High-performance permanent magnet bistable electromagnetic clutch

Abstract

The utility model discloses a high-performance permanent magnet bistable electromagnetic clutch, which belongs to the field of clutches and comprises a driving end face wheel and a driven end face wheel which are meshed with each other, and a shaft rod end of the driving end face wheel and a shaft rod end of the driven end face wheel are provided with a driving shell and a driven shell which are hermetically connected through a bolt structure. Compared with the prior art, the device has the advantages that the clutch state fixing assembly for limiting the opening and closing states of the clutch is designed to be of a pure physical structure, and the magnetic clamping block is pulled to move horizontally along the plane end of the sliding groove of the L-shaped limiting rod through magnetic force generated by the electromagnet; therefore, the limiting rod at the outer wall end of the movable armature can conduct positioning sliding along the vertical end of the L-shaped limiting rod sliding groove, when the electromagnet loses power, the magnetic clamping block continues to abut against the limiting rod under the action of the non-magnetic spring, and therefore the state of the clutch is fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the clutch field, concretely points to a kind of high-performance permanent-magnetic bistable electromagnetic clutch. BACKGROUND

[0002] In recent years, environmental and energy problems become increasingly prominent, electric vehicles have become the transportation tool of priority development of various countries, and wheel hub motor becomes the preferred drive mode of electric vehicle due to simple structure, flexible control and other advantages, in order to reduce electromagnetic impact and mechanical impact generated by clutch when starting and braking of automobile, the type of clutch will usually select high-performance permanent-magnetic bistable electromagnetic clutch.

[0003] The connection structure of existing high-performance permanent-magnetic bistable electromagnetic clutch is usually tooth-embedded structure, and the opening and closing of clutch are completed by meshing connection of driving end face wheel and driven end face wheel, and the opening and closing of permanent-magnetic bistable electromagnetic clutch is triggered by electromagnet located in driving shell, and the movable armature in driven shell is attracted or repelled by magnetic pole change of electromagnet, in order to increase suction, permanent magnet ring composed of multiple magnet pieces is usually installed on the bottom surface of movable armature.

[0004] In order to ensure the stability of driven end face wheel in closing or separating state, fixed mechanism is usually arranged on the outer wall of movable armature, and these mechanisms are usually driven by motor driven by circuit, and the driving part for fixing the position of movable armature is clamped by motor drive, so as to ensure the fixation of driven end face wheel after closing or separating, and the circuit for fixing the state of motor driving part is started or disconnected synchronously with electromagnet. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that the opening and closing state of existing high-performance permanent-magnetic bistable electromagnetic clutch depends on the on-off of circuit, and once the circuit for controlling the opening and closing state fails, the opening and closing circuit cannot normally trigger when electromagnet is started, and the clutch will malfunction.

[0006] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a kind of high-performance permanent-magnetic bistable electromagnetic clutch, including driving end face wheel and driven end face wheel meshing with each other, and the shaft rod end of driving end face wheel and the shaft rod end of driven end face wheel are provided with driving shell and driven shell connected by bolt structure sealing, the inside of driving shell is provided with electromagnet passing through the inner wall of driving shell, the inside of driven shell is provided with movable armature sleeved on the shaft rod of driven end face wheel, and the bottom end of movable armature is provided with permanent magnet ring corresponding to electromagnet,

[0007] The side surface of the movable armature is provided with a clutch state fixing assembly, the clutch state fixing assembly comprises a limiting rod welded on the outer wall end of the movable armature, an L-shaped limiting rod sliding groove located in the interior of the driving shell and a magnetic clamping block located on the plane end of the L-shaped limiting rod sliding groove, and a non-magnetic force spring for automatic resetting of the magnetic clamping block is arranged between the magnetic clamping block and the electromagnet.

[0008] As an improvement, the shaft rod of the driven end face wheel is connected with the center through hole of the driven shell through a sliding washer, the shaft rod of the driving end face wheel is connected with the driving shell and the movable armature through a rotating bearing, and the shaft rod of the driven end face wheel is connected with the driving shell through a rotating bearing.

[0009] As an improvement, the rod surface of the limiting rod is provided with a closed clamping groove and a disconnection clamping groove matched with the magnetic clamping block, and a sealing plate for sealing the magnetic clamping block and the non-magnetic force spring is welded above the plane end of the L-shaped limiting rod sliding groove.

[0010] As an improvement, a buffer washer for preventing the permanent magnetic ring from sticking is attached above the electromagnet.

[0011] As an improvement, the outer wall end of the driving shell and the outer wall end of the driven shell are provided with dust covers, and the upper part of the dust cover is coated with an aluminum nitride heat dissipation paint.

[0012] As an improvement, the driving end face wheel and the driven end face wheel realize torque transmission through tooth side surface contact.

[0013] Compared with the prior art, the clutch state fixing assembly for limiting the clutch on-off state is designed as a pure physical structure, the magnetic force generated by the electromagnet is used to pull the magnetic clamping block to translate along the plane end of the L-shaped limiting rod sliding groove, so that the limiting rod at the outer wall end of the movable armature can be positioned and slid along the vertical end of the L-shaped limiting rod sliding groove, and when the electromagnet loses power, the magnetic clamping block continues to tightly press the limiting rod under the action of the non-magnetic force spring, so that the clutch state is fixed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a total structure diagram of the high-performance permanent magnetic bistable electromagnetic clutch.

[0015] Figure 2 is a total structure sectional view of the high-performance permanent magnetic bistable electromagnetic clutch.

[0016] Figure 3 is an explosion view of the total structure of the high-performance permanent magnetic bistable electromagnetic clutch.

[0017] Figure 4 is a movable armature structure diagram of the high-performance permanent magnetic bistable electromagnetic clutch.

[0018] As shown in the figure: 1, the driving end face wheel; 2, the driven end face wheel; 3, the driving shell; 31, the driven shell; 32, the sliding washer; 33, the dust cover; 4, the electromagnet; 41, the buffer washer; 5, the movable armature; 6, the permanent magnet ring; 7, the clutch state fixing assembly; 71, the limiting rod; 711, the closed clamping groove; 712, the disconnected clamping groove; 72, the L-shaped limiting rod sliding groove; 73, the magnetic clamping block; 74, the non-magnetic force spring. DETAILED DESCRIPTION

[0019] The utility model makes further detailed description in combination with the drawings.

[0020] As shown in the description Figure 1 , 3 It includes the driving end face wheel 1 and the driven end face wheel 2 that are engaged with each other, the driving end face wheel 1 and the driven end face wheel 2 realize torque transmission through tooth side surface contact, and the shaft rod end of the driving end face wheel 1 and the shaft rod end of the driven end face wheel 2 are provided with the driving shell 3 and the driven shell 31 that are sealingly connected through bolt structure, the inside of the driving shell 3 is provided with the electromagnet 4 that passes through the inner wall of the driving shell 3, the inside of the driven shell 31 is provided with the movable armature 5 that is sleeved on the shaft rod of the driven end face wheel 2, and the bottom surface end of the movable armature 5 is provided with the permanent magnet ring 6 that corresponds to the electromagnet 4, the shaft rod of the driven end face wheel 2 is connected with the center through hole of the driven shell 31 through the sliding washer 32, the shaft rod of the driving end face wheel 1 and the shaft rod of the driven end face wheel 2 are connected through rotating bearing, the upper side of the electromagnet 4 is pasted with the buffer washer 41 that prevents the permanent magnet ring 6 from being adhered, the outer wall end of the driving shell 3 and the driven shell 31 is provided with the dust cover 33, and the upper side of the dust cover is coated with aluminum nitride heat dissipation paint; the rotating bearing is sleeved on the shaft rod of the driving end face wheel 1 and the shaft rod of the driven end face wheel 2, then the driving shell 3 and the movable armature 5 are fixed on the shaft rod of the driving end face wheel 1 and the shaft rod of the driven end face wheel 2 respectively; the movable armature 5 is placed in the driven shell 31, the sliding washer 32 is inserted into the center through hole of the driven shell 31, and the shaft rod of the driven end face wheel 2 passes through the center through hole of the sliding washer 32; the electromagnet 4 is sleeved in the inner recess of the driving shell 3, the inner ring of the electromagnet 4 is located on the outside of the driving end face wheel 1, then the buffer washer 41 is pasted on the upper side of the electromagnet 4 by using glue, so as to prevent the movable armature 5 and the permanent magnet ring 6 from being adhered on the electromagnet 4; the permanent magnet ring 6 is pasted on the bottom surface of the movable armature 5 by using glue for fixation.

