CN203641422U - Screw rod component with improved structure - Google Patents
Screw rod component with improved structure Download PDFInfo
- Publication number
- CN203641422U CN203641422U CN201320675251.0U CN201320675251U CN203641422U CN 203641422 U CN203641422 U CN 203641422U CN 201320675251 U CN201320675251 U CN 201320675251U CN 203641422 U CN203641422 U CN 203641422U
- Authority
- CN
- China
- Prior art keywords
- bar section
- straight bar
- screw thread
- external screw
- straight rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a screw rod component with an improved structure. A screw rod comprises a first straight rod section, a second straight rod section, a third straight rod section and a fourth straight rod section; the diameters of the second straight rod section and the fourth straight rod section are the same; the diameter values of the second straight rod section and the fourth straight rod section are larger than those of the first straight rod section and the third straight rod section; a first external thread is arranged on the outer circumferential wall of the second straight rod section and is a single-line right-handed rotation trapezoid thread; a first internal thread on the inner circumferential wall of a center hole of a first screw cap is meshed with the first external thread; a second external thread is arranged on the outer circumferential wall of the fourth straight rod section and is a single-line left-handed rotation trapezoid thread; a second internal thread on the inner circumferential wall of a center hole of a second screw cap is meshed with the second external thread; the first external thread drives the first screw cap to move up and down; the second external thread drives the second screw cap to move up and down; the rotation directions of the first external thread and the second external thread are different, so that the motion directions of the first screw cap and the second screw cap are completely opposite during rotation; therefore, the screw rod component can drive two driven pieces to move oppositely at the same time.
Description
Technical field
The utility model relates to screw mandrel technical field, relates in particular to a kind of structure improved screw component.
Background technique
As a kind of driving mechanism of important kind, lead screw transmission mechanism is very general in application in machine equipments.Utilizing lead screw transmission mechanism to drive in transmission part straight-line process, existing screw mandrel can not drive two transmission part reversing motions simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of structure improved screw component for the deficiencies in the prior art, and this structure improved screw component can drive two transmission part reversing motions simultaneously.
For achieving the above object, the utility model is achieved through the following technical solutions.
A kind of structure improved screw component, include the screw mandrel of vertical extension, screw mandrel includes the first straight bar section, the second straight bar section, the 3rd straight bar section and the 4th straight bar section that connect successively from top to bottom, the first straight bar section, the second straight bar section, the 3rd straight bar section and the 4th straight bar section are integral type structure, the diameter value of the second straight bar section equates with the diameter value of the 4th straight bar section, and the diameter value of the second straight bar section, the 4th straight bar section is large compared with the diameter value of the first straight bar section, the 3rd straight bar section; The periphery wall of the second straight bar section is provided with the first external screw thread, the first external screw thread is the trapezoidal thread of single line dextrorotation, the tooth form angle of the first external screw thread is that 30 ° and pitch are 4mm, the second straight bar section can be set with the first nut relatively up and downly, the center hole inner circle wall of the first nut core is provided with the first internal screw thread matching with the first external screw thread, and the first external screw thread engages with the first internal screw thread; The periphery wall of the 4th straight bar section is provided with the second external screw thread, the second external screw thread is the left-handed trapezoidal thread of single line, the tooth form angle of the second external screw thread is that 30 ° and pitch are 4mm, the 4th straight bar section can be set with the second nut relatively up and downly, the center hole inner circle wall of the second nut core is provided with the second internal screw thread matching with the second external screw thread, and the second external screw thread engages with the second internal screw thread.
The beneficial effects of the utility model are: the structure improved screw component of one described in the utility model, its screw mandrel comprises the first straight bar section, the second straight bar section, the 3rd straight bar section and the 4th straight bar section, the diameter value of the second straight bar section equates with the diameter value of the 4th straight bar section, and the diameter value of the second straight bar section, the 4th straight bar section is large compared with the diameter value of the first straight bar section, the 3rd straight bar section; The periphery wall of the second straight bar section arranges the first external screw thread, and the first external screw thread is the trapezoidal thread of single line dextrorotation, and the second straight bar section is set with the first nut, and the center hole inner circle wall of the first nut core arranges the first internal screw thread, and the first external screw thread engages with the first internal screw thread; The periphery wall of the 4th straight bar section arranges the second external screw thread, and the second external screw thread is the left-handed trapezoidal thread of single line, and the 4th straight bar section is set with the second nut, and the center hole inner circle wall of the second nut core arranges the second internal screw thread, and the second external screw thread engages with the second internal screw thread.The first external screw thread of the second straight bar section drives the first nut to move up and down, and the second external screw thread of the 4th straight bar section drives the second nut to move up and down; Wherein, because the rotation direction of the first external screw thread and the second external screw thread is different, in the time of screw mandrel unitary rotation, the first nut is completely contrary with the moving direction of the second nut, and the first nut and the second nut synchronization motion.So the utility model can drive two transmission part reversing motions simultaneously.
Accompanying drawing explanation
Utilize accompanying drawing to be further detailed the utility model below, but the embodiment in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation at another visual angle of the utility model.
In Fig. 1 and Fig. 2, include:
1---screw mandrel 2---first straight bar section
3---second straight bar section 4---the 3rd straight bar section
5---the 4th straight bar section 6---first external screw thread
7---first nut 8---second external screw thread
9---the second nut.
Embodiment
Below in conjunction with concrete mode of execution, the utility model is described.
As depicted in figs. 1 and 2, a kind of structure improved screw component, include the screw mandrel 1 of vertical extension, screw mandrel 1 includes the first straight bar section 2, the second straight bar section 3, the 3rd straight bar section 4 and the 4th straight bar section 5 that connect successively from top to bottom, the first straight bar section 2, the second straight bar section 3, the 3rd straight bar section 4 and the 4th straight bar section 5 are integral type structure, the diameter value of the second straight bar section 3 equates with the diameter value of the 4th straight bar section 5, and the diameter value of the second straight bar section 3, the 4th straight bar section 5 is large compared with the diameter value of the first straight bar section 2, the 3rd straight bar section 4; The periphery wall of the second straight bar section 3 is provided with the first external screw thread 6, the first external screw thread 6 is the trapezoidal thread of single line dextrorotation, the tooth form angle of the first external screw thread 6 is that 30 ° and pitch are 4mm, the second straight bar section 3 can be set with the first nut 7 relatively up and downly, the center hole inner circle wall of the first nut 7 cores is provided with the first internal screw thread matching with the first external screw thread 6, and the first external screw thread 6 engages with the first internal screw thread; The periphery wall of the 4th straight bar section 5 is provided with the second external screw thread 8, the second external screw thread 8 is the left-handed trapezoidal thread of single line, the tooth form angle of the second external screw thread 8 is that 30 ° and pitch are 4mm, the 4th straight bar section 5 can be set with the second nut 9 relatively up and downly, the center hole inner circle wall of the second nut 9 cores is provided with the second internal screw thread matching with the second external screw thread 8, and the second external screw thread 8 engages with the second internal screw thread.
In the utility model working procedure, the first external screw thread 6 of the second straight bar section 3 drives the first nut 7 to move up and down, and the second external screw thread 8 of the 4th straight bar section 5 drives the second nut 9 to move up and down; Wherein, because the rotation direction of the first external screw thread 6 and the second external screw thread 8 is different, in the time of screw mandrel 1 unitary rotation, the first nut 7 is completely contrary with the moving direction of the second nut 9, and the first nut 7 and the second nut 9 synchronization motions.
Comprehensive above-mentioned situation is known, and the utility model can drive two nut synchronous backward motions simultaneously, and the utility model can drive two transmission part reversing motions simultaneously.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (1)
1. a structure improved screw component, it is characterized in that: the screw mandrel (1) that includes vertical extension, screw mandrel (1) includes the first straight bar section (2) connecting successively from top to bottom, the second straight bar section (3), the 3rd straight bar section (4) and the 4th straight bar section (5), the first straight bar section (2), the second straight bar section (3), the 3rd straight bar section (4) and the 4th straight bar section (5) are integral type structure, the diameter value of the second straight bar section (3) equates with the diameter value of the 4th straight bar section (5), the second straight bar section (3), the diameter value of the 4th straight bar section (5) is compared with the first straight bar section (2), the diameter value of the 3rd straight bar section (4) is large, the periphery wall of the second straight bar section (3) is provided with the first external screw thread (6), the first external screw thread (6) is the trapezoidal thread of single line dextrorotation, the tooth form angle of the first external screw thread (6) is that 30 ° and pitch are 4mm, the second straight bar section (3) can be set with the first nut (7) relatively up and downly, the center hole inner circle wall of the first nut (7) core is provided with the first internal screw thread matching with the first external screw thread (6), and the first external screw thread (6) engages with the first internal screw thread, the periphery wall of the 4th straight bar section (5) is provided with the second external screw thread (8), the second external screw thread (8) is the left-handed trapezoidal thread of single line, the tooth form angle of the second external screw thread (8) is that 30 ° and pitch are 4mm, the 4th straight bar section (5) can be set with the second nut (9) relatively up and downly, the center hole inner circle wall of the second nut (9) core is provided with the second internal screw thread matching with the second external screw thread (8), and the second external screw thread (8) engages with the second internal screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675251.0U CN203641422U (en) | 2013-10-30 | 2013-10-30 | Screw rod component with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675251.0U CN203641422U (en) | 2013-10-30 | 2013-10-30 | Screw rod component with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641422U true CN203641422U (en) | 2014-06-11 |
Family
ID=50872669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320675251.0U Expired - Fee Related CN203641422U (en) | 2013-10-30 | 2013-10-30 | Screw rod component with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641422U (en) |
-
2013
- 2013-10-30 CN CN201320675251.0U patent/CN203641422U/en not_active Expired - Fee Related
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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: 20140611 Termination date: 20141030 |
|
| EXPY | Termination of patent right or utility model |