CN108571509A - Locking nut - Google Patents
Locking nut Download PDFInfo
- Publication number
- CN108571509A CN108571509A CN201710591577.8A CN201710591577A CN108571509A CN 108571509 A CN108571509 A CN 108571509A CN 201710591577 A CN201710591577 A CN 201710591577A CN 108571509 A CN108571509 A CN 108571509A
- Authority
- CN
- China
- Prior art keywords
- helical spring
- bolt
- downstream
- stop block
- wide diameter
- Prior art date
- 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.)
- Granted
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 41
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 20
- 238000005266 casting Methods 0.000 claims description 6
- 241001442589 Convoluta Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The present invention relates to a kind of locking nuts, wherein, stop block in the locking nut is integrally formed in the stage portion of nut main body and the inner peripheral surface of wide diameter portion abutted with the upstream end of helical spring, and the stop block is contacted into line with the bottom surface of helical spring along the hand of spiral or face contacts.
Description
Technical field
The present invention relates to locking nuts, and in more detail, being related to one kind can be with spiral shell in the state of reliably ensureing anti-loosening
Tether the locking nut for connecing and easily releasing connection with bolt by the external force of artificial action.
Background technology
There are multiple types for locking nut, as one of them, there is the type for using helical spring.
It is formed in the locking nut for using the helical spring：Screw thread process portion and wide diameter portion, the screw thread add
The Ministry of worker is formed in the hole of nut main body for connecting bolt, and the spiral shell for being combined with the bolt is built-in on the wide diameter portion
Spring is revolved, and is formed in the downstream end face of nut main body the grooving of the downstream bending section for fixing helical spring,
Wherein the downstream end face of nut main body is located at the upward downstream of connection side.
In the locking nut with this structure, when to connection direction rotating bolt or locking nut and so that bolt is logical
When crossing the screw thread process portion and being inserted into the helical spring, the bolt is connect with the screw thread process portion, then described
Bolt is contacted with the upstream end thereof for the helical spring that downstream bending section is fixed in grooving, to as shown in Figure 1a, institute
Helical spring is stated by expanding and so that bolt penetrates through the wide diameter portion, is contacted with the helical spring to the peripheral surface of bolt.
When towards when loosening direction to the bolt, locking nut application external force, power meeting downstream end is curved in this state
The helical spring that pars convoluta is fixed on grooving is transmitted along the power for loosening direction, and the helical spring can be stretched to direction is loosened
Undergauge is carried out as shown in Figure 1 b simultaneously, and to coordinate with the bolt presses, thus the bolt cannot turn to direction is loosened
It is dynamic, as a result, loose phenomenon will not occur.
But such locking nut has a following problem, i.e., cannot due to needing to safeguard by locking nut from spiral shell
Bolt loosens, to destroy locking nut.
To solve the above-mentioned problems, in the Korean granted patent the 10-1151721st applied and authorized by the present inventor
It discloses such as lower locking nut.
It is provided with stop block in locking nut disclosed above, the stop block is opposite with the upstream end of the helical spring
It is formed on the part inner peripheral surface of the wide diameter portion in stage portion to arrangement, the upstream end of helical spring can be engaged,
Described in helical spring be released from locking to the state for loosening direction and moving in downstream, stage portion is arranged in the screw thread
Between processing department and the wide diameter portion.As a result, in conjunction with when the helical spring downstream bending section become locking fulcrum and
Keep the helical spring whole expanding, then the locking fulcrum of the downstream bending section is released from when loosening, and described
The upstream end of helical spring becomes locking fulcrum, keeps the helical spring whole expanding.
But the stop block that locking nut disclosed above has is formed on the part inner peripheral surface of wide diameter portion, therefore
It cannot be demoulded in casting and forming, but need to carry out following operation.That is, for the nut master made by casting and forming
Stop block is fixed on the part inner peripheral surface of wide diameter portion by welding, or is applied to the portion perimeter face of wide diameter portion by body
Plus-pressure and it is prominent to the part inner peripheral surface of wide diameter portion, thus there are problems that increase manufacturing expense.
In addition, being put down when the helical spring is placed in conduct set between the screw thread process portion and the wide diameter portion
When in the stage portion in smooth face, since the bottom surface of the helical spring is tilted to the hand of spiral, with the helical spring
Between left part and right part of the line of downstream bending section and upstream end connection as the helical spring of benchmark, due to weight
Measure different relationship, it can a side section of the weight in part tilts to the left and right due to dead weight.As a result, becoming naturally
The central axis of the helical spring posture inconsistent with the central axis in the screw thread process portion for being formed in nut main body (tilts
Posture), therefore there are the following problems, that is, operating personnel is difficult to axis direction and the screw thread so that the helical spring
While the posture that the axis direction of processing department is consistent, the downstream bending section of the helical spring is inserted into described cut
In slot.
