CN213039643U

CN213039643U - Anti-drop's fastener

Info

Publication number: CN213039643U
Application number: CN202021788845.9U
Authority: CN
Inventors: 钱成森
Original assignee: Zhejiang Qiangli Fastener Co ltd
Current assignee: Zhejiang Qiangli Fastener Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-23
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses an anti-drop's fastener, including the screw rod with set up in the nut of screw rod up end, the cavity has been seted up to the inside of screw rod, the lateral wall of screw rod seted up a plurality of with the mounting hole that the cavity is linked together, it is a plurality of the mounting hole is followed the circumferencial direction evenly distributed of screw rod, every equal horizontal sliding connection has the piece of stiching in the mounting hole, and is a plurality of the tip that the piece of stiching was kept away from each other is used for imbedding between two adjacent threads of spare part, be provided with in the cavity and be used for driving a plurality of the actuating mechanism that the piece of stiching. Through setting up the tight piece that supports between two adjacent threads that can imbed into spare part, realize that the position of screw rod axial direction is injectd, effectively alleviate the torsion decline problem of bolt to improve the screw rod prevent moving back the effect, and then have the problem that prevents the bolt and break away from.

Description

Anti-drop's fastener

Technical Field

The utility model relates to a fastener field, in particular to anti-drop's fastener.

Background

Fasteners, also known as standards, are a general term for a class of mechanical parts used to fasten two or more parts together as a unit. The fasteners mainly comprise screws, bolts, nuts, rivets and the like.

In the use process of the traditional bolt, the threads of the bolt are matched with the parts, so that the parts are fixed. However, when the bolt is used for a long time, the bolt can generate torsion recession, so that the situation that the nut drives the screw rod to rotate is easily caused, the connection stability of the bolt and parts is affected, and the bolt is easy to fall off.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti-drop's fastener has the effect that prevents the bolt and drop.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an anti-drop's fastener, include the screw rod and set up in the nut of screw rod up end, the cavity has been seted up to the inside of screw rod, the lateral wall of screw rod seted up a plurality of with the mounting hole that the cavity is linked together, it is a plurality of the mounting hole is followed the circumferencial direction evenly distributed of screw rod, every equal horizontal sliding connection has the piece of keeping tight in the mounting hole, and is a plurality of the tip that the piece of keeping away from each other that keeps tight is used for imbedding between two adjacent threads of spare part, be provided with in the cavity and be used for driving a plurality of the actuating mechanism that.

Through adopting above-mentioned technical scheme, accomplish the cooperation back when screw rod and spare part, stretch out from the cavity through a plurality of tight pieces of actuating mechanism drive. And then, the abutting sheets are embedded between two adjacent threads of the part, so that the position limitation of the axial direction of the screw rod is realized. Effectively alleviate the torsion decline problem of bolt to improve the effect of preventing moving back of screw rod, and then have the problem that prevents the bolt and break away from.

The utility model discloses a further set up to: the actuating mechanism include with the vertical sliding connection's of cavity actuating lever, the lower extreme tip of actuating lever is provided with the drive block, the drive block is the round platform form setting that the lower extreme tip expands outward gradually, the lateral wall all around of drive block is used for conflicting a plurality of support the tip that the grip piece is close to each other, be provided with on the nut and be used for the drive the vertical control mechanism who upwards slides of actuating lever.

By adopting the technical scheme, after the screw rod is matched with the part, the driving rod and the driving block are driven by the control mechanism to vertically move upwards. At the moment, a plurality of abutting sheets extend out of the cavity under the interference of the side wall of the driving block. Through setting up simple structure, easy and simple to handle, the stable actuating mechanism of drive effect for a plurality of piece of supporting can stretch out from the cavity in step and fast, thereby improve the efficiency when carrying out axial fixity to the screw rod.

