Optical element driving mechanism

Abstract

The utility model discloses an optical element driving mechanism. The optical element driving mechanism comprises a fixed assembly, a movable part and a driving assembly, the fixing assembly is provided with a main shaft. The movable part is configured to be connected with an optical element, and the movable part can move relative to the fixed assembly. The driving assembly is configured to drive the movable part to move relative to the fixed assembly.

Description

Technical Field

[0001] The utility model relates to an optical element driving mechanism, in particular to an optical element driving mechanism with a piezoelectric element. Background Art

[0002] With the development of technology, many current electronic devices (such as smart phones) have functions of taking pictures or videos. Through the camera module provided on the electronic device, users can operate the electronic device to capture various photos.

[0003] The current design of electronic devices is constantly developing towards the trend of miniaturization, so that various components or their structures of the camera module must also be continuously reduced to achieve the purpose of miniaturization. Generally speaking, the driving mechanism in the camera module can have a lens carrier configured to carry a lens, and the driving mechanism can have functions of auto focusing or optical image stabilization. However, although the existing driving mechanisms can achieve the aforementioned functions of taking pictures or videos, they still cannot meet all requirements.

[0004] Therefore, how to design a camera module that can simultaneously perform auto focusing, optical image stabilization and achieve miniaturization is a topic worthy of discussion and solution today. Summary of the Utility Model

[0005] In view of this, the utility model provides an optical element driving mechanism to solve the above problems.

[0006] The utility model provides an optical element driving mechanism, including a fixed component, a movable part and a driving component. The fixed component has a main shaft. The movable part is configured to connect an optical element, and the movable part can move relative to the fixed component. The driving component is configured to drive the movable part to move relative to the fixed component.

[0007] According to some embodiments of the utility model, the optical element driving mechanism further includes a first guiding component configured to guide the movement of the movable part relative to the fixed component. The first guiding component includes a first stabilizing element, a first supporting element and a first corresponding element. The first stabilizing element has a magnetic material. The first supporting element has a magnetic conductive material. The first stabilizing element is configured to generate a first stabilizing force on the movable part. The first stabilizing force drives the movable part to lean against the first supporting element. The first corresponding element has a first accommodating space configured to accommodate at least a part of the first supporting element. The first corresponding element further includes a first contact part configured to contact the first supporting element. The first supporting element has a strip-shaped structure. The first supporting element extends along a first axial direction. When observed along the first axial direction, the center of the first supporting element does not overlap with the center of the first accommodating space.

[0008] According to some embodiments of the present utility model, when observed along the first axial direction, the minimum distance between a proximity portion of the first accommodation space and the first abutting element is less than the minimum distance between an avoidance portion of the first accommodation space and the first abutting element. When observed along the first axial direction, the proximity portion and the avoidance portion define a first imaginary line passing through the proximity portion and the avoidance portion. The first imaginary line is parallel to the first stabilizing force. When observed along the first axial direction, the first accommodation space has an elongated structure. When observed along the first axial direction, the extending direction of the first accommodation space is parallel to the first stabilizing force. The first corresponding element further includes a second accommodation space configured to accommodate at least a portion of the first abutting element. The first accommodation space and the second accommodation space are arranged along the first axial direction. The first corresponding element further has a second contact portion configured to contact the first abutting element. The first contact portion and the second contact portion are arranged along the first axial direction. The first corresponding element further has a first spacer portion located between the first accommodation space and the second accommodation space. The first spacer portion is located between the first contact portion and the second contact portion. The first spacer portion does not contact the first abutting element.

[0009] According to some embodiments of the present utility model, the optical element driving mechanism further includes a second guiding assembly configured to guide the movement of the movable portion relative to the fixed assembly. The second guiding assembly includes a second abutting element and a second corresponding element. The second corresponding element has a third accommodation space configured to accommodate at least a portion of the second abutting element. The second corresponding element has a third contact portion configured to contact the second abutting element. The second abutting element has an elongated structure. The second abutting element extends along the first axial direction. The second corresponding element further includes a fourth accommodation space configured to accommodate at least a portion of the second abutting element. The third accommodation space and the fourth accommodation space are arranged along the first axial direction. The second corresponding element further has a fourth contact portion configured to contact the second abutting element. The third contact portion and the fourth contact portion are arranged along the first axial direction. The second corresponding element further has a second spacer portion located between the third accommodation space and the fourth accommodation space. The second spacer portion is located between the third contact portion and the fourth contact portion. The second spacer portion does not contact the second abutting element. The shortest distance between the first accommodation space and the second accommodation space is different from the shortest distance between the third accommodation space and the fourth accommodation space. The shortest distance between the first accommodation space and the second accommodation space is less than the shortest distance between the third accommodation space and the fourth accommodation space.

[0010] According to some embodiments of the present utility model, when observed along the first axial direction, the shortest distance between the center of the first bearing element and the center of the optical element is different from the shortest distance between the center of the second bearing element and the center of the optical element. When observed along the first axial direction, the shortest distance between the center of the first bearing element and the center of the optical element is greater than the shortest distance between the center of the second bearing element and the center of the optical element. When observed along a direction perpendicular to the first axial direction, at least a part of the first accommodation space overlaps with the third accommodation space. When observed along a direction perpendicular to the first axial direction, the second accommodation space does not overlap with the fourth accommodation space.

[0011] According to some embodiments of the present utility model, the fixing assembly includes a housing and a base. The housing has a top wall and a side wall. The top wall is connected to the side wall. The top wall has a plate-like structure and is not parallel to the first axial direction. The first accommodation space is closer to the top wall than the second accommodation space. The third accommodation space is closer to the top wall than the fourth accommodation space. The second corresponding element also has a protrusion extending towards the base. The base has a plastic material. The fourth accommodation space is located in the protrusion. The first corresponding element and the second corresponding element have an integrally formed structure. The first stabilizing element is fixedly connected to the movable part. The first bearing element is fixedly connected to the fixing assembly. The second bearing element is fixedly connected to the fixing assembly.

