Friction-plate-free automobile air conditioner clutch belt pulley

Abstract

The utility model discloses a friction-plate-free automobile air conditioner clutch belt pulley, which belongs to the field of clutches and comprises a belt pulley body, and a plating layer for increasing friction force is arranged on an attraction surface of the belt pulley body. Compared with the prior art, the belt pulley has the advantages that the pull-in face of the belt pulley body and the belt pulley body are arranged to be of a separated structure, the buffer clamping block is installed on the bottom face of the pull-in face of the belt pulley body, the buffer spring is arranged in the belt pulley body, and therefore when the pull-in face of the belt pulley body is closed, the pull-in face of the belt pulley body is closed. Buffering can be conducted through the buffering springs, so that the suction time of the driving disc and the plating layer is prolonged, and the abrasion degree of the driving disc at the moment of contact with the plating layer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of clutches, specifically to a frictionless automotive air conditioning clutch pulley. Background Technology

[0002] The automotive air conditioning electromagnetic clutch is a power transmission device between the car engine and the car air conditioning compressor. The car air conditioning compressor is driven by the car engine through the electromagnetic clutch. Currently, most electromagnetic clutches consist of a pulley, a coil, and a drive plate. To increase the stability of the static torque of the pulley, researchers have continuously improved and invented a frictionless automotive air conditioning clutch pulley.

[0003] The principle of a frictionless automotive air conditioning clutch pulley is to apply several layers of plating to the contact surface of the pulley body. The properties of the plating increase the friction of the contact surface of the pulley, thereby obtaining higher static torque.

[0004] The coating is mostly applied directly to the absorber surface of the pulley using equipment, making it a single structure. Therefore, the connection between the pulley and the drive disc is rigid, and there is no corresponding buffer during the connection process. This results in a large amount of mutual friction when the drive disc and the coating are connected, which affects the life of the drive disc. Utility Model Content

[0005] The technical problem this invention aims to solve is that, in the case of existing frictionless automotive air conditioning clutch pulleys, the drive disc experiences increased wear due to greater friction during closed engagement.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a frictionless automotive air conditioning clutch pulley, including a pulley body, wherein the contact surface of the pulley body is provided with a coating to increase friction, the contact surface of the pulley body and the pulley body are separate structures, and the bottom surface of the contact surface is provided with a plurality of buffer blocks passing through the pulley body bracket, and buffer springs are provided on both sides of the buffer blocks to relieve the impact force of the coating and the clutch connection.

[0007] As an improvement, the suction surface of the pulley body is a T-shaped hollow structure, and the pulley body is a mountain-shaped hollow structure. The thin cylindrical surface of the suction surface of the pulley body is connected to the central through hole of the pulley body through several rotary bearings. The top of the thin cylindrical surface of the suction surface of the pulley body is provided with an anti-centrifugal baffle connected by a bolt structure.

[0008] As an improvement, the coating includes a nano-ceramic silane protective layer, a cathodic electrophoretic paint layer, a polytetrafluoroethylene protective layer, and a metal transition layer, which are sequentially coated.

[0009] As an improvement, the outer wall end of the pulley body is provided with several belt grooves.

[0010] As an improvement, the buffer spring is a non-magnetic spring.

[0011] As an improvement, the pulley body is provided with a coil fixing groove inside that corresponds to the electromagnet coil.

[0012] The advantages of this invention compared with the prior art are as follows: This device sets the contact surface of the pulley body and the pulley body as a separate structure, installs a buffer block on the bottom surface of the contact surface of the pulley body, and sets a buffer spring inside the pulley body, so that when the contact surface of the pulley body is closed, it will be buffered by the buffer spring, thereby increasing the contact time between the drive disc and the coating, thereby reducing the wear of the drive disc at the moment of contact with the coating. Attached Figure Description

[0013] Figure 1 This is a general structural diagram of a frictionless automotive air conditioning clutch pulley according to this utility model.

[0014] Figure 2 This is a cross-sectional view of the overall structure of a frictionless automotive air conditioning clutch pulley according to this utility model.

[0015] Figure 3 This is an exploded view of the overall structure of a frictionless automotive air conditioning clutch pulley according to this utility model.

[0016] Figure 4 This is a structural diagram of a frictionless automotive air conditioning clutch pulley buffer block according to the present invention.

[0017] As shown in the figure: 1. Pulley body; 11. Buffer block; 12. Buffer spring; 13. Rotary bearing; 14. Anti-centrifugal baffle; 15. Belt groove; 16. Coil fixing groove; 2. Coating; 21. Nano-ceramic silane protective layer; 22. Cathodic electrophoretic paint layer; 23. Polytetrafluoroethylene protective layer; 24. Metal transition layer. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] As per the instruction manual Figure 1 , 2As shown in Figure 3, the device includes a pulley body 1, which has a hollow, mountain-shaped structure. The outer wall of the pulley body 1 is provided with several belt slots 15, and the interior of the pulley body 1 is provided with a coil fixing slot 16 corresponding to the electromagnet coil. When the device is connected by a belt, the other end of the belt is fixed in the belt slots 15 on the outer wall of the pulley body 1, and the tension of the belt is adjusted to ensure the stability of the power transmission. The electromagnet coil is fixed in the mountain-shaped coil fixing slot 16 of the pulley body 1 and is fixed with glue.

[0020] The engagement surface of the pulley body 1 is separate from the pulley body 1. The bottom surface of the engagement surface has several buffer blocks 11 that pass through the pulley body 1 support. Buffer springs 12 on both sides of the buffer blocks 11 are provided to alleviate the impact force between the plating 2 and the clutch connection. The engagement surface of the pulley body 1 has a T-shaped hollow structure. The thin cylindrical surface of the engagement surface of the pulley body 1 is connected to the central through hole of the pulley body 1 through several rotary bearings 13. The top of the thin cylindrical surface of the engagement surface of the pulley body 1 is provided with an anti-centrifugal baffle 14 connected by a bolt structure. Multiple rotary bearings 13 are sequentially fitted onto the hollow thin cylindrical end of the engagement surface of the pulley body 1. Two buffer springs 12 are placed on both sides of the arc-shaped groove on the bottom surface of the pulley body 1 (the buffer springs 12 are non-magnetic springs, which can ensure that the buffer springs 12 themselves will not be magnetized by the electromagnet). The buffer block 11 is placed in the arc-shaped groove, and the buffer block 11 is located in the middle of the two buffer springs 12. At this time, the hollow thin column end of the pulley body 1's contact surface passes through the hollow shaft of the pulley body 1. The anti-centrifugal baffle 14 is placed on the top of the hollow thin column end of the pulley body 1's contact surface and fixed with screws. Note that the hollow thin column of the pulley body 1's contact surface, the center through hole of the anti-centrifugal baffle 14, and the hollow through hole of the pulley body 1 are all on the same center line.

[0021] As per the instruction manual Figure 2 , 3 As shown in Figure 4, the pulley body 1 has a coating 2 on its suction surface to increase friction. The coating 2 includes a nano-ceramic silane protective layer 21, a cathodic electrophoretic paint layer 22, a polytetrafluoroethylene protective layer 23, and a metal transition layer 24, which are sequentially coated. The nano-ceramic silane protective layer 21 is used to improve the scratch resistance of the coating and protect the cathodic electrophoretic paint layer 22. The cathodic electrophoretic paint layer 22 is used to improve the static torque between the pulley and the suction cup. The polytetrafluoroethylene protective layer 23 protects the metal transition layer 24 and improves the acid and alkali resistance of the coating 2 itself. The metal transition layer 24 provides the interface between the metal surface of the pulley and the coating.

[0022] In a specific implementation of this invention, when the electromagnet is energized, the drive disk will attract the metal transition layer 24 to the drive disk under the action of magnetic force for connection. When the plating layer 2 is connected to the drive disk, the buffer block 11 will rotate in the same direction under the action of friction. At this time, the buffer block 11 will press the buffer spring 12 on this side, thereby reducing the pressure on the plating layer 2 when the pulley body 1 starts as a whole, thereby reducing the instantaneous friction when the plating layer 2 is connected to the drive disk, thereby reducing the wear of the drive disk and the plating layer 2.

[0023] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A frictionless automotive air conditioning clutch pulley, comprising a pulley body (1), wherein the engagement surface of the pulley body (1) is provided with a coating (2) to increase friction, characterized in that: The engagement surface of the pulley body (1) is separate from the pulley body (1), and the bottom surface of the engagement surface is provided with several buffer blocks (11) that pass through the pulley body (1) bracket. The buffer blocks (11) are provided with buffer springs (12) on both sides to relieve the impact force between the plating layer (2) and the clutch.

2. The frictionless automotive air conditioning clutch pulley according to claim 1, characterized in that: The pulley body (1) has a T-shaped hollow structure for its suction surface and a mountain-shaped hollow structure for its pulley body (1). The thin cylindrical surface of the pulley body (1) is connected to the central through hole of the pulley body (1) through several rotary bearings (13). The top of the thin cylindrical surface of the pulley body (1) is provided with an anti-centrifugal baffle (14) connected by a bolt structure.

3. The frictionless automotive air conditioning clutch pulley according to claim 1, characterized in that: The coating (2) includes a nano-ceramic silane protective layer (21), a cathodic electrophoretic paint layer (22), a polytetrafluoroethylene protective layer (23), and a metal transition layer (24) sequentially coated.

4. The frictionless automotive air conditioning clutch pulley according to claim 1, characterized in that: The outer wall end of the pulley body (1) is provided with several belt grooves (15).

5. The frictionless automotive air conditioning clutch pulley according to claim 1, characterized in that: The buffer spring (12) is a non-magnetic spring.

6. The frictionless automotive air conditioning clutch pulley according to claim 2, characterized in that: The pulley body (1) has a coil fixing groove (16) inside that corresponds to the electromagnet coil.

Images