A voice coil motor base, a voice coil motor and a camera module

Abstract

The present invention discloses a voice coil motor base, a voice coil motor with the voice coil motor base, and a camera module. The voice coil motor base includes a base body and electrode terminals. There are two electrode terminals which are arranged on one side edge of the base body. The voice coil motor base further includes a formed tape buried in the base body. The formed tape is connected to the electrode terminals. PIN feet are arranged on the formed tape, and the PIN feet connected to the circuit are arranged inside the voice coil motor. The structure of the present invention is compact, and the processing and assembly are convenient, which well avoids the risk of short circuit between the PIN feet led out after the tape is cut off and the outer shell.

Description

Technical Field

[0001] The present invention relates to the field of electronic devices, and particularly to a voice coil motor base, a voice coil motor and a camera module using the voice coil motor base. Background Art

[0002] The camera module is an important part of electronic devices with camera functions such as mobile phones and tablet computers. The camera module generally includes a printed circuit board, an image sensor, a support base, a voice coil motor and a lens. However, during the production and processing of the base of the traditional voice coil motor, the terminal connecting strip lead-out pins are arranged on both sides of the motor. After the strip is cut off, the lead-out pins are exposed on the outside and are connected to the circuit, posing a high risk of short circuit with the housing. Summary of the Invention

[0003] The purpose of the present invention is to provide a voice coil motor base to solve the above problems in view of the deficiencies in the prior art.

[0004] The technical problems solved by the present invention can be achieved by the following technical solutions:

[0005] A voice coil motor base includes a base body and electrode terminals. There are two electrode terminals arranged on one side edge of the base body. It further includes a formed strip buried in the base body. The formed strip is connected to the electrode terminals. PIN feet are provided on the formed strip, and the PIN feet connected to the circuit are arranged inside the voice coil motor.

[0006] Further, the PIN feet are formed at the connection between the formed strip and the waste strip during processing.

[0007] Further, the electrode terminals are perpendicularly arranged with respect to the formed strip. One end of the electrode terminal is arranged inside the base body, and the other end extends along the height direction of the base body and extends downward out of the base body.

[0008] Further, the formed strip includes a main strip connected to the waste strip and an auxiliary strip. The PIN feet led out after cutting at the connection between the main strip and the waste strip are arranged inside the voice coil motor and are connected to the circuit.

[0009] Further, there are two main strips symmetrically arranged on the left and right sides inside the base body, and two auxiliary strips symmetrically arranged on the front and back sides inside the base body. The two electrode terminals are respectively connected to the two main strips. The waste strip includes an outer ring waste strip and an inner ring waste strip. The main strip and the adjacent auxiliary strip are connected by the inner ring waste strip. A through hole is provided in the middle of the base body, and the inner ring waste strip is arranged in the through hole. The PIN feet led out after cutting at the connection between the main strip and the inner ring waste strip are connected to the circuit. The outer ring waste strip is arranged outside the base body, and the outer side part of the auxiliary strip is connected to the outer ring waste strip.

[0010] Further, the main material tape includes a main material tape body, a first tape and a second tape connected to the inner side surface of the main material tape body. The ends of the first tape and the second tape form PIN feet connected to the circuit, and the electrode terminals are integrally formed with the ends of the main material tape body; the auxiliary material tape includes an auxiliary material tape body, a third tape and a fourth tape connected to the inner side surface of the auxiliary material tape body; the first tape is connected to the corresponding third tape, and the second tape is connected to the corresponding fourth tape.

[0011] A voice coil motor includes the above-mentioned voice coil motor base.

[0012] A camera module includes the above-mentioned voice coil motor.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] By cutting the tape after transitioning from the inner side to the outer side, the PIN feet connected to the circuit are on the inner side of the voice coil motor, that is, the PIN feet on the first tape and the second tape are on the inner side of the voice coil motor. Although the broken feet on the auxiliary material tape are on the outer side of the voice coil motor and touch the housing, the auxiliary material tape is not charged; or the tape and the electrode terminals are designed as a separated structure, and the whole device has a compact structure, is convenient for processing and assembly, and well avoids the risk of short circuit between the PIN feet led out after the tape is cut and the housing. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the voice coil motor base according to the first embodiment of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the formed tape and the waste tape according to the present invention.

