CN111043136A - Locking device for bolt and nut - Google Patents
Locking device for bolt and nut Download PDFInfo
- Publication number
- CN111043136A CN111043136A CN201910432540.XA CN201910432540A CN111043136A CN 111043136 A CN111043136 A CN 111043136A CN 201910432540 A CN201910432540 A CN 201910432540A CN 111043136 A CN111043136 A CN 111043136A
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- stop pin
- radial
- spring ring
- 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.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Images
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
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a locking device of a bolt and a nut, which comprises at least one axial groove which is parallel to a bolt shaft and penetrates through a part of external thread surface of a screw rod on the bolt; one end of the nut is provided with at least one pair of radial grooves perpendicular to the axis of the bolt; and the circlip stop pin, its characterized in that: the bolt with the nut is by fastener pretension back, will radial groove vertical alignment the axial groove, between radial groove and the spring pad that flattens to and the axial groove constitutes the locking pinhole, with the both ends hook-in respectively of circlip stop pin the locking pinhole, and opposite in the radial groove jack, by the elasticity of circlip, through the straight shape stop pin grip at both ends open have the bolt of axial groove, the locking bolt and nut, circlip in the middle of the circlip stop pin has elasticity, curved, both ends are the stop pin of crooking inwards, and the device is applicable in the fastening of the different thickness of same length bolt by the fastener, and the commonality is good, can relapse dismouting reuse.
Description
Technical Field
The present invention relates to fasteners and more particularly to circlip stop pins with a portion of the threaded surface through which the pin passes, as well as to notched bolts and notched or pin-hole nuts.
Background
The Chinese patent application No. 86105932 triple safety bolt discloses: the bolt is provided with a radial spring top clip, and the nut is matched with the bolt and has a pawl on the inner diameter, the pawl and the clip are matched with each other to prevent the nut from loosening and losing, and the nut is also provided with a groove so that the bolt and the nut are connected by using a split pin to prevent the nut from loosening. The bolt and nut locking device has the advantages that when the nut moves at the position where the nut is screwed and pre-tightened on the bolt, the pin hole perpendicular to the bolt shaft can be drilled on the bolt again, the bolt and nut locking device capable of automatically adjusting the height of the pin hole along with different thicknesses of a fastened piece cannot be achieved, and accordingly the bolt and nut locking device is not universal and brings inconvenience to use.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a bolt and nut locking device which can be universally used for locking bolts and nuts of fastened pieces with different thicknesses.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a locking device of a bolt and a nut, which comprises at least one axial groove which is parallel to a bolt shaft and penetrates through the external thread surface of a screw rod on a part of the bolt; one end of the nut is provided with at least one pair of radial grooves perpendicular to the axis of the bolt; and the circlip stop pin, its characterized in that: the end of the nut with the radial groove faces the fastened piece, the screw rod of the bolt with the axial groove, which penetrates through the screw hole of the fastened piece, is screwed in, after pre-tightening, the radial groove at one end of the nut is vertically aligned with the axial groove of the bolt, at the moment, a stop pin hole is formed among the radial groove of the nut, the spring pad or the flat washer and the axial groove of the bolt, and then one end of the spring ring stop pin is hooked and inserted into the stop pin hole; the other end of the spring ring stop pin is inserted into a jack which is symmetrical with the stop pin hole by 180 degrees and is formed between a radial groove and a spring pad, or a flat washer, or a fastened piece at one end of the nut, the spring ring stop pin tightly clamps the bolt with the axial groove through the elasticity of the spring ring at the annular part of the spring ring stop pin and the stop pins at the two ends of the spring ring stop pin, so that the bolt and the nut are locked by the spring ring stop pin, and the internal thread of the nut cannot be screwed and loosened on the external thread of the screw rod.
The spring ring stop pin is made of steel, the spring ring in the middle part is elastic and arc-shaped, the stop pins at two ends are disconnected straight stop pins on the same straight line, the tail ends of the straight stop pins correspond to each other, and the distance between disconnected end points is smaller than the diameter of the bolt after the axial groove is removed when the straight stop pins are not used; the spring ring in the middle of the arc-shaped part of the spring ring stop pin is respectively connected with the straight stop pins at two ends and is bent inwards; the section of the circlip stop pin is rectangular, circular or elliptical.
