Camera lens protection device

Abstract

The camera lens protection device comprises a fixed part, an outer cover, a movable part and a shape memory alloy wire. The outer cover is provided with a concave structure and an outer cover end face, and the concave structure is concave relative to the outer cover end face. The movable piece is movably arranged relative to the fixed piece and comprises a movable body and a convex structure. The movable body is provided with a movable piece end face. The convex structure protrudes relative to the movable piece end face and is provided with a top. The shape memory alloy wire is arranged on the movable body and drives the movable body to rotate, so that the camera lens protection device is in a first state or a second state. In the first state, the convex structure is matched with the concave structure; in the second state, the top of the convex structure abuts against the outer cover end face of the outer cover, and the optical space in the lens can be increased.

Description

Technical Field

[0001] This invention relates to a camera lens protection device. Background Technology

[0002] Currently, the shooting function is an indispensable function for electronic devices (such as mobile phones, tablets, etc.). In order to obtain good image quality and shooting effect, the size of camera devices has become larger and larger, resulting in serious bulging of the electronic device and affecting the appearance of electronic devices. Summary of the Invention

[0003] The present invention relates to a camera lens protection device that can improve the aforementioned known problems.

[0004] An embodiment of the present invention provides a camera lens protection device. The camera lens protection device includes a fixing member, an outer cover, a movable member, and a shape memory alloy wire. The outer cover has a concave structure and an outer cover end face, the concave structure being recessed relative to the outer cover end face. The movable member is movably disposed relative to the fixing member and includes a movable body and a convex structure. The movable body has a movable member end face. The convex structure protrudes relative to the movable member end face and has a top. The shape memory alloy wire is disposed on the movable body, and the shape memory alloy wire drives the movable body to rotate, causing the camera lens protection device to be in a first state or a second state. In the first state, the convex structure matches the concave structure; in the second state, the top of the convex structure abuts against the outer cover end face of the outer cover. Thus, in the second state, the optical space inside the lens is increased, providing more optical functions, while in the first state, the volume of the camera lens protection device is reduced. Attached Figure Description

[0005] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0006] Figure 1A A schematic diagram showing the movement of the movable member 120' of the camera lens protection device 100' according to an embodiment of the present invention along a first direction D1'.

[0007] Figure 1B Show Figure 1A A schematic diagram of the movable part 120' of the camera lens protection device 100' moving along the second direction D2'.

[0008] Figure 2 A perspective view of a camera lens 10 according to an embodiment of the present invention is shown.

[0009] Figures 3-5 Show Figure 2 Exploded views of camera lens 10 from different angles.

[0010] Figure 6A Show Figure 2 A top-down view of camera lens 10.

[0011] Figure 6B Show Figure 6A A cross-sectional view of camera lens 10 along direction 6B-6B'.

[0012] Figure 7A Show Figure 6A A schematic diagram of camera lens 10 from another perspective.

[0013] Figure 7B Show Figure 7A A cross-sectional view of camera lens 10 along direction 7B-7B'.

[0014] Figure 8 Show Figure 2 A schematic diagram showing the movement of the outer cover 105 relative to the fixing member 110 along the +Z axis.

[0015] Figure 9 Show Figure 6B A schematic diagram of the movement of the outer cover 105 relative to the fixing member 110 along the +Z axis.

[0016] Figure 10 Show Figure 7B A schematic diagram of the movement of the outer cover 105 relative to the fixing member 110 along the +Z axis.

[0017] Figure 11 A cross-sectional view of a camera lens 20 according to another embodiment of the present invention is shown.

[0018] Figure 12 A cross-sectional view of a camera lens 30 according to another embodiment of the present invention is shown.

[0019] Figure 13A A schematic diagram showing the movement of the movable member 120” of a camera lens protection device 100” along a first direction D1' according to an embodiment of the present invention.

[0020] Figure 13B Show Figure 13A A schematic diagram of the movable part 120” of the camera lens protection device 100” moving along the second direction D2'. Detailed Implementation

[0021] Please refer to Figure 1A and 1B , Figure 1A A schematic diagram showing the movement of the movable member 120' of a camera lens protection device 100' along a first direction D1' according to an embodiment of the present invention is provided. Figure 1B Show Figure 1AA schematic diagram showing the movement of the movable member 120' of the camera lens protection device 100' along the second direction D2'. The camera lens protection device 100' includes a fixed member 110', a movable member 120', a shape memory alloy wire (SMA) 130', a first clamping member 140A', a second clamping member 140B', and a third clamping member 140C'.

[0022] The fixing member 110', movable member 120', shape memory alloy wire 130', first clamping member 140A', second clamping member 140B' and third clamping member 140C' of this embodiment have the same or similar technical features as the fixing member 110, movable member 120, shape memory alloy wire 130, first clamping member 140A, second clamping member 140B and third clamping member 140C described later, and will not be repeated here.

[0023] like Figure 1A and 1B As shown, the movable member 120' is movably configured relative to the fixed member 110'. The shape memory alloy wire 130' has a first wire end 131' and a second wire end 132'. A first clamping member 140A' clamps the first wire end 131'. A second clamping member 140B' clamps the portion 133' of the shape memory alloy wire 130' other than the first wire end 131' and the second wire end 132'. A third clamping member 140C' clamps the second wire end 132'. Thus, in the first control mode, when the first clamping member 140A' is energized (e.g., a first current I1 is applied), the length of the shape memory alloy wire 130' changes (e.g., shortens), driving the movable member 120' to rotate relative to the fixed member 110' in a first direction D1', thereby causing the outer cover 105 abutting against the movable member 120' to move. In the second control mode, when the third clamping member 140C' is energized (e.g., a second current I2 is applied), the length of the shape memory alloy wire 130' changes (e.g., shortens), driving the movable member 120' to move relative to the fixed member 110' in the second direction D2', thereby causing the outer cover 105 abutting against the movable member 120' to move. The aforementioned first direction D1' and second direction D2' are opposite directions. Furthermore, by controlling the current, the relative rotation between the movable member and the fixed member can be controlled more quickly and precisely.

[0024] The shape memory alloy wire 130' of this embodiment has the following characteristics: when the shape of the shape memory alloy wire 130' is changed, it can return to its original shape once heated (e.g., energized) to a certain jump temperature. The resistance value of the shape memory alloy wire 130' can be changed according to the change in wire length to detect and control the length of the shape memory alloy wire 130' after energization, thereby achieving dead loop control.

[0025] Please refer to Figures 2-10 , Figure 2A perspective view of a camera lens 10 according to an embodiment of the present invention is shown. Figures 3-5 Show Figure 2 Exploded views of camera lens 10 from different angles. Figure 6A Show Figure 2 A top view of camera lens 10. Figure 6B Show Figure 6A A cross-sectional view of camera lens 10 along direction 6B-6B'. Figure 7A Show Figure 6A A schematic diagram of camera lens 10 from another perspective. Figure 7B Show Figure 7A A cross-sectional view of camera lens 10 along direction 7B-7B'. Figure 8 Show Figure 2 A schematic diagram showing the movement of the outer cover 105 relative to the fixing member 110 along the +Z axis. Figure 9 Show Figure 6B A schematic diagram showing the movement of the outer cover 105 relative to the fixing member 110 along the +Z axis, and Figure 10 Show Figure 7B A schematic diagram of the movement of the outer cover 105 relative to the fixing member 110 along the +Z axis. Figures 2-7B The camera lens 10 shown is in the first state S1, while Figures 8-10 The camera lens 10 shown is in the second state S2. Figures 2-5 As shown, the camera lens 10 includes an optical module 11 and a camera lens protection device 100. The optical module 11 is disposed within the camera lens protection device 100. Light from the environment can pass through the camera lens protection device 100 and enter the optical module 11, whereby the optical module 11 can sense the light and generate a corresponding imaging signal. Although not shown, the optical module 11 may include at least one optical lens, a light sensor, etc., wherein light can pass through the optical lens and enter the light sensor, whereby the light sensor can sense the light and generate a corresponding imaging signal.

[0026] like Figures 3-5 As shown, the camera lens protection device 100 includes an outer cover 105, a fixing member 110, a movable member 120, a shape memory alloy wire 130, a first clamping member 140A, a second clamping member 140B, a third clamping member 140C, a circuit board 145, a grounding member 147, an insulating member 150, at least one guide rail 160, a sleeve 170, and a second magnetic member 180.

[0027] like Figures 3-5As shown, the outer cover 105 has at least one concave structure 105r and an outer cover end face 105e, the concave structure 105r being recessed relative to the outer cover end face 105e. The movable member 120 is movably configured relative to the fixed member 110 and includes a movable body 123 and an outwardly protruding structure 120p. The movable body 123 has a movable member end face 123e. The outwardly protruding structure 120p protrudes relative to the movable member end face 123e and has a top 120p1. A shape memory alloy wire 130 is disposed on the movable body 123, and the shape memory alloy wire 130 can drive the movable body 123 to rotate, so that the camera lens protection device 100 is in a first state S1 (as shown in Figures 1-7B) or a second state S2 (as shown in Figures 1-7B). Figures 8-10 (The state shown). In the first state S1, as... Figure 2 As shown, the convex structure 120p matches the concave structure 105r; in the second state S2, as... Figure 8 As shown, the top 120p1 of the convex structure 120p abuts against the outer cover end face 105e of the outer cover 105.

[0028] During the transition from the first state S1 to the second state S2, the outer cover 105 translates relative to the axis of rotation AX of the movable member 120 of the fixed member 110 (e.g., the Z-axis). In one embodiment, the movable member 120 only rotates (rotates about the axis of rotation AX), while the outer cover 105 only translates (translates along the axis of rotation AX). When the camera lens 10 is disposed in an electronic device (not shown), in the first state S1, the top surface 105t of the outer cover 105 of the camera lens protection device 100 (top surface 105t is shown in...) Figure 2 The lens protector 100 can be aligned with (e.g., flush with) or recessed into the casing of the electronic device; in the second state S2, the top surface 105t of the outer cover 105 of the lens protector 100 can protrude relative to the casing surface (not shown) of the electronic device. The aforementioned electronic device is, for example, a smartphone, laptop computer, tablet computer, monitor, IP network camera, etc.

[0029] like Figure 4 and 7B As shown, the fastener 110 has a fastener end face 110e1 and at least one first hole 110a1, and the outer cover 105 has at least one second hole 105a. The fastener end face 110e1 faces the outer cover end face 105e, and the second hole 105a extends from the outer cover end face 105e. When the convex structure 120p matches the concave structure 105r (first state S1), the fastener end face 110e1 of the fastener 110 abuts against the outer cover end face 105e of the outer cover 105. Figure 10 As shown, when the top 120p1 of the convex structure 120p disengages from the recess 105r1 of the concave structure 105r (the recess 105r1 is shown in...) Figure 3When the outer cover 105's outer cover end face 105e and the fixing member end face 110e1 of the fixing member 110 are separated by a distance h1 along the Z-axis (the top 120p1 of the convex structure 120p pushes up the outer cover 105). In one embodiment, when the top 120p1 of the convex structure 120p abuts against the outer cover end face 105e of the outer cover 105, the distance h1 is the maximum translational stroke of the outer cover 105 relative to the fixing member 110. When the top 120p1 of the convex structure 120p abuts against the side wall 105r2 of the concave structure 105r (the side wall 105r2 is shown in...), the outer cover 105 is separated by a distance h1 along the Z-axis (the top 120p1 of the convex structure 120p pushes up the outer cover 105). Figure 3 When (i.e., before the top 120p1 of the protruding structure 120p has abutted against the outer cover end face 105e of the outer cover 105), the distance h1 is less than the aforementioned maximum travel distance. In one embodiment, the aforementioned maximum travel distance is, for example, between 0.1 mm and 5 mm, but may also be greater or less.

