JPS61157440A - Vehicle transfer device - Google Patents

Abstract

PURPOSE:To make it possible to control the shift operation of a gear with the use of a single change lever which arculately moves in a small range, by providing a shift cam having two cam sections of an elong-aged cam groove and an outer peripheral concave and convex section, on a shift cam shaft. CONSTITUTION:A shift cam shaft 40 is coupled with a change lever arm 41 rotatably supported to a transfer casing 10. Meanwhile a shift cam 42 formed therein with an elongaged cam hole 43 and an outer peripheral concave and convex section 44 is fitted on the shaft end section of the casing 10. Further, four positioning recesses 45 are formed along an arc having, as a center point, the center of the shaft 40 in a part of the outer peripheral section. A first cam pin 46 makes in contact with the outer peripheral concave and convex section 44, and a second cam pin 51 is fitted in the elongated cam hole 43 to rotate the shift cam 42. Further, positioning pins 55 are fitted in the four positioning recesses 45 so that either one of four positioning ways may be taken in accordance with the individual movements of first and second clutch sleeves 24, 25.

Description

[Detailed Description of the Invention] (J! Field of Industrial Application) This invention utilizes a cam to shift the power of a transfer device connected to the output side of a transmission of a four-wheel drive vehicle. The present invention relates to a transfer device for a vehicle in which a single shift camshaft is rotated to perform an extended movement.

(Prior art) Conventionally, this polar transfer device generally has two wheels (rear wheels).
High speed, 4-wheel high speed, 4-wheel low speed (hereinafter class C2)
M, , 4HsM, 4Xs). To perform this shift, two gears with internal teeth are used to engage an external clutch provided in a series of constant mesh gear trains. It is equipped with two shift forks that move the clutch sleeve, and there were models that were equipped with two change levers on the driver's seat to operate the two shift forks, but recently they have only one change lever. [Things that move in a plum-like manner, and those that move vertically and horizontally, such as H-shape, 5-shape, and ■-shape, are often used. - (Issues on which the invention fee is to be determined) In the case of a device that uses two change levers, there is a separate change lever for the transmission pre-transmission in the driver's seat, so there are a total of 8 change levers.
It becomes a change lever for books, is difficult to operate, easy to get lost, takes up space, and is large in size. In addition, the range of movement of change levers that can be moved vertically and horizontally, such as those that move vertically or horizontally, such as H-shape change levers, is wider, just like transmission change levers, and those that can be moved directly have a longer moving distance, making it difficult to operate them in a cramped driver's seat. There was a problem with my sexuality.

Therefore, it is an object of the present invention to solve the above-mentioned conventional problems, improve operability, and make it possible to make the device more compact.

(Means for solving the interlayer point) In order to achieve such an object, the present invention provides a transfer device connected to the output side of the transmission of a four-wheel drive vehicle, in which the power transmission is reduced by 2H, 41%. 11
A shift cam having two cam operating parts, a 1-cam long hole or cam groove and a concave and convex portion on the outer periphery, is attached to the shift cam shaft attached to the transformer 7a case for performing the four-way shifting of %41. The base end of the first cam arm, which has a first cam pin in contact with the outer periphery unevenness at the tip, is connected to the input shaft and the first output shaft (rear wheel 41), which are on the same axis.
The shift rod is fixed to a shift rod slidably supported on the transformer 7a case parallel to the # side), and this shift rod is biased by a spring from one end in the direction of pressing the first cam pin against the uneven portion of the outer circumference of the shift cam. , a $1 shift 7 oak is attached to operate the first clutch sleeve of two clutch sleeves having internal teeth to be engaged with the external toothed clutch provided in the steady mesh gear train, while the cam elongated hole , or a second part that fits into the cam groove.
Base end of second cam arm with cam pin attached to the tip
A cylindrical portion 11 is slidably fitted onto the shift rod, and a second shift fork for operating a second clutch sleeve of the two clutch sleeves is protruded from the base end cylindrical portion, and a shift cam is fitted onto the shift rod. Four positioning recesses for determining the four shift positions described above are provided on a part of the outer periphery of the transformer 7, and the tip of the positioning pin, which is fitted into the transformer 7 annular and is urged in the protruding direction by the positioning spring, is placed in the four positioning parts. This is a vehicular transfer device configured to fit and position.

・(Function) The device of the present invention having the above configuration moves the two clutch sleeves incorporated in the steady mesh gear train of the transfer, which shifts power in four ways: 2Hs, 4HN, Ms, and 4L in response to the output from the transmission. to directly transmit the rotation of the input shaft to the first output shaft (rear wheel side) (2H)
, rotate the first output shaft and the second output shaft (front wheel side) at high speed (4H), cut off the rotation of the output shaft (stop the rotation), or rotate the first output shaft and the second output shaft at a sluggish speed (4H). 4L), the shift cam attached to the shift cam shaft rotates @J by the change lever rotation operation in conjunction with the driver's + engine A shift rod fixed to the proximal end of the first cam arm slides in the axial direction, and a first shift fork attached to the shift rod moves the first clutch sleeve to return the shift cam to its old position. Or stop at a convex position.

Also, as the shift cam rotates, the second cam pin fitted into the groove of the long hole gusset of the shift cam changes its position along the long hole or groove, and connects to the needle shift rod of the proximal cylindrical part of the second cam. By sliding along and changing the position,
The second shift fork moves the second clutch sleeve. In this way, the shift cam is rotated, and the positioning pins fit into the four positioning recesses of the shift cam, resulting in the above-mentioned 2H%
Four types of positioning, 4HSM and 4TJ, are performed by separate movements of the first clutch sleeve and the second clutch sleeve.

(Example) A preferred embodiment will be described below based on the drawings.

First, the configuration of the transfer device will be explained with reference to FIG.

The transmission is a 7-case transformer, and the left end in Figure 1 is connected to the transmission.

(B) is the input shaft, which is supported by the transformer 7 annular (IQ) by the bearing (B) (, 12a).
The first external tooth clutch 4 is connected to the output shaft of the transmission with one end protruding from the connection side of the case CLQ to the transmission, and the end of the case CLQ in the transformer 77 is formed into a brim shape and external teeth are carved on the outer periphery. It consists of

C14 is the 01st output shaft, which connects the propeller shaft in the direction of arrow a to drive the rear wheels, and transfer teeth uQ.
is supported by a bearing (g) and a needle bearing, and one end is inserted into the hollow part of the input shaft (6) and supported by a needle bearing αη so that the fineness coincides with the fineness of the input shaft. The first input shaft (6)
A collar is formed at a position adjacent to the external tooth clutch 0, and the same external teeth as the first external tooth clutch 4 are formed on the outer periphery; a carved second external tooth clutch (7) is formed. 0 α9 is a low speed drive gear The first external tooth clutch is rotatably mounted on the input shaft (6) in one stage, and the first external tooth clutch of the low speed drive gear C1l has a surface groove of 11 m.
〇4, which integrally forms the same external clutch as the first external tooth clutch (e), is a high-speed drive gear, which is connected to the first output shaft (on 141). A fourth external tooth clutch (2) is rotatably mounted adjacent to the second external tooth clutch (G) and has external teeth on the - side. With the tooth clutch, the fourth external tooth clutch (
2) Cut out the same external tooth ζ and make this fourth external tooth clutch (2
), and then the first output shaft σ◆ is fitted with a spline to stop rotation.
28JL) is incorporated into the first clutch sleeve, which has internal teeth cut into it and slidably engages with the external teeth of the fourth external tooth clutch and the fifth external tooth clutch, A groove is formed on the outer periphery into which the first shift fork group (to be described later) is fitted. (7) is a second clutch sleeve, which has internal teeth cut into it and connects the first external tooth clutch and the second external tooth clutch ( (g) and the external teeth of the eighth external tooth clutch 4, and a groove is formed on the outer periphery into which a second shift fork (to be described later) is fitted.

(7) is a large-diameter intermediate gear, and (A) is a small-diameter intermediate gear. Both are integrally constructed and rotatably supported by an intermediate shaft fixed to the transformer 7 case. The gear (E) is always meshed with the low speed drive gear Q9, and the small diameter intermediate gear is always meshed with the high speed drive gear (B).

4 is the second output shaft, which transmits power to the front wheels in the direction of the b arrow.
A front wheel drive gear gυ is integrally provided with the second output shaft 4, and is always in mesh with the small diameter intermediate gear (2).

Next, the configuration of the "power shift device" which is the main part of the present application will be explained.

(7) is the shift cam shaft, which is rotatably supported by the protruding boss (10 m) of the transformer 7 case α0.
A change arm gear connected to the change lever (not shown) of the slow-moving seat is attached to the shaft end protruding from the outer end of the trans. This shift cam is provided with a cam elongated hole and a concave and convex portion on the outer periphery, as well as four positioning recesses arranged on a bar arc centered on the center of the shift cam shaft. It is.

- is a first cam pin, which is completely attached to the first cam arm @η and is in contact with the uneven outer circumferential portion of the shift camshaft. The base end of the first cam arm 4 is parallel to the input shaft (B) and the first output shaft CA which are on the same axis.
It is fixed to a shift rod that is slidably supported on the transfer case 4, and this shift cylinder is moved in the direction that presses the first cam pin against the outer periphery unevenness (Figs. 8 to 6).
(leftward in the figure) from the left end by a spring 4.

The wheel is attached to the shift rod (with a first shift fork), and has a semicircular arc-shaped portion fitted into a groove in the first clutch sleeve.

The second cam pin is attached to the tip of the second cam arm ring, and fits into the cam elongated hole of the shift cam, and the second cam pin is attached to the tip of the second cam arm ring. A ring is fitted into the shift rod skin so that the ring can be freely moved, and a second shift fork is provided protruding from the base end of the cylindrical portion, and a semicircular-arc-shaped seven oval ring is fitted into the groove of the second shift rod. The lock part is fitted.

A positioning pin (2) is fitted into the transformer 77 case 4 and urged in the protruding direction from the rear end by a positioning spring 4, and its tip fits into the positioning recess of the shift cam to position the shift cam 4.

In the above configuration, the state shown in Fig. 1 shows the 2H, that is, the high speed state of the two wheels (rear wheels) shown in the skeleton diagram in Fig. 7, and the second clutch sleeve) is connected to the first external tooth clutch (2). is engaged with the second external tooth clutch (to), and the rotation of the input shaft (b) is directly transmitted to the rear wheels with the input shaft 4 and the first output shaft α◆ directly connected. At this time The first clutch sleeve ■ is the first output 1id (14
It engages only the fourth external tooth clutch (2) that is integrated with the high-speed drive gear (2) that is loosely fitted in
Since the eighth external tooth clutch 4, which is integrated with the low-speed drive gear 4 that is loosely fitted to the input shaft qυ, is not engaged with the second clutch sleeve (2), all the gear trains that are in constant mesh do not rotate. Since the rotation is not transmitted to the second output shaft 4, the front wheels are not driven.

At this time, the power shift device is in the state shown in Fig. 8, the first cam pin is in the concave part of the shift cam 4/outer circumference uneven part, and the first shift fork stage is shifted to the left and the first clutch is engaged. As shown in FIGS. 1 and 7, the sleeve is located on the fourth external tooth clutch (2), and the second cam pin is located at the farthest position from the shift cam shaft in the cam elongated hole. Yes, therefore 1) 2nd shift 7 orcs (goods)
is located at the far right position and is located on the second leg sleeve (2).
As shown in FIGS. 1 and 7, 2H is engaged across the first external tooth crutch and the second external tooth.
The state will be as follows.

Next, rotate the change arm and move the shift cam to 84
When the state shown in the figure is set, the first cam pin is controlled by the shift cam.
Because the first shift rod is pushed to the right against the spring 4 by being pushed up by the convex part of the outer periphery of the convex part, the first shift fork control is moved to the right and the first clutch sleeve is pushed up.
is engaged across the fourth external tooth clutch (2) and the fifth external tooth clutch (to) shown in FIG.
On the other hand, the second cam pin Iη does not move because the cam elongated hole is located at the same distance from the center of the shift cam shaft wheel as in the state shown in Figure 3.
Therefore, as in Fig. 1 and Fig. 7, the second clutch sleeve) has a first external tooth clutch □, a second external tooth clutch (G) tooth clutch @1 high-speed drive gear (2), a small diameter intermediate gear @, and a front wheel. The rotation is transmitted to the second output shaft 4 via the drive gear 0υ, forming a 4H, ie, four-wheel drive system.

At this time, when the high-speed drive gear, front wheel drive gear, and change arm 4 are rotated to bring the shift cam into the state shown in Figure 5, the first cam pin again fits into the concave part of the outer periphery of the shift cam. Therefore, the shift lever is pushed to the left by the spring, and the Shift 7 oak) and the first clutch sleeve (to) are in the state shown in Figure 9, which is the same as in Figures 1 and 7. , the first output shaft α◆ and the high-speed drive gear (2) are disengaged and become unrelated, while the second cam pin υ is guided by the cam groove ring and moves slightly to the left, causing the second shift fork to become threatened. The second clutch sleeve (7) is connected to the first external tooth clutch as shown in FIG.
Since the input shaft (B) is disengaged from the second external tooth clutch (G), the rotation of the input shaft (B) is at the angle of the first output axis α, t42.
The signal is not transmitted to any of the four output shafts and is in a neutral state.

Next, when the change arm is rotated to bring the shift cam (6) into the state shown in Fig. 6, the first cam pin is again pushed up by the convex part of the outer circumference of the shift cam, and the shift rod is held by the spring. In order to resist and push to the right, the first shift fork moves to the right like the 4th FA, and as shown in Fig. 10, the first clutch sleeve (C) moves between the 4th external toothed clutch 4 and the 5th external toothed clutch. The second cam pin 6υ is guided through the cam elongated hole and is located most to the left, and the second The shift fork engages the second clutch sleeve) across the first external tooth clutch 4 and the eighth external tooth clutch (7), and rotates the first human power shaft (6) with the eighth external tooth clutch. The integrated small-diameter low-speed drive gear σY, large-diameter intermediate gear (E), and small-diameter intermediate gear (F) are transmitted by diameter to the front wheel drive gear 0η to rotate the second output shaft 4, and then the small-diameter Rotate the first output shaft α with the diameter of the intermediate gear (b), the high speed drive gear 3υ, the fourth external tooth clutch 4, the first clutch sleeve, and the fifth external tooth clutch 4L, that is, the front wheel. The four rear wheels are driven at low speed. At this time, the deceleration is from the small diameter sluggish gear (7) to the large diameter intermediate gear (7). So, N is shown in Figures 5 and 9, and 4- is shown in Figures 6 and 10,
Each was explained.

This embodiment shows a preferable example of the present invention, but the main points of the present invention are as follows: 1. By rotating the shift cam of 111i, two different shift operations are performed at the same time; The detailed structure can be implemented using means other than those shown.

(Effects of the Invention) With the configuration described above, the present invention allows the shift operation to be performed by a change lever that moves in a small arc shape, making the operation simple and easy to understand.1. In addition, the gear relation of the transfer device for transmitting power and the shift 8IA monument can be simplified and assembled into a single package, which has the effect of facilitating the design of the vehicle.

[Brief explanation of the drawing]

The drawing is a diagram showing one embodiment of the vehicle transfer device of the present invention.
Viewed from the direction of the arrow, a side view of the main part cut at BB'1ml [Figures 8, 4, 5, and 6 are from Figure 2 in the 0-0/direction. Figure 8 shows 2 wheels (rear wheels) at high speed, Figure 4 shows 4 wheels (front and rear wheels) at high speed, Figure 5 shows neutral, and Figure 6 shows the partially cut away side view of the shift device. Figures 7, 8, 9, and 10 show four-wheel low-speed conditions.
The figure shows the conduction relationship shown in Figure 1 in a skeleton diagram for each of the four shift states, and Figure 7 shows the same 2-(
Rear wheels) High speed, Figure 8 shows 4 wheels (Front and rear wheels: High speed, Figure 9
The figure shows a neutral state, and FIG. 10 shows a four-wheel low speed state. α9...Transfer case (6)...Input shaft--
・1st external tooth clutch α arrogance... 1st output shaft (G)・
・Second external tooth clutch α1...Low speed drive gear
(B)...8th external tooth clutch (Foundation)...High speed drive gear 4...4th external tooth clutch Storage...5th external tooth clutch (Foundation)...1st clutch sleeve (E)...2nd Clutch sleeve (7)...Large diameter intermediate gear ■...Small diameter intermediate gear (7)...Intermediate shaft 4...Second output shaft Qυ...Front wheel drive gear ■...
・Shift cam 4IIl@υe11 change arm −
・Tatami shift cam −・・Cam long hole −・・Outer periphery unevenness −・・1st cam pin iη・・1st cam arm (g) Working・Shift rod −・・Spring
Wheel: 1st shift fork (2) 2nd cam pin W--2nd cam arm (to): Base end cylindrical part
---Second shift fork patent Applicant: Kanda Iron Works Co., Ltd. Patent attorney Takashi Mihara (1 other person) Figure 2 Figure 3 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Drawing procedure amendment (spontaneous) April 9, 1985 Patent Application No. 27?727 2, title of invention Single m transfer mount 3, relationship with the case of the person making the amendment Patent applicant 8, Contents of the amendment ■ On page 2, line 15 of the specification, "--way" is corrected to "series." ■Correct the phrase "on the same axis" on page 10, line 14 of the specification to "on the same line." ■The “left end” on page 10, line 19 of the specification and the “right end”
Correct to. ■Correct "Kagai" on the 4th line of page 12 of the specification to "Hoai". that's all

Claims (1)

[Claims] In a transfer device connected to the output side of a transmission of a four-wheel drive vehicle, a shift cam having two cam operating parts: a cam elongated hole or cam groove and an uneven portion on the outer periphery is attached to the shift cam shaft. The base end of the first cam arm, which has a first cam pin in contact with the uneven portion at the tip, is fixed to a shift rod that is slidably provided parallel to the input shaft and output shaft, which are on the same axis, and this shift rod is biased by a spring in the direction of pressing the first cam pin against the outer circumferential uneven portion of the shift cam, and the first shift fork is attached;
The base end cylindrical part of the second cam arm, which has a second cam pin fitted to the tip that fits into the cam elongated hole or cam groove, is slidably fitted into the shift rod, and a second shift fork is attached to the base end cylindrical part. A transfer device for a vehicle, characterized in that it has a protruding structure.