Base and voice coil motor
By setting up a magnet mounting groove and an upper shrapnel groove on the side wall of the voice coil motor base, the problems of high defect rate and poor accuracy during the voice coil motor assembly process are solved, and a more efficient and accurate assembly process is achieved.
Patent Information
- Application Number
- CN202420577963.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The existing voice coil motors have high defect rate and poor assembly accuracy during assembly process, especially the installation positions of the upper and lower shrapnel are inaccurate, resulting in slow installation speed and uncertain fixed position.
A base is designed, including a second mounting groove on the side wall for mounting the magnet, and a third mounting groove is reserved above the base for mounting the upper shrapnel so that the upper shrapnel and the lower shrapnel can be at the same time. Assembly on the base reduces dependence on special vehicles and improves assembly accuracy.
By installing magnets on the side wall and installing shrapnels above, the assembly difficulty is reduced, assembly efficiency and accuracy is improved, the use of special pressing fixtures is avoided, and the assembly quality of voice coil motors is improved.
Smart Images
Figure CN222192111U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of voice coil motors, and in particular relates to a base and a voice coil motor. Background Art
[0002] Voice coil motors are widely used in autofocus camera modules. The product consists of an iron shell, a gasket, an upper spring, a magnet, a lens carrier, a coil, a lower spring, a base and a terminal. At present, the structure and assembly process of the voice coil motor are complicated, and the following problems exist in the assembly process: 1. When installing the upper spring, the upper spring and the outer shell are usually fixed by glue, and then the upper spring is fixed to the lens carrier through the inner hole of the outer shell through a special pressing fixture. During the pressing process, the specific position of the upper spring cannot be determined, resulting in slow installation speed and inaccurate installation position; 2. When installing the magnet, the magnet is usually adsorbed on the outer shell and then fixed by glue. Since the position of the magnet is easy to move during the adsorption process, the fixed position is inaccurate; 3. The upper spring and the lower spring are installed separately, resulting in the position of the upper spring and the lower spring not corresponding, and it is impossible to produce a good match to fix the lens carrier; In summary, the current voice coil motor has a high defect rate and poor assembly accuracy during the assembly process. Utility Model Content
[0003] In order to solve the current technical problems of high defect rate and poor assembly precision in the assembly process of voice coil motors, the present application provides a base and a voice coil motor.
[0004] In order to solve the above technical problems, this application adopts the following technical solutions:
[0005] A first aspect of an embodiment of the present application provides a base for assembling into a voice coil motor, the base comprising: a base body; a first mounting groove, arranged inside the base body, the first mounting groove being used to mount a lens carrier of the voice coil motor; a second mounting groove, arranged on a side wall of the base body, the second mounting groove being used to mount a magnet of the voice coil motor; a third mounting groove, arranged at the four corners of the base body and arranged above the first mounting groove, the third mounting groove being connected to the first mounting groove, the first mounting groove being used to fix an upper spring sheet of the voice coil motor; a terminal assembly, fixed to the lower end of the base body, a connecting hole being arranged between the first mounting groove and the terminal assembly, the terminal assembly being used to connect the lens carrier and external components.
[0006] In some embodiments, the terminal assembly includes at least two connecting terminals, and the connecting terminals and the base body are integrally formed by injection molding.
[0007] In some embodiments, the outer contour of the base body is rectangular.
[0008] In some embodiments, there are four second mounting grooves, and the four second mounting grooves are respectively arranged on the outer sides of four side walls of the base body.
[0009] The second aspect of the embodiment of the present application provides a voice coil motor, which includes the base, and the voice coil motor also includes: a shell, which is mounted on the base; a lens carrier, which is arranged in the base; a spring assembly, which is arranged in the base, and the spring assembly is used to support the lens carrier; a magnet, which is installed in the second mounting groove of the base.
[0010] In some embodiments, a coil is wound around the lens carrier.
[0011] In some embodiments, the spring sheet assembly includes: an upper spring sheet in a frame shape, the upper spring sheet is arranged at the upper end of the lens carrier; two lower spring sheets in a semi-frame shape, the two lower spring sheets are arranged at the lower end of the lens carrier.
