TWI410024B - Voice coil motor - Google Patents
Voice coil motor Download PDFInfo
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- TWI410024B TWI410024B TW97116315A TW97116315A TWI410024B TW I410024 B TWI410024 B TW I410024B TW 97116315 A TW97116315 A TW 97116315A TW 97116315 A TW97116315 A TW 97116315A TW I410024 B TWI410024 B TW I410024B
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- circular frame
- voice coil
- coil motor
- fixing
- magnetic
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 32
- 239000000696 magnetic material Substances 0.000 claims abstract description 8
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
本發明涉及一種驅動裝置，尤其涉及一種能提高磁場利用效率的音圈馬達。 The present invention relates to a driving device, and more particularly to a voice coil motor capable of improving magnetic field utilization efficiency.
音圈馬達(Voice Coil Motor,VCM)適合作為電子產品(如數碼相機、手機、數碼攝像機等)中的短距驅動裝置。(請參見Design of a voice coil motor used in the focusing system of a digital video camera，Magnetics,IEEE Transactions on Volume 41,Issue 10,Oct.2005 Page(s)：3979-3981)。 Voice Coil Motor (VCM) is suitable as a short-distance drive in electronic products (such as digital cameras, mobile phones, digital video cameras, etc.). (See Design of a voice coil motor used in the focusing system of a digital video camera, Magnetics, IEEE Transactions on Volume 41, Issue 10, Oct. 2005 Page (s): 3979-3981).
一般地，音圈馬達包括一個四個側壁為磁性件的方形固定組件，一個設有線圈組且收容於該方形固定組件內的活動件。該線圈組通上電流後，該線圈組與該磁性件共同作用產生的勞倫磁力使該活動件沿該方形固定組件的中心軸方向移動，從而實現短距移動。 Generally, the voice coil motor includes a square fixing assembly in which four side walls are magnetic members, and a movable member provided with a coil group and housed in the square fixing assembly. After the current is applied to the coil assembly, the Laurent magnetic force generated by the coil assembly and the magnetic member moves the movable member along the central axis direction of the square fixing assembly, thereby achieving short-distance movement.
然而，由於該方形固定組件四個角落為絕緣的架體設計，四個側壁的磁性件無法相互接觸，因此方形固定組件四個角落處線圈組無法完全與磁性件相對應而造成磁力線較稀疏，導致磁場利用效率較低。 However, since the four corners of the square fixing component are designed as an insulating frame, the magnetic members of the four side walls cannot be in contact with each other, and therefore the coil group at the four corners of the square fixing component cannot completely correspond to the magnetic component, and the magnetic lines of force are sparse. Lead to low efficiency of magnetic field utilization.
有鑒於此，本發明提供一種能提高磁場利用效率的音圈馬達。 In view of the above, the present invention provides a voice coil motor capable of improving the efficiency of magnetic field utilization.
一種音圈馬達，其包括一個設有線圈組的活動件及一個收容該活動件的固定組件。該固定組件為圓筒狀，該固定組件的筒壁由磁性材料製成。該固定組件包括一對設置於兩端的第一圓形框與第二圓形框，該固定組件的筒壁包括至少一個由磁性材料製成的固定柱及至少一個磁性件，該固定柱與該第一圓形框及該第二圓形框分別連接，該磁性件安裝於該固定柱之間。 A voice coil motor includes a movable member provided with a coil assembly and a fixing assembly for housing the movable member. The fixing assembly is cylindrical, and the wall of the fixing assembly is made of a magnetic material. The fixing assembly comprises a pair of first circular frame and second circular frame disposed at two ends, the wall of the fixing assembly comprises at least one fixing column made of a magnetic material and at least one magnetic piece, the fixing column and the fixing column The first circular frame and the second circular frame are respectively connected, and the magnetic member is mounted between the fixing posts.
與先前技術相比，該音圈馬達利用圓筒狀固定組件將由磁性材料製成的筒壁與該線圈組完全相對以提高磁場利用效率。 Compared with the prior art, the voice coil motor utilizes a cylindrical fixing assembly to completely face the wall of the cylinder made of a magnetic material to improve the magnetic field utilization efficiency.
