CN211174957U - Positive and negative double-nut self-locking screw - Google Patents
Positive and negative double-nut self-locking screw Download PDFInfo
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- CN211174957U CN211174957U CN201920714460.9U CN201920714460U CN211174957U CN 211174957 U CN211174957 U CN 211174957U CN 201920714460 U CN201920714460 U CN 201920714460U CN 211174957 U CN211174957 U CN 211174957U
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- hand thread
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- locking
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Abstract
The utility model belongs to the technical field of screws, in particular to a positive and negative double-nut self-locking screw, which comprises a locking object, wherein the right side of the locking object is provided with a locking object II, a hexagonal bolt is inserted in the middle of the locking object II, the peripheral surface of the hexagonal bolt is provided with a left-hand thread, at the moment, because of the nuts with positive and negative threads of a concave hexagonal nut and a trapezoidal hexagonal nut, the concave hexagonal nut can automatically move forwards under the action of friction force, the trapezoidal hexagonal nut retreats and is blocked and stopped, the whole screw is in a dead-weight state, the design form of the convex-concave nut can enhance the whole stability, and simultaneously, a movable space is provided, the screw with fixed length can lock objects with various thicknesses, and the utility model is suitable for the automatic locking of object fasteners of various machines of railways, bridges and automobiles, simple process, obvious effect and convenient up and down.
Description
Technical Field
The utility model belongs to the technical field of the screw, concretely relates to positive and negative double nut self-locking screw.
Background
The usefulness of screw is more in the life, and nut locking also is common mechanical connection mode among the prior art, and in some special fields that have vibrations, still require the nut to possess the auto-lock ability, for preventing to become flexible to arouse failure because of the nut in mechanical field, generally adopt the method to have: the anti-loose spring cushion is poor in reliability, the double nuts are anti-loose, the double nuts are easy to loose together, the GB/T6180-1986 hexagonal slotted nut is additionally provided with the split pin, accurate self-locking cannot be realized on any position when the nut is screwed, the tightness of the nut is inconsistent, certain requirements are met for an operation space, a small screw hole is vertically tapped on an outer hexagonal plane of the nut, the small screw does not have anti-loose performance, the stressed thread is damaged, Chinese patent No. 200410097308.9 discloses a nut which is externally sleeved with a set screw to achieve the locking purpose, the structure is complicated, the effect is similar to that of the small screw hole which is vertically tapped on the outer hexagonal plane of the nut, the nut cannot be suitable for a small space, the GB/T812-1988 round nut and the GB/T812-1988 round nut can ensure self-locking even though the anti-loose of the nut are matched by the stop washer, the self-locking cannot be realized accurately on any position when the nut is screwed, and a key groove is formed in the threaded section of the working shaft, so that the processing is complicated.
The problems of the prior art are as follows:
the existing screw has the problems that the structure is cumbersome, the screw cannot be adapted to a small space, the screw cannot be screwed down at any position for accurate self-locking, a key groove is formed in the thread section of the working shaft, and the processing is complicated.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a positive and negative double nut self-locking screw has accurate auto-lock, simple structure, convenient to use's characteristics.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a positive and negative double nut self-locking screw, contains a locking object, the right side of a locking object is provided with No. two locking objects, a locking object reaches No. two the centre interlude of locking object has hexagon bolt, hexagon bolt's peripheral surface is provided with left-hand thread, hexagon bolt's peripheral surface reaches left-hand thread's right-hand member is provided with the positive thread, the outer periphery of left-hand thread reaches No. two locking objects's right side is equipped with trapezoidal hexagon nut soon, trapezoidal hexagon nut's outer periphery right side is equipped with spill hexagon nut soon, trapezoidal hexagon nut reaches be provided with inboard positive thread between the spill hexagon nut.
Preferably, trapezoidal hexagon nut is T word annular, and is the hexagonal limit, and its trapezoidal hexagon nut's lower half peripheral surface is provided with the left-hand thread, and its trapezoidal hexagon nut's periphery is equipped with spill hexagon nut soon, through being provided with the left-hand thread at trapezoidal hexagon nut's peripheral surface, can with the inboard positive thread that the inboard surface of spill hexagon nut set up, establish the fastening soon, and it is simple and convenient to use.
Preferably, the inner side surface of the concave hexagonal nut is provided with an inner side right-hand thread, the concave hexagonal nut is circular, and the concave hexagonal nut and the trapezoidal hexagonal nut can be screwed and fastened by the inner side right-hand thread arranged on the inner side surface of the concave hexagonal nut.
Preferably, the top end of the hexagon bolt is hexagonal, and the top surface of the hexagon bolt is hexagonal, so that the hexagon bolt is attractive in shape.
Preferably, left-hand thread and right-hand thread all set up on hexagon bolt's peripheral surface, and its left-hand thread's screw thread is the wrong thread, and right-hand thread's screw thread is the positive thread, just the right-hand thread of back end is than the left-hand thread of anterior segment is a little thinner, and the screw thread through left-hand thread is the wrong thread, and right-hand thread's screw thread is the positive thread, and its right-hand thread is a little thinner than left-hand thread, is convenient for fix through the multilayer, its simple structure and convenient to use.
Preferably, the screw thread of the inner side right-hand thread is right, and is screwed synchronously with the right-hand thread, so that the concave hexagonal nut is convenient to fix, and the use is simple and convenient.
Compared with the prior art, the beneficial effects of the utility model are that: after the trapezoidal hexagon nut and the concave hexagon nut are screwed through the right-handed threads on the inner sides, the right-handed threads and the left-handed threads on the hexagon bolt automatically lock the first locking object and the second locking object, the right-handed threads and the left-handed threads on the front end of the hexagon bolt are not fixed but are necessarily in an opposite relationship, the right-handed threads on the rear section are necessarily slightly thinner than the right-handed threads on the front section, the nut can be loosened due to the vibration of the first locking object and the second locking object, namely the trapezoidal hexagon nut moves backwards to provide a friction force for the concave hexagon nut, at the moment, because of the nuts with the right-handed threads and the concave hexagon nut, the concave hexagon nut can automatically move forwards under the action of the friction force, the trapezoidal hexagon nut is blocked and stopped to retreat, the whole screw is in a dead state, and the design form of the convex-concave nut can enhance the overall stability, have mobilizable space simultaneously, the object of multiple different thickness can be locked to the screw of a kind of fixed length like this, just the utility model discloses be fit for the automatic locking of the object fastener of the various machinery of railway, bridge, car, simple process, the effect is showing, and is convenient from top to bottom.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 2 is a schematic view of the overall three-dimensional structure of the present invention;
fig. 3 is a schematic perspective view of the present invention;
in the figure: 1. locking the object; 2. locking the object; 3. a trapezoidal hexagonal nut; 4. a concave hexagon nut; 5. a hexagon bolt; 6. reversely threading; 7. screwing threads; 8. the inner side is positively threaded.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a positive and negative double nut self-locking screw, contain locking object 1 No. one, the right side of locking object 1 is provided with locking object 2 No. two, hexagonal bolt 5 has been interlude in the centre of locking object 1 and locking object 2 No. two, hexagonal bolt 5's peripheral surface is provided with left-hand thread 6, hexagonal bolt 5's peripheral surface and left-hand thread 6's right-hand member are provided with positive thread 7, trapezoidal hexagon nut 3 is equipped with soon around the outer periphery of left-hand thread 6 and the right side of locking object 2 No. two, the outer periphery right side of trapezoidal hexagon nut 3 is equipped with spill hexagon nut 4 soon, be provided with inboard positive thread 8 between trapezoidal hexagon nut 3 and the spill hexagon nut 4.
In this embodiment: through being provided with the turn-buckle screw thread at trapezoidal hexagon nut 3's peripheral surface, can with the inboard forward thread 8 that the inboard surface of spill hexagon nut 4 set up, establish the fastening soon, it is simple and convenient to use, through being provided with inboard forward thread 8 at the inboard surface of spill hexagon nut 4, can make spill hexagon nut 4 and trapezoidal hexagon nut 3 establish the fastening soon, top surface through hexagon bolt 5 sets up to the hexagon, its shape is pleasing to the eye, the screw thread through turn-buckle screw thread 6 is the left-hand thread, the screw thread of forward thread 7 is the positive thread, its forward thread 7 is thinner than turn-buckle screw thread 6, be convenient for fix through the multilayer, its simple structure and convenient to use, the screw thread through inboard forward thread 8 is positive, and go on in step with forward thread 7 screws, be convenient for fix spill hexagon nut 4, convenience simple to use.
Specifically, the trapezoidal hexagonal nut 3 is in a T-shaped ring shape and has a hexagonal side, the peripheral surface of the lower half part of the trapezoidal hexagonal nut 3 is provided with a left-hand thread, and the periphery of the trapezoidal hexagonal nut 3 is screwed with a concave hexagonal nut 4; the reverse thread is arranged on the peripheral surface of the trapezoidal hexagonal nut 3, and the reverse thread and the inner side forward thread 8 arranged on the inner side surface of the concave hexagonal nut 4 can be screwed and fastened, so that the use is simple and convenient.
Specifically, the inner side surface of the concave hexagonal nut 4 is provided with an inner side right-hand thread 8, and the concave hexagonal nut 4 is annular; the female hexagon nut 4 and the trapezoidal hexagon nut 3 can be screwed and fastened by providing the inner right-hand thread 8 on the inner surface of the female hexagon nut 4.
Specifically, the top end of the hexagon bolt 5 is hexagonal; the hexagonal bolt 5 has hexagonal top surface and beautiful shape.
Specifically, the left-hand thread 6 and the right-hand thread 7 are both arranged on the peripheral surface of the hexagon bolt 5, the threads of the left-hand thread 6 are left threads, the threads of the right-hand thread 7 are right threads, and the right-hand thread 7 at the rear section is slightly thinner than the left-hand thread 6 at the front section; the screw thread through left-hand thread 6 is the reverse thread, and the screw thread of right-hand thread 7 is positive, and its right-hand thread 7 is slightly thinner than left-hand thread 6, is convenient for fix through the multilayer, its simple structure and convenient to use.
Specifically, the thread of the inner side right-hand thread 8 is right-hand and is screwed synchronously with the right-hand thread 7; the threads of the inner right-hand thread 8 are right and are screwed synchronously with the right-hand thread 7, so that the concave hexagonal nut 4 is convenient to fix, and the use is simple and convenient.
The utility model discloses a theory of operation and use flow: when in use, after the trapezoidal hexagon nut 3 and the concave hexagon nut 4 are screwed through the inner right-hand thread 8, the first locking object 1 and the second locking object 2 are automatically locked by the left-hand thread 6 and the right-hand thread 7 arranged on the hexagon bolt 5, the threads of the left-hand thread 6 and the right-hand thread 7 at the front end are not fixed, but are necessarily in an opposite relation, the right-hand thread 7 at the rear end is certainly slightly thinner than the left-hand thread 6 at the front end, the nut can be loosened due to the vibration of the first locking object 1 and the second locking object 2, namely the trapezoidal hexagon nut 3 moves backwards to provide a friction force for the concave hexagon nut 4, at the moment, the concave hexagon nut 4 automatically moves forwards under the action of the friction force due to the nuts of the left-hand thread 4 and the right-hand thread of the trapezoidal hexagon nut 3, the trapezoidal hexagon nut 3 is blocked to stop moving backwards, the whole screw is pressed the dead state, and the design form of convex-concave nut can strengthen holistic stability, has mobilizable space simultaneously, and the screw of such a fixed length can lock the object of multiple different thickness, just the utility model discloses be fit for the automatic locking of the object fastener of the various machinery of railway, bridge, car, simple process, the effect is showing, and is convenient from top to bottom.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a positive and negative double nut self-locking screw which characterized in that: contain locking object (1) No. one, the right side of locking object (1) is provided with locking object (2) No. two, locking object (1) reaches No. two the centre interlude of locking object (2) has hexagon bolt (5), the peripheral surface of hexagon bolt (5) is provided with left-hand thread (6), the peripheral surface of hexagon bolt (5) reaches the right-hand member of left-hand thread (6) is provided with forward thread (7), outer periphery of left-hand thread (6) reaches the right side of locking object (2) No. two is revolved and is equipped with trapezoidal hexagon nut (3), the outer periphery right side of trapezoidal hexagon nut (3) is equipped with spill hexagon nut (4) soon, trapezoidal hexagon nut (3) reach be provided with inboard forward thread (8) between spill hexagon nut (4).
2. The positive and negative double-nut self-locking screw according to claim 1, characterized in that: the trapezoidal hexagonal nut (3) is in a T-shaped annular shape and is a hexagonal edge, the peripheral surface of the lower half part of the trapezoidal hexagonal nut (3) is provided with left-hand threads, and the periphery of the trapezoidal hexagonal nut (3) is spirally provided with a concave hexagonal nut (4).
3. The positive and negative double-nut self-locking screw according to claim 1, characterized in that: the inner side surface of the concave hexagonal nut (4) is provided with an inner side right-hand thread (8), and the concave hexagonal nut (4) is in a circular ring shape.
4. The positive and negative double-nut self-locking screw according to claim 1, characterized in that: the top end of the hexagonal bolt (5) is hexagonal.
5. The positive and negative double-nut self-locking screw according to claim 1, characterized in that: the left-hand thread (6) and the right-hand thread (7) are both arranged on the peripheral surface of the hexagon bolt (5), the left-hand thread (6) is a reversed thread, the right-hand thread (7) is a right thread, and the right-hand thread (7) of the rear section is slightly thinner than the left-hand thread (6) of the front section.
6. The positive and negative double-nut self-locking screw according to claim 1, characterized in that: the threads of the inner side right-hand thread (8) are right-hand and are screwed synchronously with the right-hand thread (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920714460.9U CN211174957U (en) | 2019-05-18 | 2019-05-18 | Positive and negative double-nut self-locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920714460.9U CN211174957U (en) | 2019-05-18 | 2019-05-18 | Positive and negative double-nut self-locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211174957U true CN211174957U (en) | 2020-08-04 |
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ID=71823614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920714460.9U Expired - Fee Related CN211174957U (en) | 2019-05-18 | 2019-05-18 | Positive and negative double-nut self-locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211174957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443550A (en) * | 2020-12-24 | 2021-03-05 | 北京天泰智汇科技有限公司 | Bolt structure capable of never loosening |
-
2019
- 2019-05-18 CN CN201920714460.9U patent/CN211174957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443550A (en) * | 2020-12-24 | 2021-03-05 | 北京天泰智汇科技有限公司 | Bolt structure capable of never loosening |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 Termination date: 20210518 |