[0012] In some embodiments, the upper spring plate includes: a first bearing portion fixed to the upper end of the lens carrier, the first bearing portion being used to fix the lens carrier; four first connecting portions respectively fixed in four third mounting grooves, the outer contour of the first connecting portion matches the inner groove of the third mounting groove, and the four first connecting portions are respectively connected to the first bearing portion.
[0013] In some embodiments, the lower spring plate includes: a second bearing portion fixed to the lower end of the lens carrier, the second bearing portion being used to fix the lens carrier; two second connecting portions, one end of which is respectively connected to the second bearing portion, and the other ends of the two second connecting portions are respectively connected to the connecting terminals through the connecting holes.
[0014] In some embodiments, four magnets are provided, and the four magnets are respectively installed in four second installation grooves, and the positions of the four magnets correspond to the positions of the coils.
[0015] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:
[0016] A base in the present application is provided with a second mounting groove to install a magnet on the side wall of the base, without the need for positioning through a special carrier, thereby reducing the difficulty of assembly and improving assembly efficiency; at the same time, since the magnet is installed on the side, a third mounting groove can be reserved above the base to install an upper spring plate, so that the upper spring plate and the lower spring plate of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy.
[0017] A voice coil motor in the present application is provided with a second mounting groove to install a magnet on the side wall of the base, without the need for positioning through a special carrier, thereby reducing the difficulty of assembly and improving the assembly efficiency; at the same time, since the magnet is installed on the side, a third mounting groove can be reserved above the base to install the upper spring sheet, so that the upper spring sheet and the lower spring sheet of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy. The upper spring sheet and the lens carrier are fixed by dispensing glue, and can be directly pressed together without interference and without the need for a special pressing fixture, thereby reducing the difficulty of assembly and improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 is a structural schematic diagram of a base according to an embodiment;
[0020] Figure 2 is a structural explosion diagram of a voice coil motor according to an embodiment;
[0021] Figure 3 is a partial structural schematic diagram of a voice coil motor according to an embodiment;
[0022] Figure 4 is a schematic diagram of installing an upper spring sheet of a voice coil motor according to an embodiment;
[0023] Figure 5 The figure is a schematic diagram of installing a lower spring of a voice coil motor according to an embodiment.
[0024] The reference numerals in the accompanying drawings are explained as follows: 100, base; 110, base body; 120, first mounting slot; 130, second mounting slot; 140, third mounting slot; 150, connecting terminal; 200, lens carrier; 210, coil; 211, wire; 300, magnet; 400, upper spring sheet; 410, first bearing part; 420, first connecting part; 500, lower spring sheet; 510, extending terminal; 520, second bearing part; 530, second connecting part; 600, housing. DETAILED DESCRIPTION
[0025] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0026] See also Figure 1
[0027] Figure 1 1 is a schematic diagram of the structure of a base in an embodiment of the present application. As shown in the figure, the base is used to be assembled into a voice coil motor, and the base includes: a base body 110; a first mounting groove 120, which is arranged inside the base body 110, and the first mounting groove 120 is used to install the lens carrier 200 of the voice coil motor; a second mounting groove 130, which is arranged on the side wall of the base body 110, and the second mounting groove 130 is used to install the magnet 300 of the voice coil motor; a third mounting groove 140, which is arranged at the four corners of the base body 110 and is arranged above the first mounting groove 120, the third mounting groove 140 is connected to the first mounting groove 120, and the first mounting groove 120 is used to fix the upper spring piece 400 of the voice coil motor; a terminal assembly, which is fixed to the lower end of the base body 110, and a connecting hole is arranged between the first mounting groove 120 and the terminal assembly, and the terminal assembly is used to connect the lens carrier 200 and external components. By setting the second mounting groove 130 to install the magnet 300 on the side wall of the base, there is no need for positioning through a special carrier, which reduces the difficulty of assembly and improves the assembly efficiency. At the same time, since the magnet 300 is installed on the side, a third mounting groove 140 can be set in the reserved space above the base to install the upper spring piece 400, so that the upper spring piece 400 and the lower spring piece 500 of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy.
[0028] In some embodiments, the terminal assembly includes at least two connection terminals 150, and the connection terminals 150 are integrally formed with the base body 110 by injection molding. The integral molding can effectively reduce the difficulty of assembly and improve the assembly efficiency. The connection terminals 150 are used to connect the electrical signal transmission between the audio signal source or the speaker or the audio receiver.
