KR102483453B1 - Assembly method of driving device, camera module, electronic device and driving device - Google Patents

Abstract

The present invention provides a driving device, a camera module, an electronic device, and a method of assembling the driving device. The drive device according to the present invention includes a base, a Hall element, and a housing, the housing is installed and covered with a base, the base includes a body and a conductor, the Hall element and the conductor are electrically connected, and the housing has a bracket A portion is opened, and a Hall element is exposed outside the housing from the joint portion. According to the driving device, camera module, electronic device, and method of assembling the driving device of the present invention, since the Hall element is exposed outside the housing, when assembling the driving device, the assembly of other parts must first be completed, and each parameter of the driving device is the standard. The Hall element can be mounted after reaching , and since the Hall element does not need to be mounted when each parameter does not reach the standard, waste of the Hall element can be avoided and cost can be saved.

Description

Assembly method of driving device, camera module, electronic device and driving device

The present invention relates to the field of imaging technology, and more particularly to a driving device, a camera module, an electronic device, and a method for assembling the driving device.

With the advancement of science and technology, the application of the camera module is gradually expanding, and now the camera module is mounted on many electronic devices such as cameras, mobile phones, and PCs. Accordingly, the user can conveniently take a picture anytime, anywhere, increasing convenience and fun in life. The camera module includes a fixed focus (FF) camera module and an auto focus (AF) camera module. In the autofocus camera module, a lens is driven and moved by a driving device, and focus is adjusted.

In general, there are two types of voice coil motors of focusing camera modules: open-loop motors and closed-loop motors. The open loop motor changes the magnetic force by the magnitude of the current, and through this, the motor moves the lens to adjust the focus, but there is no feedback and error because it outputs the displacement of the position with respect to the input current. Therefore, accuracy is lacking. The closed-loop motor has a Hall chip disposed inside, and the actual displacement of the lens can be sensed by the Hall chip, and the motor can be continuously adjusted based on the feedback from the Hall chip and the position of the lens can be adjusted. Consistency between the actual position and the input position can be maintained.

In the drive device, the base structure is covered by the housing, and since the Hall element is installed on the side of the base away from the housing, it is necessary to attach the base and the housing after mounting the Hall element on the side wall of the base in advance. However, the drive unit is tested after the assembly is completed and the bonding of the base and the housing is completed. Therefore, if a defective structure occurs in a defective autofocus (AF) motor structure during testing, not only the AF motor but also the Hall element is wasted, resulting in significantly higher cost.

Also, this description is background information and cannot be said to be prior art.

Chinese Patent Publication No. CN101315456A

In view of the above, an object of the present invention is to provide a method of assembling a driving device, a camera module, an electronic device, and a driving device that can prevent waste by mounting a Hall element later.

)(102) 및 도전체를 포함하며, 상기 홀 소자와 상기 도전체는 전기적으로 연결되고, 상기 하우징에는 결구부(缺口部)가 개설되어 있으며, 상기 결구부로부터 상기 홀 소자가 상기 하우징 밖에 노출된다.The drive device according to the present invention includes a base, a hall element, and a housing, the housing is installed to cover the base, and the base is a body (

) 102 and a conductor, the Hall element and the conductor are electrically connected, a bracket is opened in the housing, and the Hall element is exposed outside the housing from the bracket do.

In an embodiment of the present invention, the base body includes a side wall, an opening corresponding to the joint part is formed in the side wall, and the Hall element is installed outside the side wall and electrically connects to the conductor at the opening. connected to

In an embodiment of the present invention, the sidewall has an inner and outer two-layer structure, includes an inner layer and an outer layer, the margin of the inner layer is installed beyond the edge of the outer layer, and the housing covers the edge of the inner layer. is installed.

In an embodiment of the present invention, the base includes two opposing sidewalls.

In an embodiment of the present invention, the drive device further includes a lower spring, a support body, a coil, a magnetic body, and an upper spring, the lower spring is elastically installed between the base and the support body, and the support body is the base is movably installed on the base, the upper spring is elastically installed between the support and the housing, the coil is installed on the support, and the magnetic body is installed inside the housing to correspond to the coil The housing is installed to cover the base, and the lower spring, the support, the coil, the magnetic body, and the upper spring are all disposed within the housing.

In an embodiment of the present invention, the conductor includes a first terminal and a second terminal, the first terminal electrically connects an external circuit to the Hall element, and the second terminal comprises the Hall element 11 ) is electrically connected to the lower spring.

In an embodiment of the present invention, the Hall element is mounted in the opening, and at least a part of the first terminal is exposed from the opening.

In an embodiment of the present invention, the number of second terminals is two, and the number of lower springs is also two, and one second terminal is sequentially electrically connected to one of the two lower springs, and the second terminal is sequentially electrically connected to one of the two lower springs. A second terminal is electrically connected to the other lower spring, one of the two lower springs is electrically connected to one end of the coil, and the other of the lower spring 12 is electrically connected to the other end of the coil 16. is electrically connected to

The camera module according to the present invention includes the driving device according to the present invention described above.

The electronic device according to the present invention includes the camera module according to the present invention described above.

A method of assembling a driving device according to the present invention provides a base including a body and a conductor and a housing in which a bracket is opened, assembling the base and the housing, and testing each parameter of the driving device so that each parameter is the standard. is reached, and when each of the above parameters reaches the criterion, providing a Hall element, wherein the Hall element is electrically connected to the conductor, and the Hall element is moved from the bracket to the housing. and mounting the Hall element from the joint portion of the housing to the base so as to be exposed to the outside.

According to the driving device, camera module, electronic device, and method of assembling the driving device of the present invention, since the Hall element is exposed outside the housing, when assembling the driving device, the assembly of the other parts is first completed, and each parameter of the driving device is The Hall element can be installed after reaching the standard, and since it is not necessary to mount the Hall element when each parameter does not reach the standard, waste of the Hall element can be prevented and cost can be saved.

1 is an assembled view of a driving device according to a first embodiment of the present invention;
Figure 2 is an exploded perspective view of the driving device shown in Figure 1,
Figure 3 is an exploded perspective view of the base in the driving device shown in Figure 1,
Figure 4 is a plan view of the driving device shown in Figure 1;
5 is a cross-sectional view taken along line V-V of FIG. 4;
Fig. 6 is a flow chart of a method for assembling a driving device according to a second embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings. The following examples are intended to illustrate the present invention and are not intended to limit the present invention.

[First Embodiment]

1 to 5, the driving device according to this embodiment includes a base 10, a Hall element 11, a lower spring 12, a support body 14, a coil 16, and a magnetic body 18 , upper spring 20 and housing 22. The lower spring 12 is elastically installed between the base 10 and the support 14 . The support 14 is installed on the base 10 so as to be movable relative to the base 10 . The upper spring 20 is elastically installed between the support 14 and the housing 22, the coil 16 is installed on the support 14, and the magnetic body 18 is the coil 16 in the housing 22 and is installed correspondingly. The housing 22 is covered and installed on the base 10, and the lower spring 12, the support 14, the coil 16, the magnetic body 18 and the upper spring 20 are all disposed within the housing 22 .

In addition, the base 10 includes a base 102 and a conductor 104, the base 102 includes a side wall 106, and an opening 108 is formed in the side wall 106. The Hall element 11 is installed outside the side wall 106 and is electrically connected to the conductor 104 at the opening 108.

Further, in the housing 22, a fitting portion 222 is opened at a position corresponding to the opening 108, and the Hall element 11 is exposed outside the housing 22 from the fitting portion 222.

In this embodiment, the base 10 includes two opposing side walls 106, of which only one side wall 106 has an opening 108. More specifically, the sidewall 106 has an inner and outer two-layer structure. That is, it includes an inner layer 111 and an outer layer 112 . Here, since the edge of the inner layer 111 is installed beyond the edge of the outer layer 112, when the housing 22 is installed to cover the base 10, the edge of the inner layer 111 is covered by the housing 22, but , the outer layer 112 is fully exposed. Therefore, even if the bracket 222 is formed in the housing 22, the sealing performance of the driving device can be secured, and dust or moisture can be prevented from entering the inside of the driving device from the connection between the housing 22 and the side wall 106. can

A protruding column 114 for fixing the lower spring 12 is installed on the body 102 of the base 10.

