CN214617414U - Repeatedly usable's check bolt subassembly - Google Patents

Abstract

The utility model discloses a repeatedly usable's check bolt subassembly, including the screw, cover the packing ring on the screw rod of screw and with the screw rod threaded connection's of screw nut, seted up the draw-in groove on the screw rod of screw, be provided with in the hole of packing ring with draw-in groove sliding fit's spacing boss, seted up the ring channel on the terminal surface of packing ring, be provided with the elastic sleeve of ring channel block on the terminal surface of nut, the elastic sleeve pressure equipment is in the ring channel, make nut and packing ring form one and can rotate nevertheless unable detached disjunctor piece relatively. The utility model discloses with the packing ring cover back on the screw rod of screw, through the draw-in groove on the screw rod and the spacing boss cooperation on the packing ring, make screw and the unable relative rotation of packing ring, and behind the screw rod of nut twist screw, the elastic sleeve on the nut impresses in the ring channel on the packing ring, makes nut and packing ring form one and can rotate nevertheless unable detached disjunctor piece relatively, like this alright through the mutual preparation of leading of disjunctor piece and be used for reaching locking's purpose.

Description

Repeatedly usable's check bolt subassembly

Technical Field

The utility model relates to a repeatedly usable's check bolt subassembly belongs to fastener technical field.

Background

Bolts are a common fastener used in a wide variety of mechanical and electrical devices. For common application occasions, no strict requirements are made on the anti-loosening property of the bolt. However, in the fields of automobiles, aviation, aerospace, nuclear power plants and the like, many devices or parts work in a vibration environment for a long time, and the bolts and the nuts are easy to loosen, so that the normal work of the devices is affected, and even safety accidents can be caused.

Various self-locking nuts appear in the existing fastener industry, and the self-locking nut has the disadvantages of complex structure, high production cost, inconvenient installation and unsatisfactory anti-loosening effect. In addition, the working principle of the existing self-locking nut is that the thread or the thread pitch of the nut is twisted by external force so as to obtain extra pretightening force and achieve the purpose of locking. However, this method not only increases the screwing torque of the screw, but also cannot recover the twisted and damaged thread or thread pitch, so that the used nut or screw cannot be reused, and resources are wasted.

In order to solve the problems, the Chinese utility model patent with the patent number of 201721699037.3 and the invention creation name of 'an anti-loose self-locking fastener' discloses the following technical scheme: the screw comprises a screw head and a screw rod connected with the screw head into a whole, a right-handed thread is arranged on the rod part of the screw rod, the nut comprises a hexagonal sleeve and a thread sleeve connected with the hexagonal sleeve into a whole, a left-handed thread is arranged on the outer wall of the thread sleeve, a through hole is formed in the center of the nut, the screw rod penetrates through the through hole and extends into the end part of the thread sleeve, and the screw head and the hexagonal sleeve are movably connected together to enable the screw and the nut to form a connected piece which can rotate relatively but cannot be separated; the connecting piece is characterized in that a center hole is formed in the first connecting piece, a step hole is formed in the second connecting piece, a right-handed thread hole matched with a right-handed thread of the screw rod and a left-handed thread hole matched with a left-handed thread of the thread sleeve are formed in the step hole respectively, after the connecting piece penetrates out of the center hole of the first connecting piece, the right-handed thread of the screw rod is in threaded connection with the right-handed thread hole in the second connecting piece, and the left-handed thread of the thread sleeve is in threaded connection with the left-handed thread hole in the second connecting piece. However, when the right-handed thread of the screw rod is screwed into the right-handed thread hole of the second connecting piece, the left-handed thread of the thread sleeve needs to be screwed into the left-handed thread hole of the second connecting piece, so that an operator needs to simultaneously use two wrenches to respectively clockwise screw the screw and anticlockwise screw the nut, the operation difficulty is greatly increased, and particularly, it is more difficult to simultaneously operate the two wrenches in a narrow space.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a repeatedly usable's check bolt subassembly, not only can reach the locking purpose of locking, and do not cause any damage to each part moreover, screw, packing ring and nut still can continue to use, practice thrift the cost; and when the bolt is installed, the bolt and the nut can be separately and independently wrenched, the bolt is convenient to install in the same way as a conventional bolt, and the universality is greatly improved.

The utility model discloses a constitute like this: the utility model provides a repeatedly usable's check bolt subassembly, including the screw, the packing ring of cover on the screw rod of screw and with the screw rod threaded connection's of screw nut, seted up the draw-in groove on the screw rod of screw, be provided with in the hole of packing ring with draw-in groove sliding fit's spacing boss, seted up the ring channel on the terminal surface of packing ring, be provided with the elastic sleeve of ring channel block on the terminal surface of nut, the elastic sleeve pressure equipment is in the ring channel, make nut and packing ring form one and can rotate nevertheless unable detached disjunctor piece relatively.

Furthermore, the outer walls of the elastic sleeve and the annular groove are both arc-shaped, and elastic expansion joints are uniformly formed in the circumference of the elastic sleeve.

Further, the depth of the annular groove is larger than the height of the elastic sleeve.

Furthermore, the end face of the inner hole of the gasket is provided with a guide conical ring.

Since the technical scheme is used, the utility model has the advantages of: the utility model discloses after cover the packing ring on the screw rod of screw, through the draw-in groove on the screw rod and the spacing boss cooperation on the packing ring, make screw and packing ring unable relative rotation, and after the screw rod of screw was twisted to the nut, the elastic sleeve on the nut is impressed in the ring channel on the packing ring, make nut and packing ring form one and can rotate but can't the disjunctor piece relatively, in this way can be used for reaching locking purpose through the mutual traction of disjunctor piece, not only convenient assembling, and do not cause any damage to screw, packing ring and nut after using, each part still can continue to use, save cost; meanwhile, the screw and the nut can be separately and independently screwed, so that the installation is convenient, the working efficiency can be improved, and the universality is greatly improved. Therefore, the utility model discloses locking is effectual, simple structure moreover, convenient to use, low in manufacturing cost, the mass production of being convenient for.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of a schematic of the construction of the gasket;

FIG. 3 is a top view of a schematic of the structure of the gasket;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

fig. 5 is a sectional view showing a structural view of the nut.

Description of reference numerals: 1-screw, 2-nut, 3-gasket, 4-neck, 5-spacing boss, 6-ring groove, 7-guiding conical ring, 8-elastic sleeve, 9-elastic expansion joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail with reference to the accompanying drawings and examples.

The embodiment of the utility model provides a: as shown in fig. 1-5, the utility model discloses a repeatedly usable's lockbolt subassembly, including screw 1, the cover packing ring 3 on screw 1's the screw rod and with screw 1's screw rod threaded connection's nut 2, draw-in groove 4 has been seted up on screw 1's the screw rod, be provided with in packing ring 3's hole with draw-in groove 4 sliding fit's spacing boss 5, ring channel 6 has been seted up on packing ring 3's terminal surface, be provided with the elastic sleeve 8 of ring channel 6 block on nut 2's terminal surface, elastic sleeve 8 pressure equipment is in ring channel 6, make nut 2 and packing ring 3 form one and can rotate nevertheless unable detached disjunctor spare relatively. The outer walls of the elastic sleeve 8 and the annular groove 6 are both arc-shaped, and elastic expansion joints 9 are uniformly arranged on the circumference of the elastic sleeve 8. The depth of the annular groove 6 is greater than the height of the elastic sleeve 8. And the end surface of an inner hole of the gasket 3 is provided with a guide conical ring 7.

The utility model discloses a theory of operation: firstly, after a gasket 3 is sleeved on a screw rod of a screw 1, the screw 1 and the gasket 3 cannot relatively rotate through the matching of a clamping groove 4 on the screw rod and a limiting boss 5 on the gasket 3, then the nut 2 is screwed into the screw rod of the screw 1, and in the screwing process, an elastic sleeve 8 on the nut 2 is pressed into an annular groove 6 on the gasket 3, so that the nut 2 and the gasket 3 form a connected piece which can relatively rotate but cannot be separated, therefore, the anti-loose and locking purposes can be achieved through the mutual traction of the connected piece, the assembly is convenient, the nut 2 is reversely screwed, the elastic sleeve 8 on the nut 2 can be withdrawn from the annular groove 6 on the gasket 3, the used screw 1, the gasket 3 and the nut 2 are not damaged, and all parts can still be continuously used, so that the cost is saved; meanwhile, the screw 1 and the nut 2 can be separately and independently screwed, so that the installation is convenient, the working efficiency can be improved, and the universality is greatly improved. Therefore, the utility model discloses locking is effectual, simple structure moreover, convenient to use, low in manufacturing cost, the mass production of being convenient for.

Claims (4)

1. The utility model provides a repeatedly usable's lockbolt subassembly, includes screw (1), cover packing ring (3) on the screw rod of screw (1) and with screw rod threaded connection's of screw (1) nut (2), its characterized in that: the screw rod of screw (1) is provided with clamping groove (4), the inner hole of washer (3) is provided with spacing boss (5) which is in sliding fit with clamping groove (4), the end face of washer (3) is provided with annular groove (6), the end face of nut (2) is provided with elastic sleeve (8) which is clamped by annular groove (6), elastic sleeve (8) is pressed in annular groove (6), so that nut (2) and washer (3) form a connected piece which can rotate relatively but can not be separated.

2. The reusable lockbolt assembly of claim 1, wherein: the outer walls of the elastic sleeve (8) and the annular groove (6) are both arc-shaped, and elastic expansion joints (9) are uniformly formed in the circumference of the elastic sleeve (8).

3. The reusable lockbolt assembly of claim 1, wherein: the depth of the annular groove (6) is greater than the height of the elastic sleeve (8).

4. The reusable lockbolt assembly of claim 1, wherein: and the end surface of an inner hole of the gasket (3) is provided with a guide conical ring (7).

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