The utility model discloses a further set up to: the cover is equipped with the gasket on the screw rod, the lower terminal surface of nut has been seted up and has been located holding tank directly over the cavity, the upper end tip of actuating lever runs through the upper end inner wall of cavity and with the screw rod forms vertical sliding connection, control mechanism include with the vertical sliding connection's of holding tank control lever, the upper end tip of actuating lever extends to in the holding tank and with control lever fixed connection, the up end of gasket is provided with the control ring, the control ring is used for contradicting the lower terminal surface of control lever, the lower terminal surface of nut seted up with the holding tank is linked together and supplies the annular control tank of control ring embedding.

Through adopting above-mentioned technical scheme, the in-process that the bolt was assembled, the nut contradicts the gasket gradually. At this time, the control ring abuts against the control rod and pushes the control rod to move vertically upwards. Then, the driving rod and the driving block are controlled to move synchronously. Meanwhile, the plurality of abutting sheets extend out of the cavity under the abutting of the side wall of the driving block. Until the abutting piece is embedded between two adjacent threads of the part, the screw cap abuts against the gasket, and the control ring is completely embedded into the control groove. At this time, the position limitation of the screw in the axial direction can be realized. Through setting up simple structure, stable, the strong control mechanism of linkage of drive effect, realize the quick adjustment of drive block position. Make a plurality of support tight piece can be quick imbed to between the two adjacent threads of spare part to efficiency when further improving the screw and carrying out axial fixity.

The utility model discloses a further set up to: the end parts of the abutting pieces, which are close to each other, are arc-shaped with the middle parts protruding outwards.

Through adopting above-mentioned technical scheme, because the tip that a plurality of support tight piece are close to each other all is circular-arc setting, has good guide effect for support tight piece can be quick, steady motion under the driving block supports. Thereby make to support between tight piece can imbed two adjacent threads of spare part fast, and then improve the work efficiency when carrying out axial fixity to the screw rod.

The utility model discloses a further set up to: the end parts of the plurality of abutting pieces, which are close to each other, are provided with limiting rings, and each port of one end of the mounting hole, which deviates from the cavity, is bent inwards to form a flanging which is abutted by the corresponding limiting rings.

Through adopting above-mentioned technical scheme, through mutually supporting of spacing ring and turn-ups, realize supporting the injecing of the maximum extension distance of tight piece. The in-process that prevents the user and take the bolt, supports the piece and deviate from the mounting hole, and then improves the stability in use of bolt.

The utility model discloses a further set up to: and a plurality of elastic anti-skidding blocks are uniformly distributed on the lower end surface of the gasket.

Through adopting above-mentioned technical scheme, through setting up the non slipping spur, increase the frictional force between gasket and the spare part to improve the stability of being connected between gasket and the spare part. Simultaneously, the non-slip block can also effectively prevent the gasket fish tail spare part, has good protection effect to the spare part.

The utility model discloses a further set up to: the upper end face of the nut is provided with a abdicating groove for the socket wrench to be inserted and embedded.

Through adopting above-mentioned technical scheme, through setting up the groove of stepping down, the user can utilize hexagon socket head wrench to install the bolt to improve bolt mounting tool's suitability, and then improve the practicality of bolt.

To sum up, the utility model discloses following beneficial effect has:

1. through the arrangement of the abutting piece which can be embedded between two adjacent threads of the part, the position limitation of the screw in the axial direction is realized, the problem of torque force recession of the bolt is effectively relieved, the recession prevention effect of the screw is improved, and the problem of bolt disengagement is further solved;

2. through the arrangement of the driving mechanism which is simple in structure, simple and convenient to operate and stable in driving effect, the plurality of abutting pieces can synchronously and quickly extend out of the cavity, so that the efficiency of fixing the screw rod is improved;

3. through the arrangement of the control mechanism with simple structure, stable driving effect and strong linkage, the position of the driving block can be quickly adjusted, so that the plurality of abutting pieces can be quickly embedded between two adjacent threads of the part, and the efficiency of axially fixing the screw rod is further improved;

4. through setting up the non slipping spur, increase the frictional force between gasket and the spare part to improve the stability of being connected between gasket and the spare part.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

fig. 2 is a sectional view of the present embodiment.

