JPH04122228U - hub clutch - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] The purpose is to provide a hub clutch that prevents water that has entered the housing from remaining inside by discharging it to the outside and prevents malfunction due to freezing. [Structure] A clutch 57 that connects the housing 17 on the wheel side 27 and the drive axle 3, operating means 71 and 73 that engages and engages this clutch, and the housing 17.
It is characterized by having an opening 85 provided in the housing 17 and an inclined surface 93 that allows the liquid in the housing 17 to flow down to the opening 85.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a hub clutch that connects and disconnects between a drive axle and a wheel.

0002

[Conventional technology]

JP-A-61-238516 and JP-A-2-200532 describe A device (hub clutch) that connects and disconnects between axles is described. This is a four wheel drive (4WD) In a car, the front wheel or rear wheel and the axle are separated and the drive system is rotated. This prevents vibration and noise, improving fuel efficiency and durability. A clutch connects and connects the housing to which the wheel is fixed and the drive axle. has been done.

0003

[Problem that the idea aims to solve]

This housing has through holes for the purpose of equalizing the pressure inside and outside. This is where rainwater and muddy water may enter.

0004 As shown in Fig. 3, the camber angle 201 is negative or positive. Even with a cambered vehicle, the weight of the vehicle may cause the body to sink or the suspension to be affected while driving. When the camber angle to the ground becomes negative due to movement, etc., or when parking on a slope. When driving a car, a puddle 205 is formed in the cylindrical portion 203. housing 2 The through hole 210 of 07 is also for draining the water that has entered, but the water puddle 20 Once 5 is formed, this water will not be discharged to the outside.

[0005] If water freezes inside, the hub clutch may malfunction or become inoperable. be. For example, if water freezes in the gap between the return spring 209, the slide gear 211 can no longer move from the free position on the left side of Figure 3 to the locked position depicted in Figure 3. Ru.

[0006] Therefore, this idea prevents water from staying inside the housing and prevents water from freezing. The purpose of the present invention is to provide a hub clutch whose functions are not hindered.

[0007]

[Means to solve the problem]

The hub clutch of this invention connects the housing on the wheel side and the drive axle. a clutch, an operating means for engaging and disengaging the clutch, and a clutch installed in the housing. an angled opening and an inclined surface that allows liquid within the housing to flow down to the opening; It is characterized by

[0008]

[Effect]

There is a slope inside the housing that allows water to flow down to the opening. does not remain inside. Therefore, if the water freezes, etc., the clutch or operating means may become inoperable. The production is not inhibited and normal functions are maintained.

[0009]

【Example】

One embodiment will be explained with reference to FIGS. 1 and 2.

0010 This embodiment is used on the front wheel side of a part-time 4WD vehicle where the front wheel is the release side. ing. Hereinafter, the hub clutch 1 on the right front wheel side will be explained as an example. In addition, the left and right direction is This is the left and right direction in this vehicle and in FIGS. 1 and 2. Also, parts, etc. that are not marked with symbols. is not shown.

[0011] As shown in FIG. 1, the drive axle 3 has a bearing 7 in a hollow spindle 5 on the vehicle body side. is supported through.

0012 A drive gear 9 is spline connected to the right end of the axle 3, and a retaining ring 11 and washer 13. Also, a constant velocity joint 15 is installed on the left end side of the axle 3. is located. A seal 16 is arranged between the left end of the spindle 5 and the axle 3. has been done.

[0013] The housing 17 has a top portion 21 and a cylindrical portion 23 that are integrated with a bolt 19. There is. The right front wheel 27 is attached to the flange 25 of the cylindrical portion 23 with a bolt 29 and a nut. A brake disc 33 is fixed with bolts 35. or A cover 37 is screwed onto the right end of the top portion 21.

[0014] The housing 17 is spun by a bearing 39 on the left side and a bearing on the right side. It is supported on Le5. There is a cylinder between the left end of the housing 17 and the spindle 5. A wall 41 is arranged.

[0015] A ring-shaped slide gear 43 is arranged inside the housing 17, and the top part 21 A spline portion 45 provided between the two members is connected movably in the axial direction. A gear 47 that can be engaged with and disengaged from the drive gear 9 is provided on the inner periphery of the slide gear 43. There is.

[0016] A center ring member 49 slides and rotates between the drive gear 9 and the housing 17. It is arranged so as to be rotatable and facilitates the engagement and disengagement between the gear 47 and the drive gear 9. . The drive gear 9 is equipped with a retaining ring 51 for positioning the center ring member 49. The top part 21 has a structure that prevents contact between the slide gear 43 and the center ring member 49. A retaining ring 53 is attached for stopping. Centering member 49 has air circulation holes. 55 are provided.

[0017] The slide gear 43 moves to the lock position shown in the lower half of FIG. When engaged, the axle 3 and the right front wheel are connected via the slide gear 43, and the right front wheel is connected to the front right wheel. It can be driven by an engine. In addition, the slide gear 43 is shown in the upper half of FIG. - position and the gears 9 and 47 are disengaged, the right front wheel is disconnected from the axle 3. It is released and becomes free rotation state.

[0018] In this way, a clutch 57 that connects and connects the axle 3 and the right front wheel is configured.

[0019] A plate 61 having a plurality of arms 59 is arranged between the axle 3 and the cover 37. It is. This arm 59 is inserted through the toothless part 63 provided in the spline part 45 and is inserted into the spline part 45. It is fixed to the ride gear 43.

[0020] The diaphragm 65 is a flexible diaphragm that includes a retaining ring 67 at its outer edge. This retaining ring 67 allows the plate to be airtightly attached to the inner periphery of the top portion 21. The inner edge side is airtightly sandwiched between the holding member 61 and the holding member 69 supported by the holding member 61. . A slide gear 43 is attached between the holding member 69 and the cover 37 in the free position direction. A return spring 71 (operating means) is arranged.

[0021] In this way, the diaphragm 65 constitutes the actuator 73 (operating means). It is.

[0022] An orifice 75 provided in the spindle 5 is provided between the axle 3 and the spindle 5. An air passage 77 communicating with the actuator 73 is formed. Orifice 7 5 is connected to an air hose 81 through a connecting pipe 79. actuator 73 is connected to the air pump via a control valve device by such a pressure path. .

[0023] Apply positive pressure to the actuator 73 from the air pump to release the return spring 71. When the diaphragm 65 is deflected to the right against the biasing force, it slides together with the plate 61. The idle gear 43 moves to the lock position and the clutch 57 is connected. Also, pressure supply When the actuator 73 is opened to the atmosphere by stopping the return spring 7 1, the slide gear 43 returns to the free position and the clutch 57 is disengaged. be done.

[0024] Between the top 21 of the housing 17 and the cover 37 is a porous material made of sintered metal powder. A filter 83 is disposed, and openings 85 are provided at equal intervals in the circumferential direction on the top portion 21. I'm being kicked. The compartment 87 formed between the cover 37 and the diaphragm 65 is through the filter 83, the threaded portion 89 between the cover 37 and the top 21, and the opening 85. and is open to the atmosphere.

[0025] In this way, the internal pressure of compartment 87 is always maintained at atmospheric pressure, and therefore Therefore, the operation of the actuator 73 is not inhibited, and the compartment 8 is not affected by temperature changes. There is no malfunction of the clutch 57 due to expansion and contraction of the clutch 57.

[0026] The filter 83 blocks mud and pebbles, but rainwater is blocked by the housing 17 (compartment 8). 7) May invade inside.

[0027] Therefore, as shown enlarged in FIG. 2, the inner circumference of the outer edge 91 of the holding member 69 is A tapered surface 93 (slanted surface) is formed with a downward slope toward the filter 83. Ru. For example, when parking on a slope or on a flat surface, this tapered surface 93 has a Water flows down when the suspension spring is at its maximum deflection (at maximum load capacity) A sufficient angle 95 is provided.

[0028] Therefore, the water that has entered the compartment 87 flows down the tapered surface 93 as shown by the arrow 97. The liquid is discharged to the outside from the opening 85 via the filter 83 and the screw portion 89. this As the water that enters does not stay inside, the water freezes and the return spring 71 or the movement of the plate 61 or the holding member 69 may be hindered. do not have. Therefore, the actuator 73 and clutch 57 always operate smoothly even in winter or in cold regions. It operates normally and does not malfunction or become inoperable.

[0029] In this way, the hub clutch 1 is configured.

[0030] When the vehicle is running in two-wheel drive, the front wheel power transmission system is switched off by the 2-4 switching mechanism. At the same time, the left and right front wheels are separated from each axle by each hub clutch. It is separated and becomes free rotation state. Therefore, the rotation of the front wheel drive system is prevented, This prevents vibrations, noise, reduced fuel efficiency, and wear and tear on various parts of the front wheel drive system.

[0031] When the vehicle is running in 4WD, the front wheel power transmission system is switched to the engine by the 2-4 switching mechanism. At the same time, the left and right front wheels are connected to each axle by each hub clutch. Ru. In this way, the straight-line stability of the vehicle and its ability to travel on rough roads are improved.

[0032] As mentioned above, the hub clutch improves the durability and fuel efficiency of vehicles even in winter and in cold regions. Improvement effects and vibration noise prevention effects can be obtained.

[0033] Such 2-4 switching operation may be operated manually from the driver's seat or depending on road conditions and It is configured to be automatically operated according to the steering conditions of the vehicle.

[0034] In addition, basically for vehicles with positive camber, except when there is a large roll. , the angle 95 of the tapered surface 93 may be zero. Also, the slope is one where water flows down. It is not limited to tapered surfaces.

[0035] The operating means is not limited to a fluid actuator as in the embodiment, but may also be an electric actuator, for example. But that's fine. Regardless of the type of actuator, the cover 37 is used for internal maintenance and inspection. may be provided, and to protect the seal 41 from changes in the internal pressure of the housing. An opening may be provided for this purpose. Therefore, the seam between the cover and the housing Water may enter through the opening, so the water discharge mechanism of this invention is effective.

[0036]

[Effect of the idea]

In the hub clutch of this invention, water that has entered the inside of the housing flows down the slope. It is discharged to the outside through the opening and does not stay inside. Therefore, malfunction due to freezing of water Normal function is maintained without causing malfunction or inoperability.

[Brief explanation of drawings]

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

FIG. 2 is an enlarged view of the main part of FIG. 1;

FIG. 3 is a conventional sectional view.

[Explanation of symbols]

3 Drive axle 17 Housing 27 Wheel Wheel 57 Clutch 71 Return spring (operating means) 73 Actuator (operation means) 85 Opening 93 Tapered surface (slanted surface)

Claims (1)

[Scope of utility model registration request] 1. A clutch that connects a housing on the wheel side and a drive axle, an operating means for operating the clutch on and off, an opening provided in the housing, and an inclination for causing liquid in the housing to flow down to the opening. A hub clutch characterized by having a surface.