plate 15: Circuit Board 2: Actuator 21: Actuator body 22: Mounting bracket 221: First steering block 222: Second steering block 23: Fixed Column 24: Second elastic element 251: First pivot 252: Second pivot 26: Positioning station 27: Receiving tank 31: Brake disc 32: First rotating component 33: Swing arm 34: Second rotating component 4: First elastic element 51: First Actuation Line 52: First driving component 53: Second actuation line 54: Second drive unit

Claims

1. An actuation assembly comprising: a circuit board (15) having an integrated circuit element disposed thereon, the integrated circuit element extending to the edge of the circuit board (15); a fixing assembly disposed at the edge of the circuit board (15), the fixing assembly comprising a first conductive layer (131), a conductive adhesive layer (12) and a cover plate (14), the first conductive layer (131), the conductive adhesive layer (12) and the cover plate (14) being stacked sequentially, the first conductive layer (131) being electrically connected to the integrated circuit element and the conductive adhesive layer (12); and an actuation wire (11), the two ends of the actuation wire (11) extending into the conductive adhesive layer (12) and electrically connected to the conductive adhesive layer (12), the actuation wire (11) and the circuit board (15) forming a closed annular structure; The first conductive layer (131) includes at least two first conductive elements (1311), each of which is electrically connected to the conductive adhesive layer (12) and the integrated circuit element; the actuation assembly (1) further includes a second conductive layer (132), which is disposed between the conductive adhesive layer (12) and the cover plate (14); the second conductive layer (132) includes a second conductive element (1321), which is electrically connected to the conductive adhesive layer (12), and the second conductive element (1321) is located within the projection of the actuation line (11) on the circuit board (15).

2. The actuation assembly as claimed in claim 1, wherein the fixing assembly is disposed at one end of the circuit board (15) in the width direction, the two ends of the actuation line (11) are respectively extended into the middle by the two ends of the conductive adhesive layer (12) of the fixing assembly in the length direction, and the first conductive layer (131) covers the projection of the actuation line (11) on the circuit board (15).

3. The actuation assembly as claimed in claim 2, wherein the first conductive layer (131) includes a first conductive sheet, the number of the first conductive sheets is two, the two first conductive sheets are disposed side by side at intervals on the circuit board (15), the conductive adhesive layer (12) is disposed on the two first conductive sheets, the conductive adhesive layer (12) fills the gap between the two first conductive sheets and is connected to the circuit board (15), and the two ends of the conductive adhesive layer (12) extend beyond the outside of the two first conductive sheets and extend to the edge of the circuit board (15) along the length direction.

4. The actuation assembly as claimed in claim 1, wherein there are two fixing assemblies disposed at both ends of the circuit board (15) along the length direction, and the two ends of the actuation line (11) extend into the conductive adhesive layer (12) from the same end of the two fixing assemblies along the length direction, and the two first conductive layers (131) cover the projection of the actuation line (11) on the circuit board (15).

5. The actuation assembly as claimed in claim 2 or 4, wherein the portion of the actuation line (11) extending into the conductive adhesive layer (12) is parallel to the edge of the conductive adhesive layer (12) or has at least one curved segment.

6. The actuation component as described in claim 5, wherein, The second conductive layer (132) includes at least two second conductive elements (1321), and the at least two second conductive elements (1321) are electrically connected to the conductive adhesive layer (12) respectively. The positions of the second conductive elements (1321) and the first conductive element (1311) correspond one-to-one.

7. An actuator comprising: an actuator body (21) having a second rotating shaft (252) and a first rotating shaft (251) disposed on the top surface of the actuator body (21); and a brake disc (31) disposed on the top surface of the actuator body (21) and rotatably connected to the first rotating shaft (251), wherein a first rotating member (32) protrudes from one end of the brake disc (31) near the edge of the actuator body (21). A swing arm (33) is disposed on the top surface of the actuator body (21) and rotatably connected to the second rotating shaft (252). A second rotating member (34) protrudes from the swing arm (33). One end of the swing arm (33) adjacent to the brake disc (31) abuts against the brake disc (31). A first drive member (52) and a second drive member (54) are both actuation components (1) as described in any one of claims 1 to 6. The first drive member (52) and the second drive member (54) are respectively disposed on the top surface of the actuator body (21). A first actuation line (51) of the first drive member (52) is connected to the first rotating member (32), and a second actuation line (53) of the second drive member (54) is connected to the second rotating member (34).

8. The actuator as claimed in claim 7, wherein the actuator (2) further includes a mounting base (22) connected to one end of the top surface of the actuator body (21), the first drive member (52) and the second drive member (54) are respectively disposed on both sides of the mounting base (22), and the end of the actuator (2) away from the mounting base (22) extends to form a positioning stage (26).

9. The actuator as claimed in claim 8, wherein the actuator (2) further comprises a first elastic element (4), a fixed post (23) is mounted on the positioning table (26), and the two ends of the first elastic element (4) are respectively connected to the fixed post (23) and the end of the swing arm (33) away from the brake disc (31).

10. The actuator as claimed in claim 8, wherein the mounting base (22) has at least one steering block protruding thereon, and the second actuation line (53) is connected to the second rotating member (34) after being turned by at least one of the steering blocks.

11. The actuator as claimed in claim 8, wherein the actuator (2) further comprises a second elastic element (24) disposed between the brake disc (31) and the actuator body (21) and abutting against the brake disc (31) and the actuator body (21).

12. The actuator as claimed in claim 7, wherein a portion of the first drive member (52) and / or the second drive member (54) is embedded within the actuator body (21).

13. The actuator as claimed in claim 8, wherein the mounting base (22) has a receiving groove (27) and the first drive member (52) and / or the second drive member (54) are disposed in the receiving groove (27).

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