JPS616448A - Transfer controlling apparatus for car - Google Patents

Abstract

PURPOSE:To permit the smooth and stable transfer switching operation by switching the transfer to an arbitrary position by operating a control lever in one direction. CONSTITUTION:A high/low switching shift fork 30 is fixed onto a first sleeve 31, and the free edge is engaged with a high/low switching sleeve 2a, and a first large diameter cylinder part 33 into which the first sleeve 31 can be inserted is installed onto a first shift head 32, and a first interlocking means 5 is installed. A second sleeve 41 supporting in slidable ways a 2/4-wheel switching shift fork 40 for selecting two-wheel drive and four-wheel drive and a second slidable head 42 are supported in slidable ways onto a second shaft 4. A second interlocking means 6 for cutting-off the interlocking with the second sleeve 41 by a certain amount of shift of the second slidable head 42 is arranged.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a shift forer for high/low switching that selects between high gear and low gear, and a shift forer for switching between two and four wheels that selects between two-wheel drive and four-wheel drive. The present invention relates to a transfer control device for an automobile equipped with a fork.

(Prior Art) Generally, this type of control device includes a high-low switching/shift make and a shift fork for 2.4-wheel switching in a transfer case, and by sliding each of these shift forks individually, the transfer can be adjusted, for example. 2H14
It is easy to switch to 4 stages: H, N14L.

By the way, since an automobile equipped with a transfer has a transfer control lever as well as a control lever for the transfer, it is necessary to ensure that the operating areas of these two levers do not overlap.

Therefore, conventionally, as shown in Japanese Unexamined Patent Publication No. 58-128928, a cam body has been used to switch the transfer to an arbitrary position by operating the control lever in one direction. A control device has been developed.

(Problems to be Solved by the Invention) However, according to the above control device, it is difficult and time-consuming to manufacture the cam body, and furthermore, if the cam body wears out with use, the control device There was also a risk that the system might not operate smoothly.

Also, for example, when driving in 4-wheel drive mode, if there is a difference between the rotation speed of the front wheels and the rotation speed of the rear wheels and the 2.4-wheel switching sleeve becomes locked, it may be difficult to operate the control lever. There was also the problem of becoming.

(Means for Solving the Problems) In order to solve the above problems, the present invention fixes a first shaft and a second shaft in parallel within a transfer case, and has a A first sleeve having a seven-foot fork for high-low switching for selecting a high gear and a low gear and a first shift head are slidably supported, and the first sleeve and the seventeenth foot fork are connected to the first shift head. is interlocked by a first interlocking means that allows the first sleeve to move freely within a certain range, and the second shaft is provided with two-wheel drive and four-wheel drive.
Wheel drive and select 2 4 switching river make (-
The second sleeve, the second sleeve, and the second sleeve are movably supported.
The second sleeve and the second shift head are interlocked by a second interlocking means that supports the shift head in a freely sliding manner, and interlocks or disconnects the second sleeve and the second shift head by a movement of the second noft head beyond a certain level, and For four-wheel switching/A spring is interposed between the foot make and the second sleeve, and the foot make is moved by the second sleeve through the spring. Between the two knots and the throat, a freher was inserted to reversibly slide the do into each of these knots.

(Function) However, according to the present invention, even after long-term use,
, ll' The control lever is operated in one direction smoothly and without any malfunction, and the transfer is carried out.
/ Yono.

(Embodiments) The present invention will be described below with reference to embodiments shown in the drawings.

The transfer shown in the drawing is a center-through type, and (1) in the drawing is the transfer case.
Inside the Ranos Far Case (1) are I/P and Tongyaft (11) extending from T/M.
a rear output shaft (12) extending coaxially with the input/yant (11);
11) (Kaunotanyahu placed parallel to (+2))・
(13) Front out to nu]・(14
) and are mounted on shafts that can rotate freely.

The impnoton shaft (11) rotatably supports a large diameter drive gear (15), and also supports a large diameter drive gear (15).
5) and the rear output/safety) (12) are integrally formed with a rear, a rear gear (1'5a) and (12a), respectively.

Also, on the shaft end of the Impnoton Yaft (11) described in 11ii,
The input gear (16) co-rotates with the Noyaft (11).
), a high-low switching sleeve (2a) is movably supported in the axial direction (only in the axial direction), and the sleeve (2a) is connected to the clutch gear (15a).
'(12a).

The above-mentioned force/tanoyafut (13) has 1 at one end.
A small-diameter counter gear (13a) that meshes with the large-diameter drive gear 15) is attached to the other end of the large-diameter drive gear (13).
1) ), while this large diameter counter gear (13b) is connected to the rear outboard shaft (12).
The driven gear (17) is supported to rotate freely.

It's set.

In addition, the above-mentioned Ryaoutpunotongyaft (12) includes the /
Outpu° and Togya (18) co-operating with Yaft (12)
), and a 2° four-wheel switching sleeve (2
b) is supported so as to be movable only in the axial direction.

On the other hand, the 2.4-wheel switching sleeve (2) is attached to one end of the driven gear (17) on the output gear (18) side.
b) is provided with a clutch gear (17a) that engages;
A sprocket 7) (17) is attached to the other end of the driven gear (17).
b), and this sprocket (17b) and a sprocket (14b) provided at the shaft end of the front outp and shaft (14) are interlocked and connected via a chino (18).

In the second configuration, the high-low switching sleeve (2
By moving a), the gear can be switched to high gear, low gear, or neutral. Specifically, by moving the high-low switching sleeve (2a) to the right in FIG. 1, the sleeve (2a) can be switched to the input gear ( 16
) and the clutch gear (12a) of the rear output shaft (12) to switch to a high gear, and the high-low switching sleeve (2a)
By moving the sleeve (2a) to the left in FIG. , the second impeller of the high-low switching sleeve (2a) is switched to low gear;
The gear can be switched to neutral by engaging only the toggle (6).

[1; By engaging the clutch gear (17a) provided in the driven gear (17) with the clutch gear (18) and the clutch gear (17a) provided in the driven gear (17), the switching to four-wheel drive is performed. By releasing it, you can switch to two-wheel drive.

In the transfer configured as described above, a shaft (3) is provided in the transfer case (1) and extends in the same axial direction as the input shaft (11), as shown in FIG. 2 and FIG. A second shaft (4) is separated from the second shaft (4) by a predetermined distance and mounted in a parallel manner so as to be non-rotatable and non-movable in the axial direction. 1 sleeve (31) and the first
A first noft λ and a noft (32) formed separately from the sleeve (31) are slidably supported in the axial direction, and the first sleeve (31) and the first foot (32) are To the first software, either the do (32) or the first sleeve (31
) by a first interlocking means (5) that allows free movement within a certain range.

That is, in the embodiment shown in the figures, the high-low switching shaft (30) is fixed to the first sleeve (31) and its free end is engaged with the high-low switching sleeve (2a). On the other hand, a first large diameter cylindrical portion (3) into which the first sleeve (31) can be inserted is inserted into the first shift head (32).
3), and the large-diameter cylindrical portion (33) and the first sleeve (31),! The first interlocking means (5
We have established a

The first interlocking means (5) changes from a high gear 2-wheel drive position (hereinafter referred to as 2H position) to a high gear 4-wheel drive position.
When shifting to the wheel drive position (hereinafter referred to as 4H position) or 4H position or 2H position,
Only the first shift head (32) moves, and during other shift operations, the first sleeve (31) is moved to the first shift head (32).
It is designed to be interlocked and connected to the shift-\end (32), and specifically, the first sleeve (3
1) through the first through hole (51) through which the tenth ball (5o) passes.
), and the first shaft (3) has a first through hole (51) facing the first through hole (51) when the high/low switching shift fork (30) is located in the high gear/foot position. The first fitting groove (52) receives the lock ball (50).
) is formed.

The first shift head (32) is provided with a first shift head (32) in accordance with the shift operation from 2H position to 4H position.
A first abutment (53) that abuts the end face of the sleeve (31)
On the inner circumferential surface of the first large-diameter cylindrical portion (33), there is also a tenth screw ball (50) that faces the first through hole (51) during a shift operation to the 4H position.
The first four locations (54°) are set up to accept. Further, the '2nd axis (4) selects between two-wheel drive and four-wheel drive;
A second sleeve (41) that slidably supports a four-wheel switching shift fork (40) and a second sliding head (42) that is formed separately from the second sleeve (41) are slid together. These second sleeves (41) and
The shift head (42) is connected to the second shift head (42).
) are interlocked by a second interlocking means (6) which interrupts the interlocking of both (41) and (42) by moving them from a certain position.