Reference numerals: 1. a screw; 2. a nut; 3. a yielding groove; 4. a gasket; 5. anti-skid blocks; 6. a cavity; 7. mounting holes; 8. a propping sheet; 9. a drive mechanism; 91. a drive rod; 92. a drive block; 10. a limiting ring; 11. flanging; 12. a control mechanism; 121. a control lever; 122. a control loop; 13. accommodating grooves; 14. and (4) controlling the groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, an anti-drop fastener comprises a screw rod 1 and a nut 2 horizontally and fixedly connected to the upper end surface of the screw rod 1, wherein a abdicating groove 3 for inserting an inner hexagonal wrench is formed in the upper end surface of the nut 2. The upper end part of the screw rod 1 is sleeved with a gasket 4, and a plurality of rubber anti-skidding blocks 5 are uniformly distributed on the lower end surface of the gasket 4.

When the above-mentioned assembling bolt is installed, the screw 1 is aligned with the installation position of the component. Then the inner hexagonal wrench is inserted into the abdicating groove 3 or the outer hexagonal wrench is sleeved on the screw cap 2. Then the inner hexagonal wrench or the outer hexagonal wrench is rotated to drive the nut 2 to drive the screw rod 1 to rotate synchronously, so that the screw rod 1 is matched with the parts.

Referring to fig. 2, a cavity 6 is vertically formed in the screw rod 1, a plurality of mounting holes 7 communicated with the cavity 6 are formed in the side wall of the screw rod 1, and the mounting holes 7 are uniformly distributed along the circumferential direction of the screw rod 1. Meanwhile, an iron abutting sheet 8 is horizontally connected in each mounting hole 7 in a sliding manner.

Referring to fig. 2, the end portions of the plurality of abutting pieces 8, which are far away from each other, are used for being embedded between two adjacent threads of the component, and a driving mechanism 9 for driving the plurality of abutting pieces 8 to be far away from each other is fixedly connected in the cavity 6.

After the screw 1 is matched with the parts, the plurality of abutting sheets 8 are driven to extend out of the cavity 6 through the driving mechanism 9. Subsequently, the abutting piece 8 is inserted between two adjacent threads of the component, thereby achieving the position limitation of the screw 1 in the axial direction.

Referring to fig. 2, the driving mechanism 9 includes a driving rod 91 vertically slidably connected to the cavity 6, a driving block 92 is fixedly connected to a lower end of the driving rod 91, and the driving block 92 is disposed in a circular truncated cone shape with a gradually expanding lower end. Meanwhile, the peripheral side wall of the driving block 92 is used for abutting against the end parts of the plurality of abutting sheets 8 which are close to each other.

Referring to fig. 2, the end portions of the plurality of abutting pieces 8 close to each other are arc-shaped, and the middle portions of the arc-shaped abutting pieces protrude outwards. The end parts of the plurality of abutting pieces 8, which are close to each other, are provided with limiting rings 10, and the port of one end of each mounting hole 7, which is far away from the cavity 6, is bent inwards to form a flanging 11 for abutting against the corresponding limiting ring 10. Meanwhile, the nut 2 is provided with a control mechanism 12 for driving the driving rod 91 to slide vertically upward.

After the screw 1 is matched with the component, the driving rod 91 and the driving block 92 are driven by the control mechanism 12 to move vertically upwards. At this point, the tabs 8 protrude from the cavity 6 against the side walls of the block 92. Until the abutting sheet 8 is embedded between two adjacent threads of the component, the screw 1 is fixed.

Referring to fig. 2, the lower end surface of the nut 2 is provided with a strip-shaped accommodating groove 13 located right above the cavity 6, and the control mechanism 12 includes a control rod 121 vertically and slidably connected with the accommodating groove 13. The upper end surface of the spacer 4 is provided with a control ring 122 for abutting against the lower end surface of the control rod 121.

