CN102606276B

CN102606276B - Electromagnetic fan clutch

Info

Publication number: CN102606276B
Application number: CN201210104256.8A
Authority: CN
Inventors: 王兆宇; 邢子义; 刘中银
Original assignee: LONGKOU ZHONGYU AUTOMOBILE FAN CLUTCH Co Ltd
Current assignee: LONGKOU ZHONGYU AUTOMOBILE FAN CLUTCH Co Ltd
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2014-05-21
Anticipated expiration: 2032-04-10
Also published as: CN102606276A

Abstract

The invention relates to an electromagnetic fan clutch, which is used for dissipating heat of an automobile engine and aims to be compact in structure and more stable in running. The electromagnetic fan clutch comprises a rotary spindle, electromagnet cores with embedded coils, a driven plate and a driving plate, wherein the electromagnet cores are sequentially sleeved from a support end to a free end along the axial direction of the spindle, the driven plate can rotate around the spindle, the driving plate can rotate along with the spindle, and a sucking plate capable of axially moving is disposed between the driving plate and the driven plate and is connected with the driving plate by an elastic sheet.

Description

Electromagnetic fan clutch

Technical field

The present invention relates to a kind of electromagnetic fan clutch for automobile engine heat radiation.

Background technique

In prior art, include silicone oil formula, electromagnetic type etc. for the fan clutch of automobile engine heat radiation, silicon oil filled fan clutch is temperature control, and namely stepless time adjustment has the feature fuel-efficient, fan noise is low, but its shortcoming is fragile, easily inefficacy; Magnetic clutch is automatically controlled, conventionally can be divided into many grades of speed governing, fuel-efficient compared with conventional fan, and more reliable and more stable than silicon oil filled fan clutch, is therefore more and more applied on automobile engine heat radiation.

In prior art, the power of electromagnetic type fan clutch is to be all delivered to successively from back to front in the free-ended fan fixed disk of front end to drive fan to rotate, volume on axial direction is larger, center of gravity is away from the fixed position of rear end, fan clutch is stable not in operation process, larger to the wearing and tearing of each counterpart.

In addition, in prior art, the radiation fan of electromagnetic type fan clutch is arranged on magnetic clutch front end, and the radiation fan of silicone oil formula fan clutch is positioned at the position of clutch by rear end, if want, silicon oil filled fan clutch is replaced to electromagnetic fan clutch, be subject to the narrow limitation of mounting point and distance, need to change the positional structure of motor, this uses and brings very big inconvenience to user, is unfavorable for realizing the seamless switching of electromagnetic fan clutch and silicon oil filled fan clutch.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of compact structure operation electromagnetic fan clutch more stably.

Electromagnetic fan clutch of the present invention, comprise rotary main shaft, along main shaft axially from support end to the driving disc that is embedded the electromagnetic core of coil, the driven disc that can rotate around the spindle in free end is set with successively and can rotates with main shaft, between described driving disc and driven disc, be provided with axially displaceable adhesive dish, described adhesive dish is connected by spring sheet with driving disc.

Electromagnetic fan clutch of the present invention, the excircle end face of wherein said driven disc is provided with the first extension part to electromagnetic core direction vertically, and described the first extension part is radially positioned at the outside of electromagnetic core.

Electromagnetic fan clutch of the present invention, wherein said the first extension part, near hanging down and be provided with the first skirt section on free-ended outer wall, is connected with fan on described the first skirt section.

Electromagnetic fan clutch of the present invention, is wherein also provided with dust cover, and described dust cover is sleeved on main shaft, is positioned at described electromagnetic core one end away from driven disc.

Electromagnetic fan clutch of the present invention, is wherein also provided with anti-rotation fixed block, and the outlet of coil on electromagnetic core is fixed in described anti-rotation fixed block one end, and the other end of anti-rotation fixed block connects extension piece and is fixed on motor or water pump.

Electromagnetic fan clutch of the present invention, wherein also comprise a heat dissipation plate, described heat dissipation plate is fixed on driving disc, the excircle end face of described heat dissipation plate is provided with the second extension part to driven disc direction vertically, described the second extension part is radially positioned at the outside of driven disc the first extension part, hang down and be provided with the second skirt section in the end of the second extension part, the second skirt section and described the first skirt section are opposite, first, the magnet fixed disc that is embedded with magnet is set between the second skirt section, described magnet fixed disc is fixed on the first skirt section, on described the second skirt section, the position relative with magnet is provided with soft iron.

Electromagnetic fan clutch of the present invention, wherein also be provided with an adjustment bolt, described heat dissipation plate is provided with the tapped through hole matching with the screw rod of adjusting bolt, described screw rod is against on adhesive dish through the tapped through hole of heat dissipation plate, and the nut matching with described adjustment bolt is resisted against on the exterior edge face of heat dissipation plate.

