JPH04138133U - electromagnetic clutch - Google Patents

Abstract

(57) [Summary] [Purpose] This is an electromagnetic clutch in which an electromagnet is supported in a housing, and a rotating case containing a friction clutch is housed in the housing together with oil, which makes it easy to support the electromagnet and draw out the lead wire. The purpose of the present invention is to provide a device that can be used with a flexible configuration and protect lead wires from oil. [Structure] The electromagnetic clutch of this invention consists of a housing filled with oil, a rotating case that rotates within the housing, a friction clutch housed in the rotating case, and an electromagnet that operates the friction clutch from outside the rotating case. The electromagnet is characterized by comprising a support member that supports the electromagnet inside the housing, and a through hole provided in the support member through which the lead wire of the electromagnet is drawn out to the outside of the housing.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to an electromagnetic clutch.

0002

[Conventional technology]

Japanese Unexamined Patent Publication No. 195449/1983 describes a "slip-limiting gear assembly". It is. This is a differential device that uses an electromagnetic clutch to limit differential movement. be. In this device, the multi-plate clutch part of the electromagnetic clutch is used together with the differential mechanism in the rotating case. The electromagnet is bolted inside the housing that houses the rotating case. is fixed. Also, the lead wire of the electromagnet is pulled out from the through hole of the housing. It's being brought out.

0003 In this way, the electromagnet was separated from the rotating side clutch part and placed on the stationary side, so Exciting current can be efficiently supplied without using slip rings or complicating the configuration. .

0004

[Problem that the idea aims to solve]

However, as mentioned above, the electromagnet support location and the lead wire extraction location are separate. Therefore, the structure is complicated and the housing requires many machining parts. Also, The housing is filled with oil, and this oil is fixed to the rotating case. The lead wire of the electromagnet is pulled up by the ring gear to lubricate each part, but the lead wire of the electromagnet is Since it is exposed in the environment, the insulation coating is exposed to oil and easily deteriorates.

[0005] Therefore, this idea has a simple configuration for supporting the electromagnet and pulling out the lead wire. The purpose is to provide an electromagnetic clutch that cuts off oil from the lead wire. .

[0006]

[Means to solve the problem] The electromagnetic clutch of this invention consists of a housing filled with oil and a rotating body inside the housing. A rotating case, a friction clutch housed in the rotating case, and the outside of the rotating case. The electromagnet that operates this friction clutch and the electromagnet supported inside the housing. A support member and a lead wire of an electromagnet provided on this support member are drawn to the outside of the housing. It is characterized by being equipped with a through hole through which the air can be extracted.

[0007]

[Effect]

The lead wire of the electromagnet passes through the support member that supports the electromagnet in the housing to the outside. drawn out. In this way, supporting the electromagnet and pulling out the lead wires are done at the same location. The structure is simple, and only requires machining in two places on the housing. Compared to the conventional example, the amount of machining of the housing can be reduced and costs can be reduced. Ru.

[0008] In addition, the lead wires are covered with support members and are not exposed to oil, so they are not exposed to oil. No deterioration of the lead wires will occur.

[0009]

【Example】

One embodiment will be explained with reference to FIGS. 1 to 4.

0010 Figure 1 shows a disconnection device using this embodiment, and Figure 4 shows a four-wheel disconnection device using this disconnection device. Shows the power system of the drive vehicle. Hereinafter, the left and right directions are the left and right directions of this vehicle, and Figure 1 The right side corresponds to the front of this vehicle (the upper part of FIG. 4).

[0011] First, the configuration of this power system will be explained with reference to FIG.

0012 This power system consists of engine 1, transmission 3, front differential 5 (front wheel side (differential device), front axles 7, 9, left and right front wheels 11, 13, transfer 15, propeller shaft 17, disconnection device 19 in Fig. 1, rear differential 21 (on the rear wheel side) It consists of a differential (differential device), rear axles 23, 25, left and right rear wheels 27, 29, etc. has been completed.

