Drive mechanism

Abstract

A driving mechanism is used for driving an optical element to move and comprises a fixed part, a movable part, a driving assembly and a first guide piece. The optical element is arranged on the movable part, the driving assembly drives the movable part to move relative to the fixed part, and the first guiding piece is connected with the fixed part and the movable part and used for guiding the movable part to move relative to the fixed part.

Description

Technical Field

[0001] The utility model relates to a driving mechanism, and more specifically, to a driving mechanism for driving an optical element to move. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and thinner designs to provide users with more choices.

[0003] Some electronic devices with camera or video recording functions are equipped with a lens driving module to drive an optical element to move, thereby achieving the functions of autofocus and optical image stabilization (OIS). Light can pass through the aforementioned optical element to form an image on a photosensitive element.

[0004] However, how to further miniaturize the lens driving module and improve its stability and reliability has become an important challenge for researchers in this technical field. Utility Model Content

[0005] The purpose of the present invention is to provide a driving mechanism to solve at least one of the above problems.

[0006] In view of the above-mentioned known problems, an embodiment of the present invention provides a driving mechanism for driving an optical element to move, comprising a fixed portion, a movable portion, a driving assembly and a first guide. The optical element is disposed on the movable portion, and the driving assembly is used to drive the movable portion to move relative to the fixed portion. The first guide connects the fixed portion and the movable portion to guide the movable portion to move relative to the fixed portion.

[0007] In one embodiment, the fixed portion includes a shell and a polygonal base connected to each other, the movable portion is disposed in the shell, and the base has a first side, a second side, a third side and a fourth side, the first side and the third side are parallel to each other, and the second side and the fourth side are parallel to each other.

[0008] In one embodiment, the base has a first protruding column, the movable portion has a first recessed portion, and the first guiding member is sandwiched between the first protruding column and the first recessed portion.

[0009] In one embodiment, the first recessed portion is formed with a first abutting surface and a second abutting surface which are not parallel to each other and are used to abut against the first guiding member.

[0010] In one embodiment, the first abutting surface and the second abutting surface are not parallel to the first side edge and the second side edge.

[0011] In one embodiment, the first recessed portion further forms a third abutting surface and a fourth abutting surface which are not parallel to each other and are used to abut against the first guiding member.

[0012] In one embodiment, positions of the first and second abutting surfaces in a direction of an optical axis of the optical element are different from positions of the third and fourth abutting surfaces in the direction of the optical axis.

[0013] In one embodiment, the first protrusion has a first bearing surface and a second bearing surface, the first bearing surface is parallel to the second and fourth abutting surfaces, and the second bearing surface is parallel to the first and third abutting surfaces.

[0014] In one embodiment, the driving mechanism further includes a second guide member, the fixed portion has a second convex column, and the movable portion has a second concave portion, wherein the second guide member is sandwiched between the second convex column and the second concave portion.

[0015] In one embodiment, the second recessed portion is formed with a first side surface which is parallel to the first side edge and abuts against the second guiding member.

[0016] In one embodiment, the second recessed portion further forms a second side surface, a third side surface, a fourth side surface and a fifth side surface that do not contact the second guide member and the second protrusion, the second side surface connects the first and third side surfaces, and the fourth side surface connects the third and fifth side surfaces.

[0017] In one embodiment, the second protrusion has a third supporting surface and a fourth supporting surface, the third supporting surface is parallel to the first side, and the fourth supporting surface is parallel to the second side.

[0018] In one embodiment, the first and second protrusions are located at two opposite corners of the base.

[0019] In one embodiment, at least a portion of the second protrusion is located in the second recess.

[0020] In one embodiment, the first and second guide members are guide rods.

[0021] In one embodiment, the driving mechanism further includes a magnetic conductive element, and the driving assembly includes at least one magnet disposed on the fixed portion and at least one coil disposed on the movable portion. Specifically, the magnetic conductive element is disposed on a first mounting surface of the movable portion and is located between the coil and the first mounting surface.

[0022] In one embodiment, the movable portion has a first protrusion and a second protrusion, the first and second protrusions protrude from the first mounting surface, and the coil surrounds the first and second protrusions, wherein the first protrusion has a first side surface adjacent to the first mounting surface, and the first side surface is inclined relative to the first side edge and the second side edge of the base.

