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 a driving mechanism for an optical element, and particularly to a driving mechanism for an optical element 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 arranged on the electronic device, users can operate the electronic device to capture various photos.

[0003] The design of current electronic devices is constantly trending towards 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 exploration and solution today. Summary of the Utility Model

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

[0006] The utility model provides a driving mechanism for an optical element, 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 present utility model, the optical element driving mechanism further includes an accommodation space configured to accommodate at least a part of the driving assembly. The accommodation space has a first opening formed on a first surface. The accommodation space has a second opening formed on a second surface. The first surface and the second surface are located on the fixing assembly. The first surface and the second surface face different directions. The first surface and the second surface are not parallel to each other. When observed along a first axial direction, the first surface overlaps at least a part of the driving assembly. When observed along a second axial direction, the second surface does not overlap the driving assembly. The first axial direction is perpendicular to the second axial direction. The first opening is connected to the second opening. The first opening has a first narrow portion with a tapered structure. The second opening has a second narrow portion with a tapered structure. When observed along the first axial direction, the second narrow portion overlaps at least a part of the driving assembly. When observed along the first axial direction, the first narrow portion overlaps at least a part of the driving assembly. The first narrow portion is connected to the second narrow portion.

[0008] According to some embodiments of the present utility model, the accommodation space further has a setting portion. The driving assembly is disposed on the setting portion and located at a preset position. The setting portion has a planar structure. The setting portion is parallel to the first surface. The accommodation space further has a first guiding portion configured to guide the driving assembly to be located at the preset position. The first guiding portion is adjacent to the setting portion. The first guiding portion has a first planar structure, and the first planar structure is not parallel to the setting portion. The first guiding portion is not perpendicular to the setting portion. The accommodation space further has a second guiding portion configured to guide the driving assembly to be located at the preset position. The second guiding portion is adjacent to the setting portion. The second guiding portion has a second planar structure, and the second planar structure is not parallel to the setting portion. The second guiding portion is not perpendicular to the setting portion. The first guiding portion and the second guiding portion are not parallel to each other. The first guiding portion and the second guiding portion are not perpendicular to each other. The optical element is not located in the accommodation space.

[0009] 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 configured to generate a driving force. The conducting element is configured to conduct the driving force. The driving force is transmitted to the movable portion via the conducting element. The conducting element has a long strip structure and extends along the main axis. The amplifying element corresponds to the driving element to enhance the intensity of the driving force. When observed along the first axial direction, the first surface overlaps at least a part of the conducting element. When observed along the second axial direction, the second surface does not overlap at least a part of the conducting element.

[0010] According to some embodiments of the present utility model, the optical element driving mechanism further includes a first bonding element, and the driving assembly is connected to the setting portion via the first bonding element. The first bonding element directly contacts the first guiding portion. The first bonding element directly contacts the second guiding portion. The first bonding element directly contacts the amplification element. The optical element driving mechanism further includes a second bonding element, and the driving assembly is connected to the first opening via the second bonding element. The second bonding element directly contacts the first surface. The second bonding element directly contacts the first narrow portion. The second bonding element directly contacts the conductive element. The first surface is not perpendicular to the extending direction of the conductive element.

[0011] According to some embodiments of the present utility model, the optical element driving mechanism further includes a third bonding element, and the driving assembly is connected and fixed to the fixing assembly via the third bonding element. The third bonding element directly contacts a first bonding portion of the fixing assembly. The first bonding portion has a planar structure facing the driving assembly. The third bonding element directly contacts a second bonding portion of the driving assembly. The second bonding portion has a planar structure facing the first bonding portion. The first bonding portion and the second bonding portion are not parallel to each other. Wherein, the optical element driving mechanism further includes an intermediate assembly disposed between the conductive element and the movable portion. The driving force is sequentially conducted to the movable portion via the conductive element and the intermediate assembly. The intermediate assembly includes a contact element corresponding to the driving assembly. The intermediate assembly further includes a force applying element that applies a supporting force to the contact element. The force applying element has a first outwardly supporting portion disposed between the contact element and the movable portion. The force applying element further has a second outwardly supporting portion disposed between the contact element and the movable portion. The force applying element further has a retracted portion, and the first outwardly supporting portion is connected to the second outwardly supporting portion via the retracted portion. The maximum distance between the first outwardly supporting portion and the movable portion is different from the minimum distance between the retracted portion and the movable portion. The maximum distance between the first outwardly supporting portion and the movable portion is less than the minimum distance between the retracted portion and the movable portion.

[0012] According to some embodiments of the present utility model, the optical element driving mechanism further includes a fourth bonding element. The intermediate assembly is connected to the movable portion via the fourth bonding element. The fourth bonding element directly contacts the force applying element. The fourth bonding element directly contacts the retracted portion. At least a part of the fourth bonding element is located in a gap formed between the retracted portion and the movable portion. The first bonding element and the second bonding element are made of the same material. The second bonding element and the third bonding element are made of the same material. The third bonding element and the fourth bonding element are made of the same material. The first bonding element and the fourth bonding element are made of the same material.