[0017] Figure 3 It is a sectional view of the base body and the formed tape according to the present invention.

[0018] Figure 4 It is a schematic structural diagram of the voice coil motor base according to the second embodiment of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the voice coil motor according to the present invention.

[0020] Figure 6 It is a schematic structural diagram of the camera module according to the present invention. Detailed Embodiments

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] See Figures 1 to 6 , a voice coil motor base according to the present invention includes a base body 10 and electrode terminals 20. There are two electrode terminals 20 and they are arranged on one side edge of the base body 10. It also includes a formed tape buried in the base body 10, and the formed tape is connected to the flat electrode terminals 20. PIN pins are provided on the formed tape, and the PIN pins connected to the circuit are arranged inside the voice coil motor.

[0023] PIN pins are formed at the connection between the formed tape and the waste tape during processing.

[0024] The electrode terminals 20 are perpendicularly arranged with respect to the formed tape. One end of the electrode terminals 20 is arranged inside the base body 10, and the other end extends along the height direction of the base body 10 and extends downward out of the base body 10.

[0025] The formed tape includes a main tape 31 connected to the waste tape and an auxiliary tape 32. The PIN pins led out after cutting at the connection between the main tape 31 and the waste tape are arranged inside the voice coil motor and are connected to the circuit.

[0026] There are two main tapes 31 and they are symmetrically arranged on the left and right sides inside the base body 10. There are two auxiliary tapes 32 and they are symmetrically arranged on the front and back sides inside the base body 10. The two electrode terminals 20 are respectively connected to the two main tapes 31. The waste tape includes an outer waste tape 41 and an inner waste tape 42. The main tape 31 and the adjacent auxiliary tape 32 are connected by the inner waste tape 42. A through hole is formed in the middle of the base body 10, and the inner waste tape 42 is arranged in the through hole. The PIN pins led out after cutting at the connection between the main tape 31 and the inner waste tape 42 are connected to the circuit. The outer waste tape 41 is arranged outside the base body 10, and the outer side part of the auxiliary tape 32 is connected to the outer waste tape 41.

[0027] The main tape 31 includes a main tape body 311 and a first tape 312 and a second tape 313 connected to the inner side surface of the main tape body 311. The ends of the first tape 312 and the second tape 313 form PIN pins connected to the circuit. The electrode terminals 20 are integrally formed with the end of the main tape body 311. The electrode terminals 20 are formed by bending downward from the end of the main tape 31 and are perpendicular to the main tape 31. The other end of the main tape body 311 is provided with a flat welding pad 314, and the welding pad 314 is attached to the end surface of the base body 10.

[0028] The auxiliary tape 32 includes an auxiliary tape body 321 and a third tape 322 and a fourth tape 323 connected to the inner side surface of the auxiliary tape body 321. The first tape 312 is connected to the corresponding third tape 322, and the second tape 313 is connected to the corresponding fourth tape 323.

[0029] In order to adapt to the reasonable arrangement of various components inside the voice coil motor, the shapes of the main material tape body 311, the first tape 312, the second tape 313, the auxiliary material tape body 321, the third tape 322, and the fourth tape 323 can be adjusted according to the specific circuit layout. That is, each tape can be a flat strip structure, an arc structure, or a strip structure formed by splicing several together. The inner waste tape 42 can be a U-shaped structure or a strip structure, as long as it can connect the main material tape 31 and the auxiliary material tape 32, this structure is applicable.

[0030] During the processing, the formed tape and the waste tape are an integral structure. The tape is made of metal. The tape is installed in the mold for injection molding. The plastic base body 10 formed by the rubber material and the tape become an integral structure, which is very convenient for processing. After the injection molding is completed, the waste tape is cut off from the formed tape, and the auxiliary material tape body 321 is cut off from the outer waste tape 41; the two ends of the inner waste tape 42 are respectively cut and separated from the corresponding first tape 312, second tape 313, third tape 322, or fourth tape 323, so that the tape is cut off after transitioning from the inside to the outside, and the PIN foot connected to the circuit is on the inner side of the voice coil motor; at this time, the PIN feet on the first tape 312 and the second tape 313 are on the inner side of the voice coil motor. Although the broken feet on the auxiliary material tape 32 are on the outer side of the voice coil motor and touch the housing 60, the auxiliary material tape 32 is not charged, thus well avoiding the risk of short circuit with the housing 60.

