CN209959755U

CN209959755U - Double-spring-piece attracting mechanism suitable for electromagnetic fan clutch

Info

Publication number: CN209959755U
Application number: CN201920582228.4U
Authority: CN
Inventors: 黄政爱; 杨海波
Original assignee: KUNSHAN LONGZHONG MAXGREEN AUTOMOBILE COMPONENTS CO Ltd
Current assignee: KUNSHAN LONGZHONG MAXGREEN AUTOMOBILE COMPONENTS CO Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-17
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a double-spring-piece suction mechanism suitable for an electromagnetic fan clutch, which comprises a bearing seat and a metal friction disc, wherein the bearing seat and the metal friction disc are oppositely arranged in a center hole, and are connected through a double-spring-piece assembly, the assembly comprises a plurality of first strip-shaped spring pieces and second strip-shaped spring pieces, the first strip-shaped spring pieces and the second strip-shaped spring pieces are the same in quantity, the first strip-shaped spring pieces are arranged in a central symmetry manner about the center hole of the metal friction disc in a plane, one end of each first strip-shaped spring piece is fixed on the metal friction disc through a first fixing piece, and; the second strip-shaped spring piece is clamped between the corresponding first strip-shaped spring piece and the metal friction disc, and the second strip-shaped spring piece, the other end of the corresponding first strip-shaped spring piece and the damping pad are uniformly fixed on the bearing block in a penetrating mode through a second fixing piece. The mechanism is used for replacing the existing plane spring suction mechanism, and has the characteristics of easy suction, longer suction limit clearance, low noise and reliable return of the metal friction disc.

Description

Double-spring-piece attracting mechanism suitable for electromagnetic fan clutch

Technical Field

The utility model relates to a double spring piece actuation mechanism suitable for electromagnetic fan clutch.

Background

The time that the automobile needs the fan to work in the driving process is about 1/3, and the cooling fan will consume ~ 8% of the rated power of the engine, can reduce the oil consumption by 4% ~ 5% after using the electromagnetic fan clutch.

In the present stage, the electromagnetic fan clutch uses a flat spring 13 as shown in fig. 1 to achieve the functions of transmitting torque, rotating speed and returning after operation. The planar spring 13 is a single annular spring piece with connecting holes arranged on the periphery, is usually installed between the metal friction disc and the bearing seat, and is fixed with the metal friction disc and the bearing seat respectively by bolts, so that the planar spring 13, the bearing seat and the metal friction disc jointly form a planar spring suction mechanism. In the existing electromagnetic clutch, a metal friction disc is arranged opposite to a driving belt pulley provided with an electromagnetic coil, a fan connecting disc is fixed on a bearing seat, and the fan connecting disc is connected with a fan. When the electromagnetic coil is in actual work, the electromagnetic coil is electrified to generate electromagnetic suction force, so that the metal friction disc overcomes the tension of the plane spring 13 and is adsorbed on the driving belt pulley, the bearing seat and the fan are further driven to rotate at high speed, and after the electromagnetic coil is electrified, the metal friction disc is separated from the driving belt pulley under the tension of the plane spring 13.

Although the existing plane spring suction mechanism has a simple structure, the following disadvantages are exposed in the use process:

1. the required suction force is large, so that a plurality of copper wires are used for the electromagnetic coil, the cost is high, and the appearance size of the whole electromagnetic fan clutch is large.

2. The limit suction clearance is too small, the initial clearance is about 0.6mm, the limit suction clearance after the metal friction disc is abraded is only about 1.2mm, and the metal friction disc is easy to scrap when the limit suction clearance is larger, so that the whole service life of the electromagnetic fan clutch is not long.

3. A single spring piece is adopted to bear torque and also bear a reset function, and the phenomenon of no-return clamping is often caused due to the fact that the spring piece is easy to reset due to unidirectional deformation and the return capability is weak after work.

4. The spring piece can vibrate when returning to produce big noise.

Disclosure of Invention

The utility model discloses the purpose is: the double-spring-piece suction mechanism is used for replacing the existing plane spring suction mechanism, and has the characteristics of easier suction, longer suction limit gap, lower generated noise and more reliable return of the metal friction disc.

The technical scheme of the utility model is that: a double-spring-piece attracting mechanism suitable for an electromagnetic fan clutch comprises a bearing seat and a metal friction disc, wherein center holes of the bearing seat and the metal friction disc are oppositely arranged; the second strip-shaped spring piece is clamped between the corresponding first strip-shaped spring piece and the metal friction disc, and the second strip-shaped spring piece, the other end of the corresponding first strip-shaped spring piece and the damping pad are uniformly fixed on the bearing block in a penetrating mode through a second fixing piece.

Further, in the utility model discloses in the quantity of first bar spring leaf is more than three, and splices into regular polygon in proper order.

Further, the utility model discloses in the one end that links to each other with the metal friction disk on the first bar spring leaf adopts simultaneously first mounting is worn to establish and is fixed with the rubber gasket, and the rubber gasket is pressed from both sides and is established between metal friction disk and the first bar spring leaf.

Furthermore, in the present invention, the length of the second strip-shaped spring piece is shorter than that of the first strip-shaped spring piece.

Furthermore, in the present invention, the length of the second strip-shaped spring piece is half of the length of the first strip-shaped spring piece.

Further, in the utility model discloses in first mounting is fastening screw and flange face nut's combination, and it has the locating hole that supplies fastening screw to pass with flange face nut complex to open on the metal friction disk.

Further, the utility model discloses in the second mounting is hexagon socket head cap screw, is equipped with complex screw hole with it on the bearing frame to be equipped with on the metal friction disk and supply hexagon socket head cap screw to pass with the screw hole complex fluting on the bearing frame.

Further, in the present invention, the first bar-shaped spring piece is a straight bar-shaped spring piece or an arc-shaped bar-shaped spring piece, and the second bar-shaped spring piece is also a straight bar-shaped spring piece or an arc-shaped bar-shaped spring piece.

The utility model discloses mainly install and use on the electromagnetic fan clutch of car, the same with conventional technique, be provided with solenoid's driving pulley in metal friction disk and the clutch and set up relatively, and the bearing frame is then fixed with the fan connection pad in the clutch, connects the fan by the fan connection pad again. The execution principle of the electromagnetic fan clutch is the same as that of the conventional technology, when the water temperature of an automobile engine reaches a set value of a vehicle-mounted computer, an electromagnetic coil in the electromagnetic fan clutch is electrified to generate suction force (overcoming the elasticity of the double spring plate component) to suck the metal friction disc onto the driving belt pulley, so that the metal friction disc and the driving belt pulley rotate synchronously, then torque is transmitted to the bearing seat through the first strip spring in the double spring plate component to drive the fan connecting disc and the fan to rotate synchronously, and finally the function of cooling the water temperature of the engine through the rotation of the fan is achieved.

When the water temperature of the engine is lower than a set value, the electromagnetic coil is powered off, the suction force disappears, the metal friction disc is separated from the driving belt pulley, and the metal friction disc returns under the effect of the resilience force of the double-spring-plate assembly.

The working process of the electromagnetic fan clutch is as follows: the vehicle computer of the automobile continuously switches on and off the power supply according to the temperature (set temperature value) of the engine, thereby controlling the processes of the attraction and the disengagement of the metal friction disc and the driving belt pulley. The double spring assembly has the following functions: transmitting torque, rotating speed and returning of the metal friction disc after working.

The utility model has the advantages that:

the utility model provides a pair of this kind of double spring piece actuation mechanism suitable for electromagnetic fan clutch, it is used for replacing existing plane spring actuation mechanism, has easier actuation, and the limit clearance of actuation is longer, and the noise of production is lower, the more reliable characteristics of metal friction disk return, and life is longer, and manufacturing cost is lower. The specific advantages are detailed as follows:

1. adopt the double spring piece subassembly to replace original plane spring, compare the whole piece spring leaf of original big specification, the specification of two kinds of bar spring leaves is littleer, and distributes evenly, and required actuation will be little, easier actuation to make the solenoid in the electromagnetic fan clutch can do littleer, practice thrift manufacturing cost.

2. The suction limit clearance is longer: the about 1.2mm in actuation limit clearance of plane spring actuation mechanism, and the utility model discloses can reach 2.0mm, mean that the metal friction disk is reliable actuation even if reach behind the original wearing and tearing volume, very big extension electromagnetic fan clutch's life.

3. The noise generated is lower: a shock absorption pad is arranged between the bearing seat and the first strip spring piece, so that the vibration of the first strip spring piece can be stopped, and the generated noise is reduced.

