CN214590851U

CN214590851U - Integrated injection molding base of OIS motor

Info

Publication number: CN214590851U
Application number: CN202120607239.0U
Authority: CN
Inventors: 王林; 李乾坤
Original assignee: Chengdu Yixun Photoelectric Technology Co ltd
Current assignee: Guoxing Chaogan Chengdu Optoelectronic Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-11-02
Anticipated expiration: 2031-03-25

Abstract

The utility model belongs to optical imaging equipment, and discloses an integrated injection molding base of an OIS motor, which is movably connected and electrified with a bracket of a load lens module, and comprises an integrated base frame formed by injection molding twice and a metal conductor embedded in the base frame, wherein the metal conductor comprises an internal circuit connected with a functional module arranged on the base frame and an external circuit connected with an external conductor; the lower part of the base frame is provided with a pin area for leading out pins of the metal conductor to penetrate out, and the top of the base frame is provided with a connecting area for leading out a contact of the metal conductor to penetrate out; the base frame upper portion has a plurality of grooves of dodging, is being equipped with the wrapping post that is used for fixed coil dodging the inslot, be equipped with the SMD module in the wrapping post, metallic conductor has the connector lug of wearing out the base frame dodging the inslot. The utility model discloses an integral type structure that the formation of moulding plastics had both guaranteed the product circular telegram effect, had also reduced technology and had practiced thrift the cost of labor, reduced the processing procedure risk, promoted product quality.

Description

Integrated injection molding base of OIS motor

Technical Field

The utility model belongs to the technical field of optical imaging equipment, concretely relates to integrative base of moulding plastics of OIS motor.

Background

The OIS is an optical image stabilization system (optical anti-shake system), which uses a sensor to measure the movement information of a lens module and then sends the movement information to a microprocessor, the microprocessor immediately calculates the displacement to be compensated, and then the lens module moves the same displacement at the same speed in the opposite direction through an actuating mechanism connected with the lens module, so that the shake direction and the displacement of the lens module can be compensated, and the influence blur caused by the vibration of a camera can be effectively overcome.

The conventional OIS motor includes, in order from top to bottom, a housing, a front spacer, an upper spring plate, a bracket, a carrier, a coil, a lower spring plate, a rear spacer, and a base, wherein the coil is disposed on the carrier, and a permanent magnet for generating a fixed magnetic field is disposed on the bracket or the base. The base is used as a main bearing structure, so that the electrification and communication control data transmission of an internal structure are realized in a small space, and meanwhile, the process manufacturing is facilitated through reasonable structural design. The conventional base is assembled by a multi-part structure, but the assembly method results in a complicated manufacturing process, high cost, low yield, and unstable structural strength due to the assembly process.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that prior art exists, the utility model provides an integral type base structure of moulding plastics can reach better structural strength under current processing technology, avoids respectively moulding plastics the equipment and causes the higher problem of manufacturing cost.

The utility model discloses the technical scheme who adopts does:

in a first aspect, the present invention provides an integral injection molding base of an OIS motor, which is movably connected to and energized with a support of a loaded lens module, and includes an integral base frame formed by two injection molding processes and a metal conductor embedded in the base frame, wherein the metal conductor includes an internal circuit connected to a functional module disposed on the base frame and an external circuit connected to an external conductor;

the lower part of the base frame is provided with a pin area for leading out pins of the metal conductor to penetrate out, and the top of the base frame is provided with a connecting area for leading out a contact of the metal conductor to penetrate out;

the base frame upper portion has a plurality of grooves of dodging, is being equipped with the wrapping post that is used for fixed coil dodging the inslot, be equipped with the SMD module in the wrapping post, metallic conductor has the connector lug of wearing out the base frame dodging the inslot.

The utility model relates to a set up linking bridge and image sensor's load structure in OIS motor, all parts in the OIS motor all regard as the stiff end with the base, and casing and support all set up on the base, casing and base fixed connection, and the support size is less than the base. The SMD module is a chip structure mounted through an SMT chip mounting process.

Combine the first aspect, the utility model provides a first embodiment of the first aspect, the base frame middle part is equipped with the mounting hole and supplies light to get into in the image sensor of base frame lower part from the camera lens module.