[0030] like Figure 7B and 10 As shown, a guide rail 160 is disposed in the first hole 110a1 and the second hole 105a. For example, the guide rail 160 has a first end 161 and a second end 162 opposite to each other. The first end 161 is fixed to one of the first hole 110a1 and the second hole 105a, while the second end 162 of the guide rail 160 is slidably connected to the other of the first hole 110a1 and the second hole 105a. In this embodiment, the first end 161 is fixed to the second hole 105a, while the second end 162 is slidable relative to the first hole 110a1 (i.e., the second end 162 is loosely fitted with the first hole 110a1). Furthermore, the guide rail 160 is a first magnetic element. A second magnetic element 180 is disposed on the outer cover 105 or the fixing member 110 corresponding to the other of the first hole 110a1 and the second hole 105a. In this embodiment, the second magnetic element 180 is disposed on the fixing member 110. The fastener 110 further has a fastener end face 110e2 and at least one third hole 110a2, wherein the fastener end face 110e2 and the aforementioned fastener end face 110e1 are opposite end faces of the fastener 110. The third hole 110a2 extends from the fastener end face 110e2 toward the fastener end face 110e1. The second magnetic element 180 is disposed in (e.g., fixed or tightly fitted) the third hole 110a2. Furthermore, the first magnetic element and the second magnetic element 180 are, for example, magnets, yokes, or other components capable of generating magnetic or magnetic fields. As long as the first magnetic element and the second magnetic element 180 can generate magnetic attraction, the embodiments of the present invention do not limit the material, structure, and / or type of the first magnetic element and / or the second magnetic element 180.

[0031] The magnetic attraction force generated by the first magnetic element and / or the second magnetic element 180 causes the outer cover 105 to approach the fixing element 110. For example, when the movable element 120 rotates about the second direction D2, the convex structure 120p of the movable element 120 disengages downward from the concave structure 105r of the outer cover 105. Because the magnetic attraction force generated by the first magnetic element and the second magnetic element 180 forces the outer cover 105 to move towards the movable element 120, the outer cover 105 can remain in contact with the surface of the convex structure 120p of the movable element 120, such as... Figure 2 and 8 As shown.

[0032] like Figures 3-5 As shown in Figure 6B, the movable member 120 is movably configured relative to the fixed member 110. For example, the movable member 120 can rotate relative to the fixed member 110 about a pivot axis AX, where the AX axis is, for example, parallel to the Z-axis. The shape memory alloy wire 130 has a first wire end 131 and a second wire end 132. A first clamping member 140A clamps the first wire end 131. A second clamping member 140B clamps the portion 133 of the shape memory alloy wire 130 other than the first wire end 131 and the second wire end 132. A third clamping member 140C clamps the second wire end 132. Thus, in the first control mode, when the first clamping member 140A is energized, the length of the shape memory alloy wire 130 changes (e.g., shortens), driving the movable member 120 relative to the fixed member 110 in a first direction D1 (the first direction D1 is shown in Figure 6B). Figure 2 The rotation of the outer cover 105 along the +Z axis increases the optical space within the lens. In the second control mode, when the third clamping member 140C is energized, the length of the shape memory alloy wire 130 changes (e.g., shortens), driving the movable member 120 towards the second clamping member 140B along the second direction D2 (the second direction D2 is shown in the figure). Figure 2 The movement in the direction of the first direction D1 and the second direction D2 causes the outer cover 105 to move along the -Z axis. The first direction D1 and the second direction D2 are opposite directions. In one embodiment, the first direction D1 is, for example, counterclockwise, while the second direction D2 is, for example, clockwise. In addition, the aforementioned portion 133 is, for example, the middle position of the shape memory alloy wire 130, but this is not a limitation of the embodiments of the present invention.

[0033] In summary, the outer cover 105 has an adjustable travel relative to the fixing member 110. When wide-angle or telephoto photography is required, the outer cover 105 of the camera lens protection device 100 can move along the +Z axis to increase the optical space inside the lens. When wide-angle or telephoto photography is not required, the outer cover 105 of the camera lens protection device 100 can move along the -Z axis to reduce the volume of the camera lens protection device 100. In one embodiment, when the camera lens 10 is not open, the height of the camera lens 10 along the Z axis is minimal, and the optical lens (not shown) can be located closest to the optical sensor (not shown). When the camera lens 10 is open, the outer cover 105 moves along the +Z axis to increase the internal space of the camera lens 10 (this space can cover the travel required for the optical lens to meet all optical characteristics), so the optical lens (not shown) can move within the internal space to a required optical distance (to meet at least one optical characteristic).

[0034] like Figures 3-5 As shown, the fixed member 110 has a first limiting groove 110r1 and a third limiting groove 110r2, and the movable member 120 has a second limiting groove 120r1. The first clamping member 140A, the second clamping member 140B, and the third clamping member 140C are respectively disposed in the first limiting groove 110r1, the second limiting groove 120r1, and the third limiting groove 110r2. The degrees of freedom of the first clamping member 140A, the second clamping member 140B, and the third clamping member 140C are restricted by the first limiting groove 110r1, the second limiting groove 120r1, and the third limiting groove 110r2, respectively. Thus, when the length of the shape memory alloy wire 130 changes, the second clamping member 140B disposed on the movable member 120 is driven by the shape memory alloy wire 130, thereby causing the movable member 120 to rotate relative to the fixed member 110.

[0035] like Figure 4As shown, the fastener 110 includes a body 111 and a flange 112. The body 111 has a first outer peripheral surface 111s1. The flange 112 is connected to the body 111 and protrudes relative to the first outer peripheral surface 111s1 and has a second outer peripheral surface 112s. The fastener 110 further includes a first protrusion 114, which is disposed on the body 111 and protrudes relative to the fastener end face 110e1 and has the aforementioned first limiting groove 110r1. A first clamping member 140A can be easily installed in the first limiting groove 110r1 from the side of the fastener end face 110e1. The fastener 110 further includes a second protrusion 115, which is disposed on the flange 112 and protrudes relative to the upper surface 112u of the flange 112 and has the aforementioned third limiting groove 110r2. A third clamping member 140C can be partially located in the third limiting groove 110r2. In one embodiment, the first clamping member 140A may be fixed in the first limiting groove 110r1 by an adhesive layer (not shown), and / or the third clamping member 140C may be fixed in the third limiting groove 110r2 by an adhesive layer (not shown). In another embodiment, the first clamping member 140A may be tightly fitted (i.e., interfere with) the first limiting groove 110r1, and / or the third clamping member 140C may be tightly fitted (i.e., interfere with) the third limiting groove 110r2.

[0036] In another embodiment, the fastener 110 may omit a first protrusion 114, wherein the first limiting groove 110r1 is recessed relative to the end face 110e1 of the fastener, and / or the fastener 110 may omit a second protrusion 115, wherein the third limiting groove 110r2 penetrates the flange 112.

[0037] like Figure 4 As shown, in one embodiment, the first limiting groove 110r1 has a first groove width W11, and the first clamping member 140A has a first width W21. The first width W21 of the first clamping member 140A is approximately equal to or greater than the first groove width W11 of the first limiting groove 110r1, such that the displacement of the first clamping member 140A relative to the first limiting groove 110r1 is small or even zero. Similarly, the third limiting groove 110r2 has a third groove width W13, and the third clamping member 140C has a third width W23. The third width W23 of the third clamping member 140C is approximately equal to or greater than the third groove width W13 of the third limiting groove 110r2, such that the displacement of the third clamping member 140C relative to the third limiting groove 110r2 is small or even zero.

[0038] like Figure 4As shown, the first limiting groove 110r1 and the third limiting groove 110r2 are configured along the Z-axis (e.g., parallel to the rotation axis AX), in other words, the first limiting groove 110r1 and the third limiting groove 110r2 overlap along the Z-axis. This allows the first clamping member 140A configured in the first limiting groove 110r1 and the third clamping member 140C configured in the third limiting groove 110r2 to correspond to a small width region of the circuit board 145, thus allowing the width of the circuit board 145 to be designed to be smaller. In another embodiment, the first limiting groove 110r1 and the third limiting groove 110r2 may not overlap along the Z-axis (i.e., the first limiting groove 110r1 and the third limiting groove 110r2 are offset in their rotational directions about the Z-axis).

[0039] like Figure 3 As shown, the second clamping member 140B can be disposed within the second limiting groove 120r1. In one embodiment, the second clamping member 140B can be tightly fitted within the second limiting groove 120r1. The second limiting groove 120r1 has a second groove width W12, and the second clamping member 140B has a second width W22. The second width W22 of the second clamping member 140B is approximately equal to or greater than the second groove width W12 of the second limiting groove 120r1, such that the displacement of the second clamping member 140B relative to the second limiting groove 120r1 is small or even zero. In another embodiment, the second clamping member 140B can be fixed within the second limiting groove 120r1 by an adhesive layer (not shown). There is no relative movement relationship between the second clamping member 140B and the second limiting groove 120r1. Thus, when the movable member 120 and the fixed member 110 rotate relative to each other, the second clamping member 140B will not impact the side wall of the second limiting groove 120r1 and generate impact noise (if the second clamping member 140B and the second limiting groove 120r1 could move relative to each other, the second clamping member 140B would impact the side wall of the second limiting groove 120r1 and generate impact noise when it is pulled). In addition, since there is no relative movement relationship between the second clamping member 140B and the second limiting groove 120r1, clearance can be eliminated, allowing the movable member 120 and the fixed member 110 to more accurately position their relative positions during relative rotation.

[0040] As shown in Figure 6, the body 111 of the fixing member 110 has an inner peripheral surface 111s2 and a circuit board limiting groove 111r. The inner peripheral surface 111s2 and the first outer peripheral surface 111s1 are the two opposite surfaces of the body 111. The circuit board limiting groove 111r is recessed relative to the inner peripheral surface 111s2 to accommodate the circuit board 145 and prevent the circuit board 145 from interfering with the components inside the fixing member 110 (e.g., a part of the optical module 11, such as a lens).

[0041] like Figure 4 and 6BAs shown, the movable member 120 includes an inner peripheral surface 120s. The fixed member 110 includes at least one first protrusion 113, which protrudes relative to the first outer peripheral surface 111s1. In one embodiment, a plurality of first protrusions 113 are separated from each other and surround the central axis AX of the fixed member 110. The first protrusion 113 abuts against the inner peripheral surface 120s. Through the design of the abutment area between the first protrusion 113 and the inner peripheral surface 120s, there is sufficient friction between the movable member 120 and the fixed member 110, so that after power is cut off (no power is applied to the clamping member), the movable member 120 and the fixed member 110 do not easily rotate relative to each other, ensuring that the relative position between the outer cover 105 and the fixed member 110 remains fixed (after power is cut off, the shape memory alloy wire 130 tends to return to its length at low temperature (i.e., tends to drive the movable member 120 to rotate), but due to friction, the movable member 120 and the fixed member 110 can still remain relatively stationary). In other words, due to friction, the relative position between the outer cover 105 and the fixing member 110 can remain fixed even without continuous energization of the clamping member, achieving energy saving. However, in another embodiment, if there is no friction, the shape memory alloy wire 130 can be continuously energized to control the relative position between the movable member 120 and the fixing member 110, thereby determining the relative distance h along the Z-axis between the outer cover 105 and the movable member 120 (the relative distance h is shown in the figure). Figure 10 ).

[0042] In this embodiment, there are eight first protrusions 113, which are separated from each other. For example, two first protrusions 113 are arranged overlappingly along the Z-axis to form a first protrusion group, and four first protrusion groups are arranged on the first outer peripheral surface 111s1 of the movable member 120. However, in another embodiment, the number of first protrusions 113 may be single, and they are arranged around the central axis AX of the movable member 120 by an angle (e.g., 360 degrees or less). By designing the number and / or dimensions (e.g., length, width, and / or thickness) of the first protrusions 113, the contact area can be determined, thereby obtaining the desired frictional force between the movable member 120 and the fixed member 110.

[0043] like Figure 4 and 6BAs shown, the movable member 120 includes at least one second protrusion 121, which protrudes relative to the inner peripheral surface 120s. The first side 113s of the first protrusion 113s of the fixing member 110 abuts against the second side 121s of the second protrusion 121. Through the design of the abutment area between the first side 113s of the first protrusion 113s and the second side 121s of the second protrusion 121, sufficient friction exists between the movable member 120 and the fixing member 110. Therefore, after power is cut off (no power is applied to the clamping member), the movable member 120 and the fixing member 110 do not easily rotate relative to each other, ensuring that the relative position between the outer cover 105 and the fixing member 110 remains fixed (after power is cut off, the shape memory alloy wire 130 tends to return to its low-temperature length (i.e., tends to drive the movable member 120 to rotate), but due to friction, the movable member 120 and the fixing member 110 can still remain relatively stationary). In this embodiment, there are four second protrusions 121, which are separated from each other. However, in another embodiment, the number of second protrusions 121 may be single, and they may surround the central axis AX of the movable member 120 by an angle (e.g., 360 degrees or less). By designing the number and / or size (e.g., length, width, and / or thickness) of the second protrusions 121, the contact area can be determined, thereby obtaining the desired frictional force between the movable member 120 and the fixed member 110.

[0044] like Figure 5 and 6B As shown, the movable member 120 has a lower surface 120b, and the flange 112 of the fixed member 110 has an upper surface 112u, which abuts against the lower surface 120b. Through the abutment area design of the upper surface 112u and the lower surface 120b, there is sufficient friction between them, so that after the power is turned off (the clamping member is not powered on), the movable member 120 and the fixed member 110 do not easily rotate relative to each other, ensuring that the relative position between the outer cover 105 and the fixed member 110 remains fixed (after the power is turned off, the shape memory alloy wire 130 tends to return to its length at low temperature (i.e., tends to drive the movable member 120 to rotate), but due to the friction, the movable member 120 and the fixed member 110 can still remain relatively stationary).

[0045] like Figure 3 and 6BAs shown, the movable member 120 has an outer peripheral surface 120s, and a shape memory alloy wire 130 can be wound around the outer peripheral surface 120s at least once. Each time the shape memory alloy wire 130 is wound around the outer peripheral surface 120s, the rotational stroke of the movable member 120 is doubled. The movable member 120 has a groove 120r2, which can be wound around the central axis AX of the movable member 120 at least once. The shape memory alloy wire 130 can be disposed in the groove 120r2, such that the shape memory alloy wire 130 is correspondingly wound around the outer peripheral surface 120s of the movable member 120 at least once. In an embodiment, the outer peripheral surface 120s has at least one recess, which constitutes the aforementioned groove 120r2. The embodiments of the present invention do not limit the number of times the shape memory alloy wire 130 is wound around the outer peripheral surface 120s.

[0046] like Figure 4 and 6B As shown, the movable member 120 has a first groove 120r3 and a second groove 120r4. The first groove 120r3 has a first groove length L1 (e.g., the arc length about the axis of rotation AX), and the first clamping member 140A is slidably disposed in the first groove 120r3. In an embodiment, the first groove length L1 of the first groove 120r3 is greater than the first width W21 of the first clamping member 140A. In this way, the movable member 120 can slide relative to the first clamping member 140A by a stroke, which is the rotational stroke (angle) of the movable member 120 about the central axis AX. This rotational stroke can be equal to, less than or greater than 30 degrees, wherein the rotational stroke can be as large as possible. In addition, the second groove 120r4 has a second groove length L2 (e.g., the arc length about the axis of rotation AX), and the third clamping member 140C is slidably disposed in the second groove 120r4. In this embodiment, the second groove length L2 of the second slide 120r4 is greater than the third width W23 of the third clamping member 140C. This allows the movable member 120 to slide relative to the third clamping member 140C by a stroke, which is the rotational stroke (angle) of the movable member 120 about the central axis AX. This rotational stroke can be equal to, less than, or greater than 30 degrees, and the larger the rotational stroke, the better.

[0047] like Figure 3As shown, the shape memory alloy wire 130 includes a conductive wire body 130A and an insulating layer 130B. Except for the portion held by the clamping member, the insulating layer 130B covers the conductive wire body 130A. Specifically, a first wire end 131 exposes the conductive wire body 130A and is clamped by a first clamping member 140A, electrically connected to the first clamping member 140A. A second wire end 132 exposes the conductive wire body 130A and is clamped by a third clamping member 140C, electrically connected to the third clamping member 140C. A portion 133 exposes the conductive wire body 130A and is clamped by a second clamping member 140B, electrically connected to the second clamping member 140B. Furthermore, when the shape memory alloy wire 130 is wound around the outer peripheral surface 120s of the movable member 120 without power, it can be in a deformed state. After power is applied, the shape memory alloy wire 130 tends to return to its initial state (e.g., its length changes). In one embodiment, the shape memory alloy wire 130 shortens when energized (heated) and lengthens when de-energized (cooled).

[0048] like Figure 3 and 6B As shown, the first clamping member 140A includes a first portion 140A1, a second portion 140A2, and a third portion 140A3 connected together, with the second portion 140A2 connecting the first portion 140A1 and the third portion 140A3. The conductive wire 130A exposed at the first wire end 131 can be clamped between the first portion 140A1 and the second portion 140A2. At least two of the first portion 140A1, the second portion 140A2, and the third portion 140A3 are, for example, integrally formed structures. In terms of manufacturing process, the first clamping member 140A can be formed from a sheet metal by bending or stamping. In terms of material, the first clamping member 140A is, for example, formed of a conductive material, such as aluminum, copper, iron, or an alloy thereof. In one embodiment, as... Figure 6B As shown, the third part 140A3 is adjacent to the circuit board 145. The camera lens protection device 100 further includes at least one solder point P1, which connects the third part 140A3 and the circuit board 145 to electrically connect the first clamp 140A and the circuit board 145. A controller (not shown) can be electrically connected to the first clamp 140A via the circuit board 145 and the solder point P1 to provide a first current through the first clamp 140A to the shape memory alloy wire 130.

