CN207475387U - A kind of voice coil motor that 5-axis movement is realized using memorial alloy - Google Patents

Abstract

The utility model discloses it is a kind of using memorial alloy realize 5-axis movement voice coil motor, including：Housing, upper cover, stent, two groups of magnetites, coil, lower cover and pedestal, two groups of magnetites are correspondingly arranged at the upper and lower position of each coil, one of which magnetite is fixed on the inner top surface of upper cover, another group of magnetite is fixed on lower lid, and the opposite face magnetic pole of two groups of magnetites is identical, for the magnetic pole in magnetic induction line direction and two groups of magnetites after coil energization on same longitudinal axis, the coil is runway coil, and the pedestal is memorial alloy pedestal.After energization, the magnetic pole of each coil magnetite corresponding with its positive upper and lower is attracting or the effect of repelling each other, stent is driven to act downwards or upwards, simultaneously, runway coil realizes deflection lens with it in the corresponding magnetite interaction on upper and lower position, memorial alloy pedestal can realize the movement of camera in the horizontal plane so that the utility model can various dimensions focusing, have the advantages that five axis move.

Description

A kind of voice coil motor that 5-axis movement is realized using memorial alloy

Technical field

The utility model is related to a kind of voice coil motors, particularly relate to a kind of voice coil that 5-axis movement is realized using memorial alloy Motor.

Background technology

Voice coil motor has the characteristics that high frequency sound, high-precision.Its cardinal principle is in a permanent-magnetic field, passes through change The DC current of motor interior loop to control the stretch position of spring leaf, moves up and down so as to drive, realizes focusing.Mobile phone is taken the photograph Picture head widely realizes automatic focusing function using VCM, and the position of camera lens can be adjusted by VCM, and clearly image is presented.

Patent earlier application application No. is 201720508265.1 discloses a kind of voice coil motor, including：One pedestal, One yoke plate, a stent, at least two magnetites and at least two coils of corresponding magnetite setting, pedestal is with yoke plate in cooperation up and down one It rises, the stent, magnetite and coil are arranged in pedestal and yoke plate, and the periphery of stent is equidistantly fixed with the coil, each magnetic Stone is fixed on the pedestal immediately below each coil, and the magnetic induction line direction after each coil is powered is indulged with the magnetic pole of corresponding magnetite same On axis.Magnetite and coil are correspondingly set up and down by the first case, and according to Ampere's law, the current direction after coil is powered is determined The N poles of alignment circle it is upper either under the coil with it immediately below magnetite magnetic pole it is attracting or repel each other, drive stent upward Or downward actuation, supporting band index glass head is made to move up and down change focal length, realizes the purpose of sharp image.But when coil with When drive stent moves up when magnet repels each other or is attracting, the distance of coil and magnet is bigger, between the two Active force is with regard to smaller, when active force between the two reduces, the irremovable set position of coil, and voice coil motor can produce Raw shake, and focus effects are influenced, must just be corresponded to this situation of improvement increases the electric current of coil to ensure the shifting of coil Dynamic distance, it is big so as to cause entire voice coil motor power consumption, and this voice coil motor only drives camera to be moved forward and backward, and it is right Burnt effect is bad.

Utility model content

The purpose of this utility model is to provide one kind can various dimensions focusing, focus effects it is good, and low energy consumption utilizes note Recall the voice coil motor that alloy realizes 5-axis movement.

In order to achieve the above objectives, the solution of the utility model is：

A kind of voice coil motor that 5-axis movement is realized using memorial alloy, including：One upper cover, a stent, two groups of magnetites, At least two coils, a lower cover and a pedestal, the lower cover are fixed on the bottom of upper cover, and pedestal is fixedly mounted on the bottom of lower cover Portion, tool is there are one allowing the mesoporous that camera lens passes through in the middle part of the lower cover, and the coil is equidistantly fixed on the periphery of stent, two groups Magnetite is correspondingly arranged at the upper and lower position of each coil, and one of which magnetite is fixed on the inner top surface of upper cover, another group of magnetite It is fixed on lower lid, and the opposite face magnetic pole of two groups of magnetites is identical, magnetic induction line direction and the magnetic of two groups of magnetites after coil energization On same longitudinal axis, the coil is runway coil for pole, and the pedestal is memorial alloy pedestal.

Further, the coil is four, and four coils are equidistantly fixed on the periphery of the stent, each group magnetite Four pieces are respectively included, is correspondingly arranged at respectively on upper cover corresponding with each coil upper and lower position and lower lid.

Further, four angles difference one baffle of projection of the stent, each runway coil is fixed on a baffle, described Four angles of lower cover are set there are four the short slot for magnetite setting, and one group of magnetite being arranged on lower lid, corresponding matching is in short slot.

Further, the top surface of the stent is equipped with shrapnel on one, and the bottom surface of stent is equipped with lower shrapnel.

Further, the top surface of the stent and bottom surface are respectively equipped with multiple card columns, and the upper shrapnel is equipped with and cradle top surface Card column corresponding matching jack, the lower shrapnel is equipped with the jack coordinated with the card column of cradle bottom surface, makes shrapnel and lower bullet Piece is plugged in the top surface and bottom surface of stent.

Further, it is described to realize that the voice coil motor of 5-axis movement further includes a housing using memorial alloy, it connects together Upper cover and lower cover and the pedestal mounted on lower cover bottom be nested in housing together.

With the above structure, the utility model realizes that the voice coil motor of 5-axis movement is to consolidate coil using memorial alloy Be scheduled on stent, each coil be powered after magnetic induction line direction with the magnetic pole of corresponding magnetite on same longitudinal axis, in this way, each coil Current direction after energization determines the N poles of coil upper or under, the magnetic pole phase of coil magnetite corresponding with its positive upper and lower Inhaling the effect of either repelling each other drives stent to act downwards or upwards, and supporting band index glass head is made to move up and down change focal length, realizes clear The purpose of clear image；Simultaneously as coil be runway coil, whether the coil of different location is controlled to be powered with upper and lower orientation Camera lens beat can be achieved in the correspondence magnetite interaction put, and memorial alloy pedestal can realize the shifting of camera in the horizontal plane It is dynamic so that the utility model can various dimensions focusing, have the advantages that five axis move.

When coil moves from lower to upper, which repels each other with the magnetite on pedestal, but with being fixed on yoke plate inner top surface Magnetite is attracting, therefore, when moving on the coil, it is only necessary to coil be made to be moved in defined stroke with relatively small electric current, phase Compared with case before the patent earlier application application No. is 201720508265.1, the utility model can reduce the energy consumption of voice coil motor； Similarly, during coil and stent move down, the magnetite of the coil and yoke plate inner top surface repels each other, and with the magnetic on pedestal Stone is attracting, can equally complete to focus with smaller electric current, reduces power consumption.

Description of the drawings

Fig. 1 is the exploded view of the utility model.

Fig. 2 is the constitutional diagram of the utility model.

Fig. 3 is the sectional view of the utility model.

Specific embodiment

In order to which the technical solution of the utility model is explained further, below by specific embodiment come to the utility model into Row elaborates.

As shown in Figure 1 to Figure 3, the utility model discloses a kind of voice coil horse that 5-axis movement is realized using memorial alloy Reach, including set from top to down housing 1, upper cover 2, upper shrapnel 3, stent 4, lower shrapnel 5, lower cover 6, pedestal 7, coil 8 and Two groups of magnetites 9.After the voice coil motor is installed in the products such as mobile phone or camera, carrying out in use, above-mentioned each component is usual It is in front and rear setting, makes camera is front and rear to focus, described setting gradually from top to down is only to illustrate a kind of relative position relation, and It does not limit specifically.

The lower cover 6 is fixed on the bottom of upper cover 2, and pedestal 7 is fixedly mounted on the bottom of lower cover 6, connects together Upper cover 2 and lower cover 6 and pedestal 7 mounted on 6 bottom of lower cover are nested with together in housing 1；6 middle part of lower cover has one A mesoporous 61 that camera lens is allowed to pass through, the coil 8 are equidistantly fixed on the periphery of stent 4, and two groups of magnetites 9 are correspondingly arranged at each line The upper and lower position of circle 8, one of which magnetite 9 are fixed on the inner top surface of upper cover 2, and another group of magnetite 9 is fixed on lower cover 6, And the opposite face magnetic pole of two groups of magnetites 9 is identical, the magnetic induction line direction after the energization of coil 8 and the magnetic pole of two groups of magnetites 9 are indulged same On axis, the coil 8 is runway coil, and the pedestal 7 is memorial alloy pedestal.

As shown in Figure 1, in the present embodiment, runway coil 8 is four, and projection one outward is distinguished at four angles of the stent 4 Baffle 41, each runway coil 8 are fixed on a baffle 41, and each group magnetite 9 respectively includes four pieces, be correspondingly arranged at respectively with respectively In the corresponding upper cover 2 in 8 upper and lower position of runway coil and lower cover 6, four angles of the lower cover 6 set that there are four to be set for magnetite 9 The short slot 62 put is arranged on one group of 9 corresponding matching of magnetite on lower cover 6 in short slot 62, is arranged on four pieces of 2 inner top surface of upper cover Magnetite 9 can be solid by glue or other modes are fixed.

Still as shown in Figure 1, the top surface and bottom surface of the stent 4 are respectively equipped with multiple card columns 42, the upper shrapnel 3 be equipped with The jack 31 of 42 corresponding matching of card column of 4 top surface of stent, the lower shrapnel 5 is equipped with to be inserted with what the card column 42 of 4 bottom surface of stent coordinated Hole 51 makes shrapnel 3 and lower shrapnel 5 be plugged in the top surface and bottom surface of stent 4.

Assuming that the N poles for the magnetite 9 being arranged on lower cover 6 are upward, then the N poles court of the magnetite 9 of 2 inner top surface of upper cover is arranged on Under, when runway coil 8 is powered, according to Ampere's law, if controlling the electric current of each runway coil 8 in clockwise direction, line Downward, the N poles of each coil 8 are repelled each other with corresponding to the N poles of magnetite 9 below for the N poles of circle 8, and the S poles of the coil 8 in upper cover 2 with pushing up The magnetite 9 in face is attracting, makes coil 6 that stent 3 be driven to move up, during coil 6 gradually moves up, coil 6 and lower section 7 active force of magnetite is less and less, and increasing with 7 active force of magnetite above it, therefore, only need to be with smaller in the coil 6 Electric current i.e. be movable to scheduled distance, i.e., with smaller electric current complete focus；Simultaneously as coil 8 is runway coil, control Whether making different runway coils 8 and be powered, the runway coil of energization can be made to be acted with the magnetite 9 of lower position thereon, and Cold runway coil 8 will not then move, and stent can be made to generate beat action, and memorial alloy pedestal 7 can realize that stent 4 exists Movement on horizontal plane so that the utility model can various dimensions focusing, have the advantages that five axis move.

If controlling the electric current of each runway coil 8 in counterclockwise, the N poles of the coil 8 upward, the S poles of the coil 8 Repel each other with extremely attracting and with upper cover 2 the magnetites 9 of N of the magnetite 9 of lower cover 6, can make coil 8 that stent 4 be driven to move down, upper shrapnel 2 provide reaction force with lower shrapnel 4, carry out the interaction force generated between balance coil 8 and magnetite 9, move stent 4 To scheduled position, the camera lens on stent 4 is made to achieve the purpose that focusing.It similarly, equally can be into during stent 4 moves down Row various dimensions are focused, and realize 5-axis movement.

