CN201170248Y - Screw thread locking apparatus - Google Patents

Screw thread locking apparatus Download PDF

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Publication number
CN201170248Y
CN201170248Y CNU2008200328092U CN200820032809U CN201170248Y CN 201170248 Y CN201170248 Y CN 201170248Y CN U2008200328092 U CNU2008200328092 U CN U2008200328092U CN 200820032809 U CN200820032809 U CN 200820032809U CN 201170248 Y CN201170248 Y CN 201170248Y
Authority
CN
China
Prior art keywords
lockhole
nut
threaded
groove
bolt
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.)
Expired - Lifetime
Application number
CNU2008200328092U
Other languages
Chinese (zh)
Inventor
汪立平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Hengli Hydraulic Co Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNU2008200328092U priority Critical patent/CN201170248Y/en
Application granted granted Critical
Publication of CN201170248Y publication Critical patent/CN201170248Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a threaded locking device capable of locking up a nut tightly on a bolt, comprising a threaded segment and a nut of a bolt, wherein, the threaded segment is provided with a circular groove; at least one radial lockhole corresponding with the position of the groove is arranged in the nut; a lockpiece embedded in the groove is arranged in the lockhole, wherein, at least part of the lockpiece is a stud and the lockhole is a threaded hole; the utility model also comprises a steel ball which is pressed tightly by the lockpiece. The threaded locking device is capable of maintaining perfect locking effect in repeated use under a variety of adverse conditions, and is especially applicable to be used to fasten components of large-scale machines with great impact force, high vibration frequency, high security requirements and requiring regular demolition.

Description

A kind of screw-threaded coupling device
Technical field
The utility model relates to a kind of screw-threaded coupling device that nut is locked on bolt.
Background technique
The fastening piece of a lot of machinery equipments adopts threaded connector fastening, and the fastening deficiency of threaded connector is to be used for often being in the machinery equipment of vibrations working state, and threaded connector is prone to the phenomenon that gets loose.Existing anti-loose threaded fastener kind at this problem is a lot, and their each have their own action range simultaneously also all have certain narrow limitation, and the anti-loose effect that has is limited, the complex process that has, and what have can not use etc. repeatedly.Along with the development of society, the manufacturing precision of machinery equipment is more and more higher, and is also more and more tighter to safety requirement, and existing anti-loose threaded fastener can not be satisfied the demand fully.
Summary of the invention
The technical problems to be solved in the utility model is: utilize latch fitting to stop the anti-loose threaded fastener that self rotates mutually between threaded fastener, be particularly suitable for that impact force is strong when operation, vibrations are frequent, safety requirement large-scale machine high, that need regular dismounting tightens parts and uses.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of screw-threaded coupling device, the thread section, the nut that comprise bolt, thread section is provided with annular groove, correspond on the nut at groove location place and be provided with a radially lockhole at least, be provided with the latch fitting that embeds groove in the lockhole, described latch fitting to small part is a double-screw bolt, and lockhole is a tapped hole, also comprise a steel ball, steel ball is compressed by latch fitting.
The beneficial effects of the utility model are to use repeatedly still can remain intact locking effect under various mal-conditions.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the sectional drawing of Fig. 1.
Fig. 3 is the structural representation of another example of the present utility model.
Fig. 4 is the sectional drawing of Fig. 3.
Among the figure: 1, thread section, 2, nut, 3, annular groove, 4, lockhole, 5, steel ball, 6, latch fitting.
Embodiment
Embodiment 1: as shown in Figures 1 and 2, when the thread section 1 of external thread piece bolt and inner thread piece nut 2 are fastening, after the thread section 1 that is provided with annular groove 3 screws tight with the nut 2 that is provided with lockhole 4, wherein the position of lockhole 4 is corresponding with the position of annular groove 3, and nut 2 is provided with a radially lockhole 4 at least in addition.Then, the size of packing at lockhole 4 places and groove 3, lockhole 4 corresponding steel balls 5, latch fitting 6 is threaded with the lockhole 4 of nut 2, wherein latch fitting 6 to small part is a double-screw bolt, be spirally connected until steel ball 5 is compressed, steel ball can be because of external force effects such as vibrations, impacts and is dropped out, and thread section 1 and nut 2 can not rotate mutually, reach fastening purpose.When needing dismounting, the latch fitting 6 of back-outing can take out steel ball 5 and then rotation dismounting screw.
Embodiment 2: as shown in Figures 3 and 4, when the thread section 1 of external thread piece bolt and inner thread piece nut 2 are fastening, after the thread section 1 that is provided with annular groove 3 screws tight with the nut 2 that is provided with lockhole 4, wherein the position of lockhole 4 is corresponding with the position of annular groove 3, and nut 2 is provided with a radially lockhole 4 at least in addition.To have externally threaded latch fitting 6 and be threaded, until screwing tight with the lockhole 4 of nut 2.Owing to latch fitting 6 does not drop out because of external force effects such as vibrations, impacts, thread section 1 and nut 2 can not rotate mutually, reach fastening purpose.When needing dismounting, spiral shell goes out latch fitting 6, and then rotation dismounting screw.

Claims (3)

1. screw-threaded coupling device, the thread section (1), the nut (2) that comprise bolt, it is characterized in that: described thread section (1) locates to be provided with annular groove (3), correspond on the nut (2) of groove (3) position and be provided with a radially lockhole (4) at least, be provided with the latch fitting (6) that embeds groove (3) in the described lockhole (4).
2. screw-threaded coupling device as claimed in claim 1 is characterized in that: described latch fitting (6) to small part is a double-screw bolt, and described lockhole (4) is a tapped hole.
3. screw-threaded coupling device as claimed in claim 2 is characterized in that: also comprise a steel ball (5), by described latch fitting (6) described steel ball (5) is pressed in the groove (3).
CNU2008200328092U 2008-03-07 2008-03-07 Screw thread locking apparatus Expired - Lifetime CN201170248Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200328092U CN201170248Y (en) 2008-03-07 2008-03-07 Screw thread locking apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200328092U CN201170248Y (en) 2008-03-07 2008-03-07 Screw thread locking apparatus

Publications (1)

Publication Number Publication Date
CN201170248Y true CN201170248Y (en) 2008-12-24

Family

ID=40209301

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200328092U Expired - Lifetime CN201170248Y (en) 2008-03-07 2008-03-07 Screw thread locking apparatus

Country Status (1)

Country Link
CN (1) CN201170248Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111946718A (en) * 2020-08-21 2020-11-17 三马紧固件(浙江)股份有限公司 Reinforced anti-loose lock nut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111946718A (en) * 2020-08-21 2020-11-17 三马紧固件(浙江)股份有限公司 Reinforced anti-loose lock nut

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Jiangsu Hengli Highpressure Oil Cylinder Co., Ltd.

Assignor: Wang Liping

Contract record no.: 2010320000055

Denomination of utility model: Screw thread locking apparatus

Granted publication date: 20081224

License type: Exclusive License

Record date: 20100220

ASS Succession or assignment of patent right

Owner name: JIANGSU HENGLI HIGH PRESSURE CYLINDER CO., LTD.

Free format text: FORMER OWNER: WANG LIPING

Effective date: 20100524

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 213169 JIANGSU HENGLI HIGH PRESSURE CYLINDER CO., LTD.,XUEYAN INDUSTRY CONCENTRATING ZONE, WUJIN DISTRICT, CHANGZHOU CITY, JIANGSU PROVINCE TO: 213169 XUEYAN INDUSTRIAL ZONE, WUJIN DISTRICT, CHANGZHOU CITY, JIANGSU PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20100524

Address after: 213169, Jiangsu, Changzhou province Wujin District snow weir industrial concentration area

Patentee after: Jiangsu Hengli Highpressure Oil Cylinder Co., Ltd.

Address before: District Jiangsu Hengli high cylinder Co. Ltd. Wujin Xueyan industrial 213169 Jiangsu city of Changzhou Province

Patentee before: Wang Liping

C56 Change in the name or address of the patentee

Owner name: JIANGSU HENGLI HIGH PRESSURE OIL CYLINDER CO., LTD

Free format text: FORMER NAME: JIANGSU HENGLI HIGHPRESSURE OIL CYLINDER CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 213169, Jiangsu, Changzhou province Wujin District snow weir industrial concentration area

Patentee after: Jiangsu Hengli High Pressure Oil Cylinder Co., Ltd.

Address before: 213169, Jiangsu, Changzhou province Wujin District snow weir industrial concentration area

Patentee before: Jiangsu Hengli Highpressure Oil Cylinder Co., Ltd.

C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99

Patentee after: JIANGSU HENGLI HYDRAULIC CO., LTD.

Address before: 213169, Jiangsu, Changzhou province Wujin District snow weir industrial concentration area

Patentee before: Jiangsu Hengli High Pressure Oil Cylinder Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20081224