CN206770363U - A kind of built-in screw - Google Patents
A kind of built-in screw Download PDFInfo
- Publication number
- CN206770363U CN206770363U CN201720300493.XU CN201720300493U CN206770363U CN 206770363 U CN206770363 U CN 206770363U CN 201720300493 U CN201720300493 U CN 201720300493U CN 206770363 U CN206770363 U CN 206770363U
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- Prior art keywords
- screw
- built
- follow block
- upper plate
- cavity
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Abstract
The utility model discloses a kind of built-in screw, solve the screw in the screw hole with counterbore, space is left between screw and counterbore madial wall, then screw can produce loosening because of vibration, the problem of so as to cause tightness to reduce.Its drip irrigation device is a kind of built-in screw, including the screw body with nut section and bolt section, the nut section includes upper plate, fixed lower plate and the peripheral side plate being mainly spliced to form by multiple follow blocks with bolt section, the ring baffle with bolt section coaxial line is installed between the upper plate and lower plate, and the first cavity is formed between the ring baffle and peripheral side plate, the spring for promoting follow block to expand outwardly in the first cavity is provided between the ring baffle and each follow block, the side wall that the side wall of nut section is expanded to and is close to counterbore is reached, so as to reduce the vibration of screw body, prevent screw body from loosening, ensure screw body installation after tightness purpose.
Description
Technical field
Fastener areas is the utility model is related to, in particular, is related to a kind of built-in screw.
Background technology
Screw is the physics and mathematical principle of the inclined-plane circular rotating and frictional force using object, is fastened by easy stages
The instrument of implements parts.Screw is the general saying of fastener, daily pet phrase.Screw is work indispensable in daily life
Industry necessity：The minimum screw that such as camera, glasses, clock and watch, electronics use；TV, electric product, musical instrument, furniture etc.
General screw；As for engineering, building, bridge then using large-scale screw, nut；Traffic tool, aircraft, electric car, automobile etc. are then
It is used in combination for big primary screw.Screw industrially bears vital task, as long as there is industry on the earth, then the function of screw is eternal
It is important.Screw is the joint invention in people's production and living over the past thousands of years, and from the point of view of application field, it is the first big of the mankind
Invention.
Usual screw includes bolt section and nut section, and bolt section is provided with external screw thread, nut section upper surface open up " ten " word,
Screw is arranged at screw hole place by the flights such as " one " word for embedded screwdriver rotary screw.
As shown in Figure 1, screw hole 1 generally comprises the internal thread hole 12 disposed for bolt section 22 and pacified for nut section 21
The counterbore 11 put.
, can be by the enlarged-diameter of counterbore, so as to avoid counterbore inwall typically in order to which screw is installed in screw 1 more smoothly
Friction is produced to nut section, but when screw is used in some meeting vibratory equipments, screw can produce loosening because of vibration, so as to make
The problem of being reduced into tightness.
Utility model content
The purpose of this utility model is to provide a kind of built-in screw, and the side wall of nut section is expanded to the side for being close to counterbore
Wall, so as to reduce the vibration of screw body, prevent screw body from loosening, it is ensured that the tightness after the installation of screw body.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of built-in screw, bag
The screw body with nut section and bolt section is included, the nut section is including upper plate and the fixed lower plate of bolt section and mainly
The peripheral side plate being spliced to form by multiple follow blocks, it is installed between the upper plate and lower plate and is kept off with the annular of bolt section coaxial line
Plate, and the first cavity is formed between the ring baffle and peripheral side plate, it is provided between the ring baffle and each follow block
The spring for promoting follow block to expand outwardly in first cavity.
By using above-mentioned technical proposal, the nut section of screw body is divided into upper plate, lower plate and peripheral side plate, lower plate
It is fixed with bolt section, ring baffle is installed between upper plate and lower plate, two-fold upper plate is fixed with bolt section with lower plate, so as to really
Protect upper plate and lower plate rotates in a circumferential direction with bolt section is concentric, in order to turn screw body, peripheral side plate is spliced by multiple follow blocks
Form, there is the first cavity, and spring is provided between ring baffle and each follow block between ring baffle and peripheral side plate so that
Each follow block under the action of the spring, expands outwardly, until follow block contradicts the side wall of counterbore, reduces the vibration of screw body, from
And prevent that screw body from loosening after installing because of vibration, it is ensured that the tightness after the installation of screw body.
It is of the present utility model to be further disposed in being installed between the upper plate and lower plate in the ring baffle and spiral shell
The connected central shaft of bolt section, the second cavity is formed between the ring baffle and central shaft；The upper plate and lower plate, which correspond to, to be opened
Provided with communicated with the second cavity and with the helicla flute of central shaft concentric, be provided with a pull bar slided in two helicla flutes,
A drawstring is each provided between the follow block and pull bar, the ring baffle offers multiple through holes worn for drawstring.
By using above-mentioned technical proposal, helicla flute is set, pull bar is installed in helicla flute, each follow block and pull bar it
Between be provided with drawstring, ring baffle opens up through hole so that when pull bar is slided in helicla flute, pass through drawstring pull expansion after supporting
Plate withdraws original state, consequently facilitating dismantling screw body after shrinking.
It is of the present utility model to be further disposed in the two side of the helicla flute is correspondingly provided with multiple limitation pull bars and slided
Bar shaped fin.
By using above-mentioned technical proposal, bar shaped fin is set, slided so as to limit pull bar, pole particularly after shrinking
At extreme position, the preliminary clamping pull bar of strip groove, prevent follow block from expanding under the action of the spring, so as to be difficult to fixed dismounting screw
Body.
It is of the present utility model to be further disposed in, the cross section semicircular in shape of the bar shaped fin, and all bars
The diameter of shape fin gradually increases along helicla flute track to central axis direction.
By using above-mentioned technical proposal, bar shaped ridge in cross-section semicircular in shape so that the lateral wall track of pull bar and bar
The side wall track of shape fin, with certain comparative resistance, so as to limit pull bar, but increases thrust still slidably when sliding
Pull bar, the diameter change of bar shaped fin so that the extreme position after follow block contraction, it is maximum to the resistance of pull bar, so as to anti-
Only pull bar reverse slide.
It is of the present utility model to be further disposed in all drawstrings are arranged at the lower section of spring, and each described
The drawstring of follow block is located at parallel with the spring of top at the first cavity.
By using above-mentioned technical proposal, all drawstrings are located at below spring, at the lower both ends of follow block by follow block and upper plate
Fix, avoid because spring resistance has space between follow block retraction posterior end and lower plate, the drawstring of each follow block is located at lower plate
Spring at first cavity with top is parallel, it is ensured that follow block radial contraction, prevent because of the winding direction of drawstring and with annular
Circumferential offset occurs between baffle plate, so that both ends of the spring dislocation influences follow-up use.
It is of the present utility model to be further disposed in the edge of the upper plate offers multiple necks, and each described
Follow block is hinged with the fixture block for being caught in and being fixed in neck with upper plate.
By using above-mentioned technical proposal, it is caught in by fixture block rotation in neck, coordinates drawstring in the spring both sides of follow block,
Limitation follow block extends out, so as to fix upper plate and each follow block,
It is of the present utility model to be further disposed between all follow blocks and upper plate, lower plate and adjacent follow block
It is equipped with the stretch fabric for wrapping up the first cavity.
By using above-mentioned technical proposal, stretch fabric is set, there is certain elasticity, can be expanded with follow block and be shunk and deform,
So as to wrap up the first cavity, avoid after follow block is expanded, the first cavity opens wide so that impurity influences screw after entering the first cavity
Body subsequently uses.
It is of the present utility model to be further disposed in the center of the upper plate offers one-level screw to central axis direction
Groove, the bottom of the one-level flight accordingly offer two level flight.
By using above-mentioned technical proposal, one-level flight and two level flight are set, are respectively used to various sizes of spiral shell
Silk knife insertion rotary screw body, realizes facility.
It is of the present utility model to be further disposed in being equipped with anti-slip veins on the outside of each follow block.
By using above-mentioned technical proposal, anti-slip veins are set, increase the friction between follow block and counterbore inwall, so as to reduce
The vibration of screw body.
In summary, the utility model has the advantages that：Ring baffle, central shaft and drawing are provided with nut section
Bar, nut section is divided into the first cavity and the second cavity, and the peripheral side plate of nut section is made up of multiple follow blocks, in the first cavity
It is interior that spring is provided between follow block and ring baffle, it is provided with and draws between follow block and pull bar in the first cavity and the second cavity
Rope, and pull bar drives drawstring to be rotated around central shaft along the helicla flute track in nut section, follow block on the upper plate of nut section with distinguishing
Provided with fixture block and neck so that when screw body is installed in screw hole, follow block is expanded outwardly until follow block because of the effect of spring
Counterbore side wall is contradicted, realizes the effect of screw body damping, avoids screw body from loosening, ensures tightness, and can passes through pull bar
Follow block is pulled to retract, fixture block is caught in neck consequently facilitating dismounting screw body.
Brief description of the drawings
Fig. 1 is prior art screw mounting means；
Schematic diagram when Fig. 2 is not used for the utility model；
Longitudinal sectional view when Fig. 3 is not used for the utility model；
Transverse sectional view when Fig. 4 is not used for the utility model；
Fig. 5 is schematic diagram when the utility model uses.
In figure, 1, screw body；11st, the first cavity；12nd, the second cavity；13rd, one-level flight；14th, two level flight；
2nd, bolt section；21st, external screw thread；3rd, nut section；31st, upper plate；311st, neck；32nd, lower plate；33rd, peripheral side plate；331st, follow block；
332nd, fixture block；333rd, anti-slip veins；34th, ring baffle；341st, through hole；35th, central shaft；36th, helicla flute；361st, bar shaped fin；4、
Spring；5th, pull bar；51st, drawstring；6th, stretch fabric.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figures 2 and 3, a kind of built-in screw, including screw body 1, screw body 1 include being arranged on internal thread hole
（Do not illustrated in figure）Interior bolt section 2 and it is placed in counterbore（Do not illustrated in figure）Interior nut section 3.The table of bolt section 2
Face is provided with external screw thread 21.Nut section 3 includes upper plate 31, lower plate 32 and peripheral side plate 33, and upper plate 31 is located at the upper table of nut section 3
Face, and the edge of upper plate 31 offers multiple necks 311, specifically there is five necks 311 in the present embodiment.Lower plate 32 is located at spiral shell
The lower surface of cap section 3, and lower plate 32 and bolt section 2 are fixed.Peripheral side plate 33 is spliced to form by multiple follow blocks 331, the present embodiment
In, peripheral side plate 33 is spliced to form by five identical follow blocks 331, and the upper surface of each follow block 331 is hinged with a fixture block
332, the neck 311 of each fixture block 332 and upper plate 31 is corresponded, and the rotation of fixture block 332 is caught in neck 311, on fixed
Plate 31 and each follow block 331, and the outside of each follow block 331 is equipped with anti-slip veins 333.
With reference to shown in Fig. 4, a ring baffle 34 is installed between the upper plate 31 and lower plate 32 of nut section 3 and positioned at ring
Central shaft 35 in shape baffle plate 34, ring baffle 34 are coaxially set with bolt section 2, and central shaft 35 is connected with bolt section 2, it is ensured that
The upper plate 31 and lower plate 32 of nut section 3 rotate in a circumferential direction with the coaxial line of bolt section 2.Shape between ring baffle 34 and peripheral side plate 33
Into the first cavity 11, the second cavity 12 is formed between ring baffle 34 and central shaft 35.
It is horizontally installed with a spring 4 between ring baffle 34 and each upper end of follow block 331, and each spring 4 is positioned at supporting
In the connection of the center to center axle 35 of plate 331, shown in reference picture 5 so that spring 4 can in the first cavity 11 radial push follow block
331 expand outwardly, and so as to increase the volume of nut section 3 by increasing the volume of the first cavity 11, each follow block 331 is with sinking
The inwall in hole is affixed, and in the presence of anti-slip veins 333 and spring 4, the vibration of screw body 1 is reduced, so as to prevent screw sheet
The loosening of body 1.
With reference to shown in Fig. 3 and Fig. 4, the upper plate 31 and lower plate 32 of nut section 3 correspond to up and down offers a helicla flute 36,
Helicla flute 36 and the concentric of central shaft 35, and helicla flute 36 communicates with the second cavity 12.One is installed with helicla flute 36
Individual pull bar 5, one end of pull bar 5 wear out the upper surface of upper plate 31, and the other end is placed in the helicla flute 36 of lower plate 32 so that pull bar
5 slide along the track of helicla flute 36.The two side of helicla flute 36 is correspondingly provided with multiple bar shaped fins 361, and bar shaped fin 361 is axially
Set, approach bar shaped fin 361 when making the pull bar 5 be slided in helicla flute 36 and by limit slippage, meanwhile, bar shaped fin 361
The equal semicircular in shape in cross section, and track of the diameter of all bar shaped fins 361 along helicla flute 36 gradually increases to the direction of central shaft 35
Greatly, then it is bigger that the resistance being subject to is slided closer to the pull bar 5 of central shaft 35.
The lower end of ring baffle 34 and the corresponding section of each follow block 331 offer a through hole 341, each follow block
331 are installed with the drawstring 51 for wearing corresponding through hole 341 and pull bar 5 binding, and all drawstrings 51 contract around central shaft 35 along helicla flute 36
Small direction is bundled on drawstring 51, referring in particular to shown in Fig. 4, the present embodiment medium pulling rope 51 clockwise, when pull bar 5 is along spiral shell
When spin slot 36 turns clockwise, drawstring 51 is driven to pull various follow blocks 331 to be drawn close to the direction of ring baffle 34, until follow block
331 contact upper plates 31 and lower plate 32.All drawstrings 51 are located at the lower section of spring 4, coordinate the fixation of fixture block 332 and neck 311, to
The upper and lower ends of plate 331 fix follow block 331 and upper plate 31 and lower plate 32, avoid the retraction posterior end of follow block 331 and lower plate 32 it
Between there is space, so as to reduce the volume of nut section 3.The drawstring 51 of each follow block 331 be located at the first cavity 11 with top
Spring 4 it is parallel, it is ensured that the radial contraction of follow block 331, prevent from sending out between ring baffle 34 because of the winding direction of drawstring 51
Raw circumferential offset, so that the dislocation of the both ends of spring 4 influences follow-up use.
It is solid between all follow blocks 331 and upper plate 31, lower plate 32 and adjacent follow block 331 with reference to shown in Fig. 4 and Fig. 5
Provided with stretch fabric 6, there is certain elasticity, can be expanded with follow block 331 and shrink and deform, so as to wrap up the first cavity 11, avoid working as
After follow block 331 is expanded, the first cavity 11 opens wide so that influence screw body 1 subsequently uses after impurity enters the first cavity 11.
Shown in reference picture 3 and Fig. 4, the center of upper plate 31 offers one-level flight 13, and one-level flight 13 is to center
The direction of axle 35 is axially arranged, and the bottom of one-level flight 13 accordingly offers two level flight 14, and the chi of two level flight 14
The very little size less than one-level flight 13, it is respectively used to various sizes of screwdriver（Do not illustrated in figure）Insert rotary screw sheet
Body 1.
During using the utility model, screw body 1 is pacified using one-level flight 13 or two level flight 14 through screwdriver
Load screw hole（Do not illustrated in figure）, now the nut section 3 of screw body 1 be placed in counterbore, on Unscrew follow block 331
Fixture block 332, by pull bar 5 along the track of helicla flute 36 to 3 outer Slideslip of nut section in the presence of spring 4, until each follow block 331
The inwall of counterbore is contradicted, now by the anti-slip veins 333 and spring 4 on follow block 331, reduces the vibration of screw body 1, so as to anti-
The only loosening of screw body 1；When dismantling screw body 1, pull bar 5 is pulled along the track of helicla flute 36 to the central slide of nut section 3, directly
Upper plate 31 and lower plate 32 are contradicted to follow block 331, now rotating card block 332 is caught in the neck 311 of upper plate 31, so as to shrink back spiral shell
Cap section 3, then screw body 1 is back-outed by screwdriver.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in right of the present utility model by Patent Law.