In combination with the first embodiment of the first aspect, the present invention provides the second embodiment of the first aspect, wherein the metal conductor is connected to form an integral structure through the outer side and the inner side of the connecting portion before injection molding, and the base frame is formed after injection molding and has a plurality of cutting cuts for the connecting portion to penetrate through in the outer circumferential direction and the inner side of the mounting hole.

With reference to the first aspect and the first and second embodiments thereof, the present invention provides a third embodiment of the first aspect, wherein the base frame is further provided with a plurality of spring plate mounting seats at an upper portion thereof, and the spring plate mounting seats are provided with at least one opening for exposing the contact;

wherein the outer end face of the contact does not exceed the plane of the opening.

In combination with the third embodiment of the first aspect, the present invention provides the fourth embodiment of the first aspect, wherein a protrusion is further disposed on the spring plate mounting seat for fixing a positioning pin and a fixing stopper of the external spring plate.

In combination with the third embodiment of the first aspect, the present invention provides the fourth embodiment of the first aspect, wherein a plurality of outer edges of the upper portion of the base frame are formed to protrude upwards to form a limiting member for limiting the planar movement of the support with the lens module under the external load.

With reference to the third embodiment of the first aspect, the present invention provides the fourth embodiment of the first aspect, wherein a plurality of pin areas are provided at a lower portion of the base frame for a plurality of the pins to be led out.

The utility model has the advantages that:

the utility model optimizes the original two-part split type base structure, adjusts the original flexible flat cable and PCB structure into an integral injection molding structure, and the internal power supply line and the communication control line are communicated through the internal metal electric conductor; compared with a split structure, the integrally formed structure can reduce the cost during manufacturing and has better structural stability and strength.

Drawings

Fig. 1 is a top view of the base structure of the present invention after assembly;

fig. 2 is a bottom view of the base structure of the present invention after assembly;

fig. 3 is a side view of the base structure of the present invention after assembly;

FIG. 4 is an isometric view of the upper viewing angle of the base structure of the present invention after assembly;

fig. 5 is an isometric view of the assembled lower viewing angle of the base structure of the present invention;

fig. 6 is a schematic view of the arrangement structure of the metal conductor in the base frame according to the present invention;

FIG. 7 is a schematic view of another angular arrangement of the metal conductors of the present invention in the base frame;

fig. 8 is a split axial view of the OIS motor according to embodiment 1 of the present invention.

In the figure: 1-base frame, 1.1-avoidance groove, 1.2-cut, 2-metal conductor, 2.1-lead-out pin, 2.2-contact, 3-SMD module, 4-connector lug, 5-positioning pin, 6-mounting hole, 7-coil, 8-limiting piece and 9-fixed stopper.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the embodiment discloses an integral type base structure of moulding plastics who uses at OIS motor

First, the OIS motor structure in this embodiment is described, and as shown in fig. 8, the OIS motor is a micro-electric structure and is mainly used for a device for performing focus adjustment and anti-shake compensation on a micro-camera lens. The OIS motor is connected with the lens module and the image sensor and enables the lens module to have a certain degree of freedom relative to the image sensor and to be electrically controlled to perform regular actions within a certain range.

In order to enable the lens module to generate controllable relative motion, it is necessary to keep the lens module in a relative "floating" state, and push the lens module to act from multiple directions through an electromagnetic structure. The "suspension" state refers to a certain range of freedom of movement of the lens module compared with the influence sensor, and the effect achieved in the prior art is achieved through three movably connected structures and two elastic pieces. The carrier is an annular structure for fixedly connecting the lens module, the bracket is also an annular structure, a hole is formed in the middle of the bracket for accommodating the carrier, an upper elastic sheet is arranged on the upper portion of the bracket, one end of the upper elastic sheet is connected with the carrier, and the other end of the upper elastic sheet is connected with the bracket, so that the carrier is always subjected to restoring force provided by the upper elastic sheet when moving along an axis in the hole of the bracket, and the carrier keeps axially suspended.

The base is used for fixing the image sensor, is provided with an internal control circuit and a power supply circuit and is movably connected with the bracket. The support and the base can move on an axis plane perpendicular to the support hole, the base is provided with a lower elastic sheet structure, the lower elastic sheet structure is connected with the support and the base and is also provided with a structure for connecting an internal carrier, the elastic connection limiting effect can be achieved, and meanwhile, a metal material can be used for replacing a cable to supply power or convey signal current.

