CN214742629U

CN214742629U - Wear-resistant carbon steel inner hexagonal plug screw

Info

Publication number: CN214742629U
Application number: CN202120990423.8U
Authority: CN
Inventors: 潘长平
Original assignee: Wenzhou Yongjing Fastener Co ltd
Current assignee: Wenzhou Yongjing Fastener Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-16
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a wear-resisting formula carbon steel hexagon socket head cap screw, including hexagon socket head cap screw head and double-screw bolt, the inside of hexagon socket head cap screw head is provided with the hexagonal counter bore, the bottom of hexagon socket head cap screw head is provided with the double-screw bolt, the inside of double-screw bolt is provided with reinforced structure, reinforced structure includes screw hole, expansion groove, bell jar and reinforcement screw, the screw hole sets up on the inside axis of double-screw bolt. The utility model discloses a be provided with the screw hole, the expansion groove, bell jar and reinforcement screw, when reinforcement screw twists the screw hole completely, reinforcement screw's bottom can get into the inside of bell jar, because the bell jar is the taper setting, the diameter of bell jar bottom is less than reinforcement screw's diameter, the bell jar can be propped open to all around by reinforcement screw to through the setting in expansion groove, indirect control double-screw bolt's bottom is to expanding all around, consolidate and be connected with the object, thereby make carbon steel inner hexagonal end cap screw have the reinforcement function.

Description

Wear-resistant carbon steel inner hexagonal plug screw

Technical Field

The utility model relates to an interior hexagonal end cap screw technical field specifically is a wear and tear formula carbon steel interior hexagonal end cap screw.

Background

The carbon steel inner hexagonal plug screw is an inner hexagonal plug screw which is formed by processing carbon steel serving as a raw material, the plug screw has a plugging function, and the inner hexagonal plug screw is widely applied to the fields of hydraulic elements, automobile engines and the like, but the existing carbon steel inner hexagonal plug screw has many problems or defects:

when the traditional carbon steel inner hexagonal plug screw is in actual use and equipment runs, the screw is easy to shake, so that the screw falls off from the screw hole, and the fixing effect of the carbon steel inner hexagonal plug screw is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wear and tear formula carbon steel hexagon socket head cap screw to provide the not good problem of carbon steel hexagon socket head cap screw fixation effect in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wear-resisting formula carbon steel hexagon socket head cap screw, includes hexagon socket head cap screw head and double-screw bolt, the inside of hexagon socket head cap screw head is provided with the hexagonal counter bore, the bottom of hexagon socket head cap screw head is provided with the double-screw bolt, the inside of double-screw bolt is provided with reinforced structure, reinforced structure includes screw hole, expansion groove, bell jar and reinforcement screw, the screw hole sets up on the inside axis of double-screw bolt, the bottom of screw hole is provided with the bell jar, and is provided with the expansion groove around the bell jar, the inside swing joint of screw hole has the reinforcement screw.

Preferably, be provided with seal structure between hexagon socket head screw head and the double-screw bolt, seal structure includes spliced pole, rubber backing ring and recess, spliced pole fixed connection is between hexagon socket head screw head and double-screw bolt, be provided with the recess on the lateral wall of spliced pole, the cover is equipped with the rubber backing ring on the lateral wall of spliced pole.

Preferably, the height of the connecting column is greater than that of the rubber backing ring, and the height of the rubber backing ring is greater than that of the groove.

Preferably, the outer side wall of the stud is provided with a screw blade, and the outer side walls of the hexagon socket head screw, the stud and the screw blade are all provided with nickel plating layers.

Preferably, the included angle between the bottom end screw surface of the wire blade and the stud is smaller than the included angle between the top end screw surface of the wire blade and the stud, and the thickness of the nickel plating layer is 0.02 mm.

Preferably, the expansion grooves are four groups, the expansion grooves are in a cross shape at the bottom end of the stud, internal threads matched with the reinforcing screws are arranged on the inner side walls of the threaded holes, and the threaded holes are in threaded connection with the reinforcing screws.

Compared with the prior art, the beneficial effects of the utility model are that: the wear-resistant carbon steel inner hexagonal plug screw is reasonable in structure and has the following advantages:

(1) the reinforcing screw is completely screwed into the threaded hole, the bottom end of the reinforcing screw enters the conical groove, the conical groove is arranged in a conical shape, the diameter of the bottom end of the conical groove is smaller than that of the reinforcing screw, the conical groove is propped open towards the periphery by the reinforcing screw, and the bottom end of the stud is indirectly controlled to expand towards the periphery through the arrangement of the expanding groove, so that the connection with an object is reinforced, and the carbon steel inner hexagonal plug screw has a reinforcing function;

