CN201129430Y

CN201129430Y - Toothed wheel buffering structure

Info

Publication number: CN201129430Y
Application number: CNU2007203091332U
Authority: CN
Inventors: 梁钟铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-25
Filing date: 2007-12-25
Publication date: 2008-10-08
Anticipated expiration: 2017-12-25

Abstract

The utility model relates to a gear buffer structure, which comprises an upper gear, a lower gear and a buffer structure, wherein the upper gear and the lower gear have axial centers on the same line, and the buffer structure is arranged between relative radial plates of the two gears. The buffer structure comprises a projection, a buffer element and a support, wherein the projection is arranged on a lower radial plate of the upper gear, the support is used to contain the buffer element, and the support corresponding to the projection of the upper gear is arranged on an upper radial plate of the lower gear. The front portion of the projection extends into the support against one end of the buffer element. When used, the upper gear and the lower gear of the gear buffer structure are respectively arranged on a segment of a wheel shaft, the torque is transmitted through the buffer structure, therefore when the transmitted torque gets large in variation, the variation can be delayed and absorbed, the torque variation is enabled to be stable, and instantaneous shock upon gear sets and wheel shafts can be avoided, thereby reducing noise and prolonging the service life of a speed reducer.

Description

A kind of gear buffer structure

Technical field

The utility model relates to gear drive, especially relates to a kind of gear buffer structure.

Background technique

In the prior art, the retarder of goods such as toy often adopts the multi-stage gear group to realize; The coaxial big small gear of the many employings of its intergrade driving gear, but, when the rotating speed of motor or turn to flip-flop, perhaps external loading increase suddenly, when dwindling, the moment of torsion variable of its moment is bigger, and fierce collision takes place between other gears that this coaxial big small gear is meshed with it easily, can send bigger noise, strengthen the wearing and tearing between the flank of tooth, reduce the life-span; And the wheel shaft of each wheel shaft, especially this coaxial big small gear also needs to bear bigger moment of torsion variable, damages easily, causes speed reducer to lose efficacy.So, design and a kind ofly can when change in torque, suitably absorb change in torque, reduce collision between gear train, reduce noise and protect the gear buffer structure of each wheel shaft, just become urgent demand.

The model utility content

The technical problems to be solved in the utility model, provide a kind of can be when the retarder moment of torsion suddenlys change absorption portion moment of torsion variable, reduce collision and wheel axle load between gear train, make the gear buffer structure of realizing flexible transmission between the gear train.

The purpose of this utility model is to realize by following technological scheme:

A kind of gear buffer structure, it comprises that the axle center is collinear one to cog and a lower gear, it is characterized in that: it also comprises a buffer structure that is arranged between described two gear discs; This buffer structure comprises that one is arranged at projection, a buffer element and on the following disc that cogs and is used for the bearing of ccontaining this buffer element, and the projection that this bearing correspondence cogs is arranged on the superradial of lower gear; Described projection front portion enters in this bearing, with an end butt of described buffer element.

Described gear buffer structure is characterized in that, described bearing is the curve bath that an end is provided with opening, and described projection is that the projection in this curve bath is stretched in a front portion.

Described gear buffer structure is characterized in that, described buffer element is a resilient member, and its front end and back end all is arranged in the described bearing.

Described gear buffer structure is characterized in that, described resilient member is spring or rubber strip.

Described gear buffer structure is characterized in that, described bearing is two, its opening relatively, be symmetricly set on the lower gear disc lower surface; Place in its opening under the anterior normality of the described projection that cogs.

Described gear buffer structure is characterized in that, described buffer element is two, and it is separately positioned in the described bearing.

Described gear buffer structure, the described disc that cogs down is provided with a screw, under the described lower gear on the disc to being provided with a long arc shape through hole by screw, a screw passes this through hole and connects this screw, with described upper and lower gear shaft to linking together.

Described gear buffer structure, on the described disc that cogs down, be symmetrical in the gear axis hole and be provided with two screws, on the following disc of described lower gear to being provided with two long arc shape through holes by screw, two-screw passes this through hole respectively and connects this screw, with described upper and lower gear shaft to linking together.

During use, the lower gear of going up of the present utility model is separately positioned on one section wheel shaft, its moment of torsion is by described buffer structure transmission, thereby, when moment of torsion variable that it transmitted is big, can delays and absorb this variation, thereby make change in torque comparatively steady, avoid moment impact, reduce noise and prolong life-span of retarder gear train and wheel shaft.

Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail.

Description of drawings

Fig. 1 is an assembling schematic representation of the present utility model;

Fig. 2 looks sectional view for the utility model assembled state master;

Fig. 3 is the sectional view of B-B among Fig. 2;

Fig. 4 is the right elevation of Fig. 2.

Among the figure: 1, cog; 2, lower gear; 3, spring; 4, screw; 11, projection; 12, screw; 21 bearings; 22, through hole.

Embodiment

Referring to Fig. 1～Fig. 4, construct a kind of gear buffer structure, it comprises that the axle center is collinear one 1 and one lower gear 2 that cogs, and is arranged on the buffer structure between described two gears, 1,2 disc; This buffer structure comprises that one is arranged at projection 11, a buffer element 3 and on 1 the following disc of cogging and is used for the bearing 21 of ccontaining this buffer element 3, and cog 1 projection 11 of these bearing 21 correspondences is arranged on the superradial of lower gear 2; Described projection 11 front portions are stretched in this bearing 21, with an end butt of described buffer element 3.Described bearing 21 is the curve bath that an end is provided with opening, and described projection 21 is that the projection in this curve bath is stretched in a front portion; Described buffer element 3 is a resilient member, and concrete is a spring, and its front end and back end all is arranged in the described bearing 21.Also can adopt rubber strip or other resilient members among other embodiments.

In the present embodiment, described bearing 21 is two, its opening relatively, be symmetricly set on the lower gear 2 disc lower surfaces; Place in its opening under described 1 the projection 21 anterior normalities of cogging, can in this bearing 21, slidably reciprocate during work, its both sides respectively with spring 3 butts; Described spring 3 also is two, and it is separately positioned in the described bearing 21, can the moment of torsion of positive and negative both direction be transmitted and cushion; On the described 1 time disc of cogging, be symmetrical in this gear axis hole and be provided with two screws 12, on the following disc of described lower gear 2 to being provided with two long arc shape through holes 22 by screw 12, two-screw 4 passes this through hole 22 and connects this screw 22, described upper and

lower gear

1,2 is axially linked together, to keep the axial position of the two.

As described in the utility model the foregoing description, adopt structure same or similar and other gear buffer structures of obtaining, all within the utility model protection domain with it.

Claims

1. gear buffer structure, it comprises that the axle center is collinear one to cog and a lower gear, it is characterized in that: it also comprises a buffer structure that is arranged between described two gear discs; This buffer structure comprises that one is arranged at projection, a buffer element and on the following disc that cogs and is used for the bearing of ccontaining this buffer element, and the projection that this bearing correspondence cogs is arranged on the superradial of lower gear; Described projection front portion enters in this bearing, with an end butt of described buffer element.

2. gear buffer structure according to claim 1 is characterized in that, described bearing is the curve bath that an end is provided with opening, and described projection is that the projection in this curve bath is stretched in a front portion.

3. gear buffer structure according to claim 1 is characterized in that, described buffer element is a resilient member, and its front end and back end all is arranged in the described bearing.

4. gear buffer structure according to claim 3 is characterized in that, described resilient member is spring or rubber strip.

5. gear buffer structure according to claim 1 is characterized in that, described bearing is two, its opening relatively, be symmetricly set on the lower gear disc lower surface; Place in its opening under the anterior normality of the described projection that cogs.

6. gear buffer structure according to claim 5 is characterized in that, described buffer element is two, and it is separately positioned in the described bearing.

7. gear buffer structure according to claim 1, it is characterized in that the described disc that cogs down is provided with a screw, under the described lower gear on the disc to being provided with a long arc shape through hole by screw, one screw passes this through hole and connects this screw, with described upper and lower gear shaft to linking together.

8. gear buffer structure according to claim 7, it is characterized in that, on the described disc that cogs down, be symmetrical in the gear axis hole and be provided with two screws, on the following disc of described lower gear to being provided with two long arc shape through holes by screw, two-screw passes this through hole and connects this screw, with described upper and lower gear shaft to linking together.