10‧‧‧音圈馬達 10‧‧‧ voice coil motor
110‧‧‧外殼 110‧‧‧Shell
112‧‧‧底板 112‧‧‧floor
114‧‧‧第一側板 114‧‧‧First side panel
116‧‧‧第二側板 116‧‧‧Second side panel
118‧‧‧開口 118‧‧‧ openings
114a、114b‧‧‧端子接槽 114a, 114b‧‧‧ terminal slot
120a‧‧‧第一彈片 120a‧‧‧First shrapnel
120b‧‧‧第二彈片 120b‧‧‧second shrapnel
122‧‧‧第一通孔 122‧‧‧First through hole
124‧‧‧第二通孔 124‧‧‧Second through hole
126‧‧‧第一導接端子 126‧‧‧First lead terminal
128‧‧‧第二導接端子 128‧‧‧Second conductive terminal
130‧‧‧固定組件 130‧‧‧Fixed components
132‧‧‧磁性件 132‧‧‧Magnetic parts
134‧‧‧筒壁 134‧‧‧
135‧‧‧第一圓形框 135‧‧‧ first round frame
136‧‧‧第二圓形框 136‧‧‧second round frame
137‧‧‧固定柱 137‧‧‧ fixed column
138‧‧‧第一突柱 138‧‧‧First pillar
139‧‧‧第二突柱 139‧‧‧second stud
140‧‧‧活動件 140‧‧‧Activities
146‧‧‧線圈組 146‧‧‧ coil set
150‧‧‧承載座 150‧‧‧Hosting
160‧‧‧屏蔽體 160‧‧‧Shield
137a‧‧‧第一凹槽 137a‧‧‧first groove
137b‧‧‧第二凹槽 137b‧‧‧second groove
圖1為本發明音圈馬達的立體分解圖。 1 is an exploded perspective view of a voice coil motor of the present invention.
圖2為圖1中音圈馬達的固定組件的部分立體示意圖。 2 is a partial perspective view of the fixing assembly of the voice coil motor of FIG. 1.
圖3為圖2中音圈馬達的固定柱的立體示意圖。 3 is a perspective view of the fixing post of the voice coil motor of FIG. 2.
圖4為圖1中音圈馬達的立體組裝圖。 4 is an assembled, isometric view of the voice coil motor of FIG. 1.
下面將結合附圖，對本發明作進一步的詳細說明。 The invention will be further described in detail below with reference to the accompanying drawings.
請參閱圖1，為本發明提供的一種音圈馬達10，其可以用於數位相機(圖未示)中。該音圈馬達10包括一個外殼110，一個第一彈片120a，一個第二彈片120b，一個圓筒狀固定組件130，一個收容於該固定組件130且設有線圈組146的活動件140以及一個承載座150。 Referring to FIG. 1, a voice coil motor 10 according to the present invention can be used in a digital camera (not shown). The voice coil motor 10 includes a housing 110, a first elastic piece 120a, a second elastic piece 120b, a cylindrical fixing assembly 130, a movable member 140 received in the fixing assembly 130 and provided with the coil assembly 146, and a bearing. Block 150.
該外殼110用於消除外部電磁對該音圈馬達10的干擾及防止該音圈馬達10的電磁影響其外部電子元件的工作。該外殼110可由鎳鐵合金、導電塑膠、表面導電材料、導電玻璃等磁屏蔽材料製成。該外殼110具有一個底板112、兩個設置於底板112相對兩側的第一側板114及兩個設置於底板112的另外相對兩側的第二側板116。該底板112、兩個第一側板114及兩個第二側板116形成一個收容該固定組件130的收容空間。該底板112的幾何中心開設一開口118，用於光線射入鏡頭模組(圖未示)中。其中一個第一側板114上開設有兩個端子接槽114a、114b。 The housing 110 serves to eliminate external electromagnetic interference with the voice coil motor 10 and to prevent the electromagnetic of the voice coil motor 10 from affecting the operation of its external electronic components. The outer casing 110 may be made of a magnetic shielding material such as a nickel-iron alloy, a conductive plastic, a surface conductive material, or a conductive glass. The housing 110 has a bottom plate 112, two first side plates 114 disposed on opposite sides of the bottom plate 112, and two second side plates 116 disposed on opposite sides of the bottom plate 112. The bottom plate 112 , the two first side plates 114 , and the two second side plates 116 form a receiving space for receiving the fixing component 130 . The geometric center of the bottom plate 112 defines an opening 118 for light to enter the lens module (not shown). One of the first side plates 114 is provided with two terminal slots 114a, 114b.
