CN202493536U - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN202493536U CN202493536U CN2012201072094U CN201220107209U CN202493536U CN 202493536 U CN202493536 U CN 202493536U CN 2012201072094 U CN2012201072094 U CN 2012201072094U CN 201220107209 U CN201220107209 U CN 201220107209U CN 202493536 U CN202493536 U CN 202493536U
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- Prior art keywords
- tongue piece
- screw
- cylinder
- cut
- drum
- 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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- 230000011218 segmentation Effects 0.000 abstract 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract 1
- 235000011613 Pinus brutia Nutrition 0.000 abstract 1
- 241000018646 Pinus brutia Species 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses an expansion screw, the technical problem that solve are the transverse vibration fixed power that improves expansion screw, reduce the probability that the pine takes off. The utility model discloses an expansion screw, have screw and another screw that has the oblique conical surface and cover at the outside drum of screw including one end, it has first breach to be equipped with on the drum of the screw one side of the oblique conical surface along the drum outer wall radially to open, and first breach is the first tongue piece that both sides are mutually disconnected with one side segmentation of drum, screw thread one end and nut threaded connection, be equipped with on the drum with the other end relative with first tongue piece on radially open along the drum outer wall have the second breach, the second breach is the second tongue piece that both sides are mutually disconnected with the opposite side segmentation of drum, the rigidity of second tongue piece is less than first tongue piece. Compared with the prior art, the upper end of the cylinder is provided with the second tongue piece with rigidity smaller than that of the first tongue piece at the lower end, so that the tongue pieces on two sides are stressed and expanded, the contact area with concrete is increased, and the fixing force during transverse vibration is improved.
Description
Technical field
The utility model relates to a kind of setscrew, especially a kind of setscrew with bilateral tongue piece.
Background technique
At present, the setscrew of being sold on the market with a side tongue piece all is at 1/3rd places of the cylinder bottom of screw tongue piece to be set; The stack shell on cylinder top 2/3rds is smooth surface, because this setscrew can only bear pulling force longitudinally, and the transverse vibration retention force is not enough; When the successional transverse vibration of the on-stream generation of the equipment of being fixed; Will produce looseningly, for a long time the continuous shaking meeting finally gets loose setscrew fully, not only can damage equipment; But also being dropped, equipment injures workman or pedestrian, the injury that brings life and property to people by a crashing object.
Summary of the invention
The purpose of the utility model provides a kind of setscrew, and the technical problem that solve is to improve the transverse vibration retention force of setscrew, reduces the probability that gets loose.
For addressing the above problem; The utility model adopts following technological scheme: a kind of setscrew; Comprise that has the screw cylinder outside with being enclosed within screw that screw thread and other end have tilted conical surface; Said cylinder with screw one side of tilted conical surface is provided with along cylinder outer wall and radially has first cut; Said first cut is both sides disjunct first tongue pieces mutually with a side cutting of cylinder, and said screw thread one end is threaded with nut, and the other end relative with first tongue piece is provided with along cylinder outer wall and radially has second cut on the said cylinder; Said second cut is both sides disjunct second tongue pieces mutually with the opposite side cutting of cylinder, and the rigidity of said second tongue piece is less than first tongue piece.
The quantity of described second tongue piece of the utility model is greater than the quantity of first tongue piece.
The length of described second cut of the utility model is greater than the length of first cut.
The quantity of described second tongue piece of the utility model is greater than the length of the quantity of first tongue piece and second cut length greater than first cut.
Be socketed with short sleeve on the screw between described nut of the utility model and the cylinder.
The side that the rear end of the described short sleeve of the utility model contacts with screw is provided with first inclined-plane.
The inboard of described second tongue piece of the utility model is provided with the gradient second inclined-plane identical with first surface slope.
The inboard, lower end of described first tongue piece of the utility model is provided with the obtuse angle.
Be provided with ring washer between described nut of the utility model and the short sleeve.
Be provided with the annular opening spring washer between described nut of the utility model and the ring washer.
The utility model compared with prior art; Adopt the upper end of cylinder that second tongue piece of rigidity less than lower end first tongue piece is set, and between cylinder and nut, short sleeve is set, make in the nut of screwing; Make the stressed expansion of tongue piece on both sides; Increase and concrete area of contact, the retention force when improving transverse vibration, the equipment that prevents injures workman or pedestrian because of setscrew by a crashing object after getting loose.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation.
Fig. 2 is the utility model embodiment 2 a structural representation.
Fig. 3 is the utility model embodiment 3 a structural representation.
Fig. 4 is the structural representation after the utility model is squeezed into concrete.
Fig. 5 is that the utility model turns nut and makes cylinder deformed configurations schematic representation.
Fig. 6 is the structural representation after the utility model cylinder is badly deformed.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
As shown in Figure 1, the utility model embodiment 1 setscrew is made up of screw 1, nut 6 and cylinder 2, wherein:
One of screw 1 has screw thread, and the other end has tilted conical surface, and cylinder 2 is enclosed within screw 1 outside, and helical thread portion is arranged on the position near screw 1 termination, and tilted conical surface partly is arranged on screw 1 terminal position;
Partly have through first cut 9 on the rear end of said cylinder 2, near tilted conical surface the rear end of cylinder 2 is divided into 4 both sides disjunct first tongue piece 7 mutually; Be provided with obtuse angle 13 in the inside of first tongue piece 7; Obtuse angle 13 partly contacts with tilted conical surface; On the front end of cylinder 2, be provided with through second cut 10 cylinder 2 front ends are divided into 6 both sides disjunct second tongue piece 8 mutually; The equal in length of this first cut 9 and second cut 10 makes the rigidity of cylinder 2 front ends less than cylinder 2 rear ends, on the inboard of second tongue piece 8, is provided with the gradient and is 30 ° second inclined-plane 12;
Said annular opening spring washer 5, ring washer 4 and the short sleeve 3 of between cylinder 2 and nut 6, from left to right being provided with successively; The rear end of this short sleeve 3 is provided with the gradient and second inclined-plane, 12 gradients are similarly 30 ° 11, the first inclined-planes 11, first inclined-plane and the inclined-plane on second inclined-plane 12 is in contact with one another.
As shown in Figure 2, the utility model embodiment 2 setscrew is made up of screw 1, nut 6 and cylinder 2, wherein:
One of screw 1 has screw thread, and the other end has tilted conical surface, and cylinder 2 is enclosed within screw 1 outside, and helical thread portion is arranged on the position near screw 1 termination, and tilted conical surface partly is arranged on screw 1 terminal position;
Partly have through first cut 9 on the rear end of said cylinder 2, near tilted conical surface the rear end of cylinder 2 is divided into 4 both sides disjunct first tongue piece 7 mutually; Be provided with obtuse angle 13 in the inside of first tongue piece 7; Obtuse angle 13 partly contacts with tilted conical surface; On the front end of cylinder 2, be provided with through second cut 10 cylinder 2 front ends are divided into 4 both sides disjunct second tongue piece 8 mutually; The length of this first cut 9 is less than the length of second cut 10, makes the rigidity of cylinder 2 front ends less than cylinder 2 rear ends, on the inboard of second tongue piece 8, is provided with the gradient and is 30 ° second inclined-plane 12;
Said annular opening spring washer 5, ring washer 4 and the short sleeve 3 of between cylinder 2 and nut 6, from left to right being provided with successively; The rear end of this short sleeve 3 is provided with the gradient and second inclined-plane, 12 gradients are similarly 30 ° 11, the first inclined-planes 11, first inclined-plane and the inclined-plane on second inclined-plane 12 is in contact with one another.
As shown in Figure 3, the utility model embodiment 1 setscrew is made up of screw 1, nut 6 and cylinder 2, wherein:
One of screw 1 has screw thread, and the other end has tilted conical surface, and cylinder 2 is enclosed within screw 1 outside, and helical thread portion is arranged on the position near screw 1 termination, and tilted conical surface partly is arranged on screw 1 terminal position;
Partly have through first cut 9 on the rear end of said cylinder 2, near tilted conical surface the rear end of cylinder 2 is divided into 4 both sides disjunct first tongue piece 7 mutually; Be provided with obtuse angle 13 in the inside of first tongue piece 7; Obtuse angle 13 partly contacts with tilted conical surface; On the front end of cylinder 2, be provided with through second cut 10 cylinder 2 front ends are divided into 6 both sides disjunct second tongue piece 8 mutually; The length of this first cut 9 is less than the length of second cut 10, makes the rigidity of cylinder 2 front ends less than cylinder 2 rear ends, on the inboard of second tongue piece 8, is provided with the gradient and is 30 ° second inclined-plane 12;
Said annular opening spring washer 5, ring washer 4 and the short sleeve 3 of between cylinder 2 and nut 6, from left to right being provided with successively; The rear end of this short sleeve 3 is provided with the gradient and second inclined-plane, 12 gradients are similarly 30 ° 11, the first inclined-planes 11, first inclined-plane and the inclined-plane on second inclined-plane 12 is in contact with one another.
When the setscrew with embodiment 1,2 and 3 is inserted through in the hole that percussion drill leaves on concrete structure, shown in Figure 4, this moment cylinder 2, short tube cover 3 and screw 1 segment insertion hole in; Rotating screw cap 6 applies external force to short sleeve 3, and screw 1 rises outside the hole; Annular opening spring washer 5, ring washer 4 keeps motionless, and it is motionless, shown in Figure 5 to make short sleeve 3 also remain on original position; Because the rigidity of cylinder 2 upper ends second tongue piece 8 is less than first tongue piece 7, so first inclined-plane 11 of short sleeve 3 and second inclined-plane 12 mutual friction mutually outwards strut second inclined-plane 12 on second tongue piece 8; When continuing to turn screw, shown in Figure 6, the tilted conical surface part of screw 1 lower end then struts first tongue piece 7 through obtuse angle 13; Such first tongue piece 7 and second tongue piece 8 all spread and play fixation with concrete structure, and nut 6 is backed out, and split out annular opening spring washer 5 and ring washer 4; The equipment that to fix then or object are installed on the screw 1; Again ring washer 4 and annular opening spring washer 5 are loaded onto on the screw 1, at last nut 6 is screwed on, accomplish and install.
The setscrew of the utility model can use on factory, resident's non-static device; Like floor model small sand turbine, the buffing machine that lands; Split-type air conditioner outdoor unit etc.; The equipment that prevents breaks away from the place that originally was fixed in high-speed rotation and vibrative equipment, causes device damage and injures the workman by a crashing object or the pedestrian.
Claims (10)
1. setscrew; Comprise that one has screw thread and other end and has the screw (1) of tilted conical surface and be enclosed within the outside cylinder (2) of screw (1); Said cylinder (2) with screw one side of tilted conical surface is provided with along cylinder (2) outer wall and radially has first cut (9); Said first cut (9) is both sides disjunct first tongue pieces (7) mutually with a side cutting of cylinder (2); Said screw thread one end is threaded with nut (6); It is characterized in that: said cylinder (2) upward is provided with along cylinder (2) outer wall with the relative the other end of first tongue piece (7) and radially has second cut (10), and said second cut (10) is both sides disjunct second tongue pieces (8) mutually with the opposite side cutting of cylinder (2), and the rigidity of said second tongue piece (8) is less than first tongue piece (7).
2. setscrew according to claim 1 is characterized in that: the quantity of said second tongue piece (8) is greater than the quantity of first tongue piece (7).
3. setscrew according to claim 1 is characterized in that: the length of said second cut (10) is greater than the length of first cut (9).
4. setscrew according to claim 1 is characterized in that: the quantity of said second tongue piece (8) is greater than the length of the quantity of first tongue piece (7) and second cut (10) length greater than first cut (9).
5. according to any described setscrew of claim 1 to 4, it is characterized in that: be socketed with short sleeve (3) on the screw (1) between said nut (6) and the cylinder (2).
6. setscrew according to claim 5 is characterized in that: the side that the rear end of said short sleeve (3) contacts with screw (1) is provided with first inclined-plane (11).
7. setscrew according to claim 6 is characterized in that: the inboard of said second tongue piece (8) is provided with the gradient second inclined-plane (12) identical with first inclined-plane (11) gradient.
8. setscrew according to claim 7 is characterized in that: the inboard, lower end of said first tongue piece (7) is provided with obtuse angle (13).
9. setscrew according to claim 8 is characterized in that: be provided with ring washer (4) between said nut (6) and the short sleeve (3).
10. setscrew according to claim 9 is characterized in that: be provided with annular opening spring washer (5) between said nut (6) and the ring washer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201072094U CN202493536U (en) | 2012-03-21 | 2012-03-21 | Expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201072094U CN202493536U (en) | 2012-03-21 | 2012-03-21 | Expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493536U true CN202493536U (en) | 2012-10-17 |
Family
ID=46999768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201072094U Expired - Fee Related CN202493536U (en) | 2012-03-21 | 2012-03-21 | Expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493536U (en) |
-
2012
- 2012-03-21 CN CN2012201072094U patent/CN202493536U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20180321 |