CN211175268U - Helical gear with self-locking structure - Google Patents
Helical gear with self-locking structure Download PDFInfo
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- CN211175268U CN211175268U CN201922022506.3U CN201922022506U CN211175268U CN 211175268 U CN211175268 U CN 211175268U CN 201922022506 U CN201922022506 U CN 201922022506U CN 211175268 U CN211175268 U CN 211175268U
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- helical gear
- locking structure
- locking
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Abstract
The utility model relates to a powder metallurgy gear manufacturing field, concretely relates to helical gear with self-locking structure, including independent helical gear body and independent self-locking structure, self-locking structure connects the central point at the helical gear body and puts, the helical gear body is provided with the last shaft hole that link up them with self-locking structure's center. The utility model discloses a helical gear with auto-lock structure, application components of a whole that can function independently design, the root can produce the problem of crackle when effectively having avoided auto-lock structure and helical gear body integrated into one piece, and finished product hardness is high, and the wearability is good, has filled the demand blank on the market.
Description
Technical Field
The utility model relates to a powder metallurgy gear manufacturing field, concretely relates to helical gear with auto-lock structure.
Background
When the helical gear transmits motion and power, the helical gear has the advantages of stable transmission ratio, accurate and reliable transmission motion, high transmission efficiency, low noise and the like, and is widely applied to industries such as automobiles, tools, electric appliances and the like. However, with the technical development of industries such as automobiles, tools, electrical appliances and the like, the demand for the helical gear with the self-locking structure is higher and higher.
The existing method usually uses powder metallurgy to manufacture the bevel gear, but the method has the problems of difficult demoulding, high breakage rate of a forming die, difficult density improvement and the like, so that the mass production of the bevel gear cannot be realized, in the processing process, the adjusting space of lower inner punching and lower outer punching is limited, a self-locking structure on the bevel gear is easy to generate green body cracks, and the yield is low. In order to avoid the above problems, a steel material is used for machining a helical gear on the market, but the method has high manufacturing cost and poor consistency of the manufactured product, and thus the method cannot meet the requirements of practical application. Therefore, the helical gear with a self-locking structure, which is simple to manufacture and high in yield, is urgently needed in the market.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a new helical gear with self-locking structure, its simple structure, easy manufacturing can satisfy actual need.
The utility model discloses a concrete technical scheme as follows:
a helical gear with a self-locking structure comprises an independent helical gear body and the independent self-locking structure, wherein the self-locking structure is connected to the center of the helical gear body, and shaft pressing holes penetrating through the helical gear body and the self-locking structure are formed in the centers of the helical gear body and the self-locking structure.
The central position of the helical gear body is provided with a press-fit central hole, and the press-fit central hole can accommodate the self-locking structure.
The helical gear body is provided with a solder filling hole.
The self-locking structure comprises a self-locking boss and a pressing body, wherein the pressing body is arranged on one surface of the self-locking boss in a protruding mode, the pressing body is located at the center of the self-locking boss, a pressing shaft hole is formed in the center of the self-locking boss and the center of the pressing body, and the pressing body is connected with the helical gear body.
The pressing body is connected with the helical gear body in an interference fit mode.
Wherein, the auto-lock boss is provided with the auto-lock keyway.
The number of the self-locking key grooves is at least two, and the self-locking key grooves are centrosymmetric relative to the center of the self-locking boss.
Advantageous effects
The utility model discloses a helical gear with auto-lock structure, application components of a whole that can function independently design, the root can produce the problem of crackle when effectively having avoided auto-lock structure and helical gear body integrated into one piece, and finished product hardness is high, and the wearability is good, has filled the demand blank on the market.
Drawings
FIG. 1 is a schematic view of the present invention
FIG. 2 is a cross-sectional view taken along line A-A of the present invention
FIG. 3 is a schematic view of the helical gear body of the present invention
FIG. 4 is a cross-sectional view of the helical gear body of the present invention at A-A
FIG. 5 is a schematic view of the self-locking structure of the present invention
FIG. 6 is a cross-sectional view of the self-locking structure of the present invention at A-A
Wherein, 1 is helical gear body, 2 is self-locking structure, 3 is the pressure shaft hole, 4 is the solder filling hole, 5 is the press fit centre bore, 6 is the self-locking keyway, 21 is the auto-lock boss, 22 is the press fit body.
Detailed Description
Helical gear with auto-lock structure, as shown in fig. 1, fig. 2, including independent helical gear body 1 and independent auto-lock structure 2, the central point that connects at helical gear body 1 from auto-lock structure 2 puts, helical gear body 1 and auto-lock structure 2's center is provided with the last shaft hole 3 that link up it. The utility model discloses in practical application, the gear shaft can insert in central pressure shaft hole 3 to the drive helical gear rotates or takes place the auto-lock. Through the structure, the helical gear has the self-locking function, and the helical gear is simple in implementation mode, easy to machine and high in yield.
As shown in fig. 3 and 4, in this embodiment, a press-fit center hole 5 is formed in the center of the helical gear body 1, the press-fit center hole 5 can accommodate the self-locking structure 2, and the self-locking structure 2 can be press-fit in the press-fit center hole 5 to integrate the two into a whole, so that the helical gear of the present invention has the self-locking structure. Wherein preferred, be provided with solder filling hole 4 on the helical gear body 1, solder filling hole 4 can be used for filling the solder to can firmly weld together through the sintering welding after self-locking structure 2 is joined in marriage with helical gear body 1 pressure, realize the utility model discloses a take shape smoothly and high density suppression, greatly reduced mould breakage rate has effectively avoided the problem that the root probably produced the crackle when self-locking structure 2 and helical gear body 1 integrated into one piece.
In this embodiment, the self-locking structure 2 is preferably as shown in fig. 5 and 6, and includes a self-locking boss 21 and a press-fit body 22, wherein one surface of the self-locking boss 21 is provided with the press-fit body 22 in an outward protruding manner, the press-fit body 22 is located at a central position of the self-locking boss 21, and the centers of the self-locking boss 21 and the press-fit body 22 are provided with a through press shaft hole 3. The press-fit body 22 conforms to the contour of the press-fit central hole 5. As shown in fig. 5, the auto-lock boss 21 is provided with the auto-lock keyway 6, and the auto-lock function of the utility model is realized through the cooperation of the gear shaft and the auto-lock keyway 6. Specifically, the number of the self-locking key grooves 6 is at least 2, and the self-locking key grooves 6 should be centrosymmetric with respect to the central position of the self-locking boss 21.
The present invention is not limited to the shapes of the press-fit center hole 5 and the press-fit body 22, and may be regular circular holes or other shapes. The press-fit body 22 is connected with the press-fit central hole 5 through interference fit.
Claims (7)
1. The helical gear with the self-locking structure is characterized by comprising an independent helical gear body (1) and an independent self-locking structure (2), wherein the self-locking structure (2) is connected to the central position of the helical gear body (1), and a shaft pressing hole (3) penetrating through the helical gear body (1) and the self-locking structure (2) is formed in the centers of the helical gear body (1) and the self-locking structure (2).
2. The helical gear according to claim 1, wherein the helical gear body (1) is provided with a press-fit center hole (5) at a central position, and the press-fit center hole (5) can accommodate the self-locking structure (2).
3. The helical gear according to claim 1, wherein the helical gear body (1) is provided with a solder filling hole (4).
4. The helical gear according to claim 1, wherein the self-locking structure (2) comprises a self-locking boss (21) and a press-fit body (22), one surface of the self-locking boss (21) is provided with the press-fit body (22) in a protruding manner, the press-fit body (22) is located at the center of the self-locking boss (21), the press-fit shaft hole (3) is arranged at the centers of the self-locking boss (21) and the press-fit body (22), and the press-fit body (22) is connected with the helical gear body (1).
5. The helical gear according to claim 4, wherein the press-fit body (22) is connected with the helical gear body (1) in an interference fit manner.
6. The helical gear according to claim 4, wherein the self-locking boss (21) is provided with a self-locking keyway (6).
7. The helical gear according to claim 6, wherein said self-locking keyways (6) are at least two, said self-locking keyways (6) being centrally symmetric about a central position of the self-locking boss (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022506.3U CN211175268U (en) | 2019-11-21 | 2019-11-21 | Helical gear with self-locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022506.3U CN211175268U (en) | 2019-11-21 | 2019-11-21 | Helical gear with self-locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211175268U true CN211175268U (en) | 2020-08-04 |
Family
ID=71806620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922022506.3U Active CN211175268U (en) | 2019-11-21 | 2019-11-21 | Helical gear with self-locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211175268U (en) |
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2019
- 2019-11-21 CN CN201922022506.3U patent/CN211175268U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A helical gear with self-locking structure Effective date of registration: 20201221 Granted publication date: 20200804 Pledgee: Jiangyan Jiangsu rural commercial bank Limited by Share Ltd. Pledgor: JIANGSU ZHIZAO NEW MATERIAL Co.,Ltd. Registration number: Y2020320000247 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |