Worm and gear mechanism
A worm gear, worm technology, applied in mechanical equipment, gear transmission, belt/chain/gear, etc., can solve the problem of wear of the worm wheel 10 and the worm 20, and achieve the effect of reducing wear
Inactive Publication Date: 2017-12-12
SCHAEFFLER TECH AG & CO KG
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Problems solved by technology
[0003] in such as Figure 1a and Figure 1b In the worm gear and worm mechanism of the prior art shown, since the teeth of the worm wheel 10 and the worm 20 have an axial tooth gap L in the axial direction A, when the rotation direction of the driving gear 30 is converted, the worm 20 is driving Under the action of the driving force of the gear 30, the axial backlash L is quickly eliminated by rotation, and a collision impact is generated between the teeth of the worm 20 and the teeth of the worm gear 10, resulting in very serious wear of the worm wheel 10 and the worm 20
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[0023] Specific embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the symbol A means "axial", that is, the direction along the central axis of the worm; in addition, unless otherwise specified, the "axial side" refers to the left side in the figure, "the other axial side" Refers to the right side of the figure. In the present invention, "axial tooth gap L" refers to the gap between the adjacent teeth of the worm wheel and the worm in the above-mentioned axial direction after meshing; and the "gap" or "interval" involved in the present invention both refer The gap or spacing in the above-mentioned axial direction.
[0024] (Schematic structure of a worm gear mechanism)
[0025] Such as Figure 2a and Figure 2b As shown, in this embodiment, the worm gear mechanism according to the present invention includes a worm wheel 1 , a worm 2 , a driving gear 3 , a rotating shaft 4 and two retaining rings 5 , ...
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The invention relates to the field of worms and gears, in particular to a worm and gear mechanism capable of adjusting the axial tooth clearance of a gear and a worm. The worm and gear mechanism comprises the gear and the worm which are engaged with each other. The worm can axially move between a first axial limiting position and a second axial limiting position relative to the gear. When the worm is located at the first axial limiting position, the worm rotates in the first rotating direction, and a first acting face of a tooth portion of the worm abuts against a first acting face of a tooth portion of the gear. When the worm is located at the second axial limiting position, the worm rotates in the second rotating direction, and a second acting face of the tooth portion of the worm abuts against a second acting face of the tooth portion of the gear. Through the adoption of the technical scheme, the worm and gear mechanism can adjust the axial tooth clearance of the gear and the worm when the rotating direction of the worm is changed, and wear of the worm and gear mechanism can be greatly reduced.
Description
technical field [0001] The invention relates to the field of worm gears, in particular to a worm gear mechanism capable of adjusting the axial tooth gap between the worm gear and the worm screw. Background technique [0002] In the prior art worm gear mechanism, such as Figure 1a and Figure 1b As shown, the worm gear mechanism includes a worm wheel 10 and a worm 20 meshing with each other, the drive gear 30 is located on one axial side of the worm 20 and the worm 20 and the drive gear 30 are fixedly connected or formed as one to form an assembly, which can Rotate on the shaft 40. In addition, the worm gear mechanism also includes retaining rings 50 installed on the rotating shaft 40 and respectively located on one axial side of the drive gear 30 (left side in the figure) and on the other axial side of the worm 20 (right side in the figure). , 60, the retaining rings 50, 60 are used as stoppers for the worm 20 and the drive gear 30 in the axial direction A. The retaining...
Claims
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IPC IPC(8): F16H1/16F16H57/12
CPCF16H1/16F16H57/12
Inventor 褚晓兵
Owner SCHAEFFLER TECH AG & CO KG