[0012] According to some embodiments of the present utility model, the driving assembly includes a driving element, a conducting element, and an amplifying element. The driving element is fixedly connected between the conducting element and the amplifying element. The driving element is configured to generate a driving force. The driving element has a piezoelectric unit. The conducting element is configured to conduct the driving force. The amplifying element is configured to amplify the driving force. The conducting element has a long strip-shaped structure and extends along the main axis. The optical element driving mechanism further includes an intermediate assembly, and the driving force is transmitted to the movable part via the intermediate assembly. The intermediate assembly includes a clamping element and a contact assembly. The clamping element is configured to apply a first clamping force and a second clamping force to the conducting element. At least a part of the contact assembly is located between the clamping element and the conducting element. The clamping element applies the first clamping force and the second clamping force to the contact assembly. The directions of the first clamping force and the second clamping force are different. When taking the center of the conducting element as the origin, the angle between the first clamping force or the second clamping force and the first stabilizing force exceeds 90 degrees. When observed along the main axis, a connection line between the center of the first bearing element and the center of the conducting element passes through the optical element. The first stabilizing force belongs to a non-contact force. The first clamping force and the second clamping force belong to mechanical forces.

[0013] According to some embodiments of the present utility model, when observed along the main axis, a line connecting the center of the second abutting element and the center of the conduction element does not pass through the optical element. When observed along the main axis, a line connecting the center of the first abutting element and the center of the second abutting element passes through the optical element. When observed along the first axial direction, the first accommodating space has an elongated structure and extends along a second axial direction. The optical element driving mechanism further defines a third axial direction. The third axial direction, the first axial direction, and the second axial direction are perpendicular to each other. When observed along the first axial direction, the first stabilizing element and the first abutting element are arranged along the second axial direction. When observed along the first axial direction, a first ratio exists between the maximum dimension of the first accommodating space in the second axial direction and the maximum dimension of the first accommodating space in the third axial direction. When observed along the first axial direction, a second ratio exists between the maximum dimension of the third accommodating space in the second axial direction and the maximum dimension of the third accommodating space in the third axial direction. The first ratio is different from the second ratio. The first ratio is greater than the second ratio.

[0014] According to some embodiments of the present utility model, the optical element driving mechanism further includes a position sensing assembly configured to sense the movement of the movable part relative to the fixed part. The position sensing assembly includes a sensing element and a sensing magnet. The sensing element is fixedly disposed on the fixed part. The sensing magnet is fixedly disposed on the movable part. When observed along the main axis, a line connecting the center of the sensing element and the center of the conduction element does not pass through the optical element. When observed along the main axis, a line connecting the center of the sensing element and the center of the second abutting element does not pass through the optical element.

[0015] According to some embodiments of the present utility model, the optical element driving mechanism further includes a stopping assembly configured to limit the movement range of the movable part. The stopping assembly includes a first stopping element and a second stopping element. When the movable part is at a first extreme position, the first stopping element contacts the second stopping element. The stopping assembly further includes a third stopping element. When the movable part is at a second extreme position, the third stopping element is configured to abut against the top wall. When observed along a direction perpendicular to the main axis, the first stopping element overlaps at least a part of the second spaced part. When observed along a direction perpendicular to the main axis, the second stopping element overlaps at least a part of the second spaced part. When observed along a direction perpendicular to the main axis, the first stopping element does not overlap with the first spaced part. When observed along a direction perpendicular to the main axis, the second stopping element does not overlap with the first spaced part.

[0016] The present utility model provides an optical element driving mechanism, including a fixed part, a movable part, and a driving component. The movable part is movable relative to the fixed part, and the driving component is configured to drive the movable part to move relative to the fixed part. Furthermore, the optical element driving mechanism further includes an accommodating space configured to accommodate at least a part of the driving component.

[0017] In some embodiments, the optical element driving mechanism further includes a first guiding component and a second guiding component configured to guide the movement of the movable part. The first guiding component and the second guiding component respectively have a first bearing element and a second bearing element, which have a columnar structure (such as a cylindrical structure) and pass through the movable part to guide the movement of the movable part.

[0018] In some embodiments, the first bearing element can be made of a magnetically conductive material and can generate a first stabilizing force with the first stabilizing element on the movable part, which is applied to the movable part to avoid the problem of tilting of the movable part during movement. In addition, the second bearing element can be made of a metal material, and the second bearing element is arranged adjacent to the conducting element. Based on such a configuration, the problem that the movable part breaks the conducting element when the optical element driving mechanism is impacted can be avoided. That is, the second bearing element can absorb the impact force received by the movable part to protect the conducting element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model can be clearly understood through the following detailed description in conjunction with the drawings. It should be emphasized that, in accordance with the standard practice in the industry, the various features are not drawn to scale and are only for illustrative purposes. In fact, for the purpose of clear illustration, the dimensions of the various features may be arbitrarily enlarged or reduced.

[0020] Figure 1 FIG. 12 is a perspective view of an optical element driving mechanism 100 according to an embodiment of the present utility model.

[0021] Figure 2 FIG. 13 is an exploded view of the optical element driving mechanism 100 according to an embodiment of the present utility model.

[0022] Figure 3 FIG. 14 is a sectional view of the optical element driving mechanism 100 according to an embodiment of the present utility model along the line A-A in FIG. Figure 1 12.

[0023] Figure 4 FIG. 15 is a top view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present utility model.

[0024] Figure 5 FIG. 16 is an enlarged top view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present utility model.

[0025] Figure 6 FIG. 17 is a three-dimensional sectional view of the optical element driving mechanism 100 according to an embodiment of the present utility model along the line B-B in FIG. Figure 4 12.

[0026] Figure 7An enlarged upper view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present utility model.

[0027] Figure 8 It is a cross-sectional view of the optical element driving mechanism 100 according to an embodiment of the present utility model along the Figure 1 center line C-C.

[0028] Figure 9 It is a schematic diagram of the moving and abutting of the movable part 108 against the base 112 according to an embodiment of the present utility model.