該第一彈片120a具有四個均勻分佈的第一通孔122及一個第一導接端子126。該第二彈片120b具有四個均勻分佈的第二通孔124及一個第二導接端子128。該第一導接端子126與該第二導接端子128的結構相似，均呈L形，該第一導接端子126與該第二導接端子128穿過該承載座150並分別藉由兩個端子接槽114a及114b與外部電路連接。 The first elastic piece 120a has four evenly distributed first through holes 122 and one first conductive terminal 126. The second elastic piece 120b has four evenly distributed second through holes 124 and one second conductive terminal 128. The first conductive terminal 126 is similar in structure to the second conductive terminal 128. The first conductive terminal 126 and the second conductive terminal 128 pass through the carrier 150 and are respectively The terminal slots 114a and 114b are connected to an external circuit.
請結合圖2，該圓筒狀的固定組件130包括一對設置於兩端的第一圓形框135與第二圓形框136。該固定組件130的筒壁134包括四個由磁性材料製成的固定柱137及四個圓弧形磁性件132。該固定柱137與該第一圓形框135及該第二圓形框136分別連接，每個磁性件132安裝於相鄰兩個固定柱137之間。該第一圓形框135上具有四個與該第一通孔122對應的第一突柱138，該第一彈片120a藉由該第一突柱138穿過該第一通孔122固定於該第一圓形框135上。該第二圓形框136上具有四個與該第二通孔124對應的第二突柱 139，該第二彈片120b藉由該第二突柱139穿過該第二通孔124固定於該第二圓形框136上。請結合圖3，每個固定柱137包括一個第一凹槽137a及一個第二凹槽137b，每個固定柱137藉由膠合方式與該第一圓形框135及該第二圓形框136相連。該圓弧形磁性件132卡合於該第一凹槽137a及該第二凹槽137b中並與該線圈組146相對應。較佳地，每個磁性件132的弧度與線圈組146的弧度相同。 Referring to FIG. 2, the cylindrical fixing assembly 130 includes a pair of first circular frame 135 and second circular frame 136 disposed at both ends. The barrel wall 134 of the fixing assembly 130 includes four fixing posts 137 made of a magnetic material and four arc-shaped magnetic members 132. The fixing post 137 is connected to the first circular frame 135 and the second circular frame 136 respectively, and each magnetic member 132 is mounted between two adjacent fixing posts 137. The first circular frame 135 has four first protrusions 138 corresponding to the first through holes 122. The first elastic piece 120a is fixed to the first protruding piece 138 through the first through hole 122. On the first circular frame 135. The second circular frame 136 has four second protrusions corresponding to the second through holes 124 139. The second elastic piece 120b is fixed to the second circular frame 136 by the second protrusion 139 passing through the second through hole 124. Referring to FIG. 3 , each of the fixing posts 137 includes a first groove 137 a and a second groove 137 b . Each of the fixing posts 137 is glued to the first circular frame 135 and the second circular frame 136 . Connected. The circular arc-shaped magnetic member 132 is engaged in the first recess 137a and the second recess 137b and corresponds to the coil assembly 146. Preferably, the curvature of each of the magnetic members 132 is the same as the arc of the coil assembly 146.
可以理解，該第一圓形框135及該第二圓形框136可由導磁性彈性材料製成，該磁性件132藉由緊配合方式分別與該第一圓形框135及該第二圓形框136相接。該第一圓形框135及該第二圓形框136還可由導磁性金屬材料製成，該磁性件132藉由膠合方式分別與該第一圓形框135及該第二圓形框136相接。 It can be understood that the first circular frame 135 and the second circular frame 136 can be made of a magnetically conductive elastic material, and the magnetic member 132 is respectively tightly matched with the first circular frame 135 and the second circular shape. Block 136 is connected. The first circular frame 135 and the second circular frame 136 can also be made of a magnetic conductive metal material, and the magnetic member 132 is respectively glued to the first circular frame 135 and the second circular frame 136. Pick up.