[0049] like Figure 3 and 6BAs shown, the second clamping member 140B includes a first portion 140B1, a second portion 140B2, and a third portion 140B3 connected together, with the second portion 140B2 connecting the first portion 140B1 and the third portion 140B3. At least two of the first portion 140B1, the second portion 140B2, and the third portion 140B3 are, for example, integrally formed structures. In terms of manufacturing process, the second clamping member 140B can be formed from a sheet metal by bending or stamping. In terms of material, the first clamping member 140A is, for example, formed of a conductive material, such as aluminum, copper, iron, or an alloy thereof. The conductive wire 130A exposed in the portion 133 between the first wire end 131 and the second wire end 132 can be clamped between the first portion 140B1 and the second portion 140B2. In one embodiment, as... Figure 6B As shown, the third part 140B3 abuts against the grounding member 147, so that part 133 of the shape memory alloy wire 130 can be electrically connected to the grounding member 147 through the second clamping member 140B.

[0050] like Figure 3 and 6B As shown, the third clamping member 140C includes a first portion 140C1, a second portion 140C2, and a third portion 140C3 connected together, with the second portion 140C2 connecting the first portion 140C1 and the third portion 140C3. At least two of the first portion 140C1, the second portion 140C2, and the third portion 140C3 are, for example, integrally formed structures. In terms of manufacturing process, the third clamping member 140C can be formed from a sheet metal by bending or stamping. In terms of material, the third clamping member 140C is, for example, formed of a conductive material, such as aluminum, copper, iron, or an alloy thereof. The conductive wire 130A exposed at the second wire end 132 can be clamped between the first portion 140C1 and the second portion 140C2. The camera lens protection device 100 further includes at least one solder point P2, which connects the third portion 140C3 and the circuit board 145. A controller (not shown) can be electrically connected to a third clamp 140C via a circuit board 145 and solder point P2 to provide a second current through the third clamp 140C to the shape memory alloy wire 130.

[0051] The aforementioned solder joints are, for example, solder paste or solder.

[0052] like Figure 4 and 6BAs shown, circuit board 145 extends from inner peripheral surface 111s2 to a second outer peripheral surface 112s protruding beyond flange 112. In one embodiment, circuit board 145 is, for example, a flexible circuit board. Circuit board 145 is electrically connected to a first terminal 131 and a second terminal 132. For example, circuit board 145 can be electrically connected to the first terminal 131 via a first clamp 140A and to the second terminal 132 via a third clamp 140C. Circuit board 145 can transmit current to one of the first terminal 131 and the second terminal 132. For example, in a first control mode, circuit board 145 can transmit a first current to the first terminal 131. In a second control mode, circuit board 145 can transmit a second current to the second terminal 132. Embodiments of the present invention do not limit the value of the first current and / or the value of the second current. The first control mode and the second control mode may not be executed simultaneously.

[0053] like Figure 6B As shown, the grounding member 147 is disposed between the movable member 120 and the second clamping member 140B and is electrically connected to the second clamping member 140B. The grounding member 147 is electrically connected to a ground potential (not shown), so that the second clamping member 140B is grounded through the grounding member 147.

[0054] like Figure 6B As shown, the insulating member 150 is disposed between the second clamping member 140B and the shape memory alloy wire 130 to isolate the second clamping member 140B from the shape memory alloy wire 130, thereby preventing at least one turn of the shape memory alloy wire 130 (excluding the turn 133) from being electrically short-circuited with the second clamping member 140B. Specifically, although the conductive wire 130A of the shape memory alloy wire 130 is covered with an insulating layer 130B, under long-term friction (the shape memory alloy wire 130 and the movable member 120 will slide relative to each other), the insulating layer 130B may be damaged, causing the conductive wire 130A to be exposed. Because the second clamping member 140B and the shape memory alloy wire 130 are separated by the insulating member 150, the aforementioned "electrical short-circuit problem" can be further protected.

[0055] like Figure 2 and 6B As shown, the sleeve 170 surrounds the fixing member 110, the movable member 120 and the shape memory alloy wire 130 to protect the fixing member 110, the movable member 120 and the shape memory alloy wire 130.

[0056] Please refer to Figure 11The diagram shows a cross-sectional view of a camera lens 20 according to another embodiment of the present invention. The camera lens 20 includes an optical module 11 and a camera lens protection device 200. The optical module 11 is disposed within the camera lens protection device 200. Light from the environment can pass through the camera lens protection device 200 and enter the optical module 11, which can sense the light and generate a corresponding imaging signal. Although not shown, the optical module 11 may include at least one optical lens, a light sensor, etc., wherein light can pass through the optical lens to the light sensor, which can sense the light and generate a corresponding imaging signal.

[0057] like Figure 11 As shown, the camera lens protection device 200 includes an outer cover 205, a fixing member 110, a movable member 120, a shape memory alloy wire 130, a first clamping member 140A (not shown), a second clamping member 140B (not shown), a third clamping member 140C (not shown), a circuit board 145 (not shown), a grounding member 147 (not shown), an insulating member 150 (not shown), at least one guide rail 260, a sleeve 170, a first magnetic member 280, and a second magnetic member 180.

[0058] The camera lens protection device 200 of this embodiment of the invention includes the same technical features as the aforementioned camera lens protection device 100, with at least one difference: the guide rail 260 and the outer cover 205 are made of the same or similar materials, and the guide rail 260 and the outer cover 205 are integrally formed. Furthermore, a first magnetic element 280 is disposed on the guide rail 260, and at least a portion of the first magnetic element 280 is embedded within the guide rail 260.

[0059] Please refer to Figure 12 The diagram shows a cross-sectional view of a camera lens 30 according to another embodiment of the present invention. The camera lens 30 includes an optical module 11 and a camera lens protection device 300. The optical module 11 is disposed within the camera lens protection device 300. Light from the environment can pass through the camera lens protection device 300 and enter the optical module 11, whereby the optical module 11 can sense the light and generate a corresponding imaging signal. Although not shown, the optical module 11 may include at least one optical lens, a light sensor, etc., wherein light can pass through the optical lens and enter the light sensor, whereby the light sensor can sense the light and generate a corresponding imaging signal.

