CN204131360U - The OIS loop construction of stabilization voice coil motor - Google Patents

Abstract

The utility model discloses a kind of OIS loop construction of stabilization voice coil motor, it comprises base plate, middle plate and coil.Described middle plate four limit goes out coil plate respectively to extension, and coil plate etches two groups or more interconnective coil, bends and make two groups or more coil overlapping in coil plate, between two groups or more coil; Described base plate is superimposed on the bottom surface of middle plate, and the front and back of base plate has etched wire respectively.The coil plate of the utility model on middle plate etches two groups or more interconnective coil, bend in coil plate, between two groups or more coil and make two groups or more coil overlapping, because the utility model is when coil diameter is thicker, coil turn determination coil plate needed for can driving according to OIS etches the group number of coil, coil height superimposed is successively lower, small volume, greatly reduces the space that VCM takies.

Description

The OIS loop construction of stabilization voice coil motor

Technical field

The utility model relates to a kind of camera installation, particularly relates to a kind of OIS loop construction of stabilization voice coil motor.

Background technology

In VCM industry, simple autofocus motor can not meet the requirement of taking pictures of mobile phone, the birth of OIS, it mobile phone photograph stabilization science and technology is a very large breakthrough, as shown in Figure 1, the stabilization voice coil motor commonly used comprises flexible PCB 1 ', magnet bearing 2 ', lower shell fragment 3 ', magnet 4 ', support coil 5 ', support 6 ', upper shell fragment 7 ', upper cover 8 ', shell 9 ', alloyed copper wire 10 ', induction components and parts 11 ', FP coil 12 ', wherein, flexible PCB 1 ' is an important component in OIS structure.It is to solve the problem of shaking in the process of taking pictures, and namely carries out offset correction in X-axis, Y direction.Utilize the hot-wire coil on flexible PCB 1 ' and magnet 4 ' to act on and produce Ampere force.When Ampere force just sets complete, there is requirement to coil turn.Because VCM does less and less, can the space of coiling also less, so each producer all in research and development, in space little as far as possible, realizes the requirement in the number of turn.In addition, traditional FP coil assembling, its technique assembling flow path comprises the operation such as assembling of the assembling of flexible PCB and tool, the assembling of coil and tool, coil and flexible PCB, whole technological process is very numerous and diverse, difficult, because VCM is very high to required precision, the packaging technology of this multipaths will inevitably produce error, and there is broken string risk, thus causing product yield low, its architectural feature needs the height space of about 0.7 ~ 0.8mm.

At present, this technical field leading technology is in Japan, adopt double sided board etching technique, can by the etching of traditional copper coil on circuit boards, the most I of coil diameter reaches 0.017mm, and gap is minimum is 0.017mm, compared with traditional copper coil, for OIS has reserved very large space on design space, and also more accurate, saving on packaging technology.Because production capacity is inadequate, it is higher in price, and not all VCM businessman can accept its cost pressure brought.Etch process at home is technically difficult to break through this limit, and (domestic current circuit board etching technique is coil diameter 0.03mm, gap 0.03mm), therefore, dealer be badly in need of solving when coil diameter comparatively thick and produce the Ampere force met the demands, reduce VCM(OIS) problem that takes up room.

Utility model content

The purpose of this utility model is the OIS loop construction of the stabilization voice coil motor providing a kind of small volume.

For achieving the above object, technical solution of the present utility model is:

The utility model is a kind of OIS loop construction of stabilization voice coil motor, and it comprises base plate, middle plate and coil; In the middle part of described middle plate, there is through hole, four limits of middle plate go out coil plate respectively to extension, coil plate etches two groups or more interconnective coil, bends in coil plate, between two groups or more coil and make two groups or more coil overlapping; Described base plate is superimposed on the bottom surface of middle plate, and base plate etching has wire, the two ends of wire respectively with on middle plate one group relative and establish in coil plate another organize coil and conduct electricity and connect, make two groups of relative coils connected in series.

The front and back of described base plate has etched wire respectively, the two ends of the wire in described front respectively with on middle plate one group relative and establish in coil plate another organize coil and conduct electricity and connect, the two ends of the wire at the back side respectively with on middle plate another organize two relative and establish in coil plate another organize coil and conduct electricity and connect, make two groups of relative coils connected in series.

One group of described coil is that two coils etched respectively by coil plate front and back are formed, and these two coils are connected by the copper in thorough coil plate through hole or tin conduction.

Described coil plate etches three groups of interconnective coils, overlap after three groups of coil bendings.

Described coil plate presets two folding lines, the two groups of coils being positioned at outside bend inwards according to the folding line of inner side and make the coil of middle a group overlapping with the coil, are positioned at outermost one group of coil and outwards bend according to the folding line in outside and make the coil of outermost one group overlapping with the coil of middle a group.

Described base plate and middle plate adopt double-faced flexible version.

After adopting such scheme, the coil plate of the utility model on middle plate etches two groups or more interconnective coil, in coil plate, bend between two groups or more coil and make two groups or more coil overlapping, because the utility model is when coil diameter is thicker, coil turn determination coil plate needed for can driving according to OIS etches the group number of coil, coil height superimposed is successively lower, small volume, greatly reduce VCM(OIS) space that takies, its architectural feature in height about needs 0.25mm, for height of contour size saves very large space.Meanwhile, the operation of manufacturing of the utility model structure is simplified, and product more Japanese in price is much cheap, can commercially obtain more competitiveness.

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

Accompanying drawing explanation

Fig. 1 is the wheel body exploded view commonly using stabilization voice coil motor;

Fig. 2 is assembly drawing of the present utility model;

Fig. 3 is three-dimensional exploded view of the present utility model;

Fig. 4 is the front view of plate in the utility model;

Fig. 5 is the rear view of plate in the utility model;

Fig. 6 is the front view of the utility model base plate;

Fig. 7 is the rear view of the utility model base plate;

Fig. 8 is first step schematic diagram of plate manufacture craft in the utility model;

Fig. 9 is the second step schematic diagram of plate manufacture craft in the utility model;

Figure 10 is the 3rd step schematic diagram of plate manufacture craft in the utility model.

Embodiment

One, structure

As shown in Figure 2 and Figure 3, the utility model is a kind of OIS loop construction of stabilization voice coil motor, and it comprises base plate 1, middle plate 2 and coil 3.

As shown in Fig. 8 composition graphs 4, Fig. 5, described middle plate 2 is rectangle, and middle part has through hole 21, and four limits of middle plate go out coil plate 22 respectively to extension, coil plate 22 etches three groups of interconnective coils 3, bends in coil plate 22, between three groups of coils 3 and make three groups of coils 3 overlapping.Concrete folding mode is: coil plate 22 presets two folding lines 221,222, the two groups of coils 3 being positioned at outside bend inwards according to the folding line 221 of inner side and make the coil 3 overlapping (as shown in Figure 9) of the coil 3 of middle a group and inner side, are positioned at outermost one group of coil 3 and outwards bend according to the folding line 222 in outside and make the coil 3 of outermost one group overlapping with the coil 3 of middle a group.One group of described coil 3 is that two coils 31,32 etched respectively by coil plate 22 front and back are formed, and these two coils 31,32 are connected by the copper in thorough coil plate through hole or tin conduction.As shown in Figure 4, the winding mode of concrete three groups of coils 311,312,313 is: coil 311 is from the A1 initial line in front around to A2, A2 is communicated with the A3 at coil 311 back side, A3 initial line is around to the A4 of coil 312, A4 is communicated with the A5 in coil 312 front, A5 initial line is communicated with the A7 at coil 313 back side around to the A6 in coil 313 front, A6, and A7 initial line terminates around to A8.Winding mode in other coil plate 22 is identical therewith, repeats no more.A1, A15, B1, B15 in Fig. 4 weld (as Fig. 7 shows) with correspondence position A1, A15, B1, the B15 on base plate 1 respectively by the copper in plate through hole or tin, realize electrical connection, then connect corresponding pin pin.

As Fig. 3, Fig. 5, Fig. 6, shown in Fig. 7, described base plate 1 is superimposed on the bottom surface of middle plate 2, the A8 of plate 2 in Fig. 5, A9, B8, correspondence position A8 in B9 and Fig. 7 on base plate 1, A9, B8, B9 welds, realize conducting of base plate 1 and middle plate 2, on base plate 1, etching has wire 11 respectively, 12, the two ends of wire 11 respectively with on middle plate 2 one group relative and establish in coil plate 22 another organize coil 3 and conduct electricity and connect, namely, A8 and A9 shown in Fig. 5 connects, the two ends of wire 12 respectively with on middle plate 2 another organize two relative and establish in coil plate 22 another organize coil 3 and conduct electricity and connect, namely, B8 and B9 shown in Fig. 5 connects, two groups of relative coils 3 are connected.

Described base plate 1 and middle plate 2 adopt double-faced flexible version.

Two, technique

The utility model is a kind of OIS coil processing technology of stabilization voice coil motor, and it comprises the following steps:

(1) as shown in Figure 8, four limits that middle plate 2 punching becomes are had extend outward coil plate 22 and central authorities have the structure of through hole 21;

(2) preset curve line 221,222 in the outward extending coil plate 22 of middle plate 2;

(3) as shown in Figure 4, the outward extending coil plate 22 of middle plate 2 etches three groups of coils 3, and three groups of coils 3 with folding line 221,222 for line of demarcation;

(4) as shown in Fig. 8, Fig. 4, fold according to folding line 221,222, the two groups of coils 3 being positioned at outside bend inwards according to the folding line 221 of inner side and make the coil 3 overlapping (as shown in Figure 9) of the coil 3 of middle a group and inner side, are positioned at outermost one group of coil 3 and outwards bend according to the folding line 222 in outside and make the coil 3 of outermost one group be superimposed together (as shown in Figure 10) successively with the overlapping coil 3 that makes of coil 3 of middle a group;

(5) as shown in Figure 3, the mode of base plate 1 by bonding is fitted on middle plate 2, makes relative on middle plate 2 and conduction connection reached by coil 3 that is that establish.

It should be noted that, the present embodiment, only for two foldings, three groups of coil plate, also can be designed to a folding, two groups of coils or the embodiment such as three foldings, four groups of coils according to the utility model structure, due to structural similarity, repeat no more.

Emphasis of the present utility model is just: coil is etched on folding middle plate.

The above, be only the utility model preferred embodiment, the coil groups number of coil plate and number of folds can be determined according to needs, therefore the scope of the utility model enforcement can not be limited with this, namely the equivalence change done according to the utility model claim and description with modify, all should still belong in scope that the utility model patent contains.

Claims (6)

1. an OIS loop construction for stabilization voice coil motor, is characterized in that: it comprises base plate, middle plate and coil; In the middle part of described middle plate, there is through hole, four limits of middle plate go out coil plate respectively to extension, coil plate etches two groups or more interconnective coil, bends in coil plate, between two groups or more coil and make two groups or more coil overlapping; Described base plate is superimposed on the bottom surface of middle plate, and base plate etching has wire, the two ends of wire respectively with on middle plate one group relative and establish in coil plate another organize coil and conduct electricity and connect, make two groups of relative coils connected in series.

2. the OIS loop construction of stabilization voice coil motor according to claim 1, it is characterized in that: the front and back of described base plate has etched wire respectively, the two ends of the wire in described front respectively with on middle plate one group relative and establish in coil plate another organize coil and conduct electricity and connect, the two ends of the wire at the back side respectively with on middle plate another organize two relative and establish in coil plate another organize coil and conduct electricity and connect, make two groups of relative coils connected in series.

3. the OIS loop construction of stabilization voice coil motor according to claim 1, it is characterized in that: one group of described coil is that two coils etched respectively by coil plate front and back are formed, these two coils are connected by the copper in thorough coil plate through hole or tin conduction.

4. the OIS loop construction of stabilization voice coil motor according to claim 1, is characterized in that: described coil plate etches three groups of interconnective coils, overlaps after three groups of coil bendings.

5. the OIS loop construction of stabilization voice coil motor according to claim 3, it is characterized in that: described coil plate presets two folding lines, the two groups of coils being positioned at outside bend inwards according to the folding line of inner side and make the coil of middle a group overlapping with the coil, are positioned at outermost one group of coil and outwards bend according to the folding line in outside and make the coil of outermost one group overlapping with the coil of middle a group.

6. the OIS loop construction of stabilization voice coil motor according to claim 1, is characterized in that: described base plate and middle plate adopt double-faced flexible version.