Miniature electromagnetic clutch and equipment rotation control separation device

Abstract

The utility model provides a miniature electromagnetic clutch and an equipment rotation control separation device, and relates to the technical field of miniature electromagnetic clutches, the miniature electromagnetic clutch comprises an electromagnetic control assembly, a driving shaft assembly, a friction clutch assembly and a driven assembly, the electromagnetic control assembly comprises a coil assembly and a transmission bearing, the coil assembly sleeves the driving shaft assembly through a transmission bearing; the friction clutch assembly is located between the driven assembly and the coil assembly and connected with the driven assembly. The equipment rotation control separation device comprises the miniature electromagnetic clutch. The electromagnetic control assembly and the friction clutch assembly are matched with each other, so that transmission connection or separation of the driving shaft assembly and the driven assembly can be effectively controlled; by the adoption of the transmission bearing, no matter the driving shaft assembly rotates independently or the driving shaft assembly and the driven assembly rotate synchronously, friction is small, rotation is sensitive, the rotating speed is large, heating and abrasion can be remarkably reduced, and the service life is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro electromagnetic clutch technical field, concretely relates to a micro electromagnetic clutch and equipment rotation control separation device. BACKGROUND

[0002] The micro electromagnetic clutch is also called small electromagnetic clutch, and the main use of the micro electromagnetic clutch includes connection, disconnection, speed change, high-frequency operation, indexing, rotation, buffer starting, overload protection and others, and is widely applied to printers, copying machines, fax machines, office equipment and communication machinery, other electronic equipment and the like.

[0003] At present, the rotation structure part of the micro electromagnetic clutch on the market generally adopts plastic parts combined with an iron core to carry out rotation action, and sliding friction exists between the plastic parts and the iron core in the movement process, so that great resistance exists, which not only limits the rotation speed of the clutch, but also generates heating and wear problems, thereby affecting the service life of the clutch. UTILITY MODEL CONTENTS

[0004] The utility model discloses a micro electromagnetic clutch and equipment rotation control separation device to solve the above technical problems in the prior art, and the preferred technical scheme in the plurality of technical schemes provided by the utility model can produce a plurality of technical effects, which are described in detail below.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The utility model provides a micro electromagnetic clutch, including electromagnetic control assembly, driving shaft assembly, friction clutch assembly and driven assembly, wherein: the electromagnetic control assembly includes coil assembly and transmission bearing, the coil assembly is set to the driving shaft assembly through the transmission bearing, the friction clutch assembly is located between the driven assembly and the coil assembly, and is connected with the driven assembly, the coil assembly is electrified, the driven assembly is connected with the driving shaft assembly transmission through the friction clutch assembly, so that the driven assembly and the driving shaft assembly synchronous rotation.

[0007] Preferably, the driving shaft assembly includes a driving shaft and an iron core, wherein: the iron core is fixedly sleeved on the driving shaft and synchronously rotates with the driving shaft, and the coil assembly is sleeved on the iron core through the transmission bearing.

[0008] Preferably, the driving shaft assembly includes a cover body, the cover body is fixedly connected with the iron core, and the driving shaft, the iron core and the cover body synchronously rotate.

[0009] Preferably, the outer edge of the cover extends away from the driven assembly and forms a receiving groove, and the coil assembly is located in the receiving groove.

[0010] Preferably, the friction clutch assembly comprises a magnetic block and a brake pad, wherein the magnetic block is fixedly connected with the driven assembly, the brake pad is movably sleeved on the driving shaft and is slidably connected with the driven assembly, the brake pad rotates synchronously with the driven assembly, when the coil assembly is powered on, the brake pad moves away from the magnetic block and is attracted to the cover, and when the coil assembly is powered off, the brake pad moves away from the cover and is attracted to the magnetic block.

[0011] Preferably, the coil assembly comprises a skeleton, an electromagnetic coil and a shell, wherein the skeleton is sleeved on the iron core through the transmission bearing, the electromagnetic coil is wound on the skeleton, and the shell is covered to the outside of the skeleton.

[0012] Preferably, the driven assembly comprises a driven gear, the driven gear is rotatably sleeved on the driving shaft, and the brake pad is slidably connected with the driven gear.

[0013] Preferably, the transmission bearing is a ball bearing.

[0014] Preferably, the transmission bearing is an oil-containing bearing.

[0015] The utility model provides a kind of equipment rotation control separation device, including any of the aforementioned miniature electromagnetic clutch.

[0016] The utility model provides a kind of miniature electromagnetic clutch and equipment rotation control separation device at least have following beneficial effects:

[0017] The miniature electromagnetic clutch comprises an electromagnetic control assembly, a driving shaft assembly, a friction clutch assembly and a driven assembly, the electromagnetic control assembly is the control part of the electromagnetic clutch, for controlling the friction clutch assembly clutch action;The friction clutch assembly is a transmission part, through its clutch action, the transmission connection and separation of the driving shaft assembly and the driven assembly are realized.

[0018] The electromagnetic control assembly comprises a coil assembly and a transmission bearing, the coil assembly is sleeved on the driving shaft assembly by the transmission bearing, the friction clutch assembly is located between the driven assembly and the coil assembly, and is connected with the driven assembly, in the process of actual use, when coil assembly is powered off, friction clutch assembly is in separation state, at this time, driving shaft assembly rotates independently, when coil assembly is powered on, friction clutch assembly is in attraction state, at this time, the driven assembly is transmission connected with the driving shaft assembly, and both rotate synchronously.

[0019] The utility model discloses a electromagnetic control assembly and friction clutch assembly intercoordination, can effectively control driving shaft assembly and driven assembly transmission connection or separation, the effect is remarkable, adopts transmission bearing, whether it is driving shaft assembly rotates alone, or driving shaft assembly and driven assembly synchronous rotation, all have smaller friction, not only rotation sensitive, rotation speed is big, can significantly reduce the heat and wear, greatly prolong the service life of micro electromagnetic clutch. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, below description's drawing only some embodiments of the utility model, for those skilled in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0021] Figure 1 And Figure 2 It is the structural schematic diagram of an embodiment of the utility model;

[0022] Figure 3 It is the schematic diagram of the brake pad and cover of an embodiment of the utility model and is in the state of suction;

[0023] Figure 4 And Figure 5 It is the structural schematic diagram of another embodiment of the utility model;

[0024] Figure 6 It is the schematic diagram of the brake pad and magnetic block of another embodiment of the utility model and is in the state of suction.

[0025] Reference signs

[0026] 1, electromagnetic control assembly;11, transmission bearing;111, ball bearing;112, oil-containing bearing;12, framework;13, electromagnetic coil;14, shell;2, driving shaft assembly;21, driving shaft;22, iron core;23, cover;24, machine screw;3, friction clutch assembly;31, magnetic block;32, brake pad;4, driven assembly;41, driven gear;42, driven bearing. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the scope of the utility model.

[0028] Example 1:

[0029] This invention provides a miniature electromagnetic clutch, reference... Figures 1 to 4 As shown, the miniature electromagnetic clutch includes an electromagnetic control component 1, a drive shaft component 2, a friction clutch component 3, and a driven component 4.

[0030] The electromagnetic control component 1 includes a coil assembly and a transmission bearing 11. The coil assembly is sleeved on the drive shaft assembly 2 through the transmission bearing 11. The drive shaft assembly 2 rotates relative to the coil assembly through the transmission bearing. The friction clutch assembly 3 is located between the driven assembly 4 and the coil assembly and is connected to the driven assembly 4.

[0031] When the coil assembly is de-energized, the friction clutch assembly 3 is disengaged. At this time, the driven assembly 4 and the driving shaft assembly 2 are disconnected, and the driving shaft assembly 2 rotates independently relative to the driven assembly 4.

[0032] When the coil assembly is energized, it generates a suction force, which drives the friction clutch assembly 3 to engage. At this time, the driven assembly 4 is connected to the driving shaft assembly 2 through the friction clutch assembly 3, and the driving shaft assembly 2 and the driven assembly 4 rotate synchronously.