[0031] Second embodiment:

[0032] In order to avoid the short circuit phenomenon between the PIN foot connected to the circuit and the housing 60, the tape and the electrode terminal can also be designed as a separated structure. The outer wall of the second formed tape 51 is connected to a rectangular frame-shaped second waste tape (not shown in the figure). The ring-shaped second formed tape is injection molded in the second base body 52, and one end of the second electrode terminal 53 is fixedly inserted into the second base body 52.

[0033] Camera module embodiment:

[0034] The present invention also provides a voice coil motor, which has a voice coil motor base as described in the first and second embodiments above. In addition, the present invention also provides a camera module, which has the voice coil motor as described above. The base body 10 is a frame-shaped member, and the base body 10 is snap-fitted onto the open end of the housing 60, so that a receiving cavity is formed between the base body 10 and the housing 60. The lens is installed in the voice coil motor, the voice coil motor is fixed on the bracket 70, the bracket 70 is installed on the circuit board 80, an image sensor 81 is provided on the circuit board 80 in the bracket 70, and the image sensor 81 is electrically connected to the circuit board 80. The electrode terminals 20 include a positive terminal and a negative terminal, and the two electrode terminals 20 are electrically connected to the circuit board to provide high and low levels to drive the voice coil motor to work. The base body 10, the bracket 70 and the circuit board 80 are connected by a module conductive adhesive tape 90.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A voice coil motor base, comprising a base body and electrode terminals. There are two electrode terminals, which are arranged on one side edge of the base body. Characterized in that: It further includes a formed tape buried in the base body. The formed tape is connected to the electrode terminals. PIN feet are provided on the formed tape, and the PIN feet connected to the circuit are arranged inside the voice coil motor. One end of the electrode terminal is arranged inside the base body, and the other end extends along the height direction of the base body and extends downward out of the base body. A through hole is opened in the middle of the base body. The formed tape includes a main tape and an auxiliary tape connected to the waste tape. The PIN feet led out after cutting at the connection between the main tape and the waste tape are arranged at the inner through hole of the voice coil motor and are connected to the circuit. The broken feet after cutting at the connection between the auxiliary tape and the waste tape are on the outside of the voice coil motor, and the auxiliary tape is not charged.

2. The voice coil motor base according to claim 1, Characterized in that: PIN feet are formed at the connection between the formed tape and the waste tape during processing.

3. The voice coil motor base according to claim 1, Characterized in that: The electrode terminal is vertically arranged with the formed tape.

4. The voice coil motor base according to claim 1, Characterized in that: There are two main tapes, which are symmetrically arranged on the left and right sides inside the base body. There are two auxiliary tapes, which are symmetrically arranged on the front and back sides inside the base body. The two electrode terminals are respectively connected to the two main tapes. The waste tape includes an outer waste tape and an inner waste tape. The main tape and the adjacent auxiliary tape are connected through the inner waste tape. A through hole is opened in the middle of the base body. The inner waste tape is arranged in the through hole. The PIN feet led out after cutting at the connection between the main tape and the inner waste tape are connected to the circuit. The outer waste tape is arranged outside the base body, and the outer side of the auxiliary tape is connected to the outer waste tape.

5. The voice coil motor base according to claim 4, Characterized in that: The main tape includes a main tape body, a first tape and a second tape connected to the inner side surface of the main tape body. The ends of the first tape and the second tape form PIN feet connected to the circuit. The electrode terminal is integrally formed with the end of the main tape body. The auxiliary tape includes an auxiliary tape body, a third tape and a fourth tape connected to the inner side surface of the auxiliary tape body. The first tape is connected to the corresponding third tape, and the second tape is connected to the corresponding fourth tape.

6. A voice coil motor, Characterized in that: It includes the voice coil motor base according to any one of claims 1 to 5.

7. A camera module, Characterized in that: It includes the voice coil motor according to claim 6.

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