Specifically, fig. 8 shows a disassembled exploded view of the conventional OIS motor, which includes, from top to bottom, a housing, an upper spring, a bracket, a carrier, a coil 7, a magnet, a lower spring, and a base. It can be seen that the whole OIS motor has a coherent hole in the middle, the hole is an incident light path, the lower part of the base is an image sensor, the carrier part of the upper part is connected with a lens module through an internal thread, the carrier can move up and down in the support, and the support is movably connected with the base and can move freely in the plane of the upper end face of the base.

The base structure in this embodiment is shown at the bottom of fig. 8, and fig. 8 is only used for showing the relative position relationship between the components, and the specific structure is shown in fig. 1-7. The base structure shown in the figures comprises a base frame 1 and a plurality of functional components arranged on the base frame 1, such as a metal conductor 2 arranged inside the base frame 1 shown in fig. 6 and 7, and the structure comprises a plurality of structural types, or a strip-shaped structure formed by cutting a whole metal material is directly adopted for injection molding, or conductive powder is adopted for extrusion forming of a corresponding conductive structure in the injection molding process of the base frame 1.

The metallic conductor 2 has a plurality of lines, which are mainly used for transmitting electric power, control signals and detection signals to the components on the base frame 1 and other external components belonging to the OIS motor. As can be seen in fig. 6, a plurality of protruding strips are arranged outside and inside the metal conductor 2, and originally before injection molding, the whole or part of the metal conductor 2 is of an integral structure, and is formed by cutting a whole metal plate body, and a material belt structure only used for connection and fixation is arranged outside and inside the metal conductor. Place metallic conductor 2 originally and mould plastics in the mould and form base frame 1 after, because the material area all is in base frame 1 outside, then form a plurality ofly by the material area occupy-place cut 1.2 on base frame 1 outside circumferential surface and the 6 inner walls of inboard mounting hole, form independent complete metallic conductor 2 structure after cutting every material area of cutting 1.2 through the instrument.

The metal conductor 2 is provided with a lead-out pin 2.1 penetrating through the base frame 1 at the lower part of the base frame 1, and is concentrated at two sides of the base frame 1 for connecting external cables. The dashed boxes in fig. 2 show the lead areas, each of which has a plurality of lead-out legs 2.1 bent downward and extending a certain distance. One side of the pin 2.1 is shown in fig. 3, which can be seen to include electrical control terminals for the two coils 7, a VDD terminal for transmitting current to the upper support and other components, an SCL terminal for transmitting control signals to the upper support and other components, and a SDA terminal for transmitting detection signals.

The upper part of the base frame 1 is provided with a plurality of spring plate mounting seats which protrude outwards, and as can be seen in figure 4, the upper parts of four sides of the rectangular base frame 1 are respectively provided with a spring plate mounting seat structure. The structure is a boss structure directly formed during injection molding, two convex parts are further arranged at the upper part, and one part is an outer fixed stopper 9 for limiting the swing of the lower elastic sheet; and the other is a positioning pin 5, a round hole is formed in the lower elastic sheet, the round hole of the lower elastic sheet and the positioning pin 5 are penetrated into the round hole for pre-positioning, and then the lower elastic sheet and the positioning pin are fixed in a welding or viscose mode, so that the stable connection with the fixed end part of the lower elastic sheet is ensured.

An opening is provided on the positioning pin 5 side, which exposes the upper contact 2.2 of the inner metal conductor 2. The edge of the opening is provided with a chamfer angle which can enlarge the opening area, and the inner contact 2.2 is of a square structure, and the end surface of the contact can be protruded when the end surface is kept flush with the opening surface due to the chamfer angle and has a larger fixing area. The corresponding structure on the fixed end of the lower spring is attached to the surface of the contact 2.2 and fixed by means of glue or soldering, so that electrical connection is achieved.

Further, the base frame 1 in this embodiment is manufactured by two-time injection molding, and first, a part of the metal conductor 2 is wrapped by injection molding to form a base structure, the base structure is provided with a protruded winding post, an installation space is arranged in the winding post, a circuit and an SMD module 3 are embedded in the installation space by an SMT surface mount technology, and a single coil 7 is wound outside the winding post. And then, carrying out secondary injection molding to completely wrap the metal conductor 2 to form a complete base frame 1 structure, wherein the part provided with the coil 7 is provided with an avoiding groove 1.1. As can be seen in the figure, the base frame 1 is provided with four avoiding grooves 1.1, meanwhile, a coil 7 and an SMD module 3 are arranged in each avoiding groove 1.1, the SMD module 3 is a patch circuit with a Hall sensor, and data feedback of the movement of the support on an X/Y axis plane is realized through the Hall sensor to form closed-loop control.

Two openings are further formed in two sides of the coil 7 avoiding the groove 1.1, a connector lug 4 of the metal electric conductor 2 is exposed in each opening, and the connector lug 4 is similar to the contact 2.2 and is used for being connected with an external cable or a metal body to carry out current transmission. The coil 7 will have its two ends fixed at the above-mentioned connector lug 4 during winding, and form the electrical connection by way of soldering in the same way, thus form the complete loop, will draw the electric current that the foot 2.1 enters from the lower part and produce the specific magnetic field after flowing through the coil 7, thus control the upper part and set up the regular movement of the magnet in the bottom of the support. While the amount and direction of movement of the magnet are detected by the hall sensor and fed back to the external control unit.

Because of the integral injection molding, a plurality of hollows are arranged on the base frame 1 for reducing the whole weight, and a plurality of limiting parts 8 protruding upwards are arranged on the base frame 1 in the peripheral direction of the upper part in order to be matched with the upper bracket. The limiting members 8 in this embodiment are plate structures having a certain width, and since the support can move on the plane where the upper end surface of the base frame 1 is located, the movement of the support can be limited only within this range by the limiting members 8 around, and the movement limitation is realized by the cooperation with the lower elastic sheet.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims

1. The utility model provides a base of moulding plastics of an organic whole of OIS motor, with the support swing joint and the circular telegram of load lens module, its characterized in that: the metal conductor (2) comprises an integrated base frame (1) formed by injection molding twice and a metal conductor (2) embedded in the base frame (1), wherein the metal conductor (2) comprises an internal circuit of a functional module and an external circuit connected with the external conductor, wherein the internal circuit is connected with the functional module arranged on the base frame (1);

the lower part of the base frame (1) is provided with a pin area for leading out pins (2.1) of the metal conductor (2) to penetrate out, and the top of the base frame is provided with a connecting area for leading out a contact (2.2) of the metal conductor (2);

base frame (1) upper portion has a plurality ofly to dodge groove (1.1), is being equipped with the wrapping post that is used for fixed coil (7) in dodging groove (1.1), be equipped with the SMD module in the wrapping post, metal conductor (2) have connector lug (4) of wearing out base frame (1) in dodging groove (1.1).

2. The integrally molded base of an OIS motor of claim 1 in which: the middle of the base frame (1) is provided with a mounting hole (6) for light to enter the image sensor at the lower part of the base frame (1) from the lens module.

3. The integrally molded base of an OIS motor of claim 2 in which: the metal conductor (2) is connected through the connecting parts on the outer side and the inner side to form an integral structure before injection molding, and the base frame (1) formed after injection molding is provided with a plurality of cutting notches (1.2) for the connecting parts to penetrate through in the circumferential direction of the outer side and the inner side of the mounting hole (6).

4. An integrally molded base for an OIS motor of any of claims 1-3 in which: the upper part of the base frame (1) is also provided with a plurality of spring plate mounting seats, and the spring plate mounting seats are provided with at least one opening for exposing the contact (2.2);

wherein, the outer end face of the contact (2.2) does not exceed the opening plane.

5. The integrally molded base of an OIS motor of claim 4 in which: the elastic sheet mounting seat is also provided with a positioning pin (5) and a fixed stopper (9) which are protruded for fixing an external elastic sheet.

6. The integrally molded base of an OIS motor of claim 4 in which: a plurality of outer side edges on the upper part of the base frame (1) are upwards protruded to form limiting parts (8) for limiting the plane movement of the support with the lens module loaded externally.

7. The integrally molded base of an OIS motor of claim 4 in which: the lower part of the base frame (1) is provided with a plurality of pin areas for a plurality of leading-out pins 2.1 to penetrate out concentratedly and be connected with external equipment.