CN217401397U

CN217401397U - Anti-drop's stud

Info

Publication number: CN217401397U
Application number: CN202221200853.6U
Authority: CN
Inventors: 刘海波
Original assignee: Ningbo Juji Auto Parts Co ltd
Current assignee: Ningbo Juji Auto Parts Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-09-09
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses an anti-drop's stud, including bolt main part and swivel nut, the bolt main part has seted up the cavity including short double-screw bolt, smooth section and long-screw bolt between short double-screw bolt and the smooth section, and table wall screw thread closes soon in the cavity and is connected with the lift post, and lift socle portion fixed mounting has the awl seat. In this application, after accomplishing the location of multiunit connecting piece through the bolt main part, insert the screwdriver in the cavity and combine the card line with combining from the top, the screwdriver drives the rotation of lift post, the outer table wall of lift post and the interior table wall screw-thread fit of short double-screw bolt drive awl seat and move down, the outer table wall of awl seat cooperatees with the hypotenuse and drives multiunit sliding seat toward the outside expansion, multiunit sliding seat after the expansion can closely laminate at the interior table wall of connecting piece, and provide great frictional force and restrict the axial excursion of bolt main part, and then improved stud's anti-drop effect.

Description

Anti-drop's stud

Technical Field

The utility model relates to a fastener technical field especially relates to an anti-drop's stud.

Background

Studs, also known as studs or studs. The double-head bolt is used for connecting a fixed link function of machinery, both ends of the double-head bolt are provided with threads, and a screw rod in the middle of the double-head bolt is thick and thin. The method is generally used for mining machinery, bridges, automobiles, motorcycles, boiler steel structures, tower cranes, large-span steel structures and large buildings.

The method that stud used is to pass long double-screw bolt one end and treats perforation on the connecting piece and close with the inside screw of bottom connecting piece soon of multiunit, close the swivel nut soon to short double-screw bolt on the top at last, until the top of swivel nut pressfitting at the connecting piece of top layer, fixed connection between the multiunit connecting piece is realized to this, can discover at the concrete use of stud, the stud of connection on multiunit connecting piece receives the vibration and takes place the skew easily, lead to stud to appear becoming flexible even directly breaking away from, thereby reduced the stability that stud used.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: in order to solve the problems, a drop-proof stud bolt is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an anti-drop's stud, including bolt main part and swivel nut, the bolt main part is including short double-screw bolt, smooth section and long double-screw bolt, the cavity has been seted up between short double-screw bolt and the smooth section, table wall screw thread closes soon in the cavity and is connected with the lift post, lift toe portion fixed mounting has the awl seat, table wall sliding connection has the movable seat that the multiunit is the annular and distributes in the smooth section, table wall all is provided with the hypotenuse with awl seat sliding fit in the movable seat, be provided with the elastic component who is used for resetting fast between the multiunit movable seat.

Preferably, the elastic plug is abutted to the top of the lifting column, the outer surface wall of the elastic plug is tightly attached to the inner surface wall of the short stud, and the top of the elastic plug is higher than that of the short stud.

Preferably, the top of the lifting column is provided with a combination clamping grain.

Preferably, elastic cushion layers are fixedly mounted on the outer surface walls of the arc-shaped ends of the movable seats.

Preferably, the outer surface walls of the multiple groups of movable seats and the outer surface wall of the arc-shaped end of the smooth section are located on the same horizontal plane.

Preferably, the elastic component comprises a spring ring, one side of the multiple groups of movable seats far away from the conical seat is provided with a notch, and the multiple groups of notches are simultaneously sleeved on the outer surface wall of the spring ring.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

in the application, after the positioning of a plurality of groups of connecting pieces is completed through the bolt main body, a screwdriver is inserted into the cavity from the top and is combined with the combined clamping grains, the screwdriver drives the lifting column to rotate, the outer surface wall of the lifting column is in threaded fit with the inner surface wall of the short stud to drive the conical seat to move downwards, the outer surface wall of the conical seat is matched with the inclined edge to drive a plurality of groups of movable seats to expand outwards, the plurality of groups of expanded movable seats can be tightly attached to the inner surface wall of the connecting piece and provide larger friction force to limit the axial offset of the bolt main body, so that the anti-falling effect of the stud is improved, meanwhile, the annular spring ring can be stretched in the process that the plurality of groups of movable seats expand outwards, when the bolt main body needs to be disassembled later, the screwdriver drives the lifting column to rotate reversely, and after the movable seats lose the constraint force from the conical seat, the spring ring can drive the movable seats to reset rapidly through self elasticity, the use effect of the bolt main body is improved.

Drawings

Fig. 1 shows a schematic overall structure diagram provided according to an embodiment of the present invention;

FIG. 2 illustrates a schematic structural view of a spring coil provided in accordance with an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a lifting column provided according to an embodiment of the present invention;

fig. 4 shows a schematic structural diagram of a movable seat provided in accordance with an embodiment of the present invention.

Illustration of the drawings:

1. a bolt body; 101. a short stud; 102. a smooth section; 103. a long stud; 2. a movable seat; 3. a spring ring; 4. a threaded sleeve; 5. an elastic plug; 6. a conical seat; 7. a lifting column; 8. a cavity; 9. combining the clamping lines; 10. a beveled edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides an anti-drop's stud, including bolt main part 1 and swivel nut 4, bolt main part 1 is including short double-screw bolt 101, smooth section 102 and long double-screw bolt 103, cavity 8 has been seted up between short double-screw bolt 101 and the smooth section 102, table wall screw thread closes soon in the cavity 8 and is connected with lift post 7, 7 bottom fixed mounting of lift post have awl seat 6, table wall sliding connection has the multiunit to be the sliding seat 2 that the annular distributes in the smooth section 102, the table wall all is provided with the hypotenuse 10 with 6 sliding fit of awl seat in the sliding seat 2, be provided with the elastic component who is used for resetting fast between the multiunit sliding seat 2.

