JPS5950822A - Speed change operating mechanism - Google Patents

Abstract

PURPOSE:To perform light speed change operation by providing a tubular change guide coaxially around a bearing body for supporting a change rod and achieving smooth guiding as rotation of the change rod. CONSTITUTION:A change guide 4 is provided with a guide groove 22 having linear guide groove 21, lower groove 22a and upper groove 22b such that the upper groove 22b will be same height with the guide groove 21 while the guide grooves 21, 22 will be same height. When engaging a guide pin in the guide groove 22 and turning the change lever to move said pin 23 along the upper groove 22b, speed change of advance three speed F3, advance F2 and advance F1 are performed. While when turning the lever 8 to the neutral N position to push down the lever 8 against the spring thus to engage the pin 23 in the lower groove 22a, and turning the lever 8 to back R, backing is performed. In other words, the rod 7 can move smoothly against the guide 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed change operating device for moving vehicles such as tractors. In the case of a car, turning movements including reverse movement are repeated, and gear shifting operations are also extremely frequent, so it is extremely important that the change lever can be operated easily and without stiffness.However, conventionally used For example, in the shift pattern of the 11 type or 11 type, the change lever operation is not light and responsive, and the response during operation is compounded by the rattling of various parts, giving a feeling of collision.

Therefore, in this invention, the change rod is supported by a bearing body, and the change rod is rotated around the cylinder core of the bearing body to perform a gear changeover operation.
A change guide formed in a cylindrical shape to guide the shift position of the change rod is configured in the change/non-operation mechanism provided on this bearing body in the same manner as the above bearing body, and when the change rod is rotated, The change guide, which is the same as the bearing body, performs a smooth guiding operation, making gear shifting operations light and easy with less resistance.

The specific structure will be explained based on an illustrated example.
As shown in Figure 1, which shows the overall side view, and Figure 2, which shows the longitudinal side view of the main part, the steering wheel shaft (2) to which the steering handle (1) is attached is the Kiyoaki steering boss) (3).
Fig. 3 shows a perspective view, and Fig. 4 shows a side view.
As shown in FIG. 5, the change guide (4) is formed into a cylindrical shape, and at the bottom thereof there are +', l+ receptors (5) which are the same as the cylindrical center of the change guide. ) can be formed integrally or separately to form a change guide (4)
and bearing body (5) may be fixed to each other, or furthermore, bearing body (5) may be independently fixed to steering post (3)), change boss) (inserted in 31). The change guide (4) is fixed with its mounting seat (4a) to the whistle part (3a) of the steering post (3) with bolts (6)...K, and rotated and shafted to the bearing body (5). Spline bosses (7R) and (7b) are provided at both upper and lower ends of the change rod (7) fitted together so that it can move freely in the longitudinal direction, and the upper spline boss (7a) is fitted with a change lever (81).
Fit the spline hole (8I) of the lever boss (8a) of the lever boss (8a), and screw the nut (gage υ) onto the male thread provided at the upper end of the spline boss (7a) to attach the change lever (8) to the change rod (7). ) K is fixed.Then, the change cover (11) attached to the upper opening (1~) of the mission case 11 lft is
A pair of free Narikos that can be rotated freely (one wholesale competition is established,
The arm (14a) of the operating rod (14) attached to one side of the lower universal joint (14b) is provided with the K operating pin (14b), and the shifter cylinder [19] engaged with this operating pin (14h) is attached to the arm (14a) of the operating rod (14) attached to one side. +1 (lag to the left or right of Figure 2 along ilK)
fTl, l operation (t% crop salary (1a) rotation?l1l1
Depending on the construction), the transmission case (transmission not shown in 11) (for example, oil field control type)
41 is formed so that the gear shift state can be switched to a predetermined speed change state.

Then, the spline hole (13a) of the upper universal joint (1)
) to the lower spline boss (7) of the change rod (7).
1)) and change rod (7) K seat (11 and (
A spring (1) inserted between the upper seat and the bearing body (!'I) pushes the engine rod (7) downward, and the lower seat (!'I) The change rod (7) is provided so as to be pushed upward by a spring r2I interposed between the upper universal joint (1, 1), and the change guide (4) has a linear guide groove /21> and a guide groove (′!) having a lower groove (υ) and an upper groove (22b).
Install the hot water so that the upper groove (Q) is at the same height as the guide groove QO, and both guide grooves (21) and 1 to 2) have the same length, and then connect the change rod (7). As shown in Figures 3 and 4, insert the guide pin (21) implanted in the
Move the change lever (8) so that the guide pin 12.1 moves along the upper *V>> by engaging the guide groove (
), if you rotate 3 forward speeds (1 and 3), front aB2
, 'ilj (li'2), front A (1st gear (F+)), and the change lever (8) was moved to neutral (N fit). Push down the lever (8) against the lower spring lag (at this time, the spline boss (711) moves downward relative to the spline hole (13a) K, so the upper free hand C
1. The height of the algae does not change) Is it lower? 111 (22a)K
Engage the guide bin Q (and move the change lever (8) backwards (particularly if you rotate it, the gear change operation will be performed), and this one engagement groove C is busy with the guide bin C!
11 is engaged, align the guide pin with the notch (ηC) and pull the change lever (8) against the spring in position 1 (against the spline boss). (71>) from the spline hole (1st theory), rotate this change lever (8) at the height of the side so that the notch (21a) K of the other guide groove t21) is visible, and then remove the change lever (8) from the spline hole (1). When you release your hand from the upper spring (I!9), the guide pin C2:9 moves into this other guide groove +21.
The position change lever (8) that engages with 1 is held;
Then, if you operate the change lever (8) simultaneously, as shown in Figure 4, f forward: forward speed (ii”s), forward 2nd speed (F2),
Forward 1; t<(F'+), neutral (NpL and backward (T?)
), and when the guide bin is engaged with one guide groove lJ and the change lever is in the sliding position, the driver in the driver's seat (8) Is this Driving 1, for example, located in the left front of the fake author? 1. "Tight ζ guide pin (21
+ at the position where it engages with the other guide groove Qυ; 1. The setting position of the busy change guide (4) is determined so that the change lever (8) is located to the right of the driving operation i.

Therefore, the change lever (8) can be held in either the left or right position according to the driver's preference or the operator's preference, and there is also a special edition that allows the change lever (8) to be held in either the left or right position according to the operator's preference or the operator's preference. In the work that I do, I often repeat forward and backward movement, so I need a guide groove on a straight line. Although it is convenient to use I) in terms of availability, it is important to ensure safe driving when working in camp, etc., and to be able to clearly identify the reverse operation position from G.
I'm a 4-year-old, so I'm ranked -E? It is sufficient to use a guide tR121 having a lower groove (22a) and a lower groove (22a).

Depending on the use of the vehicle, both of the guide grooves may be formed in a straight line, or may be formed in two steps, an upper groove and a lower groove.

The core of this invention is the speed change operation 4f (as mentioned above, the cylindrical core of the bearing body (5) that supports the 11 engine rod (7) and the same trap-shaped guide (4), Since it is provided in this bearing body (5), the change rod (7) that is placed inside the bearing body (5) and is rotated is
Like the receiver (5), the change guide 14) can be rotated smoothly against the VC without stiffness, making the gear shifting operation extremely smooth and light.

[Brief explanation of the drawing]

The figure shows an example of this invention in action; Figure 1 shows it installed on a heavy vehicle! The whole river 11i! Fig. 2 is a vertical sectional side view of the main part of the castle in Fig. 1, Fig. 3 is a main part r of Fig. 2 (congratulatory drawing, Fig. 4 is a sectional view taken along line A-A in Fig. 2, Fifth
The figure is a developed view of the change guide. Ladle number description (+1...Steering handle C2)...Handle shaft (3)...Steering post (3a
)...knob-like part (4)...change guide (4
a)...Mounting seat (5)...Bearing body (6
)...Bolt (7)...Change rod (7aX
7t+X8a)...Spline boss (R)...Change lever (81)XI)...Spline hole (9)
...Natsuto (11...Missing H-ring (10a)..." Part 1 part 1 mark...Change cover (+31+3>...Universal joint
110...)ψcloth frame (14+)...operation arm
(1, lb)...Operation bottle (19...Shifter cylinder I+rq...Stat t+ryn81-...Seat
(11t) (t) ・'
Basai,)0111'I'-5-...Guide? Pj
(2Ta) (2?r) - = l sword body. (22a)...Lower groove (221))...
Upper groove 12.1)...Guide pin (I-0/
・11 cars (F'2) ・2 forward speeds
(F3)...3 previous clauses (to)...neutral
(It)...4 Patent Applicant Iseki Agricultural Machinery Co., Ltd. 1

Claims (1)

[Claims] The change rod is supported by a bearing body, and the change rod is rotated to perform a synchronization period switching operation, and the gear shift position of the change rod is guided. A speed change operation mechanism in which a cylindrical change guide is provided on this -hl+ bearing body in the same manner as the L bearing body.