At least one pair of radial grooves of the nut are symmetrically distributed on the nut axis, and the section of each radial groove is open rectangular; or open segment shaped; or at least a pair of radial grooves which are circular, namely the radial grooves which are vertical to the wall of the nut are radial circular through holes and are symmetrically distributed on the axis of the nut, and the length of the radial grooves is the radial thickness of the nut.
The bolt comprises a bolt head and a stud-shaped screw rod, and the section of an axial groove in the screw rod is rectangular; or open circular; or open oval, the length of the axial slot being at least a portion of the length of the shank of the bolt.
The bolt with the axial grooves which are parallel to the bolt shaft and penetrate through a part of the thread surface of the bolt is adopted, so that the nut with at least one pair of radial grooves which are vertical to the bolt shaft can move on the bolt in a spiral mode, the fastened piece is pre-fastened, the axial grooves of the bolt are vertically communicated with the radial grooves of the nut, and the bolt and the radial grooves of the nut form a stop pin hole together with a spring pad, the stop pin hole can move and change along with the pre-fastening thickness of the two fastened pieces, the bolt can be locked by spring ring stop pins of the fastened piece with different thicknesses, and the spring ring stop pin locking device has universal applicability.
The invention is further illustrated below with reference to the figures and examples.
Drawings
Fig. 1 is a schematic structural view of a locking device of a bolt and a nut of the invention.
Fig. 2 is a view of the circlip stop pin of fig. 1.
Fig. 3 is one of the sectional views a-a in fig. 2.
Fig. 4 is a second sectional view a-a of fig. 2.
Fig. 5 is a view showing the structure of the nut of fig. 1.
Fig. 6 is one of the bolt construction views of fig. 1.
Fig. 7 is a structural view of a frustum-shaped anti-vibration bolt with an axial groove according to the present invention.
In the figure:
100. bolt 101, bolt head
102. Bolt rod 103 and external screw thread of screw rod
104. Axial groove 105, frustum-shaped vibration-proof bolt
106. Frustum-shaped wedge 200 and nut
201. Nut internal thread 202, radial groove
203. Nut wall 204, round through hole
300. Circlip stop pin 301, circlip
302. Stop pin 400, spring washer
500. Flat washer 600 and quilt fastener A
700. Fastened piece B800 and stop pin hole
900. Jack hole
Detailed Description
In fig. 1, the locking device of bolt and nut of the present invention has at least one axial groove 104 on the bolt 100 parallel to the axis of the screw and passing through the external thread 103 of the screw of a part of the bolt 100; the nut 200 has six pairs of 12 radial grooves 202 at one end perpendicular to the axis of the bolt 100; and a circlip stop pin 300, characterized by: the end of the nut with the radial groove 202 faces the fastened piece A600 and the fastened piece B700, the screw rod 102 of the bolt 100 with the axial groove 104 is screwed into the fastened piece A600 and the fastened piece B700, after pre-tightening, the radial groove 202 at one end of the nut 200 is vertically aligned with the axial groove 104 of the bolt 100, at the moment, a stop pin hole 800 is formed among the radial groove 202 of the nut 200, the spring pad 400 or the flat washer 500 and the axial groove 104 of the bolt 100, and then one end of the spring ring stop pin 300 is hooked and inserted into the stop pin hole 800; the other end of the circlip stop pin 300 is inserted into a jack 900 which is symmetrical with the stop pin hole 800 at 180 degrees and is formed between a radial groove 202 and a spring cushion 400 or a flat washer 500 or a fastened piece A600 at one end of a nut 200, the circlip stop pin 300 tightly clamps the bolt 100 with an axial groove 104 through the elasticity of an annular part 301 of the circlip stop pin 300 and stop pins 302 at two ends of the circlip stop pin, so that the circlip stop pin 300 locks the bolt 100 and the nut 200, and the nut internal thread 201 cannot be screwed loose on the screw rod external thread 103.