After bolt main part 1 accomplished the location of multiunit connecting piece, insert the screwdriver in cavity 8 and with combining the card line 9 combination from the top, the screwdriver drives the rotation of lift post 7, the outer table wall of lift post 7 cooperatees with short double-screw bolt 101 and the interior table wall screw-thread fit of smooth section 102 and drives awl seat 6 and move down, the outer table wall of awl seat 6 cooperatees with hypotenuse 10 and drives multiunit sliding seat 2 toward the outside expansion, multiunit sliding seat 2 after the expansion can closely laminate the interior table wall at the connecting piece, and provide great frictional force and restrict the axial excursion of bolt main part 1, and then improved stud's anti-drop effect.

Specifically, as shown in fig. 3, the top of the lifting column 7 abuts against the elastic plug 5, the outer surface wall of the elastic plug 5 is tightly attached to the inner surface wall of the short stud 101, the top of the elastic plug 5 is higher than the short stud 101, the elastic plug 5 is in interference fit with the inner surface wall of the short stud 101 to ensure the stability of the lifting column 7, meanwhile, the part extending out of the top can facilitate subsequent extraction, the top of the lifting column 7 is provided with a combination clamping line 9, and the combination clamping line 9 is preferably a cross groove path so as to be combined with an external screwdriver.

Specifically, as shown in fig. 2 and 4, elastic cushion layers are fixedly mounted on the outer surface walls of the arc-shaped ends of the multiple groups of movable seats 2, the elastic cushion layers are used for ensuring the combination effect of the movable seats 2 and the inner surface wall of the external connecting piece, namely, ensuring sufficient friction force, and the outer surface walls of the multiple groups of movable seats 2 and the outer surface walls of the arc-shaped ends of the smooth sections 102 are located on the same horizontal plane, so that the penetration of the preamble of the bolt body 1 is not affected.

Specifically, as shown in fig. 1 and fig. 2, elastic component is including spring coil 3, one side that awl seat 6 was kept away from to multiunit sliding seat 2 has all been seted up jaggedly, the multiunit breach cup joints simultaneously at 3 outer table walls of spring coil, at 2 toward outside expansion in-process of multiunit sliding seat, can tensile ring spring coil 3, when follow-up bolt main part 1 is torn open to needs, the screwdriver drives lift post 7 antiport, after sliding seat 2 lost the confining force that comes from awl seat 6, 3 accessible self elasticity of spring coil drive sliding seat 2 resets fast, bolt main part 1's result of use has been improved.

To sum up, after the positioning of the multiple sets of connecting pieces is completed through the bolt main body 1, the screwdriver is inserted into the cavity 8 from the top and combined with the combining snap-thread 9, the screwdriver drives the lifting column 7 to rotate, the outer surface wall of the lifting column 7 is in threaded fit with the short stud 101 and the inner surface wall of the smooth section 102 to drive the conical seat 6 to move downwards, the outer surface wall of the conical seat 6 is matched with the bevel edge 10 to drive the multiple sets of movable seats 2 to expand outwards, the multiple sets of expanded movable seats 2 can be tightly attached to the inner surface wall of the connecting piece, and a large friction force is provided to limit the axial offset of the bolt main body 1, so that the anti-falling effect of the stud bolt is improved, meanwhile, in the process of expanding the multiple sets of movable seats 2 outwards, the annular spring ring 3 can be stretched, when the bolt main body 1 needs to be dismounted later, the screwdriver drives the lifting column 7 to rotate reversely, and after the movable seats 2 lose the restraining force from the conical seat 6, spring ring 3 accessible self elasticity drives sliding seat 2 and resets fast, has improved the result of use of bolt main part 1.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an anti-drop's stud, including bolt main part (1) and swivel nut (4), a serial communication port, bolt main part (1) is including short double-screw bolt (101), smooth section (102) and long double-screw bolt (103), cavity (8) have been seted up between short double-screw bolt (101) and smooth section (102), table wall screw thread closes soon in cavity (8) and is connected with lift post (7), lift post (7) bottom fixed mounting has awl seat (6), table wall sliding connection has the multiunit to be movable seat (2) that the annular distributes in smooth section (102), table wall all is provided with in movable seat (2) and bores seat (6) sliding fit's hypotenuse (10), be provided with the elastic component who is used for quick reset between multiunit movable seat (2).

2. The anti-drop stud bolt according to claim 1, wherein the elastic plug (5) abuts against the top of the lifting column (7), the outer surface wall of the elastic plug (5) is tightly attached to the inner surface wall of the short stud (101), and the top of the elastic plug (5) is higher than the short stud (101).

3. An anti-drop stud bolt according to claim 1, characterised in that the top of the lifting column (7) is provided with a combination locking thread (9).

4. The anti-drop stud bolt according to claim 1, characterized in that the outer surface walls of the arc-shaped ends of the multiple groups of movable seats (2) are fixedly provided with elastic cushion layers.

5. The anti-drop stud bolt of claim 1, characterized in that, the outer surface walls of the movable bases (2) and the outer surface walls of the arc-shaped ends of the smooth sections (102) are all located on the same horizontal plane.

6. The anti-drop stud bolt as claimed in claim 1, wherein the elastic assembly comprises a spring ring (3), a plurality of groups of movable seats (2) are provided with notches at the sides far away from the conical seat (6), and the plurality of groups of notches are sleeved on the outer surface wall of the spring ring (3) at the same time.