阅读说明：本技术 一种锁紧装置及具有该锁紧装置的螺栓 (Locking device and bolt with same ) 是由 马瑶 孔羽姝 罗添元 赵方舟 齐志芳 于 2021-11-17 设计创作，主要内容包括：本发明公开了一种锁紧装置及具有该锁紧装置的螺栓,属于紧固件防松技术领域,本发明公开的锁紧装置包括：螺套、至少一个能够装设在螺套内的锁片、盖合在螺套上并将锁片封装在螺套内的上盖、以及以转动地形式连接在上盖上的驱动器,驱动器具有驱动杆,用于驱动锁片伸展或收缩,螺套内壁形成有耦合部,用于与锁片展开时卡合；本发明公开的螺栓包括：螺杆和上述锁紧装置；螺杆的外螺纹与螺套的外螺纹旋向相反,螺杆顶端具有螺帽,螺帽开设有与锁片数量匹配的旋转槽,驱动杆能够贯穿旋转槽,该螺栓通过旋转槽与驱动杆配合,锁片与耦合部卡合状态下,锁紧装置与螺栓自锁,避免螺栓松脱,本发明具有螺纹连接可靠性高、防松效果好的有益效果。(The invention discloses a locking device and a bolt with the same, belonging to the technical field of fastener looseness prevention, and the locking device disclosed by the invention comprises: the lock comprises a screw sleeve, at least one locking plate which can be arranged in the screw sleeve, an upper cover which covers the screw sleeve and encapsulates the locking plate in the screw sleeve, and a driver which is connected with the upper cover in a rotating mode, wherein the driver is provided with a driving rod for driving the locking plate to extend or contract, and a coupling part is formed on the inner wall of the screw sleeve and is used for being clamped with the locking plate when the locking plate is unfolded; the bolt disclosed by the invention comprises: a screw and the locking device; the external thread of the screw is opposite to the external thread of the screw sleeve in rotation direction, the nut is arranged at the top end of the screw and provided with the rotating grooves matched with the number of the locking plates, the driving rod can penetrate through the rotating grooves, the bolt is matched with the driving rod through the rotating grooves, and the locking device is self-locked with the bolt under the clamping state of the locking plates and the coupling parts, so that the bolt is prevented from loosening.)

1. A locking device, comprising:

swivel nut (10), at least one can be installed locking plate (30), the lid in swivel nut (10) close on swivel nut (10) and will locking plate (30) encapsulation upper cover (20) in swivel nut (10) and connect with form with rotating driver (40) on upper cover (20), driver (40) have actuating lever (43), are used for the drive locking plate (30) extend or shrink, wherein, swivel nut (10) inner wall is formed with coupling part, be used for with block when locking plate (30) expand.

2. A locking device according to claim 1, characterised in that;

the coupling part is a convex block (11), and the inner wall of the screw sleeve (10) forms the convex block (11) which is matched with the number of the locking plates (30) and protrudes out of the inner wall of the screw sleeve (10).

3. A locking device according to claim 1 or 2, wherein;

the lock plate (30) is constructed in a foldable link structure, and the lock plate (30) is unfolded in an involute form by being driven by the driving rod (43).

4. A locking device according to claim 3, characterised in that;

the locking plate (30) comprises a first sheet body (31) and a second sheet body (32) which is rotationally connected with the first sheet body (31);

the second sheet body (32) is provided with a locking groove (321) which is clamped with the coupling part relative to the inner wall side of the threaded sleeve (10), and the upper part of the second sheet body (32) is rotatably connected with the upper cover (20) through a connecting column (322);

the end, far away from the second sheet body (32), of the first sheet body (31) is provided with a lock hole (311) into which the driving rod (43) can be inserted.

5. A locking device according to claim 4, characterised in that;

the locking plate (30) comprises three locking plates, and the three locking plates (30) can be synchronously unfolded under the driving of the driving rod (43).

6. A locking device according to claim 1, characterised in that;

the driver (40) comprises a knob (41) which is rotationally connected with the upper cover (20) and a lock cylinder (42) which is arranged inside the upper cover (20);

the lock cylinder (42) is fixedly connected with the driving rods (43) the number of which is matched with that of the lock plates (30);

the lower surface of the knob (41) can be clamped or separated with the lock cylinder (42) through a clamping structure, and when the knob (41) is clamped with the lock cylinder (42), the lock cylinder (42) can rotate synchronously with the knob (41).

7. A locking device according to claim 6, characterised in that;

the buckling structure comprises a tooth part (411) formed on the lower surface of the knob (41) and a tooth groove (421) formed on the lock cylinder (42), and the tooth part (411) can be clamped with or separated from the tooth groove (421).

8. A locking device according to claim 1, characterised in that;

the outer wall of the screw sleeve (10) is provided with an external thread for being in threaded connection with a base material, and a convex edge (12) is formed at the bottom of the screw sleeve (10) and used for supporting the locking plate (30).

9. A bolt comprising a threaded shank (50) for threadedly connecting two substrates and a locking device according to any one of claims 1 to 8;

the external screw thread of screw rod (50) with the external screw thread of swivel nut (10) is turned to the opposite direction, screw rod (50) top has nut (51), nut (51) seted up with rotatory groove (52) that locking plate (30) quantity matches, actuating lever (43) can run through rotatory groove (52).

10. A bolt according to claim 9, wherein;

the upper surface of the screw cap (51) is provided with a cross groove or an inner hexagonal groove for driving the screw rod (50) to rotate.

Technical Field

The invention relates to the technical field of looseness prevention of fasteners, in particular to a locking device and a bolt with the locking device.

Background

The threaded connection is a detachable fixed connection structure which is widely used, has the characteristics of simple structure, reliable connection and convenient assembly and disassembly, but is limited by the existing threaded sleeve structure on one hand, and the connection structure is also influenced by the self vibration of a connector on the other hand, so that the threaded connection has a loosening phenomenon, and the loosening of a fastener seriously threatens the safety of mechanical equipment;

among the prior art, designed multiple anti loosening structure in engineering field, what have certain characteristics and extensive application degree is the anti loosening structure of packing ring form, and its principle lies in increasing coefficient of friction through the roughness that changes the terminal surface, and is common to have: flat washers, spring washers, serrated washers, etc., each of which has disadvantages, and related studies have also found that flat washers reduce the loose corners of threaded connections and are not an effective anti-loosening structure; the embedding action of the edge of the spring washer generates scratches on the end surface and the surface of the pressed piece, so that damage is caused; the serrated washer causes damage to the contact surface and may lose the anti-loosening effect due to abrasion;

therefore, in view of the above problems, it is highly desirable to develop a locking device and a bolt having the same.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a locking device and a bolt with the locking device.

In order to achieve the above purpose, the invention provides the following technical scheme:

the invention discloses a locking device, comprising:

the swivel nut, at least one can be installed locking plate, the lid in the swivel nut close on the swivel nut and will the locking plate encapsulation is in upper cover in the swivel nut and connect with form of rotation the driver on the upper cover, the driver has the actuating lever, is used for the drive the locking plate extends or contracts, wherein, the swivel nut inner wall is formed with coupling portion, be used for with block when the locking plate expandes.

Furthermore, the coupling part is a bump, and the bump which is matched with the locking pieces in quantity and protrudes out of the inner wall of the screw sleeve is formed on the inner wall of the screw sleeve.

Further, the locking plate is constructed in a foldable connecting rod structure, and the locking plate is unfolded in an involute form under the driving of the driving rod.

Further, the locking plate comprises a first plate body and a second plate body which is rotatably connected with the first plate body;

the second sheet body is provided with a locking groove clamped with the coupling part relative to the inner wall side of the threaded sleeve, and the upper part of the second sheet body is rotationally connected with the upper cover through a connecting column;

the end, far away from the second sheet body, of the first sheet body is provided with a lock hole into which the driving rod can be inserted.

Furthermore, the locking plate includes three, and is three the locking plate can be in under the drive of actuating lever is synchronous to be unfolded.

Further, the driver comprises a knob which is rotationally connected with the upper cover and a lock cylinder which is arranged inside the upper cover;

the lock cylinder is fixedly connected with the driving rods matched with the lock plates in number;

the lower surface of the knob can be clamped or separated from the lock cylinder through a clamping structure, and when the knob is clamped with the lock cylinder, the lock cylinder can synchronously rotate with the knob.

Further, the snap structure comprises a tooth part formed on the lower surface of the knob and a tooth groove formed on the lock cylinder, and the tooth part can be clamped with or separated from the tooth groove.

Furthermore, the swivel nut outer wall has the external screw thread for with substrate threaded connection, the swivel nut bottom is formed with protruding edge, is used for the bearing the locking plate.

The invention discloses a bolt which comprises a screw rod and a locking device, wherein the screw rod is used for connecting two base materials in a threaded manner;

the external screw thread of screw rod with the external screw thread of swivel nut is to opposite, the screw rod top has the nut, the nut seted up with the rotatory groove that locking plate quantity matches, the actuating lever can run through rotatory groove.

Furthermore, a cross groove or an inner hexagonal groove is formed in the upper surface of the screw cap and used for driving the screw to rotate.

In the technical scheme, the locking device and the bolt with the locking device provided by the invention have the beneficial effects that:

1) the threaded sleeve is in threaded connection with the base material A through left-handed external threads, the bolt is in threaded connection with the base material A and the base material B through right-handed threads, the threaded sleeve and the bolt are in self-tapping threaded fit connection with the base material, the screwing directions are opposite, compared with a single bolt threaded connection structure and the matched gasket anti-loosening effect in the prior art, the anti-loosening effect caused by relative rotation of the bolt and the base material can be effectively prevented, and meanwhile, the problems that the surface of the base material is damaged by the gasket and the anti-loosening performance is reduced are solved;

2) the screw sleeve is internally provided with a convex block, the convex block is clamped with the locking plate, the self-locking function between the bolt and the screw sleeve is realized through the rotation limiting action, the reverse stroke control is carried out on the threaded connection action of the bolt, and the loosening effect caused by the relative rotation of the bolt and the base body is further realized;

3) the commonality is strong, especially connects to the plate substrate that has under certain harmful vibration effect and has more effectual locking effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is an exploded view of a locking device and bolt arrangement of the present disclosure;

FIG. 2 is a top view of the locking device insert of the present disclosure;

FIG. 3 is an isometric view of the upper cover of the locking device disclosed herein;

FIG. 4 is an isometric view of a locking device locking tab of the present disclosure;

FIG. 5 is a front view of the locking device and bolt of the present disclosure in an assembled state;

FIG. 6 is a front full sectional view of the locking device and bolt of the present disclosure in an assembled state;

FIG. 7 is a structural diagram of an initial locking plate of the locking device according to the present invention;

FIG. 8 is a structural diagram illustrating a locking state of a locking plate of the locking device disclosed by the present invention;

fig. 9 is a schematic view of the locking device and bolt of the present disclosure in a state of being attached to a substrate.

Description of reference numerals:

10. a threaded sleeve; 11. a bump; 12. a convex edge;

20. an upper cover; 21. connecting holes;

30. a locking plate; 31. a first sheet body; 311. a lock hole; 32. a second sheet body; 321. a locking groove; 322. connecting columns;

40. a driver; 41. a knob; 411. a tooth portion; 42. a lock cylinder; 421. a tooth socket; 43. a drive rod;

50. a screw; 51. a nut; 52. a rotating trough.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1;

the invention provides a locking device, comprising:

the locking mechanism comprises a screw sleeve 10, at least one locking piece 30 capable of being installed in the screw sleeve 10, an upper cover 20 covering the screw sleeve 10 and packaging the locking piece 30 in the screw sleeve 10, and a driver 40 connected to the upper cover 20 in a rotating manner, wherein the driver 40 is provided with a driving rod 43 for driving the locking piece 30 to extend or contract, wherein a coupling part is formed on the inner wall of the screw sleeve 10 and used for being clamped with the locking piece 30 when being unfolded.

Specifically, in this structure, the swivel nut 10 is connected with the base material through external threads, the base material is the base material that possesses self-tapping type screw thread among the prior art, the swivel nut 10 is connected with the base material screw thread with the form of embedding base material, install the locking plate 30 in the swivel nut 10, preferably, the locking plate 30 includes threely, upper cover 20 and swivel nut 10 can be dismantled ground fixed connection, upper cover 20 and swivel nut 10 can adopt bonding among the prior art and realize dismantling ground fixed connection, of course, also can adopt other structures that can realize dismantling the connection among the prior art between upper cover 20 and the swivel nut 10, locking plate 30 passes through upper cover 20 encapsulation in the swivel nut 10, driver 40 and upper cover 20 swivelling joint, driver 40 is provided with actuating lever 43, three locking plate 30 can launch under the drive of actuating lever 43 in step.

When the locking mechanism is used, the driver 40 is rotated, the driving rod 43 drives the locking plate 30 to extend or contract, the inner wall of the thread insert 10 is provided with a coupling part, and the locking plate 30 can be clamped with the coupling part when being unfolded, so that the purpose of blocking the driving rod 43 from rotating is achieved;

as shown in fig. 2;

preferably, the coupling portion is a protrusion 11, and the inner wall of the screw sleeve 10 is formed with a number of protrusions 11 protruding from the inner wall of the screw sleeve 10 matching the number of the locking pieces 30.

Specifically, in this structure, the protrusion 11 extends obliquely toward the center of the screw sleeve 10, so as to cater for the lock plate 30 that is unfolded by the driving rod 43, and the lock plate 30 is engaged with the protrusion 11, that is, the side wall of the engagement side of the protrusion 11 and the lock plate 30 forms a V-shaped structure with an angle smaller than 90 ° with the inner wall of the screw sleeve 10, as shown in fig. 8, so that the lock plate 30 can be hooked on the protrusion 11 when unfolded;

as shown in fig. 4;

preferably, the locking piece 30 is constructed in a foldable link structure, and the locking piece 30 is unfolded in an involute form by the driving of the driving lever 43; preferably, the locking piece 30 comprises a first blade 31, a second blade 32 rotatably connected to the first blade 31; the second sheet body 32 is provided with a locking groove 321 which is clamped with the coupling part relative to the inner wall side of the thread sleeve 10, and the upper part of the second sheet body 32 is rotationally connected with the upper cover 20 through a connecting column 322; the end of the first sheet 31 away from the second sheet 32 has a lock hole 311 into which the driving rod 43 can be inserted.

Specifically, the first sheet body 31 of the locking plate 30 is rotatably connected with the second sheet body 32 through a shaft, so that the first sheet body 31 and the second sheet body 32 can be folded around the shaft, the second sheet body 32 is an arc-shaped sheet state structure protruding towards the inner wall of the turnbuckle 10, the outer wall of the second sheet body 32 is provided with a locking groove 321, as shown in fig. 3, the lower surface of the upper cover 20 is provided with a connecting hole 21, the upper part of the second sheet body 32 is fixedly connected with a connecting column 322, and the connecting column 322 is rotatably connected with the connecting hole 21;

in an assembled state, the driving rod 43 is inserted into the locking hole 311 of the first sheet body 31 to drive the first sheet body 31 to move, the second sheet body 32 can rotate around the connecting column 322, so that the locking plate 30 is unfolded, and the locking groove 321 of the second sheet body 32 is clamped with the lug 11;

as shown in fig. 1;

preferably, the actuator 40 comprises a knob 41 rotatably coupled to the upper cover 20, and a key cylinder 42 disposed inside the upper cover 20; the lock core 42 is fixedly connected with driving rods 43 matched with the lock plates 30 in number;

the lower surface of the knob 41 can be engaged with or disengaged from the key cylinder 42 by a snap structure, and when the knob 41 is engaged with the key cylinder 42, the key cylinder 42 can be rotated synchronously with the knob 41.

Specifically, referring to fig. 6, in this structure, driver 40 includes a knob 41, a key cylinder 42, and a driving rod 43;

the knob 41 is rotatably connected with the upper cover 20, the upper cover 20 is fixedly connected with the threaded sleeve 10, the knob 41 and the upper cover 20 can be installed on the upper cover 20 in a plugging manner, that is, after the knob 41 rotates, the lock cylinder 42 is driven to rotate synchronously, the drive rod 43 on the lock cylinder 42 drives the locking plate 30 to be clamped with the bump 11, and then the knob 41 can be removed, of course, according to the actual use requirement, the upper cover 20 can also package the body part of the knob 41, the lock cylinder 42 and the locking plate 30 together in the threaded sleeve 10, the upper cover 20 is provided with a through hole, the handle of the knob 41 is exposed out of the upper cover 20, the handle of the knob 41 is driven to drive the lock cylinder 42 to rotate, and the knob 41 and the lock cylinder 42 are retained in the threaded sleeve 10 as retention pieces;

the lock cylinder 42 and the driving rod 43 are arranged inside the screw sleeve 10, and are fixedly connected with the screw sleeve 10 through the upper cover 20 to package the lock cylinder 42 and the lock plate 30 in the screw sleeve 10, the driving rod 43 is fixedly connected to the lower surface of the lock cylinder 42 corresponding to the position of the lock hole 311, the upper surface of the lock cylinder 42 can be clamped or separated with the lower part of the knob 41 through a clamping structure, as shown in fig. 1, the clamping structure comprises a tooth part 411 formed on the lower surface of the knob 41 and a tooth groove 421 formed on the lock cylinder 42, and the tooth part 411 can be clamped or separated with the tooth groove 421;

as shown in fig. 2;

preferably, the outer wall of the screw sleeve 10 has an external thread for screw connection with the substrate, and a convex edge 12 is formed at the bottom of the screw sleeve 10 for supporting the locking piece 30.

Specifically, the outer wall of the screw sleeve 10 is provided with a left-handed external thread, the left-handed external thread is in threaded connection with the base materials, a convex edge 12 is formed at the bottom of the screw sleeve 10, and a through hole is formed in the middle of the convex edge 12, so that a bolt can penetrate through the through hole to be in threaded connection with the two base materials;

as shown in fig. 1;

the invention relates to a bolt, which comprises a screw rod 50 and the locking device, wherein the screw rod is in threaded connection with two base materials;

the external thread of the screw 50 is opposite to the external thread of the screw sleeve 10, the top end of the screw 50 is provided with a nut 51, the nut 51 is provided with a rotating groove 52 matched with the number of the locking pieces 30, and the driving rod 43 can penetrate through the rotating groove 52.

Specifically, the bolt in the structure comprises a screw 50 and the locking device, the screw 50 is anti-loose through the locking device, wherein the screw 50 is provided with a right-handed external thread, the screw 50 can also be a left-handed external thread, the thread insert 10 is a right-handed thread, and the external thread of the screw 50 and the external thread of the thread insert 10 have opposite rotation directions;

the top end of the screw 50 is integrally formed with a nut 51, the nut 51 has three arc-shaped elongated holes, the elongated holes are rotating slots 52, during assembly, the driving rod 43 of the driver 40 penetrates through the rotating slots 52 and is inserted into the locking hole 311 of the locking plate 30, so that the bolt is matched with the driving rod 43, when the locking plate 30 is engaged with the projection 11 of the threaded sleeve 10, the driving rod 43 is fixed in position, the screw 50 is prevented from rotating, the purpose of preventing the bolt from loosening is achieved, and the bolt is self-locked;

preferably, the upper surface of the nut 51 is provided with a cross groove or an inner hexagonal groove, in the structure, the screw 50 is driven to rotate through the cross groove or the inner hexagonal groove, so that the internal space of the threaded sleeve can be saved, the structure is compact, and the nut 51 can be a hexagonal nut according to the use requirement;

in the technical scheme, the invention provides the locking device and the bolt with the locking device;

the using method comprises the following steps:

referring to fig. 9, both the base material a and the base material B are provided with bottom holes in threaded connection with the bolts 50, and the upper surface of the base material a is provided with bottom holes in threaded connection with the thread inserts 10;

firstly, the threaded sleeve 10 is in threaded connection with a base material A;

secondly, referring to fig. 6, the lock plate 30 is placed in the threaded sleeve 10, the bolt 50 is sequentially screwed into the substrate a and the substrate B, the nut 51 of the bolt is placed above the lock plate 30, then the lock cylinder 42 is installed, the driving rod 43 on the lock cylinder 42 penetrates through the rotating groove 52 of the bolt and then is inserted into the lock hole 311, the upper cover 20 is assembled, the lock cylinder 42, the screw 50 and the lock plate 30 are packaged in the threaded sleeve 10, and the knob 41 rotatably connected with the upper cover 20 is clamped with the tooth groove 421 through the tooth part 411;

the working principle is as follows:

referring to fig. 7 and 8, fig. 7 is a schematic view illustrating an initial state of the locking plate 30, and fig. 8 is a schematic view illustrating a locking state of the locking plate 30;

referring to fig. 5, the toggle knob 41 rotates, the lock cylinder 42 drives the driving rod 43 to rotate synchronously with the knob 41, the driving rod 43 rotates and displaces in the locking groove 52 and drives the locking plate 30 to unfold, so that the locking plate 30 is engaged with the protrusion 11, after the locking plate 30 is engaged with the protrusion 11, the driving rod 43 is limited to rotate, the position of the driving rod 43 is fixed, and the driving rod 43 penetrates through the locking groove 52 of the bolt, so that the purpose of preventing the screw 50 from rotating and preventing the bolt from loosening is achieved;

has the advantages that:

1) the threaded sleeve is in threaded connection with the base material A through left-handed external threads, the bolt is in threaded connection with the base material A and the base material B through right-handed threads, the threaded sleeve and the bolt are in self-tapping threaded fit connection with the base material, the screwing directions are opposite, compared with a single bolt threaded connection structure and the matched gasket anti-loosening effect in the prior art, the anti-loosening effect caused by relative rotation of the bolt and the base material can be effectively prevented, and meanwhile, the problems that the surface of the base material is damaged by the gasket and the anti-loosening performance is reduced are solved;

2) the screw sleeve is internally provided with a convex block, the convex block is clamped with the locking plate, the self-locking function between the bolt and the screw sleeve is realized through the rotation limiting action, the reverse stroke control is carried out on the threaded connection action of the bolt, and the loosening effect caused by the relative rotation of the bolt and the base body is further realized;

3) the commonality is strong, especially connects to the plate substrate that has under certain harmful vibration effect and has more effectual locking effect.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.