(2) the connecting column, the rubber backing ring and the groove are arranged, the rubber backing ring is made of rubber, when the stud is completely screwed into the screw hole, the distance between the hexagon socket screw head and the object is reduced, the rubber backing ring is clamped, the rubber backing ring deforms after being pressed and expands inwards and outwards, the inner diameter of the rubber backing ring is filled in the groove, the vertical track of a gap is changed, and therefore the sealing effect between the rubber backing ring and the object is improved;

(3) through being provided with the double-screw bolt, the silk sword and nickel plating layer, the top surface of silk sword tends to 90 forms and sets up, the corresponding screw thread of cooperation is used, can effectually block the screw and take place the phenomenon of moving back in the screw is inside, realize the anti-drop effect, and the nickel plating layer has formed the one deck passivation layer on the surface of screw, can resist atmosphere, the corruption of alkali and some sour, the hardness of nickel plating layer is than higher, can improve the wearability on goods surface, the life of carbon steel hexagon socket head end cap screw has been improved, thereby make carbon steel hexagon head end cap screw have wear-resisting function.

Drawings

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

fig. 2 is a schematic front view of the cross-sectional structure of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is an enlarged schematic structural diagram of a in fig. 2 according to the present invention.

In the figure: 1. a socket head cap screw; 2. a sealing structure; 201. connecting columns; 202. a rubber backing ring; 203. a groove; 3. a stud; 4. a wire blade; 5. reinforcing the structure; 501. a threaded hole; 502. an expansion slot; 503. a tapered groove; 504. reinforcing screws; 6. a hexagonal counter bore; 7. and (4) plating a nickel layer.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a wear-resistant carbon steel inner hexagonal plug screw comprises an inner hexagonal screw head 1 and a stud 3, wherein a hexagonal counter bore 6 is formed in the inner hexagonal screw head 1, the stud 3 is arranged at the bottom end of the inner hexagonal screw head 1, a sealing structure 2 is arranged between the inner hexagonal screw head 1 and the stud 3, the sealing structure 2 comprises a connecting column 201, a rubber backing ring 202 and a groove 203, the connecting column 201 is fixedly connected between the inner hexagonal screw head 1 and the stud 3, the groove 203 is formed in the outer side wall of the connecting column 201, the rubber backing ring 202 is sleeved on the outer side wall of the connecting column 201, the height of the connecting column 201 is larger than that of the rubber backing ring 202, and the height of the rubber backing ring 202 is larger than that of the groove 203;

specifically, as shown in fig. 1 and fig. 2, when the reinforcing screw 504 is completely screwed into the threaded hole 501, the bottom end of the reinforcing screw 504 enters the tapered groove 503, because the tapered groove 503 is tapered, the diameter of the bottom end of the tapered groove 503 is smaller than that of the reinforcing screw 504, the tapered groove 503 is expanded by the reinforcing screw 504, and the bottom end of the stud 3 is indirectly controlled to expand to the periphery by the arrangement of the expansion groove 502, so as to reinforce the connection with the object;

a screw blade 4 is arranged on the outer side wall of the stud 3, nickel-plated layers 7 are arranged on the outer side walls of the hexagon socket head screw 1, the stud 3 and the screw blade 4, an included angle between a bottom end screw surface of the screw blade 4 and the stud 3 is smaller than an included angle between a top end screw surface of the screw blade 4 and the stud 3, and the thickness of the nickel-plated layers 7 is 0.02 mm;

specifically, as shown in fig. 1, 2 and 4, when the screw bolt is used, the rubber backing ring 202 is made of rubber, when the screw bolt 3 is completely screwed into the screw hole, the distance between the hexagon socket head 1 and the object is reduced, the rubber backing ring 202 is clamped, the rubber backing ring 202 deforms under pressure and expands inward and outward, and at the moment, the inner diameter of the rubber backing ring 202 is filled in the groove 203, so that the vertical track of the gap is changed, and a better sealing effect is achieved;

a reinforcing structure 5 is arranged inside the stud 3, the reinforcing structure 5 comprises a threaded hole 501, an expansion groove 502, a tapered groove 503 and a reinforcing screw 504, the threaded hole 501 is arranged on a central axis inside the stud 3, the tapered groove 503 is arranged at the bottom end of the threaded hole 501, the expansion groove 502 is arranged around the tapered groove 503, the reinforcing screw 504 is movably connected inside the threaded hole 501, four groups of the expansion grooves 502 are arranged, the expansion grooves 502 are in a cross shape at the bottom end of the stud 3, internal threads matched with the reinforcing screw 504 are arranged on the inner side wall of the threaded hole 501, and the threaded hole 501 and the reinforcing screw 504 are in threaded connection;

specifically, as shown in fig. 1, fig. 2 and fig. 3, during the use, the contained angle between the top surface of silk sword 4 and double-screw bolt 3 tends to 90 forms and sets up, the corresponding screw thread of cooperation is used, can effectually block the screw and take place the phenomenon of receding inside the screw, realize the anti-drop effect, and nickel-plated layer 7 has formed the one deck passivation layer on the surface of screw, can resist the corruption of atmosphere, alkali and some acid, nickel-plated layer 7's hardness is higher, can improve the wearability on goods surface, carbon steel hexagon socket head end cap screw's life has been improved.

