Optical driving assembly

Abstract

The utility model discloses an optical driving assembly. The optical driving assembly comprises a plastic block, an electronic element, a metal branch, a metal plate and a plastic body. The plastic block is provided with a first face and a second face which are opposite, the electronic element is arranged on the first face of the plastic block, the metal branch is embedded in the plastic block, at least part of the metal branch is exposed out of the first face of the plastic block and electrically connected with the electronic element, and the metal plate is arranged on the second face of the plastic block. At least part of the plastic block and at least part of the metal plate are embedded in the plastic body. The metal plate is arranged on the outer surface of the plastic block subjected to one-time injection molding to replace the mode that the metal plate and the metal branch are jointly embedded in the plastic block subjected to one-time injection molding, so that the situation that a material pressing hole is formed in the metal plate when the plastic block is subjected to one-time injection molding can be avoided, and the integrity and the structural strength of the metal plate are further improved; and the metal plate and the metal branch can be isolated by the plastic block, so that the phenomenon of lap joint short circuit between the metal plate and the metal branch is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of camera devices, in particular to an optical driving component. Background Art

[0002] A camera module includes an optical driving component for driving an optical element such as a lens or a prism to move. The optical element is disposed on the optical driving component or another mating component, and the optical driving component cooperates with the another mating component to drive the optical element to perform zooming, focusing, anti-shake, etc. In the prior art, the optical driving component includes a plastic block formed by one-time injection molding and a plastic body formed by secondary injection molding. A metal plate and a plurality of metal branches are embedded in the plastic block formed by one-time injection molding. If the metal plate and the metal branches are jointly embedded in the plastic block formed by one-time injection molding, since the metal branches and the metal plate are overlapped, when the plastic block is formed by one-time injection molding, it is necessary to position the opposite sides of the metal branches through a jig, and thus a plurality of pressing holes for the jig to pass through are provided on the metal plate. The plurality of pressing holes will not only reduce the structural strength of the metal plate, but also when the metal plate and the metal branches are jointly embedded in the plastic block formed by one-time injection molding, the metal branches are prone to displacement during the injection molding of the plastic block, and further, a short circuit phenomenon is likely to occur between the metal plate and the metal branches. In addition, the setting of the pressing holes will also reduce the usable area of the metal plate. Further, when the metal plate is made of a magnetic material, the setting of the pressing holes will also affect the magnetic shielding effect or magnetic attraction of the metal plate.

[0003] Therefore, the existing optical driving component needs to be improved. Summary of the Invention

[0004] The purpose of the utility model is to provide an optical driving component, which can at least effectively prevent the occurrence of a short circuit phenomenon between the metal plate and the metal branches.

[0005] The purpose of the utility model is realized by adopting the following technical solutions:

[0006] An optical driving component includes:

[0007] A plastic block having opposite first and second faces;

[0008] An electronic component disposed on the first face of the plastic block;

[0009] A metal branch embedded in the plastic block, at least part of the metal branch exposed from the first face of the plastic block and electrically connected to the electronic component;

[0010] A metal plate mounted on the second face of the plastic block;

[0011] The plastic body, at least part of the plastic block and at least part of the metal plate are embedded in the plastic body.

[0012] Preferably, a pressure hole corresponding to the metal branch is provided on the second surface of the plastic block. The pressure hole is used for a pressure pin to pass through and position the metal branch, and the metal plate covers the pressure hole; and / or,

[0013] An opening is provided on the first surface of the plastic block, and at least part of the metal branch is exposed from the opening to be electrically connected to the electronic component.

[0014] Preferably, a convex column is provided on the plastic block, and a riveting piece is provided on the metal plate. The riveting piece is used for riveting with the convex column so that the metal plate is fixedly installed on the plastic block.

[0015] Preferably, the number of the riveting pieces is one or more. When the number of the riveting pieces is multiple, the multiple riveting pieces surround to form a through hole for the convex column to pass through;

[0016] The multiple riveting pieces have an open state and a closed state. When the metal plate is installed on the plastic block, the multiple riveting pieces are in the open state, and the area of the through hole is larger than the cross-sectional area of the convex column, so that the multiple riveting pieces do not contact the convex column and thus there is no interference fit between the metal plate and the plastic block. When the metal plate is installed on the plastic block, the multiple riveting pieces are in the closed state, and the area of the through hole is smaller than the cross-sectional area of the convex column, so that the multiple riveting pieces are riveted with the convex column and thus the metal plate and the plastic block are fixedly fitted.

[0017] Preferably, a first recess is provided on the second surface of the plastic block, the convex column extends outward from the bottom surface of the first recess, a first bent portion is provided at a position of the metal plate corresponding to the first recess, and the riveting piece is provided on the first bent portion.

[0018] Preferably, one of the plastic block and the metal plate is provided with a riveting hole, and the other is provided with a riveting post. The metal plate and the plastic block are riveted and fixed to each other through the riveting post and the riveting hole; and / or, an adhesive layer is provided between the metal plate and the plastic block, and the metal plate is adhesively fixed to the plastic block through the adhesive layer.

[0019] Preferably, at least part of the edge of the metal plate is embedded in the plastic body; and / or,

[0020] The outer surface of the metal plate facing away from the plastic block is flush with the outer surface of the plastic body on the second surface of the plastic block.

[0021] Preferably, glue-catching holes are provided at the edges of the metal plate, and at least part of the plastic body is embedded in the glue-catching holes.

[0022] Preferably, the electronic component includes a coil. A groove for accommodating the coil is provided on the first surface of the plastic block. The metal plate is made of a magnetic material, and the projection of the coil on the plastic block does not exceed the projection range of the metal plate on the plastic block; and / or,

[0023] The plastic body includes a bottom wall and a side wall provided on the bottom wall. The metal plate and the insulating block are located on the bottom wall and / or the side wall of the plastic body.

[0024] Preferably, the plastic block wraps and fixes the metal branch through one-time injection molding. The metal plate is installed and fixed on the plastic block after one-time injection molding. The plastic body wraps and fixes the plastic block and the metal plate through secondary injection molding.

[0025] Compared with the prior art, the beneficial effects of the present utility model at least include:

[0026] For the optical drive assembly of the present utility model, by installing the metal plate on the outer surface of the plastic block after one-time injection molding to replace the metal plate and the metal branch being jointly embedded in the plastic block formed by one-time injection molding, not only can the need to set pressure holes on the metal plate for positioning the metal branch during the one-time injection molding of the plastic block be avoided, thereby increasing the integrity and structural strength of the metal plate, but also by first wrapping and fixing the metal branch with the plastic block, the metal plate and the metal branch can be isolated, effectively preventing the occurrence of the phenomenon of lap short circuit between the metal plate and the metal branch. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective structural schematic diagram of the optical drive assembly according to the first embodiment of the present utility model.

[0028] Figure 2 is an exploded schematic diagram of a perspective of the optical drive assembly according to the first embodiment of the present utility model.

[0029] Figure 3 is another perspective structural schematic diagram of the optical drive assembly according to the first embodiment of the present utility model.

[0030] Figure 4 is an exploded schematic diagram of another perspective of the optical drive assembly according to the first embodiment of the present utility model.

[0031] Figure 5 is a structural schematic diagram of the optical drive assembly according to the first embodiment of the present utility model when the plastic body is not provided.

[0032] Figure 6It is a schematic structural view of an optical drive assembly according to the second embodiment of the present utility model from one perspective.

[0033] Figure 7 It is an exploded view of an optical drive assembly according to the second embodiment of the present utility model from one perspective.

[0034] Figure 8 It is a schematic structural view of an optical drive assembly according to the second embodiment of the present utility model from another perspective.

[0035] Figure 9 It is an exploded view of an optical drive assembly according to the second embodiment of the present utility model from another perspective.

[0036] Figure 10 It is a schematic structural view of the optical drive assembly according to the second embodiment of the present utility model when the plastic body is not provided.

[0037] In the figure: 100, optical drive assembly; 1, plastic block; 11, first surface; 111, opening; 112, groove; 12, second surface; 121, material pressing hole; 122, first depression; 123, first step portion; 124, second depression; 125, second step portion; 13, convex column; 14, riveting hole; 2, metal branch; 3, metal plate; 31, flat portion; 32, first bending portion; 321, riveting piece; 322, through hole; 33, second bending portion; 331, glue grasping hole; 34, riveting column; 4, plastic body; 41, bottom wall; 42, side wall; 5, electronic component; 51, coil; 52, sensor element. Detailed implementation manners

[0038] Now, the exemplary embodiments will be described more comprehensively with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present utility model more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the figures denote the same or similar structures, and thus their repeated description will be omitted.

[0039] The words expressing positions and directions described in the present utility model are all illustrative with reference to the accompanying drawings, but can be changed according to needs, and all changes made are included within the protection scope of the present utility model.

[0040] Refer to Figures 1 to 10, the present utility model provides an optical drive assembly 100. The optical drive assembly 100 can be a device that directly provides a driving force to drive the movement of an optical element, or a cooperating device that cooperates with a device providing a driving force. Of course, it can also be a combination of the two, etc. In this embodiment, the optical drive assembly 100 can be a device that directly provides a driving force to drive the movement of an optical element (not shown). The optical element can be an element such as a lens, a lens, or a prism. The optical drive assembly 100 can include a plastic block 1, a metal branch 2, a metal plate 3, and a plastic body 4. The plastic block 1 can wrap and fix the metal branch 2 by means of one-time injection molding. The metal plate 3 is disposed on the outer surface of the plastic block 1. The plastic body 4 can wrap and fix the plastic block 1 and the metal plate 3 by means of secondary injection molding. The optical drive assembly 100 can further include an electronic component 5, and the electronic component 5 is electrically connected to the metal branch 2.

[0041] Specifically, referring to Figure 2 , Figure 4 , Figure 7 , Figure 9, the plastic block 1 can be rectangular, square, etc. as a whole. The plastic block 1 has opposite first surface 11 and second surface 12, and the electronic component 5 can be arranged on the first surface 11 of the plastic block 1. At least part of the metal branch 2 is embedded in the plastic block 1. The number of the metal branches 2 can be one or more, and at least part of the metal branches 2 can be exposed from the first surface 11 of the plastic block 1. At least part of the metal branches 2 exposed from the first surface 11 of the plastic block 1 are used for electrically connecting with the electronic component 5. That is to say, one end of the metal branch 2 can be electrically connected with the electronic component 5, and the other end of the metal branch 2 can be electrically connected with an external component. The electronic component 5 can perform electrical connection or communication with the external component (not shown) through the metal branch 2. The external component can be a flexible circuit board or a printed circuit board (PCB). The other end of the metal branch 2 can also be electrically connected with other components (not shown) in the optical drive assembly 100. The electronic component 5 can perform electrical connection or communication with other components in the optical drive assembly 100 through the metal branch 2. The electronic component 5 can include a coil 51. The coil 51 is electrically connected with the metal branch 2. The coil 51 can cooperate with a magnet on another mating component to form a driving force to drive the relative movement of the optical drive assembly 100 and another mating component, so as to drive the movement of the optical element. The electronic component 5 can also include a sensor element 52. The sensor element 52 in this embodiment is an integrated circuit (Integrated Circuit, IC) integrated with a Hall Effect Sensor. In other embodiments, it can also be a Hall Effect Sensor. The electronic component 5 can be used to detect the relative position of the plastic body 4 and another mating component to control the position of the optical element, so as to achieve functions such as focusing, zooming or anti-shake. Of course, the electronic component 5 can also be other types of electronic devices. The electronic component 5 and the metal branch 2 can be electrically connected through conductive glue or solder, so that the connection between the electronic component 5 and the metal branch 2 is more stable.

[0042] The metal branch 2 can be produced by stamping, laser cutting and other methods. During production, the metal branch 2 is preferably obtained by stamping. The metal branch 2 is connected with a strip. The strip is preferably obtained by stamping together with the metal branch 2. The strip can connect multiple metal branches 2 together, which is convenient for batch injection molding of the metal branches 2 and the plastic block 1, facilitates automated production, and can produce multiple groups of optical drive assemblies 100 at the same time, improving production efficiency. At the same time, the strip has a positioning effect on the metal branch 2 and can further prevent the position of the metal branch 2 on the plastic block 1 from shifting during the injection molding process.

[0043] As a preferred method, referring to Figure 3 , Figure 4 , Figure 8 , Figure 9, on the first surface 11 of the plastic block 1, an opening 111 and a groove 112 can be provided. At least a part of the metal branch 2 is exposed from the opening 111, and at least a part of the metal branch 2 exposed from the opening 111 is used for electrically connecting with the electronic component 5, that is, the electronic component 5 is electrically connected with the metal branch 2 through the opening 111. The opening 111 not only facilitates the electrical connection between the electronic component 5 and the metal branch 2, but also when the plastic block 1 wraps and fixes the metal branch 2 by one-time injection molding, the metal branch 2 can be positioned through the opening 111 to ensure the accuracy of the position of the metal branch 2. The coil 51 is received in the groove 112 and extends into the corresponding opening 111 through a pair of leads 511 provided to be fixedly connected with the metal branch 2. In this embodiment, the coil 51 is a hollow coil, and the sensor element 52 is located in the hollow formed by the winding of the coil 51 and is welded and fixed to the metal branch 2 located in the opening 111.

[0044] In some embodiments, one end of the metal branch 2 can also protrude from the first surface 11 of the plastic block 1, so that one end of the metal branch 2 is exposed from the first surface 11 of the plastic block 1, so that one end of the metal branch 2 can be electrically connected with the electronic component 5.

[0045] Refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 10 , the metal plate 3 is preferably arranged on the second surface 12 of the plastic block 1, that is, the metal plate 3 is preferably arranged on the side of the plastic block 1 where the electronic component 5 is not arranged. That is, the metal plate 3 is installed on the second surface 12 of the plastic block 1, that is to say, the metal plate 3 is arranged on the second surface 12 of the plastic block 1 by an assembly and fixing method. In this way, the plastic block 1 is arranged between the metal branch 2 and the metal plate 3, that is, the plastic block 1 first wraps and fixes the metal branch 2, and then assembles the metal plate 3, so that the metal branch 2 and the metal plate 3 can be isolated to prevent the phenomenon of lap short circuit between the metal plate 3 and the metal branch 2.

[0046] At least a part of the plastic block 1 and at least a part of the metal plate 3 can be embedded in the plastic body 4, and the plastic block 1 and the metal plate 3 can be buried in the plastic body 4 by injection molding, that is, the plastic body 4 wraps and fixes the plastic block 1 and the metal plate 3 by secondary injection molding. In this embodiment, at least a part of the edge of the plastic block 1 is embedded in the plastic body 4, and at least a part of the edge of the metal plate 3 is embedded in the plastic body 4. The outer surface of the metal plate 3 facing away from the plastic block 1 is preferably flush with the outer surface of the plastic body 4 located on the second surface 12 of the plastic block 1. Thus, the occupied area of the metal plate 3 can be increased, and the wall thickness of the optical driving component 100 will not be increased, which is beneficial to the miniaturization of the optical driving component 100.

[0047] Refer to Figures 1 to 4 ,Figures 5 to 9 , the plastic body 4 may include a bottom wall 41 and a side wall 42 disposed around the bottom wall 41. The bottom wall 41 and the side wall 42 are disposed perpendicularly or substantially perpendicularly. For example, the bottom wall 41 may be in a horizontal position and the side wall 42 may be in a vertical position. The number of the side walls 42 may be one or more. In this embodiment, the number of the side walls 42 is one. Part of the plastic block 1 and / or part of the metal plate 3 may be embedded in the side wall 42 of the plastic body 4. Alternatively, part of the plastic block 1 and / or part of the metal plate 3 may also be embedded in the bottom wall 41 of the plastic body 4. Alternatively, part of the plastic block 1 and / or part of the metal plate 3 may further be embedded in both the bottom wall 41 and the side wall 42 of the plastic body 4 at the same time. In this embodiment, part of the plastic block 1 and part of the metal plate 3 are embedded in the side wall 42 of the plastic body 4. Part of the plastic block 1 and part of the metal plate 3 are fixedly connected to the plastic body 4 by an integrally injection-molded manner, so that the fixing between the plastic block 1 and the metal plate 3 and the plastic body 4 is more stable, and the bonding reliability between the plastic block 1 and the metal plate 3 and the plastic body 4 is increased. The melting point temperature of the material of the plastic block 1 is higher than the melting point temperature of the material of the plastic body 4. In this way, during the secondary injection molding, the plastic block 1 is prevented from being affected and deformed, thereby affecting the accuracy of the positions of the ceramic plate and the metal branch 2.