另，該第一通孔122並不局限於本實施方式中四個，該第一突柱138也不局限於本實施方式中四個，可以為至少兩個中任意個數，只需滿足該第一彈片120a能藉由該第一突柱138穿過該第一通孔122而固定於該第一圓形框135上即可。該第二通孔124不局限於本實施方式中四個，該第二突柱139也不局限於本實施方式中四個，可以為至少兩個中任意個數，只需滿足該第二彈片120b能藉由該第二突柱139穿過該第二通孔124而固定於該第二圓形框136上即可。 In addition, the first through hole 122 is not limited to four in the embodiment, and the first protruding column 138 is not limited to four in the embodiment, and may be any number of at least two, and only needs to satisfy the The first elastic piece 120a can be fixed to the first circular frame 135 by the first protruding post 138 passing through the first through hole 122. The second through hole 124 is not limited to four in the embodiment, and the second protruding column 139 is not limited to four in the embodiment, and may be any number of at least two, and only needs to satisfy the second elastic piece. 120b can be fixed to the second circular frame 136 by the second protrusion 139 passing through the second through hole 124.
該承載座150呈方形，其用以承載影響感測器(圖未示)，使光線經過鏡頭模組(圖未示)成像於影響感測器(圖未示)上。請結合圖4，該承載座150與該外殼110構成一個屏蔽體160。該屏蔽體160 可用於消除外部電磁對該音圈馬達10的干擾並防止該音圈馬達10的電磁影響其外部電子元件的工作。 The carrier 150 has a square shape for carrying an influence sensor (not shown), and the light is imaged through a lens module (not shown) on an influence sensor (not shown). Referring to FIG. 4, the carrier 150 and the housing 110 form a shield 160. The shield 160 It can be used to eliminate external electromagnetic interference with the voice coil motor 10 and prevent the electromagnetic of the voice coil motor 10 from affecting the operation of its external electronic components.
組裝時，該活動件140收容於該固定組件130內，該第一彈片120a及該第二彈片120b分別固定於該固定組件130的第一圓形框135及該第二圓形框136上，該固定組件130被收容於該外殼110內並固定於該承載座150，其中，該第一導接端子126與該第二導接端子128穿過該承載座150並分別藉由兩個端子接槽114a及114b與外部電路連接。 The first elastic piece 120a and the second elastic piece 120b are respectively fixed to the first circular frame 135 and the second circular frame 136 of the fixing component 130, respectively. The fixing component 130 is received in the housing 110 and fixed to the carrier 150. The first guiding terminal 126 and the second guiding terminal 128 pass through the carrier 150 and are respectively connected by two terminals. The slots 114a and 114b are connected to an external circuit.
當通上電流時，電流依次流經該第一導接端子126、該第一彈片120a、該線圈組146的一端頭、該線圈組146的另一端頭、該第二彈片120b以及該第二導接端子128，從而形成閉合回路。本發明提供的音圈馬達10在動作時，外部電路的電流由該第一導接端子126傳導至該線圈組146，根據弗萊明左手定則與安培右手定則，控制該線圈組146的電流大小及方向可驅使該活動件140沿鏡頭模組(圖未示)中心軸方向移動，實現調焦或者自動對焦的功能。該活動件140在移動時與該第一彈片120a、該第二彈片120b產生連動，因此當外部電路不提供電流時，該線圈組146也沒有電流經過，該活動件140就會受到該第一彈片120a或該第二彈片120b的彈性拉伸回復力而重定。 When the current is applied, the current flows through the first conductive terminal 126, the first elastic piece 120a, the end of the coil set 146, the other end of the coil set 146, the second elastic piece 120b, and the second. The terminal 128 is connected to form a closed loop. When the voice coil motor 10 provided by the present invention is in operation, the current of the external circuit is conducted from the first conductive terminal 126 to the coil assembly 146, and the current of the coil assembly 146 is controlled according to Fleming's left-hand rule and Ampere right-hand rule. And the direction can drive the movable member 140 to move along the central axis direction of the lens module (not shown) to realize the function of focusing or autofocusing. The movable member 140 is interlocked with the first elastic piece 120a and the second elastic piece 120b when moving, so when the external circuit does not supply current, the coil set 146 also has no current passing, and the movable member 140 receives the first The elastic stretch recovery force of the elastic piece 120a or the second elastic piece 120b is reset.
