CN216519061U - One-way bolt - Google Patents
One-way bolt Download PDFInfo
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- CN216519061U CN216519061U CN202123040443.8U CN202123040443U CN216519061U CN 216519061 U CN216519061 U CN 216519061U CN 202123040443 U CN202123040443 U CN 202123040443U CN 216519061 U CN216519061 U CN 216519061U
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- dovetail
- nut
- conical head
- screw rod
- sleeve
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Abstract
The utility model relates to the technical field of one-way bolts, and provides a one-way bolt which comprises a screw rod and a conical head screw sleeve sleeved on the screw rod, wherein the conical head screw sleeve is provided with a dovetail key; the front end of the dovetail cone head screw sleeve is provided with a dovetail groove for clamping the cone head dovetail key; when the device is installed, the convex semicircular key of the straight section of the conical head thread sleeve is locked in the steel plate pin hole, the conical head thread sleeve and the dovetail nut cannot rotate, and the tightening effect can be achieved as long as the screw is screwed in one direction outside; the dovetail of the dovetail nut can expand and can be tightened more and more in the screwing process, and the connection strength of the one-way bolt is reliable and stable; the one-way bolt is divided into a high-strength bolt and a non-high-strength bolt; the utility model fills the blank of the prior art, has reasonable design, compact structure, high connecting strength of the one-way bolt, good connecting effect, wide application range and strong practicability.
Description
Technical Field
The utility model relates to the technical field of bolts, in particular to a one-way bolt.
Background
The one-way bolt, also known as a blind eye bolt or a single-side locking bolt, can realize the function of unilateral installation and unilateral tightening, and the one-way bolt is divided into a high-strength bolt and a non-high-strength bolt, and is suitable for the connection of a steel structure.
Traditional one-way bolt can require steel sheet hole diameter ratio screw rod diameter to be a little bigger than when connecting the steel construction usually to lead to the screw rod can appear conical head swivel nut, nut and rotate along with the screw rod rotation at the in-process of screwing up, also be exactly the problem of following the commentaries on classics, lead to the steel construction installation unstable, connection rigidity is lower.
To this end, we propose a one-way bolt.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a one-way bolt, which overcomes the defects of the prior art, and solves the problems that the diameter of a steel plate hole is usually required to be slightly larger than the diameter of a screw rod when the conventional one-way bolt is connected with a steel structure, so that a cone head screw sleeve and a screw cap rotate along with the rotation of the screw rod in the screwing process of the screw rod, namely the commonly-known follow-up rotation, the steel structure is not stably installed, and the connection rigidity is lower; according to the utility model, the positioning key groove for fixing the conical head screw sleeve in the workpiece hole is formed in the front end of the conical head screw sleeve, and the positioning key groove is clamped by a pin key during the installation of a one-way bolt, so that the conical head screw sleeve is locked with a steel structure, and the conical head screw sleeve is prevented from following rotation along with the rotation of a screw rod in a steel plate hole; the dovetail key is arranged at the conical end of the conical head screw sleeve, the limiting open slot is formed in the dovetail end of the screw cap, and the limiting open slot is clamped by the dovetail key so as to limit and lock the conical head screw sleeve and the screw cap, so that the screw cap is prevented from rotating with the screw in a steel plate hole, the mounting stability of a steel structure is improved, and the connection rigidity is enhanced; the taper head thread sleeve and the dovetail nut are connected in a matched mode through the dovetail key and the dovetail limiting open slot, the dovetail limiting open slot and the dovetail key expand along with rotation of the screw, the taper head thread sleeve, the dovetail nut and the steel plate hole are matched and tightened more and more in the screwing process of the screw, and the connection strength and the connection reliability of the one-way bolt are further improved; the utility model has reasonable design and compact structure, the conical head screw sleeve and the dovetail nut are clamped with each other and are connected and fixed with a steel structural part when in use, the conical head screw sleeve and the dovetail nut cannot rotate along with each other when the screw is screwed, and the screwing effect can be achieved as long as the hexagonal screw head is screwed outside; dovetail nut's forked tail will expand and will tighten more and more at the in-process of twisting moving, and one-way bolt's joint strength is high, and the excellent in connection effect, the practicality is high.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the one-way bolt comprises a screw rod, a conical head threaded sleeve and a dovetail nut, wherein the conical head threaded sleeve and the dovetail nut are sleeved on the screw rod, and the dovetail nut is close to the tail end of the screw rod;
a semicircular key used for fixing the conical head thread insert in a steel plate hole is integrally formed at the front end of the conical head thread insert; the tail end of the conical head screw sleeve is arranged to be a conical end, and a plurality of dovetail keys are annularly arranged on the conical end;
the front end of the dovetail nut is provided with an expandable dovetail end, the dovetail end is provided with limiting open slots which are the same in quantity as the dovetail keys and correspond to the clamping dovetail keys, and the taper head thread sleeves and the dovetail nut are limited and fixed through the dovetail key clamping limiting key slots.
Preferably, a hexagonal nut is arranged at the front end of the screw rod.
Preferably, the front end of the screw is sleeved with a steel washer for protecting the surface of the steel structure from being scratched by the nut.
Preferably, the number of the dovetail keys is at least 4, and a plurality of the dovetail keys are arranged on the conical end of the conical head thread sleeve in an equidistant mode.
Preferably, the number of the limit open slots is at least 4, and the limit open slots are arranged at the dovetail end of the dovetail nut in an equidistance manner.
(III) advantageous effects
The embodiment of the utility model provides a one-way bolt. The method has the following beneficial effects:
1. according to the utility model, the positioning key groove for fixing the conical head screw sleeve in the workpiece hole is formed in the front end of the conical head screw sleeve, the positioning key groove is clamped by using a pin key during screw installation, the conical head screw sleeve is fixed with a steel structure, and the conical head screw sleeve is prevented from following rotation along with the rotation of the screw in the steel plate hole;
2. the dovetail key is arranged at the conical end of the conical head screw sleeve, the dovetail end of the dovetail nut is provided with the limiting open slot, and the conical head screw sleeve and the dovetail nut are limited and fixed by clamping the limiting open slot through the dovetail key, so that the dovetail nut is prevented from rotating with the rotation of the screw rod in the steel plate hole, and the mounting stability of a steel structure is improved and the connection rigidity is enhanced;
3. the taper head thread sleeve and the dovetail nut are connected in a matched mode through the dovetail key and the dovetail limiting open slot, the dovetail limiting open slot and the dovetail key expand along with rotation of the screw, the taper head thread sleeve, the dovetail nut and the steel plate hole are matched and tightened more and more in the screwing process of the screw, and the connection strength and the connection reliability of the one-way bolt are further improved;
4. the utility model has reasonable design and compact structure, the conical head screw sleeve and the dovetail nut are clamped with each other and are connected and fixed with the steel structural part when in use, the conical head screw sleeve and the dovetail nut cannot rotate along with each other when the screw rod is screwed, and the screwing effect can be achieved as long as the hexagonal nut is screwed outside; dovetail nut's forked tail will expand and will tighten more and more at the in-process of twisting moving, and one-way bolt's joint strength is high, and the excellent in connection effect, the practicality is high.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded perspective view of the present invention;
FIG. 3 is a left side view, a front view and a right side view of the dovetail nut of the present invention from left to right;
FIG. 4 is a front view of the dovetail nut after expansion;
FIG. 5 is a front view of embodiment 1 of the present invention;
FIG. 6 is a left side view, a front view and a right side view of the cone head thread insert of FIG. 5 from left to right;
FIG. 7 is a front view of embodiment 2 of the present invention
FIG. 8 is a left side view, a front view and a right side view of the cone head thread insert of FIG. 7 from left to right;
FIG. 9 is a front view of embodiment 3 of the present invention;
FIG. 10 is a left side view, a front view and a right side view of the cone head thread insert of FIG. 9 from left to right;
FIG. 11 is a front view of embodiment 4 of the present invention;
FIG. 12 is a left side view, a front view and a right side view of the cone head thread insert of FIG. 11 from left to right;
in the figure: a screw 1; a conical head thread sleeve 2; 2.1 of a semicircular bond; a positioning key slot 2.2; dovetail key 2.3; 2.4 of a pin; a dovetail nut 3; a limiting open slot 3.1; a hexagonal nut 4; a steel washer 5; a steel structure X.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-12, the one-way bolt comprises a screw rod 1, a conical head thread sleeve 2 and a dovetail nut 3, wherein the conical head thread sleeve and the dovetail nut 3 are sleeved on the screw rod 1, and the dovetail nut 3 is close to the tail end of the screw rod 1;
example 1: a semicircular key 2.1 for fixing the conical head threaded sleeve 2 in a steel plate hole is integrally formed at the front end of the conical head threaded sleeve 2, the conical head threaded sleeve 2 is fixedly clamped with a steel structure X, and the conical head threaded sleeve 2 is prevented from rotating with the rotation of the screw rod 1 in the steel plate hole;
the tail end of the conical head thread sleeve 2 is provided with a conical end which is convenient to expand in cooperation with the dovetail nut 3, and a plurality of dovetail keys 2.3 are annularly arranged on the conical end;
the front end of forked tail nut 3 is provided with the expandable dovetail end, and the forked tail is served and is offered the spacing open slot 3.1 with the same quantity of dovetail key 2.3 and correspond joint dovetail key 2.3, thereby it is spacing fixed with conical head swivel nut 2 and forked tail nut 3 through the spacing open slot 3.1 of dovetail key 2.3 joint, avoid forked tail nut 3 to follow the commentaries on classics along with screw rod 1 at the downthehole rotation of steel sheet to improve the steadiness and the reinforcing rigidity of connecting of steel construction X installation.
Example 2: a semicircular key 2.1 for fixing the conical head threaded sleeve 2 in a steel plate hole is integrally formed at the front end of the conical head threaded sleeve 2, the conical head threaded sleeve 2 is fixedly clamped with a steel structure X, and the conical head threaded sleeve 2 is prevented from rotating with the rotation of the screw rod 1 in the steel plate hole;
the end of conical head swivel nut 2 sets up to the toper end, the cooperation forked tail nut 3 inflation of being convenient for, the toper is served and can also be encircled a plurality of pins 2.4 of radially wearing to establish, forked tail nut 3's front end is provided with expandable swallow tail end, the forked tail is served and is offered and just corresponds spacing open slot 3.1 of joint pin 2.4 with the same quantity of pin 2.4, thereby it is spacing fixed with conical head swivel nut 2 and forked tail nut 3 with the spacing open slot 3.1 of pin 2.4 joint, avoid forked tail nut 3 to follow up the commentaries on classics at the downthehole rotation of steel sheet along with screw rod 1, thereby improve the steadiness and the reinforcing joint rigidity of steel construction X installation.
Example 3: the front end of the conical head thread insert 2 can be further provided with a positioning key groove 2.2 which is inserted by using a pin key and used for fixing the conical head thread insert 2 in a steel plate hole, the positioning key groove 2.2 is clamped by using the pin key when the screw rod 1 is installed, the conical head thread insert 2 is fixed with a steel structure X, and the conical head thread insert 2 is prevented from rotating along with the rotation of the screw rod 1 in the steel plate hole;
the tail end of the conical head thread sleeve 2 is provided with a conical end which is convenient to expand in cooperation with the dovetail nut 3, and a plurality of dovetail keys 2.3 are annularly arranged on the conical end;
the front end of forked tail nut 3 is provided with the expandable dovetail end, and the forked tail is served and is offered the spacing open slot 3.1 with the same quantity of dovetail key 2.3 and correspond joint dovetail key 2.3, thereby it is spacing fixed with conical head swivel nut 2 and forked tail nut 3 through the spacing open slot 3.1 of dovetail key 2.3 joint, avoid forked tail nut 3 to follow the commentaries on classics along with screw rod 1 at the downthehole rotation of steel sheet to improve the steadiness and the reinforcing rigidity of connecting of steel construction X installation.
Example 4: the front end of the conical head thread insert 2 can be further provided with a positioning key groove 2.2 which is inserted by using a pin key and used for fixing the conical head thread insert 2 in a steel plate hole, the positioning key groove 2.2 is clamped by using the pin key when the screw rod 1 is installed, the conical head thread insert 2 is fixed with a steel structure X, and the conical head thread insert 2 is prevented from rotating along with the rotation of the screw rod 1 in the steel plate hole;
the end of conical head swivel nut 2 sets up to the toper end, the cooperation forked tail nut 3 inflation of being convenient for, the toper is served and can also be encircled a plurality of pins 2.4 of radially wearing to establish, forked tail nut 3's front end is provided with expandable swallow tail end, the forked tail is served and is offered and just corresponds spacing open slot 3.1 of joint pin 2.4 with the same quantity of pin 2.4, thereby it is spacing fixed with conical head swivel nut 2 and forked tail nut 3 with the spacing open slot 3.1 of pin 2.4 joint, avoid forked tail nut 3 to follow up the commentaries on classics at the downthehole rotation of steel sheet along with screw rod 1, thereby improve the steadiness and the reinforcing joint rigidity of steel construction X installation.
Conical head swivel nut 2 is connected through pin 2.4 and the cooperation of the spacing open slot 3.1 of forked tail with forked tail nut 3, and the spacing open slot 3.1 of forked tail and pin 2.4 expand the locking along with the rotation of screw rod 1, and at 1 in-process conical head swivel nut of twisting the screw rod 2, forked tail nut 3 and the cooperation of steel sheet hole more and more tight, further strengthen the reliability of one-way bolt joint strength and connection.
The utility model has reasonable design and compact structure, the conical head thread sleeve 2 and the dovetail nut 3 are mutually clamped by key grooves and are fixedly connected with the steel structural member X when in use, the conical head thread sleeve 2 and the dovetail nut 3 can not follow the rotation when the screw rod 1 is screwed, and the screwing effect can be achieved as long as the hexagonal nut 4 is screwed outside; dovetail nut 3's forked tail will expand, can be more and more tight at the in-process of twisting moving, and one-way bolt's joint strength is high, and the excellent in connection effect, the practicality is high.
In this embodiment, the front end of the screw rod 1 is provided with the hexagon nut 4, and the hexagon nut 4 has six contact surfaces, so that the screw rod is fully stressed and is not easy to slip when being screwed, and the screw rod is easy to manufacture and not easy to damage.
In this embodiment, the front end of screw rod 1 has cup jointed the steel washer 5 that is used for protecting steel construction X's surface not receive hexagon nut 4 scotch, and steel washer 5 increases one-way bolt and steel construction X's area of contact simultaneously, strengthens one-way bolt's connection effect, and seals the protection to one-way bolt and steel construction X's the face of being connected.
In the embodiment, at least 4 dovetail keys 2.3 are arranged, and a plurality of dovetail keys 2.3 are annularly arranged on the conical end 2.1 of the conical head screw sleeve 2 at equal intervals; spacing keyway 3.1 has seted up 4 at least, and a plurality of spacing open slot 3.1 equidistance ring is established at forked tail nut 3's forked tail and is served, and the spacing connection effect of a plurality of forked tail keys 2.3 and a plurality of spacing open slot 3.1 cooperation spacing reinforcing conical head swivel nut 2 and forked tail nut 3 improves conical head swivel nut 2 and forked tail nut 3's expansion effect, and then strengthens one-way bolt's joint strength.
In this embodiment: at least 4 pins 2.4 are arranged, and a plurality of pins 2.4 are annularly arranged on the conical end 2.1 of the conical head thread sleeve 2 at equal intervals; spacing keyway 3.1 has seted up 4 at least, and a plurality of spacing open slot 3.1 equidistance ring is established at dovetail nut 3's forked tail and is served, and the spacing connection effect of a plurality of pins 2.4 and a plurality of spacing open slot 3.1 cooperation spacing reinforcing conical head swivel nut 2 and dovetail nut 3 improves conical head swivel nut 2 and dovetail nut 3's expansion effect, and then strengthens one-way bolt's joint strength.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The one-way bolt comprises a screw rod, a conical head threaded sleeve and a dovetail nut, wherein the conical head threaded sleeve and the dovetail nut are sleeved on the screw rod, and the dovetail nut is close to the tail end of the screw rod;
the method is characterized in that: a semicircular key used for fixing the conical head thread insert in a steel plate hole is integrally formed at the front end of the conical head thread insert; the tail end of the conical head screw sleeve is arranged to be a conical end, and a plurality of dovetail keys are annularly arranged on the conical end;
the front end of the dovetail nut is provided with an expandable dovetail end, the dovetail end is provided with limiting open slots which are the same in number as the dovetail keys and correspondingly clamped with the dovetail keys, and the dovetail nut is limited and locked by the dovetail open slots which are clamped with the limiting key slots.
2. The one-way bolt of claim 1, wherein: and a hexagonal nut is arranged at the front end of the screw rod.
3. The one-way bolt of claim 1, wherein: the front end of the screw rod is sleeved with a steel washer used for protecting the surface of the steel structure from being scratched by the nut.
4. The one-way bolt of claim 1, wherein: the dovetail keys are at least provided with 4, and a plurality of dovetail keys are annularly arranged on the conical end of the conical head screw sleeve at equal intervals.
5. The one-way bolt of claim 1, wherein: the limiting key grooves are at least provided with 4 limiting key grooves, and a plurality of limiting key grooves are annularly arranged at the dovetail end of the dovetail nut at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123040443.8U CN216519061U (en) | 2021-12-06 | 2021-12-06 | One-way bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123040443.8U CN216519061U (en) | 2021-12-06 | 2021-12-06 | One-way bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216519061U true CN216519061U (en) | 2022-05-13 |
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ID=81467537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123040443.8U Active CN216519061U (en) | 2021-12-06 | 2021-12-06 | One-way bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216519061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017429A (en) * | 2021-12-06 | 2022-02-08 | 无锡周博建筑设计有限公司 | One-way bolt |
-
2021
- 2021-12-06 CN CN202123040443.8U patent/CN216519061U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017429A (en) * | 2021-12-06 | 2022-02-08 | 无锡周博建筑设计有限公司 | One-way bolt |
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