Even if operating personnel can be such that the axis direction of the helical spring is protected with the axis direction in the screw thread process portion
While holding consistent posture, the downstream bending section of the helical spring is inserted into the grooving.But by institute
State in the state that the upstream end of helical spring carries out point contact with the stage portion, the downstream bending section of the helical spring with
The bottom of the grooving is contacted into line.Therefore make in the line connected with upstream end with the downstream bending section of the helical spring
On the basis of, between the left part and right part of helical spring, also due to the relationship to vary in weight, it will be with screw thread process portion
The central axis of downstream bending section of the helical spring of central axis upright be placed in center and to the left and right in part
Weight a side section convolution and tilt.As a result, so that the central axis of the helical spring and it is formed in nut main body
The central axis in screw thread process portion keep inconsistent posture (inclined posture), connect with the screw thread process portion to interfere
Connect and the bolt entered to the upstream end of the helical spring be inserted into the helical spring, cause exist be difficult to realize connect
The problem of operation.
Invention content
The invention technical task to be solved
Problem of the present invention is that solving the above problems.
Problem solution
By the present invention in that contacted into line with the bottom surface of helical spring along the hand of spiral or face contact stop block one
Body is formed in the inner peripheral surface of the stage portion and wide diameter portion of the nut main body abutted with the upstream end of helical spring, so as to solve
The above subject.
Invention effect
By Problem solution as described above, in the present invention, stop block is in a manner of it can carry out casting and forming
It is integrally formed in the stage portion of nut main body and the inner peripheral surface of wide diameter portion, thus it is compared with the past, manufacture can be significantly decreased
Expense.The bottom surface of helical spring is contacted with stop block line along the hand of spiral or face contacts, so as to preventing because of left-hand portion and
Weight differential between right side position and rotated centered on the central axis of the downstream bending section of helical spring, make the spiral shell
The central axis and the central axis in the screw thread process portion for being formed in nut main body for revolving spring are consistent.To make operating personnel
It is easy to carry out the assembling operation that helical spring is built in wide diameter portion, while making to connect with the screw thread process portion and to described
The bolt that the upstream end of helical spring enters can be neatly inserted into the helical spring, be capable of providing and be easily achieved connection
The function and effect of operation.
Description of the drawings
Fig. 1 a and Fig. 1 b are to illustrate the state when helical spring of locking nut is combined with bolt of being built in and from bolt
The concept map of state when release.
Fig. 2 a and Fig. 2 b be illustrate Fig. 1 helical spring be not accommodated in nut main body state sectional view and solid
Figure.
Fig. 3 is the sectional view for illustrating the helical spring reception of Fig. 1 in the state of nut main body.
Fig. 4 is perspective view when illustrating the stop block for being observed from the front Fig. 2.
Reference sign
10：Helical spring, 11：Downstream bending section, 20：Nut main body, 21：Recess portion, 24：Stop block, 50：Bolt.
Specific implementation mode
Hereinafter, embodiment of the present invention is described in detail with reference to Fig. 2 a to Fig. 4.
In Fig. 2 a, Fig. 2 b and Fig. 3, the disposable locking nut of the present embodiment is shown with reference numeral 100.
As shown in figure 3, the locking nut 100 includes helical spring 10.
As illustrated in figs. 1A and ib, it is formed with the diameter towards the helical spring 10 in the downstream of the helical spring 10
To the downstream bending section 11 being bent outwardly, the upstream end 12 of the helical spring 10 is curved with the downstream in radial directions
Pars convoluta 11 is positioned opposite.
The helical spring 10 is wound up as spiral-shaped so that the threaded portion 51 of bolt 50 can be from the helical spring 10
Upstream end 12 penetrate through downstream and combined with the helical spring 10.
As shown in figure 3, when being inserted and fixed in the nut main body for being formed in subsequent descriptions in the downstream bending section 11
In the state of 20 recess portion 21, make bolt 50 with the upstream end in contact of the helical spring 10 and to connecting direction (Fig. 1 a's
When rotating clockwise), the helical spring 10 can to frictionally contact and expanding with the threaded portion of bolt 50, to
Bolt 50 is allowed to be readily inserted into the downstream of the helical spring 10.
In addition, as shown in figure 3, being inserted and fixed when in the downstream bending section 11 in being formed in the nut main body 20
Recess portion 21 and inserted with bolt 50 in the state of, make bolt 50 to loosen direction (in counter clockwise direction of Fig. 1 b) rotate when,
Since the helical spring 10 contacts to frictionally with the threaded portion of bolt 50, by undergauge, to prevent bolt 50 from holding
It changes places and is loosened from the upstream end of the helical spring 10.
As shown in Figure 2 a and 2 b, in the nut main body 20, it is being located at upstream side upwards with the connection side of bolt 50
Nut main body inner peripheral surface on be provided with the screw thread process portion 22 being connect with bolt 50, and be located at downstream upwards in connection side
Wide diameter portion 23 is provided on the inner peripheral surface of the nut main body of side, which has bigger than the internal diameter in the screw thread process portion 22
Internal diameter, and helical spring 10 on wide diameter portion 23 in be set to and be radially-inwardly inscribed in predetermined space the wide diameter portion 23.
In addition, the helical spring 10 for being inscribed in the wide diameter portion 23 in order to prevent is detached to outside the nut main body 20, institute
The wide diameter portion 23 for stating nut main body 20 includes the upstream stage portion 23a and downstream stage portion 23b along connection direction arrangement.
In addition, in the nut main body 20, the downstream stage portion 23b's exposed to the central axial direction of bolt 50
Recess portion 21 is formed on surface, as shown in figure 3, with downstream of the inserting mode inserted with the helical spring 10 in the recess portion 21
Bending section 11 is held, the upstream end 12 of the helical spring 10 is contacted with the upstream stage portion 23a.
Why the downstream bending section 11 of the helical spring 10 is inserted into inserting mode in the recess portion 21, be because
For when to nut main body 20 or bolt 50 towards when loosening direction to the application external force of the helical spring 10, the downstream is bent
Portion 11 can be detached from from the recess portion 21.
In addition, being provided with stop block 24 on the nut main body 20, the stop block 24 is arranged along the wide diameter portion 23
Circumferential direction and be built in the wide diameter portion 23 helical spring 10 upstream end 12 interval and opposite position, the backstop
Block 24 is protruded from the downstream ends the upstream stage portion 23a side, and is radially-inwardly protruded from the inner peripheral surface of the wide diameter portion 23,
To which stop block 24 and the inner peripheral surface of the upstream stage portion 23a and the wide diameter portion 23 are combined as a whole.
The stop block 24 is prominent from the inner peripheral surface and the upstream stage portion 23a of the wide diameter portion 23, therefore makes
Nut main body 20 can be made by casting and forming.
As shown in figure 4, on the axis direction of the helical spring 10, for the stop block 24 relative to it is described on
The face of the bottom surface of the opposed helical coil springs 10 of stage portion 23a is swum, in order to enable the face is along the hand of spiral and the spiral
The portion bottom surface of spring 10 is contacted into line or face contacts, the axis of the above-mentioned face of the stop block 24 in the helical spring 10
There is curvature identical with the curvature of the helical spring 10 on direction, on the axis direction of the helical spring 10, it is described only
The connection direction of the thickness of block 24 towards the bolt 50 is thicker.
In the case where helical spring 10 has circular section, the face of the stop block 24 and the helical spring 10
Portion bottom surface can be contacted along the hand of spiral into line, with trackSection in the case of, then the face of progress connects
It touches.Face contact is illustrated in the present embodiment.
On 10 axis direction of the helical spring, the downstream thickness of the stop block 24 is the helical spring 10
More than the bore of upstream end, and less than a screw pitch of the helical spring 10.
In addition, the bolt 50 in the radial direction, the thickness of the stop block 24 is the upper of the helical spring 10
It is more than the bore for swimming end, and the radial width less than the upstream stage portion 23a.
The locking nut 100 of structure as described above can be operated as follows.
While the threaded portion 51 of bolt 50 to be inserted into the screw thread process portion 22 of the locking nut 100, make spiral shell
When bolt 50 is rotated to connection direction, the threaded portion 51 of bolt 50 penetrate through the screw thread process portion 22 and with the screw thread process portion 22
Connection.When further rotating the bolt 50 to connection direction, the threaded portion 51 of bolt 50 can be with the helical spring 10
Upstream end 12 contact to frictionally, and to connection direction to the helical spring 10 apply pressure.At this point, due to described
20 downstream bending section 11 of helical spring is inserted into the recess portion 21 of the nut 20 and is fixed in the hand of spiral, therefore spiral bullet
Spring 20 can be expanding, and the helical spring 10 can be easily penetrated through to the threaded portion 51 of the bolt 50.Then, when stopping institute
When stating rotation of the bolt 50 towards connection direction, to the helical spring 10 caused by the threaded portion 51 of the bolt 50
The pressure that connection side applies upwards can release, and to the meeting undergauge of the helical spring 10, and be placed in the screw thread of the bolt 50
The ditch portion in portion 51 and radially inward elastic force is applied to the threaded portion 51, thus prevent because non-artificial's
External force and release the connection between the nut main body 20 and the bolt 50.
In this state, need to unclamp the nut 20 from bolt 50 and safeguarded and in the case of, when to loosening
When direction rotates the nut 20, the threaded portion 51 of the bolt 50 can to frictionally be contacted with the helical spring 10 and to
Direction is loosened to apply pressure to the helical spring 10 and make its undergauge.At this point, when curved to the downstream of the helical spring 10
When edge more than the application of pars convoluta 11 is predetermined loosens the external force in direction, the downstream bending section 11 can be detached from from the recess portion 21,
Or the inner curve position of the downstream bending section 11 is concentrated the pressure applied by the recess portion 21 and is cut off, thus institute
Downstream bending section 11 is stated to detach from the helical spring 10.As a result, in the helical spring 10, upstream end 12 and downstream
Bending section 11 is in connection direction and loosens as free end on direction, so as in the wide diameter portion 23 along the nut 20
Circumferential surface is moved relative to the nut main body 20 together with bolt 50.In this state by the nut main body 20 to loosening direction
When further rotating certain angle, the stop block 24 contacts the upstream end 12 with the helical spring 10, stops to described
Block 24 applies pressure to the upstream end 12 of the helical spring 10 so that the helical spring 10 is expanding.Thus the bolt
50 by the obstruction of the helical spring 10 and easily will not rotate and from the locking to loosening direction on loosening direction
Connection is released on nut 100.
The helical spring 10 of the wide diameter portion 23 of the nut main body 20 is inserted into because the downstream bending section 11 is sent out
The shape that changes and be detached from from the recess portion 21 or be cut off and detached from the wide diameter portion 23, therefore cannot recycle and can be given up
It abandons, so as to prevent from recycling so that cannot be attempted to again once the locking nut loosened, thus, it is possible to prevent detaching
When because strained existing locking nut may cause generate safety accident.
By Problem solution as described above, in the present invention, by making stop block to be capable of the side of casting and forming
Formula is integrally formed in the stage portion of nut main body and the inner peripheral surface of wide diameter portion, thus it is compared with the past, it can significantly decrease
Manufacturing expense.The underrun of helical spring is contacted with stop block into line along the hand of spiral, so as to prevent because of left side
Weight differential point between right side position and rotated centered on the central axis of the downstream bending section of helical spring, make described
The central axis of helical spring and the central axis in the screw thread process portion for being formed in nut main body are consistent.To operating personnel
Can easily be done the assembling operation that helical spring is built in wide diameter portion, at the same make to connect with the screw thread process portion and to
The bolt that the upstream end of the helical spring enters neatly is inserted into the helical spring, and connection is easily achieved to provide
The function and effect of operation.
Claims (3)
1. a kind of locking nut, including：
Helical spring (10), the helical spring (10) are used for the threaded portion (51) for bolt (50) from the helical spring (10)
Upstream end (12) perforation downstream and be connected to the helical spring (10), and be formed with bend radially outward downstream
Bending section (11)；And
Nut main body (20), the nut main body (20) include：
Screw thread process portion (22), which is formed in the edge of the nut main body (20) and the bolt (50) connect
The direction connect is located on the inner peripheral surface of upstream side, for being connect with the bolt (50)；
Wide diameter portion (23), the wide diameter portion (23) have the internal diameter bigger than the internal diameter of the screw thread process portion (22), the spiral bullet
Ground connection is contained in the wide diameter portion (23) in spring (10), and the wide diameter portion (23) is formed along the connection with the bolt (50)
On direction on the inner peripheral surface in downstream side, edge and the bolted direction arrangement are provided on the wide diameter portion (23)
Upstream stage portion (23a) and downstream stage portion (23b), with can prevent the helical spring (10) to the wide diameter portion (23) outside
It is detached from；And
Recess portion (21), the recess portion (21) are formed in the downstream step exposed to the central axial direction of the bolt (50)
On the surface in portion (23b), to be inserted into the downstream bending section (11) of the helical spring (10), which is characterized in that
Casting and forming has stop block (24), the stop block (24) to be set in the wide diameter portion (23) on the locking nut
It is spaced with the upstream end of the helical spring (10) (12) in circumferential direction and on position positioned opposite, the stop block (24)
From the upstream stage portion (23a) downstream end side and from the inner circumferential of the wide diameter portion (23) towards radially-inwardly protruding, and
And the inner peripheral surface of the stop block (24) and the upstream stage portion (23a) and the wide diameter portion (23) is combined as a whole.