[0029] The description of the reference numerals is as follows:

[0030] 100: Optical element driving mechanism

[0031] 102: Housing

[0032] 1021: Housing opening

[0033] 1023: Accommodating space

[0034] 106: Contact assembly

[0035] 1061: Contact element

[0036] 1062: Contact element

[0037] 107: Clamping element

[0038] 108: Movable part

[0039] 1081: First corresponding element

[0040] 1082: Second corresponding element

[0041] 1082P: Protrusion

[0042] 1083: First contact part

[0043] 1084: Second contact part

[0044] 1085: Third contact part

[0045] 1086: Fourth contact part

[0046] 1087: First spacer

[0047] 1088: Second spacer

[0048] 108H: Opening

[0049] 112: Base

[0050] 1121: Base opening

[0051] 112S: Accommodating space

[0052] 112W: Side wall

[0053] 114: Circuit component

[0054] 115: Photosensitive component

[0055] 120: First supporting element

[0056] 120C: Center

[0057] 130: First stabilizing element

[0058] 140: Second supporting element

[0059] 140C: Center

[0060] AD: Adhesive element

[0061] AS1: First accommodating space

[0062] AS2: Second accommodating space

[0063] AS3: Third accommodating space

[0064] AS4: Fourth accommodating space

[0065] ASC1: Center

[0066] ASP1: Proximity part

[0067] ASP2: Relief part

[0068] AX1: First axis

[0069] AX2: Second axis

[0070] AX3: Third axis

[0071] BA: Stopping component

[0072] BE1: First stopping element

[0073] BE2: Second stopping element

[0074] BE3: Third stopping element

[0075] CF1: First clamping force

[0076] CF2: Second clamping force

[0077] CL1: Connection line

[0078] CL2: Connection line

[0079] CL3: Connection line

[0080] CL4: Connection

[0081] CL5: Connection

[0082] D1: First direction

[0083] DA: Driving component

[0084] DS1: Shortest distance

[0085] DS2: Shortest distance

[0086] DS3: Shortest distance

[0087] DS4: Shortest distance

[0088] FA: Fixing component

[0089] GA1: First guiding component

[0090] GA2: Second guiding component

[0091] IL1: First imaginary line

[0092] MF1: First stabilizing force

[0093] MG: Sensing magnet

[0094] MX: Main shaft

[0095] O: Optical axis

[0096] PA1: Amplifying element

[0097] PA2: Driving element

[0098] PA3: Conducting element

[0099] PA31: Center

[0100] PH1: Perforation

[0101] SA: Position sensing component

[0102] SE: Sensing element

[0103] SEC: Center

[0104] SW: Side wall

[0105] TA: Intermediate component

[0106] TW: Top wall

[0107] X: X-axis

[0108] Y: Y-axis

[0109] Z: Z-axis Detailed implementation manners

[0110] The following discloses many different implementation methods or examples for implementing different features of the provided subject matter. The following describes embodiments of specific components and their arrangements to illustrate the present utility model. Of course, these embodiments are only for illustration and should not limit the scope of the present utility model. For example, in the specification, it is mentioned that a first feature component is formed on a second feature component, which may include an embodiment where the first feature component and the second feature component are in direct contact, and may also include an embodiment where there are other features between the first feature component and the second feature component. In other words, the first feature component and the second feature component are not in direct contact.

[0111] In addition, repeated reference numerals or labels may be used in different embodiments. These repetitions are only for simply and clearly describing the present utility model and do not represent a specific relationship between the different embodiments and / or structures being discussed. In addition, forming, connecting to, and / or coupling to another feature component on another feature component in the present utility model may include an embodiment where the feature components are formed in direct contact, and may also include an embodiment where additional feature components may be formed to insert between the above-mentioned feature components, such that the above-mentioned feature components may not be in direct contact. In addition, spatially related terms may be used, such as "vertical", "above", "on", "under", "bottom" and similar terms (such as "downwardly", "upwardly", etc.). These spatially related terms are for facilitating the description of the relationship between one (or some) element or feature and another (or some) element or feature in the drawings. These spatially related terms are intended to cover different orientations of the device including the features.

[0112] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those of ordinary skill in the art to which this disclosure pertains. It is understood that these terms, such as those defined in a commonly used dictionary, should be interpreted to have a meaning consistent with the relevant technology and the background or context of the present utility model, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0113] Furthermore, the ordinal numbers such as "first", "second", etc. used in the specification and claims to modify the elements of the claims do not themselves imply or represent that the claimed element has any previous ordinal number, nor do they represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of these ordinal numbers is only to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0114] In addition, in some embodiments of the present utility model, terms related to joining and connection, such as "connect" and "interconnect", unless otherwise specifically defined, may refer to two structures being in direct contact, or may also refer to two structures not being in direct contact, with other structures disposed between these two structures. And these terms related to joining and connection may also include cases where both structures are movable, or both structures are fixed.

[0115] Please refer to Figures 1 to 3 , Figure 1 FIG. 7 is a perspective view of an optical element driving mechanism 100 according to an embodiment of the present utility model, Figure 2 FIG. 8 is an exploded view of the optical element driving mechanism 100 according to an embodiment of the present utility model, and Figure 3 FIG. 9 is a sectional view of the optical element driving mechanism 100 according to an embodiment of the present utility model along Figure 1 line A-A in FIG. 8. The optical element driving mechanism 100 may be an optical imaging module configured to carry and drive an optical element (such as a lens, not shown in the figure). The optical element driving mechanism 100 can be installed in various electronic devices or portable electronic devices, such as being disposed in a smart phone for a user to perform an image capture function. In this embodiment, the optical element driving mechanism 100 may have an autofocus (AF) function, but the present utility model is not limited thereto. In other embodiments, the optical element driving mechanism 100 may also have autofocus (AF) and optical image stabilization (OIS) functions.

[0116] In this embodiment, the optical element driving mechanism 100 may include a fixed component FA, a movable part 108, and a driving component DA. The movable part 108 may have an opening 108H configured to connect and carry the aforementioned optical element (such as an optical lens, not shown in the figure), and the movable part 108 can move relative to the fixed component FA. The driving component DA is configured to drive the movable part 108 to move relative to the fixed component FA.