The conductor 104 of the base 10 is inserted into the body 102 and may be integrally molded by injection molding in detail. The conductor 104 includes a first terminal 116 and a second terminal 118, and the first terminal 116 is electrically connected to the Hall element 11 to electrically connect the Hall element 11 to an external circuit. connect with The second terminal 118 is electrically connected to the lower spring 12 to electrically connect the coil 16 electrically connected to the lower spring 12 to the Hall element 11 .

In detail, there are four first terminals 116, installed at corresponding positions of the opening 108, and at least a portion of the first terminal 116 is exposed from the opening 108 and mounted in the opening 108. It is electrically connected to the Hall element 11. Two second terminals 118 are installed and electrically connected to the Hall element 11, a connecting arm 119 is installed in the conductor 104, and the second terminal 118 has two connecting arms. (119) and connect each.

In this embodiment, the Hall element 11 has a Hall sensor. The Hall element 11 opposes the Hall element 11 and can obtain a positional change of a position sensing magnet (not shown) installed on the support 14 and feed back to the driving device, which is the Hall element 11 ) It is possible to adjust the position of the support 14 on which the lens is mounted by continuously adjusting the driving device by the feedback. Accordingly, the correspondence between the actual position and the input position is maintained to realize closed-loop control of the driving device.

In this embodiment, two lower springs 12 are installed, one end of each lower spring 12 is fixedly connected to the base 10, and the other end is fixedly connected to the support body 14. The lower spring 12 can support the support 14 and also supports the support 14 so as to be movable relative to the base 10 . Specifically, the lower spring 12 includes a first inner ring, a first connection deformation and a first outer ring. Here, the first connection deformable portion is deformable and is connected between the first inner ring and the first outer ring, the first outer ring is fixedly connected to the base 10, and the first inner ring is connected to the support 14 ) is fixedly connected to More specifically, a locking hole 122 is formed in the lower spring 12, and the protruding pillar 114 of the base 10 is locked in the locking hole 122.

In addition, one second terminal 118 is sequentially electrically connected to one of the two lower springs 12, and the other second terminal 118 is electrically connected to the other lower spring 12. One of the two lower springs 12 is electrically connected to one end of the coil 16, and the other of the lower spring 12 is electrically connected to the other end of the coil 16 to form the Hall element 11. It can be electrically connected to the coil 16 via. When electricity passes through the coil 16, it acts with the magnetic body 18 to generate a force that moves the support body 14 up and down, realizing focus control. More specifically, the connecting arm 119 of one second terminal 118 is electrically connected to one of the two lower springs 12, and the other second terminal 118 also connects the connecting arm 119. It is electrically connected to the other lower spring 12 via.

In this embodiment, the support 14 is used to adjust the focus by mounting a lens (not shown) and moving it up and down.

In this embodiment, coil 16 is wound on the outside of support 14 . Of course, the coil 16 may be installed in a method other than the method wound on the outside of the support body 14.

In this embodiment, the magnetic body 18 is installed to correspond to the coil 16 and is located outside the coil 16 . Specifically, the magnetic body 18 may be fixed within the housing 22 . In addition, there are two magnetic bodies 18, and these two magnetic bodies 18 are installed on opposite sides of the support body 14.

In this embodiment, the upper spring 20 has an overall structure, one end is fixedly connected to the support body 14 and the other end is fixedly connected to the housing 22, and the support body 14 is fixedly connected to the housing 22. move about Specifically, the upper spring 20 includes a second inner ring, a second connection deformation and a second outer ring. Here, the second connection deformable portion is deformable and is connected between the second inner ring and the second outer ring, the second outer ring is fixedly connected to the housing 22, and the first inner ring is connected to the support body 14 ) is fixedly connected to

In addition, in the housing 22, the outer wall 224 is installed on the other side where the joint part 222 is not opened, and since the outer wall 224 covers the outside of the base 10, it is possible to secure the sealing property of the driving device. can

In the drive device of this embodiment, since the Hall element 11 is exposed outside the housing 22, when assembling the drive device, first complete the assembly of the other parts of the drive device, and after each parameter of the drive device reaches the standard The Hall element 11 can be mounted, and if each parameter does not reach the standard, the Hall element 11 does not need to be mounted, preventing waste of the Hall element 11 and saving cost.

Of course, it is not necessary to open the opening 108 in the base 102 by extending the conductor 104 to the outside of the base 102. In this case, the Hall element 11 can be mounted from the fastening part 222 of the housing 22 and can be electrically connected to the conductor 104 .

In addition, the drive device may be a drive device of another configuration, such as a ball bearing motor or a shape memory alloy motor. In the case of a ball bearing motor, it is not necessary to include components such as lower springs and upper springs. In the case of a shape memory alloy motor, configurations such as lower springs, coils, upper springs, and magnetic materials are not required.

In addition, as an embodiment of the present invention, a camera module having the above-described driving device is provided.

In addition, as an embodiment of the present invention, an electronic device having the camera module described above is provided.

[Second Embodiment]

Hereinafter, a method of assembling a driving device according to the present invention will be described with reference to FIG. 6 . The assembly method of the drive device according to the present embodiment includes the following steps.

S11: base 10, lower spring 12, support 14, coil 16, magnetic body 18, upper spring 20, and housing 22 are provided, and the driving device is assembled and mounted. form Specifically, the lower spring 12 is elastically installed between the base 10 and the support 14, the support 14 is installed on the base 10 to be movable relative to the base 10, and the upper spring (20) is elastically installed between the support body 14 and the housing 22, the coil 16 is installed on the support body 14, and the magnetic body 18 and the coil 16 are disposed in correspondence with the magnetic body ( 18) into the housing 22, and finally, the base so that the lower spring 12, the support 14, the coil 16, the magnetic body 18 and the upper spring 20 are all located within the housing 22. Install the housing 22 to cover the 10. Here, the base 10 includes a base 102 and a conductor 104, the base 102 includes a side wall 106, an opening 108 is formed in the side wall 106, and a housing ( 22), a bracket 222 is formed at a position corresponding to the opening 108.

Since the drive device manufactured according to the assembly method of the drive device of this embodiment has the same configuration as that of the drive device described in the above-described first embodiment, it will not be described again here.

S13: Each parameter of the driving device is tested to determine whether each parameter reaches a standard.

S15: When each parameter reaches the criterion, the Hall element 11 is provided, the Hall element 11 is electrically connected to the conductor 104, and the Hall element 11 is removed from the bracket 222. The Hall element 11 is mounted on the base 10 from the joint 222 of the housing 22 so as to be exposed outside the housing 22 . Specifically, the Hall element 11 is installed outside the side wall 106 and positioned in the opening 108.

According to the assembly method of the driving device of this embodiment, the assembly of the other parts of the driving device is first completed, and the Hall element 11 is installed when each parameter of the driving device reaches the standard, and if each parameter does not reach the standard, the Hall element 11 is installed. Since the Hall element 11 is not mounted, waste of the Hall element 11 can be eliminated and cost can be saved.

Of course, the assembly method of the driving device according to this embodiment can be applied to driving devices of other configurations such as a ball bearing motor or a shape memory alloy motor, and in the case of a ball bearing motor, even if the lower spring and upper spring are not included. It is good, and the configuration of the lower spring, coil, upper spring, magnetic body, etc. is not required for the shape memory alloy motor.

In the drawing, the size and relative size of each layer and region are drawn larger than the actual size, but this is to make the configuration in the drawing easier to see. In the text, the explanation that a member such as a layer, region, or substrate “forms/is”, “installs/is”, or “locates/is” on another member means that the corresponding component is directly installed on another component. Will be, or include those using intermediate configurations. On the other hand, in the case of "directly forming/being" or "directly installing/being" described in other members, intermediate configurations are not used.

In this specification, unless otherwise defined or limited, descriptions of "mounting", "mounting", "connecting to each other", and "connection" can be understood in a general sense, and for example, may be a fixed connection , It may be a separable connection, it may be an integral connection, it may be a mechanical connection, it may be an electrical connection, it may be a direct connection, it may be a connection by an intermediate component, or it may be a communication between two components. . Those skilled in the art can specifically understand the meaning of the above terms.

Of course, in this specification, "top", "bottom", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical" The direction or positional relationship indicated by terms such as , "horizontal", etc. is a direction or positional relationship based on the drawings, which is for clarifying the technical means of the present invention and for convenience of explanation, and is an expression that limits the present invention. this is not

In this specification, terms such as “first” and “second” indicating the order of elements are used only to distinguish similar elements, so that the elements described in this way are in a specific order, time, space, level, or It does not mean that you need to comply with any other restrictions.

In this specification, the expressions "plurality" and "several" refer to two or more than two unless otherwise specified.

In this specification, "comprises", "comprises" or any other variation thereof is intended to include a non-exclusive inclusion, and includes, for example, other non-disclosed configurations in addition to the listed configurations.

Each technical feature among the embodiments described above can be arbitrarily combined, and to simplify the description, the text does not describe all possible combinations of each technical feature in the above embodiments. As long as there is no particular contradiction in the combination of these technical features, all should be understood as the scope described in this specification.

The above is only a specific embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and those skilled in the art can easily change or replace it within the technical scope disclosed by the present invention, and the protection scope of the present invention should be included within Therefore, the scope of protection of the present invention should follow the scope of the claims.

Claims (11)

In the driving device including the base 10, the Hall element 11, and the housing 22,
The housing 22 is installed to cover the base 10,
The base 10 includes a base 102 and a conductor 104, and the Hall element 11 and the conductor 104 are electrically connected,
A fitting part 222 is opened in the housing 22, and the hall element 11 is exposed outside the housing 22 from the fitting part 222,
The body 102 includes a side wall 106, and an opening 108 corresponding to the joint part 222 is formed in the side wall 106,
The drive device, characterized in that the hall element (11) is installed on the outside of the side wall (106) and electrically connected to the conductor (104) at the opening (108). delete According to claim 1,
The sidewall 106 has an inner and outer two-layer structure, and includes an inner layer 111 and an outer layer 112, and the edge of the inner layer 111 is installed beyond the edge of the outer layer 112,
The driving device, characterized in that the housing 22 is installed to cover the edge of the inner layer (111). According to claim 3,
The drive device, characterized in that the base (10) comprises two said side walls (106) opposed. According to claim 1,
Further comprising a lower spring 12, a support body 14, a coil 16, a magnetic body 18 and an upper spring 20,
The lower spring 12 is elastically installed between the base 10 and the support 14,
The support 14 is installed on the base 10 to be movable relative to the base 10,
The upper spring 20 is elastically installed between the support 14 and the housing 22,
The coil 16 is installed on the support 14,
The magnetic body 18 is installed in the housing 22 to correspond to the coil 16,
The housing 22 is installed to cover the base 10,
The drive device, characterized in that the lower spring (12), the support body (14), the coil (16), the magnetic body (18) and the upper spring (20) are all disposed within the housing (22). According to claim 5,
The conductor 104 includes a first terminal 116 and a second terminal 118,
The first terminal 116 electrically connects an external circuit to the Hall element 11,
The second terminal (118) electrically connects the Hall element (11) to the lower spring (12). According to claim 6,
The Hall element (11) is mounted in the opening (108),
The driving device, characterized in that at least a part of the first terminal (116) is exposed from the opening (108). According to claim 6,
The second terminal 118 is two, and the lower spring 12 is also two,
one said second terminal 118 is electrically connected to one of the two said lower springs 12;
The other second terminal 118 is electrically connected to the other lower spring 12,
One of the two lower springs (12) is electrically connected to one end of the coil (16), and the other of the lower springs (12) is electrically connected to the other end of the coil (16). . A camera module comprising the driving device according to any one of claims 1 and 3 to 8. An electronic device comprising the camera module according to claim 9. Providing a base 10 including a body 102 and a conductor 104 and a housing 22 in which a bracket 222 is opened, and assembling the base 10 and the housing 22,
testing each parameter of the driving device to determine whether each parameter reaches a standard; and
When each parameter reaches the criterion, a Hall element 11 is provided, the Hall element 11 is electrically connected to the conductor 104, and the Hall element 11 is connected to the bracket ( Mounting the hall element 11 from the joint portion 222 of the housing 22 to the base 10 so that the hall element 11 is exposed outside the housing 22 from 222 assembly method.

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