本發明提供的音圈馬達利用圓筒狀固定組件將由磁性材料製成的筒壁與該線圈組完全相對以提高磁場利用效率。 The voice coil motor provided by the present invention uses a cylindrical fixing assembly to completely face a cylinder wall made of a magnetic material with the coil group to improve magnetic field utilization efficiency.
綜上所述，本發明確已符合發明專利之要件，遂依法提出專利申 請。惟，以上所述者僅為本發明之較佳實施方式，自不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝之人士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於以下申請專利範圍內。 In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. please. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.
10‧‧‧音圈馬達 10‧‧‧ voice coil motor
110‧‧‧外殼 110‧‧‧Shell
112‧‧‧底板 112‧‧‧floor
114‧‧‧第一側板 114‧‧‧First side panel
116‧‧‧第二側板 116‧‧‧Second side panel
118‧‧‧開口 118‧‧‧ openings
114a、114b‧‧‧端子接槽 114a, 114b‧‧‧ terminal slot
120a‧‧‧第一彈片 120a‧‧‧First shrapnel
120b‧‧‧第二彈片 120b‧‧‧second shrapnel
122‧‧‧第一通孔 122‧‧‧First through hole
124‧‧‧第二通孔 124‧‧‧Second through hole
126‧‧‧第一導接端子 126‧‧‧First lead terminal
128‧‧‧第二導接端子 128‧‧‧Second conductive terminal
130‧‧‧固定組件 130‧‧‧Fixed components
132‧‧‧磁性件 132‧‧‧Magnetic parts
134‧‧‧筒壁 134‧‧‧
135‧‧‧第一圓形框 135‧‧‧ first round frame
136‧‧‧第二圓形框 136‧‧‧second round frame
137‧‧‧固定柱 137‧‧‧ fixed column
138‧‧‧第一突柱 138‧‧‧First pillar
139‧‧‧第二突柱 139‧‧‧second stud
140‧‧‧活動件 140‧‧‧Activities
146‧‧‧線圈組 146‧‧‧ coil set
150‧‧‧承載座 150‧‧‧Hosting
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97116315A TWI410024B (en) | 2008-05-02 | 2008-05-02 | Voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97116315A TWI410024B (en) | 2008-05-02 | 2008-05-02 | Voice coil motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200947836A TW200947836A (en) | 2009-11-16 |
| TWI410024B true TWI410024B (en) | 2013-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97116315A TWI410024B (en) | 2008-05-02 | 2008-05-02 | Voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI410024B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI492493B (en) * | 2010-04-06 | 2015-07-11 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
| TWI454023B (en) * | 2011-01-19 | 2014-09-21 | Wah Hong Ind Corp | Magnetic conducting appratus and voice coil motor |
Citations (4)
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|---|---|---|---|---|
| US5289318A (en) * | 1990-07-31 | 1994-02-22 | Canon Kabushiki Kaisha | Optical apparatus provided with a driving unit for moving a lens |
| TWI250715B (en) * | 2004-10-21 | 2006-03-01 | Sunonwealth Electr Mach Ind Co | Voice coil motor |
| TWM293600U (en) * | 2006-01-26 | 2006-07-01 | Tdk Taiwan Corp | Micro magnetically levitated motor |
| TWM318736U (en) * | 2007-03-05 | 2007-09-11 | Tdk Taiwan Corp | Focus structure of octagonal micro-lens |
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2008
- 2008-05-02 TW TW97116315A patent/TWI410024B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289318A (en) * | 1990-07-31 | 1994-02-22 | Canon Kabushiki Kaisha | Optical apparatus provided with a driving unit for moving a lens |
| TWI250715B (en) * | 2004-10-21 | 2006-03-01 | Sunonwealth Electr Mach Ind Co | Voice coil motor |
| TWM293600U (en) * | 2006-01-26 | 2006-07-01 | Tdk Taiwan Corp | Micro magnetically levitated motor |
| TWM318736U (en) * | 2007-03-05 | 2007-09-11 | Tdk Taiwan Corp | Focus structure of octagonal micro-lens |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200947836A (en) | 2009-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |