CN212455138U

CN212455138U - Functional bolt

Info

Publication number: CN212455138U
Application number: CN201821491857.8U
Authority: CN
Inventors: 甘建国
Original assignee: Zhejiang Chaobol Hardware Co ltd
Current assignee: Zhejiang Chaobol Hardware Co ltd
Priority date: 2018-09-13
Filing date: 2018-09-13
Publication date: 2021-02-02
Anticipated expiration: 2028-09-13

Abstract

The utility model provides a functional bolt, including bolt head, shank of bolt and unscrewing bolt, the shank of bolt is from supreme self tapping section, first screw thread section, second screw thread section, the third screw thread section of being equipped with in proper order down, the lower extreme of bolt head is equipped with the spread groove, the inner wall of spread groove is equipped with first internal thread, the outer wall a week of spread groove bonds there is sealed the pad, the upside of bolt head is equipped with the platform, be equipped with the plum blossom groove in the platform, the plum blossom inslot is equipped with the circular recess, be equipped with a straight line shape groove in the circular recess, the shank of bolt is equipped with the inner chamber, the inner wall of inner chamber is equipped with the second internal thread, the unscrewing bolt includes unscrewing the shank of bolt and the unscrewing bolt head, be equipped with first external screw. The utility model relates to a functional bolt is fit for screwing up of multiple spanner head, the long service life of bolt, and fastening nature is good, still is equipped with the self-tapping head simultaneously, can regard as self-tapping screw to use, has improved performance.

Description

Functional bolt

Technical Field

The utility model relates to a technical field of fastener, especially a functional bolt.

Background

The bolt is a fastener consisting of a bolt head and a screw (a cylinder with external threads) and is used for fastening and connecting two mechanical equipment parts with through holes. Bolts are essential in daily life and in the technical field of sheet metal and machine tool machining. Then, the existing bolt generally only has the functions of the bolt, has single function and cannot meet the requirements under other conditions; and the common bolt only adapts to one wrench head for screwing, the adaptability is not high, only one wrench head can be found, and the bolt cannot be screwed when the corresponding wrench head is not arranged at the side, so that certain trouble is caused to the screwing work.

Disclosure of Invention

The utility model discloses an aim at solving the problem among the prior art, provide a functional bolt, be fit for screwing up of multiple wrench end, the long service life of bolt, fastening nature is good, still is equipped with the self-tapping head simultaneously, can regard as self-tapping screw to use, has improved performance.

In order to achieve the above object, the present invention provides a functional bolt, including a bolt head, a bolt shaft and a loosening bolt, wherein the bolt shaft is sequentially provided with a self-tapping section, a first thread section, a second thread section and a third thread section from bottom to top, the lower end of the bolt head is provided with a connecting groove, the inner wall of the connecting groove is provided with a first internal thread, the first internal thread is matched with the first thread section and the second thread section, the thread direction of the first internal thread is the same as that of the second thread section, the self-tapping section is located in the connecting groove, a sealing gasket is bonded to a circumference of the outer wall of the connecting groove, the upper side of the bolt head is provided with a platform, a quincuncial groove is arranged in the platform, a circular groove is arranged in the quincuncial groove, the bolt shaft is provided with an inner cavity, the inner wall of the inner cavity is provided with a second internal thread, the loosening bolt comprises a, the bolt loosening rod is provided with a first external thread matched with the second internal thread, the turning direction of the first external thread is opposite to that of the second thread section, and the bolt loosening head and the bolt loosening rod are integrally formed.

Preferably, the sealing gasket is in a round table shape, the sealing gasket comprises an upper table top, a middle table top and a lower table top, the upper table top is bonded with the lower end of the bolt head in a circle, the inner diameter of the lower table top is larger than the outer diameter of the bolt rod, a high-temperature-resistant layer is arranged on the surface of the sealing gasket, and a corrosion-resistant layer is arranged on the surface of the high-temperature-resistant layer.

Preferably, the bolt head is circular or regular hexagon in shape, a magnet groove is formed in the periphery of the outer wall of the bolt head, a magnet is arranged in the magnet groove, a handle is welded on one side of the bolt head, and the handle is circular, square, oval or gourd-shaped.

Preferably, the connecting groove is circular, the outer diameters of the unscrewing bolt head and the unscrewing bolt rod are the same, the outer diameter of the unscrewing bolt head is matched with the inner diameter of the inner wall of the inner cavity, the height of the unscrewing bolt head is smaller than or equal to the depth of the connecting groove, the unscrewing bolt head is circular, a second external thread is arranged on the outer wall of the unscrewing bolt head in a circle, the second external thread is matched with the second internal thread, and a cross groove is formed in the lower end of the unscrewing bolt head.

The utility model has the advantages that: the utility model has the advantages that the upper end of the bolt head is provided with the plum blossom groove, the plum blossom groove is internally provided with the circular groove, and the straight groove is internally provided with the circular groove, so that the wrench head can adapt to the tightening of wrench heads with different shapes; set up the self tapping end in the upper end of shank of bolt, when using as the bolt, first screw thread section and spread groove threaded connection, self tapping section are located the spread groove, and when using as self tapping screw, spread groove and third screw thread section threaded connection have increased the utility model discloses a self tapping function has improved the utility model discloses a practicality.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a functional bolt according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the gasket of the present invention;

FIG. 3 is a schematic structural view of a bolt shaft according to the present invention;

FIG. 4 is a cross-sectional view of a bolt shaft of the present invention;

fig. 5 is a schematic structural view of the bolt of the present invention;

fig. 6 is a bottom view of the bolt head of the present invention.

In the figure: 1-bolt head, 2-bolt rod, 3-unscrewing bolt, 11-connecting groove, 12-sealing gasket, 13-platform, 14-magnet, 15-handle, 21-first thread section, 22-second thread section, 23-third thread section, 24-self-tapping section, 25-inner cavity, 31-unscrewing bolt rod, 32-unscrewing bolt head, 111-first internal threads, 121-upper table top, 122-middle table top, 123-lower table top, 131-plum blossom groove, 132-round groove, 133-straight groove, 221-large thread section, 222-small thread section, 223-large threads, 224-small threads, 251-second internal threads, 311-first external threads, 321-second external threads and 322-cross groove.

Detailed Description

Referring to fig. 1 to 6, the functional bolt of the present invention includes a bolt head 1, a bolt shaft 2 and a loosening bolt 3, wherein the bolt shaft 2 is sequentially provided with a self-tapping section 24, a first thread section 21, a second thread section 22 and a third thread section 23 from bottom to top, the lower end of the bolt head 1 is provided with a connecting groove 11, the inner wall of the connecting groove 11 is provided with a first internal thread 111, the first internal thread 111 is matched with the first thread section 21 and the second thread section 22, the thread directions of the first internal thread 111 and the second thread section 22 are the same, the self-tapping section 24 is located in the connecting groove 11, a sealing gasket 12 is bonded to a circumference of the outer wall of the connecting groove 11, a platform 13 is arranged on the upper side of the bolt head 1, a quincunx groove 131 is arranged in the platform 13, a circular groove 132 is arranged in the quincunx groove 131, a linear groove 133 is arranged in the circular groove 132, the inner wall of the inner cavity 25 is provided with a second internal thread 251, the unscrewing bolt 3 comprises an unscrewing bolt rod 31 and an unscrewing bolt head 32, the unscrewing bolt rod 31 is provided with a first external thread 311 matched with the second internal thread 251, the turning direction of the first external thread 311 is opposite to that of the second thread section 22, the unscrewing bolt head 32 and the unscrewing bolt rod 2 are integrally formed, the sealing gasket 12 is in a circular truncated cone shape, the sealing gasket 12 comprises an upper table surface 121, a middle table surface 122 and a lower table surface 123, the upper table surface 121 is bonded with one circle of the lower end of the bolt head 1, the inner diameter of the lower table surface 123 is larger than the outer diameter of the bolt rod 2, the surface of the sealing gasket 12 is provided with a high-temperature resistant layer, the surface of the high-temperature resistant layer is provided with a corrosion-resistant layer, the bolt head 1 is in a circular or regular hexagon shape, one circle of the outer wall of the bolt head 1 is provided with a magnet groove, and a magnet, one side of bolt head 1 is equipped with the welding and has handle 15, handle 15 is in one kind in circular, square, oval or calabash shape, spread groove 11 is circular, the external diameter of unscrewing bolt head 32 and unscrewing shank of bolt 31 is the same, the external diameter of unscrewing bolt head 32 and the inner wall internal diameter phase-match of inner chamber 25, the degree of depth that highly less than or equal to spread groove 11 of unscrewing bolt head 32, the unscrewing bolt head 32 is circular, outer wall a week of unscrewing bolt head 32 is equipped with second external screw thread 321, second external screw thread 321 and second internal thread 251 phase-match, the lower extreme of unscrewing bolt head 32 is equipped with cross recess 322.

The utility model discloses the working process:

in the working process of the functional bolt, the utility model discloses a quincuncial groove 131 is arranged at the upper end of the bolt head 1, a circular groove 132 is arranged in the quincuncial groove 131, and a straight groove 133 is arranged in the circular groove 132, so that the utility model can adapt to the tightening of wrench heads with different shapes; the upper end of the bolt rod 2 is provided with a self-tapping end 24, when the bolt is used as a bolt, the first thread section 21 is in threaded connection with the connecting groove 11, the self-tapping section 24 is positioned in the connecting groove 11, when the bolt is required to be disassembled, firstly, the bolt head 1 and the bolt rod 2 are in threaded disassembly, then, the unscrewing bolt 3 is in threaded separation from the inner cavity 25, as the first external thread 311 of the unscrewing bolt 3 and the second bolt section 22 are in opposite turning directions, the first external thread 311 is in a clockwise direction, the second bolt section 22 is in an anticlockwise direction, otherwise, the unscrewing bolt 3 is screwed out from the inner cavity 25 clockwise or anticlockwise, the second bolt section 22 keeps tightness with an object anticlockwise or clockwise, then, the unscrewing bolt 3 is inserted into the inner cavity 25 and screwed up with the inner cavity 25 clockwise or anticlockwise, the second thread section 22 is slowly separated from the material counterclockwise or clockwise by external force, until completely free of the link; when the self-tapping screw is used as a self-tapping screw, the connecting groove 11 is in threaded connection with the third thread section 23, so that the self-tapping function of the self-tapping screw is increased, the practicability of the self-tapping screw is improved, and if the self-tapping screw needs to be disassembled, the steps are the same as those of the screw used as a bolt; the magnet 14 and the handle 15 are arranged to fix the utility model, so that the loss probability is reduced; the sealing gasket 12 improves the sealing performance of the connecting part when the utility model is connected with an object.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A functional bolt, its characterized in that: the bolt comprises a bolt head (1), a bolt rod (2) and a unscrewed bolt (3), wherein the bolt rod (2) is sequentially provided with a self-tapping section (24), a first thread section (21), a second thread section (22) and a third thread section (23) from bottom to top, the lower end of the bolt head (1) is provided with a connecting groove (11), the inner wall of the connecting groove (11) is provided with a first internal thread (111), the first internal thread (111) is matched with the first thread section (21) and the second thread section (22), the thread directions of the first internal thread (111) and the second thread section (22) are the same, the self-tapping section (24) is positioned in the connecting groove (11), a sealing gasket (12) is bonded on one circle of the outer wall of the connecting groove (11), a platform (13) is arranged on the upper side of the bolt head (1), a plum blossom groove (131) is arranged in the platform (13), and a circular groove (132) is, be equipped with slotted groove (133) in circular slot (132), shank of bolt (2) are equipped with inner chamber (25), the inner wall of inner chamber (25) is equipped with second internal thread (251), unscrew bolt (3) including unscrewing shank of bolt (31) and unscrewing bolt head (32), be equipped with on unscrewing shank of bolt (31) with second internal thread (251) assorted first external screw thread (311), the turning to of first external screw thread (311) is opposite with the turning to of second screw thread section (22), unscrewing bolt head (32) and unscrewing shank of bolt (2) integrated into one piece.

2. A functional bolt according to claim 1, wherein: the sealing gasket (12) is in a round table shape, the sealing gasket (12) comprises an upper table top (121), a middle table top (122) and a lower table top (123), the upper table top (121) is bonded with the lower end of a bolt head (1) in a circle, the inner diameter of the lower table top (123) is larger than the outer diameter of a bolt rod (2), a high-temperature-resistant layer is arranged on the surface of the sealing gasket (12), and a corrosion-resistant layer is arranged on the surface of the high-temperature-resistant layer.

3. A functional bolt according to claim 1, wherein: the shape of bolt head (1) is circular or regular hexagon, outer wall a week of bolt head (1) is equipped with the magnet groove, be equipped with magnet (14) in the magnet groove, one side of bolt head (1) is equipped with the welding and has handle (15), handle (15) are one kind in circular, square, oval or calabash shape.

4. A functional bolt according to claim 1, wherein: the utility model discloses a bolt head, including connecting groove (11), the external diameter of unscrewing bolt head (32) and unscrewing shank of bolt (31) is the same, the external diameter of unscrewing bolt head (32) and the inner wall internal diameter phase-match of inner chamber (25), the degree of depth of highly less than or equal to connecting groove (11) of unscrewing bolt head (32), unscrewing bolt head (32) are circular, the outer wall a week of unscrewing bolt head (32) is equipped with second external thread (321), second external thread (321) and second internal thread (251) phase-match, the lower extreme of unscrewing bolt head (32) is equipped with cross recess (322).