CN207333411U - A kind of pretension screw rod - Google Patents
A kind of pretension screw rod Download PDFInfo
- Publication number
- CN207333411U CN207333411U CN201721421768.1U CN201721421768U CN207333411U CN 207333411 U CN207333411 U CN 207333411U CN 201721421768 U CN201721421768 U CN 201721421768U CN 207333411 U CN207333411 U CN 207333411U
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- CN
- China
- Prior art keywords
- screw rod
- boss
- preload piece
- groove
- pretension
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- 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.)
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Abstract
It the utility model is related to a kind of pretension screw rod.It is main to solve the problems, such as that corotation occur for bolt screw rod and nut when dismounting.Including screw head and screw rod, further include preload piece, spring and rubber block, the screw rod of screw head one end is equipped with boss and groove, spring one end is fixed in groove, and the other end is fixedly connected with rubber block, and rubber block can be compressed in groove completely, preload piece includes the handle that two faces are set on annulus and annulus, the side of screw head is stretched out in one end of handle, has the circular hole that diameter matches with screw rod on annulus, and circular-hole internal-wall is equipped with card slot.The pretension screw rod sets preload piece on screw rod, when dismounting, preload piece can be stabilized with a hand influences rotation efficiency to prevent screw rod and nut generation corotation, in addition it is also provided with the friction of spring and rubber block increase screw rod and mounting hole, stablize strength needed for preload piece with hand to reduce, make dismounting more laborsaving, it is convenient, with the advantages of simple in structure, convenient and practical.
Description
Technical field
It the utility model is related to technical field of fastening, and in particular to a kind of pretension screw rod.
Background technology
Bolt need to be matched somebody with somebody by head and screw rod (carrying externally threaded cylinder) a kind of fastener dimerous with nut
Close, for being fastenedly connected two parts for carrying through hole.This type of attachment claims to be bolted.As nut is revolved from bolt
Under, and can separate the two parts, therefore it is to belong to be detachably connected to be bolted.
In the prior art, the dismounting of bolt uses spanner to dismantle substantially, and disassembly process often can when rotating nut
Screw rod is driven to rotate together, it is screwed under efficiency.In this case, it can generally use and another spanner is clamped screw head just solve
Certainly, this method not only needs two spanners, and right-hand man clamp together it is also very inconvenient.
Utility model content
In order to overcome the shortcomings of background technology, the utility model provides a kind of pretension screw rod, mainly solves bolt and tearing open
The problem of corotation can occur for screw rod and nut when unloading, the pretension screw rod set preload piece on screw rod, when dismounting,
Preload piece can be stabilized with a hand influences rotation efficiency to prevent screw rod and nut generation corotation, is in addition also provided with bullet
Spring and rubber block increase screw rod and mounting hole friction, come reduce with hand stablize preload piece needed for strength, dismounting is more saved
Power, it is convenient, there is the advantages of simple in structure, convenient and practical.
Technical solution is used by the utility model：A kind of pretension screw rod, including screw head and screw rod, further include pretension
Part, spring and rubber block, the screw rod of described screw head one end are equipped with boss and groove, and the spring one end is fixed on groove
Interior, the other end is fixedly connected with rubber block, and the rubber block can be compressed in groove completely, and the preload piece includes annulus
The side of screw head is stretched out in the handle set with two faces on annulus, one end of the handle, have on the annulus diameter with
The circular hole that screw rod matches, the circular-hole internal-wall are equipped with card slot, and the shape size of the card slot is adapted with above-mentioned boss.
Further, the screw rod includes the end of thread and straight-bar end, and the straight-bar end is connected with screw head, and described is recessed
Groove is arranged on straight-bar end.
Further, the setting of the adjacent screw head side wall of the boss, its thickness are less than the thickness of preload piece.
Further, the boss is cylinder or rectangle.
Further, the boss is two, the opposite both sides for being arranged on screw rod, the card slot and boss number
It is identical.
Further, the boss is four, and equidistant array is in the periphery of screw rod, the card slot and boss
Number is identical.
Further, the groove is two, and opposite is arranged on screw rod both sides.
Further, the preload piece surface is equipped with anti-skid chequer.
The beneficial effects of the utility model are：Due to taking above-mentioned technical proposal, which is set in advance on screw rod
Tight part, when dismounting, can stabilize preload piece with a hand influences to rotate to prevent screw rod and nut generation corotation
Efficiency, is in addition also provided with the friction of spring and rubber block increase screw rod and mounting hole, is stablized to reduce with hand needed for preload piece
Strength, make dismounting more laborsaving, it is convenient, there is the advantages of simple in structure, convenient and practical.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the left view of the utility model.
Fig. 3 is the front view of preload piece.
1, screw head in figure；2nd, screw rod；3rd, preload piece；4th, spring；5th, rubber block；6th, boss；7th, groove；8th, annulus；9th,
Hand；10th, circular hole；11st, card slot；12nd, anti-skid chequer.
Embodiment
The utility model embodiment is described further below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of pretension screw rod, including screw head 1 and screw rod 2, further include preload piece 3, spring 4 and rubber
Blob of viscose 5, the screw rod 2 of described 1 one end of screw head are equipped with boss 6 and groove 7, and described 4 one end of spring is fixed in groove 7, separately
One end is fixedly connected with rubber block 5, and the rubber block 5 can be compressed in groove 7 completely, and the preload piece 3 includes annulus 8
With the handle 9 that two faces are set on annulus 8, one end of the handle 9 is stretched out the side of screw head 1, is had on the annulus 8 straight
The circular hole 10 that footpath and screw rod match, 10 inner wall of circular hole are equipped with card slot 11, the shape size of the card slot 11 with it is upper
Boss 6 is stated to be adapted.
When installing and using, the boss 6 that the card slot 11 of preload piece 3 is aligned on screw rod 2 is set in together, then uses spiral shell
Mother's locking.When dismounting, handle 9 is held with a hand, be mutually clamped with screw rod 2 due to preload piece 3 together with, institute
Can stabilize screw rod to stabilize handle, prevent from together driving screw rod 2 when rotating nuts, similarly, installation when
Wait, screw rod 2 can also be stabilized with hand, improve the efficiency of rotation and installation.Another aspect preload piece 3 can also play gasket
Effect.Wherein rubber block 5 and spring 4 can increase the friction between screw rod 2 and inner wall of the hole installing, stablize preload piece with hand to reduce
Required strength, makes to remove and install more laborsaving, convenience,
In the utility model, the screw rod 2 includes the end of thread and straight-bar end, and the straight-bar end is connected with screw head 1,
The groove 7 is arranged on straight-bar end；The setting of adjacent 1 side wall of screw head of the boss 6, its thickness are less than preload piece 3
Thickness, the thickness of boss 6 should not be thicker than the thickness of preload piece, gap occurs to avoid installation.
In the utility model, the boss 6 is cylinder or rectangle；The boss 6 is two, and opposite sets
Put identical in the both sides of screw rod 2,6 numbers of the card slot 11 and boss；The boss 6 is four, and equidistant array exists
The periphery of screw rod 2,6 numbers of the card slot 11 and boss are identical；The groove 7 is two, and opposite is arranged on 2 liang of screw rod
Side；3 surface of preload piece is equipped with anti-skid chequer 12.
The pretension screw rod sets preload piece on screw rod, dismounting when, can be stabilized with a hand preload piece come
Prevent screw rod and nut from corotation occurs and influences rotation efficiency, be in addition also provided with spring and rubber block increase screw rod and mounting hole
Friction, stablize strength needed for preload piece with hand to reduce, make dismounting more laborsaving, it is convenient, have it is simple in structure, it is convenient real
The advantages of using.
Every technical staff's notice：Although the utility model is described according to above-mentioned embodiment, this
The invention thought of utility model is not limited to that utility model, and any repacking with inventive concept, will all include this specially
In sharp scope of patent protection.
Claims (8)
1. a kind of pretension screw rod, including screw head and screw rod, it is characterised in that：Further include preload piece, spring and rubber block, the spiral shell
The screw rod at first end is equipped with boss and groove, and the spring one end is fixed in groove, and the other end is fixed with rubber block to be connected
Connect, the rubber block can be compressed in groove completely, and the preload piece includes what two faces on annulus and annulus were set
The side of screw head is stretched out in handle, one end of the handle, has the circular hole that diameter matches with screw rod on the annulus, described
Circular-hole internal-wall is equipped with card slot, and the shape size of the card slot is adapted with above-mentioned boss.
A kind of 2. pretension screw rod according to claim 1, it is characterised in that：The screw rod includes the end of thread and straight-bar
End, the straight-bar end are connected with screw head, and the groove is arranged on straight-bar end.
A kind of 3. pretension screw rod according to claim 1, it is characterised in that：The adjacent screw head side wall of the boss is set
Put, its thickness is less than the thickness of preload piece.
A kind of 4. pretension screw rod according to claim 1 or 3, it is characterised in that：The boss is cylindrical or rectangular
Shape.
A kind of 5. pretension screw rod according to claim 4, it is characterised in that：The boss is two, opposite setting
In the both sides of screw rod, the card slot is identical with boss number.
A kind of 6. pretension screw rod according to claim 4, it is characterised in that：The boss is four, equidistant battle array
The periphery of screw rod is listed in, the card slot is identical with boss number.
A kind of 7. pretension screw rod according to claim 4, it is characterised in that：The groove is two, opposite setting
In screw rod both sides.
A kind of 8. pretension screw rod according to claim 5 or 6 or 7, it is characterised in that：The preload piece surface is equipped with anti-
Sliding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421768.1U CN207333411U (en) | 2017-10-29 | 2017-10-29 | A kind of pretension screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421768.1U CN207333411U (en) | 2017-10-29 | 2017-10-29 | A kind of pretension screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333411U true CN207333411U (en) | 2018-05-08 |
Family
ID=62364329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721421768.1U Active CN207333411U (en) | 2017-10-29 | 2017-10-29 | A kind of pretension screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333411U (en) |
-
2017
- 2017-10-29 CN CN201721421768.1U patent/CN207333411U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |