Anti-falling fastener

Abstract

The utility model discloses an anti-drop fastener, which relates to the field of fasteners, and comprises a bolt main body, the outer ring of the screw part of the bolt main body is in threaded connection with a hexagonal nut main body, and the outer wall of the nut main body is movably provided with a mounting gasket in a fitting manner. When the nut body is twisted, the mounting gasket movably connected with the nut body is driven to move to synchronously leave the screw part of the bolt body, so that the bolt body and the nut body are conveniently used as fasteners to connect and fasten a pipeline and an equipment interface subsequently; meanwhile, the mounting gasket is shifted in the direction away from the nut body, the clamping block movably connected in the mounting gasket is stressed to move away from the mounting groove, and then the mounting gasket can be separated from the nut body, so that subsequent use of a single part is facilitated; furthermore, the mounting gasket is movably connected with the nut main body, so that the mounting gasket is matched with the nut main body, and the poor use effect of the whole fastener caused by loss of the mounting gasket is avoided.

Description

Technical Field

[0001] The utility model relates to the field of fasteners, in particular to an anti-falling fastener. Background Art

[0002] Fasteners are commonly seen as common parts in construction operations. As the name suggests, fasteners are parts used to fasten two or more parts into a whole. When installing pipelines and equipment, it is necessary to use threaded connections of fastening bolts and nuts to achieve connection of pipelines and flanges of equipment connection ports, so as to ensure the subsequent normal use of the equipment and the pipelines connected to the equipment.

[0003] The existing bolts and nuts still have the following problems when in use: When the bolts and nuts in the fasteners are connected, gaskets are required. The gaskets are parts between the connected parts and the nuts, generally flat metal rings, used to protect the surface of the connected parts from being torsionally scratched by the nut and to disperse the pressure of the nut on the connected parts. However, the gaskets and unused bolts or nuts are all dispersedly arranged, and the gaskets are small in size, which makes them easier to scatter, affecting the tightness of the subsequent bolts, nuts and connecting parts.

[0004] Therefore, it is necessary to invent an anti-falling fastener to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-dropping fastener to solve the problem that a gasket is needed when connecting the bolt and nut in the fastener proposed in the above background technology. The gasket is a part between the connected part and the nut, generally a flat metal ring, which is used to protect the surface of the connected part from being scratched by the nut torsion and to disperse the pressure of the nut on the connected part. However, the gasket and the unused bolts or nuts are all dispersedly arranged, and the gasket is small in size, which makes the gasket easier to scatter, affecting the tightness of the subsequent bolt, nut and connecting part connection.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-falling fastener comprises a bolt body, the outer ring of the screw part of the bolt body is threadedly connected with a hexagonal nut body, the outer wall of the nut body is movably and fitly installed with a mounting gasket to ensure the normal use of the fastener, a movable notch is opened inside the mounting gasket, the upper end of the locking block is movably connected inside the movable notch, the side wall of the locking block is fixedly connected with a limiting block, the limiting block moves inside the movable groove, the movable groove and the movable notch are connected to each other, the inner wall of the movable notch is fixedly connected with a plastic elastic block, the other end of the plastic elastic block is fixedly connected to the locking block, the lower end of the locking block moves inside the mounting groove, and the mounting groove is arranged inside the nut body to ensure the connection between the mounting gasket and the nut body and subsequent disassembly and replacement.

[0007] Preferably, there are two movable notches, and the two movable notches are symmetrically arranged with reference to the central axis of the circular mounting gasket as the axis of symmetry, so that the two symmetrical locking blocks movably connected inside the two symmetrical movable notches can be movably connected to the nut body, which ensures the stability of the connection between the mounting gasket and the nut body and facilitates the installation and replacement of the mounting gasket and the nut body.

[0008] Preferably, the locking block is "L"-shaped, and two symmetrically arranged locking blocks are symmetrically installed inside the two movable notches. The top of the locking block is flush with the top wall of the mounting gasket away from the nut body, thereby avoiding the protrusion of the upper end of the locking block affecting the subsequent use of the entire fastener.

[0009] Preferably, the two limit blocks fixedly connected on both sides of the locking block are symmetrically arranged with reference to the vertical center axis of the locking block as the symmetry axis, and the outer wall of the limit block is in contact with and slidably connected to the inner wall of the movable groove to ensure that the locking block can move stably inside the movable notch.

[0010] Preferably, the top and bottom of the lower end of the locking block are provided with inclined surfaces, and the inclined surfaces are in fit with the curvature of the arc-shaped edge set inside the notch of the installation groove. The interior of the installation groove has sufficient space for the locking block to move, and the side wall of the horizontal body block at the lower end of the "L"-shaped locking block is an arc-shaped surface. The inclined surface set at the lower end of the locking block is hindered by the arc-shaped edge set at the notch of the installation groove during the movement toward the direction of the nut body. At this time, the locking block is forced to move to facilitate the subsequent matching installation of the locking block and the installation groove, thereby ensuring the connection between the installation gasket and the nut body. Similarly, the installation gasket can be directly moved in the direction away from the nut body to complete the separation of the installation gasket and the nut body.

[0011] Preferably, the plastic elastic block is diamond-shaped, and the two ends of the plastic elastic block connected to the locking block and the movable notch are connecting ends, and the connecting ends are smooth surfaces, and the other two symmetrical ends of the plastic elastic block are movable ends, and the movable ends are pointed, and there is a spacing between the movable ends and the side walls of the movable notch, thereby ensuring that the elastic plastic block has appropriate deformation space so that the elastic plastic block can be deformed by subsequent force and reset after losing force.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] The utility model drives the installation gasket movably connected with the nut body to move and synchronously leave the screw rod part of the bolt body when the nut body is twisted, which facilitates the subsequent use of the bolt body and the nut body as fasteners to connect and fasten the pipeline and the equipment interface. At the same time, the installation gasket is pushed in a direction away from the nut body, and the engaging block movably connected inside the installation gasket is forced to move out of the installation groove, so that the installation gasket and the nut body can be separated, so as to facilitate the subsequent use of separate parts. In addition, the installation gasket and the nut body are movably connected to ensure that the installation gasket and the nut body are matched, so as to avoid the loss of the installation gasket resulting in poor use effect of the entire fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 It is an exploded view of the overall structure of the utility model;

[0017] Figure 3 It is a stereoscopic view of the nut body (partially cut away) of the utility model;

[0018] Figure 4 This is an exploded view of the internal structure of the installation gasket (partially cut away) of the utility model;

[0019] Figure 5 It is a three-dimensional diagram of the overall structure of the installation gasket of the utility model.

[0020] Description of reference numerals:

[0021] 1. Bolt body; 2. Nut body; 3. Mounting gasket; 4. Movable notch; 5. Movable groove; 6. Engaging block; 7. Limiting block; 8. Plastic elastic block; 9. Movable end; 10. Connecting end; 11. Mounting groove; 12. Arc surface; 13. Inclined surface. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides Figure 1-5 The anti-falling fastener shown in the figure includes a bolt body 1, the outer ring of the screw part of the bolt body 1 is threadedly connected with a hexagonal nut body 2, the outer wall of the nut body 2 is movably and fitly installed with a mounting gasket 3 to ensure the normal use of the fastener, a movable notch 4 is opened inside the mounting gasket 3, the upper end of the clamping block 6 is movably connected inside the movable notch 4, the side wall of the clamping block 6 is fixedly connected with a limiting block 7, the limiting block 7 moves inside the movable groove 5, the movable groove 5 and the movable notch 4 are connected to each other, the inner wall of the movable notch 4 is fixedly connected with a plastic elastic block 8, the other end of the plastic elastic block 8 is fixedly connected to the clamping block 6, the lower end of the clamping block 6 moves inside the mounting groove 11, and the mounting groove 11 is arranged inside the nut body 2 to ensure the connection between the mounting gasket 3 and the nut body 2 and subsequent disassembly and replacement.

[0024] There are two movable notches 4, and the two movable notches 4 are symmetrically arranged with reference to the central axis of the circular mounting gasket 3 as the axis of symmetry, so that the two symmetrical snap-fitting blocks 6 movably connected inside the two symmetrical movable notches 4 can be movably connected to the nut body 2, which ensures the stability of the connection between the mounting gasket 3 and the nut body 2 and also facilitates the installation and replacement of the mounting gasket 3 and the nut body 2.

[0025] The snap-fit ​​block 6 is in an "L" shape, and two symmetrically arranged snap-fit ​​blocks 6 are symmetrically installed inside the two movable notches 4. The top of the snap-fit ​​block 6 is flush with the top wall of the mounting gasket 3 away from the nut body 2, thereby avoiding the protrusion of the upper end of the snap-fit ​​block 6 affecting the subsequent use of the entire fastener.

[0026] The two limit blocks 7 fixedly connected on both sides of the locking block 6 are symmetrically arranged with reference to the vertical center axis of the locking block 6 as the symmetry axis. The outer wall of the limit block 7 is in contact with the inner wall of the movable groove 5 and is slidably connected to ensure that the locking block 6 can move stably inside the movable notch 4.

[0027] The top and bottom of the lower end of the locking block 6 are both provided with inclined surfaces 13, and the inclined surfaces 13 are in line with the curvature of the arc-shaped edge of the inner notch of the mounting groove 11. There is sufficient space for the locking block 6 to move inside the mounting groove 11. The side wall of the horizontal block of the lower end of the "L"-shaped locking block 6 is an arc-shaped surface 12. The inclined surface 13 set at the lower end of the locking block 6 is hindered by the arc-shaped edge of the notch of the mounting groove 11 during the movement toward the direction of the nut body 2. At this time, the locking block 6 is forced to move to facilitate the subsequent matching installation of the locking block 6 and the mounting groove 11, thereby ensuring the connection between the mounting gasket 3 and the nut body 2. Similarly, the mounting gasket 3 can be directly moved in the direction away from the nut body 2 to complete the separation of the mounting gasket 3 and the nut body 2.

[0028] The plastic elastic block 8 is diamond-shaped, and the two ends of the plastic elastic block 8 connected to the locking block 6 and the movable notch 4 are connecting ends 10, and the connecting ends 10 are smooth surfaces. The other two symmetrical ends of the plastic elastic block 8 are movable ends 9, and the movable ends 9 are pointed, and there is a distance between the movable ends 9 and the side walls of the movable notch 4, which ensures that the elastic plastic block 8 has appropriate deformation space so that the elastic plastic block 8 can be deformed by subsequent force and reset after loss of force.

[0029] Working principle: When using an anti-dropping fastener, the mounting gasket 3 can be first matched and installed with the nut body 2, and the inclined surfaces 13 arranged at the lower ends of the two symmetrically arranged snap-fit ​​blocks 6 movably connected inside the mounting gasket 3 and located closer to the bottom are pressed against the arc surface arranged at the notch of the mounting groove 11 in the nut body 2, and the mounting gasket 3 is pressed downward. At this time, the snap-fit ​​block 6 is forced to move downward, and the inclined surface 13 arranged at the lower end of the snap-fit ​​block 6 is hindered by the arc edge arranged at the notch of the mounting groove 11 during the downward movement. At this time, the snap-fit ​​block 6 is forced to move toward the plastic elastic force The block 8 moves in the direction where the clamping block 6 is located, and the clamping block 6 moves and exerts pressure on the plastic elastic block 8 at the same time, and the plastic elastic block 8 is squeezed into a flat shape, which facilitates the clamping block 6 to move into the installation groove 11. After the clamping block 6 enters the installation groove 11, there is a space in the installation groove 11 that completely matches the "L"-shaped lower end of the clamping block 6. At this time, under the elastic force of the plastic elastic block 8, the "L"-shaped lower end of the clamping block 6 completely matches the installation groove 11, thus completing the matching installation of the installation gasket 3 and the nut body 2, and subsequently preventing the installation gasket 3 from falling off during the entire fastener disassembly and assembly process;

[0030] Subsequently, the bolt body 1 and the nut body 2 are used as fasteners to connect and fasten the pipeline and the equipment interface. The twisting of the nut body 2 can synchronously drive the movement of the installation gasket 3. The side of the installation gasket 3 that contacts the connected part is provided with a velvet surface, which ensures a better fastening effect of the fastener.

[0031] When removing the nut body 2, push the installation gasket 3 in the direction away from the nut body 2, and the snap-fit ​​block 6 movably connected inside the installation gasket 3 moves out of the installation groove 11 under the force, so that the installation gasket 3 can be separated from the nut body 2 for the subsequent use of the individual parts.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An anti-drop fastener, comprising a bolt body (1), characterized in that: The outer ring of the screw rod portion of the bolt body (1) is threadedly connected to a hexagonal nut body (2); the outer wall of the nut body (2) is movably and closely mounted with a mounting gasket (3); a movable notch (4) is provided inside the mounting gasket (3); the upper end of a locking block (6) is movably connected inside the movable notch (4); a limiting block (7) is fixedly connected to the side wall of the locking block (6); the limiting block (7) moves inside a movable groove (5); the movable groove (5) and the movable notch (4) are communicated with each other; a plastic elastic block (8) is fixedly connected to the inner wall of the movable notch (4); the other end of the plastic elastic block (8) is fixedly connected to the locking block (6); the lower end of the locking block (6) moves inside a mounting groove (11); and the mounting groove (11) is arranged inside the nut body (2).

2. The anti-drop fastener according to claim 1, characterized in that: The movable notches (4) are arranged at two locations in number, and the two movable notches (4) are arranged symmetrically with respect to each other with reference to the central axis of the circular mounting gasket (3) as the axis of symmetry.

3. The anti-drop fastener according to claim 1, characterized in that: The snap-fit ​​block (6) is in an "L" shape, and two snap-fit ​​blocks (6) are symmetrically installed inside the two movable notches (4), and the top of the snap-fit ​​block (6) is flush with the top wall of the installation gasket (3) away from the nut body (2).

4. The anti-drop fastener according to claim 3, characterized in that: The two limit blocks (7) fixedly connected on both sides of the locking block (6) are symmetrically arranged with reference to the vertical central axis of the locking block (6) as a symmetry axis, and the outer wall of the limit block (7) is in contact with and slidably connected to the inner wall of the movable channel (5).

5. The anti-drop fastener according to claim 4, characterized in that: The top and bottom of the lower end of the locking block (6) are both provided with inclined surfaces (13), and the inclined surfaces (13) are in contact with the curvature of the arc-shaped edge provided inside the slot of the installation slot (11). The interior of the installation slot (11) has sufficient space for the locking block (6) to move, and the side wall of the horizontal body block at the lower end of the "L"-shaped locking block (6) is an arc-shaped surface (12).

6. The anti-drop fastener according to claim 1, characterized in that: The plastic elastic block (8) is in a rhombus shape. The two ends of the plastic elastic block (8) connected to the locking block (6) and the movable notch (4) are connecting ends (10), and the connecting ends (10) are smooth surfaces. The other two symmetrical ends of the plastic elastic block (8) are movable ends (9), and the movable ends (9) are in a pointed shape, and there is a spacing between the movable ends (9) and the side walls of the movable notch (4).

Images