[0117] In this embodiment, as Figure 2 shown, the fixed component FA includes a housing 102 and a base 112. The aforementioned housing 102 has a hollow structure, and a housing opening 1021 is formed thereon. A base opening 1121 is formed on the base 112. The center of the housing opening 1021 corresponds to an optical axis O of the optical element, and the base opening 1121 corresponds to a photosensitive component 115 disposed below the base 112. External light can enter the housing 102 through the housing opening 1021, pass through the optical element and the base opening 1121, and then be received by the aforementioned photosensitive component 115 to generate a digital image signal. The photosensitive component 115 is, for example, an image sensor, but is not limited thereto.

[0118] Furthermore, the outer housing 102 and the base 112 are arranged along a main axis MX, and the outer housing 102 is disposed on the base 112, where the main axis MX can overlap or be parallel to the optical axis O. The outer housing 102 may have a receiving space 1023 for receiving components such as the movable part 108 and the driving assembly DA.

[0119] For example, the optical element driving mechanism 100 may further include a circuit assembly 114 fixedly disposed on a side wall 112W of the base 112, and a part of the circuit assembly 114 is received in the receiving space 1023. The circuit assembly 114 may be a circuit board, but is not limited thereto. For example, the circuit assembly 114 may also be a flexible circuit board.

[0120] In this embodiment, as Figure 2 and Figure 3 shown, the driving assembly DA is electrically connected to the circuit assembly 114 and electrically connected to an external circuit, such as an external control circuit, via the circuit assembly 114 to actuate according to the control signal of the external circuit, thereby driving the movable part 108 to move along the main axis MX or the optical axis O.

[0121] In this embodiment, as Figure 2 shown, the optical element driving mechanism 100 may further include a receiving space 112S configured to receive at least a part of the driving assembly DA. Specifically, as Figure 2 and Figure 3 shown, the driving assembly DA may include an amplifying element PA1, a driving element PA2, a conducting element PA3, and an intermediate assembly TA. Among them, the conducting element PA3 may have a long strip structure (columnar structure), extend along the main axis MX, and the conducting element PA3 may be made of carbon material, but is not limited thereto.

[0122] The amplifying element PA1 may be, for example, a counterweight, but is not limited thereto. In other embodiments, the amplifying element PA1 may also be a spring piece. The driving element PA2 may have a piezoelectric unit, such as a piezoelectric element, fixedly connected between the amplifying element PA1 and the conducting element PA3. In this embodiment, the driving element PA2 is made of ceramic material, but is not limited thereto.

[0123] The driving element PA2 is configured to generate a driving force, the amplifying element PA1 corresponds to the driving element PA2 to enhance the intensity of the driving force, and the conducting element PA3 is configured to conduct the driving force. The aforementioned driving force can be transmitted to the movable part 108 via the conducting element PA3 to drive the movable part 108 to move along the direction of the main axis MX to achieve the purpose of autofocus.

[0124] Furthermore, the intermediate component TA corresponds to the conductive element PA3, and the intermediate component TA is disposed between the conductive element PA3 and the movable part 108. As Figure 2 shown in Figure 3 Figure, the conductive element PA3 passes through the intermediate component TA and the movable part 108, and the movable part 108 clamps the conductive element PA3 through the intermediate component TA. Thus, the driving force can be sequentially transmitted to the movable part 108 via the conductive element PA3 and the intermediate component TA.

[0125] As Figure 3 shown in Figure, the optical element driving mechanism 100 further includes an adhesive element AD, and the driving assembly DA is connected to the housing 102 of the fixed assembly FA via the adhesive element AD. Specifically, the adhesive element AD directly contacts a top wall TW of the housing 102.

[0126] In this embodiment, the adhesive element AD can be an elastic glue, such as gel, but is not limited thereto. Based on such a configuration, while fixing the driving assembly DA, the actuation of the conductive element PA3 is not affected.

[0127] Next, please continue to refer to Figures 2 to 4 . Figure 4 is a top view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present invention. As Figure 2 shown in Figure, the intermediate component TA can include a contact component 106 and a clamping element 107, and the contact component 106 corresponds to the conductive element PA3 of the driving assembly DA and contacts the conductive element PA3.

[0128] As Figure 3 shown in Figure 4 Figure, at least a part of the contact component 106 is located between the clamping element 107 and the conductive element PA3, and the contact component 106 can include two contact elements 1061, 1063. In this embodiment, the contact elements 1061, 1063 can be, for example, metal spring pieces, and the clamping element 107 can be, for example, a rubber sleeve, but is not limited thereto.

[0129] In this embodiment, the clamping element 107 applies a clamping force to the two contact elements 1061, 1063. As Figure 4 shown in Figure, the clamping element 107 is configured to apply a first clamping force CF1 and a second clamping force CF2 to the conductive element PA3. Specifically, since the clamping element 107 clamps the conductive element PA3 through the contact element 1061, the clamping element 107 also applies the first clamping force CF1 and the second clamping force CF2 to the contact element 1061 of the contact component 106.

[0130] Among them, the directions of the first clamping force CF1 and the second clamping force CF2 are different. Similarly, the clamping element 107 also applies a third clamping force CF3 and a fourth clamping force CF4 to the contact element 1063 of the contact assembly 106, and the directions of the third clamping force CF3 and the fourth clamping force CF4 are different.

[0131] Please continue to refer to Figures 2 to 4 . In this embodiment, as Figure 3 shown, since the driving assembly DA is disposed on the left side of the movable part 108, when the driving assembly DA drives the movable part 108 to move along the main shaft MX, it is possible that the right side part of the movable part 108 tilts towards the base 112, thereby causing the problem of unclear image.

[0132] To avoid the above situation, the optical element driving mechanism 100 may further include a first guiding assembly GA1 to avoid the problem of tilting of the movable part 108 during movement. The first guiding assembly GA1 is configured to guide the movable part 108 to move relative to the fixed assembly FA.