[0048] The metal plate 3 is preferably made of a material with high structural strength and not easily deformed to ensure that the metal plate 3 has high structural strength. The material of the metal plate 3 is, for example, stainless steel, copper or the like. The metal plate 3 has a supporting effect on the plastic body 4, and the structural strength of the metal plate 3 is preferably greater than the structural strength of the plastic body 4. In this way, the structural strength of the plastic body 4 can be enhanced, and further the structural strength of the overall optical driving component 100 can be enhanced.

[0049] The metal plate 3 is further preferably made of a magnetic material. The projection of the coil 51 on the plastic block 1 preferably does not exceed the projection range of the metal plate 3 on the plastic block 1, that is, the surface area of the metal plate 3 is greater than or equal to the outer shape of the coil 51. Or rather, the outer edge of the coil 51 does not exceed the outer edge of the metal plate 3. The corresponding setting of the metal plate 3 and the coil 51 can prevent the magnetic flux of the coil 51 from leaking outwards, thereby improving the magnetic shielding effect of the metal plate 3. The metal plate 3 can also be adsorbed to a magnet provided on a cooperating component (such as a carrier, a lens or a prism), that is, a magnetic attraction force can be generated between the metal plate 3 and the magnet. Under the action of the magnetic attraction force, the inclination between the optical driving component 100 and the cooperating component can be prevented, thereby avoiding abnormal noise when the optical driving component 100 and the cooperating component move relative to each other.

[0050] In the present application, instead of embedding the metal plate 3 and the metal branch 2 together in the plastic block 1 formed by one-shot injection molding, the metal plate 3 is disposed on the outer surface of the plastic block 1 after one-shot injection molding. This not only avoids the need to set a pressure hole 121 on the metal plate 3 for positioning the metal branch 2 during the one-shot injection molding of the plastic block 1, thereby increasing the integrity and structural strength of the metal plate 3, but also isolates the metal plate 3 from the metal branch 2 by first wrapping and fixing the metal branch 2 with the plastic block 1, effectively preventing the occurrence of lap short circuit between the metal plate 3 and the metal branch 2. Additionally, when the metal plate 3 is made of a magnetic material, it can not only prevent the magnetic flux generated by the coil 51 from leaking outwards, thereby improving the magnetic shielding effect of the metal plate 3, but also the metal plate 3 can be adsorbed to the magnet provided on the cooperating component (such as a carrier, a lens or a prism). The absence of the pressure hole 121 on the metal plate 3 can increase the actual effective area of the metal plate 3 and enhance the attraction force with the magnet, thereby playing a role in resetting or improving the precise alignment of the cooperating component, and at the same time can concentrate the magnetic force of the magnet and prevent the magnetic flux from leaking outwards.

[0051] In a specific embodiment, referring to Figure 2 , Figure 7 , the second surface 12 of the plastic block 1 may be provided with a pressure hole 121 corresponding to the metal branch 2. The pressure hole 121 is used for the pressure pin to pass through and position the metal branch 2. The metal plate 3 may cover the pressure hole 121, that is, the metal plate 3 is disposed on the second surface 12 of the plastic block 1, and the metal plate 3 can shield the pressure hole 121 formed on the plastic block 1 after the pressure pin positions the metal branch 2. The pressure hole 121 is formed when the metal branch 2 is embedded in the plastic block 1. By positioning the metal branch 2 with the pressure pin, the accuracy of the position of the metal branch 2 in the plastic block 1 can be further improved.

[0052] The metal plate 3 can be installed and fixed on the second surface 12 of the plastic block 1 by means of riveting, adhesive bonding, snap connection, etc. The metal plate 3 is preferably disposed in abutment with the second surface 12 of the plastic block 1. In this way, not only can the connection between the metal plate 3 and the plastic block 1 be more stable, but also the overall volume of the optical drive assembly 100 can be reduced.

[0053] Referring to Figures 1 to 5, when the metal plate 3 is installed and fixed to the second surface 12 of the plastic block 1 by riveting, the plastic block 1 may be provided with a convex column 13, that is, a convex column 13 is provided on the second surface 12 of the plastic block 1. The metal plate 3 may be provided with a riveting piece 321 for riveting with the convex column 13 to fix the metal plate 3 to the plastic block 1. The convex column 13 is preferably integrally injection-molded with the plastic block 1. The riveting piece 321 may be integrally formed with the metal plate 3, or the riveting piece 321 may be provided on the metal plate 3 by means such as welding. In this embodiment, the riveting piece 321 is integrally formed with the metal plate 3. For example, the riveting piece 321 may be formed by stamping. The number of the riveting pieces 321 may be one or more. When the number of the riveting pieces 321 is one, a through hole 322 is formed between the metal plate 3 and the riveting piece 321. When the metal plate 3 is installed on the plastic block 1, the area of the through hole 322 is larger than the cross-sectional area of the convex column 13 to ensure that the riveting piece 321 does not contact the convex column 13, prevent the convex column 13 from being scratched and avoid generating plastic chips. Before injecting the plastic body 4, the riveting piece 321 is buckled inward to be riveted with the convex column 13, so that the metal plate 3 is assembled and fixed to the plastic block 1 after the first injection molding by riveting.

[0054] Refer to Figure 2 , Figure 7 , when the number of the riveting pieces 321 is multiple, the multiple riveting pieces 321 surround and form a through hole 322 for the convex column 13 to pass through. The multiple riveting pieces 321 are preferably arranged in pairs. Of course, the multiple riveting pieces 321 may also be arranged non-pairwise. The multiple riveting pieces 321 have an open state and a closed state. When the metal plate 3 is installed on the plastic block 1, the multiple riveting pieces 321 are in the open state. The area of the through hole 322 is preferably larger than the cross-sectional area of the convex column 13 so that the multiple riveting pieces 321 do not contact the convex column 13, thereby enabling the metal plate 3 and the plastic block 1 to be interference-fitted without interference, preventing the convex column 13 from being scratched and avoiding generating plastic chips. After the metal plate 3 is installed on the plastic block 1, the multiple riveting pieces 321 are in the closed state. For example, by buckling the multiple riveting pieces 321 inward, the multiple riveting pieces 321 are in the closed state, and the area of the through hole 322 is smaller than the cross-sectional area of the convex column 13 so that the multiple riveting pieces 321 are riveted to the convex column 13, thereby enabling the metal plate 3 to be assembled and fixed to the plastic block 1 after the first injection molding by riveting, and further enabling the metal plate 3 and the plastic block 1 to be fixedly fitted.

[0055] As a preferred method, refer to Figure 2, a first recess 122 may be provided on the second surface 12 of the plastic block 1, and the convex post 13 extends outward from the bottom surface of the first recess 122, that is, the convex post 13 extends from the bottom surface of the first recess 122 in a direction away from the first surface 11 of the plastic block 1. A first bending portion 32 may be provided at a position of the metal plate 3 corresponding to the first recess 122. That is, the metal plate 3 has a flat portion 31 and a first bending portion 32. The flat portion 31 is in a flat plate shape. The first bending portion 32 preferably bends and extends from the four peripheral edges of the flat portion 31. The number of the first bending portions 32 may be one or more. A first step portion 123 is formed between the first recess 122 and other positions of the second surface 12 of the plastic block 1. The first bending portion 32 may be simultaneously attached to the first step portion 123 and the position of the first recess 122. A riveting piece 321 may be provided on the first bending portion 32. The height of the convex post 13 is preferably less than or equal to the depth of the first recess 122. That is to say, the top surface of the convex post 13 does not protrude beyond other positions of the second surface 12 of the plastic block 1. After the metal plate 3 is riveted and fixed to the plastic block 1, the tops of the convex post 13 and the riveting piece 321 do not protrude beyond other positions of the second surface 12 of the plastic block 1. That is, the convex post 13 and the riveting piece 321 are both located in the first recess 122. When the plastic body 4 is formed by secondary injection molding, the plastic body 4 may cover the first recess 122 and the first bending portion 32. The outer surface of the metal plate 3 facing away from the plastic block 1 and the outer surface of the plastic body 4 located on the second surface 12 of the plastic block 1 are preferably flush. That is, the outer surface of the flat portion 31 of the metal plate 3 facing away from the plastic block 1 and the outer surface of the plastic body 4 located on the second surface 12 of the plastic block 1 are preferably flush. In this way, the overall size of the optical drive assembly 100 can be reduced, which is beneficial to the miniaturization development of the optical drive assembly 100.

[0056] Referring to Figures 6 to 10 , when the metal plate 3 is installed and fixed on the second surface 12 of the plastic block 1 by riveting, a riveting hole 14 may also be provided on the plastic block 1, and a riveting post 34 may also be provided on the metal plate 3. The metal plate 3 and the plastic block 1 may be fixedly connected to each other through the riveting post 34 and the riveting hole 14. The riveting hole 14 may penetrate through the plastic block 1, or the riveting hole 14 may be a blind hole, that is, the riveting hole 14 does not penetrate through the plastic block 1. The riveting post 34 may be integrally formed with the metal plate 3, or the riveting post 34 may be provided on the metal plate 3 by welding or other means. In this embodiment, the riveting post 34 is integrally formed with the metal plate 3. For example, the riveting post 34 may be formed by stamping, and the riveting post 34 is preferably a hollow structure. The outer diameter of the riveting post 34 is preferably greater than or equal to the aperture of the riveting hole 14 to ensure that the metal plate 3 can be stably fixed to the plastic block 1. Of course, in other embodiments, the riveting post 34 may also be provided on the plastic block 1, and the riveting hole 14 may be provided on the metal plate 3.

[0057] When the metal plate 3 is installed and fixed on the second surface 12 of the plastic block 1 by means of adhesion, an adhesive layer (not shown) can be provided between the metal plate 3 and the plastic block 1, and the metal plate 3 can be adhesively fixed to the plastic block 1 through the adhesive layer.

[0058] In a specific embodiment, referring to Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 9 , Figure 10 , a glue-catching hole 331 can be provided at the edge of the metal plate 3. The glue-catching hole 331 preferably penetrates through the metal plate 3. When the plastic body 4 is formed by secondary injection molding, at least part of the plastic body 4 can be embedded in the glue-catching hole 331, so that the bonding force between the metal plate 3 and the plastic body 4 can be improved. The number of the glue-catching holes 331 can be one or more. In this embodiment, the number of the glue-catching holes 331 is two, and the two glue-catching holes 331 can be respectively provided at opposite ends of the metal plate 3.

[0059] As a preferred method, referring to Figure 2 , Figure 7 , a second recess 124 can also be provided on the second surface 12 of the plastic block 1. A second bending portion 33 can be provided at a position of the metal plate 3 corresponding to the second recess 124. The metal plate 3 also has the second bending portion 33. The second bending portion 33 preferably bends and extends from the four peripheral edges of the flat portion 31. The number of the second bending portions 33 can be one or more. The second recess 124 and other positions on the second surface 12 of the plastic block 1 form a second stepped portion 125. The second bending portion 33 can be attached to the second stepped portion 125, and the second bending portion 33 can also be attached to the position of the second recess 124. The glue-catching hole 331 can be provided on the second bending portion 33, and the glue-catching hole 331 can also be provided on the flat portion 31 of the metal plate 3. Or rather, the glue-catching hole 331 can be provided on both the second bending portion and the flat portion 31. When the plastic body 4 is formed by secondary injection molding, the plastic body 4 can cover the second recess 124 and the second bending portion 33. The outer surface of the metal plate 3 facing away from the plastic block 1 and the outer surface of the plastic body 4 located on the second surface 12 of the plastic block 1 are preferably flush, that is, the outer surface of the flat portion 31 of the metal plate 3 facing away from the plastic block 1 and the outer surface of the plastic body 4 located on the second surface 12 of the plastic block 1 are preferably flush. In this way, the overall size of the optical driving component 100 can be reduced, which is beneficial to the miniaturization development of the optical driving component 100.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Without departing from the principles and spirit of the present invention, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and all such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. An optical drive assembly, characterized in that: include: A plastic block having a first surface and a second surface opposite to each other; An electronic component is disposed on the first surface of the plastic block; A metal branch, the metal branch is embedded in the plastic block, at least a portion of the metal branch is exposed from the first surface of the plastic block and is electrically connected to the electronic component; A metal plate, the metal plate is mounted on the second surface of the plastic block; The plastic body includes at least a portion of the plastic block and at least a portion of the metal plate embedded in the plastic body.