[0023] In one embodiment, the carrier further has a plurality of winding posts, and the winding posts protrude from the carrier in an extending direction, and the first side surface is parallel to the extending direction.

[0024] In one embodiment, the second protrusion has a second side surface adjacent to the first mounting surface, the second side surface is parallel to the second side edge, and the magnetic conductive element is located between the first side surface and the second side surface.

[0025] In one embodiment, the driving component includes a plurality of magnets disposed on the fixed portion and a plurality of coils disposed on the movable portion, the coils being respectively disposed on the first mounting surface and a second mounting surface of the movable portion, and a third protrusion is formed on the second mounting surface, wherein one of the coils surrounds the third protrusion, and the third protrusion has a third side surface, wherein the third side surface is inclined relative to the first side edge and the second side edge of the base.

[0026] In one embodiment, the first side surface and the third side surface are parallel to each other.

[0027] In one embodiment, an angle between the first side surface and the third side surface is less than 10 degrees.

[0028] In one embodiment, the magnetic conductive element has a main body and a plurality of extension portions connected to each other. The main body extends toward an optical axis direction of the optical element, and the extension portions extend from the main body toward opposite directions.

[0029] In one embodiment, the magnetic conductive element is in a cross shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 An exploded view of a driving mechanism according to an embodiment of the utility model is shown.

[0031] Figure 2 express Figure 1 An exploded view of the drive mechanism from another perspective.

[0032] Figure 3 express Figure 1 and Figure 2 A three-dimensional view of the drive mechanism after assembly.

[0033] Figure 4 express Figure 1 and Figure 2 Another perspective view of the drive mechanism after assembly.

[0034] Figure 5 An exploded view showing a magnetically conductive element and a coil before being mounted on a carrier.

[0035] Figure 6 express Figure 3 and Figure 4 A top view of the drive mechanism after removing the housing and frame.

[0036] Figure 7 A three-dimensional diagram showing a magnetic conductive element fixed on a carrier.

[0037] Figure 8 A three-dimensional diagram from another perspective showing the magnetic conductive element being fixed on the carrier.

[0038] Fig. 9 express Figure 6 A partial enlarged view of the A1 area in .

[0039] Fig.10 express Figure 6 A partial enlarged view of the A2 area in FIG.

[0040] Fig.11 express Figure 5 A three-dimensional view of the magnetic conductive element shown.

[0041] The reference numerals are as follows:

[0042] 100: Driving mechanism

[0043] B: Base

[0044] B1: First boss

[0045] B11: First bearing surface

[0046] B12: Second bearing surface

[0047] B2: Second boss

[0048] B21: The third bearing surface

[0049] B22: The fourth bearing surface

[0050] BL1: First side

[0051] BL2: Second side

[0052] BL3: Third side

[0053] BL4: Fourth side

[0054] BS: Lower reed

[0055] C: Coil

[0056] E: Circuit components

[0057] F: Framework

[0058] H: Shell

[0059] K: Magnetic element

[0060] K1: Ontology

[0061] K2: Extension

[0062] LH: Bearing

[0063] LH1: first recessed part

[0064] LH2: Second recessed portion

[0065] M: Magnetic components

[0066] N: Winding column

[0067] O: Optical axis

[0068] P1: First bump

[0069] P2: Second bump

[0070] P11: first side surface

[0071] P21: Second side surface

[0072] P3: The third bump

[0073] P31: Third side surface

[0074] Q1: The first side

[0075] Q2: The second side

[0076] Q3: The third side

[0077] Q4: The fourth aspect

[0078] Q5: The fifth aspect

[0079] R1: First guide

[0080] R2: Second guide

[0081] S1 first contact surface

[0082] S2: Second contact surface

[0083] S3: third contact surface

[0084] S4: fourth abutment surface

[0085] T1: First mounting surface

[0086] T2: Second mounting surface DETAILED DESCRIPTION

[0087] The following describes the drive mechanism of the embodiment of the utility model. However, it is easy to understand that the embodiment of the utility model provides many suitable utility model concepts and can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the utility model in a specific way, and are not used to limit the scope of the utility model.

[0088] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0089] The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used in the embodiments are used to illustrate and not to limit the present invention.