[0060] like Figure 12 As shown, the camera lens protection device 300 includes an outer cover 305, a fixing member 310, a movable member 120, a shape memory alloy wire 130, a first clamping member 140A (not shown), a second clamping member 140B (not shown), a third clamping member 140C (not shown), a circuit board 145 (not shown), a grounding member 147 (not shown), an insulating member 150 (not shown), at least one stop member 360, an elastic member 365, and a sleeve 170.

[0061] like Figure 12 As shown, the camera lens protection device 300 of this embodiment of the invention includes technical features similar to those of the aforementioned camera lens protection device 100, with at least one difference in that the outer cover 305 and the fixing member 310 are kept in contact by elastic force. The outer cover 305 includes technical features similar to or the same as those of the outer cover 105, with at least one difference in that the second hole 305a of the outer cover 305 is structurally different from the second hole 105a of the outer cover 105. The fixing member 310 includes technical features similar to or the same as those of the fixing member 110, with at least one difference in that the first hole 310a of the fixing member 310 is structurally different from the first hole 110a of the fixing member 110.

[0062] like Figure 12 As shown, the stop member 360 includes a connecting abutment portion 361 and a fixing portion 362. One end 3621 of the fixing portion 362 is fixed to a second hole 305a of the outer cover 305. In one embodiment, the end 3621 has a male thread, and the second hole 305a has a female thread. The relative position between the stop member 360 and the outer cover 305 can be fixed by the engagement of the end 3621 and the second hole 305a. The fixing member 310 has at least one first hole 310a, which extends from the fixing end face 310e1 to the fixing end face 310e2 of the fixing member 310. The fixing member 310 further includes a stop portion 311, which is disposed on the inner sidewall of the first hole 310a. An elastic member 365 is disposed between the stop portion 311 and the abutment portion 361 of the stop member 360 to provide an elastic restoring force to the abutment portion 361 and the stop portion 311. In detail, when the fixing part 362 of the stop member 360 enters the first hole 310a from the side of the fixing end face 310e2 and is fixed to the second hole 305a of the outer cover 305, the elastic member 365 deforms and stores elastic potential energy to provide elastic restoring force to the abutment part 361 and the stop part 311. Thus, during the process of the camera lens protection device 300 changing from the second state S2 to the first state S1 (the movable member 120 rotates about the second direction D2), the protruding structure 120p of the movable member 120 (not shown in the diagram) Figure 12 ) detaches downward from the outer cover 305 and recesses into the structure 105r (not shown in the figure) Figure 12 Because the aforementioned elastic restoring force forces the stop 360 to move along the -Z axis and simultaneously drives the outer cover 305 to move along the -Z axis (since the stop 360 and the outer cover 305 are fixed), the outer cover 305 can be kept abutting against the protruding structure 120p of the movable member 120 (not shown in the figure). Figure 12 ) surface.

[0063] Although the shape memory alloy wire 130 in the above embodiment is described using one example, it is not intended to limit the embodiments of the present invention. In another embodiment, the number of shape memory alloy wires 130 can be multiple, for example, two. The following uses... Figure 13A and 13B For example.

[0064] Please refer to Figure 13A and 13B , Figure 13A A schematic diagram showing the movement of the movable member 120” of a camera lens protection device 100” along a first direction D1' according to an embodiment of the present invention is provided. Figure 13B Show Figure 13A A schematic diagram of the movable part 120” of the camera lens protection device 100” moving along the second direction D2'. The camera lens protection device 100” includes a fixed part 110”, a movable part 120”, a shape memory alloy wire 130”, a first clamping part 140A”, a second clamping part 140B” and a third clamping part 140C”.

[0065] The fixing member 110”, movable member 120”, shape memory alloy wire 130”, first clamping member 140A”, second clamping member 140B” and third clamping member 140C” of this embodiment have the same or similar technical features as the aforementioned fixing member 110, movable member 120, shape memory alloy wire 130, first clamping member 140A, second clamping member 140B and third clamping member 140C, and will not be described again here.

[0066] like Figure 13A and 13BAs shown, the movable member 120” is movably configured relative to the fixed member 110”. The shape memory alloy wire 130” includes a separate first segment 130A” and a second segment 130B”. The first segment 130A” has a first wire end 130A1” and a third wire end 130A2”, while the second segment 130B” has a second wire end 130B1” and a fourth wire end 130B2”. A first clamping member 140A” clamps the first wire end 130A1 of the first segment 130A”. Two second clamping members 140B” respectively clamp the third wire end 130A2” of the first segment 130A” and the fourth wire end 130B2 of the second segment 130B”. A third clamping member 140C” clamps the second wire end 130B1 of the second segment 130B”. Thus, in the first control mode, when the first clamping member 140A” is energized, the length of the first segment 130A” of the shape memory alloy wire 130' changes (e.g., shortens), driving the movable member 120” to rotate relative to the fixed member 110” in the first direction D1', thereby driving the outer cover 105 to move along the +Z axis to increase the optical space inside the lens. In the second control mode, when the third clamping member 140C” is energized, the length of the second segment 130B” of the shape memory alloy wire 130” changes (e.g., shortens), driving the movable member 120' to move relative to the fixed member 110' in the second direction D2', thereby causing the outer cover 105 to move along the -Z axis to reduce the size of the camera lens along the Z axis, and thus reduce the maximum thickness of the electronic device (if the camera lens is installed in the electronic device). The aforementioned first direction D1' and second direction D2' are opposite directions. Since the first segment 130A” and the second segment 130B” are separated, in the first control mode, the current applied to the first segment 130A” and / or the temperature of the first segment 130A” have little or no effect on the second segment 130B”. Similarly, since the first segment 130A” is separated from the second segment 130B”, in the second control mode, the current applied to the second segment 130B” and / or the temperature of the second segment 130B” have little or no effect on the first segment 130A”.

[0067] In one embodiment, the two second clamping members 140B” are arranged adjacent to each other. For example, the two second clamping members 140B” are arranged approximately adjacent to the icon position of the aforementioned movable member 120. Correspondingly, the movable member 120” has two second limiting grooves 120r1 to respectively accommodate the two second clamping members 140B”.

[0068] In summary, this invention provides a camera lens protection device, which includes at least an outer cover, a movable member, a fixed member, and at least one shape memory alloy wire. The outer cover has a concave structure, while the movable member is movably configured relative to the fixed member and includes a convex structure. The shape memory alloy wire is disposed on the movable body, driving the movable body to rotate, thereby positioning the camera lens protection device in a first state or a second state. Thus, in the first state, the convex structure matches the concave structure (the top of the convex structure coincides with the bottom of the concave structure in position); in the second state, the top of the convex structure disengages from the bottom of the concave structure, or the top of the convex structure abuts against the outer cover end face of the outer cover, thereby increasing the optical space inside the lens.

[0069] In summary, although the present invention has been described above with reference to embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the invention, and these modifications and improvements are not limited to the embodiments of the present invention, but are still within the protection scope of the invention. Therefore, the protection scope of the present invention shall be determined by the claims.

Claims

1. A camera lens protection device, characterized in that, The camera lens protection device includes: One fastener; An outer cover has a concave structure and an outer cover end face, wherein the concave structure is recessed relative to the outer cover end face; A movable member, movably configured relative to the fixed member, and comprising: A movable body having a movable end face; A convex structure that protrudes from the end face of the movable part and has a top; A shape memory alloy wire is disposed on the movable body, and the shape memory alloy wire drives the movable body to rotate, so that the camera lens protection device is in a first state or a second state. In the first state, the convex structure matches the concave structure; in the second state, the top of the convex structure abuts against the end face of the outer cover.

2. The camera lens protection device as described in claim 1, characterized in that, During the transition from the first state to the second state, the outer cover translates relative to the fixed member along the direction of a rotation axis of the movable member.

3. The camera lens protection device as described in claim 2, characterized in that, The fastener has a first hole, the outer cover has a second hole, and the camera lens protection device includes: A guide rail is provided at the first hole and the second hole.

4. The camera lens protection device as described in claim 3, characterized in that, The guide rail has a first end and a second end, the first end being fixed to one of the first hole and the second hole, while the second end of the guide rail is slidably connected to the other of the first hole and the second hole.

5. The camera lens protection device as described in claim 3, characterized in that, The guide rail is a first magnetic component; the camera lens protection device includes: A second magnetic element is disposed on the outer cover or the fixing element corresponding to the other of the first hole and the second hole.

6. The camera lens protection device as described in claim 3, characterized in that, The fastener has a fastener end face, the outer cover end face faces the fastener end face, and the first hole extends from the fastener end face while the second hole extends from the outer cover end face.

7. The camera lens protection device as described in claim 2, characterized in that, The fastener has a first hole, and the outer cover includes: A cover; and A guide rail is fixed to the cover and slidably inserted into the first hole.

8. The camera lens protection device as described in claim 1, characterized in that, The shape memory alloy wire has a first wire end and a second wire end; the camera lens protection device includes: A first clamping element clamps the first wire end; A second clamping member clamps a portion of the shape memory alloy wire between the first end and the second end; and A third clamping element clamps the second wire end.

9. The camera lens protection device as described in claim 8, characterized in that, The fixing member has a first limiting groove and a third limiting groove, the movable member has a second limiting groove, and the first clamping member, the second clamping member and the third clamping member are respectively disposed in the first limiting groove, the second limiting groove and the third limiting groove.

10. The camera lens protection device as described in claim 9, characterized in that, The fastener includes: A body having an outer peripheral surface and a fixing end face; and A flange is connected to the body and protrudes relative to the outer peripheral surface; The first limiting groove is recessed relative to the end face of the fixing member, while the third limiting groove penetrates the flange.

11. The camera lens protection device as described in claim 10, characterized in that, The first limiting groove and the third limiting groove are arranged along the extension direction of the rotating shaft.

12. The camera lens protection device as described in claim 8, characterized in that, The first clamping member includes a first part and a second part connected together, and the first wire end is clamped between the first part and the second part.

13. The camera lens protection device as described in claim 8, characterized in that, The camera lens protection device includes: A circuit board is electrically connected to the first clamping member and the third clamping member.

14. The camera lens protection device as described in claim 13, characterized in that, The fastener has an inner peripheral surface and a circuit board limiting groove, which is recessed relative to the inner peripheral surface to accommodate the circuit board.

15. The camera lens protection device as described in claim 8, characterized in that, The camera lens protection device includes: A circuit board, electrically connected to the first terminal and the second terminal, and used for: A current is transmitted to one of the first terminal and the second terminal.

16. The camera lens protection device as described in claim 8, characterized in that, The fastener includes: A body having a first outer peripheral surface and an inner peripheral surface; and A flange protrudes from the first outer peripheral surface and has a second outer peripheral surface; The camera lens protection device includes a circuit board that extends from the first inner peripheral surface to protrude beyond the second outer peripheral surface.

17. The camera lens protection device as described in claim 8, characterized in that, The shape memory alloy wire includes: A conductive wire; and An insulating layer covers the conductive wire. The first wire end, the second wire end, and the portion thereof expose the conductive wire.

18. The camera lens protection device as described in claim 8, characterized in that, The movable part has an outer peripheral surface, around which a shape memory alloy wire is wound multiple times.

19. The camera lens protection device as described in claim 8, characterized in that, The movable part has a groove that surrounds a central axis of the movable part multiple times, and the shape memory alloy wire is disposed in the groove.

20. The camera lens protection device as described in claim 8, characterized in that, The movable member includes an inner peripheral surface; the fixed member includes an outer peripheral surface and a first protrusion, the first protrusion protruding relative to the outer peripheral surface, and the first protrusion abutting against the inner peripheral surface.

21. The camera lens protection device as described in claim 20, characterized in that, The fastener includes a plurality of the first protrusions, which are separated from each other and surround a central axis of the movable member.

22. The camera lens protection device as described in claim 8, characterized in that, The movable member includes an inner peripheral surface and a second protrusion, the second protrusion protruding relative to the inner peripheral surface; the fixed member includes an outer peripheral surface and a first protrusion, the first protrusion protruding relative to the outer peripheral surface, a first side of the first protrusion abutting against a second side of the second protrusion.

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