CN201057259Y - Zigzag tooth of worm wheel and worm - Google Patents
Zigzag tooth of worm wheel and worm Download PDFInfo
- Publication number
- CN201057259Y CN201057259Y CNU2007201101132U CN200720110113U CN201057259Y CN 201057259 Y CN201057259 Y CN 201057259Y CN U2007201101132 U CNU2007201101132 U CN U2007201101132U CN 200720110113 U CN200720110113 U CN 200720110113U CN 201057259 Y CN201057259 Y CN 201057259Y
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- China
- Prior art keywords
- worm
- tooth
- gear
- worm gear
- teeth
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- Gear Transmission (AREA)
Abstract
The utility model provides a zigzag tooth of worm gear that belongs to the mechanical technology field. The zigzag tooth of worm gear solves the problem that current serration tooth of worm gear is without the function of self-locking. The tooth shape of the cross section of the zigzag tooth of worm gear is characterized in that the sidepieces of both sides of the zigzag tooth of worm gear are straight linear but with different slanting angles; the tooth root takes shape of circular arc. The sidepieces of both sides of the zigzag tooth of worm gear are straight linear, which results in the compact structure of the worm gear; the sidepieces of both sides of the zigzag tooth of worm gear are with different slanting angles, which results in self-locking function after the worm gear meshes. Therefore, the warm gear can drive in one direction swimmingly thus saving more labor; when the warm gear drives conversely, resistance is large.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of zigzag fashion teeth of worm and gear.
Background technique
Characteristics such as the worm and gear transmission belongs to the alternating axis transmission, has compact structure, stable drive, and noise is low, and kinematic error is little can be used in deceleration and the accurate transmission mechanism.The worm and gear transmission that present crowd knows mainly contains the transmission of straight-tooth wildhaber-wormaheel toroid helicoids worm, toroid helicoids worm transmission of helical teeth wildhaber-wormaheel and dual lead cylindrical worm transmission.
It is the spur gear of tooth-shape angle with the straight line that the worm gear of straight-tooth wildhaber-wormaheel toroid helicoids worm transmission is one, and the flank of tooth is the plane with the worm-wheel shaft line parallel; Worm screw is a toroid helicoids worm that surrounds worm gear, its Profile of AT be with the worm gear plane as generatrix, the meshing relation generating motion of pressing worm and gear forms envelope surface.The speed of forward and reverse transmission of this straight-tooth wildhaber-wormaheel toroid helicoids worm transmission all is the same, does not also have the function of self-locking, can not be applied in the occasion that needs self-locking.
Helical teeth wildhaber-wormaheel toroid helicoids worm is restricted proposition in view of straight-tooth wildhaber-wormaheel toroid helicoids worm gear range, its worm gear profile of tooth is the tapered plane tooth, tooth plane, both sides all with the inclination angle oblique of worm gear axis to equate, respectively with tangent with two of the worm gear axis symmetrical fully inverted cone surfaces, its worm screw also belongs to planar double enveloping worm, this flank of tooth be profile of tooth plane with the helical teeth wildhaber-wormaheel as generatrix, the meshing relation generating motion of pressing worm and gear forms envelope surface.Though the transmission of this helical teeth wildhaber-wormaheel toroid helicoids worm has solved the restricted problem of gear range of above-mentioned straight-tooth wildhaber-wormaheel toroid helicoids worm transmission, but the speed of forward and reverse transmission also all is the same, the function that does not also have self-locking can not be applied in the occasion that needs self-locking.
The worm screw two lateral tooth flank moduluses of two helical pitch cylindrical worm and worm wheel transmission differ in size, and it does not have the function of self-locking yet.
Summary of the invention
The purpose of this utility model is the above-mentioned problem that exists in the existing worm and gear transmission, and a kind of zigzag fashion teeth that have the worm and gear of auto-lock function are provided.
The purpose of this utility model can realize by following technical proposal: a kind of zigzag fashion teeth of worm and gear is characterized in that the profile of tooth of described teeth cross section is:
The flank portion of a, both sides is linearly;
The angle that the flank portion of b, above-mentioned both sides is tilted is different;
C, tooth root portion are circular-arc.
The profile of tooth of the zigzag fashion teeth of this worm and gear is meant the profile of tooth of each tooth on the shaft section of the profile of tooth of each tooth on the central plane of worm gear and worm screw respectively, and the profile of tooth of worm gear is identical with the profile of tooth of worm screw.The flank portion of both sides linearly makes the compact structure of worm and gear, and the angle difference that the flank portion of both sides is tilted makes worm and gear engagement back form auto-lock function.Like this, worm and gear is transmission swimmingly in one direction, and is more laborsaving; During worm and gear transmission in the opposite direction, resistance is big.Be the circular-arc Undercutting Phenomenon that prevents in tooth root portion.
In the zigzag fashion teeth of above-mentioned worm and gear, described worm gear is the helical teeth worm gear.The axis oblique of the flank of tooth of worm gear and worm gear.
In the zigzag fashion teeth of above-mentioned worm and gear, described worm screw is a toroid helicoids worm.
Compared with prior art, the zigzag fashion teeth engagement driving of this worm and gear can have the function of self-locking, worm gear rotates smooth and easy to a direction when rotary worm, then resistance is big to counter-rotation, can be applied in needs the transmission of auto-lock function occasion, and the flank of tooth that the teeth of worm and gear adopt is the plane, and structure is compact more.
Description of drawings
Structural representation when Fig. 1 is this worm gear and worm screw kneading.
Fig. 2 is the tooth-shape structure schematic representation of the zigzag fashion teeth cross section of this worm and gear.
Fig. 3 is teeth application of this worm and gear and the structural representation on the hand regulation arm.
Among the figure, 1, teeth; 11, flank portion; 12, tooth root; 2, worm gear; 3, worm screw.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, the worm gear 2 described in the zigzag fashion teeth 1 of this worm and gear is the helical teeth worm gear, both the axial direction oblique of the flank of tooth direction of worm gear 2 and worm gear 2; Described worm screw 3 is a toroid helicoids worm.The zigzag fashion teeth 1 of this worm and gear are meant the profile of tooth of each tooth on the shaft section of the profile of tooth of each tooth on the central plane of worm gear 2 and worm screw 3 respectively, and the profile of tooth of worm gear 2 is identical with the profile of tooth of worm screw 3.
The profile of tooth of described teeth 1 cross section is: the flank portion 11 of both sides is linearly, and the angle that the flank portion 11 of above-mentioned both sides is tilted is inequality, and 12 ones on tooth root is circular-arc.The flank portion of both sides linearly makes the compact structure of worm and gear, has the function of self-locking after the angle difference that the flank portion 11 of both sides is tilted meshes worm and gear.Like this, worm and gear is transmission swimmingly in one direction, and is more laborsaving; During worm and gear transmission in the opposite direction, resistance is big.12 ones on tooth root is the circular-arc Undercutting Phenomenon that prevents.
As shown in Figure 3, the zigzag fashion teeth of these worm and worm gear are applied on the hand regulation arm, when using hand regulation arm, the less flank portion 11 of the less flank portion 11 of worm screw 3 inclination angle and worm gear 2 inclination angle contacts, the flank portion 11 that the bigger flank portion 11 of worm screw 3 inclination angle and worm gear 2 inclination angle are bigger contacts, and therefore has the function of self-locking.Rotary worm 3, worm gear 2 rotates smooth and easy to a direction, and it is fixed, more laborsaving to operate steadily; When rotating in the opposite direction, then resistance is big, has prevented travelling mechanism idle running.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as teeth 1, flank portion 11, tooth root 12, worm gear 2, worm screw 3 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (3)
1. the zigzag fashion teeth of a worm and gear is characterized in that, the profile of tooth of described teeth (1) cross section is:
The flank portion (11) of a, both sides is linearly;
The angle that the flank portion (11) of b, above-mentioned both sides is tilted is different;
C, tooth root (12) portion are circular-arc.
2. the zigzag fashion teeth of worm and gear according to claim 1 is characterized in that, described worm gear (2) is the helical teeth worm gear.
3. the zigzag fashion teeth of worm and gear according to claim 1 and 2 is characterized in that, described worm screw (3) is a toroid helicoids worm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201101132U CN201057259Y (en) | 2007-06-06 | 2007-06-06 | Zigzag tooth of worm wheel and worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201101132U CN201057259Y (en) | 2007-06-06 | 2007-06-06 | Zigzag tooth of worm wheel and worm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057259Y true CN201057259Y (en) | 2008-05-07 |
Family
ID=39426101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201101132U Expired - Fee Related CN201057259Y (en) | 2007-06-06 | 2007-06-06 | Zigzag tooth of worm wheel and worm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057259Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111547126A (en) * | 2019-02-12 | 2020-08-18 | 操纵技术Ip控股公司 | Worm shaft for steering assembly |
-
2007
- 2007-06-06 CN CNU2007201101132U patent/CN201057259Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111547126A (en) * | 2019-02-12 | 2020-08-18 | 操纵技术Ip控股公司 | Worm shaft for steering assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20150606 |
|
| EXPY | Termination of patent right or utility model |