CN212318506U - Locking bolt structure with step-shaped threads - Google Patents
Locking bolt structure with step-shaped threads Download PDFInfo
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- CN212318506U CN212318506U CN202021280126.6U CN202021280126U CN212318506U CN 212318506 U CN212318506 U CN 212318506U CN 202021280126 U CN202021280126 U CN 202021280126U CN 212318506 U CN212318506 U CN 212318506U
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- thread
- locknut
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- loosening
- external thread
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- 230000006872 improvement Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
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- 230000009471 action Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a locking bolt structure of step screw thread, include: check bolt, locknut and spring washer, check bolt includes head and screw rod, be provided with the external screw thread on the screw rod, the lower terminal surface of external screw thread is provided with down the step in succession, locknut and check bolt cooperation are provided with the internal thread on it, the internal screw thread up end be provided with can with the last step of the lower step interlock of external screw thread, the thread groove width of external screw thread is greater than internal thread width, the spring washer cooperation is overlapped on check bolt's screw rod, during the user state, the spring washer compresses tightly between waiting to fasten work piece and check nut, and produces elasticity, makes locknut's last step and check bolt's lower step interlock. This locking bolt structure of step screw thread, simple structure, simple to operate, low in cost correspond the interlock between the step that sets up on locking bolt and the lock nut and can reach locking effect.
Description
Technical Field
The utility model relates to a fastener provides a locking bolt structure of step screw thread very much.
Background
The bolt is the most common fastener in daily life, simple structure, convenient to use, wide application in various occasions. However, in some vibration occasions, the bolt for fastening is often loosened, so that the connecting piece is separated, inconvenience is brought to production and life, and sometimes even safety accidents are caused, so that it is necessary to design and manufacture a reliable anti-loosening bolt.
The existing anti-loose bolt structure is roughly divided into three types, wherein the first type is a double-nut structure, one nut is a fastening nut and is responsible for fastening objects, and the other nut is an anti-loose nut and is responsible for preventing the fastening nut from loosening; the second type is a locking tooth structure, wherein locking teeth are arranged on the bolt, and locking teeth are also arranged on the washer and are matched with each other, when the bolt loosening trend occurs, the locking teeth on the bolt and the locking teeth of the washer are staggered relatively, so that the bolt is stretched to generate tension, and the locking effect is achieved, however, when the bolt loosening trend is particularly large, the limitation of the locking teeth can be broken through, and the bolt loosening is generated; the third type is an expansion structure, which has an accurate requirement on the length of the bolt, and the adaptability of the bolt is not strong.
Therefore, it is an urgent problem to provide a locking bolt structure with simple structure and good locking effect.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a locking bolt structure of step screw thread to solve current locking bolt locking effect poor, the poor scheduling problem of adaptability.
The utility model provides a technical scheme is: a stepped thread lock bolt structure comprising: check bolt, locknut and elastic washer, wherein, check bolt includes head and screw rod, be provided with the external screw thread on the screw rod, the lower terminal surface of external screw thread is provided with the lower step in succession along the extending direction of external screw thread, locknut and check bolt cooperation are provided with the internal thread on it, the internal thread up end be provided with can with the last step of the lower step interlock of external screw thread, the thread groove width of external screw thread is greater than the internal thread tooth width, the elastic washer cooperation is overlapped on check bolt's screw rod, during the user state, the elastic washer compresses tightly between treating fastening work piece and locknut, and produces elasticity, makes locknut's last step and check bolt's lower step interlock.
Preferably, the external thread of each circle of the anti-loosening bolt is provided with a plurality of lower steps.
Further preferably, when the upper end surface of the external thread of the screw is fitted to the lower end surface of the internal thread of the locknut, a gap is formed between the lower step of the external thread of the screw and the upper step of the internal thread of the locknut.
Further preferably, the elastic washer is a disc washer.
Further preferably, the top of the locknut is connected with a flange plate, and the flange plate is provided with a clamping portion.
Preferably, the clamping portion is a circle of steps arranged along the upper top surface of the flange plate.
Further preferably, the external thread of the lockbolt and the internal thread of the locknut are triangular threads, rectangular threads, trapezoidal threads or sawtooth threads.
The utility model provides a locking bolt structure of step screw thread, novel in design, simple structure, simple to operate, low in cost rely on locking bolt's external screw thread and locknut's internal thread to be in the interlock effect of step department, and the use of deuterogamying the elastic washer can ensure can not take off by oneself the pine after the fastening.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments:
fig. 1 is a usage status diagram of a locking bolt structure with stepped threads provided by the present invention;
FIG. 2 is a schematic structural view of a check bolt;
FIG. 3 is a schematic structural view of the locknut;
FIG. 4 is a view showing the locking nut engaged with the locking bolt;
fig. 5 is a matching view of the locknut and the lockbolt in the dismounting process.
Detailed Description
The invention will be further explained below with reference to specific embodiments, without limiting the invention.
As shown in fig. 1 to 5, the utility model provides a locking bolt structure of step screw thread, include: the anti-loosening bolt comprises an anti-loosening bolt 1, an anti-loosening nut 2 and an elastic washer 3, wherein the anti-loosening bolt 1 comprises a head 11 and a screw 12, an external thread 121 is arranged on the screw 12, a lower step 1211 is continuously arranged on the lower end face of the external thread 121 along the extending direction of the external thread 121, the anti-loosening nut 2 is matched with the anti-loosening bolt 1, an internal thread 21 is arranged on the anti-loosening bolt, an upper step 211 capable of being meshed with the lower step 1211 of the external thread 121 is arranged on the upper end face of the internal thread 21, the width of a thread groove of the external thread 121 is larger than that of a thread of the internal thread 21, so that the anti-loosening nut mounted on the anti-loosening bolt can move along the radial direction of the anti-loosening bolt, the elastic washer 3 is matched and sleeved on the screw 12 of the anti-loosening bolt 1, and in a use state, the elastic washer 3 is tightly pressed between a workpiece 4 to be fastened and, and limiting the locknut 2 to reversely unscrew the lockbolt 1, wherein the lockbolt and the locknut are preferably made of SUS304 stainless steel materials.
This locking bolt structure of step screw thread can reach locking effect through the interlock between the step that corresponds the setting on locking bolt and locknut, and this locking bolt structure's installation as follows: because the width of the thread groove of the external thread of the locknut is larger than the width of the thread tooth of the internal thread of the locknut, when the locknut rotates downwards, the lower end surface of the internal thread of the locknut is attached to the upper end surface of the external thread of the locknut under the action of gravity, the upper step of the locknut is not engaged with the lower step of the locknut, the locknut can rotate flexibly, when the locknut contacts the elastic washer, the upper step of the locknut is attached to the lower step of the lockbolt, the locknut continues to rotate downwards to compress the elastic washer, the elastic washer generates upward elastic force to engage the upper step of the locknut with the lower step of the lockbolt (as shown in figure 4), at the moment, the locknut can only be screwed in one direction, after the pretightening force is reached, the installation is finished, in the use process, the locknut can be screwed out by 1/n turn at most due to the vibration, the upper step of the locknut is meshed with the lower step of the encountered lockbolt, the locknut cannot be screwed out continuously, and the purpose of locking is achieved, wherein n is the number of the lower steps arranged on the external thread of each circle of the lockbolt.
When the lockbolt structure is to be disassembled, firstly, the locknut is pressed downwards, a downward force is applied to the locknut, the locknut breaks through the elastic force of the elastic washer, and when an upper step of the locknut is separated from a lower step of the lockbolt (as shown in fig. 5), the locknut is rotated reversely, so that the locknut can be disassembled.
As a technical improvement, each circle of external thread of the lockbolt 1 is provided with a plurality of lower steps 1211, namely: the locking bolt has the advantages that the locking bolt is provided with a plurality of engagement points, the locking bolt cannot be loosened even in severe vibration, the locking effect is good, and the locking bolt has a wide market prospect in the field of fasteners, wherein the embodiment that each circle of external threads in the locking bolt is provided with 6 lower steps is shown in the attached drawing 2.
As an improvement of the technical solution, when the upper end surface of the external thread 121 of the screw 12 is engaged with the lower end surface of the internal thread 21 of the locknut 2, a gap exists between the lower step 1211 of the external thread 121 of the screw 12 and the upper step 211 of the internal thread 21 of the locknut 2, so as to facilitate the rotation of the locknut.
As a modification of the technical solution, as shown in fig. 1, the elastic washer 3 is a disc washer, and the disc washer can be stacked in 1, 2 or more according to different use environments, so as to meet different requirements, and the disc washer is preferably made of SUS304 stainless steel material.
As an improvement of the technical solution, as shown in fig. 3, the top of the locknut 2 is connected with a flange 22, the flange 22 is provided with a clamping portion 221, preferably, as shown in fig. 3, the clamping portion 221 is a circle of steps arranged along the upper top surface of the flange, and by arranging the flange and the clamping portion, the contact area is increased, so that the locknut can be conveniently detached by using a detaching tool matched with the flange and the clamping portion.
As the improvement of the technical scheme, the external thread of the anti-loose bolt 1 and the internal thread of the anti-loose nut 2 are triangular threads, rectangular threads, trapezoidal threads or sawtooth threads.
The embodiments of the present invention are written in a progressive manner, emphasizing the differences of the various embodiments, and similar parts can be referred to each other.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. Step threaded check bolt structure, its characterized in that includes: the anti-loosening bolt comprises an anti-loosening bolt (1), an anti-loosening nut (2) and an elastic washer (3), wherein the anti-loosening bolt (1) comprises a head (11) and a screw (12), an external thread (121) is arranged on the screw (12), a lower step (1211) is continuously arranged on the lower end face of the external thread (121) along the extending direction of the external thread (121), the anti-loosening nut (2) is matched with the anti-loosening bolt (1) and is provided with an internal thread (21), an upper step (211) capable of being meshed with the lower step (1211) of the external thread (121) is arranged on the upper end face of the internal thread (21), the width of a tooth groove of the external thread (121) is larger than that of the internal thread (21), the elastic washer (3) is matched and sleeved on the screw (12) of the anti-loosening bolt (1), and in a use state, the elastic washer (3) is tightly pressed between a workpiece (4) to be fastened, and generates elastic force to engage the upper step (211) of the locknut (2) with the lower step (1211) of the lockbolt (1).
2. The stepped thread lock bolt structure as claimed in claim 1, wherein: the external thread of each circle of the anti-loosening bolt (1) is provided with a plurality of lower steps (1211).
3. The stepped thread lock bolt structure as claimed in claim 1, wherein: when the upper end face of the external thread (121) of the screw (12) is attached to the lower end face of the internal thread (21) of the locknut (2), a gap exists between the lower step (1211) of the external thread (121) of the screw (12) and the upper step (211) of the internal thread (21) of the locknut (2).
4. The stepped thread lock bolt structure as claimed in claim 1, wherein: the elastic gasket (3) is a disc-shaped gasket.
5. The stepped thread lock bolt structure as claimed in claim 1, wherein: the top of locknut (2) is connected with ring flange (22), be provided with joint portion (221) on ring flange (22).
6. The stepped thread lock bolt structure as defined in claim 5, wherein: the clamping portion (221) is a circle of steps arranged along the upper top surface of the flange plate (22).
7. A stepped thread lock bolt structure according to any one of claims 1 to 6, wherein: the external thread of the anti-loosening bolt (1) and the internal thread of the anti-loosening nut (2) are triangular threads, rectangular threads, trapezoidal threads or sawtooth threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280126.6U CN212318506U (en) | 2020-07-02 | 2020-07-02 | Locking bolt structure with step-shaped threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280126.6U CN212318506U (en) | 2020-07-02 | 2020-07-02 | Locking bolt structure with step-shaped threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212318506U true CN212318506U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021280126.6U Expired - Fee Related CN212318506U (en) | 2020-07-02 | 2020-07-02 | Locking bolt structure with step-shaped threads |
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| Country | Link |
|---|---|
| CN (1) | CN212318506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637135A (en) * | 2020-07-02 | 2020-09-08 | 段培明 | Locking bolt structure with step-shaped threads |
-
2020
- 2020-07-02 CN CN202021280126.6U patent/CN212318506U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637135A (en) * | 2020-07-02 | 2020-09-08 | 段培明 | Locking bolt structure with step-shaped threads |
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| 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: 20210108 |