CN100578024C - Combined Bolt - Google Patents

Abstract

The invention discloses a combination bolt, comprising two screws (1), two washers (2) and a positioning guide rod (3); the two washers (2) are respectively clamped on the two end surfaces of the positioning guide rod (3), namely, the two end surfaces of the positioning guide rod (3) are respectively provided with two or more than two concave troughs (32); the inner circles of the two washers (2) are respectively provided with two or more than two convex blocks (21) which can be clamped on the concave troughs (32); the two screws (1) are respectively screwed in the axial thread holes (31) at the two ends of the positioning guide rod (3). The combination bolt has the advantages of convenient and flexible disassembly/assembly and maintenance, wide applicable range, and effectively playing the firm connection function of a rivet.

Description

Combined Bolt

Technical field:

The invention relates to a fastener for mechanical connection, in particular to a combined bolt.

Background technique:

In the machinery industry, the use of rivets is to pass one end of the rivet through the light holes of the two connected parts, and then punch it through special stamping equipment or hammer it with a hammer, so as to connect the two connected parts together. Although the connection with rivets is firm, since one end of the rivet is riveted after being stamped or hammered, the two connected parts cannot be disassembled in the future, which hinders the daily disassembly and assembly of the connected parts in the future. It is inconvenient for maintenance and maintenance, and because of the inconvenience of disassembly and maintenance of rivets, it is inconvenient to use in some specific places such as field mechanical work environments, which limits the scope of its use.

Invention content:

The technical problem to be solved by the present invention is to provide a combined bolt that is easy to disassemble and maintain, flexible, has a wide range of applications, and can effectively play the role of a rivet in a firm connection.

The technical solution of the present invention is to provide a combined bolt with the following structure: it includes a screw and a positioning guide rod; there are two screws; In the threaded hole; the axial threaded holes at both ends of the positioning guide rod are connected; the two ends of the positioning guide rod between the screw and the axial threaded hole are respectively clamped with washers: the two ends of the positioning guide rod There are two or more grooves on the end faces; two or more protrusions that can be stuck on the grooves are arranged on the inner circle of the washer; the screws are flat head screws, Cross round head screws or hexagon socket head round head screws; or, the screws are flat head screws, cross round head screws or hexagon socket head screws; or, the screws are outer hexagon screws, slotted outer hexagon screws, Phillips socket head cap screws and socket head cap screws.

After adopting the above structure, compared with the prior art, the present invention has the following advantages: since the two screws in the present invention are all screwed in the threaded holes at both ends of the positioning guide rod, the combined bolts of the present invention are not only disassembled, The maintenance is convenient and flexible, and the disassembly and maintenance are convenient and flexible, so that the present invention is suitable for use in many places; and the present invention plays the role of firm connection by rivets through the cooperation of screws and positioning guide rods.

Connecting the axial threaded holes at both ends of the positioning guide rod, that is, only setting one axial threaded hole in the positioning guide rod can make the use of the two screws different in the present invention, and the two screws can be determined respectively according to actual use needs. length.

The cooperating use of the washer, the screw and the positioning guide bar can make the present invention further fully exert the firm connection characteristic of the rivet.

Description of drawings:

Fig. 1 is a structural schematic diagram of the combined bolt of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of the combined bolt of the present invention.

Fig. 3 is a structural schematic diagram of a slotted hexagonal screw.

Fig. 4 is a schematic diagram of the structure of a cross outer hexagonal screw.

Fig. 5 is a structural schematic diagram of a hexagon socket head cap screw.

Fig. 6 is a structural schematic diagram of a slotted pan head screw.

Fig. 7 is a schematic structural diagram of a cross pan head screw.

Fig. 8 is a schematic structural diagram of a hexagon socket pan head screw.

Fig. 9 is a schematic structural view of a slotted round head screw.

Fig. 10 is a schematic structural view of a Phillips round head screw.

Fig. 11 is a schematic structural view of a hexagon socket head screw.

Shown in the figure: 1, screw, 2, washer, 3, positioning guide rod, 31, axial threaded hole, 32, groove, 21, projection.

Specific examples:

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

As shown in FIGS. 1 , 2 , 3 , 4 , 5 and 6 , the combined bolt of the present invention includes two screws 1 , two washers 2 and a positioning guide rod 3 . The two washers 2 are respectively clamped on the two ends of the positioning guide rod 3. In this specific embodiment, the gaskets 2 are clamped on the two ends of the positioning guide rod 3 and adopt the following specific structure: Two grooves 32 are respectively provided on both ends of the positioning guide rod 3 ; two protrusions 21 capable of being stuck on the grooves 32 are respectively provided on the inner circles of the two washers 2 . Of course, the number of grooves 32 and bumps 21 in the present invention can also be three, four or five. The two screws 1 are respectively screwed into the axial threaded holes 31 at both ends of the positioning guide rod 3 . In this specific embodiment, the axial threaded holes 31 at both ends of the positioning guide rod 3 are connected, in other words, there is only one axial threaded hole in the present invention. In the present invention, the screw 1 can be a flat head screw, a cross round head screw, a hexagon socket head screw, a flat head screw, a cross round head screw, a hexagon socket head screw, an outer hexagon screw, a Word outer hexagon screws, cross outer hexagon screws and inner hexagon screws. In this specific embodiment, the screw 1 is an outer hexagonal screw.

In the present invention, the structure that the washer 2 is clamped on the two ends of the positioning guide rod 3 is not limited to the arrangement of grooves 32 on the two ends of the positioning guide rod 3 and the arrangement on the inner circle of the washer 2 that can be stuck in the groove. Projection 21 on the 32, it also can be provided with projection 21 on the two end faces of positioning guide bar 3, and groove 32 is provided on the inner circle of washer 2, and above-mentioned change falls into protection scope of the present invention equally.

Claims (1)

1. A combined bolt, including a screw (1), two screws (1); it is characterized in that: it also includes a positioning guide rod (3); the two screws (1) are rotated separately fit in the axial threaded holes (31) at both ends of the positioning guide rod (3); the axial threaded holes (31) at both ends of the positioning guide rod (3) are connected; the screw (1) and the axial thread Washers (2) are clamped on both ends of the positioning guide rod (3) between the holes (31): two or more than two grooves are respectively provided on the two ends of the positioning guide rod (3) (32); the inner circle of the washer (2) is provided with two or more projections (21) that can be stuck on the groove (32); the screw (1) is a flat head screw , Phillips round head screw or hexagon socket head round head screw; or, the screw (1) is a flat head screw, a cross round head screw or a hexagon socket head screw; or, the screw (1) is an outer hexagonal screw , Slotted hexagon screws, cross hexagon screws and hexagon socket screws.

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