[0021] As shown in the description Figure 2 , 3As shown in FIGS. 4, the side of the movable armature 5 is provided with a clutch state fixing assembly 7, the clutch state fixing assembly 7 comprises a limiting rod 71 welded on the outer wall end of the movable armature 5, an L-shaped limiting rod sliding groove 72 located in the interior of the driving shell 3 and a magnetic clamping block 73 located on the plane end of the L-shaped limiting rod sliding groove 72, and the magnetic clamping block 73 and the electromagnet 4 are provided with a non-magnetic force spring 74 for automatic resetting of the magnetic clamping block 73, the rod surface of the limiting rod 71 is provided with a closed clamping groove 711 and a disconnection clamping groove 712 clamped with the magnetic clamping block 73, and the plane end of the L-shaped limiting rod sliding groove 72 is welded with a sealing plate 75 for sealing the magnetic clamping block 73 and the non-magnetic force spring 74, the outer wall end of the driving shell 3 and the driven shell 31 is provided with a dust cover 33, and the upper part of the dust cover is coated with aluminum nitride heat dissipation paint, the magnetic clamping block 73 and the non-magnetic force spring 74 are placed in the sliding groove of the plane end of the L-shaped limiting rod sliding groove 72, the magnetic clamping block 73 is located at the corner of the L-shaped limiting rod sliding groove 72, the sealing plate 75 is welded on the plane end of the L-shaped limiting rod sliding groove 72, finally the limiting rod 71 is inserted into the vertical end through hole of the L-shaped limiting rod sliding groove 72 for fixation, and then the driving shell 3 and the driven shell 31 are fixed by using screws, finally the dust cover 33 coated with aluminum nitride heat dissipation paint is sealed on the driving shell 3 and the driven shell 31.

[0022] In the specific implementation, the positive pole of the electromagnet 4 is started, the magnetic clamping block 73 is retracted, the electromagnet attracts the permanent magnet ring 6 to move downward, thereby driving the driven end face wheel 2 to engage with the driving end face wheel 1, after power-off, the magnetic clamping block 73 is clamped into the closed clamping groove 711 to fix the position under the action of the non-magnetic force spring 74, thereby completing the closing operation of the high-performance permanent magnetic bistable electromagnetic clutch, and the circuit of the electromagnet 4 is reversed, the magnetic force generated by the electromagnet 4 repels the permanent magnet ring 6, the magnetic clamping block 73 is retracted, the limiting rod 71 moves upward with the upward movement of the movable armature 5, the disconnection clamping groove 712 is aligned with the magnetic clamping block 73, and after power-off, the magnetic clamping block 73 is clamped into the disconnection clamping groove 712, so that the driven end face wheel 2 is separated from the driving end face wheel 1.

[0023] The above describes the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if the ordinary skilled person in the art is inspired, without departing from the creative purpose of the utility model, similar structure modes and embodiments are designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. A high-performance permanent-magnetic bistable electromagnetic clutch, comprising a driving end face wheel (1) and a driven end face wheel (2) engaged with each other, and the shaft end of the driving end face wheel (1) and the shaft end of the driven end face wheel (2) are provided with a driving shell (3) and a driven shell (31) sealedly connected through a bolt structure, the inside of the driving shell (3) is provided with an electromagnet (4) penetrating the inner wall of the driving shell (3), the inside of the driven shell (31) is provided with a movable armature (5) sleeved on the shaft of the driven end face wheel (2), and the bottom end of the movable armature (5) is provided with a permanent-magnetic ring (6) corresponding to the electromagnet (4), characterized in that: a clutch state fixing assembly (7) is arranged on the side surface of the movable armature (5), the clutch state fixing assembly (7) comprises a limiting rod (71) welded on the outer wall end of the movable armature (5), an L-shaped limiting rod sliding groove (72) located in the inside of the driving shell (3), and a magnetic clamping block (73) located on the plane end of the L-shaped limiting rod sliding groove (72), and a non-magnetic force spring (74) for automatic resetting of the magnetic clamping block (73) is arranged between the magnetic clamping block (73) and the electromagnet (4).

2. A high performance permanent magnet bi-stable electromagnetic clutch according to claim 1, characterized in that: The shaft of the driven end face wheel (2) is connected with the center through hole of the driven shell (31) through a sliding washer (32), and the shaft of the driving end face wheel (1) and the shaft of the driven end face wheel (2) are connected with the driving shell (3) and the movable armature (5) through rotary bearings.

3. A high performance permanent magnet bi-stable electromagnetic clutch according to claim 1, characterized in that: A closed clamping groove (711) and a disconnection clamping groove (712) for clamping the magnetic clamping block (73) are arranged on the rod surface of the limiting rod (71), and a sealing plate (75) for sealing the magnetic clamping block (73) and the non-magnetic force spring (74) is welded above the plane end of the L-shaped limiting rod sliding groove (72).

4. A high performance permanent-magnet bi-stable electromagnetic clutch according to claim 1, characterized in that: A buffer washer (41) for preventing the permanent-magnetic ring (6) from sticking is pasted above the electromagnet (4).

5. A high performance permanent magnet bi-stable electromagnetic clutch according to claim 1, characterized in that: Dust covers (33) are arranged on the outer wall ends of the driving shell (3) and the driven shell (31), and aluminum nitride heat dissipation paint is coated on the upper ends of the dust covers.

6. A high performance permanent-magnet bi-stable electromagnetic clutch according to claim 1, characterized in that: The driving end face wheel (1) and the driven end face wheel (2) realize torque transmission through tooth side surface contact.

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