CN212899325U

CN212899325U - Fastener for high-precision mechanical assembly

Info

Publication number: CN212899325U
Application number: CN202021512681.7U
Authority: CN
Inventors: 周小龙
Original assignee: Dongguan Xinzhou Hardware Co ltd
Current assignee: Dongguan Xinzhou Hardware Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-06
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a high accuracy is fastener for mechanical assembly, which comprises a screw, the screw includes hexagonal piece, screw rod and external screw thread, the cover is equipped with first gasket on the screw rod in the screw, and has the nut through threaded connection on the screw rod in the screw, be provided with the supporting pad structure with support and protection on the screw rod in the screw, and the supporting pad structure is located between first gasket and the nut. A high accuracy is fastener for mechanical assembly belongs to the fastener field, through the supporting pad structure that sets up, utilize protection casing and second gasket cooperation to use, can guarantee the result of use the same with ordinary gasket, still possess certain protect function simultaneously to the elastic metal pad that sets up among the supporting pad structure possesses buffering effect, has further ensured the result of use of second gasket, the cooperation is connected between second gasket and the protection casing, can dismantle to get off to change, has improved the flexibility when using.

Description

Fastener for high-precision mechanical assembly

Technical Field

The utility model relates to a fastener field, in particular to fastener for high accuracy mechanical mounting.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application. The fastener is used in the industries of energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, can be seen in various types of fasteners on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments, supplies and the like, and is a most widely applied mechanical basic part. Fasteners are particularly widely used in mechanical assembly; the fastener disclosed in chinese patent No. CN202579581U can achieve the following effects: the safety of the nut in use is effectively improved, and the stability of the matching of the bolt and the nut is improved. However, in this patent, the protection wall is a part of the gasket, and although the protection wall has a certain protection effect, when the replacement is required, the whole body needs to be replaced, which causes too high use cost, and has a certain limitation in use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a high accuracy is fastener for mechanical assembly, can effectively solve the problem among the background art.

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

the utility model provides a high accuracy is fastener for mechanical assembly, includes the screw, the screw includes hexagonal piece, screw rod and external screw thread, the cover is equipped with first gasket on the screw rod in the screw, and has the nut through external screw thread connection on the screw rod in the screw, be provided with the supporting pad structure with support and protection on the screw rod in the screw, and supporting pad structure is located between first gasket and the nut.

Preferably, the screw rod is fixed in the middle of the lower surface of the hexagonal block, the screw rod and the hexagonal block are integrally formed, and the external thread is fixed on the outer surface of the screw rod.

Preferably, the supporting pad structure includes protection casing, elastic metal pad, second gasket and round hole, elastic metal pad, second gasket all set up in the protection casing, the round hole is seted up on elastic metal pad and second gasket.

Preferably, the protective cover comprises a protective cover main body, a cavity, a placing groove and a through hole, the cavity is arranged on the protective cover main body, the placing groove is arranged in the cavity on the protective cover main body, the through hole penetrates through the protective cover main body, and the through hole is communicated with the placing groove.

Preferably, the nut is provided with a threaded hole, the threaded hole is in threaded connection with the external thread on the screw rod, and the nut is connected to the screw rod through the mutual matching of the threaded hole and the external thread.

Compared with the prior art, the utility model discloses following beneficial effect has: this fastener is used in high accuracy machinery assembly, through the supporting pad structure that sets up, utilize protection casing and second gasket cooperation to use, can guarantee the result of use the same with ordinary gasket, still possess certain protect function simultaneously to the elastic metal pad that sets up in the supporting pad structure possesses buffering effect, has further ensured the result of use of second gasket, and the cooperation is connected between second gasket and the protection casing, can dismantle to get off to change, has improved the flexibility when using.

Drawings

FIG. 1 is a schematic view of the overall structure of a high-precision mechanical fastener of the present invention;

FIG. 2 is a schematic structural view of a screw of a high-precision mechanical assembly fastener of the present invention;

FIG. 3 is a schematic structural view of a protective cover of a high-precision mechanical assembly fastener of the present invention;

fig. 4 is a schematic structural view of the fastener shield main body for high-precision mechanical assembly according to the present invention.

In the figure: 1. a screw; 101. a hexagonal block; 102. a screw; 103. an external thread; 2. a first gasket; 3. a nut; 4. a support pad structure; 401. a protective cover; 4011. a shield body; 4012. a cavity; 4013. a placement groove; 4014. a through hole; 402. an elastic metal pad; 403. a second gasket; 404. a circular hole; 5. a threaded bore.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, a high-precision mechanical assembly fastener comprises a screw 1, the screw 1 comprises a hexagonal block 101, a screw 102 and an external thread 103, the screw 102 in the screw 1 is sleeved with a first gasket 2, the screw 102 in the screw 1 is connected with a nut 3 through the external thread 103, the screw 102 in the screw 1 is provided with a supporting pad structure 4 for supporting and protecting, and the supporting pad structure 4 is located between the first gasket 2 and the nut 3;

the screw 102 is fixed at the middle position of the lower surface of the hexagonal block 101, the screw 102 and the hexagonal block 101 are integrally connected, the external thread 103 is fixed on the outer surface of the screw 102, and the components in the screw 1 are integrally formed, so that the use strength is guaranteed.

Supporting pad structure 4 includes protection casing 401, elastic metal pad 402, second gasket 403 and round hole 404, elastic metal pad 402, second gasket 403 all sets up in protection casing 401, round hole 404 is seted up on elastic metal pad 402 and second gasket 403, supporting pad structure 4 through setting up, utilize protection casing 401 and the cooperation of second gasket 403 to use, the result of use the same with ordinary gasket can be guaranteed, still possess certain protect function simultaneously, the elastic metal pad 402 that sets up among supporting pad structure 4 possesses buffering effect, the result of use of second gasket 403 has further been ensured, the cooperation is connected between second gasket 403 and the protection casing 401, can dismantle and get off to change, flexibility when having improved the use.

The protective cover 401 comprises a protective cover main body 4011, a cavity 4012, a placement groove 4013 and a through hole 4014, the cavity 4012 is arranged on the protective cover main body 4011, the placement groove 4013 is arranged in the cavity 4012 on the protective cover main body 4011, the through hole 4014 penetrates through the protective cover main body 4011, the through hole 4014 is communicated with the placement groove 4013, the placement groove 4013 is arranged in the protective cover 401 and used for placing a second gasket 403, and the using effect is guaranteed.

Be provided with screw hole 5 on the nut 3, and threaded connection between screw hole 5 and the external screw thread 103 on the screw rod 102, nut 3 is connected on screw rod 102 through the mutually supporting between screw hole 5, the external screw thread 103, and nut 3 is cooperating screw 1 and is using, can effectual fastening corresponding structure.

It should be noted that, the utility model relates to a high accuracy is fastener for mechanical assembly, when using, the staff overlaps first gasket 2 on screw rod 102 in screw 1, have afterwards that screw 1 with first gasket 2 inserts the hole on the adjacent structure that needs assemble in, make the external screw thread 103 of screw rod 102 tip wear out from the sky on the structure, the staff overlaps protection casing 401 in the supporting pad structure 4 to the end of screw rod 102 afterwards, make the end of screw rod 102 pass through-hole 4014 on the protection casing main part 4011 in proper order, standing groove 4013 and cavity 4012, afterwards overlap elasticity metal pad 402 and second gasket 403 to the end of screw rod 102 in proper order, make elasticity metal pad 402 and second gasket 403 be located in standing groove 4013 in cavity 4012, then the staff rotates nut 3 to the end of screw rod 102, make between nut 3 and the screw rod 102 through screw hole 5, The external thread 103 is connected with the screw rod 102, the nut 3 is rotated to move along the screw rod 102 until the upper end of the nut 3 contacts the second gasket 403, at the moment, the corresponding structures are not fixed well, a worker clamps the nut 3 and the hexagonal block 101 respectively by using a tool, rotates the hexagonal block 101, the screw rod 102 and the nut 3 continuously move relatively until the fastener is screwed, at the moment, the two corresponding structures are assembled together under the action of the fastener, in the fastening process, the elastic metal pad 402 has a certain buffering effect and can protect the second gasket 403, the service life is prolonged, under the action of the first gasket 2 and the second gasket 403, the stress area is relatively increased, the use effect of the fastener is ensured, after the mechanical structure is assembled, the protective cover 401 in the supporting pad structure 4 can cover a part of the nut 3, simultaneously can effectual protection second gasket 403 isotructure, when needing to dismantle, the nut 3 can be loosened in the unscrewing, after dismantling nut 3, second gasket 403 is because use before may warp and need to be changed, and the staff can change brand-new second gasket 403 and use, through the supporting pad structure 4 that sets up, can effectual protection nut 3 isotructure, increase of service life. Meanwhile, the protective cover 401 is matched with the second gasket 403 for use, so that the stress area is increased, the second gasket 403 is convenient to replace, and the flexibility in use is improved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fastener is used in high accuracy mechanical assembly which characterized in that: including screw (1), screw (1) includes hexagonal piece (101), screw rod (102) and external screw thread (103), the cover is equipped with first gasket (2) on screw rod (102) in screw (1), and is connected with nut (3) through external screw thread (103) on screw rod (102) in screw (1), be provided with supporting pad structure (4) with support and protection on screw rod (102) in screw (1), and supporting pad structure (4) are located between first gasket (2) and nut (3).

2. A high-precision mechanical fitting fastener according to claim 1, characterized in that: the screw (102) is fixed at the middle position of the lower surface of the hexagonal block (101), the screw (102) and the hexagonal block (101) are connected in an integrated forming mode, and the external threads (103) are fixed on the outer surface of the screw (102).

3. A high-precision mechanical fitting fastener according to claim 1, characterized in that: the supporting pad structure (4) comprises a protective cover (401), an elastic metal pad (402), a second gasket (403) and a round hole (404), wherein the elastic metal pad (402) and the second gasket (403) are arranged in the protective cover (401), and the round hole (404) is arranged on the elastic metal pad (402) and the second gasket (403).

4. A high-precision mechanical fitting fastener according to claim 3, characterized in that: the protective cover (401) comprises a protective cover main body (4011), a cavity (4012), a placing groove (4013) and a through hole (4014), the cavity (4012) is arranged on the protective cover main body (4011), the placing groove (4013) is arranged in the cavity (4012) on the protective cover main body (4011), the through hole (4014) penetrates through the protective cover main body (4011), and the through hole (4014) is communicated with the placing groove (4013).

5. A high-precision mechanical fitting fastener according to claim 1, characterized in that: the nut (3) is provided with a threaded hole (5), the threaded hole (5) is in threaded connection with an external thread (103) on the screw rod (102), and the nut (3) is connected to the screw rod (102) through mutual matching of the threaded hole (5) and the external thread (103).