2. locking nut according to claim 1, which is characterized in that
On the axis direction of the helical spring (10), for the stop block (24) and relative to the upstream stage portion
The face in the corresponding face in bottom surface of the helical spring (10) of (23a), the stop block (24) has and the spiral
The identical curvature of curvature of spring (10), with can be along the portion bottom surface of the hand of spiral and the helical spring (10) into line
Contact or face contact, on the axis direction of the helical spring (10), the thickness of the stop block (24) with the spiral shell
The direction of bolt (50) connection is more and more thicker from upstream end towards downstream.
3. locking nut according to claim 2, which is characterized in that
On the axis direction of the helical spring (10), the downstream thickness of the stop block (24) is in the helical spring
(10) more than the bore of upstream end, and it is less than a screw pitch of the helical spring (10),
The bolt (50) in the radial direction, the upstream end of the thickness of the stop block (24) in the helical spring (10)
Bore more than, and less than the upstream stage portion (23) radial width.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0029941 | 2017-03-09 | ||
| KR20170029941 | 2017-03-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108571509A true CN108571509A (en) | 2018-09-25 |
| CN108571509B CN108571509B (en) | 2020-02-21 |
Family
ID=63576110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710591577.8A Active CN108571509B (en) | 2017-03-09 | 2017-07-19 | Locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108571509B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173829A (en) * | 2020-03-20 | 2020-05-19 | 兰州鑫博电子信息技术有限公司 | Elastic thread bolt never loose |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694022A (en) * | 1991-07-10 | 1994-04-05 | Alian Internatl Ag | Detent nut |
| US5449259A (en) * | 1994-03-11 | 1995-09-12 | Warn Industries, Inc. | Thread locking device |
| EP1760334A1 (en) * | 2004-06-07 | 2007-03-07 | Taijiro Soeda | Falling-off prevention device and loosening prevention nut |
| CN101360924A (en) * | 2006-12-07 | 2009-02-04 | 动力雷克斯株式会社 | Anti-loose lock nut |
| CN102171476A (en) * | 2008-10-08 | 2011-08-31 | Ntn株式会社 | Torque limiter |
| KR101151721B1 (en) * | 2012-01-20 | 2012-07-03 | (주)금산이엔씨 | Disposable lock nut |
| CN104271967A (en) * | 2012-04-27 | 2015-01-07 | 株式会社Khi | Drop-out prevention tool |
| CN104541073A (en) * | 2013-05-31 | 2015-04-22 | 锁定装置有限责任公司 | Locknut with cage |
| CN106151227A (en) * | 2015-04-24 | 2016-11-23 | 铃木康之 | The anti-drop device of clamp nut |
-
2017
- 2017-07-19 CN CN201710591577.8A patent/CN108571509B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694022A (en) * | 1991-07-10 | 1994-04-05 | Alian Internatl Ag | Detent nut |
| US5449259A (en) * | 1994-03-11 | 1995-09-12 | Warn Industries, Inc. | Thread locking device |
| EP1760334A1 (en) * | 2004-06-07 | 2007-03-07 | Taijiro Soeda | Falling-off prevention device and loosening prevention nut |
| CN101360924A (en) * | 2006-12-07 | 2009-02-04 | 动力雷克斯株式会社 | Anti-loose lock nut |
| CN102171476A (en) * | 2008-10-08 | 2011-08-31 | Ntn株式会社 | Torque limiter |
| KR101151721B1 (en) * | 2012-01-20 | 2012-07-03 | (주)금산이엔씨 | Disposable lock nut |
| CN104271967A (en) * | 2012-04-27 | 2015-01-07 | 株式会社Khi | Drop-out prevention tool |
| CN104541073A (en) * | 2013-05-31 | 2015-04-22 | 锁定装置有限责任公司 | Locknut with cage |
| CN106151227A (en) * | 2015-04-24 | 2016-11-23 | 铃木康之 | The anti-drop device of clamp nut |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173829A (en) * | 2020-03-20 | 2020-05-19 | 兰州鑫博电子信息技术有限公司 | Elastic thread bolt never loose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108571509B (en) | 2020-02-21 |
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