JPS58223823A - Selection checking mechanism of transmission - Google Patents

Abstract

PURPOSE:To enable a driver to feel easily the moderation feeling produced by a selection checking mechanism and at the same time to avoid the early wear of a sliding contact part between the tip of a checking arm and a plunger. CONSTITUTION:When a shift lever is changed from a neutral position to the position of another speed changing train, a striking rod 1 has rotary displacement. Then a checking arm 3 fixed to the rod 1 turns from the neutral position. With this turning of the arm 3, a plunger turning projection 3a unified to the arm 3 interlocks an interlocking groove 5d of a plunger 5. Then the arm 3 moves down the plunger against the selection return force of a selection return spring 6. Thus the moderation feeling of the selecting operation is secured for a driver by the above-mentioned selection return force.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission used in an automobile or the like, and particularly to a selection check mechanism for a manual transmission.

Manual transmissions are usually equipped with a striking rod, which is rotated or axially displaced by the driver's selection operation, and then axially or rotationally displaced by the shift operation to change the gear to a predetermined gear. can be put into. -The driver needs to intuitively know whether or not the striking 4-way gear has reached the position corresponding to the requested gear during the select operation described above, and for this purpose the transmission is not equipped to shift the striking 4-way gear to the corresponding striking 4-way gear. Moderation for each row +
A selection check mechanism will be provided.

As this select check mechanism, for example, the one shown in Fig. m1 is known. In the figure, numeral 1 indicates a striking four-wheeler, which is mounted horizontally on the transmission case 2 so as to be rotatable and movable in the axial direction. This striking rod 1 is rotationally displaced from the illustrated neutral position corresponding to the 6th and 4th stage rows by a selection operation (towards the counterclockwise direction when the selection operation is performed to the 1st and 2nd rows, and to the counterclockwise direction when the 5th stage row is selected). and to the reverse row (σ) rotational displacement in the open direction during select operation). When the striking rod 1 is maintained at a rotational position corresponding to any one gear train and is operated to shift, it is displaced in the corresponding axial direction to shift the low-speed gear to the corresponding gear. .

A check arm 3 is connected to the striking four P1 by a roll bin 4, and a plunger 5 is mounted on the tip of the check arm 3, and this plunger is slidably supported on the transmission case 2, and the select return force is The check arm 3 is biased by the select return spring 6 which provides the same, and the syringe 5 is prevented from being pulled out by the driving pin 7. A vertical groove 45a is formed on the outer circumferential surface of the plunger 5, and a stepped portion 5b is set in the vertical groove 5a. Provided for.

When the striking rod 1 is rotated from the shown position (f) (corresponding to the 3rd and 4th stage rows) in the direction of the hour hand in the figure to the 5th stage and backward row by the selection operation, the check arm 3 is rotated in the same direction. , and the plunger 5 is lowered against the select return force of the select return spring 6. This causes the silanja 5 to
b, the check pole 8 is pushed down against the check spring 9, and the check ball 8 moves to the step t? (S
When the driver climbed onto S b, the pressing force of the plunger 5, that is, the select operating force increased rapidly, and the driver felt a sense of moderation when he noticed that the striking rod R1 had reached the rotational position corresponding to the 5th stage and the reverse row. You can know it intuitively.

Then, in this state, by moving the striking rod P1 in the axial direction by a shift operation (the transmission is put into fifth gear or reverse).

However, in such a conventional select check mechanism, the fifth
During the shift operation after the selection operation to the stage and backward row, the plunger 5 is pressed against the tip of the check arm 3 by the selection return force of the selection return spring 6, and the sliding resistance between the two is large. Therefore,
The above-mentioned shift operation that must be performed against this sliding resistance requires a large amount of force, making it difficult for the driver to feel the sense of moderation due to the separately provided shift check mechanism, and making the shift operation feel extremely bad. Furthermore, the sliding contact between the tip of the check arm 3 and the plunger 5 causes premature wear, leading to a decrease in durability.

In order to solve this problem, the present invention displaces the striking rod V against the select return force by a selection operation from the neutral position, and at the end of the stroke returns the striking rod to give a feeling of Fil. In a transmission equipped with a select check device a consisting of a plunger biased by the return spring and slidably supported on the transmission case, the shift after the selecting operation of the striking groove V is performed. A select check device for a transmission, characterized in that a locking mechanism is provided for fixing the plunger to the transmission case at a position such that the select return force does not act on the striking gear P during a shift operation. It is intended to provide #.

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

First, an embodiment of the selection check mechanism of the present invention shown in FIGS. 2, 6, and ff14 will be described.

To explain the configuration, 1 is a striking gear P, which is horizontally mounted on the transmission case 2 so as to be rotatable and movable in the axial direction.
A select operation causes a rotational displacement, and a shift operation causes an axial displacement.

A check arm 3 is connected to the striking rod 1 by a roll bin 4, and a plunger 5 is provided at the light end of the check arm 3. The plunger 5 is slidably supported on the transmission case 2, and is also used as a selector. The check arm 3 is biased in the direction by a select return spring 6 that provides a return force. The sleeve 10 is interposed between the plunger 5 and the transmission case 2 and is fixed to the transmission case 2.

As for the lock mechanism, the lock lever 11 that is linked to the operation of the striking rod 1 is connected to the transmission case 2.
The engagement tip 11a of the lock lever 11 faces an engagement groove 50 formed in the plunger 5.

Mata, lock lever] After lever 1! 11b is formed into a spherical surface, and the arm tip 13 & of the lock lever actuating arm 13 fixed to the striking rod P1 and the rear end Jlb of the lever are configured to come into contact with the spherical surface during rotational displacement due to the selection operation. .

Further, reference numeral 14 denotes a spring interposed between the P lever 8 and the transmission case 2, and the lock lever 11 is configured to engage with the plunger 5 by the spring force and the lock lever stopper 15 during axial displacement due to a shift operation. has been done.

2 Next, to explain the operation, Fig. 2 shows the neutral state, and the locking tip 1 of the lock lever 11
1a is brought into contact with the surface of the plunger 5 by a spring 14, and the check arm 3 and the lock lever operating arm 13 are in a state of being separated from the sylanger 5 and the lock lever 11, respectively.

FIG. 6 shows the select operation state, and when the shift lever is selected from the neutral position to the 5th gear and the reverse row or the 1st and 2nd rows, the striking rod P1 is rotationally displaced. Check arm 3 and lock 92 fixed to the striking rod 1
The working arm 13 rotates from the neutral position shown in FIG. 2 to the position shown in FIG. 6. Due to this arm rotation, one of the lock lever actuating arms 13 presses the arm end Ma1:rrh of the lever rear end 11b of the I-lock lever 11 so as to push it down, and
4, the lock lever 11 is rotated counterclockwise against the lock lever 11, and the engagement tip 11a of the lock lever 11 is inserted into the plunger 5.
away from the surrounding surface. Also, the other check arm 3
The plunger 5 is lowered against the select return force of the select return spring 6, and the select return force gives the driver a sense of moderation in the select operation.

FIG. 4 shows the shift operation section, and when the shift lever is operated from the select position to the 5th speed or reverse side, the striking groove RIG is displaced in the axial direction and is fixed to the striking groove P1. Check 7-arm 3 and lock lever operating arm 13&i slide. Due to this sliding of the end arm, one of the lock lever actuating arms 13 is moved so that the arm tip 131L is connected to the lock lever 1.
In order to separate from the rear end 11b of the lever 1, the spring J
4 acts to rotate the lock lever 11 until it reaches the 15th position, and as the lock lever 11 rotates, the engagement tip 11a engages with the engagement groove 5C of the plunger 5, supporting the return spring force. do. Further, the other check arm 3 can shift in the axial direction without receiving the return spring force from the plunger 5 due to the support of the return spring force.

Furthermore, when the shift lever is returned to the fifth gear or reverse (by default, the select position), the distances between the center of the spherical surface of the lever rear end 11b, the center of the spherical surface of the arm tip 13a, and the center of the striking rod 1 are the same as those of the arm. Tip]
Since the 31L is set larger, the 6th
It will be in the state shown in the figure.

Therefore, the striking rod P1 due to the shift operation
During the axial movement of the check arm 3, the tip of the check arm 3 comes into sliding contact with the syringer 5, but since the sliding resistance between the two is small, the above shift operation can be performed easily, and a shift check machine installed separately can be used. This makes it easier for the driver to feel the sense of moderation due to this, improves the feeling of shifting operation, and solves the durability problem of early wear of the sliding contact between the tip of the check arm 3 and the syringe 5. can.

Next, other embodiments of the select check machine of the present invention shown in FIGS. 5, 6, 7, 8, and 9 will be described.

To explain the structure, the locking mechanism includes a plunger rotation protrusion 3a integrally formed on the check arm 3, and an engagement groove 5d that engages with the plunger rotation protrusion 3a when the check arm 3 is rotated to a changed position by a selection operation. is formed on the plunger 5. Regarding the plunger 5 and the sleeve lo, as shown in FIG. 6, locking engagement protrusions 5e and 5e are provided on the lower end side of the plunger 5, and as shown in FIG. Inverted T-shaped engagement groove 10 on the inner surface
&.

10a is recessed, and as the plunger 5 rotates during axial displacement due to a shift operation, the locking engagement protrusions 5e, 5e form inverted T-shaped retaining grooves 10a, 1.
It is configured to engage with the horizontal groove portion of 0a. That is, the locking mechanism is constituted by the plunger 5 which is rotationally locked in conjunction with the shift operation of the striking rod r1.

Next, to explain the operation, Fig. 5 (2) and (B) show the neutral state, and the four-legged engagement protrusion 5e of the plunger 5 is located at the upper end of the vertical groove part of the inverted T-shaped engagement groove 10g. It is in a state where it is engaged with.

8(4) and (B) show the select operation state 1. When the shift lever is operated from the neutral position to another gear train position, the check arm fixed to the strike rod 1 3 is shown in Figure 5 (B
) to the position shown in FIG. 8(B). By this arm rotation, the plunger rotation protrusion 3 & which is integrated with the check arm 3 moves the plunger 5.
The check arm 3 engages with the engagement groove 5d, and the check arm 3 lowers the plunger 5 against the select return force of the select return spring 6, and this select return force gives the driver a sense of moderation in the select operation. .

FIG. 9 (B) shows the shift operation state, and when the shift lever is shifted from the select position to the 5th gear or reverse side, the striking rod 1 is displaced in the axial direction, and the striking rod 1 is displaced in the axial direction. The check arm 3 fixed at v1 slides. Due to this arm sliding, the plunger rotation protrusion 3a integrated with the check arm 3 presses the side surface of the engagement groove 5d of the syringe 5, and!
Rotate the plunger 5 as shown in FIG. 9. As the plunger 5 rotates, the lodge' phase engagement protrusion 5e protruding from the sylanger 5 engages in an inverted T-shape m10.
It engages with the horizontal groove part a and supports the return spring force. Further, the check arm 3 can shift in the axial direction without receiving the return spring force from the plunger 5 due to the support of the return spring force.

Therefore, the striking rod 1 due to the shift operation
During the axial movement of the check arm 3, the tip of the check arm 3 comes into sliding contact with the plunger 5, but since the sliding resistance between the two is small,
The above-mentioned shift operation can be performed easily, the driver can easily feel the sense of moderation due to the separately provided shift check mechanism, and the shift operation feeling can be improved. It is possible to solve the durability problem of premature wear of the sliding contact portion.

Hereinafter, the mechanism of the present invention has been explained with reference to embodiments illustrating the invention, but the specific configuration is not limited to the embodiments. For example, the lock lever structure of the embodiments may also be linked to the striking rod V. Other structures are also included as long as they are lock levers that engage with the plunger, and other structures are also included as long as they are based on a plunger that rotates and locks in conjunction with the striking rod. It is included even if

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a conventional select check mechanism, FIG. 2 is a cross-sectional view showing an implementation example of the select check mechanism of the present invention, and FIG. 6 is a cross-sectional view showing a select operation state of the implementation example. FIG. 4 is a sectional view showing the shift operation state of the embodiment, a planar view showing the implementation mode of the select check mechanism of the present invention in the fifth rotation, and FIG. 5(B) is a sectional view showing the implementation mode, No. 6 IXJ is a perspective view showing the plunger of the implementation other system, FIG. 7 is a perspective view showing the sleeve of the implementation other system, No. 8 IXJ is a plan view showing the select operation state of the implementation other system, and FIG. 8 IBI
is a cross-sectional view showing the state of FIG. 8 (5), FIG. 9 is a plan view showing the shift operation state of the prisoner implementation system, and FIG.
FIG. 3 is a sectional view showing the prisoner state. l... - striking rod v, 2... transmission case,... check arm, 5... plunger, 6...
・Select return spring, 11...Lock lever
0 Patent applicant Nissan Motor Co., Ltd. Figure 1 Page 2 1st page Figure 5 (A) (B) Figure 6
Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1) A return spring for displacing the striking blond against a select return force by a selection operation from a neutral position and giving a sense of moderation to the striking four V at the end of its stroke; In the transmission [11] equipped with a select check mechanism consisting of a plunger biased by the return spring and slidably supported on the transmission case, at the shift position after the selecting operation of the striking four V, the A select check mechanism for a transmission, characterized in that a locking mechanism is provided for fixing a plunger to a transmission case so that the select return force does not act on the striking four V during a shift operation. 2. Claim 1, wherein the locking mechanism is constituted by a lock lever rotatably supported by a transmission case that engages with a sylanger in conjunction with a shifting operation of a striking four-vehicle. Select check mechanism of the transmission described.