[0013] According to some embodiments of the present utility model, the driving assembly further includes a fifth bonding element and a sixth bonding element. The conduction element is connected to the driving element via the fifth bonding element. The amplification element is connected to the driving element via the sixth bonding element. The Young's modulus of the fifth bonding element is the same as that of the sixth bonding element. The Young's modulus of the fifth bonding element is different from that of the first bonding element. The Young's modulus of the fifth bonding element is greater than that of the first bonding element.

[0014] According to some embodiments of the present utility model, the optical element driving mechanism further includes a circuit assembly. The driving assembly is electrically connected to the circuit assembly and electrically connected to an external circuit via the circuit assembly. The circuit assembly includes a first electrical connection portion and a second electrical connection portion. The first electrical connection portion is configured to connect a first circuit portion of the driving assembly. The second electrical connection portion is configured to connect a second circuit portion of the driving assembly. A first section of the first circuit portion is located on a third surface. A second section of the first circuit portion is located on a fourth surface. The second section is located on a fifth surface. The third surface, the fourth surface, and the fifth surface are located on the fixing assembly. The third surface and the fourth surface are perpendicular to each other. When observed along the second axis, the third surface and the fifth surface do not overlap with each other. When observed along the second axis, the second surface and the fourth surface do not overlap with each other. The first electrical connection portion and the second electrical connection portion have a planar structure. When observed along a direction parallel to the first electrical connection portion, the first electrical connection portion is parallel to the second electrical connection portion. The first electrical connection portion is parallel to the second surface and the fourth surface. When observed along the second axis, the first electrical connection portion is located between the second surface and the fourth surface. The second surface, the third surface, and the fourth surface form a stepped structure.

[0015] According to some embodiments of the present utility model, the optical element driving mechanism further includes a protection element disposed on the fixing assembly. The protection element has a columnar structure and extends along the main axis. The protection element is configured to pass through the movable part. When observed along the main axis, a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant are defined with the main axis as the origin. When observed along the main axis, the protection element and the conduction element are located in the fourth quadrant. The optical element driving mechanism further includes a guiding element disposed on the fixing assembly. The guiding element has a columnar structure and extends along the main axis. The guiding element is configured to pass through the movable part. The optical element driving mechanism further includes a first stabilizing element disposed on the movable part. The first stabilizing element is made of a magnetic material. The first stabilizing element corresponds to the guiding element. When observed along the main axis, the guiding element and the first stabilizing element are located in the second quadrant. When observed along the main axis, the movable part has a rectangular structure. When observed along the main axis, the guiding element and the first stabilizing element are located at a corner of the rectangular structure. When observed along the main axis, the first stabilizing element, the guiding element, and the conduction element are arranged in sequence along a diagonal line of the rectangular structure.

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

[0017] In some embodiments, the receiving space has a setting part, a first guiding part, and a second guiding part. The setting part is connected between the first guiding part and the second guiding part, and the first guiding part and the second guiding part can be inclined surfaces, thereby guiding the driving component DA to be successfully positioned and fixed on the setting part.

[0018] In addition, the optical element driving mechanism may further include a first bonding element configured to connect the amplification element of the driving component to the setting part, and the optical element driving mechanism may further include a second bonding element disposed in the first opening of the base and configured to connect the conduction element of the driving component to the base. Based on the arrangement of these bonding elements, not only can the driving component be accurately positioned on the base, but also when the optical element driving mechanism is impacted, the impact force received by the driving component can be absorbed to avoid the problem of damage to the conduction element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model can be clearly understood through the following detailed description and 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. 16 is a perspective view of an optical element driving mechanism 100 according to an embodiment of the present utility model.

[0021] Figure 2 FIG. 20 is an exploded view of the optical element driving mechanism 100 according to an embodiment of the present utility model.

[0022] Figure 3 FIG. 24 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.

[0023] Figure 4 FIG. 30 is an enlarged perspective 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. 34 is a 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 Stereogram of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present utility model.

[0026] Figure 7 Is a sectional view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present utility model along Figure 1 the line segment B-B in

[0027] Figure 8 Front view of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present utility model.

[0028] Figure 9 Stereogram of a partial structure of an optical element driving mechanism 100 according to an embodiment of the present utility model from another perspective.

[0029] Explanation of 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 element

[0035] 107: Force applying element

[0036] 1071: First outer supporting portion

[0037] 1072: Second outer supporting portion

[0038] 1073: Retracted portion

[0039] 1074: Retracted portion

[0040] 108: Movable portion

[0041] 110: Protection element

[0042] 112: Base

[0043] 1121: Base opening

[0044] 112B: Setting portion

[0045] 112S: Accommodating space

[0046] 112W: Side wall

[0047] 114: Circuit component

[0048] 1141: First electrical connection portion

[0049] 1142: Second electrical connection part

[0050] 115: Photosensitive component

[0051] 120: Guide element

[0052] 130: First stabilizing element

[0053] AD1: First bonding element

[0054] AD2: Second bonding element

[0055] AD3: Third bonding element

[0056] AD4: Fourth bonding element

[0057] AD5: Fifth bonding element

[0058] AD6: Sixth bonding element

[0059] AP1: First bonding part

[0060] AP2: Second bonding part

[0061] AX1: First axis

[0062] AX2: Second axis

[0063] CR1: Corner

[0064] DA: Driving component

[0065] DL: Diagonal

[0066] FA: Fixing component

[0067] GDP1: First guiding part

[0068] GDP2: Second guiding part

[0069] MF1: Magnetic attraction

[0070] MG: Sensing magnet

[0071] MX: Main axis

[0072] NP1: First narrow part

[0073] NP2: Second narrow part

[0074] O: Optical axis

[0075] OP1: First opening

[0076] OP2: Second opening

[0077] PA1: Amplifying element

[0078] PA2: Driving element

[0079] PA21: First circuit section

[0080] PA22: Second circuit section

[0081] PA3: Conductive element

[0082] PH1: Perforation

[0083] Q1: First quadrant

[0084] Q2: Second quadrant

[0085] Q3: Third quadrant

[0086] Q4: Fourth quadrant

[0087] SA: Position sensing component

[0088] SC1: Gap

[0089] SC2: Gap

[0090] SE: Sensor

[0091] SG1: First section

[0092] SG2: Second section

[0093] SS1: First surface

[0094] SS2: Second surface

[0095] SS3: Third surface

[0096] SS4: Fourth surface

[0097] SS5: Fifth surface

[0098] TA: Intermediate component

[0099] X: X-axis

[0100] Y: Y-axis

[0101] Z: Z-axis Detailed implementation mode

[0102] 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 embodiments where the first feature component and the second feature component are in direct contact. Additionally, it may also include embodiments 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.

[0103] 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. Furthermore, forming, connecting to, and / or coupling to another feature component above another feature component in the present utility model may include embodiments where the feature components are formed in direct contact, and may also include embodiments where additional feature components may be formed to be inserted between the above-mentioned feature components, such that the above-mentioned feature components may not be in direct contact. Additionally, 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.

[0104] 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.

[0105] Furthermore, 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.

[0106] In addition, in some embodiments of the present utility model, terms related to joining and connecting, such as "connect" and "interconnect", unless 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 therebetween. And such terms related to joining and connecting may also include the cases where both structures are movable, or both structures are fixed.

[0107] 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. 9. 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 is installable in various electronic devices or portable electronic devices, such as being disposed in a smart phone for a user to perform an image capturing 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.

[0108] 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 is configured to 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.

[0109] In this embodiment, as Figure 2 shown in FIG. 10, 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.

[0110] Furthermore, the housing 102 and the base 112 are arranged along a main axis MX, and the housing 102 is disposed on the base 112, where the main axis MX can overlap or be parallel to the optical axis O. The housing 102 can have a receiving space 1023 for receiving components such as the movable part 108 and the driving assembly DA.

[0111] 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 can be a circuit board, but is not limited thereto. For example, the circuit assembly 114 can also be a flexible circuit board.

[0112] In this embodiment, as Figure 2 and Figure 3 shown, the driving assembly DA is electrically connected to the circuit assembly 114 and can be actuated according to the control signal of the circuit assembly 114 to drive the movable part 108 to move along the main axis MX or the optical axis O.

[0113] Specifically, as Figure 2 and Figure 3 shown, the driving assembly DA can include an amplifying element PA1, a driving element PA2, a conducting element PA3, and an intermediate assembly TA. Among them, the conducting element PA3 can have a long strip structure (columnar structure), and the conducting element PA3 can be made of carbon material, but is not limited thereto.

[0114] The amplifying element PA1 can be, for example, a counterweight, but is not limited thereto. In other embodiments, the amplifying element PA1 can also be a spring piece. The driving element PA2 is, for example, 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.

[0115] 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.

[0116] Furthermore, the intermediate assembly TA corresponds to the conducting element PA3, and the intermediate assembly TA is disposed between the conducting element PA3 and the movable part 108. As Figure 2 and Figure 3As shown, the conductive element PA3 passes through the intermediate assembly TA and the movable part 108, and the movable part 108 clamps the conductive element PA3 through the intermediate assembly TA. Thus, the driving force can be sequentially conducted to the movable part 108 via the conductive element PA3 and the intermediate assembly TA.

[0117] As Figure 2 shown, the intermediate assembly TA may include two contact elements 106 corresponding to and contacting the conductive element PA3 of the driving assembly DA. The intermediate assembly TA may further include a force - applying element 107 that applies a bearing force to the two contact elements 106. In this embodiment, the contact element 106 is, for example, a metal spring piece, and the force - applying element 107 is, for example, a rubber sleeve, but is not limited thereto.

[0118] Next, please continue to refer to Figures 2 to 4 . Figure 4 is a three - dimensional enlarged view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present invention. As Figure 3 and Figure 4 shown, the optical element driving mechanism 100 further includes an accommodation space 112S configured to accommodate at least a part of the driving assembly DA.

[0119] As Figure 4 shown, the accommodation space 112S may have a first opening OP1 formed on a first surface SS1. Specifically, the first opening OP1 is recessed from the first surface SS1 toward the - Z axis. On the other hand, the accommodation space 112S may further have a second opening OP2 formed on a second surface SS2. Specifically, the second opening OP2 is recessed from the second surface SS2 toward the + X axis.

[0120] In this embodiment, the first surface SS1 and the second surface SS2 are located on the base 112 of the fixed assembly FA, and the first surface SS1 and the second surface SS2 face different directions. For example, the first surface SS1 faces the + Z axis direction, and the second surface SS2 faces the + X axis direction, so the first surface SS1 and the second surface SS2 are not parallel to each other.

[0121] When observed along a first axial direction AX1, the first surface SS1 overlaps at least a part of the driving assembly DA. Specifically, when observed along the first axial direction AX1, the first surface SS1 overlaps at least a part of the conductive element PA3.

[0122] Furthermore, when observed along a second axial direction AX2, the second surface SS2 does not overlap the driving assembly DA. Specifically, when observed along the second axial direction AX2, the second surface SS2 does not overlap at least a part of the conductive element PA3.

[0123] Wherein, the first axial direction AX1 is parallel to the X-axis, for example, the second axial direction AX2 is parallel to the Y-axis, and the first axial direction AX1 is perpendicular to the second axial direction AX2.

[0124] In this embodiment, the first opening OP1 is connected to the second opening OP2, and the first opening OP1 may have a first narrow portion NP1, having a tapered structure that tapers along the -Z axis direction. Similarly, the second opening OP2 may also have a second narrow portion NP2, having a tapered structure that tapers along the +Z axis direction.

[0125] As Figure 4 shown, when viewed along the first axial direction AX1, the second narrow portion NP2 overlaps at least a part of the driving assembly DA, for example, overlaps the driving element PA2.

[0126] When viewed along the first axial direction AX1, the first narrow portion NP1 will overlap at least a part of the driving assembly DA, for example, overlaps the conducting element PA3. In addition, since the first opening OP1 is communicated with the second opening OP2, the first narrow portion NP1 is also connected to the second narrow portion NP2.

[0127] Furthermore, as Figure 3 and Figure 4 shown, the accommodating space 112S further has a setting portion 112B, and the driving assembly DA is configured to be set on the setting portion 112B and located at a preset position (or called a fixed position), as Figure 3 and Figure 4 the position in.

[0128] In this embodiment, the setting portion 112B may be a planar structure, and the setting portion 112B is a part of the base 112. Wherein, the setting portion 112B may be parallel to the first surface SS1.

[0129] Furthermore, the accommodating space 112S may further have a first guiding portion GDP1, configured to guide the driving assembly DA to be located at the preset position. The first guiding portion GDP1 is adjacent to the setting portion 112B, and the first guiding portion GDP1 may be a first planar structure. Wherein, the first planar structure is not parallel to the setting portion 112B, and the first guiding portion GDP1 is not perpendicular to the setting portion 112B.

[0130] Similarly, the accommodating space 112S further has a second guiding portion GDP2, configured to guide the driving assembly DA to be located at the preset position. The second guiding portion GDP2 is adjacent to the setting portion 112B, and the second guiding portion GDP2 may be a second planar structure. The second planar structure is not parallel to the setting portion 112B, and the second guiding portion GDP2 is not perpendicular to the setting portion 112B.

[0131] In addition, the first guiding part GDP1 and the second guiding part GDP2 are not parallel to each other and not perpendicular to each other. The first guiding part GDP1 and the second guiding part GDP2 can be inclined planes, for example. The minimum distance between the first guiding part GDP1 and the second guiding part GDP2 can be equal to or greater than the width of the driving component DA. Therefore, when the operator places the driving component DA into the second opening OP2, the amplification element PA1 can be guided to the setting part 112B by gravity and the first guiding part GDP1 and the second guiding part GDP2, so as to achieve the effects of quick installation and positioning.

[0132] In addition, it is worth noting that the aforementioned optical element is carried by the movable part 108 and the optical element is not located in the accommodation space 112S.

[0133] Please continue to refer to Figures 3 to 4 . In this embodiment, the optical element driving mechanism 100 may further include a first bonding element AD1, and the driving component DA is connected to the setting part 112B via the first bonding element AD1. Specifically, the driving component DA is fixed to the setting part 112B by the first bonding element AD1.

[0134] In this embodiment, the first bonding element AD1 directly contacts the first guiding part GDP1, the first bonding element AD1 directly contacts the second guiding part GDP2, and the first bonding element AD1 directly contacts the amplification element PA1.

[0135] Furthermore, as Figure 4 shown, the optical element driving mechanism 100 may further include a second bonding element AD2, and the driving component DA is connected to the first opening OP1 via the second bonding element AD2. Among them, the second bonding element AD2 directly contacts the first surface SS1, the second bonding element AD2 directly contacts the first narrow part NP1, and the second bonding element AD2 directly contacts the conduction element PA3.

[0136] In addition, it is worth explaining that due to assembly tolerances, when the driving component is installed in the accommodation space 112S through the first bonding element AD1 and the second bonding element AD2, the first surface SS1 may not be perpendicular to the extending direction of the conduction element PA3. For example, the angle formed between the first surface SS1 and the conduction element PA3 may be greater than 90 degrees and less than 95 degrees.

[0137] Based on such a configuration, a lateral thrust can be generated on the movable part 108 by the conduction element PA3, and such a thrust can improve the problem of tilting of the movable part 108 during movement, making its movement process more stable.

[0138] Next, asFigure 3 As shown, the optical element driving mechanism 100 further includes a third bonding element AD3, and the driving assembly DA is connected to and fixed to the housing 102 of the fixing assembly FA via the third bonding element AD3. Among them, the third bonding element AD3 directly contacts a first bonding portion AP1 of the fixing assembly FA.

[0139] The first bonding portion AP1 is, for example, the inner wall surface of the housing 102, has a planar structure, and faces the driving assembly DA. Correspondingly, the third bonding element AD3 directly contacts a second bonding portion AP2 of the driving assembly DA. The second bonding portion AP2 is, for example, the top surface of the conductive element PA3, has a planar structure, and faces the first bonding portion AP1.

[0140] As mentioned above, due to assembly tolerances, after the driving assembly DA is installed through the aforementioned plurality of bonding elements, the first bonding portion AP1 and the second bonding portion AP2 may not be parallel to each other. For example, the angle formed between the first bonding portion AP1 and the second bonding portion AP2 may be greater than 0 degrees and less than 5 degrees.

[0141] Next, please refer to Figures 2 to 5 . Figure 5 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 5 shown, the force applying element 107 has a first outwardly supporting portion 1071, which is disposed between the contact element 106 at the lower right corner and the movable portion 108. The force applying element 107 may further have a second outwardly supporting portion 1072, which is disposed between the contact element 106 at the upper left corner and the movable portion 108.

[0142] Furthermore, the force applying element 107 further has a retracted portion 1073, and the first outwardly supporting portion 1071 is connected to the second outwardly supporting portion 1072 via the retracted portion 1073. As Figure 5 shown, the maximum distance between the first outwardly supporting portion 1071 and the movable portion 108 is different from the minimum distance between the retracted portion 1073 and the movable portion 108.

[0143] For example, the maximum distance between the first outwardly supporting portion 1071 and the movable portion 108 is about 0 to 0.1 mm, that is, the first outwardly supporting portion 1071 directly contacts the movable portion 108 and there may be no gap between them.

[0144] The minimum distance between the retracted portion 1073 and the movable portion 108 is greater than 0.1 mm, for example, 0.5 mm. Therefore, the maximum distance between the first outwardly supporting portion 1071 and the movable portion 108 is less than the maximum distance between the retracted portion 1073 and the movable portion 108. Similarly, the first outwardly supporting portion 1071 may be connected to the second outwardly supporting portion 1072 via another retracted portion 1074, and the minimum distance between the retracted portion 1074 and the movable portion 108 is also greater than 0.1 mm.

[0145] In this embodiment, the optical element driving mechanism 100 may further include a fourth bonding element AD4, and the intermediate assembly TA is connected to the movable portion 108 via the fourth bonding element AD4.

[0146] The fourth bonding element AD4 is in direct contact with the force applying element 107, and a part of the fourth bonding element AD4 is in direct contact with the retracted portion 1073. Similarly, another part of the fourth bonding element AD4 may be in direct contact with the retracted portion 1074.

[0147] Specifically, as Figure 5 shown, at least a part of the fourth bonding element AD4 is located in a gap SC1 formed between the retracted portion 1073 and the movable portion 108, and another part of the fourth bonding element AD4 is located in a gap SC2 formed between the retracted portion 1074 and the movable portion 108, so that the force applying element 107 can be connected to the movable portion through the fourth bonding element AD4.

[0148] In this embodiment, the first bonding element AD1 may have the same material as the second bonding element AD2, the second bonding element AD2 may have the same material as the third bonding element AD3, the third bonding element AD3 may have the same material as the fourth bonding element AD4, and the first bonding element AD1 may have the same material as the fourth bonding element AD4.

[0149] For example, these bonding elements may be elastic glues, such as gels, but are not limited thereto. These bonding elements may have the same physical properties, such as the same Young's modulus and other properties.

[0150] In addition, as Figure 3 shown in Figure 4 connection with, the driving assembly DA may further include a fifth bonding element AD5 and a sixth bonding element AD6. The conduction element PA3 is connected to the driving element PA2 via the fifth bonding element AD5, and the amplification element PA1 is connected to the driving element PA2 via the sixth bonding element AD6.

[0151] In this embodiment, the fifth bonding element AD5 and the sixth bonding element AD6 may also be glue. The Young's modulus of the fifth bonding element AD5 is the same as that of the sixth bonding element AD6, but the Young's modulus of the fifth bonding element AD5 is different from that of the first bonding element AD1. For example, the Young's modulus of the fifth bonding element AD5 is greater than that of the first bonding element AD1.

[0152] That is, the fifth bonding element AD5 and the sixth bonding element AD6 are harder than the first bonding element AD1, so that the driving element PA2 can be fixedly connected to the amplification element PA1 and the conduction element PA3.

[0153] In addition, it should be noted that, in order to clearly show the positions of the fifth bonding element AD5 and the sixth bonding element AD6, these two elements are shown as overflowing on the surface of the driving assembly DA in the figure, but actually they may not protrude outside the driving assembly DA. For example, they may only be in the gaps between the conductive element PA3 and the driving element PA2 and between the driving element PA2 and the amplifying element PA1 without overflowing.

[0154] Furthermore, as Figure 2 shown in Figure 5 , the optical element driving mechanism 100 may further include a position sensing assembly SA configured to sense the movement of the movable part 108. The position sensing assembly SA may include a sensing magnet MG and a sensor SE. The sensing magnet MG is fixedly disposed on the movable part 108, and the sensor SE is disposed on the circuit assembly 114. Among them, the sensor SE may be, for example, a Hall sensor or a tunneling magnetoresistance sensor (TMR sensor), and the sensing magnet MG may be, for example, a multi-pole magnet, but is not limited thereto.

[0155] Next, please refer to Figure 3 , Figure 4 , Figures 6 to 7 . Figure 6 FIG. is a perspective view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present invention, and Figure 7 FIG. is a cross-sectional view of a partial structure of the optical element driving mechanism 100 along the line B-B in Figure 1 . In this embodiment, 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 act according to the control signal of the external circuit.

[0156] The circuit assembly 114 includes a first electrical connection portion 1141 and a second electrical connection portion 1142. The first electrical connection portion 1141 is configured to be connected to a first circuit portion PA21 of the driving assembly DA by welding, and the second electrical connection portion 1142 is configured to be connected to a second circuit portion PA22 of the driving assembly DA by welding.

[0157] Among them, the first circuit portion PA21 and the second circuit portion PA22 may be lead wires, and the first electrical connection portion 1141 and the second electrical connection portion 1142 are, for example, soldering pads, but are not limited thereto.

[0158] As Figure 4 shown in Figure 6As shown, a first section SG1 of the first circuit portion PA21 is located on a third surface SS3, a second section SG2 of the first circuit portion PA21 is located on a fourth surface SS4, and the second section SG2 is also located on a fifth surface SS5. Among them, the third surface SS3, the fourth surface SS4, and the fifth surface SS5 are located on the base 112, and the third surface SS3 and the fourth surface SS4 are perpendicular to each other.

[0159] When viewed along the second axis AX2, the third surface SS3 and the fifth surface SS5 do not overlap each other. When viewed along the second axis AX2, the second surface SS2 and the fourth surface SS4 also do not overlap each other.

[0160] Furthermore, as Figure 4 shown, the first electrical connection portion 1141 and the second electrical connection portion 1142 have a planar structure. When viewed along a direction parallel to the first electrical connection portion 1141 (such as the second axis AX2), the first electrical connection portion 1141 is parallel to the second electrical connection portion 1142, and the first electrical connection portion 1141 is parallel to the second surface SS2 and the fourth surface SS4.

[0161] Furthermore, as Figure 6 and Figure 7 shown, when viewed along a direction parallel to the Y axis (such as along the second axis AX2), the first electrical connection portion 1141 is located between the second surface SS2 and the fourth surface SS4, and a stepped structure may be formed on the second surface SS2, the third surface SS3, the fourth surface SS4, and the fifth surface.

[0162] Based on the configuration of the above stepped structure, the first section SG1 and the second section SG2 can be separated by the stepped structure, so that the operator can quickly pull out the first circuit portion PA21 and the second circuit portion PA22 from the amplification element PA1 and respectively rest them on the third surface SS3 and the fifth surface SS5 and then weld them to the circuit assembly 114. That is, such a design can not only avoid the problem of the first circuit portion PA21 and the second circuit portion PA22 being entangled with each other, but also achieve the effect of quick positioning.

[0163] Next, please refer to Figure 2 、 Figure 5 and Figure 8 . Figure 8 It is a front view of a partial structure of the 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 protection element 110 disposed on the base 112 of the fixed assembly FA. The protection element 110 can be made of a metal material and has a columnar structure, such as a cylindrical structure. The protection element 110 extends along the main axis MX and passes through the movable portion 108.

[0164] As shown Figure 2 in Figure 5 Figure [not provided], the protection element 110 is disposed adjacent to the conduction element PA3. Specifically, as Figure 5 shown, when viewed along the main axis MX, with the main axis MX as the origin, a first quadrant Q1, a second quadrant Q2, a third quadrant Q3, and a fourth quadrant Q4 can be defined, and when viewed along the main axis MX, the protection element 110 and the conduction element PA3 are located in the fourth quadrant Q4.

[0165] Based on the structural design and position configuration of the protection element 110, 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 protection element 110 can absorb the impact force received by the movable part 108 to protect the conduction element PA3.

[0166] Next, please refer to Figure 2 , Figure 5 , Figure 8 and Figure 9 . Figure 9 Figure [not provided] is a perspective view of a partial structure of the optical element driving mechanism 100 according to an embodiment of the present invention from another perspective. As Figure 5 and Figure 8 shown, since the driving assembly DA is disposed on the right side of the movable part, when the driving assembly DA drives the movable part 108 to move along the main axis MX, the left part of the movable part 108 may tilt towards the base 112, thereby causing the problem of unclear image.

[0167] To avoid the above situation, the optical element driving mechanism 100 further includes a guiding element 120 and a first stabilizing element 130 to avoid the problem of tilting of the movable part 108 during movement. As Figure 2 shown Figure 9 in Figure [not provided], the guiding element 120 is disposed on the base 112 of the fixed assembly FA.

[0168] Similarly, the guiding element 120 has a columnar structure, such as a cylindrical structure, extending along the main axis MX, and the guiding element 120 is configured to pass through the movable part 108. Furthermore, the first stabilizing element 130 is fixedly disposed on the movable part 108 corresponding to the guiding element 120.