2. The optical drive assembly according to claim 1, characterized in that: The second surface of the plastic block is provided with a pressing hole corresponding to the metal branch, the pressing hole is used for a pressing needle to pass through and position the metal branch, and the metal plate covers the pressing hole; and / or, The first surface of the plastic block is provided with an opening, and at least a portion of the metal branch is exposed from the opening to be electrically connected to the electronic component.

3. The optical drive assembly according to claim 1, characterized in that: The plastic block is provided with a convex column, and the metal plate is provided with a rivet sheet, and the rivet sheet is used for riveting with the convex column so that the metal plate is installed and fixed to the plastic block.

4. The optical drive assembly according to claim 3, characterized in that: The number of the rivet plates is one or more. When the number of the rivet plates is more than one, the plurality of rivet plates are arranged to form a through hole for the protrusion to pass through. The plurality of rivet plates have an open state and a closed state. When the metal plate is mounted to the plastic block, the plurality of rivet plates are in an open state, and the area of ​​the through hole is larger than the cross-sectional area of ​​the boss, so that the plurality of rivet plates do not contact the boss, thereby making the metal plate and the plastic block non-interfering. When the metal plate is mounted to the plastic block, the plurality of rivet plates are in a closed state, and the area of ​​the through hole is smaller than the cross-sectional area of ​​the boss, so that the plurality of rivet plates are riveted to the boss, thereby making the metal plate and the plastic block fixedly matched.

5. The optical drive assembly according to claim 3, characterized in that: The second surface of the plastic block is provided with a first recess, the convex column is extended outward from the bottom surface of the first recess, a first bending portion is provided at a position of the metal plate corresponding to the first recess, and the rivet sheet is provided at the first bending portion.

6. The optical drive assembly according to claim 1, characterized in that: One of the plastic block and the metal plate is provided with a rivet hole, and the other is provided with a rivet column, and the metal plate and the plastic block are riveted and fixed to each other through the rivet column and the rivet hole; and / or, an adhesive layer is provided between the metal plate and the plastic block of the optical drive assembly, and the metal plate is bonded and fixed to the plastic block through the adhesive layer.

7. The optical drive assembly according to claim 1, characterized in that: At least a portion of the edge of the metal plate is embedded in the plastic body; and / or, The outer surface of the metal plate facing away from the plastic block is flush with the outer surface of the plastic body located on the second surface of the plastic block.

8. The optical drive assembly according to claim 1, characterized in that: The edge of the metal plate is provided with a glue grabbing hole, and at least a part of the plastic body is embedded in the glue grabbing hole.

9. The optical drive assembly according to claim 1, characterized in that: The electronic component includes a coil, the first surface of the plastic block is provided with a groove for accommodating the coil, the metal plate is made of magnetic material, and the projection of the coil on the plastic block does not exceed the projection range of the metal plate on the plastic block; and / or, The plastic body comprises a bottom wall and a side wall arranged on the bottom wall, and the metal plate and the insulating block are located on the bottom wall and / or the side wall of the plastic body.

10. The optical drive assembly according to claim 1, characterized in that: The plastic block covers and fixes the metal branch through one-time injection molding, the metal plate is installed and fixed on the plastic block after the one-time injection molding, and the plastic body covers and fixes the plastic block and the metal plate through two-time injection molding.

Images