The working principle is as follows: when the device is used, firstly, the device is taken out, the stud 3 is inserted into a screw hole to be installed, then a tool is inserted into the hexagonal counterbore 6 and rotated, the stud 3 is controlled to be screwed into the screw hole, when the stud 3 is completely screwed into the screw hole, the distance between the inner hexagonal screw head 1 and an object is reduced, the rubber backing ring 202 is clamped, the rubber backing ring 202 deforms after being pressed and expands inwards and outwards, at the moment, the inner diameter of the rubber backing ring 202 is filled into the groove 203, and the vertical track of a gap is changed, so that better sealing performance is realized;

secondly, when the carbon steel inner hexagonal plug screw needs to be reinforced, the reinforcing screw 504 is inserted into the threaded hole 501, a tool is used for rotating the reinforcing screw 504, the reinforcing screw 504 is controlled to enter the threaded hole 501, the bottom end of the reinforcing screw 504 can enter the tapered groove 503, the tapered groove 503 is arranged in a tapered shape, the diameter of the bottom end of the tapered groove 503 is smaller than that of the reinforcing screw 504, the tapered groove 503 can be opened towards the periphery by the reinforcing screw 504, the diameter of the stud 3 is indirectly expanded through the arrangement of the expansion groove 502, the diameter of the bottom end of the stud 3 is increased, and the bottom end of the stud 3 is embedded into the threaded hole, so that the connection of the carbon steel inner hexagonal plug screw is realized;

finally, the included angle between the top surface of the screw blade 4 and the stud 3 tends to be 90 degrees, the screw is matched with corresponding threads for use, the screw can be effectively prevented from retreating inside the screw hole, the anti-falling effect is realized, the nickel-plated layer 7 forms a passivation layer on the surface of the screw, the corrosion of atmosphere, alkali and certain acid can be resisted, the hardness of the nickel-plated layer 7 is higher, the wear resistance of the surface of a product can be improved, and the service life of the carbon steel inner hexagonal plug screw can be prolonged.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a wear-resisting formula carbon steel hexagon socket head cap screw, includes hexagon socket head cap screw head (1) and double-screw bolt (3), its characterized in that: the inside of allen key head (1) is provided with hexagonal counter bore (6), the bottom of allen key head (1) is provided with double-screw bolt (3), the inside of double-screw bolt (3) is provided with reinforced structure (5), reinforced structure (5) are including screw hole (501), expansion groove (502), bell jar (503) and reinforcement screw (504), screw hole (501) set up on the axis of double-screw bolt (3) inside, the bottom of screw hole (501) is provided with bell jar (503), and is provided with expansion groove (502) around bell jar (503), the inside swing joint of screw hole (501) has reinforcement screw (504).

2. The wear-resistant carbon steel hexagon socket head cap screw as claimed in claim 1, wherein: be provided with seal structure (2) between hexagon socket screw head (1) and double-screw bolt (3), seal structure (2) are including spliced pole (201), rubber backing ring (202) and recess (203), spliced pole (201) fixed connection is between hexagon socket screw head (1) and double-screw bolt (3), be provided with recess (203) on the lateral wall of spliced pole (201), the cover is equipped with rubber backing ring (202) on the lateral wall of spliced pole (201).

3. The wear-resistant carbon steel hexagon socket head cap screw as claimed in claim 2, wherein: the height of the connecting column (201) is greater than that of the rubber backing ring (202), and the height of the rubber backing ring (202) is greater than that of the groove (203).

4. The wear-resistant carbon steel hexagon socket head cap screw as claimed in claim 1, wherein: the outer side wall of the stud (3) is provided with a screw blade (4), and the outer side walls of the inner hexagonal screw head (1), the stud (3) and the screw blade (4) are all provided with a nickel plating layer (7).

5. The wear-resistant carbon steel hexagon socket head cap screw as claimed in claim 4, wherein: the included angle between the bottom end screw surface of the screw blade (4) and the stud (3) is smaller than the included angle between the top end screw surface of the screw blade (4) and the stud (3), and the thickness of the nickel plating layer (7) is 0.02 mm.

6. The wear-resistant carbon steel hexagon socket head cap screw as claimed in claim 1, wherein: the expansion grooves (502) are four groups, the expansion grooves (502) are in a cross shape at the bottom end of the stud (3), internal threads matched with the reinforcing screws (504) are arranged on the inner side wall of the threaded holes (501), and the threaded holes (501) and the reinforcing screws (504) are in threaded connection.