4. The metal friction disc is more reliable in return: the second strip-shaped spring piece arranged in the scheme mainly plays a role in resetting the metal friction disc after power failure. The defect that the reset is difficult due to unidirectional deformation because a single-piece spring piece structure is commonly adopted in the traditional electromagnetic fan clutch product and not only bears torque but also bears the reset function is overcome. And the double spring assemblies are symmetrically arranged, so that more stable and reliable torque transmission is ensured.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a schematic view of a planar spring used in a conventional electromagnetic fan clutch;

FIG. 2 is a schematic perspective view of an embodiment of the present invention;

FIG. 3 is an exploded view of the embodiment of FIG. 2;

FIG. 4 is a schematic view of the mounting of a dual spring plate assembly to a metal friction disc;

FIG. 5 is a schematic view of a first strip spring piece used in another embodiment of the present invention;

fig. 6 is a schematic view of a second strip-shaped spring piece according to another embodiment of the present invention.

Wherein: 1. a bearing seat; 2. a flange face nut; 3. a shock pad; 4. a first bar-shaped spring piece; 5. a second strip-shaped spring piece; 6. a gasket; 7. a metal friction disk; 8. inner hexagon flower type pan head screw; 9. fastening screws; 10. a central bore; 11. screw holes; 12. grooving; 13. a planar spring.

Detailed Description

Example 1 referring to fig. 2 ~ and fig. 4, the following details are provided to describe a specific embodiment of the dual spring plate engaging mechanism for an electromagnetic fan clutch according to the present invention:

the friction bearing comprises a bearing seat 1 and a metal friction disc 7, wherein central holes 10 of the bearing seat 1 and the metal friction disc 7 are oppositely arranged, and as shown in figures 2 and 3, the bearing seat 1 and the metal friction disc 7 are connected through a double spring plate assembly. The double-spring-plate component is the core of the design of the scheme.

In the embodiment, the double-spring-piece assembly is composed of three first strip-shaped spring pieces 4, three second strip-shaped spring pieces 5, three shock absorption pads 3, three gaskets 6, three fastening screws 9, three flange-face nuts 2 and three hexagon socket head cap screws 8.

As shown in fig. 3 and 4, the first strip-shaped spring plate 4 is arranged in a plane in a central symmetry with respect to the central hole 10 of the metal friction disk 7, and is sequentially connected in a regular triangle. One end of each first strip-shaped spring piece 4 is fixed on the metal friction disc 7 through the combination of the fastening screw 9 and the flange nut 2, and the metal friction disc 7 is provided with a positioning hole (not shown) for the fastening screw 9 to pass through and match with the flange nut 2. And a damping pad 3 is clamped between the other end of the first strip spring piece 4 and the bearing seat 1. The second strip-shaped spring piece 5 is clamped between the corresponding first strip-shaped spring piece 4 and the metal friction disc 7, and the second strip-shaped spring piece 5, the other end of the corresponding first strip-shaped spring piece 4 and the damping pad 3 are uniformly fixed on the bearing block 1 in a penetrating mode through hexagon socket head cap screws 8. Specifically, as shown in fig. 3, the bearing seat 1 is provided with a screw hole 11 matching with the bearing seat, and the metal friction disc 7 is provided with a slot 12 for the hexagon socket head cap screw 8 to pass through and match with the screw hole 11 on the bearing seat 1.

As shown in fig. 3, in the present embodiment, a spacer 6 is fixedly inserted into one end of the first strip spring piece 4 connected to the metal friction disk 7 by using the fastening screw 9, and the spacer 6 is interposed between the metal friction disk 7 and the first strip spring piece 4.

In this embodiment, the first strip-shaped spring piece 4 and the second strip-shaped spring piece 5 are both straight strip-shaped spring pieces, and the length of the second strip-shaped spring piece 5 is shorter than that of the first strip-shaped spring piece 4 and is half of that of the first strip-shaped spring piece 4.

The utility model discloses mainly install and use on the electromagnetic fan clutch of car, the same with conventional technique, be provided with solenoid's drive pulley in metal friction disk 7 and the clutch and set up relatively, and bearing frame 1 then is fixed with the fan connection pad in the clutch, connects the fan by the fan connection pad again. The execution principle of the electromagnetic fan clutch is the same as that of the conventional technology, when the water temperature of an automobile engine reaches a set value of a vehicle-mounted computer, an electromagnetic coil in the electromagnetic fan clutch is electrified to generate suction force (overcoming the elasticity of the double spring piece component) to suck the metal friction disc 7 onto the driving belt pulley, so that the metal friction disc 7 and the driving belt pulley rotate synchronously, then torque is transmitted to the bearing seat 1 through the first strip spring piece 4 in the double spring piece component to drive the fan connecting disc and the fan to rotate synchronously, and finally the function of cooling the water temperature of the engine through the rotation of the fan is achieved.