That is, in the embodiment shown in the figure, the shift fork (40) for switching 2 and 4 wheels is supported by the second sleeve (41) so as to be slidable in the axial direction, and its free end is connected to the sleeve for switching 2 and 4 wheels. (2b), and between one axial end of the shift fork (40) for switching between two and four wheels as described in Tl1i and the step (41a) provided on the second sleeve (41), and the /ft make. The spring (40a) (which constitutes a holding mechanism between the other axial end of the spring (40) and the retaining ring (4lb) fitted to the second sleeve (41))
40b), and both springs (40a) (,
40b) to elastically hold the lift makeup (40) in a predetermined position relative to the second sleeve (41).

Further, the second interlocking means (6) is connected to the first interlocking means (5).
), the second sleeve (41) is interlocked and connected to the second shift head (42) during a shift operation from 2H position to 4H position, or from 4H position to 2H position. tff
i operation, i.e. from 4H position to neutral position to 4L position (4 wheel drive position with low gear)
During a soft operation to 4L position or a shift operation from 4L position to neutral position to 4H position/position, only the second shift head (42) is moved. (4
1) through the second through hole (61) through which the 20th ball (60) passes.
), while the second shaft (4) has the 2, 4
When the wheel switching shift fork (40) is located in the four-wheel drive position, the second through hole (61) & the 20th
A second fitting groove (62) is formed to receive the disk ball (60).

The second shift head (42) is provided with a second contact surface (63) that comes into contact with the end surface of the second sleeve (41) during a shift operation from the neutral position to the 4H position. A second large-diameter cylinder part (43) into which the second sleeve (41) can be inserted is connected to the second shift head (42), and a second large-diameter cylinder part (43) is provided with a , Similarly, during the shift operation to the 4H position, the 20th Tsukubaru (
A second recess (64) is provided for receiving the second recess (60).

On the other hand, the operation shaft (70) is attached to the transfer case (1).
) with a shift lever (7) at its lower end.
and a first engagement groove (34) provided in the first foot head (32) with one end of the foot lever (7).
and a second end provided at the second noft (42) with the other end connected to the second noft.
The shift lever (
7), each of the shift heads (32) and (42)
It is designed to slide reversibly.

Also, an arm (71) is fixed to the upper end of the operating shaft (70), and this arm (71) and a control lever (8,) arranged in the vehicle interior. = Interlocked and connected by a pull cable (80), and when the control lever (8) is operated in one direction, the /ft lever (7)
It is made to rotate.

In the figure, (45) is a rotation prevention pier of the second shift head (42), (10a) and (10b) are stoppers that restrict the sliding range of the high-low switching shift fork (30), and (10c) and (10d). ) indicates a stopper that restricts the sliding range of the shift make (40) for switching between 2 and 4 wheels.

Next, the operation of the control device having the above configuration will be explained.

FIGS. 1 and 3 show a state in which the lift roll lever (8) is shifted to the 2H position, and at this time, the grip (32) to the first lift is for the time being (
53) is separated from the end face of the first sleeve (31) and constitutes the first interlocking means (5).
0) is located across the first through hole (51) and the first fitting groove (52), and therefore only the first shift knob (32) is free to slide with respect to the first shaft (3). On the other hand, a 20th coupling ball (60) constituting the second interlocking means (6)
is located across the second through hole (61) and the second recess (64), so that the second hole (42) and the second three''j-(41) to 2.4 flexible soft make. (4
o) and can freely slide on the second shaft (4).

At this time, the high-low switching sleeve (2a) is engaged with the input gear (16) and the clutch gear (12a) of the rear output shaft (12) via the high-low switching soft make (30). On the other hand, the 2.4-wheel switching sleeve (2b) meshes only with the output gear (18) via the 2.4-wheel cutting/futofmake (4o), so the Trans Mitsuno, 47 via To/Yaft (11)
(T/M) The power that is manually applied is transmitted only to the rear wheels in high gear.

When the control lever (8) is operated from this 4J jQ position to the 4H position shown by the imaginary line in FIG. 3, the shift lever (7) is moved counterclockwise from the position in FIG. It only rotates by the angle,
As the shift lever (7) rotates, the first lift head (32) moves a predetermined stroke leftward from the position shown in FIG. 3, and as shown in FIG.
abuts against the end surface of the sleeve (31) and is in contact with the first recess (54).
) faces the first through hole (51).

On the other hand, the second shift head (42) and the second sleeve (41) are interlocked and connected via the second interlocking means (6).
) to 2. The shift fork (40) for four-wheel switching moves a predetermined stroke to the right in the position in Figure 3 until it reaches the stopper (10).
c) At the same time, the second through hole (61) and the second fitting groove (43) face each other (see Fig. 4).

As the shift fork (40) for switching two and four wheels moves, the sleeve (2b) for switching two and four wheels moves to the right in FIG. It engages with the provided clutch gear (17a), resulting in four-wheel drive in high gear.

Then press +i'+ and set the control lever (8) to neutral.
Furthermore, it rotates by an angle of r) in the counter-0h direction from the position shown in FIG. The ball (50) separates from the first fitting groove (52) and connects the first through hole (51) to the first fitting groove (52).
In order to fit into the recess (54) and connect the first sleeve (31) to the first noft (32), the first sleeve (31) and the high/low switching fork (3)
0) is also moved by a predetermined stroke to the left from the position shown in FIG. 4 via the first shift head (32).

As the high-low switching noft make (30) moves, the high-low switching sleeve (2a) moves leftward in FIG. 1 and engages only with the inner and outer gears (16), resulting in a neutral state. On the other hand, at this time, the second knob 1' (42) moves a predetermined stroke in the right direction from the position shown in FIG.
．． The soft makeup (40) for 4-wheel switching is a strike.

contacting the par (10a), and the 20th Tsuku ball (
60) separates from the second recess (64) and enters +iii No. 2.
Through hole (61) to second fitting i7/; 11 to (62-)
5, the second sleeve (41) and the second shift head (42) are disengaged from each other, and therefore the second shift head (42)
The sleeve (41) does not move.

When the control lever (8) is shifted to the 4L position, the control lever (7) is further rotated by a predetermined angle counterclockwise from the position shown in FIG.
As the shaft (7) rotates, the first shaft 1
- The head (32) and the first sleeve (31) or the high/low switching noft fork (30) which are interlocked and connected with the first noft head (32) are moved by a predetermined stroke to the left from the position shown in FIG. , Due to the movement of the upper/lower switching foot fork (40), the lower/lower switching sleeve (2a) further moves to the left in FIG. 1, and the clutch gear (15a) of the large diameter drive gear (15) and the input gear (16).

Therefore, the power input manually through the input shaft (11) is outputted to the front and rear wheels from the rear output shaft (12) and the front output shaft (14), resulting in four-wheel drive in low gear.

Next, to switch from 4-wheel drive in low gear to neutral, it is enough to shift the control lever (8) 7 feet to neutral, and by shifting the lever (8) to the neutral position, shift to 1); , the door (7) rotates by a predetermined angle in the force direction from the position shown in FIG. ) moves to the left in FIG. 6, and at the same time, the first
Sleeve (31) to high/low switching JIj 771/7
t-ri (30) moves a predetermined stroke to the right from the position shown in FIG. 6, and thereby the high-low switching sleeve (2a) moves to the right in FIG. They mesh, resulting in the above-mentioned I+<neutral state.

The same applies when switching from neutral to high gear 4-wheel drive; by shifting the control lever (8) to the 4'L position, the front door (7) is further moved in the forward direction from the position shown in Figure 5. The second shift head (
42), the head (42) is moved leftward from the position shown in FIG.
while abutting the end face of the first shift head (32).
, the first sleeve (31) and the high-low switching lever (30) move rightward from the position shown in FIG. At the same time as the high-low switching sleeve (2a) contacts the stopper (10a), the high-low switching sleeve (2a) connects the input gear (16) and rear output shaft (12).
The clutch and gear (1, 2a) are engaged with each other, resulting in four-wheel drive in high gear as described above.

The same applies when switching from 4-wheel drive in high gear to 2-wheel drive in high gear. 3 hours from the position in Figure 4]
The shift lever (
7), the 11th ball (50)
from the first recess (54) to the first through hole (5).
1) and the first fitting rJi (52), the first IJ-b (31) and the high-low switching soft make (30) do not move (to the first shaft). '(32) only moves in the right direction in Figure 4, whereas the second sleeve (41) and the shift fork for 2.4-wheel switching (40) move in the second shift head (42).
It is pushed by and moves to the left from the position in Figure 4. Then, due to the movement of the 2.4-wheel switching noft make (40), the 2.4-wheel switching sleeve (21) meshes only with the output gear (18), resulting in the above-mentioned 2-wheel drive in the very high gear. It becomes.

When switching the control lever (8) from 4-wheel drive in high gear to 2-wheel drive as described above, the 2.4-wheel switching sleeve (2b) may become locked due to the difference in rotation between the front and rear wheels. , or when switching from two-wheel drive to four-wheel drive, the two- and four-wheel switching sleeve (2b) collides with the end face of the clutch gear (17a) and becomes temporarily unable to move in the direction of the clutch gear (17a). If the f1M mark 2.4 engaged with the sleeve (2b)
The wheel switching shift fork (40) also falls into a state of knotting, but the second sleeve (41)
) can be moved relative to the springs (40a) and (40b). Even if it is, the second sleeve (41) moves without compressing the spring (40a) or (401).

Then, at the stage when the opening state of the 2.4-wheel switching sleeve (2b) is released, the 2.4-wheel switching/futofu make (40) is connected to the spring (40a) or (40+).
) is slid to a predetermined position by the compression reaction force, thereby operating the 2.4-wheel switching sleeve (2b).

Therefore, as mentioned above, for example 2.4 wheel switching sleeve (2b)
Even if the control lever (8) is temporarily locked, the control lever (8) can be operated smoothly.

(Effects of the Invention) As described above, the core of the transfer according to the present invention.
The control lever can be easily switched to any position between positive/on, neutral, and 4L, and the operability of the control lever is extremely good. Even after long periods of use, we can expect smooth and stable transfer switching operations at all times.

Moreover, even if the L-Lance Core's 2.4-wheel switching sleeve becomes temporarily locked, the control lever/foot operations will not become disabled and can always be operated smoothly.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of the trawl device (according to the present invention), Fig. 2 is a partially omitted horizontal sectional view of the control device, Figs. 3 to 5 are sectional views of main parts, and Fig. What about figure 3? FIG. 4 shows the H shift state, FIG. 4 shows the 41-1 shift state, FIG. 5 shows the neutral shift state, and FIG. 6 shows the 4L noft state. (30) ...High low - switching shift fork (31) ...First sleeve (32) ...First shift head (5) ...
・・1st interlocking means 1st stage (40) ・・・・2. 4-wheel switching fork (
41)...Second sleeve (42)...Second shift head (40a)...
... Spring (40b) ... Spring (6) ... Second interlocking means I.

Claims (1)

[Claims] A first shaft (3) and a second shaft (4) are fixed in parallel, and the first shaft (3) has a shift fork (30) for high-low switching that selects a high gear and a low gear. The sleeve (31) and the first shift head (32) are slidably supported, and the first shift head (32) supports the first sleeve (31) and the first soft head (32). 2.4 wheels that are interlocked by a first interlocking means (5) that can move freely within a certain range with respect to the first sleeve (31), and that the second shaft (4) selects between two-wheel drive and four-wheel drive. The second shift fork (40) is slidably supported.
The sleeve (41), the second sleeve (41), and the second shift head (42) are slidably supported, and the second sleeve (41) and the second shift head (42) are connected to the second shift head (42).
Interlocked by the second interlocking means (6) that interrupts interlocking when the shift head (42) moves beyond a certain level, and 2.4 above.
Wheel switching shift fork (40) and second sleeve (41)
) are interposed between the springs (40a and 40b) so that the shift fork (40) is driven by the second sleeve (41) via the springs (40a and 40b); First and second shift heads (3
2) (42), each of these shift heads (32) (4
2) A transfer control device for an automobile, characterized in that a shift lever (7) for reversibly sliding the shift lever (7) is installed.