[0090] First, please refer to Figures 1 to 4 ,in Figure 1 FIG. 1 is an exploded view of a driving mechanism 100 according to an embodiment of the present invention. Figure 2 express Figure 1 An exploded view of the drive mechanism 100 from another perspective, Figure 3 express Figure 1 and Figure 2 The driving mechanism 100 is a three-dimensional view after assembly, Figure 4 express Figure 1 and Figure 2 Another perspective view of the drive mechanism 100 after assembly.

[0091] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the driving mechanism 100 of the present embodiment is, for example, a voice coil motor (VCM), which can be installed in a mobile phone or other portable electronic device to drive an optical element (such as an optical lens) to move, thereby achieving functions such as auto focusing (AF) or optical image stabilization (OIS).

[0092] The aforementioned driving mechanism 100 mainly includes a hollow shell H, a polygonal plastic base B, a first guide member R1, a second guide member R2, a circuit component E (such as a flexible circuit board), at least one lower spring BS, a carrier LH, a frame F, at least one magnetic element M and at least one coil C.

[0093] In this embodiment, the housing H has a hollow structure and is combined with the base B, thereby forming a fixed portion of the driving mechanism 100. On the other hand, the circuit component E is fixed on the base B and surrounds an optical axis O of the optical element, and three lower springs BS are arranged on the top side of the base B and connected to the carrier LH, wherein the circuit component E can be electrically connected to the coil C through the lower springs BS, thereby forming a loop.

[0094] It should be understood that the aforementioned carrier LH is movably accommodated in the shell H, and the aforementioned optical element (not shown) can be fixed in the carrier LH, wherein the aforementioned carrier LH constitutes a movable part that can move relative to the aforementioned fixed part (shell H and base B).

[0095] Specifically, the carrier LH is suspended in the driving mechanism 100 in a movable manner through the lower spring BS base B. Through the above-mentioned mechanism configuration, external light can enter the driving mechanism 100 along the optical axis O (Z-axis direction) of the optical element, and the light will pass through the optical lens and reach an image sensing element (not shown) located below the base B, thereby generating a digital image.

[0096] It should be particularly noted that the aforementioned frame F is fixed on the inner side of the shell H, wherein magnetic elements M (such as magnets) are respectively provided on the four sides of the frame F, and furthermore, a coil C is respectively provided on the four sides of the aforementioned carrier LH, corresponding to the aforementioned magnetic element M, wherein the aforementioned coil C and the magnetic element M can constitute a driving component.

[0097] When a current signal is applied to the aforementioned coil C, the magnetic force generated between the coil C and the magnetic element M can drive the carrier LH and the optical element disposed therein to move relative to the base B and the shell H along the optical axis O direction (Z-axis direction), thereby achieving the function of autofocus (AF) or optical image stabilization (OIS).

[0098] Depend on Figure 1 As can be seen from the figure, the first guide member R1 and the second guide member R2 are respectively a guide rod, and a first convex column B1 and a second convex column B2 are formed on the top side of the base B. Specifically, the first guide member R1 is fixed at the upper left corner of the base B and abuts against the first convex column B1, and the second guide member R2 is fixed at the lower right corner of the base B and abuts against the second convex column B2, wherein the first convex column B1 and the second convex column B2 are located on the opposite sides of the carrier LH.

[0099] On the other hand, a first recessed portion LH1 and a second recessed portion LH2 are formed on the aforementioned carrier LH, corresponding to the aforementioned first guide member R1 and the aforementioned second guide member R2 respectively. When the driving mechanism 100 is assembled, the aforementioned first guide member R1 will be clamped between the first boss B1 and the first recessed portion LH1, and the aforementioned second guide member R2 will be clamped between the second boss B2 and the second recessed portion LH2.

[0100] Please also read Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in Figure 5 An exploded view showing a magnetically conductive element K and a coil C before being mounted on a carrier LH, Figure 6 express Figure 3 and Figure 4 A top view of the driving mechanism 100 after removing the housing H and the frame F, Figure 7 A three-dimensional diagram showing that the magnetic conductive element K is fixed on the carrier LH, Figure 8 A three-dimensional diagram from another perspective showing the magnetic conductive element K fixed on the carrier LH.

[0101] from Figure 5 It can be seen that the first guide member R1 is clamped between the first boss B1 and the first recessed portion LH1, and the second guide member R2 is clamped between the second boss B2 and the second recessed portion LH2; on the other hand, a cross-shaped magnetic conductive element K is provided on the first mounting surface T1 of the carrier LH, and a first protrusion P1 and a second protrusion P2 are formed on the first mounting surface T1, wherein the first protrusion P1 has a first side surface P11, the second protrusion P2 has a second side surface P21, and the position of the magnetic conductive element K is between the first and second side surfaces P11 and P21.

[0102] It should be understood that the coil C will surround the first and second protrusions P1 and P2 after assembly, and the magnetic conductive element K will be located between the coil C and the first mounting surface T1 of the carrier LH. Since a magnetic attraction parallel to the X-axis direction is generated between the magnetic conductive element K and the magnetic element M adjacent thereto, the first guide R1 can be stably clamped between the first protrusion B1 and the first recess LH1, and the second guide R2 can also be stably clamped between the second protrusion B2 and the second recess LH2, thereby greatly improving the positioning accuracy and reliability of the driving mechanism 100.

[0103] like Figure 6 As shown, the base B of this embodiment is quadrilateral and has a first side BL1, a second side BL2, a third side BL3 and a fourth side BL4. The first side BL1 and the third side BL3 are parallel to the Y-axis direction, and the second side BL2 and the fourth side BL4 are parallel to the X-axis direction.

[0104] In addition, from Figure 5 , Figure 6 , Figure 7 and Figure 8 As can be seen in the figure, a pair of winding posts N are formed at two opposite corners of the carrier LH. During assembly, one end of four wires (not shown) can be wound around the winding posts N, and the other ends can be connected to four coils C. Then, the wires on the winding posts N can be electrically connected to the corresponding lower spring sheet BS below the winding posts N by welding or soldering. Figure 5 ); In this way, the aforementioned circuit component E can transmit the current signal to the aforementioned coil C through the lower spring BS.

[0105] In the present embodiment, the winding post N protrudes from the carrier LH in an extending direction, wherein the extending direction is inclined at about 45 degrees relative to the first side BL1 and the second side BL2 of the base B.

[0106] In addition, the first side surface P11 of the aforementioned first protrusion P1 is an inclined surface inclined at approximately 45 degrees relative to the first side BL1 and the second side BL2 of the base B, that is, the first side surface P11 is parallel to the extension direction of the winding column N, and the second side surface P21 of the aforementioned second protrusion P2 is a plane parallel to the second side BL2 and the fourth side BL4 of the base B.

[0107] In addition, from Figure 5It can be seen that a plurality of third protrusions P3 are formed on the second mounting surface T2 of the carrier LH, and another coil C will surround the aforementioned third protrusions P3 after assembly, and a third side surface P31 is formed on at least one of the third protrusions P3. The aforementioned third side surface P31 is adjacent to the second mounting surface T2 and is inclined at approximately 45 degrees relative to the first side edge BL1 and the second side edge BL2. It should be noted that the aforementioned third side surface P31 and the first side surface P11 are both parallel to the extension direction of the winding column N.

[0108] In one embodiment, the third side surface P31 and the first side surface P11 may not be parallel to each other, and an angle less than 10 degrees may be formed between the third side surface P31 and the first side surface P11.

[0109] It should be particularly noted that, in this embodiment, by forming the first and second protrusions P1 and P2 on the first mounting surface T1 of the carrier LH, glue can be applied between the first and second protrusions P1 and P2 during assembly to simultaneously bond the carrier LH, the magnetic element K and the coil C. Since a first side surface P1 inclined relative to the first side BL1 and the second side BL2 of the base B is formed on the first protrusion P1, the space for accommodating glue and the contact area between the glue and the carrier LH can be increased, thereby greatly improving the fixing effect of the magnetic element K and the coil C on the carrier LH.

[0110] Similarly, this embodiment forms a plurality of third protrusions P3 on the second mounting surface T2 of the carrier LH, and forms a third side surface P31 inclined relative to the first side BL1 and the second side BL2 of the base B on at least one of the third protrusions P3. In this way, the contact area between the glue and the carrier LH can be increased, thereby effectively fixing the coil C on the second mounting surface T2 of the carrier LH.