Electromagnetic fan clutch difference from prior art of the present invention is that electromagnetic fan clutch of the present invention is by arranging the locations of structures of driving disc, adhesive dish and driven disc, structure is compacter, power is from being positioned at the free-ended driving disc of front end to being positioned at the driven disc transmission of rear end near support end, done work by the external transferring power of driven disc near support end, after center of gravity, move, make clutch more steady in operation process, reduce the wearing and tearing to each counterpart.

In electromagnetic fan clutch of the present invention, the first extension part to electromagnetic core direction is set on driven disc, electromagnetic core is coated on wherein, overall structure is compacter, and center of gravity is moved after can be further; Fan is fixed on the first skirt section, position of fan is positioned at after clutch near support end, so, the electromagnetic clutch structure forming can reach and silicone oil formula fan clutch object without change engine location structure in the time replacing, realize seamless switching, and the front and back of position of fan regulate the size that the first extension part can be set according to actual needs to adjust; Dust cover is set, matches with electromagnetic core, in bearing is coated on, prevent that sneaking into of dust foreign material from affecting normal operation and the working life of bearing; Anti-rotation fixed block is set, electromagnetic core is indirectly fixed on motor or water pump, prevent that it from rotating with main shaft, cause electric wire and the miscellaneous part interference of coil; The further affixed heat dissipation plate that arranges on driving disc, and on driven disc affixed magnet fixed disc, utilize magnet to produce the active force of foucault current to soft iron in heat dissipation plate, drive fan differential low speed rotation, increase speed governing shelves, adapt to different radiating requirements; Adjustment bolt is set on heat dissipation plate, adjusts adhesive gap between adhesive dish and driven disc, and in the time of clutch pull-in failure, can adhesive dish be locked on driven disc by being screwed into screw rod, to guarantee that fan still can turn round.

Below in conjunction with accompanying drawing, electromagnetic fan clutch of the present invention is described further.

Accompanying drawing explanation

Fig. 1 is the main sectional view of electromagnetic fan clutch one speed of the present invention;

Fig. 2 is the main sectional view of electromagnetic fan clutch two speed of the present invention.

Embodiment

As shown in Figure 1, electromagnetic fan clutch of the present invention comprises rotary main shaft 1, along main shaft 1 axially from support end to the driving disc 13 that is embedded the electromagnetic core 3 of coil 5, the driven disc 6 that can rotate around main shaft 1 and can rotates with main shaft 1 in free end is set with successively, between driving disc 13 and driven disc 6, be provided with axially displaceable adhesive dish 10, adhesive dish 10 is connected by spring sheet with driving disc 13.

Driven disc 6 excircle end faces are provided with the first extension part 14 to electromagnetic core 3 directions vertically, the first extension part 14 is radially positioned at the outside of electromagnetic core 3, the first extension part 14 is provided with the first skirt section 11 near free-ended outer wall, the first skirt section 11 is perpendicular to the outer wall of the first extension part 14, affixed fan 19 on the first skirt section 11.

Further, away from one end of driven disc 6, dust cover 2 is set at electromagnetic core 3, dust cover 2 is sleeved on main shaft 1 and matches bearing is coated on wherein with electromagnetic core 3 end faces.

Anti-rotation fixed block 4 is further set, and the outlet of coil 5 on electromagnetic core is fixed in anti-rotation fixed block 4 one end, and the other end connects extension piece and is fixed on motor or water pump.

When work, under the lower state of water temperature, coil 5 no electric circuits, electromagnetic core 3 does not produce magnetic field, and adhesive dish 10 is with driven disc 6 in separated state, and driving disc 13 rotates with main shaft 1 but power can not be passed on driven disc 6, and fan 19 is in halted state.

In the time that water temperature rises to setting value, coil 5 is switched on, electromagnetic core 3 produces magnetic field, magnetic force conducts by driven disc 6, attract adhesive dish 10 to pull spring sheet to move and driven disc 6 combinations to driven disc 6 vertically, the transmission of power of main shaft 1, to driven disc 6, drives the fan 19 on driven disc 6 to rotate at full speed, enters working state.

After water temperature reduces, lower than setting value, coil 5 power-off, the magnetic field that electromagnetic core 3 produces disappears, and adhesive dish 10 is pulled with driven disc 6 and is separated under the effect of spring sheet, and the transmission of power of driving disc 13 is less than on driven disc 6, and fan 19 is in halted state.

Electromagnetic fan clutch of the present invention can be further arranged to two speed, as shown in Figure 2, sets up a heat dissipation plate 9, and heat dissipation plate 9 is fixed on driving disc 13 with its rotation.

The excircle end face of heat dissipation plate 9 is provided with the second extension part 16 to driven disc 6 directions vertically, the second extension part 16 is radially positioned at the outside of driven disc the first extension part 14, hang down and be provided with the second skirt section 12 in the end of the second extension part 16, the second skirt section 12 and the first skirt section 11 are opposite, between the first skirt section 11 and the second skirt section 12, magnet fixed disc 7 is set, on the end face of magnet fixed disc 7, be embedded with magnet 8, magnet fixed disc 7 is fixed on the first skirt section 11, the second position relative with magnet 8 on skirt section 12 is provided with soft iron 17, and soft iron 17 and magnet 8 keep certain gap.

Further, one adjustment bolt 15 is set, heat dissipation plate 9 is provided with the tapped through hole matching with the screw rod of adjusting bolt 15, and screw rod is against on adhesive dish 10 through the tapped through hole of heat dissipation plate 9, and the nut 18 matching with adjustment bolt 15 is resisted against on the exterior edge face of heat dissipation plate 9.

When work, under the lower state of water temperature, coil 5 no electric circuits, electromagnetic core 3 does not produce magnetic field, adhesive dish 10 and driven disc 6 are in separated state, main shaft 1 drives driving disc 13 to rotate together with heat dissipation plate 9, soft iron 17 on heat dissipation plate 9 produces relative rotation with magnet 8, cutting magnetic line produces foucault current, under the effect of foucault current, produce again new magnetic field, under the effect in this new magnetic field, between fixed magnet fixed tray 7 and heat dissipation plate 9, form and flexibly connect, make magnet fixed disc 7 follow heat dissipation plate 13 differential low speed rotation, and then drive driven disc 6 differential low-speed runnings, drive fan 19 to slowly run.

In the time that water temperature rises to setting value, coil 5 is switched on, electromagnetic core 3 produces magnetic field, magnetic force conducts by driven disc 6, attract adhesive dish 10 to pull spring sheet to move and driven disc 6 combinations to driven disc 6 vertically, the transmission of power of main shaft 1, to driven disc 6, drives the fan 19 on driven disc 6 to rotate at full speed; Flexibly connecting between magnet fixed disc 7 and heat dissipation plate 9 provides supplementary power for the driven disc 6 of full-speed operation.

After water temperature reduces, lower than setting value, coil 5 power-off, the magnetic field that electromagnetic core 3 produces disappears, adhesive dish 10 is pulled with driven disc 6 and is separated under the effect of spring sheet, main shaft 1 drives driving disc 13 and heat dissipation plate 9 to continue rotation, drives driven disc 6 differential low-speed runnings by flexibly connecting between magnet fixed disc 7 and heat dissipation plate 9, drives fan 19 to slowly run.

In the time of electromagnetic core coil failure, unclamp nut 18, the screw rod of adjusting bolt 15 is inwardly further screwed into promotion adhesive dish 10 and is pushed against on driven disc 6, fastening nut 18, realizes transmission of power again.

Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technological scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.

Claims

1. an electromagnetic fan clutch, comprise rotary main shaft (1), along main shaft (1) axially from support end to the electromagnetic core (3) that is embedded coil (5) in free end is set with successively, can be around the driven disc (6) of main shaft (1) rotation and the driving disc (13) that can rotate with main shaft (1), between described driving disc (13) and driven disc (6), be provided with axially displaceable adhesive dish (10), described adhesive dish (10) is connected by spring sheet with driving disc (13), the excircle end face of described driven disc (6) is provided with vertically to first extension part (14) of electromagnetic core (3) direction, described the first extension part (14) is radially positioned at the outside of electromagnetic core (3), the first extension part (14) is near hanging down and be provided with the first skirt section (11) on free-ended outer wall, on described the first skirt section (11), be connected with fan (19), also comprise a heat dissipation plate (9), described heat dissipation plate (9) is fixed on driving disc (13), the excircle end face of described heat dissipation plate (9) is provided with vertically to second extension part (16) of driven disc (6) direction, described the second extension part (16) is radially positioned at the outside of driven disc the first extension part (14), hang down and be provided with the second skirt section (12) in the end of the second extension part (16), the second skirt section (12) is opposite with described the first skirt section (11), first, the second skirt section (11, 12) magnet fixed disc (7) that is embedded with magnet (8) is set between, described magnet fixed disc (7) is fixed on the first skirt section (11), the upper position relative with magnet (8), described the second skirt section (12) is provided with soft iron (17).

2. electromagnetic fan clutch according to claim 1, is characterized in that: be also provided with dust cover (2), it is upper that described dust cover (2) is sleeved on main shaft (1), is positioned at described electromagnetic core (3) one end away from driven disc (6).

3. electromagnetic fan clutch according to claim 1, it is characterized in that: be also provided with anti-rotation fixed block (4), the outlet of coil on electromagnetic core (5) is fixed in described anti-rotation fixed block (4) one end, and the other end of anti-rotation fixed block (4) connects extension piece and is fixed on motor or water pump.

4. electromagnetic fan clutch according to claim 1, it is characterized in that: be also provided with an adjustment bolt (15), described heat dissipation plate (9) is provided with the tapped through hole matching with the screw rod of adjusting bolt (15), it is upper that described screw rod is against adhesive dish (10) through the tapped through hole of heat dissipation plate (9), and the nut (18) matching with described adjustment bolt (15) is resisted against on the exterior edge face of heat dissipation plate (9).