Referring to fig. 2, the lower end surface of the nut 2 is provided with an annular control groove 14 communicating with the receiving groove 13 and into which the control ring 122 is inserted. The upper end of the driving rod 91 penetrates the inner wall of the upper end of the cavity 6 and is vertically connected with the screw 1 in a sliding manner, and meanwhile, the upper end of the driving rod 91 extends into the accommodating groove 13 and is fixedly connected with the control rod 121.

During the assembly of the bolt, the nut 2 is gradually pressed against the washer 4. At this time, the control ring 122 interferes with the control rod 121 and pushes the control rod 121 to move vertically upward along the control slot 14. Subsequently, the control lever 121 moves the driving lever 91 and the driving block 92 vertically upward.

At the same time, the plurality of abutting pieces 8 horizontally slide along the mounting holes 7 under the interference of the side walls of the driving block 92, and the abutting pieces 8 gradually protrude from the cavity 6. Subsequently, the abutting piece 8 is gradually inserted between two adjacent threads of the component part.

When the abutting piece 8 is completely inserted between two adjacent threads of the component, the nut 2 abuts against the washer 4, and the control ring 122 is completely inserted into the control groove 14. At this time, the position limitation of the screw 1 in the axial direction can be achieved.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides an anti-drop's fastener, includes screw rod (1) and set up in nut (2) of screw rod (1) up end, its characterized in that: cavity (6) have been seted up to the inside of screw rod (1), the lateral wall of screw rod (1) seted up a plurality of with mounting hole (7) that cavity (6) are linked together, it is a plurality of mounting hole (7) are followed the circumferencial direction evenly distributed of screw rod (1), every equal horizontal sliding connection has the piece of keeping close (8), a plurality of the tip that keeps away from each other of piece of keeping close (8) is used for imbedding between two adjacent threads of spare part, be provided with in cavity (6) and be used for driving a plurality of the actuating mechanism (9) that keep away from each other of piece of keeping close (8).

2. A drop-resistant fastener as claimed in claim 1, wherein: actuating mechanism (9) include with the vertical sliding connection's of cavity (6) actuating lever (91), the lower extreme tip of actuating lever (91) is provided with drive block (92), drive block (92) are the outer round platform form setting that expands of lower extreme tip gradually, the lateral wall all around of drive block (92) is used for a plurality of conflict the tip that sticiss piece (8) are close to each other, be provided with on nut (2) and be used for the drive actuating lever (91) vertical control mechanism (12) that upwards slides.

3. A drop-resistant fastener as claimed in claim 2, wherein: a gasket (4) is sleeved on the screw rod (1), a containing groove (13) positioned right above the cavity (6) is arranged on the lower end surface of the screw cap (2), the upper end part of the driving rod (91) penetrates through the inner wall of the upper end of the cavity (6) and is vertically connected with the screw rod (1) in a sliding manner, the control mechanism (12) comprises a control rod (121) which is vertically and slidably connected with the accommodating groove (13), the upper end part of the driving rod (91) extends into the accommodating groove (13) and is fixedly connected with the control rod (121), the upper end surface of the gasket (4) is provided with a control ring (122), the control ring (122) is used for abutting against the lower end surface of the control rod (121), the lower end face of the nut (2) is provided with an annular control groove (14) which is communicated with the accommodating groove (13) and is used for embedding the control ring (122).

4. A drop-resistant fastener as claimed in claim 3, wherein: the end parts of the plurality of abutting sheets (8) which are close to each other are all arc-shaped with the middle parts protruding outwards.

5. A drop-resistant fastener as claimed in claim 4, wherein: the end parts of the abutting sheets (8) close to each other are provided with limiting rings (10), and each mounting hole (7) deviates from the port at one end of the cavity (6) and is bent inwards to form a flange (11) for the corresponding abutting of the limiting rings (10).

6. A drop-resistant fastener as claimed in claim 3, wherein: and a plurality of elastic anti-skidding blocks (5) are uniformly distributed on the lower end surface of the gasket (4).

7. A drop-resistant fastener as claimed in claim 6, wherein: the upper end face of the nut (2) is provided with a receding groove (3) for inserting and embedding an inner hexagonal wrench.