Claims (9)
1. a kind of built-in screw, including the screw body (1) with nut section (3) and bolt section (2), it is characterised in that：It is described
Nut section (3) includes upper plate (31), splices structure with the fixed lower plate (32) of bolt section (2) and mainly by multiple follow blocks (331)
Into peripheral side plate (33), the ring baffle with bolt section (2) coaxial line is installed between the upper plate (31) and lower plate (32)
(34), and between the ring baffle (34) and peripheral side plate (33) form the first cavity (11), the ring baffle (34) with
The spring (4) for promoting follow block (331) to expand outwardly in the first cavity (11) is provided between each follow block (331).
A kind of 2. built-in screw according to claim 1, it is characterised in that：The upper plate (31) and the meta of lower plate (32)
The central shaft (35) being connected with bolt section (2), the ring baffle (34) and central shaft are installed with the ring baffle (34)
(35) the second cavity (12) is formed between；The upper plate (31) and lower plate (32) corresponding offer communicate with the second cavity (12)
And with the helicla flute (36) of central shaft (35) concentric, be provided with a pull bar (5) slided in two helicla flutes (36), each
A drawstring (51) is provided between the follow block (331) and pull bar (5), the ring baffle (34) offers multiple for drawstring (51)
The through hole (341) worn.
A kind of 3. built-in screw according to claim 2, it is characterised in that：The two side of the helicla flute (36) is correspondingly set
There is the bar shaped fin (361) that multiple limitation pull bars (5) are slided.
A kind of 4. built-in screw according to claim 3, it is characterised in that：The cross section of the bar shaped fin (361) is in
Semicircle, and the diameter of all bar shaped fins (361) gradually increases along helicla flute (36) track to central shaft (35) direction.
A kind of 5. built-in screw according to claim 4, it is characterised in that：All drawstrings (51) are arranged at spring
(4) lower section, and the drawstring (51) of each follow block (331) is located at spring (4) phase of the first cavity (11) place with top
It is parallel.
A kind of 6. built-in screw according to claim 5, it is characterised in that：The edge of the upper plate (31) offers more
Individual neck (311), and each follow block (331) is hinged with and is caught in fixture block fixed with upper plate (31) in neck (311)
(332)。
A kind of 7. built-in screw according to claim 6, it is characterised in that：All follow blocks (331) and upper plate (31),
The stretch fabric (6) for wrapping up the first cavity (11) is equipped between lower plate (32) and adjacent follow block (331).
A kind of 8. built-in screw according to claim 7, it is characterised in that：The center of the upper plate (31) is to central shaft
(35) direction offers one-level flight (13), and the bottom of the one-level flight (13) accordingly offers two level flight
(14)。
A kind of 9. built-in screw according to claim 8, it is characterised in that：It is all provided with the outside of each follow block (331)
There are anti-slip veins (333).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720300493.XU CN206770363U (en) | 2017-03-24 | 2017-03-24 | A kind of built-in screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720300493.XU CN206770363U (en) | 2017-03-24 | 2017-03-24 | A kind of built-in screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206770363U true CN206770363U (en) | 2017-12-19 |
Family
ID=60633730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720300493.XU Expired - Fee Related CN206770363U (en) | 2017-03-24 | 2017-03-24 | A kind of built-in screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206770363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439903A (en) * | 2019-09-02 | 2019-11-12 | 浙江荣亿精密机械股份有限公司 | A kind of expansion chuck tuning Self-locking screw |
-
2017
- 2017-03-24 CN CN201720300493.XU patent/CN206770363U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439903A (en) * | 2019-09-02 | 2019-11-12 | 浙江荣亿精密机械股份有限公司 | A kind of expansion chuck tuning Self-locking screw |
| CN110439903B (en) * | 2019-09-02 | 2021-07-02 | 浙江荣亿精密机械股份有限公司 | Expansion type tuning self-locking 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: 20171219 Termination date: 20180324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |