CN217814323U - Bolt and nut fastening structure - Google Patents
Bolt and nut fastening structure Download PDFInfo
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- CN217814323U CN217814323U CN202221247707.9U CN202221247707U CN217814323U CN 217814323 U CN217814323 U CN 217814323U CN 202221247707 U CN202221247707 U CN 202221247707U CN 217814323 U CN217814323 U CN 217814323U
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- wedge
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- bolt
- connecting piece
- moving block
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Abstract
The utility model provides a bolt and nut fastening structure belongs to mechanical connection technical field, include: the first connecting piece is used for abutting and connecting with a first workpiece; the second connecting piece is detachably connected with the first connecting piece; the first fixing block is connected with the second connecting piece in an abutting mode through the first plane; and the moving block can move into the fastening space, and when the moving block is positioned in the fastening space, the moving block is in abutting connection with the first wedge-shaped surface through the second wedge-shaped surface so as to push the second workpiece to abut against the first workpiece. The utility model has the advantages that: the moving block can push the second workpiece to be abutted against the first workpiece through the abutting connection of the second wedge-shaped surface and the first wedge-shaped surface, so that the second connecting piece has certain pretightening force, a wrench is not needed to be used for rotating operation around the axis of the bolt, and only a space for knocking is reserved along the radial direction of the bolt and aligned with the wedge-shaped block.
Description
Technical Field
The utility model belongs to the technical field of mechanical connection, a bolt and nut fastening structure is related to.
Background
Bolt and nut are connected is a common mechanical connection mode, and bolt and nut generally all fasten through spanner swivel nut, realize the pretightning force of bolt, and the spanner commonly used has monkey wrench, open-end wrench, box spanner, allen key, box spanner etc. no matter what kind of spanner of adoption comes fastening bolt, all needs to reserve the rotation operation space of spanner.
For example, an invention patent with the application number of CN201310210758.3 provides a novel bolt connection structure, which comprises an upper connection plate, a lower connection plate, a bolt and a nut, wherein the upper connection plate and the lower connection plate are respectively provided with a unthreaded hole, the bolt is inserted into the connection plate from bottom to top, the extended end of the upper connection plate is fastened through the nut, countersunk grooves are respectively processed at the end parts of the unthreaded holes of the upper connection plate and the lower connection plate, and the surfaces of the countersunk grooves are respectively subjected to roughening treatment and related post-treatment, so that the connection strength of the bolt is more reliable.
In summary, some existing technical solutions still need to reserve a wrench working space, and fastening is achieved by rotating a wrench, so that a larger rotating space is needed, and the wrench is illegally applicable to occasions where the working space is small and it is difficult to rotate a nut by using a wrench, and has a larger improvement space.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, a bolt and nut fastening structure is proposed.
The purpose of the utility model can be realized by the following technical proposal: a bolt-and-nut fastening structure comprising:
the first connecting piece is used for abutting connection with a first workpiece;
the second connecting piece is detachably connected with the first connecting piece, and a fastening space is formed between the second connecting piece and a second workpiece;
the first fixing block is arranged in the fastening space and is provided with a first wedge-shaped surface and a first plane, and the first fixing block is in abutting connection with the second connecting piece through the first plane;
the moving block is capable of moving into the fastening space and provided with a second wedge-shaped surface, and when the moving block is located in the fastening space, the moving block is in abutting connection with the first wedge-shaped surface through the second wedge-shaped surface so as to push a second workpiece to abut against the first workpiece.
In the bolt and nut fastening structure, the bolt and nut fastening structure further comprises a first washer, the moving block is further provided with a second plane located on the back face of the second wedge-shaped surface, the moving block is in abutting connection with one face of the first washer through the second plane, and the other face of the first washer is used for being in abutting connection with a second workpiece.
In foretell bolt and nut fastening structure, still include the second fixed block, the second fixed block has third wedge face and third plane, the movable block still has and is located the fourth wedge face at the second wedge face back, the movable block passes through the fourth wedge face with third wedge face is contradicted and is connected, the second fixed block passes through the third plane is contradicted with the second work piece and is connected.
In the bolt and nut fastening structure, the bolt and nut fastening structure further comprises a second washer, the second washer is arranged between the first connecting piece and the first workpiece, and the first connecting piece is connected with the first workpiece in an abutting mode through the second washer.
In the bolt-nut fastening structure, the first connecting piece is a bolt, the second connecting piece is a nut, and the second connecting piece is in threaded connection with the first connecting piece.
In the bolt and nut fastening structure, the moving block is of a U-shaped or concave-shaped structure.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the moving block can push the second workpiece to be abutted against the first workpiece through the abutting connection of the second wedge-shaped surface and the first wedge-shaped surface, so that the second connecting piece has certain pretightening force, a wrench is not needed to be used for rotating operation around the axis of the bolt, and only a space for knocking is reserved along the radial direction of the bolt and aligned with the wedge-shaped block.
2. The first fixing block is arranged to be in abutting connection with the second wedge-shaped surface of the moving block through the first wedge-shaped surface, so that the moving block can convert the radial force of knocking or pressing into the axial force for pushing the first fixing block and the second workpiece when the moving block is knocked or pressed into the radial direction of the bolt, and the pre-tightening force for fastening the bolt is formed.
3. The moving block is arranged to be of a U-shaped or concave-shaped structure, so that the moving block can surround the first connecting piece in a semi-surrounding mode and is uniformly contacted with the first fixing block.
4. The moving block is connected with the second workpiece in a butting mode through the first gasket, and the surface of the second workpiece is prevented from being crushed by the moving block in the fastening process.
5. The moving block is arranged to be of a trapezoidal structure and is in butt connection with the first fixing block and the second fixing block through the second wedge-shaped surface and the fourth wedge-shaped surface respectively, so that the contact area of the moving block is increased, and the integral fastening structure is firmer.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of another embodiment of the present invention.
Fig. 4 is an exploded view of another embodiment of the present invention.
Fig. 5 is a sectional view of the moving block of the present invention.
Fig. 6 is a plan view of the moving block of the present invention.
Fig. 7 is a cross-sectional view of the first fixing block or the second fixing block of the present invention.
Fig. 8 is a top view of the first fixing block or the second fixing block of the present invention.
Fig. 9 is a cross-sectional view of the first gasket or the second gasket of the present invention.
Fig. 10 is a top view of the first washer or the second washer of the present invention.
In the figure, 100, a first connecting piece; 200. a second connecting member; 300. a first fixed block; 310. a first wedge-shaped face; 320. a first plane; 400. a moving block; 410. a second wedge-shaped face; 420. a second plane; 430. a fourth wedge-shaped surface; 500. a first gasket; 600. a second fixed block; 610. a third wedge face; 620. a third plane; 700. a second gasket; 800. a first workpiece; 900. a second workpiece.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Furthermore, the descriptions in the present application as to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Example one
As shown in fig. 1 to 10, a bolt-and-nut fastening structure includes: the first connecting member 100, the second connecting member 200, the first fixing block 300, and the moving block 400.
The first connecting member 100 is used for abutting against the first workpiece 800, and the first connecting member 100 may be a bolt, or may be an assembly formed by a screw and a nut.
The second connecting member 200 is detachably connected to the first connecting member 100, a fastening space is formed between the second connecting member 200 and the second workpiece 900, and the second connecting member 200 may be a nut.
The first fixing block 300 is disposed in the fastening space, the first fixing block 300 has a first wedge-shaped surface 310 and a first plane 320, and the first fixing block 300 is in interference connection with the second connector 200 through the first plane 320;
when the moving block 400 is located in the fastening space, the moving block 400 has a second wedge surface 410, and when the moving block 400 is located in the fastening space, the moving block 400 is in interference connection with the first wedge surface 310 through the second wedge surface 410, so as to push the second workpiece 900 to abut against the first workpiece 800.
It should be noted here that the first wedge-shaped surface 310 on the first fixed block 300 and the second wedge-shaped surface 410 on the moving block 400 have the same wedge angle, the wedge angle α is determined according to a material static friction factor f of the wedge block, α is smaller than arctg (f), and a certain guarantee coefficient is reserved to ensure that the moving wedge block has a self-locking function after being driven in and cannot slide out.
Preferably, the optional α is 2 ° to 5 °.
Preferably, the first connector 100 is configured as a bolt, the second connector 200 is configured as a nut, and the second connector 200 is in threaded connection with the first connector 100.
In this embodiment, the moving block 400 may be abutted against the first wedge surface 310 through the second wedge surface 410 to push the second workpiece 900 to abut against the first workpiece 800, so that the second connecting member 200 has a certain pre-tightening force, and thus, a wrench is not required to rotate around the axis of the bolt, and only a space for knocking needs to be reserved along the radial direction of the bolt and aligned with the wedge block.
In this embodiment, the first fixing block 300 is provided to be in contact with the second wedge surface 410 of the moving block 400 through the first wedge surface 310, so that when the moving block 400 is knocked in or pushed in along the radial direction of the bolt and aligned with the wedge surface, the radial force of knocking in or pushing in is converted into the axial force for pushing the first fixing block 300 and the second workpiece 900, thereby forming the pre-tightening force for fastening the bolt.
As shown in fig. 1 and 2, in addition to the above embodiment, the moving block 400 further includes a first washer 500, the moving block 400 further includes a second flat surface 420 located on a back surface of the second wedge surface 410, the moving block 400 is in interference connection with one surface of the first washer 500 through the second flat surface 420, and the other surface of the first washer 500 is in interference connection with a second workpiece 900.
In this embodiment, the moving block 400 is in interference contact with the second workpiece 900 through the first washer 500, so that the moving block 400 is prevented from crushing the surface of the second workpiece 900 during the fastening process.
As shown in fig. 1, 2, 3, 4, 9, and 10, in addition to the above embodiments, the present invention further includes a second washer 700, where the second washer 700 is disposed between the first connecting member 100 and the first workpiece 800, and the first connecting member 100 is in interference connection with the first workpiece 800 through the second washer 700.
In this embodiment, the first connecting member 100 is in interference connection with the first workpiece 800 through the second washer 700, so as to prevent the first connecting member 100 from crushing the surface of the first workpiece 800 during the fastening process.
As shown in fig. 1, 2, 3, 4, 5 and 6, in addition to the above-described embodiments, the moving block 400 has a U-shaped or concave-shaped structure.
In the present embodiment, the moving block 400 is provided in a U-shaped or concave-shaped structure, so that the moving block 400 may surround the first connecting member 100 in a semi-surrounding shape to uniformly contact the first fixing block 300.
Example two
As shown in fig. 3 and 4, the second embodiment has the same structure as the first embodiment, except that a second fixing block 600 is used instead of the first washer 500.
Specifically, on the basis of the above embodiment, the present invention further includes a second fixed block 600, the second fixed block 600 has a third wedge surface 610 and a third plane 620, the moving block 400 further has a fourth wedge surface 430 located on the back of the second wedge surface 410, the moving block 400 is in interference connection with the third wedge surface 610 through the fourth wedge surface 430, and the second fixed block 600 is in interference connection with a second workpiece 900 through the third plane 620.
In this embodiment, the moving block 400 is formed in a trapezoidal structure, and the moving block 400 is connected to the first fixing block 300 and the second fixing block 600 through the second wedge-shaped surface 410 and the fourth wedge-shaped surface 430, respectively, so that the contact area of the moving block 400 is increased, and the overall fastening structure is more reliable.
Claims (6)
1. A bolt-nut fastening structure characterized by comprising:
the first connecting piece is used for abutting connection with a first workpiece;
the second connecting piece is detachably connected with the first connecting piece, and a fastening space is formed between the second connecting piece and a second workpiece;
the first fixing block is arranged in the fastening space and is provided with a first wedge-shaped surface and a first plane, and the first fixing block is in abutting connection with the second connecting piece through the first plane;
the moving block is capable of moving into the fastening space and provided with a second wedge-shaped surface, and when the moving block is located in the fastening space, the moving block is in abutting connection with the first wedge-shaped surface through the second wedge-shaped surface so as to push a second workpiece to abut against the first workpiece.
2. A bolt-and-nut fastening structure as defined in claim 1, wherein: the moving block is provided with a second plane positioned on the back surface of the second wedge-shaped surface, the moving block is connected with one surface of the first washer in an abutting mode through the second plane, and the other surface of the first washer is used for being connected with a second workpiece in an abutting mode.
3. A bolt and nut fastening structure according to claim 1, wherein: the movable block is provided with a third wedge-shaped surface and a third plane, the movable block is further provided with a fourth wedge-shaped surface located on the back of the second wedge-shaped surface, the movable block is in butt joint with the third wedge-shaped surface through the fourth wedge-shaped surface, and the second fixed block is in butt joint with a second workpiece through the third plane.
4. A bolt-and-nut fastening structure as defined in claim 2 or 3, wherein: the workpiece connecting device is characterized by further comprising a second gasket, wherein the second gasket is arranged between the first connecting piece and the first workpiece, and the first connecting piece is connected with the first workpiece in an abutting mode through the second gasket.
5. A bolt-and-nut fastening structure as defined in claim 4, wherein: the first connecting piece is set to be a bolt, the second connecting piece is set to be a nut, and the second connecting piece is in threaded connection with the first connecting piece.
6. A bolt and nut fastening structure according to claim 5, wherein: the moving blocks are arranged into U-shaped or concave-shaped structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221247707.9U CN217814323U (en) | 2022-05-19 | 2022-05-19 | Bolt and nut fastening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221247707.9U CN217814323U (en) | 2022-05-19 | 2022-05-19 | Bolt and nut fastening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217814323U true CN217814323U (en) | 2022-11-15 |
Family
ID=83986478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221247707.9U Active CN217814323U (en) | 2022-05-19 | 2022-05-19 | Bolt and nut fastening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217814323U (en) |
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2022
- 2022-05-19 CN CN202221247707.9U patent/CN217814323U/en active Active
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