JPS604652A - gear transmission - Google Patents

Abstract

PURPOSE:To make compact the structure by providing second transmission gear shiftably while providing a section gearable with first transmission gear. CONSTITUTION:Second transmission gears 9c, 9d are provided shiftably while section (U) gearable with the first transmission gears 9a, 9b which will adjoin upon shifting is provided on each of second transmission gears 9c, 9d. Consequently, special clutch chip for the clutch mechanism is not required nor the special space for fixing the clutch chip is required, resulting in compact structure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a pair of first transmission gears t in which the transmission shift gears can be selectively engaged; %2 transmission gears, in a state where they can freely rotate each other, and both towers 1
A clutch mechanism is provided, which is positioned between the transmission gears and supported by an M-transmission shaft on the transmission J shaft, and connects each of the two tower two transmission gears to the first transmission gear which is in contact with the transmission gear so as to rotate integrally therewith. It relates to a gear transmission.

Conventionally, when configuring a clutch mechanism in such a gear transmission device, as shown in FIG.
, (9, d) are provided at intervals, and the transmission gears (9c) and (9d) are located at the same position, and the second transmission gear (9c) slides.

(9d) The 5ILIJ clutch pieces, which engage selectively with respect to the K, are slidably spline-connected [7. In addition, special machining must be performed on the transmission shaft (9), and in addition, due to the configuration of the clutch mechanism, a separate latch piece (Kawane) must be formed, making it difficult to manufacture. There is a disadvantage that it becomes complicated, and the clutch piece (t
■ Space for sliding gold painting second transmission gear (9c),
(od) Due to the point that must be formed between
However, there is a disadvantage that it is difficult to configure the width along the axial direction of the lJ axis (9), and there is still room for improvement.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to simplify and downsize the entire 1J model by modifying the ML model.

In the standby configuration of the gear transmission device according to the present invention, the clutch mechanism includes two second transmission gear housings, a f.
In addition, each of the two transmission gears on both sides is provided with a conspicuous engagement part 6L1pa that is in contact with the transmission gear ＠l that comes into contact with the transmission gear when the two transmission gears are shifted. be.

Next, the effects of the characteristic configuration of the present invention will be described.

That is, since the second transmission gear itself is shifted to engage and disengage from the first transmission gear, (a) there is no need to provide a special latch piece for the structure of the clutch mechanism; Because of the single-piece mounting, there is no need to perform any special processing on the transmission shaft, and (b) no special space is required for mounting the clutch pieces.

Therefore, by (a) above, the clutch mechanism can be simplified, and by (b) above, it is possible to have a compact configuration with a small width along the axial direction of the transmission shaft, which improves production. We have now achieved a gear transmission device that has practical advantages, such as being able to be installed in a small transmission MJ Goose, and having practical advantages even when it is installed.

Embodiments of the present invention will be described below based on the drawings.

As shown in Fig. 1, a walking-type cultivator is constructed by providing a driving mission booth (2) to which the power of the engine IL+ is transmitted by a belt, a control handle lever (3), and a rotary tiller (4). Next, the mission booth (
The transmission structure in 2) will be explained in detail.

As shown in Fig. 2, the input shaft (5), the first sub-shift shaft (6)
), the reverse speed change shaft (8), the second sub-speed shift shaft t91, and the steering clutch shaft (10) are supported parallel to each other, and the input shaft (5) , the auxiliary transmission shift gear (5a) having a large diameter gear part and a small diameter gear thS is provided outside the spline, and the 11ii11 transmission shaft (6
), large and small gears (6a), (6b) that selectively mesh with the secondary operating shift gear (5a), and an output gear (6c).
)′,! The first auxiliary transmission mechanism is configured such that it can be rotated freely at low and low speeds, and operates in two high and low gears.

Shift gear C'lb) k
A large-sized low-speed forward gear (9a) with an interlocking pattern and a small-diameter high-speed shift gear (7b) can be provided with a sliding pattern T C spline externally fitted and provided respectively. t++1
4 gear (9b) and reverse gear (8a),
Reverse gear (8 m) between both forward gears (9m) and (9b)
a) with both forward gears (9a
), (9b) are externally fitted with splines to the second sub-shift shaft, 9), and the reverse gear (8a) i reverse shift shaft (8)
and a reverse transmission gear (9a) which is provided with a shape to be externally fitted with a spline, and which is in constant engagement with the low-speed forward gear (9a).
8b) (+-1) The reverse speed change shaft (8) is fitted with a spline, and the output from the 11ii11f speed mechanism is configured to change the speed to two forward speeds and one reverse speed.

A small-diameter low-speed transmission gear (9c), and a large-diameter high-speed transmission gear (9d) externally fitted on the boss portion of the gear with an idler rotation.
It is freely rotatably supported on the 00 second auxiliary transmission shaft, 9) in a state where it is located between the double-ended IJ advancement gears (9a) and (9b). And the image transmission assisting gear (9c).

(9d) An annular stopper t'rl 't that fixes the t-integral slide eye V, is externally fitted to the boss part of the low speed transmission gear (9c), and both transmission gears (9c), (9
d) Shift fork LSI with gold integrated sliding operation
The forward gear (9) is provided, and the forward gear (9
a).

(Db) b1. On the other hand, an occlusal protrusion (4, (cut) is provided as an occlusal part that can be freely occlusally and disengaged, and both transmission gears (
9c), (9d) o husband't 'a-adjacent position if'
if Lug (J mark general gear (9a), (9b
) An input gear (10a) comprising a clutch grinding groove connected to rotate integrally with K, and further comprising gear parts (G1) (G2) that engage with the transmission auxiliary gears (9c) and (9d) separately. A, the calibrated latch! Tsumugi Idol K supports the free rotation, and the output from the Oga speed structure is adjusted to high and low levels.
A second auxiliary transmission mechanism that changes gears is provided.

Said calibration clutch + l'l1lLl (1) K % chisel right axle (1), (1
12a), Clutch gears 11 and 13+, which are always connected to (12a), are slidable and freely rotating.
At the same time, the clutch gear 1J3) and the ψ field slide on the support cylinder H of the input gear (10a)!
Occlusal process that dislocates with ItllIc (14a)
, (14a) k provided, left and right single 11i YulJ
No. 94 can be driven separately.

In the above-mentioned embodiments, all the cases in which the present invention is applied to configure each of the soil speed mechanism and the second sub-transmission mechanism are illustrated. It is possible. In addition, if you compare it with the part name described in the parts core metal patent claims described in the examples,
2nd sub-change t Linked shaft 19+ is a transmission shaft, main transmission shift gear (7b) is transmission shift gear, ntJ advancement gear (9a)
, (9b) is the first transmission gear, and the manual gear (10a)
gear part (Gl).

(G2) is the transmission gear, transmission gear (9c), (9d)
is the second transmission gear.

In carrying out the present invention, the transmission shift gear (7b) is
In addition to being used on the upper side, the transmission gear CGl),
(G2) may be used on the upper side of the transmission,
Further, the common dimensions of each gear can be changed in various ways depending on the VC to be used, and furthermore, it can be operated using various known structures.

[Brief explanation of drawings]

The drawings show an embodiment of the gear transmission device according to the present invention, and the first embodiment is shown in the drawings.
The figure is a side view of the walk-behind cultivator, FIG. 2 is an exploded rear view showing the gear transmission structure, and FIG. 8 is a rear view of a conventional A construction. (7b) ---speed shift gear, I9) ---
・Transmission shaft, (9a), (9b) ・-・-・-1st
Transmission gear, (9c), (9d)...Second transmission gear, (Gs), (G2)...Transmission gear,
(U)...Occlusal part.

Claims (1)

[Claims] A pair of first transmission gears (9a), (9b) k, which can be selectively engaged with the variable speed shift gear (7b). ! 7!
11411.91 K, a pair of MIJ2 transmission gears (9c), (9d) (il
-1 Transmission gears (9a) for both towers 1, which are mutually rotatable relative to each other. After positioning the transmission shaft between (9b), the K free rotation support is placed between the two transmission gears (9c) and (9d).
The first transmission gears (9a) are located adjacent to each other. (9b) is a gear transmission device provided with a clutch mechanism connected to rotate integrally with the clutch mechanism f:4, and the two towers 2 transmission gear (9c). (9d) The first transmission gear (9m) is provided so as to be freely shiftable, and is located adjacent to each of the two towers 2 transmission gears (9c) and (9d) as the gears are shifted.
(9b) A gear transmission device having a removable interlocking part (cut) (ψ) with respect to K.