[0111] Please also refer to Figure 6 , Figure 7 and Fig. 9 ,in Fig. 9 express Figure 6 A partial enlarged view of the A1 area in .

[0112] like Figure 7 and Fig. 9As shown, the first recessed portion LH1 of the aforementioned carrier LH forms a V-shaped accommodating space, and has a first abutting surface S1, a second abutting surface S2, a third abutting surface S3 and a fourth abutting surface S4 for abutting the first guide member R1, wherein the first abutting surface S1 and the second abutting surface S2 are located at the same height position in the optical axis O direction (Z-axis direction) of the aforementioned optical element and are adjacent to each other, and the third abutting surface S3 and the fourth abutting surface S4 are located at the same height position in the optical axis O direction (Z-axis direction) of the aforementioned optical element and are adjacent to each other.

[0113] Specifically, the height positions of the first and second abutment surfaces S1 and S2 are higher than the height positions of the third and fourth abutment surfaces S3 and S4, and the first, second, third and fourth abutment surfaces S1, S2, S3 and S4 are inclined relative to the first side BL1 (Y-axis direction) and the second side BL2 (X-axis direction) of the base B.

[0114] In this embodiment, the first and third abutment surfaces S1 and S3 are inclined at approximately 45 degrees relative to the first side BL1 (Y-axis direction) and the second side BL2 (X-axis direction) of the base B, and the angles between the first and third abutment surfaces S1 and S3 and the second and fourth abutment surfaces S2 and S4 are approximately 90 degrees, but are not limited to those disclosed in the embodiments of the present utility model.

[0115] On the other hand, from Fig. 9 It can be seen that a first supporting surface B11 and a second supporting surface B12 which are perpendicular to each other are formed on the first convex column B1 of the base B, wherein the aforementioned first supporting surface B11 is roughly parallel to the second and fourth abutting surfaces S2 and S4 of the first recessed portion LH1 of the carrier LH, and the aforementioned second supporting surface B12 is roughly parallel to the first and third abutting surfaces S1 and S3 of the first recessed portion LH1 of the carrier LH.

[0116] Through the aforementioned structural design, this embodiment can make the first guide member R1 serve as a pivot and be clamped between the first and second bearing surfaces B11, B12 of the first boss B1 and the first, second, third and fourth abutment surfaces S1, S2, S3, S4 of the first recessed portion LH1 of the carrier LH; that is, in addition to being able to move along the Z-axis direction relative to the base B along the first guide member R1, the aforementioned carrier LH can also perform a small rotation relative to the base B through the first guide member R1.

[0117] Please also read Figure 6 , Figure 8 and Fig.10 ,in Fig.10 express Figure 6 A partial enlarged view of the A2 area in FIG.

[0118] like Figure 8 and Fig.10 As shown, the second recessed portion LH2 of the carrier LH forms a polygonal accommodation space for accommodating at least part of the second protruding column B2 and the second guide R2. In this embodiment, the second recessed portion LH2 has a first side surface Q1, a second side surface Q2, a third side surface Q3, a fourth side surface Q4 and a fifth side surface Q5. The first side surface Q1 and the fifth side surface Q5 are substantially parallel to the first and third side edges BL1 and BL3 (Y-axis direction) of the base B, the third side surface Q3 is substantially parallel to the second and fourth side edges BL2 and BL4 (X-axis direction), the second side surface Q2 connects the first and third side surfaces Q1 and Q3, and the fourth side surface Q4 connects the third and fifth side surfaces Q3 and Q5.

[0119] from Fig.10 It can be seen that the first side surface Q1, the second side surface Q2, the third side surface Q3, the fourth side surface Q4 and the fifth side surface Q5 face the second protruding column B2 and the second guide member R2. When the drive mechanism 100 is assembled, since a magnetic attraction parallel to the X-axis direction is generated between the magnetic conductive element K on the carrier LH and the magnetic element M adjacent thereto, the first side surface Q1 of the second recessed portion LH2 of the carrier LH is affected by the magnetic attraction and contacts the second guide member R2.

