JPS6222425Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transfer switching device for an automobile.

As a conventionally known transfer switching device, as described in Japanese Utility Model Application No. 56-53631, an interlock pin is inserted between a pair of shift rods so as to be movable in a right angle direction, and the interlock pins are connected to each other. It is known that a groove-shaped notch formed in the shift rod is recessed to prevent both shift rods from shifting at the same time. In this case, since the shift movement of both shift rods is controlled by one interlock pin, there is a problem in that the shift movement cannot be performed smoothly, and there is also a problem in terms of durability.

The present invention makes it possible to obtain a straight shift pattern by controlling the shift movement of a pair of shift rods with two interlock pins, thereby smoothing the operation of the transfer switching device. The purpose is to measure the

To achieve this purpose, the present invention includes a pair of mutually parallel shift rods that are slidably provided on the transfer case, and a shift rod that is attached to and corresponds to the transfer case so as to be movable in a right angle direction between the shift rods. a first interlock pin that is selectively recessed into a groove-like notch provided in the shift rod to prevent both shift rods from shifting simultaneously; and a first interlock pin that slides through both the shift rods in conjunction with the shift lever. between the sleeve member and the shift rod, the sleeve member is attached to the sleeve member so as to be movable in the right angle direction, and is selectively recessed into a groove-like notch provided in the corresponding shift rod, so that only the corresponding shift rod is shifted. It is characterized by a configuration consisting of a second interlock pin that enables.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An automobile transfer switching device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

A pair of mutually parallel shift rods 2 and 3 are located inside the transfer case designated by the reference numeral 1 in FIG.
is slidably suspended horizontally between the side walls 1a and 1b.

One shift rod 2 has three notched recesses 6a, 6b, and 6c formed in the transfer case side wall 1a into which a spherical stopper 4 backed up by a spring 5 is to be inserted. When the shift rod 2 sequentially enters the cutout recesses 6a, 6b, and 6c, it is sequentially positioned in the H range (high range), N range (neutral range), and L range (low range). That is, the shift rod 2 is used for L-H switching.

The other shift rod 3 has two cutout recesses 9a and 9b formed in the transfer case side wall 1a into which a spherical stopper 7, which is different from the stopper 4 backed up by the spring 8, is to be inserted. , the stopper 7 notch recess 9a,
9b, the shift rod 3 is sequentially positioned in the two-wheel drive range and then in the four-wheel drive range. That is, the shift rod 3 is used for 2-4 switching.

A first interlock pin 10, which is located between the shift rods 2 and 3 and is movable in a right angle direction, is inserted into the transfer case side wall 1a.

A shift rod 2 is provided on the opposite side of the notch recesses 6a, 6b, and 6c in the shift rod 2.
A groove-shaped notch 11a into which the interlock pin 10 is to be inserted when the stopper 4 is positioned in the H range (that is, when the stopper 4 is recessed into the notch recess 6a).
is formed. Further, on the opposite side of the notch recesses 9a and 9b in the shift rod 3, the interlock pin is provided when the shift rod 3 is positioned in the four-wheel drive range (that is, when the stopper 7 is recessed into the notch recess 9b). A groove-shaped notch 12a into which the groove 10 is to be indented is formed. Thus, the first interlock pin 10 is designed to selectively recess into the notch 11a or 12a of the corresponding shift rod 2 or 3, and the shift rod 2 or 3 that allows the interlock pin 10 to recess. is considered impossible to shift. That is, the action of this interlock pin 10 prevents both shift rods 2 and 3 from shifting simultaneously.

Furthermore, both shift rods 2 and 3 are provided with a sleeve member 15 that slides through them and is linked to a shift lever 14 via an interlocking mechanism 13.

The sleeve member 15 includes a shift rod 2,
A second interlock pin 16 that is movable in the right angle direction is inserted between the two.

Then, in the shift rod 2, the notch 11
On the same side as a, the interlock pin 16 should be recessed when the shift rod 2 is positioned in the L range and the N range (that is, when the stopper 4 is recessed into the notched recesses 6c and 6b). A groove-shaped notch 11b is formed. Also, on the same side of the shift rod 3 as the notch 12a, there is a groove into which the interlock pin 16 is to be inserted when the shift rod 3 is in the two-wheel drive range (that is, when the stopper 7 is recessed into the notch recess 9a). A shaped notch 12b is formed. Thus, the second interlock pin 16 is configured to selectively recess into the notch 11b or 12b of the corresponding shift rod 2 or 3, and the shift rod 2 or 3 that allows the interlock pin 16 to retract only can be shifted.

Shift yokes 17 and 18 for gear changing are attached to the shift rods 2 and 3, respectively. Reference numeral 19 designates a spring for a waiting mechanism for keeping the shift yoke 18 on standby until a gear change is possible during shift movement of the shift rod 3, and 20 and 21 designate snap rings provided on the shift rods 2 and 3.

The interlocking mechanism 13 includes an arm 22 connected to the sleeve member 15, a sliding shaft 23 that pivotally supports the arm 22 and is slidable with respect to the transfer case 1, and an end connected to the sliding shaft 23. and a shaft 24 connected to the shift lever 14 at the other end. Therefore, shift lever 1
In response to the linear movement of shift rod 4, shift movement of shift rod 2 or 3 becomes possible.

Next, the operation of the illustrated transfer switching device will be explained in detail with reference to FIGS. 2 to 5.

In the state shown in FIG. 2, the stopper 4 is recessed into the notched recess 6c to position the shift rod 2 in the L range, while the stopper 7 is recessed into the notched recess 9b to position the shift rod 3 in the 4-wheel drive range. has been done. Therefore, the automobile is operating in the four-wheel drive low range (4L range). At this time, the first interlock pin 10
The second interlock pin 16 recesses into the notch 12a of the corresponding shift rod 3, rendering the shift rod 3 unable to shift, while the second interlock pin 16 recesses into the notch 11b of the corresponding shift rod 2, disabling the shift rod 2. It can be shifted together with the sleeve member 15.

From the state shown in Fig. 2 to the shift lever 14 (Fig. 1)
When the sleeve member 15 is moved in the direction of arrow A, only the shift rod 2 is shifted in the direction of arrow A, and as shown in FIG. Positioned to N range. Therefore, the vehicle is in a neutral range (N range) operating state. At this time, the first and second interlock pins 10 and 16 are in the same state as shown in FIG. 2 above.

From the state shown in Fig. 3, shift lever 14 (first
When the sleeve member 15 is moved in the direction of arrow A, the shift rod 2 is moved in the same manner as before.
As shown in FIG. 4, the shift rod 2 is positioned in the H range by recessing the stopper 4 into the notched recess 6a.
Therefore, the automobile is in a four-wheel drive high range (4H range) operating state. At this time, the first interlock pin 10 becomes able to fall into the notch 11a of the shift rod 2, and the second interlock pin 16 also becomes able to fall into the notch 12b of the shift rod 3. That is, while the shift rod 2 cannot be shifted, the shift rod 3 can be shifted together with the sleeve member 15.

From the state shown in Fig. 4 to the shift lever 14 (Fig. 1)
When the sleeve member 15 is moved further in the direction of arrow A, only the shift rod 3 is moved in the direction of arrow A.
As shown in FIG. 5, the shift rod 3 is positioned in the two-wheel drive range by recessing the stopper 7 into the notched recess 9a. Therefore, the vehicle is in a two-wheel drive high range (2H range) operating state. At this time, the first and second interlock pins 10 and 16 are recessed into the notches 11a and 12b, respectively. still,
It is obvious that the reverse operation from the 2H range to the 4L range can be performed by performing the reverse operation.

As described above, the first interlock pin 10 selectively disables shifting of the shift rod 2 or 3, and the second interlock pin 10 selectively disables shift movement of the shift rod 2 or 3 together with the sleeve member 15. By enabling transfer switching using the pin 16, the change pattern becomes a straight line, and the shift movement becomes extremely smooth.

Next, the effects of the automotive transfer switching device of the present invention will be described.

According to the present invention, in addition to the conventionally known first interlock pin that locks the pair of shift rods from shifting simultaneously, the interlock pin is attached to a sleeve member that slides through both shift rods in conjunction with the shift lever. A second interlock pin is provided that allows only the selected shift rod to be shifted by the sleeve member, and the shift movement of the shift rod is controlled by the two interlock pins, so that the change pattern can be made in a straight line. This has the practical effect of significantly smoothing the switching operation.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a transfer switching device for an automobile according to an embodiment of the present invention, and FIGS. 2 to 5 are cross-sectional views of essential parts for explaining the operation of the transfer switching device shown in FIG. 1. It is a diagram. 1... Transfer case, 2, 3... Shift rod, 10, 16... Interlock pin, 11
a, 11b...notch, 12a, 12b...notch,
14...Shift lever, 15...Sleeve member.

Claims (1)

[Scope of utility model registration request] A pair of mutually parallel shift rods slidably provided on the transfer case, and a groove-shaped notch provided in the corresponding shift rod and attached to the transfer case so as to be movable in a right angle direction between the shift rods. a first interlock pin that is selectively indented to prevent both shift rods from shifting simultaneously; a sleeve member that is interlocked with a shift lever and slidably passes through both of the shift rods; a second interlock pin that is attached to the sleeve member so as to be movable in the right angle direction and that is selectively recessed into a groove-like notch provided in the corresponding shift rod so that only the corresponding shift rod can shift; An automobile transfer switching device characterized by: