CN202931163U

CN202931163U - Mini driving motor

Info

Publication number: CN202931163U
Application number: CN 201220509918
Authority: CN
Inventors: 胡小青
Original assignee: Suzhou Beitente Electronic Technology Co Ltd
Current assignee: SHENZHEN TOPVCM CO., LTD.
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-05-08
Anticipated expiration: 2022-09-29

Abstract

The utility model discloses a mini driving motor, comprising an upper cover, an upper pad, an upper spring leaf, a carrier, a coil assembly, a magnet assembly, a lower spring assembly, a lower pad and a pedestal. The pedestal comprises a magnetic conductive body of a flat-plate basic shape, wherein the magnetic conductive body is equipped with a central hole in the center, and the periphery of the magnetic conductive body is fixed with the bottom of the sidewalls of the upper cover; and one side of the magnet assembly close to the coil assembly and the pedestal form a magnetic path penetrating through the coil assembly. The lower pad comprises a pressure plate whose basic shape is a rectangular frame, and the pressure plate presses the outer edges of the lower spring leaves onto the magnetic conductive body of the pedestal. According to the utility model, the concrete position of the pedestal is changed so that the pedestal is intrinsically matched with the upper cover, thereby greatly simplifying the structure of a traditional mini driving motor, and effectively improving working efficiency and yield.

Description

A kind of micro drives motor

Technical field

The utility model belongs to the miniature motor structure design field, is specifically related to a kind of micro drives motor.

Background technology

Micro-camera device has been widely used on mobile phone and notebook computer, and micro drives motor wherein (also being the lens CD-ROM drive motor) is also done less and less.

Traditional micro drives motor generally comprises upper cover, Upper gasket, upper spring sheet, lens carrier, magnetite assembly, coil block, lower gasket, lower spring chip module and base; Traditional upper cover adopts permeability magnetic material to make, the magnetite assembly is positioned at below lid top wall, and magnetite assembly below is without permeability magnetic material, so in the magnetite assembly most magnetic lines of force of each magnetite after passing coil block on enter the upper cover roof, and return this magnetite from the upper cover sidewall, form closed magnetic circuit; Thereby make each magnetite near on the magnetic line of force of lid top wall one side comparatively intensive, and it is comparatively sparse away from the magnetic line of force of upper lid top wall one side, cause coil block in the process that moves up and down along with carrier, magnetic field of living in changes, and affects its Linear-moving effect.

The utility model content

The purpose of this utility model is to provide a kind of structure comparatively to be simplified, and can effectively enhance productivity and the micro drives motor of yields.

The technical scheme that realizes the utility model purpose is: a kind of micro drives motor comprises upper cover, Upper gasket, upper spring sheet, carrier, coil block, magnetite assembly, lower spring assembly and lower gasket; Described Upper gasket, carrier, lower gasket all adopt non-magnet material to make; Described upper cover comprises roof and four sidewalls that are connected with roof, and these four sidewalls surround the bottom and have the containing cavity of opening, and described roof center is provided with loophole; The silk spring that described upper spring sheet comprises outer ring, inner ring and connects described outer ring and inner ring; Described outer ring is in abutting connection with the basal surface setting of Upper gasket, and described inner ring is fixed on carrier top; Described coil block is fixed on the carrier outer wall, and described magnetite assembly is set in outside coil block, and between upper spring sheet and lower spring assembly; Described magnetite assembly comprises four blocks of magnetites, leaves the gap between two adjacent magnetites; Described lower spring assembly comprises two lower shell fragments insulated from each other, and each time shell fragment comprises the silk spring of inner edge, outside and connection inner edge and outside; The inner edge of each time shell fragment is fixed on carrier base, and outer edge abuts lower gasket basal surface arranges; Its design feature is: also comprise the base that is sealed on upper cover containing cavity bottom opening, this base comprises that basic configuration is straight tabular magnetic conduction body, and the center is provided with centre bore, and its neighboring is fixed on the basal surface of upper cover sidewall; Described magnetite assembly forms near a side and the described base of coil block the flux path that passes coil block; Described lower gasket comprises that basic configuration is rectangular box-like pressing plate, and described pressing plate is crimped on the outside of lower shell fragment on base magnetic conduction body.

In technique scheme, described upper cover adopts non-magnet material to make.

In technique scheme, described upper cover adopts permeability magnetic material to make; The magnetite assembly is near also forming a flux path that passes coil block between a side of coil block and upper lid top wall.

In technique scheme, the inside edge of described magnetite assembly is positioned on the magnetic conduction body along the projection of direction from the top down.

In technique scheme, described lower gasket also comprises the supporting bracket that projects upwards from the centre on pressing plate each limit; Each supporting bracket is arranged in the gap of adjacent two magnetites, and each supporting bracket is connected on the outer ring of upper spring sheet.

In technique scheme, the two side ends that each support rim makes progress along the line in coil assembly week is connected on two adjacent magnetites.

The utlity model has positive effect: (1) the utility model by be also the magnetite assembly below the magnetite assembly away from a side of lid top wall base is set, described magnetite assembly forms near a side and this base of coil block the flux path that passes coil block.When upper cover adopted non-magnet material to make, the flux path that coil block still can utilize magnetite assembly and base to form was realized Linear Driving.When upper cover adopts permeability magnetic material to make, the magnetite assembly also forms a flux path with upper lid top wall near a side of coil block, this structure can effectively provide the service efficiency in magnetite assembly magnetic field, and can be in the process that coil block moves along with carrier, for coil block provides a more constant magnetic field, thereby effectively improve the Linear Driving effect; When upper cover adopted non-magnet material to make, the flux path that coil block still can utilize magnetite assembly and base to form was realized Linear Driving.In addition, the utility model uses it by improving the particular location of base in itself as the base that coordinates with upper cover, greatly simplified the structure of traditional micro drives motor, has effectively improved production efficiency and yields.

Description of drawings

Fig. 1 is a kind of front view of the utility model micro drives motor;

Fig. 2 is that micro drives motor shown in Figure 1 is along the cutaway view of A-A line;

Fig. 3 is a kind of explosive view of micro drives motor shown in Figure 1;

Fig. 4 is a kind of explosive view of the utility model micro drives motor the second structure.

Embodiment

(embodiment 1, micro drives motor)

Fig. 1 to Fig. 3 has shown the first embodiment of the utility model micro drives motor, and wherein, Fig. 1 is a kind of front view of the utility model micro drives motor; Fig. 2 is that micro drives motor shown in Figure 1 is along the cutaway view of A-A line; Fig. 3 is a kind of explosive view of micro drives motor shown in Figure 1;

The present embodiment is a kind of micro drives motor that drives the minisize pick-up head lens subassembly, sees that Fig. 1 to shown in Figure 3, comprises upper cover 1, Upper gasket 120, upper spring sheet 2, carrier 3, coil block 4, magnetite assembly 5, lower spring assembly 6, base 7 and lower gasket 9.In the present embodiment, described upper cover 1, Upper gasket 120, upper spring sheet 2, carrier 3 all adopt non-magnet material to make.

It is square that described upper cover 1 comprises that

roof

11 and 12, four sidewalls 12 of four sidewalls that are connected with roof 11 surround, and described roof 11 centers are provided with loophole 13, and described four sidewalls 12 surround containing cavity.

The silk spring 23 that described upper spring sheet 2 comprises outer ring 21, inner ring 22 and connects described outer ring 21 and inner ring 22; Described outer ring 21 is close on Upper gasket 120 basal surfaces, and described inner ring 22 is fixed on carrier top.

Described carrier 3 adopts plastics to make, and the center is provided with inner bolt hole, and external lens subassembly is arranged in this inner bolt hole.

Described coil block 4 is fixed on carrier 3 outer walls, and described magnetite assembly 5 is set in coil block 4 outsides, and between upper spring sheet 2 and lower spring assembly 6.In the present embodiment, described magnetite assembly 5 comprises that four basic configurations are trapezoidal magnetite 51, and each magnetite 51 is the N utmost point or the S utmost point near a side of coil block 4, is the S utmost point or the N utmost point away from a side of coil block 4.In the present embodiment, coil block 4 only has a coil, and in concrete practice, this coil block 4 also can be formed by a plurality of coil combination.

Described lower spring assembly 6 comprises two lower shell fragments 61 insulated from each other, and each time shell fragment 61 comprises inner edge 611, outside 612 and is connected inner edge 611 and the silk spring 613 of outside 612; The inner edge 611 of each time shell fragment 61 is fixed on carrier 3 bottoms, and lower gasket 9 basal surface settings are close in outside 612.

Described base 7 adopts permeability magnetic material to make, and comprises that basic configuration is straight tabular magnetic conduction body 71, and the center is provided with centre bore 74, and its neighboring and upper cover sidewall 12 are fixedly linked, thereby cover the bottom opening of upper cover 1 containing cavity.Described magnetite assembly 5 forms near a side and this base 7 of coil block the flux path that passes coil block 4.

Described lower gasket 9 adopts non-magnetic metal material to make, and comprises that basic configuration is rectangular box-like pressing plate 91, and described pressing plate is crimped on the outside of lower shell fragment on magnetic conduction body upper surface.

Specifically, in the present embodiment, described upper lid top wall 11,, Upper gasket 120, the outer ring of upper spring sheet 2, the roof of lower gasket supporting bracket 92 be all to be fixedly linked by laser welding or bonding mode successively.The pressing plate 91 of lower gasket, the outside 612 of twice shell fragments 61, base 7 also are fixedly linked by laser welding or bonding mode successively.

In the present embodiment, described magnetite assembly 5 forms near a side and this base 7 of coil block 4 flux path that passes coil block 4.In order to make as far as possible the more magnetic line of force pass coil block 4, the inside edge of described magnetite assembly 5 is positioned on magnetic conduction body 71 along the projection of direction from the top down, rather than is arranged in centre bore 74 or magnetic conduction body 61 outsides of magnetic conduction body 71.

It is emphasized that, because the present embodiment lower gasket 9 used and base 7 all adopt metal material to make, and both are close to twice shell fragments 61 and arrange, thus for fear of twice shell fragment 61 short circuits, need at least to make base 7, lower gasket 9 with one side that twice shell fragments 61 contact on insulate.In order to address this problem, can on the outer surface of base 7, lower gasket 9 or lower shell fragment 61, form insulating barrier by chemical treatment or surface-coated; Can certainly be by adding the insulation cushion lamella or insulating film layer overcomes on the adjacent surface between base 7, lower gasket 9, lower shell fragment 61.

(embodiment 2, micro drives motor)

Fig. 4 is a kind of explosive view of the utility model micro drives motor the second structure, has shown the second embodiment of the utility model micro drives motor.

The present embodiment is substantially the same manner as Example 1, difference is: the lower gasket 9 in the present embodiment also comprises the supporting bracket 92 from each limit centre of pressing plate to upper process, and each supporting bracket 92 is arranged in the gap of adjacent two magnetites 51, and its top surface is connected on the basal surface of upper spring sheet outer ring 21.

(embodiment 3, micro drives motor)

The present embodiment is substantially the same manner as Example 1, and difference is: described upper cover 1 adopts permeability magnetic material to make; Magnetite assembly 5 is near also forming a flux path between a side of coil block 4 and upper lid top wall.This structure can effectively provide the service efficiency in magnetite assembly magnetic field, and can in the process that coil block moves along with carrier, for coil block provides a more constant magnetic field, thereby effectively improve the Linear Driving effect.

Obviously, above-described embodiment of the present utility model is only for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection range of the present utility model.

Claims

1. a micro drives motor, comprise upper cover, Upper gasket, upper spring sheet, carrier, coil block, magnetite assembly, lower spring assembly and lower gasket; Described Upper gasket, carrier, lower gasket all adopt non-magnet material to make; Described upper cover comprises roof and four sidewalls that are connected with roof, and these four sidewalls surround the bottom and have the containing cavity of opening, and described roof center is provided with loophole; The silk spring that described upper spring sheet comprises outer ring, inner ring and connects described outer ring and inner ring; Described outer ring is in abutting connection with the basal surface setting of Upper gasket, and described inner ring is fixed on carrier top; Described coil block is fixed on the carrier outer wall, and described magnetite assembly is set in outside coil block, and between upper spring sheet and lower spring assembly; Described magnetite assembly comprises four blocks of magnetites, leaves the gap between two adjacent magnetites; Described lower spring assembly comprises two lower shell fragments insulated from each other, and each time shell fragment comprises the silk spring of inner edge, outside and connection inner edge and outside; The inner edge of each time shell fragment is fixed on carrier base, and outer edge abuts lower gasket basal surface arranges; It is characterized in that:

Also comprise the base that is sealed on upper cover containing cavity bottom opening, this base comprises that basic configuration is straight tabular magnetic conduction body, and the center is provided with centre bore, and its neighboring is fixed on the basal surface of upper cover sidewall; Described magnetite assembly forms near a side and the described base of coil block the flux path that passes coil block; Described lower gasket comprises that basic configuration is rectangular box-like pressing plate, and described pressing plate is crimped on the outside of lower shell fragment on base magnetic conduction body.

2. micro drives motor according to claim 1 is characterized in that: described upper cover adopts non-magnet material to make.

3. micro drives motor according to claim 1 is characterized in that: described upper cover adopts permeability magnetic material to make; The magnetite assembly is near also forming a flux path that passes coil block between a side of coil block and upper lid top wall.

4. micro drives motor according to claim 1 is characterized in that: the inside edge of described magnetite assembly is positioned on the magnetic conduction body along the projection of direction from the top down.

5. micro drives motor according to claim 1 is characterized in that: described lower gasket also comprises the supporting bracket that projects upwards from the centre on pressing plate each limit; Each supporting bracket is arranged in the gap of adjacent two magnetites, and each supporting bracket is connected on the outer ring of upper spring sheet.

6. micro drives motor according to claim 1 is characterized in that: the two side ends that each support rim makes progress along the line in coil assembly week is connected on two adjacent magnetites.