[0120] On the other hand, from Fig.10 It can also be seen that the second protrusion B2 of the base B forms a third supporting surface B21 and a fourth supporting surface B22 which are perpendicular to each other, wherein the aforementioned third supporting surface B21 is roughly parallel to the first and fifth side surfaces Q1 and Q5 of the second recessed portion LH2 of the carrier LH, and the aforementioned fourth supporting surface B22 is roughly parallel to the third side surface Q3 of the second recessed portion LH2 of the carrier LH.

[0121] It should be understood that when a current signal is applied to the aforementioned coil C, the magnetic force generated between the coil C and the magnetic element M can drive the carrier LH and the optical element disposed therein to slide along the first and second guide members R1 and R2 relative to the base B and the shell H, thereby achieving the function of autofocus (AF) or optical image stabilization (OIS).

[0122] In this embodiment, the second side surface Q2, the third side surface Q3, the fourth side surface Q4 and the fifth side surface Q5 of the second recessed portion LH2 of the carrier LH do not contact the second guide member R2 and the second protrusion B2, so as to avoid increasing the friction force of the carrier LH when sliding along the second guide member R2, thereby improving the efficiency of the driving mechanism 100.

[0123] Through the aforementioned structural design, in addition to using the first guide member R1 as a pivot, the second guide member R2 is clamped between the second boss B2 and the carrier LH in the X-axis direction, which not only greatly improves the stability of the carrier LH when moving along the Z-axis direction, but also effectively reduces the volume of the driving mechanism 100 and avoids interference between the first and second bosses B1, B2 and the coil C, thereby helping to achieve miniaturization of the driving mechanism 100.

[0124] Please see again Fig.11 ,in Fig.11 express Figure 5 A three-dimensional view of the magnetic conductive element K is shown.

[0125] like Fig.11 As shown, the magnetic conductive element K of this embodiment is roughly cross-shaped, and mainly includes a main body K1 and more than two extensions K2. The main body K1 extends toward the optical axis O direction (Z-axis direction) of the optical element, and the extensions K2 are connected to the main body K1 and extend from the opposite side of the main body K1 toward the Y-axis direction and the -Y-axis direction, respectively. Through the structural design of the extensions K2 of the magnetic conductive element K, the area of ​​the magnetic attraction generated between the magnetic conductive element K and the adjacent magnetic element M in the Y-axis direction and the -Y-axis direction is increased, so that the carrier LH can be more stable when moving in the Z-axis direction.

[0126] As mentioned above, this embodiment mainly relies on the magnetic force generated between the cross-shaped magnetic conductive element K and the adjacent magnetic element M to stably clamp the first guide member R1 between the first protrusion B1 and the first recess LH1, and also stably clamp the second guide member R2 between the second protrusion B2 and the second recess LH2, thereby greatly improving the positioning accuracy and reliability of the driving mechanism 100.

[0127] Although the embodiments and advantages of the present invention have been disclosed above, it should be understood that those skilled in the art may make changes, substitutions and modifications without departing from the spirit and scope of the present invention. In addition, the scope of protection of the present invention is not limited to the processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any technician in the relevant technical field can understand the current or future developed processes, machines, manufacturing, material compositions, devices, methods and steps from the disclosure of the present invention, as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present invention.

[0128] Therefore, the protection scope of the present invention includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes a separate embodiment, and the protection scope of the present invention also includes the combination of each claim and embodiment.

[0129] Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Those skilled in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the attached claims.

Claims

1. A driving mechanism for driving an optical element to move, characterized in that: include: A fixing portion, comprising a polygonal base, wherein the base has a first protrusion; a movable portion, wherein the optical element is disposed on the movable portion, and the movable portion has a first recessed portion; a driving assembly for driving the movable portion to move relative to the fixed portion; as well as A first guide member is sandwiched between the first protruding column and the first recessed portion to guide the movable portion to move relative to the fixed portion.

2. The driving mechanism according to claim 1, characterized in that: The fixing part also includes a shell connected to each other, the movable part is arranged in the shell, and the base has a first side, a second side, a third side and a fourth side, the first side and the third side are parallel to each other, and the second side and the fourth side are parallel to each other.

3. The driving mechanism according to claim 2, characterized in that: The first recessed portion is formed with a first abutting surface and a second abutting surface which are not parallel to each other and are used for abutting against the first guiding member.

