JPH01317835A - Device for discretely connecting wheel of driving axle of automobile selectively - Google Patents

Abstract

PURPOSE: To achieve the miniaturization and cost reduction of a device and to enhance the operability thereof by forming a plurality of end claws opposing each other both to the wheel driving shaft and to the shaft ends for retaining the wheels thereof, and by arranging connecting plates receiving a spring load in the engaging direction between both end claws. CONSTITUTION: A plurality of end claws 4, 5 opposing each other are formed to a wheel driving shaft 1 and to the shaft end 3 for retaining the wheel 2. A connecting plate 7 for receiving a spring force is movably supported between both the end claws 4, 5, and a large number of recessed parts 8 corresponding to both end claws 4, 5 are formed around the circumference of the connecting plate 7. In the engaging/releasing condition of the separation/connection device thus formed, the pin 9 movably supported inside the shaft end 3 is acted on the connecting plate 7 against a spring 6. On the other hand, a shaft 11 of an eccentric ring 10 for supporting the other end of the pin 9 is supported inside a cap nut 12 fitted to the shaft end 3. Further, the shaft 11 is made turnable by a manual bent piece 13 having an elasticity stopping bent piece 14.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system in which the shaft end of a wheel drive shaft that holds the wheels of an automobile having at least two drive axles is subject to a spring load and is movable to the shaft end. The present invention relates to a device for the selective individual connection of the wheels of a drive axle of a motor vehicle, each connectable to a wheel drive axle via a beak coupling device operable by a pin supported on the wheel drive axle.

[Prior Art J] In such automobiles, the wheel drive axles are permanently driven, and the wheels of the drive axle can be connected or disconnected depending on the driving conditions to perform driving in all-wheel drive. driving is carried out on only one drive axle. In a practically known configuration, the wheel drive axle has circumferential toothing, and the shaft end holding the axle can be associated with a sleeve-like element with corresponding internal toothing, which is subjected to a spring force by means of a pin supported on the shaft end. It is possible to move against it. Since the pin has a transverse projection that fits into the helical groove, the pin and thus also the sleeve-like element perform the necessary axial movement by rotation of the helical groove. The relatively precise peripheral teeth and internal teeth of the parts to be connected to each other must be relatively wide in the axial direction in order to avoid excessive surface pressure, but this requires a relatively large connecting stroke, and this large connecting stroke This increases the axial length of the entire device, and the collar-like structural member with spiral grooves etc. protrudes beyond the contour of the wheel rim.
It becomes difficult to maintain the vehicle width specified by the law.

Furthermore, the disadvantage arises that *a requires considerable bending, and the resulting distortions in the teeth make the disengagement of the separating coupling device extremely difficult.

[1IWII OBJECT OF THE INVENTION] The problem underlying the invention is to eliminate these drawbacks and to improve the device mentioned at the beginning, reducing the overall axial length and reducing the technical snow layer. The objective is to reduce the amount of heat generated and to make the device operate with little difficulty.

[Means for Solving the Problem J] In order to solve this problem, according to the present invention, the wheel drive shaft and the shaft end each have an end pawl facing each other, and have a circumferential recess corresponding to the end pawl and extend in the axial direction. A connecting plate is provided which receives a spring load in the direction of engagement with the transfer @OJ function, a pin acts on this connecting plate, and the J! An eccentric wheel shaft extending perpendicularly to the i-wheel @ line is supported, a pin touches the eccentric wheel of the eccentric wheel shaft, and the eccentric wheel shaft can be rotated by a manual bending piece that can swing around the inner circle.

〔Effect of the invention〕

In order to connect the J wheel axle to the axle end, a movable connecting plate is provided between them, so that the connecting plate can be moved in a relatively short distance to engage or release the coupling device. That's enough. This is because the teeth remaining between the end pawl and the peripheral recess of the connecting plate can be made sufficiently strong to avoid excessive surface pressure. This small coupling plate travel allows the pin to be retracted in a single step, and the eccentric is accommodated in the cap nut to save space. , qs The manual bending piece that turns the core wheel reduces the manual force that has to be applied when switching connections to a minimum value. Since the spring applies a load to the connecting plate in the direction of engagement, the rotational positions of the connecting plate and the end pawl do not necessarily need to be precisely aligned during connection, and in that case only the spring is subjected to a preload amount. When these parts are subsequently turned, automatic locking takes place under the action of the spring.

In order to prevent the eccentric wheel from rotating by itself during operation, the manual bending piece is provided with elastic stopper bending pieces that engage into the notches of the cap nuts at the two end positions of the manual bending piece. It can also be used as a turning handle.

In any case, since driving only one-sided condensation by the existing drive axle significantly deteriorates driving safety, it is natural that both wheels of the drive axle must always be connected or disconnected from the wheel drive axle. . According to the invention, therefore, the coupling plates of both wheels of the drive axle are each equipped with a switch, preferably a microswitch, which can be operated by the coupling plates, and the common current circuit of these switches is equipped with a signal generator or an ignition current interrupter. can be operated when there is a device and the positions of both separation and connection devices are not the same. Microswitches have the advantage that they require relatively low operating forces.

〔Example〕

An embodiment of the invention is shown in the drawing.

The motor vehicle has two drive axles, the wheel drive axle l of both drive axles is permanently driven together with the other drive axle, but both wheels of both drive axles are individually driven from the wheel drive axle l. It can be layered or connected thereto.

According to FIG. 1, the shaft end 3 holding the wheel 2 of the wheel drive shaft I, like the wheel drive shaft 1 itself, has end faces 4, 5 facing each other, and between these end faces 4, 5, is spring 6
A connecting plate 7 that receives a load is movably supported and has a rounded recess 8 (FIG. 3) corresponding to the end winds 4 and 5. In FIG. 1, the separating coupling device formed by the end faces 4, 5 and the coupling plate 7 is shown in the disengaged state, with the pin 9 movably supported in the shaft end 3 being moved under the force of the spring 6. , is acting on the connecting plate 7 against the force. The shaft 11 of the eccentric 1G supporting the other end of the pin 9 is supported in a cap nut 12 screwed onto the shaft end 3 at right angles to the axial direction of the pin 9 or the shaft end 3. The eccentric shaft II has an elastic stopper with a curved surface piece 54.
It can be turned by a manual bending piece 13 having a handle. Stop curved piece 1
4 engages with the notch 15 of the cap nut 12 at both end positions of the manual bending piece 13.

According to FIG. 4, switches 16 are attached to the connecting plates 7 of both wheels 2 of the drive axle, and can be operated from the connecting plates &5. In the common current circuit of both switches 16 there is a signal generator I7 and a relay 18, which actuates a switch 19 in the ignition current circuit of the engine of the motor vehicle. Both connecting plates 7 are in the disengaged position shown in FIG.
2), the current circuit is cut off and neither the signal generator 17 nor the relay 18 is supplied with power. Even when both connecting plates 7 are in the locking position and therefore both wheels are connected to the wheel drive shaft 1, the switch on both sides! Since the current circuit is interrupted via the upper fixed contact of 6, the power supply is not carried out in the same way, but both connecting plates 7 take a different position from the other connecting plate, and both connecting plates 7 When the switch 16 makes the contact connection, a signal is generated by the signal generator 17, which energizes the relay 18 and interrupts the ignition current circuit by the switch 19, so that only one wheel is activated on both drive axles. Drive-driven travel is prevented in any case.

Of course the signal generator 17 or the ignition current interrupter 18.19
It is also possible to provide only one.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view along the axis of the wheel range of the drive axle of the automobile, Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1, Fig. 3 is a front view of the connecting plate, and Fig. 4 is the drive FIG. 3 is a connection diagram of a current circuit which generates an alarm if both l wheels of an axle are not in the same coupling position; ! ...Wheel drive shaft, 2...Wheel, 4, 5...End face wind, 6...Spring, 7...Connection plate, 8...Surrounding recess, 9...Pin, lO ... Eccentric wheel, 11 ... Eccentric wheel shaft, 12 ... Cap nut FIG, 4

Claims (1)

[Claims] 1. A separation and coupling device in which the shaft end of a wheel drive shaft that holds the wheels of an automobile having at least two drive axles is operable by a pin that receives a spring load and is movably supported on the shaft end. in which the wheel drive shaft (1) and the shaft end (3) each have end pawls (5, 4) facing each other, and the end pawls (4, 5)
) is provided with a connecting plate (7) having a peripheral recess (8) corresponding to the connecting plate (7), movable in the axial direction and receiving the load of the spring (6) in the engagement direction, and a pin (9) attached to the connecting plate (7). An eccentric wheel shaft (11) extending perpendicularly to the wheel axis is supported in a cap nut (12) which is screwed onto the shaft end (3); ) to the pin (9
), and the eccentric wheel shaft (11) is rotatable by means of a manual bending piece (13) swingable around a cap nut (12). Device to connect. 2 At the two end positions of the manual bending piece (13), tighten the cap nuts (
The elastic stopper curved piece (12) engages with the notch (15) of the
2. Device according to claim 1, characterized in that 4) is supported on a manual bending piece (13). 3. The connecting plates (7) of both wheels (2) of the drive axle are each equipped with a switch (16) that can be operated by the connecting plate (7), and a signal generator (17) is connected to the common current circuit of these switches. 2. Device according to claim 1, characterized in that there is an ignition current interrupter (18, 19) or an ignition current interrupter (18, 19) which can be operated when the positions of the two separating coupling devices are not the same.