[0033] The electromagnetic control component 1 drives the friction clutch component 3 to engage or disengage through electromagnetic adsorption, thereby connecting or separating the drive shaft component 2 and the driven component 4, resulting in a significant clutch effect.

[0034] Furthermore, by using a transmission bearing 11 to connect the drive shaft assembly 2 and the coil assembly, whether the drive shaft assembly 2 rotates independently or the drive shaft assembly 2 and the driven assembly 4 rotate synchronously, there is less friction. Not only is the rotation process sensitive and smooth with a high speed, but it can also significantly reduce heat generation and wear, and greatly extend the service life of the miniature electromagnetic clutch.

[0035] Example 2:

[0036] Example 2 is based on Example 1:

[0037] like Figures 1 to 4 As shown, the drive shaft assembly 2 includes a drive shaft 21 and an iron core 22. The iron core 22 is sleeved on the drive shaft 21 and fixedly connected to the drive shaft 21 by a mortise screw 24. The iron core 22 rotates synchronously with the drive shaft 21. The coil assembly is sleeved on the iron core 22 through a transmission bearing 11.

[0038] The iron core 22 and the coil assembly work together to generate a stable magnetic attraction force when energized, providing sufficient power for the engagement action of the friction clutch assembly 3.

[0039] As an optional implementation, the driving shaft assembly 2 comprises a cover 23, which is sleeved on the driving shaft 21 and is riveted with the iron core 22, and the driving shaft 21, the iron core 22 and the cover 23 rotate synchronously.

[0040] As an optional implementation, the outer edge of the cover 23 extends away from the driven assembly 4 and forms an annular enclosure, and a containing groove is formed inside the annular enclosure, and one end of the coil assembly is located in the containing groove.

[0041] The cover 23 is one of the driving components, cooperates with the coil assembly, and is used for the clutching action of the friction clutch assembly 3, and on the other hand, it is the cover of the coil assembly and is used for the protection of the coil assembly.

[0042] As an optional implementation, the friction clutch assembly 3 comprises a magnetic block 31 and a brake pad 32, the magnetic block 31 is fixedly connected with the driven assembly 4; a shaft sleeve is fixedly sleeved on the driving shaft 21, the brake pad 32 is movably sleeved on the shaft sleeve in the axial direction, the brake pad 32 is slidably connected with the driven assembly 4, and the brake pad 32 can slide relative to the driven assembly 4 along the driving shaft 21 in the axial direction, and on the other hand, it rotates synchronously with the driven assembly 4.

[0043] In actual use, when the coil assembly is powered, a magnetic attraction force is generated, the brake pad 32 moves away from the magnetic block 31 and is attracted to the cover 23, at this time, a static friction force is generated between the brake pad 32 and the cover 23, so that the driving shaft assembly 2 drives the driven assembly 4 to rotate synchronously.

[0044] When the coil assembly is powered off, the magnetic attraction force is eliminated, the brake pad 32 is separated from the cover 23 under the adsorption of the magnetic block 31, moves away from the cover 23, and is attracted to the magnetic block 31, at this time, the driving shaft assembly 2 rotates independently relative to the driven assembly 4.

[0045] As an optional implementation, the coil assembly comprises a skeleton 12, an electromagnetic coil 13 and an outer shell 14.

[0046] The skeleton 12 is provided with a mounting hole penetrating in the axial direction, and a transmission bearing 11 is fixedly installed in the mounting hole, and the transmission bearing 11 is sleeved on the iron core 22; the electromagnetic coil 13 is wound on the skeleton 12; and the outer shell 14 covers the outer side of the skeleton 12.

[0047] As an optional implementation, the driven assembly 4 comprises a driven gear 41, which is rotatably sleeved on the driving shaft 21 through a driven bearing 42, and preferably, the driven bearing 42 is a ball bearing.