The utility model voice coil motor is that coil 8 is fixed on stent 4, each coil 8 be powered after magnetic induction line direction with The magnetic pole of corresponding magnetite on same longitudinal axis, in this way, each coil 8 be powered after current direction determine the N poles of coil 8 upper or Person under, the attracting effect of either repelling each other of magnetic pole of the coil 8 magnetite 9 corresponding with its positive upper and lower drive stent 4 downwards or Action upwards makes stent 4 that camera lens be driven to move up and down change focal length, realizes the purpose of sharp image.The top surface of coil 8 corresponds to position In one group of magnetite 9 of 2 inner top surface of upper cover, the bottom surface of coil 8 corresponds to another group of magnetite 9 being located on lower cover 6, and two groups of magnetites 9 in the design that repels each other, and when coil 8 moves from lower to upper, which repels each other with the magnetite 9 on lower cover 6, but with being fixed on upper cover 2 The magnetite 9 of inner top surface is attracting, therefore, when the coil 8 moves up, it is only necessary to make coil 8 in defined row with relatively small electric current It is moved in journey, the energy consumption of voice coil motor can be reduced；Similarly, during coil 8 and stent 4 move down, the coil 8 with it is upper The magnetite 9 of 2 inner top surface of lid repels each other, and attracting with the magnetite 9 on lower cover 6, can equally complete to focus with smaller electric current, reduces Power consumption.Since coil 8 is runway coil, meeting stent 4 drives camera lens to generate after controlling the not exclusively energization of different runway coils Beat, memorial alloy pedestal 7 can realize the movement of camera in the horizontal plane, so that the utility model can various dimensions pair Coke has the advantages that the movement of five axis.

The product form and style of above-described embodiment and schema and non-limiting the utility model, any technical field The appropriate variation or modification that those of ordinary skill does it all should be regarded as not departing from the patent category of the utility model.

Claims (6)

1. a kind of voice coil motor that 5-axis movement is realized using memorial alloy, which is characterized in that including：One upper cover, a stent, two Group magnetite, at least two coils, a lower cover and a pedestal, the lower cover are fixed on the bottom of upper cover, and pedestal is fixedly mounted on down The bottom of lid, for tool there are one the mesoporous that camera lens passes through is allowed, the coil is equidistantly fixed on the outer of stent in the middle part of the lower cover Week, two groups of magnetites are correspondingly arranged at the upper and lower position of each coil, and one of which magnetite is fixed on the inner top surface of upper cover, separately One group of magnetite is fixed on lower lid, and the opposite face magnetic pole of two groups of magnetites is identical, coil be powered after magnetic induction line direction with two groups For the magnetic pole of magnetite on same longitudinal axis, the coil is runway coil, and the pedestal is memorial alloy pedestal.

2. a kind of voice coil motor that 5-axis movement is realized using memorial alloy as described in claim 1, it is characterised in that：It is described Coil is four, and four coils are equidistantly fixed on the periphery of the stent, and each group magnetite respectively includes four pieces, right respectively It should be arranged on upper cover corresponding with each coil upper and lower position and lower lid.

3. a kind of voice coil motor that 5-axis movement is realized using memorial alloy as claimed in claim 2, it is characterised in that：It is described Four angles difference one baffle of projection of stent, each runway coil are fixed on a baffle, and four angles of the lower cover are equipped with four A short slot for magnetite setting, one group of magnetite being arranged on lower lid, corresponding matching is in short slot.

4. a kind of voice coil motor that 5-axis movement is realized using memorial alloy as described in claim 1, it is characterised in that：It is described The top surface of stent is equipped with shrapnel on one, and the bottom surface of stent is equipped with lower shrapnel.

5. a kind of voice coil motor that 5-axis movement is realized using memorial alloy as claimed in claim 4, it is characterised in that：It is described The top surface and bottom surface of stent are respectively equipped with multiple card columns, and the upper shrapnel is equipped with slotting with the card column corresponding matching of cradle top surface Hole, the lower shrapnel are equipped with the jack coordinated with the card column of cradle bottom surface, shrapnel and lower shrapnel are made to be plugged in the top surface of stent And bottom surface.

6. a kind of voice coil motor that 5-axis movement is realized using memorial alloy as described in claim 1, it is characterised in that：Also wrap A housing is included, the upper cover and lower cover that connect together and the pedestal mounted on lower cover bottom are nested in housing together.