[0133] In this embodiment, as Figure 2 and Figure 4 shown, the first guiding assembly GA1 may include a first stabilizing element 130, a first supporting element 120, and a first corresponding element 1081. The first stabilizing element 130 may be made of a magnetic material, such as a magnet, but is not limited thereto. Correspondingly, the first supporting element 120 is made of a magnetically conductive material, such as a magnetically conductive metal material, but is not limited thereto.

[0134] The first stabilizing element 130 is configured to induce with the first supporting element 120 to generate a first stabilizing force MF1 on the movable part 108, and the first stabilizing force MF1 can drive the movable part 108 to lean against the first supporting element 120 to increase the frictional force between the movable part 108 and the first supporting element 120.

[0135] Based on such a design, this frictional force can avoid the aforementioned tilting problem of the movable part 108 during movement, and this frictional force does not affect the smoothness of the movement of the movable part 108 along the main shaft MX.

[0136] In addition, as Figure 4 shown, the first clamping force CF1 is, for example, parallel to the Y axis, the second clamping force CF2 is, for example, parallel to the X axis, and the first stabilizing force MF1 is not parallel to the X axis and the Y axis. For example, when taking the center PA31 of the conduction element PA3 as the origin, the angle between the first clamping force CF1 or the second clamping force CF2 and the first stabilizing force MF1 exceeds 90 degrees, such as between 125 degrees and 140 degrees, but is not limited thereto.

[0137] Among them, the first stabilizing force MF1 is a magnetic suction force, that is, the first stabilizing force MF1 belongs to a non-contact force, while the first clamping force CF1 and the second clamping force CF2 belong to mechanical forces.

[0138] In addition, when observing along the main axis MX, a connection line CL1 between a center 120C of the first abutting element 120 and a center PA31 of the conduction element PA3 passes through the optical element, for example, passes through the optical axis O, but is not limited thereto.

[0139] Next, please continue to refer to Figures 2 to 6 . Figure 5 is an enlarged upper view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present invention, and Figure 6 is a three-dimensional sectional view of the optical element driving mechanism 100 according to an embodiment of the present invention along Figure 4 the line segment B-B in

[0140] As Figure 5 and Figure 6 shown, the first corresponding element 1081 is a part of the movable part 108, and the first corresponding element 1081 may have a first accommodation space AS1 configured to accommodate at least a part of the first abutting element 120.

[0141] Furthermore, the first corresponding element 1081 may further include a first contact portion 1083 configured to contact the first abutting element 120. As Figure 6 shown, the first abutting element 120 may have an elongated structure, and the first abutting element 120 extends along a first axial direction AX1.

[0142] As Figure 5 shown, when observing along the first axial direction AX1 (Z-axis), the center 120C of the first abutting element 120 does not overlap with a center ASC1 of the first accommodation space AS1. Specifically, when observing along the first axial direction AX1, a minimum distance between a proximal portion ASP1 of the first accommodation space AS1 and the first abutting element 120 is less than a minimum distance between an escape portion ASP2 of the first accommodation space AS1 and the first abutting element 120.

[0143] Among them, the first accommodation space AS1 is formed by a through hole PH1 of the movable part 108, and the proximal portion ASP1 and the escape portion ASP2 may be inner wall surfaces of the through hole PH1, but are not limited thereto.

[0144] As Figure 5 shown, when observing along the first axial direction AX1, the proximal portion ASP1 and the escape portion ASP2 may define a first imaginary line IL1 passing through the proximal portion ASP1 and the escape portion ASP2, and the first imaginary line IL1 is parallel to the first stabilizing force MF1.

[0145] When viewed along the first axial direction AX1, the first receiving space AS1 may have an elongated structure. Specifically, the first receiving space AS1 may be oval. When viewed along the first axial direction AX1, the extending direction of the first receiving space AS1 (the major axis of the oval) is parallel to the first stabilizing force MF1.

[0146] Next, as shown in FIG. 6, the first corresponding element 1081 may further include a second receiving space AS2 configured to receive at least a portion of the first abutting element 120, and the first receiving space AS1 and the second receiving space AS2 are arranged along the first axial direction AX1.

[0147] Similarly, the first corresponding element 1081 may further have a second contact portion 1084 configured to contact the first abutting element 120, and the first contact portion 1083 and the second contact portion 1084 may also be arranged along the first axial direction AX1.

[0148] In addition, the first corresponding element 1081 may further have a first spacing portion 1087 located between the first receiving space AS1 and the second receiving space AS2, and the first spacing portion 1087 is also located between the first contact portion 1083 and the second contact portion 1084. In this embodiment, the first spacing portion 1087 may be the inner wall surface of the movable portion 108 between the first receiving space AS1 and the second receiving space AS2 and does not contact the first abutting element 120.

[0149] In this embodiment, as Figure 4 and Figure 6 shown, the optical element driving mechanism 100 may further include a second guiding assembly GA2 configured to guide the movement of the movable portion 108 relative to the fixed assembly FA. The second guiding assembly GA2 may include a second abutting element 140 and a second corresponding element 1082.

[0150] The second corresponding element 1082 is also a part of the movable portion 108, that is, the first corresponding element 1081 and the second corresponding element 1082 have an integrally formed structure. As Figure 4 and Figure 6 shown, the second corresponding element 1082 has a third receiving space AS3 configured to receive at least a portion of the second abutting element 140.

[0151] Similarly, the second corresponding element 1082 has a third contact portion 1085 configured to contact the second abutting element 140. The second abutting element 140 has an elongated structure, and the second abutting element 140 is extendable along the first axial direction AX1.

[0152] In this embodiment, the first stabilizing element 130 is fixedly connected to the movable part 108, the first abutting element 120 is fixedly connected to the base 112 of the fixed assembly FA, and the second abutting element 140 is fixedly connected to the base 112 of the fixed assembly FA.

[0153] Similarly, as Figure 6 shown, the second corresponding element 1082 may further include a fourth receiving space AS4 configured to receive at least a part of the second abutting element 140, and the third receiving space AS3 and the fourth receiving space AS4 are arranged along the first axial direction AX1.

[0154] Furthermore, the second corresponding element 1082 may further have a fourth contact portion 1086 configured to contact the second abutting element 140, and the third contact portion 1085 and the fourth contact portion 1086 are arranged along the first axial direction AX1.

[0155] Similarly, the second corresponding element 1082 has a second spacing portion 1088 located between the third receiving space AS3 and the fourth receiving space AS4, and the second spacing portion 1088 is also located between the third contact portion 1085 and the fourth contact portion 1086. In this embodiment, the second spacing portion 1088 does not contact the second abutting element 140.

[0156] As Figure 6 shown, a shortest distance DS1 between the first receiving space AS1 and the second receiving space AS2 is different from a shortest distance DS2 between the third receiving space AS3 and the fourth receiving space AS4.

[0157] Specifically, the shortest distance DS1 between the first receiving space AS1 and the second receiving space AS2 is less than the shortest distance DS2 between the third receiving space AS3 and the fourth receiving space AS4.

[0158] As Figure 6 shown, when observed along a direction perpendicular to the first axial direction AX1 (for example, along a first direction D1), at least a part of the first receiving space AS1 overlaps with the third receiving space AS3.

[0159] On the other hand, when observed along a direction perpendicular to the first axial direction AX1 (for example, along the first direction D1), the second receiving space AS2 does not overlap with the fourth receiving space AS4.

[0160] Then, back to Figure 4 And Figure 5 . In this embodiment, the first axial direction AX1 may be parallel to the main axis MX, but is not limited thereto. As Figure 4As shown, when viewed along the first axial direction AX1, the shortest distance DS3 between the center 120C of the first bearing element 120 and the center of the optical element (such as the optical axis O) is different from the shortest distance DS4 between the center 140C of the second bearing element 140 and the center of the optical element.

[0161] Specifically, when viewed along the first axial direction AX1, the shortest distance DS3 between the center 120C of the first bearing element 120 and the center of the optical element is greater than the shortest distance DS4 between the center 140C of the second bearing element 140 and the center of the optical element.

[0162] Furthermore, as Figure 4 shown, when viewed along the main axis MX, a connecting line CL2 between the center 140C of the second bearing element 140 and the center PA31 of the conduction element PA3 does not pass through the optical element. That is, the connecting line CL2 does not pass through the opening 108H.

[0163] In addition, when viewed along the main axis MX, a connecting line CL3 between the center 120C of the first bearing element 120 and the center 140C of the second bearing element 140 passes through the optical element. That is, the connecting line CL3 passes through the opening 108H.

[0164] It should be noted that the first bearing element 120 is closer to the optical axis O than the first stabilizing element 130, and the second bearing element 140 is closer to the optical axis O than the conduction element PA3. Based on such a configuration, not only can the overall stability be effectively improved, but also through a special spatial design, the volume required for the optical element driving mechanism 100 can be reduced, thereby achieving the purpose of miniaturization.

[0165] Furthermore, as Figure 5 shown, when viewed along the first axial direction AX1, the first accommodation space AS1 has an elongated structure and extends along a second axial direction AX2. That is, the major axis of the first accommodation space AS1 (elliptical) overlaps with the second axial direction AX2.

[0166] In this embodiment, the optical element driving mechanism 100 may further define a third axial direction AX3, and the third axial direction AX3, the first axial direction AX1, and the second axial direction AX2 are perpendicular to each other.

[0167] As Figure 5 shown, when viewed along the first axial direction AX1 or the main axis MX, the first stabilizing element 130 and the first bearing element 120 are arranged along the second axial direction AX2.

[0168] When viewed along the first axial direction AX1, the maximum dimension of the first accommodation space AS1 in the second axial direction AX2 and the maximum dimension of the first accommodation space AS1 in the third axial direction AX3 may have a first ratio.

[0169] Similarly, when viewed along the first axial direction AX1, as Figure 4 shown, the maximum dimension of the third accommodation space AS3 in the second axial direction AX2 and the maximum dimension of the third accommodation space AS3 in the third axial direction AX3 may have a second ratio.

[0170] Wherein, the first ratio is different from the second ratio. Specifically, the first ratio is greater than the second ratio. In this embodiment, since the first accommodation space AS1 has an elliptical structure, the first ratio is greater than 1, while the second accommodation space AS2 has a circular structure, so the second ratio can be 1.

[0171] Next, please refer to Figure 2 and Figure 7 . Figure 7 FIG. is an enlarged upper view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present invention. In this embodiment, the optical element driving mechanism 100 further includes a position sensing assembly SA configured to sense the movement of the movable portion 108 relative to the fixed assembly FA.

[0172] As Figure 7 shown, the position sensing assembly SA may include a sensing element SE and a sensing magnet MG. The sensing element SE is fixedly disposed on a circuit component 114 on the base 112 of the fixed assembly FA, and the sensing magnet MG is fixedly disposed on the movable portion 108. Among them, the sensing element SE can be, for example, a Hall sensor or a tunneling magnetoresistance sensor (TMR sensor), and the sensing magnet MG can be, for example, a multi-pole magnet, but is not limited thereto.

[0173] When viewed along the main axis MX, a connection line CL4 between a center SEC of the sensing element SE and a center PA31 of the conduction element PA3 does not pass through the optical element. That is, the connection line CL4 does not pass through the opening 108H.

[0174] Furthermore, when viewed along the main axis MX, a connection line CL5 between the center SEC of the sensing element SE and the center 140C of the second abutting element 140 also does not pass through the optical element. That is, the connection line CL5 does not pass through the opening 108H.

[0175] Next, please refer to Figures 8 to 9 . Figure 8 FIG. is a cross-sectional view of the optical element driving mechanism 100 according to an embodiment of the present invention along the Figure 1 line segment C-C in Figure 9 and FIG. is a schematic diagram of the movable portion 108 moving and abutting against the base 112 according to an embodiment of the present invention.

[0176] As Figure 8As shown, the housing 102 has the aforementioned top wall TW and a side wall SW. The top wall TW is connected to the side wall SW, and the top wall TW has a plate-like structure that is not parallel to the first axis AX1, for example, perpendicular to the first axis AX1.