When the locking device of the bolt and the nut is disassembled, firstly, the stop pins 302 at two ends of the circlip stop pin 300 are pulled out from the stop pin hole 800 and the insertion hole 900 by a tool, then the nut 200 is screwed out from the bolt rod 102, the bolt rod 102 in the screw hole is pulled out, and after the disassembly is finished, the device can be repeatedly assembled and disassembled for use.
In fig. 2 to 4, the circlip stop pin 300 of the present invention is made of steel, the circlip 301 in the middle is elastic and arc, the stop pins 302 at both ends are broken straight stop pins 302 on the same straight line, the tail ends of the straight stop pins 302 correspond to each other, and the distance between the broken end points in fig. 1 is smaller than the diameter of the bolt 100 after the axial groove 104 is removed; the circlip 301 at the middle part of the circlip stop pin 300 is respectively connected with the straight stop pins 302 at two ends and is bent inwards; the circlip stop pin 300 is rectangular, circular, or elliptical in cross section.
In fig. 5, three radial grooves 202 of the nut 200 according to the present invention are shown, each pair is 2 radial grooves 202 symmetrically distributed around the nut axis, and the cross section of each radial groove 202 is an open rectangle; or open segment shaped; or circular, i.e. the radial grooves 202 are radial circular holes, at least one pair of radial circular holes are distributed symmetrically around the nut axis, i.e. at least one pair of radial circular through holes 204 are vertically drilled on the nut wall 203, and the length of the radial grooves 202 or the radial circular through holes 204 is the radial thickness of the nut 200.
In fig. 6, the bolt 100 of the present invention is provided with at least one axial groove 104 parallel to the bolt axis and passing through a part of the external thread 103 of the screw, and the cross section of the axial groove 104 is open rectangular; or open circular; or open oval, the length of the axial slot 104 being at least a portion of the length of the shank 102 of the bolt 100.
In fig. 7, in the special shape of the bolt 100 in fig. 1, there is a frustum-shaped wedge 106 coaxially connected between the bolt head 101 and the stud-shaped bolt shaft 102, and there is at least one axial groove 104 parallel to the bolt axis on the external thread 103 of the screw of the frustum-shaped anti-vibration bolt 105, which is used in conjunction with the nut 200 of the present invention, and its structure and principle are the same as the bolt 100 in fig. 1, and will not be described here, and fig. 7 can also be a bolt head of a hexagon socket head, or other shapes.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is defined by the appended claims.
Claims (6)
1. A bolt and nut locking device comprises a bolt with at least one axial groove parallel to the axis of the bolt and passing through the outer thread surface of a screw rod on a part of the bolt; one end of the nut is provided with at least one pair of radial grooves perpendicular to the axis of the bolt; and the circlip stop pin, its characterized in that: the end of the nut with the radial groove faces the fastened piece, the screw rod of the bolt with the axial groove, which penetrates through the screw hole of the fastened piece, is screwed in, after pre-tightening, the radial groove at one end of the nut is vertically aligned with the axial groove of the bolt, at the moment, a stop pin hole is formed among the radial groove of the nut, the spring pad or the flat washer and the axial groove of the bolt, and then one end of the spring ring stop pin is hooked and inserted into the stop pin hole; the other end of the spring ring stop pin is inserted into a jack which is symmetrical with the stop pin hole by 180 degrees and is formed between a radial groove and a spring pad, or a flat washer, or a fastened piece at one end of the nut, the spring ring stop pin tightly clamps the bolt with the axial groove through the elasticity of the spring ring at the annular part of the spring ring stop pin and the stop pins at the two ends of the spring ring stop pin, so that the bolt and the nut are locked by the spring ring stop pin, and the internal thread of the nut cannot be screwed and loosened on the external thread of the screw rod.
2. A bolt and nut locking apparatus according to claim 1, wherein: the spring ring stop pin is made of steel, the spring ring in the middle part is elastic and arc-shaped, the stop pins at two ends are disconnected straight stop pins on the same straight line, the tail ends of the straight stop pins correspond to each other, and the distance between disconnected end points is smaller than the diameter of the bolt after the axial groove is removed when the straight stop pins are not used; the spring ring in the middle of the arc-shaped part of the spring ring stop pin is respectively connected with the straight stop pins at two ends and is bent inwards; the section of the circlip stop pin is rectangular, circular or elliptical.
3. A bolt and nut locking apparatus according to claim 1, wherein: at least one pair of radial grooves of the nut are symmetrically distributed on the nut axis, and the section of each radial groove is open rectangular; or open segment shaped; or at least a pair of radial grooves which are circular, namely the radial grooves which are vertical to the wall of the nut are radial circular through holes and are symmetrically distributed on the axis of the nut, and the length of the radial grooves is the radial thickness of the nut.
4. A bolt and nut locking apparatus according to claim 1, wherein: the section of the axial groove of the bolt is rectangular with an opening; or open circular; or open oval, the length of the axial slot being at least a portion of the length of the shank of the bolt.
5. A bolt and nut locking apparatus according to claim 4, wherein: the bolt comprises a bolt head and a stud-shaped screw rod.
6. A bolt and nut locking apparatus according to claim 4, wherein: the bolt is provided with a frustum-shaped wedge which is coaxially connected between the bolt head and the stud-shaped screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432540.XA CN111043136A (en) | 2019-05-13 | 2019-05-13 | Locking device for bolt and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910432540.XA CN111043136A (en) | 2019-05-13 | 2019-05-13 | Locking device for bolt and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111043136A true CN111043136A (en) | 2020-04-21 |
Family
ID=70231666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910432540.XA Withdrawn CN111043136A (en) | 2019-05-13 | 2019-05-13 | Locking device for bolt and nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111043136A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB193532A (en) * | 1921-12-01 | 1923-03-01 | Alfred Edward Peacock | Improvements in or relating to lock-nuts |
| GB664962A (en) * | 1948-06-07 | 1952-01-16 | Pierre Fernand Gilbert Chamoy | Locking nuts |
| GB1223069A (en) * | 1968-12-09 | 1971-02-17 | Shur Lok Corp | Improvements in fasteners |
| KR20150053071A (en) * | 2013-11-07 | 2015-05-15 | 광주환경공단 | Locking device for preventing loosening |
| CN207728709U (en) * | 2017-08-31 | 2018-08-14 | 浙江中通汽车零部件有限公司 | Clinch fastener assembling assembly |
| CN108869509A (en) * | 2018-09-03 | 2018-11-23 | 杨富云 | A kind of fastener locking method and its vibrationproof bolt |
| CN108953351A (en) * | 2018-09-15 | 2018-12-07 | 杨富云 | A kind of checknut fastener |
| CN210265453U (en) * | 2019-05-13 | 2020-04-07 | 杨富云 | Locking device for bolt and nut |
-
2019
- 2019-05-13 CN CN201910432540.XA patent/CN111043136A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB193532A (en) * | 1921-12-01 | 1923-03-01 | Alfred Edward Peacock | Improvements in or relating to lock-nuts |
| GB664962A (en) * | 1948-06-07 | 1952-01-16 | Pierre Fernand Gilbert Chamoy | Locking nuts |
| GB1223069A (en) * | 1968-12-09 | 1971-02-17 | Shur Lok Corp | Improvements in fasteners |
| KR20150053071A (en) * | 2013-11-07 | 2015-05-15 | 광주환경공단 | Locking device for preventing loosening |
| CN207728709U (en) * | 2017-08-31 | 2018-08-14 | 浙江中通汽车零部件有限公司 | Clinch fastener assembling assembly |
| CN108869509A (en) * | 2018-09-03 | 2018-11-23 | 杨富云 | A kind of fastener locking method and its vibrationproof bolt |
| CN108953351A (en) * | 2018-09-15 | 2018-12-07 | 杨富云 | A kind of checknut fastener |
| CN210265453U (en) * | 2019-05-13 | 2020-04-07 | 杨富云 | Locking device for bolt and nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200421 |
|
| WW01 | Invention patent application withdrawn after publication |