When the water temperature of the engine is lower than a set value, the electromagnetic coil is powered off, the suction force disappears, the metal friction disc 7 is separated from the driving belt pulley, and the metal friction disc 7 returns under the effect of the resilience force of the double-spring-piece assembly.

The working process of the electromagnetic fan clutch is as follows: the vehicle computer of the automobile continuously switches on and off the power supply according to the temperature (set temperature value) of the engine, thereby controlling the processes of the attraction and the disengagement of the metal friction disk 7 and the driving belt pulley. The double spring assembly has the following functions: transmitting torque, rotating speed and returning of the metal friction disc after working.

Example 2: the entire mounting structure of embodiment 2 can be seen from embodiment 1, and differs from embodiment 1 in that the first strip-shaped spring piece 4 and the second strip-shaped spring piece 5 take the form of arc-shaped strip spring pieces as shown in fig. 5 and 6, respectively. And as can be seen from the figure, two positioning holes are formed at one end of the first strip-shaped spring piece 4, which is connected with the second strip-shaped spring piece 5, and are used for penetrating two hexagon socket head screws 8 with smaller specifications to be fixed with the bearing seat 1.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A double-spring-plate suction mechanism suitable for an electromagnetic fan clutch comprises a bearing seat (1) and a metal friction disc (7), wherein center holes (10) of the bearing seat (1) and the metal friction disc (7) are arranged oppositely, and the double-spring-plate suction mechanism is characterized in that the bearing seat (1) and the metal friction disc (7) are connected through a double-spring-plate assembly, the double-spring-plate assembly comprises a plurality of first strip-shaped spring plates (4) and second strip-shaped spring plates (5) which are the same in number, the first strip-shaped spring plates (4) are arranged in a plane in a central symmetry mode relative to the center holes (10) of the metal friction disc (7), one end of each first strip-shaped spring plate (4) is fixed to the metal friction disc (7) through a first fixing piece, and a shock; the second strip-shaped spring piece (5) is clamped between the corresponding first strip-shaped spring piece (4) and the metal friction disc (7), and the second strip-shaped spring piece (5) and the other end of the corresponding first strip-shaped spring piece (4) and the damping pad (3) are uniformly fixed on the bearing block (1) in a penetrating mode through a second fixing piece.

2. The double-spring-piece attracting mechanism applicable to the electromagnetic fan clutch according to claim 1, characterized in that the number of the first strip-shaped spring pieces (4) is more than three, and the first strip-shaped spring pieces are sequentially spliced into a regular polygon.

3. The double-spring-piece engaging mechanism applicable to the electromagnetic fan clutch according to claim 1, wherein the first strip-shaped spring piece (4) has one end connected to the metal friction disc (7) and a gasket (6) is fixed to the first fixing piece in a penetrating manner, and the gasket (6) is sandwiched between the metal friction disc (7) and the first strip-shaped spring piece (4).

4. The double spring plate engaging mechanism for electromagnetic fan clutch according to claim 1, wherein the second strip spring plate (5) is shorter in length than the first strip spring plate (4).

5. The double spring plate engaging mechanism for electromagnetic fan clutch as claimed in claim 4, wherein the length of the second strip spring plate (5) is half of the length of the first strip spring plate (4).

6. The double-spring-plate attracting mechanism applicable to the electromagnetic fan clutch according to claim 1, wherein the first fixing member is a combination of a fastening screw (9) and a flange nut (2), and the metal friction disc (7) is provided with a positioning hole for the fastening screw (9) to pass through and match with the flange nut (2).

7. The double-spring-plate engaging mechanism for electromagnetic fan clutch according to claim 1, wherein the second fixing member is an inner hexagonal flower-shaped pan head screw (8), the bearing seat (1) is provided with a screw hole (11) matching therewith, and the metal friction disk (7) is provided with a slot (12) for the inner hexagonal flower-shaped pan head screw (8) to pass through and match with the screw hole (11) on the bearing seat (1).

8. The double-spring-piece engaging mechanism for electromagnetic fan clutch according to claim 1, wherein the first strip-shaped spring piece (4) is a straight strip-shaped spring piece or an arc strip-shaped spring piece, and the second strip-shaped spring piece (5) is also a straight strip-shaped spring piece or an arc strip-shaped spring piece.