[0013] Next, the disconnection device 19 will be explained.

[0014] As shown in FIG. 1, the connecting shaft 31 is connected to a differential carrier 33 (housing ) and is supported by the carrier 33 by a bearing 35. Both are connected to the propeller shaft 17 side by a spline portion 37. Professional The propeller shaft 17 is connected from the transfer 15 through the differential case 5 of the front differential. It is connected to the engine 1 side. In this way, the connecting shaft 31 receives the drive from the engine 1. Rotationally driven by force.

[0015] A clutch drum 41 (rotating case) is attached to the flange portion 4 of the connecting shaft 31 at the rear end. It is fixed in one piece with 3. A hub 45 is arranged inside the drum 41 so as to be relatively rotatable. The drum 41 is supported by a shaft support 47 and a bearing 49.

[0016] A drive pinion shaft 53 is spline connected to the boss portion 51 of the hub 45. It is. The shaft 53 is supported by the carrier 33 by bearings 55, 55. , At the rear end is a drive pinion gear that meshes with the ring gear 57 of the rear differential 21. 59 are integrally formed.

[0017] Between the clutch drum 41 and the hub 45, there is a multi-plate main link that connects them. A latch 61 is disposed on the front side of which a pressing member 63 is axially moved toward the hub 45. Spline connected for free movement.

[0018] A cam ring 65 is arranged on the front side of the pressing member 63, and a cam ring 65 is arranged between them as shown in FIG. As shown, a cam 69 is formed via a ball 67. cam ring 65 and A multi-plate pilot clutch 7 is provided between the clutch drum 41 and the clutch drum 41 to connect them. 1 (friction clutch) is arranged.

[0019] An armature 73 is arranged on the rear side of the clutch 71. drum 41 hula A ring-shaped electromagnet 75 is arranged in front of the ring part 43. The electromagnet 75 is It is fixed inside the carrier 33 by a bolt 77 (supporting member). Flange part 43 is provided with a non-magnetic material to prevent the magnetic force of the electromagnet 75 from short-circuiting and guide it to the armature 73. A ring 79 is embedded.

[0020] Oil is sealed in the differential carrier 33, and this oil is supplied to the ring gear 57. It is pushed up by the rotation of the gears 57 and 59 and lubricates the meshing parts and bearings of the gears 57 and 59. Ru. In addition, the pumped up oil is transferred to the bearing housing 81 of the bearing 55. The oil is supplied to the front side of the carrier 33 through the oil passage 83 provided in the bearing. In addition to lubricating the clutch drum 49 and cooling the electromagnet 75, The oil flows in and out from the through hole 85 and lubricates the inside of the drum 41.

[0021] As shown in FIG. 3, the electromagnet 75 consists of an electromagnetic coil 87 and a yoke 89. Bo The bolt 77 passes through the differential carrier 33 and has a threaded portion 9 provided between it and the yoke 89. 1 supports an electromagnet 75 inside the carrier 33. bolt 77 and yoke An O-ring 93 is arranged between the bolt 77 and the carrier 33. A gasket 95 is arranged.

[0022] The lead wire 97 of the electromagnetic coil 87 connects to the through hole 99 provided in the bolt 77 and the bolt. It is pulled out to the outside via the grommet 101 embedded in the head of the Ru.

[0023] In this way, supporting the electromagnet 75 and pulling out the lead wire 97 are performed at the same location. The structure is simpler than the conventional example, in which these processes are performed separately, and the camera is The number of machining parts (machining amount) for the rear 33 is still small, which contributes to cost reduction. . Also, the lead wire 97 is isolated from the oil by the bolt 77 and O-ring 93. This prevents the insulation coating from deteriorating due to oil.

[0024] When the electromagnet 75 attracts the armature 73, the pilot clutch 71 is pressed. The cam ring 65 is connected to the drum 41 via the clutch 71, and the cam ring 65 is connected to the drum 41 via the clutch 71. The shaft 31 side (front wheel side) and the drive pinion shaft 53 (rear wheel side) are connected to the clutch 7. 1. Via the cam 69, the pressing member 63, and the hub 45, according to the engagement force of the clutch 71. Connected by strength.

[0025] When the pilot clutch 71 is engaged, the driving force of the engine 1 acts on the cam 69. As shown in FIG. 2, the thrust force 103 moves the pressing member 63 in the axial direction, Clutch 61 is engaged.

[0026] In this way, the coupling force between the front wheels and the rear wheels is strengthened by the clutches 61 and 71. . The forward thrust force 105 is applied to the clamp via a bearing 107 and a washer 109. is input to the hit drum 41 and is canceled out by the thrust force 103.

[0027] Next, the function of the disconnection device 19 will be explained based on the power performance of the vehicle shown in FIG.

[0028] The driving force of the engine 1 is transmitted to the front wheels from the transmission 3 via the front differential 5. 11 and 13, and the propeller shaft 1 via a transfer 15. Rotate 7.

[0029] At this time, when the disconnection device 19 is opened, the rear wheels 27 and 29 are disconnected, and the vehicle is moved forward. It provides the characteristics of a wheel drive vehicle and improves fuel efficiency.

[0030] When the disconnection device 19 is connected, the rear wheel side is connected to the engine 1 side and the transmitted driving force is is distributed to the rear wheels 27 and 29 via the rear differential 21, and the vehicle enters the 4WD state. subordinate This means that even if the front wheels are spinning on rough roads, the driving force from the rear wheels will maintain drivability. drooping

[0031] Furthermore, the greater the coupling force of the disconnection device 19, the greater the differential limiting force between the front and rear wheels. The straight-line stability of the vehicle is improved.

[0032] Open the pilot clutch 71 or adjust the slippage appropriately to create a differential between the front and rear wheels. Allowing this allows smooth and stable turning, as well as tight corner braking. The phenomenon is prevented.

[0033] In addition, in this invention, the structure of the support member is such that the bolt is formed integrally with the yoke. It may be passed through outside the housing and fixed with a nut. Also, attach the support member to the yoke. It is also possible to connect the body or a separate body and pass it through the outside of the housing, and fix it with a retaining ring on the outside. stomach. If the supporting member is formed integrally with the yoke and passes through the outside of the housing, the lead No seals are required to protect the wires from oil.

[0034]

[Effect of the idea]

In this design, the electromagnet is supported within the housing, and the rotating housing houses the friction clutch. This is an electromagnetic clutch in which the base is housed in a housing along with oil, and the electromagnet Since the electromagnet lead wires were pulled out through the support member, they were connected to a separate location. The configuration is simpler than the conventional example, and the amount of machining of the housing is reduced, reducing costs. At the same time, since the lead wires are not exposed to oil, deterioration of the insulation coating is prevented and reliability is improved. reliability is improved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an interrupter using one embodiment.

FIG. 2 is a sectional view taken along line AA in FIG. 1;

FIG. 3 is an enlarged view of part B in FIG. 1;

FIG. 4 is a skeleton mechanism diagram showing the power system of the vehicle.

[Explanation of symbols]

33 Differential carrier (housing) 41 Clutch drum (rotating case) 71 Pilot clutch (friction clutch) 75 Electromagnet 77 Bolt (supporting member) 97 Lead wire 99 Through hole

Claims (1)

[Scope of utility model registration request] Claim 1: A housing containing oil, a rotating case that rotates within the housing, a friction clutch housed in the rotating case, an electromagnet that operates the friction clutch from outside the rotating case, and an electromagnet located inside the housing. What is claimed is: 1. An electromagnetic clutch comprising: a support member supported by the support member; and a through hole provided in the support member through which a lead wire of an electromagnet is drawn out to the outside of the housing.