[0169] As Figure 5 shown, when viewed along the main axis MX, the movable part 108 may have a rectangular structure. When viewed along the main axis MX, the guiding element 120 and the first stabilizing element 130 are located at a corner CR1 of the rectangular structure. Specifically, when viewed along the main axis MX, the guiding element 120 and the first stabilizing element 130 are located in the second quadrant Q2.

[0170] Furthermore, as Figure 5 shown, when viewed along the main axis MX, the first stabilizing element 130, the guiding element 120, and the conducting element PA3 are sequentially arranged along a diagonal line DL of the rectangular structure.

[0171] In this embodiment, the first stabilizing element 130 is made of a magnetic material. For example, the first stabilizing element 130 is a magnet, and the first stabilizing element 130 corresponds to the guiding element 120. For example, the guiding element 120 can be made of a magnetically permeable material, such as a metal material.

[0172] A magnetic attraction force MF1 can be generated between the guiding element 120 and the first stabilizing element 130, so that the first stabilizing element 130 pushes the movable part 108 along the diagonal line DL (as shown by the arrow in Figure 5 ), and the inner wall surface of a through hole PH1 of the movable part 108 can abut against the guiding element 120 to increase the frictional force between the movable part 108 and the guiding element 120.

[0173] Based on such a design, the 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 axis MX.

[0174] 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 can move 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, which is configured to accommodate at least a part of the driving assembly DA.

[0175] In some embodiments, the accommodation space 112S has a setting part 112B, a first guiding part GDP1, and a second guiding part GDP2. The setting part 112B is connected between the first guiding part GDP1 and the second guiding part GDP2, and the first guiding part GDP1 and the second guiding part GDP2 can be inclined surfaces, so as to guide the driving assembly DA to be successfully positioned and fixed on the setting part 112B.

[0176] In addition, the optical element driving mechanism 100 may further include a first bonding element AD1 configured to connect the amplification element PA1 of the driving assembly DA to the setting portion 112B, and the optical element driving mechanism 100 may further include a second bonding element AD2 disposed in the first opening OP1 of the base 112 and configured to connect the conduction element PA3 of the driving assembly DA to the base 112. Based on the arrangement of these bonding elements, not only can the driving assembly DA be accurately positioned on the base 112, but also when the optical element driving mechanism 100 is impacted, the impact force received by the driving assembly DA can be absorbed to avoid the problem of damage to the conduction element PA3.

[0177] Although the embodiments of the present invention and their advantages have been disclosed above, it should be understood that any person of ordinary skill 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 disclosure, machines, manufactures, compositions of matter, devices, methods, and steps described in the specific embodiments in the specification. Any person of ordinary skill in the art can understand the disclosure, machines, manufactures, compositions of matter, devices, methods, and steps developed currently or in the future from the disclosure of the present invention. 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 invention. Therefore, the scope of protection of the present invention includes the above-mentioned disclosure, machines, manufactures, compositions of matter, devices, methods, and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present invention 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 guiding element disposed on the fixed component; The guiding element has a columnar structure and extends along the main shaft; The guiding element is configured to pass through the movable part; The optical element driving mechanism further includes a first stabilizing element disposed on the movable part; The first stabilizing element is made of magnetic material; The first stabilizing element corresponds to the guiding element.

2. The optical element driving mechanism according to claim 1, wherein The optical element driving mechanism further includes an accommodating space configured to accommodate at least a part of the driving component; The accommodating space has a first opening formed on a first surface; The accommodating space has a second opening formed on a second surface; The first surface and the second surface are located on the fixed component; The first surface and the second surface face different directions; The first surface and the second surface are not parallel to each other; When viewed along a first axial direction, the first surface overlaps at least a part of the driving component; When viewed along a second axial direction, the second surface does not overlap the driving component; The first axial direction is perpendicular to the second axial direction; The first opening is connected to the second opening; The first opening has a first narrow part with a tapered structure; The second opening has a second narrow part with a tapered structure; When viewed along the first axial direction, the second narrow part overlaps at least a part of the driving component; When viewed along the first axial direction, the first narrow part overlaps at least a part of the driving component; The first narrow part is connected to the second narrow part.

3. The optical element driving mechanism according to claim 2, wherein The accommodating space further has a setting part; The driving component is disposed on the setting part and located at a preset position; The setting part has a planar structure; The setting part is parallel to the first surface; The accommodating space further has a first guiding part configured to guide the driving component to be located at the preset position; The first guiding part is adjacent to the setting part; The first guiding part has a first planar structure and the first planar structure is not parallel to the setting part; The first guiding part is not perpendicular to the setting part; The accommodating space further has a second guiding part configured to guide the driving component to be located at the preset position; The second guiding part is adjacent to the setting part; The second guiding part has a second planar structure and the second planar structure is not parallel to the setting part; The second guiding part is not perpendicular to the setting part; The first guiding part and the second guiding part are not parallel to each other; The first guiding part and the second guiding part are not perpendicular to each other; The optical element is not located in the accommodating space.

4. The optical element driving mechanism according to claim 3, wherein The driving component includes a driving element, a conducting element, and an amplifying element; The driving element is configured to generate a driving force; The conducting element is configured to conduct the driving force; The driving force is transmitted to the movable part via the transmission element; The transmission element has an elongated structure and extends along the main axis; The amplification element corresponds to the driving element to enhance the intensity of the driving force; When viewed along the first axial direction, the first surface overlaps at least a part of the transmission element; When viewed along the second axial direction, the second surface does not overlap at least a part of the transmission element.

5. The optical element driving mechanism according to claim 4, wherein The optical element driving mechanism further includes a first bonding element, and the driving assembly is connected to the setting part via the first bonding element; The first bonding element directly contacts the first guiding part; The first bonding element directly contacts the second guiding part; The first bonding element directly contacts the amplification element; The optical element driving mechanism further includes a second bonding element, and the driving assembly is connected to the first opening via the second bonding element; The second bonding element directly contacts the first surface; The second bonding element directly contacts the first narrow part; The second bonding element directly contacts the transmission element; The first surface is not perpendicular to the extending direction of the transmission element.

6. The optical element driving mechanism according to claim 5, wherein The optical element driving mechanism further includes a third bonding element, and the driving assembly is connected to the fixing assembly via the third bonding element; The third bonding element directly contacts a first bonding part of the fixing assembly; The first bonding part has a planar structure facing the driving assembly; The third bonding element directly contacts a second bonding part of the driving assembly; The second bonding part has a planar structure facing the first bonding part; The first bonding part and the second bonding part are not parallel to each other; Wherein, the optical element driving mechanism further includes an intermediate assembly disposed between the transmission element and the movable part; The driving force is sequentially transmitted to the movable part via the transmission element and the intermediate assembly; The intermediate assembly includes a contact element corresponding to the driving assembly; The intermediate assembly further includes a force applying element that applies a supporting force to the contact element; The force applying element has a first outwardly supporting part disposed between the contact element and the movable part; The force applying element further has a second outwardly supporting part disposed between the contact element and the movable part; The force applying element further has a retracted part, and the first outwardly supporting part is connected to the second outwardly supporting part via the retracted part; The maximum distance between the first outwardly supporting part and the movable part is different from the minimum distance between the retracted part and the movable part; The maximum distance between the first outwardly supporting part and the movable part is less than the minimum distance between the retracted part and the movable part.

7. The optical element driving mechanism according to claim 6, wherein The optical element driving mechanism further includes a fourth bonding element; The intermediate assembly is connected to the movable part via the fourth bonding element; The fourth bonding element directly contacts the force applying element; The fourth bonding element directly contacts the retracted part; At least a part of the fourth bonding element is located in a gap formed between the retracted part and the movable part; The first bonding element and the second bonding element are made of the same material; The second bonding element and the third bonding element are made of the same material; The third bonding element and the fourth bonding element are made of the same material; The first bonding element and the fourth bonding element are made of the same material.

8. The optical element driving mechanism according to claim 7, wherein, The driving assembly further includes a fifth bonding element and a sixth bonding element; The conduction element is connected to the driving element via the fifth bonding element; The amplification element is connected to the driving element via the sixth bonding element; The Young's modulus of the fifth bonding element is the same as that of the sixth bonding element; The Young's modulus of the fifth bonding element is different from that of the first bonding element; The Young's modulus of the fifth bonding element is greater than that of the first bonding element.

9. The optical element driving mechanism according to claim 8, wherein, The optical element driving mechanism further includes a circuit assembly; The driving assembly is electrically connected to the circuit assembly and is electrically connected to an external circuit via the circuit assembly; The circuit assembly includes a first electrical connection portion and a second electrical connection portion; The first electrical connection portion is configured to connect to a first circuit portion of the driving assembly; The second electrical connection portion is configured to connect to a second circuit portion of the driving assembly; A first section of the first circuit portion is located on a third surface; A second section of the first circuit portion is located on a fourth surface; The second section is located on a fifth surface; The third surface, the fourth surface and the fifth surface are located on the fixing assembly; The third surface and the fourth surface are perpendicular to each other; When viewed along the second axis, the third surface and the fifth surface do not overlap with each other; When viewed along the second axis, the second surface and the fourth surface do not overlap with each other; The first electrical connection portion and the second electrical connection portion have a planar structure; When viewed along a direction parallel to the first electrical connection portion, the first electrical connection portion is parallel to the second electrical connection portion; The first electrical connection portion is parallel to the second surface and the fourth surface; When viewed along the second axis, the first electrical connection portion is located between the second surface and the fourth surface; The second surface, the third surface and the fourth surface form a stepped structure.

10. The optical element driving mechanism according to claim 4, wherein, The optical element driving mechanism further includes a protection element disposed on the fixing assembly; The protection element has a columnar structure and extends along the main axis; The protection element is configured to pass through the movable portion; When viewed along the main axis, a first quadrant, a second quadrant, a third quadrant and a fourth quadrant are defined with the main axis as the origin; When viewed along the main axis, the protection element and the conduction element are located in the fourth quadrant; When viewed along the main axis, the guiding element and the first stabilizing element are located in the second quadrant; When viewed along the main axis, the movable portion has a rectangular structure; When viewed along the main axis, the guiding element and the first stabilizing element are located at a corner of the rectangular structure; When viewed along the main axis, the first stabilizing element, the guiding element, and the conducting element are arranged in sequence along a diagonal of the rectangular structure.

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