CN212455437U - Anti-reversion duplicate gear - Google Patents
Anti-reversion duplicate gear Download PDFInfo
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- CN212455437U CN212455437U CN202021120929.5U CN202021120929U CN212455437U CN 212455437 U CN212455437 U CN 212455437U CN 202021120929 U CN202021120929 U CN 202021120929U CN 212455437 U CN212455437 U CN 212455437U
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- gear
- pivot
- rotating shaft
- limiting block
- pressing
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Abstract
The utility model belongs to the technical field of gear drive's technique and specifically relates to a prevent reversing duplicate gear is related to, and it includes the pivot, and the cover is equipped with gear one in the pivot, still overlaps in the pivot to be equipped with gear two, gear two and pivot normal running fit, and gear two and pivot interference fit, gear two is the same with the reference circle diameter of gear one, and gear two is different with the number of teeth of gear one. The utility model discloses have and make gear structure can only one-way driven effect.
Description
Technical Field
The utility model belongs to the technical field of gear drive's technique and specifically relates to a prevent reversing duplicate gear is related to.
Background
Gear transmission refers to the transmission of motion and power by gear sets, and is widely used in mechanical equipment. The gear transmission has the advantages of accurate transmission, high transmission efficiency, compact structure, reliable work and long service life.
The structure of the conventional transmission gear is shown in fig. 1, and the conventional transmission gear comprises a rotating shaft 1 and a first gear 11, wherein the first gear 11 is a cylindrical gear, and the first gear 11 is sleeved on the rotating shaft 1. When the transmission is performed by the first gear 11, a transmission gear 3 engaged with the first gear 11 is provided. When the transmission gear 3 rotates, the first gear 11 and the rotating shaft 1 can be driven to rotate.
The technical scheme has the following defects: the transmission gear and the first gear can be mutually transmitted, and when the transmission gear is used in a one-way transmission occasion, the rotating shaft and the first gear can drive the transmission gear to rotate, so that a machine is easily damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prevent reversing duplicate gear, it has the effect that makes gear structure can only one-way transmission to the not enough of prior art existence.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a prevent reversing duplicate gear, includes the pivot, the cover is equipped with gear one in the pivot, it is equipped with gear two still to overlap in the pivot, gear two and pivot normal running fit, and gear two and pivot interference fit, gear two is the same with the reference circle diameter of gear one, and gear two is different with the number of teeth of gear one.
Through adopting above-mentioned technical scheme, overlap and establish gear one and gear two in the pivot, and gear one, gear two all mesh with drive gear. When the transmission gear rotates actively, the first gear and the second gear rotate along with the transmission gear at the same time, the second gear overcomes the friction force between the second gear and the rotating shaft to rotate, the rotating speeds of the first gear and the second gear are different, and the transmission gear can drive the rotating shaft to rotate through the gear.
When the rotating shaft rotates actively, the first gear and the second gear rotate simultaneously, and the rotating speeds of the first gear and the second gear are the same. When the first gear and the second gear rotate by the same angle, the gear teeth of one gear of the first gear and the second gear are meshed with the gear teeth of the transmission gear one by one, and the gear teeth of the other gear are clamped with the gear teeth of the transmission gear, so that the transmission gear is prevented from rotating.
The present invention may be further configured in a preferred embodiment as: one side of the second gear, which is back to the first gear, is provided with a pressing sheet and a limiting block, the pressing sheet and the limiting block are all sleeved on the rotating shaft, each pressing sheet is tightly abutted to the second gear, the limiting block is located on one side, which is back to the second gear, of the pressing sheet, a buckle is arranged between the limiting block and the pressing sheet, and the two sides of the buckle are respectively located on the limiting block and the pressing sheet and tightly abutted to the pressing sheet.
Through adopting above-mentioned technical scheme, set up preforming, buckle and stopper in the one side of gear two dorsad gear one to support gear two and gear one tightly, can reduce the possibility that gear two slided along the pivot axis direction when this gear structure during operation, thereby guarantee gear two and drive gear and keep meshing.
The present invention may be further configured in a preferred embodiment as: the pressing pieces are arc-shaped pieces, the concave arc surface of each pressing piece faces the second gear, and two ends of each pressing piece are tightly abutted to the second gear.
Through adopting above-mentioned technical scheme, set up the preforming into the arc piece to with the indent arc surface of preforming towards gear two, then when gear two slided to gear one dorsad, the preforming warp and stored energy, the preforming resets afterwards, and promotes gear two and slides towards gear one, makes gear two and gear one keep offsetting.
The present invention may be further configured in a preferred embodiment as: the number of the pressing sheets is at least one, and the pressing sheets are uniformly arranged along the circumferential direction of the rotating shaft.
Through adopting above-mentioned technical scheme, set up the preforming into a plurality ofly, can improve the preforming and hinder the ability that gear two slided.
The present invention may be further configured in a preferred embodiment as: and the end face of the second gear, which is back to the first gear, is provided with a holding groove for holding the pressing sheet, and the pressing sheet is abutted to the groove bottom of the holding groove.
Through adopting above-mentioned technical scheme, set up the holding tank on gear two, can reduce the installation space that the preforming occupy when installing this structure.
The present invention may be further configured in a preferred embodiment as: the shape of the buckle is provided with a poking hole.
Through adopting above-mentioned technical scheme, set up on the buckle and dial the hole, when operating personnel dismantled the buckle, can conveniently be through dialling the hole to the buckle application of force to extract the buckle.
The present invention may be further configured in a preferred embodiment as: the buckle is provided with a guide inclined plane towards the top edge of the side surface of the rotating shaft.
Through adopting above-mentioned technical scheme, set up the guide inclined plane at the buckle towards the side topside of pivot, can make things convenient for operating personnel to block the buckle into between preforming and the stopper.
The present invention may be further configured in a preferred embodiment as: and a third gear is further sleeved on the rotating shaft and synchronously rotates with the rotating shaft.
Through adopting above-mentioned technical scheme, set up gear three on the pivot, the pivot can be through gear three with motion and power to next component transmission.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the effect that the gear structure can only transmit in one direction can be achieved by arranging the rotating shaft, the first gear and the second gear;
2. through the arrangement of the pressing piece, the buckle and the limiting block, the effect of ensuring that the second gear is meshed with the transmission gear can be achieved;
3. through setting up the holding tank, can play the effect that reduces the installation space that the preforming occupy.
Drawings
FIG. 1 is a schematic view of a transmission gear according to the prior art;
FIG. 2 is a schematic view of the entire structure of embodiment 1;
fig. 3 is a schematic diagram for embodying the snap structure in embodiment 2.
In the figure, 1, a rotating shaft; 11. a first gear; 12. a second gear; 121. accommodating grooves; 13. a third gear; 2. a limiting block; 21. tabletting; 22. buckling; 221. poking holes; 222. a guide ramp; 3. a transmission gear.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
referring to fig. 2, for the utility model discloses a prevent reversing duplicate gear, including pivot 1, the cover is equipped with gear three 13, gear one 11 and gear two 12 in proper order on the pivot 1. The third gear 13 and the first gear 11 rotate synchronously with the rotating shaft 1, and the third gear 13 and the first gear 11 are fixed in a gluing manner; the second gear 12 is in running fit with the rotating shaft 1, and the second gear 12 is in interference fit with the rotating shaft 1.
Referring to fig. 2, the reference circle diameters of the first gear 11 and the second gear 12 are the same, a transmission gear 3 is further rotatably arranged on one side of the gear structure, the axis of the transmission gear 3 is parallel to the axis of the rotating shaft 1, and the gear teeth of the transmission gear 3 are meshed with the gear teeth of the first gear 11 and the gear teeth of the second gear 12.
Referring to fig. 2, the number of teeth of the first gear 11 is smaller than that of the second gear 12, and the transmission gear 3 is meshed with both the first gear 11 and the second gear 12. When the transmission gear 3 actively rotates, the first gear 11 and the second gear 12 can be driven to rotate simultaneously. The rotating speed of the first gear 11 is greater than that of the second gear 12, the first gear 11 drives the rotating shaft 1 to rotate, and meanwhile, the second gear 12 overcomes the friction force between the second gear and the rotating shaft 1 and rotates relative to the rotating shaft 1. When the rotating shaft 1 rotates actively, the first gear 11 and the second gear 12 rotate along with the rotation of the rotating shaft 1, and the rotating speeds of the first gear 11 and the second gear 12 are the same. In the same radian range, the number of the gear teeth of the first gear 11 is smaller than that of the gear teeth of the second gear 12, the gear teeth of the second gear 12 are meshed with the gear teeth of the transmission gear 3 one by one along with the rotation of the rotating shaft 1, and the gear teeth of the first gear 11 are locked with the gear teeth of the transmission gear 3, so that the rotating shaft 1 cannot transmit power to the transmission gear 3.
Referring to fig. 2, a limiting block 2 is sleeved on one side, back to the first gear 11, of the second gear 12, the main body of the limiting block 2 is cylindrical, and the axis of the limiting block 2 coincides with the axis of the rotating shaft 1. A first through hole is formed in the limiting block 2, the limiting block 2 is sleeved on the rotating shaft 1 through the through hole, and the limiting block 2 is fixedly connected with the rotating shaft 1 in a splicing mode.
Referring to fig. 2, a circular accommodating groove 121 is formed in one side of the second gear 12 facing away from the gear, and an axis of the accommodating groove 121 coincides with an axis of the rotating shaft 1. Be equipped with two preforming 21 in the holding tank 121, two preforming 21 are all established on pivot 1, all are equipped with circular shape through-hole two on every preforming 21, and preforming 21 establishes on pivot 1 through the through-hole two sets, and the diameter of through-hole two is greater than the diameter of stopper 2.
Referring to fig. 2, the two pressing pieces 21 are arranged along the axial direction of the rotating shaft 1, and the facing sides of the two pressing pieces 21 are attached to each other. Each pressing sheet 21 is an arc-shaped surface, and the concave arc surface of each pressing sheet 21 faces the second gear 12. Each pressing piece 21 abuts against the groove bottom of the accommodating groove 121 through both ends.
Referring to fig. 2, a buckle 22 is arranged between the two pressing sheets 21 and the limiting block 2, the buckle 22 is shaped like a C-shaped plate, the concave side of the buckle 22 is arranged along the vertical direction, and the concave side of the buckle 22 is attached to the side of the rotating shaft 1. Two shifting holes 221 are formed in the concave side face of the buckle 22, the two shifting holes 221 are arranged along the circumferential direction of the rotating shaft 1, and each shifting hole 221 penetrates through two sides of the buckle 22 along the axis direction of the rotating shaft 1. When the operator detaches the buckle 22, the operator can conveniently apply force to the buckle 22 through the pulling hole 221, and then detach the buckle 22.
The implementation principle of the embodiment is as follows: when the gear structure is used, only the first gear 11 and the second gear 12 are required to be meshed with the transmission gear 3. When the transmission gear 3 rotates, the first gear 11 and the second gear 12 can be driven to rotate simultaneously, the rotating speeds of the first gear 11 and the second gear 12 are different, and the first gear 11 drives the rotating shaft 1 and the third gear 13 to rotate simultaneously. When the rotating shaft 1 rotates, the gear teeth of the first gear 11 and the gear teeth of the transmission gear 3 are clamped, so that the rotating shaft 1 is prevented from driving the transmission gear 3 to rotate, the gear structure can only perform one-way transmission, and a machine cannot be damaged easily when the gear structure is used in one-way transmission occasions.
Example 2:
referring to fig. 3, the difference from embodiment 1 is that the top edge of the concave side of the clip 22 is chamfered to form a guide slope 222. The guiding inclined surface 222 is provided to facilitate the operator to clip the buckle 22 between the pressing sheet 21 (see fig. 2) and the limiting block 2 (see fig. 2).
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a prevent reversing duplicate gear, includes pivot (1), the cover is equipped with gear (11) on pivot (1), its characterized in that: still the cover is equipped with gear two (12) on pivot (1), gear two (12) and pivot (1) normal running fit, and gear two (12) and pivot (1) interference fit, gear two (12) are the same with the reference circle diameter of gear one (11), and the number of teeth of gear two (12) and gear one (11) is different.
2. An anti-reverse double gear according to claim 1, wherein: one side of the gear II (12) back to the gear I (11) is provided with a pressing piece (21) and a limiting block (2), the pressing piece (21) and the limiting block (2) are all sleeved on the rotating shaft (1), each pressing piece (21) is tightly abutted to the gear II (12), the limiting block (2) is located on one side of the pressing piece (21) back to the gear II (12), a buckle (22) is arranged between the limiting block (2) and the pressing piece (21), and the two sides of the buckle (22) are respectively located on the limiting block (2) and the pressing piece (21) and tightly abutted to the limiting block (2) and the pressing piece (21).
3. An anti-reverse double gear according to claim 2, wherein: the pressing pieces (21) are arc-shaped pieces, the concave arc surface of each pressing piece (21) faces to the second gear (12), and two ends of each pressing piece (21) are tightly abutted to the second gear (12).
4. An anti-reverse double gear according to claim 2, wherein: the number of the pressing sheets (21) is at least one, and the pressing sheets (21) are uniformly arranged along the circumferential direction of the rotating shaft (1).
5. An anti-reverse double gear according to claim 2, wherein: an accommodating groove (121) for accommodating the pressing sheet (21) is formed in the end face, back to the first gear (11), of the second gear (12), and the pressing sheet (21) abuts against the groove bottom of the accommodating groove (121).
6. An anti-reverse double gear according to claim 2, wherein: the shape of the buckle (22) is provided with a poking hole (221).
7. An anti-reverse double gear according to claim 2, wherein: the top edge of the side surface of the buckle (22) facing the rotating shaft (1) is provided with a guide inclined surface (222).
8. An anti-reverse double gear according to claim 1, wherein: still the cover is equipped with gear three (13) on pivot (1), gear three (13) and pivot (1) synchronous revolution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021120929.5U CN212455437U (en) | 2020-06-16 | 2020-06-16 | Anti-reversion duplicate gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021120929.5U CN212455437U (en) | 2020-06-16 | 2020-06-16 | Anti-reversion duplicate gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212455437U true CN212455437U (en) | 2021-02-02 |
Family
ID=74470315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021120929.5U Active CN212455437U (en) | 2020-06-16 | 2020-06-16 | Anti-reversion duplicate gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212455437U (en) |
-
2020
- 2020-06-16 CN CN202021120929.5U patent/CN212455437U/en active Active
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