4. The driving mechanism according to claim 3, characterized in that: The first abutting surface and the second abutting surface are not parallel to the first side edge and the second side edge.

5. The driving mechanism according to claim 3, characterized in that: The first recessed portion is further formed with a third abutting surface and a fourth abutting surface which are not parallel to each other and are used for abutting against the first guiding member.

6. The driving mechanism according to claim 5, characterized in that: Positions of the first abutting surface and the second abutting surface in an optical axis direction of the optical element are different from positions of the third abutting surface and the fourth abutting surface in the optical axis direction.

7. The driving mechanism according to claim 5, characterized in that: The first protrusion has a first bearing surface and a second bearing surface for abutting the first guide member. The first bearing surface is parallel to the second abutting surface and the fourth abutting surface, and the second bearing surface is parallel to the first abutting surface and the third abutting surface.

8. The driving mechanism according to claim 2, characterized in that: The driving mechanism further comprises a second guiding member, the base further comprises a second convex column, and the movable portion further comprises a second concave portion, wherein the second guiding member is sandwiched between the second convex column and the second concave portion.

9. The driving mechanism according to claim 8, characterized in that: The second recessed portion is formed with a first side surface which is parallel to the first side edge and abuts against the second guiding member.

10. The driving mechanism according to claim 9, characterized in that: The second recessed portion further forms a second side surface, a third side surface, a fourth side surface and a fifth side surface which do not contact the second guide member and the second protrusion, the second side surface connects the first side surface and the third side surface, and the fourth side surface connects the third side surface and the fifth side surface.

11. The driving mechanism according to claim 10, characterized in that: The second protrusion has a third bearing surface and a fourth bearing surface for abutting against the second guide member. The third bearing surface is parallel to the first side surface, and the fourth bearing surface is parallel to the third side surface.

12. The driving mechanism according to claim 8, characterized in that: The first protruding column and the second protruding column are located at two opposite corners of the base.

13. The driving mechanism according to claim 8, characterized in that: At least a portion of the second protrusion is located in the second recessed portion.

14. The driving mechanism according to claim 8, characterized in that: The first guide member and the second guide member are guide rods.

15. The driving mechanism according to claim 8, characterized in that: The driving mechanism also includes a magnetic conductive element, and the driving assembly includes at least one magnet arranged on the fixed part and at least one coil arranged on the movable part. The magnetic conductive element is arranged on a first mounting surface of the movable part and is located between the coil and the first mounting surface.

16. The driving mechanism according to claim 15, characterized in that: The movable portion has a first protrusion and a second protrusion, the first protrusion and the second protrusion protrude from the first mounting surface, and the coil surrounds the first protrusion and the second protrusion, wherein the first protrusion has a first side surface adjacent to the first mounting surface, and the first side surface is inclined relative to the first side edge and the second side edge of the base.

17. The driving mechanism according to claim 16, characterized in that: The movable portion also has a plurality of winding posts, and the plurality of winding posts protrude from the movable portion in an extending direction, and the first side surface is parallel to the extending direction.

18. The driving mechanism according to claim 16, characterized in that: The second protrusion has a second side surface adjacent to the first mounting surface. The second side surface is parallel to the second side edge, and the magnetic conductive element is located between the first side surface and the second side surface.

19. The driving mechanism according to claim 16, characterized in that: The driving component includes a plurality of magnets arranged on the fixed part and a plurality of coils arranged on the movable part, wherein the plurality of coils are respectively arranged on the first mounting surface and a second mounting surface of the movable part, and a third protrusion is formed on the second mounting surface, wherein one of the plurality of coils surrounds the third protrusion, and the third protrusion has a third side surface, wherein the third side surface is inclined relative to the first side edge and the second side edge of the base.

20. The driving mechanism according to claim 19, characterized in that: The first side surface and the third side surface are parallel to each other.

21. The driving mechanism according to claim 19, characterized in that: An included angle between the first side surface and the third side surface is less than 10 degrees.

22. The driving mechanism according to claim 15, characterized in that: The magnetic conductive element comprises a main body and a plurality of extension parts which are connected to each other. The main body extends toward an optical axis direction of the optical element, and the plurality of extension parts extend from the main body toward opposite directions.

23. The driving mechanism according to claim 22, characterized in that: The magnetic conductive element is in a cross shape.

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