[0177] As Figure 8 shown, the first accommodation space AS1 is closer to the top wall TW than the second accommodation space AS2, and the third accommodation space AS3 is closer to the top wall TW than the fourth accommodation space AS4.

[0178] Furthermore, in this embodiment, the second corresponding element 1082 also has a protrusion 1082P extending towards the base 112. Wherein, the base 112 can be made of plastic material, and the fourth accommodation space AS4 is located at the protrusion 1082P.

[0179] Next, as Figure 8 and Figure 9 shown, in this embodiment, the optical element driving mechanism 100 may further include a stop assembly BA configured to limit the movement range of the movable part 108. Wherein, the stop assembly BA may include a first stop element BE1 and a second stop element BE2.

[0180] The first stop element BE1 can be a protrusion at the bottom of the movable part 108, and the second stop element BE2 can be located on the base 112 (for example, the top surface of the base 112). As Figure 9 shown, when the movable part 108 is at a first limit position, the first stop element BE1 contacts the second stop element BE2.

[0181] As Figure 9 shown, when viewed along a direction perpendicular to the main axis MX (for example, when viewed along the X-axis), the first stop element BE1 overlaps at least a part of the second spacer 1088, and when viewed along a direction perpendicular to the main axis MX, the second stop element BE2 overlaps at least a part of the second spacer 1088.

[0182] On the other hand, when viewed along a direction perpendicular to the main axis MX, the first stop element BE1 does not overlap with the first spacer 1087, and when viewed along a direction perpendicular to the main axis MX, the second stop element BE2 does not overlap with the first spacer 1087.

[0183] Furthermore, as Figure 8 shown, when the movable part 108 moves back to Figure 8 a second limit position, the first stop element BE1 does not contact the second stop element BE2. Additionally, the stop assembly BA may further include a third stop element BE3 located at the top of the movable part 108, and when the movable part 108 is at Figure 8When in the second limit position, the third stop element BE3 is configured to abut against the top wall TW to limit the movement range of the movable part 108.

[0184] In summary, the present utility model provides an optical element driving mechanism 100, including a fixed assembly FA, a movable part 108, and a driving assembly DA. The movable part 108 is movable relative to the fixed assembly FA, and the driving assembly DA is configured to drive the movable part 108 to move relative to the fixed assembly FA. Furthermore, the optical element driving mechanism further includes an accommodation space 112S configured to accommodate at least a part of the driving assembly DA.

[0185] In some embodiments, the optical element driving mechanism 100 further includes a first guiding assembly GA1 and a second guiding assembly GA2 configured to guide the movement of the movable part 108. The first guiding assembly GA1 and the second guiding assembly GA2 respectively have a first abutting element 120 and a second abutting element 140, having a columnar structure (such as a cylindrical structure) and passing through the movable part 108 to guide the movement of the movable part 108.

[0186] In some embodiments, the first abutting element 120 can be made of a magnetically conductive material and can generate a first stabilizing force MF1 with the first stabilizing element 130 on the movable part 108, which is applied to the movable part 108 to avoid the problem of the movable part 108 tilting during movement. In addition, the second abutting element 140 can be made of a metal material, and the second abutting element 140 is disposed adjacent to the conduction element PA3. Based on such a configuration, the problem that the movable part 108 breaks the conduction element PA3 when the optical element driving mechanism 100 is impacted can be avoided. That is, the second abutting element 140 can absorb the impact force received by the movable part 108 to protect the conduction element PA3.

[0187] Although the embodiments of the present utility model and their advantages have been disclosed above, it should be understood that any person of ordinary skill in the art can make changes, substitutions, and modifications without departing from the spirit and scope of the present utility model. In addition, the protection scope of the present utility model is not limited to the processes, machines, manufactures, compositions of matter, devices, methods, and steps in the specific embodiments described in the specification. Any person of ordinary skill in the art can understand the processes, machines, manufactures, compositions of matter, devices, methods, and steps developed currently or in the future from the disclosure of the present utility model. As long as they can perform substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present utility model. Therefore, the protection scope of the present utility model includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods, and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the present utility model also includes the combination of each claim and embodiment.

Claims

1. An optical element driving mechanism, characterized in that, Comprising: A fixed component having a main shaft; A movable part configured to be connected to an optical element, and the movable part is movable relative to the fixed component; and A driving component configured to drive the movable part to move relative to the fixed component; The optical element driving mechanism further includes a first guiding component configured to guide the movement of the movable part relative to the fixed component; The first guiding component includes a first stabilizing element, a first abutting element, and a first corresponding element; The first stabilizing element has a magnetic material; The first abutting element has a magnetically conductive material; The first stabilizing element is configured to generate a first stabilizing force on the movable part; The first stabilizing force drives the movable part to abut against the first abutting element; The first corresponding element has a first accommodating space configured to accommodate at least a part of the first abutting element.

2. The optical element driving mechanism according to claim 1, wherein The first corresponding element further includes a first contact portion configured to contact the first abutting element; The first abutting element has a strip-shaped structure; The first abutting element extends along a first axial direction; When observed along the first axial direction, the center of the first abutting element does not overlap with the center of the first accommodating space.

3. The optical element driving mechanism according to claim 2, wherein When observed along the first axial direction, the minimum distance between a proximity portion of the first accommodating space and the first abutting element is less than the minimum distance between an avoidance portion of the first accommodating space and the first abutting element; When observed along the first axial direction, the proximity portion and the avoidance portion define a first imaginary line passing through the proximity portion and the avoidance portion; The first imaginary line is parallel to the first stabilizing force; When observed along the first axial direction, the first accommodating space has a strip-shaped structure; When observed along the first axial direction, the extending direction of the first accommodating space is parallel to the first stabilizing force; The first corresponding element further includes a second accommodating space configured to accommodate at least a part of the first abutting element; The first accommodating space and the second accommodating space are arranged along the first axial direction; The first corresponding element further has a second contact portion configured to contact the first abutting element; The first contact portion and the second contact portion are arranged along the first axial direction; The first corresponding element further has a first spacing portion located between the first accommodating space and the second accommodating space; The first spacing portion is located between the first contact portion and the second contact portion; The first spacing portion does not contact the first abutting element.