[0029] In some embodiments, the outer contour of the base body 110 is rectangular. In other embodiments, the base can also be configured to be circular, oval or other shapes according to production requirements.
[0030] In some embodiments, there are four second mounting grooves 130, and the four second mounting grooves 130 are respectively disposed on the outer sides of four side walls of the base body 110. By providing four second mounting grooves 130 and installing four magnets 300, the motor thrust can be increased.
[0031] See also Figure 2 ; Figure 2 This is an exploded view of the structure of a voice coil motor in an embodiment of the present application.
[0032] The second aspect of the embodiment of the present application provides a voice coil motor, the voice coil motor includes the base, the voice coil motor also includes: a housing 600, which is sleeved on the base; a lens carrier 200, which is arranged in the base; a spring assembly, which is arranged in the base, and the spring assembly is used to support the lens carrier 200; and a magnet 300, which is installed in the second installation groove 130 of the base. By setting the second installation groove 130 to install the magnet 300 on the side wall of the base, there is no need to position it through a special carrier, which reduces the difficulty of assembly and improves the assembly efficiency; at the same time, since the magnet 300 is installed on the side, a third installation groove 140 can be set in the reserved space above the base to install the upper spring 400, so that the upper spring 400 and the lower spring 500 of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy. The upper spring 400 and the lens carrier 200 are fixed by dispensing glue, and can be directly pressed together, without interference, and no special pressing fixture is required, which reduces the difficulty of assembly and improves the assembly efficiency.
[0033] See also Figure 3 and Figure 5 , Figure 3 A schematic diagram of a partial structure of a voice coil motor in an embodiment of the present application; Figure 5 Schematic diagram of the installation of a lower spring piece 500 of a voice coil motor in an embodiment of the present application.
[0034] In some embodiments, the spring sheet assembly includes: an upper spring sheet 400 in a frame shape, and the upper spring sheet 400 is arranged at the upper end of the lens carrier 200; two lower spring sheets 500 in a semi-frame shape, and the two lower spring sheets 500 are arranged at the lower end of the lens carrier 200.
[0035] In some embodiments, a coil 210 is wound around the lens carrier 200 , and the coil 210 is connected to the lower elastic sheet 500 via a wire 211 .
[0036] Specifically, the wires 211 are provided with two groups, and the two groups of wires 211 are respectively located at the diagonals of the voice coil motor. The two ends of the coil 210 are respectively connected to the two lower springs through the wires 211, and the two lower springs are respectively connected to the connection terminals 150 to achieve electrical connection.
[0037] See also Figure 2 and Figure 4 , Figure 4 This is a schematic diagram of the installation of an upper spring sheet 400 of a voice coil motor in an embodiment of the present application;
[0038] In some embodiments, the upper spring piece 400 includes: a first bearing portion 410, fixed to the upper end of the lens carrier 200, the first bearing portion 410 is used to fix the lens carrier 200; four first connecting portions 420, the four first connecting portions 420 are located at the four corners of the upper spring piece 400, and are respectively fixed in the four third mounting grooves 140, the outer contour of the first connecting portion 420 matches the inner groove of the third mounting groove 140, and the four first connecting portions 420 are respectively connected to the first bearing portion 410.
[0039] In some embodiments, the first connection portion 420 is triangular, and the third installation groove 140 is a triangular groove.
[0040] Specifically, the first bearing portion 410 is bonded to the lens carrier 200 by glue and then fixed by heat mortise. The first connecting portion 420 is bonded to the third mounting groove 140 by glue and then fixed by heat mortise. A space is reserved above the base to set the third mounting groove 140 to install the upper spring piece 400, so that the upper spring piece 400 and the lower spring piece 500 of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy.
[0041] See also Figure 2 , Figure 3 and Figure 5 .
[0042] In some embodiments, the lower spring piece 500 includes: a second supporting portion 520, fixed to the lower end of the lens carrier 200, and the second supporting portion 520 is used to fix the lens carrier 200; two second connecting portions 530, one end of which is respectively connected to the second supporting portion 520, and the other ends of the two second connecting portions 530 are respectively connected to the connecting terminal 150 through the connecting holes.
