CN2606220Y

CN2606220Y - Balanced toothed gear

Info

Publication number: CN2606220Y
Application number: CN 02253724
Authority: CN
Inventors: 陈传志; 罗中亿
Original assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Current assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Priority date: 2002-09-06
Filing date: 2002-09-06
Publication date: 2004-03-10
Anticipated expiration: 2012-09-06

Abstract

The utility model discloses balanced toothed gears relating to the clutch and the balance shaft of the motorcycle engine. The utility model is combined into a whole by that a toothed ring provided with a gear on the outer ring is embedded in a buffer web plate which is then positioned on outer circle of a tooth core which is provided in the center with a shaft hole of the gear to form an integration finally; the toothed ring, the buffer web plate, the tooth core have axial grooves and axial drum-shaped blocks for transmission of torque; the buffer web plate is made of elastic soft material so as to absorb the impact energy to decrease noises; the method has a simple structure, good assembly, better effect of buffering the impact arising from the meshing of gears and decreasing noises.

Description

Balance gear

Technical field

The utility model relates to a kind of gear of engine clutch for motorcycle, especially has the balance shaft gear that reduces impact noise.

Background technique

In the working procedure of the main driven tooth of engine clutch for motorcycle and trunnion shaft, because gear clearance, especially the gap of clutch gear, produce very big noise, for reducing this part noise, now adopt split type master usually, secondary tooth adds the structure of spring, it is to stagger several angle and kept by spring when utilizing secondary tooth and main tooth assembling free state, secondary tooth can rotate in this angle with respect to main tooth, during the engagement beginning, the driving gear of clutch at first makes this pair tooth stressed, then with this main tooth engagement, the stressed back of this pair tooth is rotatable, spring force also increases in rotation, and spring sponges a part of impact energy, and is stressed up to this main tooth, impact when having cushioned gear engagement like this, reach the order that reduces noise.But because the control ratio of spring force is difficult, the accuracy of gear is had relatively high expectations, and makes the effect of buffer gear cold mesh impact also wayward, adds that number of spare parts is more, makes assembling back guaranteeing precision difficulty, poor effect.

The model utility content

The purpose of this utility model provide a kind of simple in structure, assembly process process good, the balance shaft gear of the more effective engine clutch for motorcycle of buffer gear cold mesh impact.

The scheme that adopts for the utility model that achieves the above object is: the outer ring is that the ring gear of gear is embedded in the buffering web, buffering web centering is the outer ring of the tooth core of gear axis hole, forms an integral body; Be transmitting torque, the inner ring of ring gear is made axial groove, and axial projection is made in the outer ring of the buffering web of Pei Heing with it, groove and projection corresponding matching, and the inner ring axial projection corresponding matching of making of axial groove and buffering web is also made in the outer ring of tooth core; Ring gear is at first stressed during engagement, and power is delivered to the buffering web, is delivered to the tooth core again, arrive the axle of this gear at last because the buffering web makes with elastic soft material, when beginning engagement ring gear can do a certain amount of the rotation relative to the tooth core after stressed, absorb most of impact energy, played spring action.

The beneficial effects of the utility model are that because the buffering web that adopts elastic soft material to make, engagement process becomes relative flexibility, has reduced noise naturally; Simultaneously, gear and the part precision that matches can reduce, and have also reduced number of spare parts, make simple in structure, assembly process process is better.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a prior art scheme assembly structure schematic representation.

Fig. 2 is that Fig. 1 structure A is to view.

Fig. 3 is the utility model structural representation.

Fig. 4 is the Side view of the utility model structural representation Fig. 3.

Fig. 5 is another example structure schematic representation of the utility model.

Fig. 6 is the Side view of another embodiment Fig. 5 of the utility model.1. ring gears among the figure, 2. buffering web, 3. tooth core, 4. groove, 5. projection, 6. groove, 7. projection.

Embodiment

Among Fig. 3 and Fig. 4, a mode of execution of the present utility model is that the outer ring of ring gear 1 processes external gear, inner ring is the hole, the buffering web 2 of ring-type just in time embeds in this hole, the buffering web 2 inner ring also just in time the embedding center be the tooth core 3 of gear axis hole, form an integral body; Be transmitting torque, the inner ring of ring gear 1 is opened three along piece 5, the axial groove 4 of garden Zhou Junbu, corresponding three axial projection 5 are made in the outer ring of the buffering web 2 of Pei Heing with it, groove 4 and projection 5 corresponding matching, the outer ring of tooth core 3 are also made three axial projection 7 corresponding matching of making along the axial groove 6 of garden Zhou Junbu and the inner ring of buffering web 2.

Fig. 5 and Fig. 6 are another mode of executions of the present utility model, wherein, the axial groove 6 of the axial projection 5 of the outer ring of the axial groove 4 of the inner ring of ring gear 1, the buffering web 2 that cooperates with it and the outer ring of tooth core 3 and the axial projection 7 corresponding spline forms that make of the inner ring that cushions web 2 are can transmit bigger moment of torsion.

Buffering web 2 usefulness plastics of the present utility model or rubber are made.

Buffering web 2 of the present utility model also can have other shape, and material also can have other material.Also fixing as several Steel Spring Plates insertions along the axial groove of garden Zhou Junbu, also can reach the purpose of this utility model.

Claims

1. balance gear; It is characterized in that, be that the ring gear (1) of gear is embedded on the tooth core (3) that buffering web (2), the embedded center of buffering web (2) are the gear axis holes and forms an integral body by the outer ring.

2. balance gear according to claim 1, it is characterized in that: on ring gear (1) inner ring groove (4) is arranged, projection (5) with the corresponding cooperation of groove (4) is arranged on buffering web (2) outer ring, tooth core (3) has groove (6) on the outer ring, and buffering web (2) inner ring has the projection (7) with the corresponding cooperation of this groove (6).

3. balance gear according to claim 2 is characterized in that: groove (4) and the projection (5) that cooperates and groove (6) and the projection (7) that cooperates are the spline form.

4. according to claim 2 or 3 described balance gears, it is characterized in that: the material of buffering web (2) is plastics or rubber.