[0048] The brake pad 32 is in sliding connection with the driven gear 41, and in particular, a guide groove is provided through an end surface of the brake pad 32 in an axial direction, and a guide column is provided on an end surface of the driven gear 41, the guide column being inserted into the guide groove and being in sliding connection with the guide groove.

[0049] As an optional embodiment, the transmission bearing 11 is provided as a ball bearing 111.

[0050] By using the ball bearing, the advantages of low friction coefficient, long service life, high reliability, high precision and fast response speed are achieved.

[0051] Embodiment 3

[0052] The difference between Embodiment 3 and Embodiment 2 is that:

[0053] As shown in Figure 5 and Figure 6 The transmission bearing 11 is provided as an oil-impregnated bearing 112.

[0054] By using the oil-impregnated bearing, the advantages of self-lubricating property, simple structure, low cost, good shock resistance and low-speed heavy-load applicability are achieved.

[0055] In actual application, the user selects Embodiment 2 or Embodiment 3 according to actual needs.

[0056] Embodiment 4

[0057] Embodiment 4 is based on any of the above embodiments:

[0058] The utility model provides a kind of equipment rotation control separation device, and the equipment rotation control separation device includes the micro electromagnetic clutch.

[0059] The equipment rotation control separation device using the micro electromagnetic clutch has stable clutching effect, and rotation action is sensitive, rotation speed is large, and service life is long.

[0060] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0061] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, a feature defined with "first", "second" or "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" or "several" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0062] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or can be integrated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0063] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A micro electromagnetic clutch, characterized by, The electromagnetic clutch comprises an electromagnetic control assembly, a driving shaft assembly, a friction clutch assembly and a driven assembly. The electromagnetic control assembly comprises a coil assembly and a transmission bearing, the coil assembly is sleeved on the driving shaft assembly through the transmission bearing. The coil assembly is powered, the driven assembly is connected with the driving shaft assembly through the friction clutch assembly, so that the driven assembly rotates synchronously with the driving shaft assembly.

2. The micro electromagnetic clutch according to claim 1, wherein The driving shaft assembly comprises a driving shaft and an iron core. The iron core is fixedly sleeved on the driving shaft and rotates synchronously with the driving shaft. The coil assembly is sleeved on the iron core through the transmission bearing.

3. The micro electromagnetic clutch of claim 2, wherein, The driving shaft assembly comprises a cover body, the cover body is fixedly connected with the iron core, and the driving shaft, the iron core and the cover body rotate synchronously.

4. The micro electromagnetic clutch of claim 3, wherein, The outer edge of the cover body extends away from the driven assembly and forms a containing groove, and the coil assembly is located in the containing groove.

5. The micro electromagnetic clutch of claim 3, wherein, The friction clutch assembly comprises a magnetic block and a brake pad. The magnetic block is fixedly connected with the driven assembly. The brake pad is movably sleeved on the driving shaft and is slidably connected with the driven assembly, the brake pad rotates synchronously with the driven assembly. When the coil assembly is powered, the brake pad moves away from the magnetic block and is attracted to the cover body. When the coil assembly is powered off, the brake pad moves away from the cover body and is attracted to the magnetic block.

6. The micro electromagnetic clutch of claim 2, wherein, The coil assembly comprises a framework, an electromagnetic coil and a shell. The framework is sleeved on the iron core through the transmission bearing. The electromagnetic coil is wound on the framework. The shell is covered outside the framework.

7. The micro electromagnetic clutch of claim 5, wherein, The driven assembly comprises a driven gear, the driven gear is rotatably sleeved on the driving shaft, and the brake pad is slidably connected with the driven gear.

8. The micro electromagnetic clutch according to any one of claims 1-7, wherein, The transmission bearing is a ball bearing.

9. The micro electromagnetic clutch according to any one of claims 1-7, wherein, The transmission bearing is an oil-containing bearing.

10. A device rotation control separation apparatus, characterized by, The electromagnetic clutch comprises the micro electromagnetic clutch of any one of claims 1-9. The electromagnetic clutch comprises the micro electromagnetic clutch of any one of claims 1-9.

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