4. The optical element driving mechanism according to claim 3, wherein The optical element driving mechanism further includes a second guiding component configured to guide the movement of the movable part relative to the fixed component; The second guiding component includes a second abutting element and a second corresponding element; The second corresponding element has a third accommodating space configured to accommodate at least a part of the second abutting element; The second corresponding element has a third contact portion configured to contact the second abutting element; The second abutting element has a strip-shaped structure; The second abutting element extends along the first axial direction; The second corresponding element further includes a fourth accommodation space configured to accommodate at least a part of the second abutting element; The third accommodation space and the fourth accommodation space are arranged along the first axial direction; The second corresponding element further has a fourth contact portion configured to contact the second abutting element; The third contact portion and the fourth contact portion are arranged along the first axial direction; The second corresponding element further has a second spacing portion located between the third accommodation space and the fourth accommodation space; The second spacing portion is located between the third contact portion and the fourth contact portion; The second spacing portion does not contact the second abutting element; The shortest distance between the first accommodation space and the second accommodation space is different from the shortest distance between the third accommodation space and the fourth accommodation space; The shortest distance between the first accommodation space and the second accommodation space is less than the shortest distance between the third accommodation space and the fourth accommodation space.

5. The optical element driving mechanism according to claim 4, wherein When observed along the first axial direction, the shortest distance between the center of the first abutting element and the center of the optical element is different from the shortest distance between the center of the second abutting element and the center of the optical element; When observed along the first axial direction, the shortest distance between the center of the first abutting element and the center of the optical element is greater than the shortest distance between the center of the second abutting element and the center of the optical element; When observed along a direction perpendicular to the first axial direction, at least a part of the first accommodation space overlaps with the third accommodation space; When observed along a direction perpendicular to the first axial direction, the second accommodation space does not overlap with the fourth accommodation space.

6. The optical element driving mechanism according to claim 5, wherein The fixing assembly includes a housing and a base; The housing has a top wall and a side wall; The top wall is connected to the side wall; The top wall has a plate-like structure and is not parallel to the first axial direction; The first accommodation space is closer to the top wall than the second accommodation space; The third accommodation space is closer to the top wall than the fourth accommodation space; The second corresponding element further has a protrusion extending towards the base; The base has a plastic material; The fourth accommodation space is located in the protrusion; The first corresponding element and the second corresponding element have an integrally formed structure; The first stabilizing element is fixedly connected to the movable part; The first abutting element is fixedly connected to the fixing assembly; The second abutting element is fixedly connected to the fixing assembly.

7. The optical element driving mechanism according to claim 6, wherein The driving assembly includes a driving element, a conducting element, and an amplifying element; The driving element is fixedly connected between the conducting element and the amplifying element; The driving element is configured to generate a driving force; The driving element has a piezoelectric unit; The conducting element is configured to conduct the driving force; The amplifying element is configured to amplify the driving force; The conducting element has a long strip structure and extends along the main axis; The optical element driving mechanism further includes an intermediate assembly, and the driving force is transmitted to the movable part through the intermediate assembly; The intermediate assembly includes a clamping element and a contact assembly; The clamping element is configured to apply a first clamping force and a second clamping force to the conductive element; At least a portion of the contact assembly is located between the clamping element and the conductive element; The clamping element applies the first clamping force and the second clamping force to the contact assembly; The directions of the first clamping force and the second clamping force are different; When taking the center of the conductive element as the origin, the angle between the first clamping force or the second clamping force and the first stabilizing force exceeds 90 degrees; When observing along the main axis, a line connecting the center of the first bearing element and the center of the conductive element passes through the optical element; The first stabilizing force belongs to a force at a distance; The first clamping force and the second clamping force belong to mechanical forces.

8. The optical element driving mechanism according to claim 7, wherein When observing along the main axis, a line connecting the center of the second bearing element and the center of the conductive element does not pass through the optical element; When observing along the main axis, a line connecting the center of the first bearing element and the center of the second bearing element passes through the optical element; When observing along the first axial direction, the first accommodating space has an elongated structure and extends along a second axial direction; The optical element driving mechanism further defines a third axial direction; The third axial direction, the first axial direction, and the second axial direction are perpendicular to each other; When observing along the first axial direction, the first stabilizing element and the first bearing element are arranged along the second axial direction; When observing along the first axial direction, the maximum dimension of the first accommodating space in the second axial direction and the maximum dimension of the first accommodating space in the third axial direction have a first ratio; When observing along the first axial direction, the maximum dimension of the third accommodating space in the second axial direction and the maximum dimension of the third accommodating space in the third axial direction have a second ratio; The first ratio is different from the second ratio; The first ratio is greater than the second ratio.

9. The optical element driving mechanism according to claim 8, wherein The optical element driving mechanism further includes a position sensing assembly configured to sense the movement of the movable part relative to the fixed part; The position sensing assembly includes a sensing element and a sensing magnet; The sensing element is fixedly arranged on the fixed part; The sensing magnet is fixedly arranged on the movable part; When observing along the main axis, a line connecting the center of the sensing element and the center of the conductive element does not pass through the optical element; When observing along the main axis, a line connecting the center of the sensing element and the center of the second bearing element does not pass through the optical element.

10. The optical element driving mechanism according to claim 9, wherein The optical element driving mechanism further includes a stopping assembly configured to limit the movement range of the movable part; The stopping assembly includes a first stopping element and a second stopping element; When the movable part is at a first limit position, the first stopping element contacts the second stopping element; The stopping assembly further includes a third stopping element; When the movable part is at a second limit position, the third stopping element is configured to abut against the top wall; When viewed along a direction perpendicular to the main axis, the first stop element overlaps at least a part of the second spacer portion; When viewed along a direction perpendicular to the main axis, the second stop element overlaps at least a part of the second spacer portion; When viewed along a direction perpendicular to the main axis, the first stop element does not overlap with the first spacer portion; When viewed along a direction perpendicular to the main axis, the second stop element does not overlap with the first spacer portion.

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