[0043] Specifically, the second connecting portion 530 is welded to the position corresponding to the connecting terminal 150 in the first mounting groove 120, and then bonded to the connecting terminal 150 by glue dispensing and fixed by heat mortise; the second bearing portion 520 is bonded to the lens carrier 200 by glue and then fixed by heat mortise. Two protruding terminals 510 are also provided on the lower spring sheet 500. The protruding terminals are located at the diagonal position of the voice coil motor, and the protruding terminals 510 are welded to the wire 211.
[0044] In some embodiments, four magnets 300 are provided, and the four magnets 300 are respectively installed in four second installation grooves 130 , and the positions of the four magnets 300 correspond to the positions of the coils 210 .
[0045] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:
[0046] A base in the present application is provided with a second mounting groove to install a magnet on the side wall of the base, without the need for positioning through a special carrier, thereby reducing the difficulty of assembly and improving assembly efficiency; at the same time, since the magnet is installed on the side, a third mounting groove can be reserved above the base to install an upper spring plate, so that the upper spring plate and the lower spring plate of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy.
[0047] A voice coil motor in the present application is provided with a second mounting groove to install a magnet on the side wall of the base, without the need for positioning through a special carrier, thereby reducing the difficulty of assembly and improving the assembly efficiency; at the same time, since the magnet is installed on the side, a third mounting groove can be reserved above the base to install the upper spring sheet, so that the upper spring sheet and the lower spring sheet of the voice coil motor can be assembled on the same base, which can effectively improve the assembly accuracy. The upper spring sheet and the lens carrier are fixed by dispensing glue, and can be directly pressed together without interference and without the need for a special pressing fixture, thereby reducing the difficulty of assembly and improving the assembly efficiency.
[0048] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0050] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0051] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0052] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. A base for assembling a voice coil motor, It is characterized in that The base comprises: Base body; A first mounting groove is provided inside the base body, and the first mounting groove is used to mount a lens carrier of the voice coil motor; A second mounting groove is provided on the side wall of the base body, and the second mounting groove is used to mount a magnet of a voice coil motor; A third mounting groove is arranged at four corners of the base body and is arranged above the first mounting groove, the third mounting groove is communicated with the first mounting groove, and the first mounting groove is used to fix the upper spring sheet of the voice coil motor; A terminal assembly is fixed to the lower end of the base body, a connecting hole is provided between the first mounting groove and the terminal assembly, and the terminal assembly is used to connect the lens carrier and external components.
2. The base according to claim 1, It is characterized in that The terminal assembly comprises at least two connecting terminals, and the connecting terminals and the base body are integrally formed by injection molding.
3. The base according to claim 1, It is characterized in that The outer contour of the base body is rectangular.
4. The base according to claim 1, It is characterized in that There are four second mounting grooves, and the four second mounting grooves are respectively arranged on the outer sides of the four side walls of the base body.
5. A voice coil motor, It is characterized in that The voice coil motor comprises the base according to any one of claims 1 to 4, and the voice coil motor further comprises: A housing, sleeved on the base; A lens carrier, disposed in the base; A spring assembly is disposed in the base, and the spring assembly is used to support the lens carrier; The magnet is installed in the second installation groove of the base.
6. The voice coil motor according to claim 5, It is characterized in that A coil is wound around the lens carrier.
7. The voice coil motor according to claim 5, It is characterized in that The shrapnel assembly comprises: An upper spring sheet, which is frame-shaped and is disposed on the upper end of the lens carrier; The two lower spring plates are in a semi-frame shape and are arranged at the lower end of the lens carrier.
8. The voice coil motor according to claim 7, It is characterized in that The upper spring sheet comprises: A first bearing portion, fixed to the upper end of the lens carrier, the first bearing portion being used to fix the lens carrier; The four first connection parts are respectively fixed in the four third installation grooves, the outer contour of the first connection part matches the inner groove of the third installation groove, and the four first connection parts are respectively connected to the first bearing part.
9. The voice coil motor according to claim 7, It is characterized in that The lower shrapnel comprises: A second bearing portion, fixed to the lower end of the lens carrier, the second bearing portion being used to fix the lens carrier; One end of the two second connection parts is respectively connected to the second bearing part, and the other ends of the two second connection parts are respectively connected to the connection terminal through the connection hole.
10. The voice coil motor according to claim 6, It is characterized in that There are four magnets, which are respectively installed in the four second installation grooves, and the positions of the four magnets correspond to the positions of the coils.