CN210565530U - Forward and reverse two-way fastening screw - Google Patents
Forward and reverse two-way fastening screw Download PDFInfo
- Publication number
- CN210565530U CN210565530U CN201921230778.6U CN201921230778U CN210565530U CN 210565530 U CN210565530 U CN 210565530U CN 201921230778 U CN201921230778 U CN 201921230778U CN 210565530 U CN210565530 U CN 210565530U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- pressing block
- excircle
- sleeve
- 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
Links
- 230000002441 reversible effect Effects 0.000 title claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a positive and negative two-way fastening screw, its characterized in that: including screw rod sleeve and screw rod, the telescopic excircle of screw rod is equipped with the external screw thread, outer hexagon head is connected at the telescopic excircle top of screw rod, it is eccentric to have between telescopic hole of screw rod and the excircle, the screw rod passes from the telescopic hole of screw rod and connects soon with the telescopic hole screw thread of screw rod, the telescopic bottom below of screw rod is equipped with the compact heap, the compact heap is connected in the lower rod end of screw rod, can carry out relative rotation between compact heap and the screw rod, the below of compact heap is equipped with the retaining ring, the retaining ring is fixed with the lower rod end of screw rod and links to each other, the telescopic bottom terminal surface of screw rod is fixed with the stopper, the stopper carries out circumference spacingly to the rotation of compact heap, the. The utility model discloses can follow positive and negative two-way compressing tightly upper and lower connector, solve the connection problem of upper and lower connector under the special installation occasion.
Description
Technical Field
The utility model relates to a fastener product, concretely relates to positive and negative two-way fastening screw.
Background
For the connection between the upper and lower connecting pieces, a bolt fastening mode is adopted many times, at this time, a threaded hole is generally required to be arranged in the mounting hole of the lower connecting piece, if the threaded hole cannot be arranged in the mounting hole of the lower connecting piece, a nut is screwed up from the bottom of the bolt, and the lower connecting piece is fastened by screwing the nut, but when the bottom space of the lower connecting piece is small, the mounting hole is internally arranged or the nut cannot be arranged and pulled, the connection of the upper and lower connecting pieces at this time has problems.
Disclosure of Invention
The utility model aims to provide a not enough to prior art, the utility model aims at providing a can follow positive and negative two-way and compress tightly upper and lower connector, solve the positive and negative two-way fastening screw of the upper and lower connector connection problem under the special installation occasion.
The utility model discloses a through following technical scheme implementation:
two-way fastening screw of positive and negative, its characterized in that: the screw rod is connected with an outer hexagon head at the top of the excircle of the screw rod sleeve, eccentricity exists between the inner hole of the screw rod sleeve and the excircle, the screw rod penetrates through the inner hole of the screw rod sleeve from the inner hole of the screw rod sleeve and is in threaded connection with the inner hole of the screw rod sleeve, a pressing block is arranged below the bottom of the screw rod sleeve and is connected to the lower rod end of the screw rod, relative rotation can be carried out between the pressing block and the screw rod, a check ring is arranged below the pressing block and is fixedly connected with the lower rod end of the screw rod, a limiting block is fixed on the bottom end face of the screw rod sleeve, the limiting block circumferentially limits the rotation of the pressing block, and when the pressing block is not in contact with the; the pressing block is at the rotation starting position, the whole periphery of the outer edge of the pressing block is positioned in the extension space surrounded by the excircle of the screw rod sleeve, and the local periphery of the outer edge of the pressing block can leave the extension space surrounded by the excircle of the screw rod sleeve at the rotation finishing position.
The positive and negative two-way fastening screw of above-mentioned technical scheme, the theory of operation is: in the mounting hole of upper and lower connector is down packed into from the last fastening screw, the external screw thread of screw rod sleeve excircle carries out the screw thread and connects soon with the internal thread of last connector mounting hole, after the screw thread connects soon and targets in place, the telescopic outer hexagon head of screw rod can compress tightly last connector from the above-mentioned direction, next toward withdrawing from screw rod sleeve direction and twist the screw rod, the compact heap rotates along with the screw rod is synchronous, after the maximum angle is rotated to the compact heap, the stopper can be touch to the compact heap, then compact heap stop rotation, the outer fringe periphery of compact heap has the local epitaxial space that leaves the screw rod sleeve excircle and enclose this moment, continue to twist the screw rod, the screw rod can drive the compact heap lifting through the retaining ring, make the compact heap compress tightly the connector from following direction to lower connector. The upper and lower connecting pieces can be compressed from both the positive and negative directions, so that the problem of connection of the upper and lower connecting pieces in special installation occasions mentioned in the background art is solved.
Preferably, the inner hole of the pressing block is in transition fit with the outer circle of the lower rod end of the screw rod. The design structure is simple, and the compressing block can be conveniently rotated synchronously along with the screw rod when not touching the limiting block.
Preferably, the pressing block is an eccentric circle and is provided with a local notch, the local notch corresponds to the limiting block, and the diameter of the outer circle of the eccentric circle is equal to or slightly smaller than that of the outer circle of the screw sleeve. The design can ensure that the outer edge periphery of the pressing block has the largest area and partially leaves an extension space surrounded by the outer circle of the screw rod sleeve when the pressing block is at the position of the largest rotation angle, so that the lower connecting piece can be reliably fastened.
Drawings
The utility model discloses there is following figure:
figure 1 is a schematic structural diagram of the present invention (the compact block is at the rotation initial position),
figure 2 is a bottom view in elevation of figure 1,
figure 3 is a schematic structural diagram of the present invention (the compact block is at the final rotation position),
fig. 4 is a bottom view of fig. 3.
Detailed Description
As shown in the figures, the positive and negative two-way fastening screw of the utility model comprises a screw sleeve 1 and a screw 2, the outer circle 4 of the screw sleeve is provided with an external thread 10, the top of the outer circle 4 of the screw sleeve is connected with an outer hexagon head 9, an eccentricity is arranged between the inner hole 3 and the outer circle 4 of the screw sleeve, the screw 2 passes through the inner hole 3 of the screw sleeve and is screwed with the inner hole 3 of the screw sleeve, a pressing block 5 is arranged below the bottom of the screw sleeve 1, the pressing block 5 is connected with the lower rod end of the screw 2, the inner hole of the pressing block 5 is in transition fit with the outer circle of the lower rod end of the screw 2, the pressing block 5 and the screw 2 can rotate relatively, a check ring 6 is arranged below the pressing block 5, the check ring 6 is fixedly connected with the lower rod end of the screw 2, the bottom end face of the screw sleeve 1 is fixedly provided with a limit block, the pressing block 5 can synchronously rotate along with the screw rod 2; in the initial rotation position (shown in fig. 1 and 2), the whole of the periphery of the outer edge of the pressing block 5 is located in the extension space surrounded by the outer circle 4 of the screw sleeve, and in the final rotation position (shown in fig. 3 and 4), part of the periphery of the outer edge of the pressing block 5 is away from the extension space surrounded by the outer circle 4 of the screw sleeve. Compact heap 5 is eccentric circle and takes local breach 7, and local breach 7 corresponds stopper 8, the excircle diameter of eccentric circle slightly is less than the telescopic excircle 4 diameter of screw rod, generally have 0.5mm can.
The positive and negative two-way fastening screw can compress an upper connecting piece A and a lower connecting piece B from the upper direction and the lower direction, when in use, the fastening screw is arranged in the mounting holes of the upper and lower connecting pieces from the top down, the external thread 10 of the excircle of the screw sleeve is in threaded connection with the internal thread of the mounting hole of the upper connecting piece A, when the threaded connection is in place, the external hexagon head 9 of the screw sleeve can compress the upper connecting piece A from the upper direction, then the screw 2 is screwed in the direction of withdrawing the screw sleeve 1, the pressing block 5 rotates synchronously with the screw 2, when the pressing block 5 rotates at the maximum angle, the pressing block 5 can touch the limiting block 8, then the pressing block 5 stops rotating, at the moment, the periphery of the outer edge of the pressing block 5 has a partial extension space which is separated from the excircle 4 of the screw sleeve, the screw 2 is continuously screwed, the screw 2 can drive the pressing block 5 to lift through, the lower coupling member B is pressed from below by the pressing block 5. The upper and lower connecting pieces can be compressed from both the positive and negative directions, so that the problem of connection of the upper and lower connecting pieces in special installation occasions mentioned in the background art is solved.
Claims (3)
1. Two-way fastening screw of positive and negative, its characterized in that: the screw rod is connected with an outer hexagon head at the top of the excircle of the screw rod sleeve, eccentricity exists between the inner hole of the screw rod sleeve and the excircle, the screw rod penetrates through the inner hole of the screw rod sleeve from the inner hole of the screw rod sleeve and is in threaded connection with the inner hole of the screw rod sleeve, a pressing block is arranged below the bottom of the screw rod sleeve and is connected to the lower rod end of the screw rod, relative rotation can be carried out between the pressing block and the screw rod, a check ring is arranged below the pressing block and is fixedly connected with the lower rod end of the screw rod, a limiting block is fixed on the bottom end face of the screw rod sleeve, the limiting block circumferentially limits the rotation of the pressing block, and when the pressing block is not in contact with the; the pressing block is at the rotation starting position, the whole periphery of the outer edge of the pressing block is positioned in the extension space surrounded by the excircle of the screw rod sleeve, and the local periphery of the outer edge of the pressing block can leave the extension space surrounded by the excircle of the screw rod sleeve at the rotation finishing position.
2. The reversible binding screw of claim 1, further comprising: and the inner hole of the pressing block is in transition fit with the outer circle of the lower rod end of the screw rod.
3. The reversible binding screw of claim 1, further comprising: the compact heap is eccentric circle and takes local breach, and local breach corresponds the stopper, the excircle diameter of eccentric circle equals or slightly is less than the telescopic excircle diameter of screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921230778.6U CN210565530U (en) | 2019-08-01 | 2019-08-01 | Forward and reverse two-way fastening screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921230778.6U CN210565530U (en) | 2019-08-01 | 2019-08-01 | Forward and reverse two-way fastening screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210565530U true CN210565530U (en) | 2020-05-19 |
Family
ID=70660251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921230778.6U Expired - Fee Related CN210565530U (en) | 2019-08-01 | 2019-08-01 | Forward and reverse two-way fastening screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210565530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345140A (en) * | 2019-08-01 | 2019-10-18 | 瑞安市新华机械标准件厂 | Positive and negative bidirectional fastening screw |
-
2019
- 2019-08-01 CN CN201921230778.6U patent/CN210565530U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345140A (en) * | 2019-08-01 | 2019-10-18 | 瑞安市新华机械标准件厂 | Positive and negative bidirectional fastening screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |