Fastener with double-layer protection function

Abstract

The utility model discloses a fastener with a double-layer protection function, which comprises a hexagonal clamping plate for supporting, alignment slots for positioning are symmetrically arranged on the inner end face of the hexagonal clamping plate, and a protection device is fixedly arranged on the outer end face of the hexagonal clamping plate. By arranging the limiting device and the protection device, protection operation can be conducted on the exterior of the hexagonal clamping plate in all directions, the protection stability of the upper portion of the bolt is effectively improved, and meanwhile the threaded sleeve located at the bottom of the bolt is in detachable threaded connection with the threaded rotating shaft; and the protective property of the threaded sleeve to the exterior of the fixed clamping shaft can be further improved while the threaded sleeve can be conveniently replaced by a subsequent user, so that the service life of the whole bolt is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener equipment, in particular to a fastener with a double-layer protection function. Background Art

[0002] Fasteners are a general term for a type of mechanical parts used to fasten two or more parts into a whole. It is a very widely used type of mechanical parts. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters and supplies. Bolts are one of the most widely used fasteners, which can effectively improve the stability of the connected workpieces.

[0003] However, after the existing bolt fasteners are tightened, they are exposed to the outside for a long time, which makes the protection of the bolt's exterior insufficient. At the same time, when the bolt thread is damaged, it needs to be replaced as a whole, which increases the cost of use. Therefore, there is an urgent need for a fastener with a double-layer protection function to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fastener with a double-layer protection function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a fastener with double-layer protection function, comprising a hexagonal clamping plate for support, a positioning slot for positioning symmetrically provided on the inner end surface of the hexagonal clamping plate, and a protective device fixedly provided on the outer end surface of the hexagonal clamping plate,

[0006] A threaded shaft is fixedly arranged at the center of the lower end surface of the hexagonal clamping plate, and a fixed clamping shaft is fixedly installed at the center of the lower end surface of the threaded shaft. Six groups of guide grooves are equidistantly opened on the outer end surface of the fixed clamping shaft. A limiting device is threadedly connected to the lower end surface of the hexagonal clamping plate through the threaded shaft.

[0007] Preferably, the protective device comprises a metal shell for limiting position, a positioning clamp ring is fixedly provided at the center of the lower end surface of the metal shell, and a protective gasket is provided at the lower end surface of the metal shell near the outside.

[0008] Preferably, the limiting device includes a fixed swivel seat for support, a threaded sleeve is fixedly arranged at the center of the lower end surface of the fixed swivel seat, and six groups of positioning slides are equidistantly arranged on the inner end surface of the threaded sleeve, a limiting clamping shaft is rotatably engaged with the inner end surface of the fixed swivel seat, and a threaded swivel seat is fixedly arranged at the center of the upper end surface of the limiting clamping shaft.

[0009] Preferably, the threaded seat is threadedly connected to the outside of the threaded shaft, so as to facilitate the subsequent quick and convenient disassembly operation of the threaded sleeve.

[0010] Preferably, the positioning slide is adapted to the guide groove, and the threaded sleeve is adapted to the guide groove through the positioning slide and then slidably engaged with the outer end surface of the fixed clamping shaft. The sliding adaptation of the six groups of positioning slides and the guide grooves can effectively ensure the stability of the radial limitation of the threaded sleeve on the outside of the fixed clamping shaft and the stability of the subsequent connection between the threaded sleeve and the external nut.

[0011] Preferably, the material of the protective gasket is rubber, which can effectively increase the friction between the protective gasket and the accessory, thereby improving the stability of the bolt locking the accessory.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model provides a limit device, and the protective device can perform all-round protective operations on the outside of the hexagonal clamping plate, effectively improving the protective stability of the upper part of the bolt. At the same time, the threaded sleeve located at the bottom of the bolt is connected to the threaded shaft through a detachable thread, which can facilitate subsequent users to replace the threaded sleeve while further improving the protectiveness of the threaded sleeve to the outside of the fixed clamping shaft, thereby increasing the overall service life of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a disassembled diagram of the main body of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the main body of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the protective device of the utility model;

[0017] Figure 4 This is a disassembled diagram of the limiting device of the utility model.

[0018] In the figure: 1-protective device, 2-hexagonal clamping plate, 3-threaded rotating shaft, 4-guide sliding groove, 5-limiting device, 6-fixed clamping shaft, 7-alignment slot, 11-metal shell, 12-protective gasket, 13-alignment clamping ring, 51-threaded swivel seat, 52-limiting clamping shaft, 53-fixed swivel seat, 54-threaded sleeve, 55-positioning slide plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides an embodiment: a fastener with double-layer protection function, including a hexagonal clamping plate 2 for support, a positioning slot 7 for positioning is symmetrically opened on the inner end surface of the hexagonal clamping plate 2, and a protective device 1 is fixedly arranged on the outer end surface of the hexagonal clamping plate 2.

[0021] A threaded shaft 3 is fixedly arranged at the center of the lower end surface of the hexagonal clamping plate 2, and a fixed clamping shaft 6 is fixedly installed at the center of the lower end surface of the threaded shaft 3. Six groups of guide grooves 4 are equidistantly provided on the outer end surface of the fixed clamping shaft 6. A limiting device 5 is threadedly connected to the lower end surface of the hexagonal clamping plate 2 through the threaded shaft 3.

[0022] The protection device 1 comprises a metal shell 11 for limiting position. A positioning clamp ring 13 is fixedly arranged at the center of the lower end surface of the metal shell 11 , and a protection gasket 12 is arranged at the lower end surface of the metal shell 11 near the outside.

[0023] The limiting device 5 includes a fixed swivel seat 53 for support, a threaded sleeve 54 is fixedly arranged at the center of the lower end surface of the fixed swivel seat 53, and six groups of positioning slides 55 are equidistantly arranged on the inner end surface of the threaded sleeve 54. A limiting clamping shaft 52 is rotatably engaged with the inner end surface of the fixed swivel seat 53, and a threaded swivel seat 51 is fixedly arranged at the center of the upper end surface of the limiting clamping shaft 52.

[0024] The threaded seat 51 is threadedly connected to the outside of the threaded shaft 3, which facilitates the subsequent quick and convenient disassembly operation of the threaded sleeve 54.

[0025] The positioning slide 55 is adapted to the guide groove 4, and the threaded sleeve 54 is adapted to the guide groove 4 through the positioning slide 55 and then slidably clamped on the outer end surface of the fixed card shaft 6. The sliding adaptation of the six groups of positioning slides 55 and the guide groove 4 can effectively ensure the stability of the radial limitation of the threaded sleeve 54 on the outside of the fixed card shaft 6, and the stability of the subsequent connection between the threaded sleeve 54 and the external nut.

[0026] The material of the protective gasket 12 is rubber, which can effectively increase the friction between the protective gasket 12 and the accessory, thereby improving the stability of the bolt locking the accessory.

[0027] Working principle: During use, if it is necessary to limit the accessories to be locked, the user can insert the external tool into the inside of the hexagonal clamp 2, pass the limiting device 5 through the prefabricated hole, and then position the matching nut to the outside of the threaded sleeve 54, and then rotate it to complete the locking of the nut and the threaded sleeve 54. After the locking is completed, the protective washer 12 can be pressed against the outside of the accessory to prevent sliding. At the same time, the metal shell 11 can protect the upper part of the bolt, and the threaded sleeve 54 can protect the bottom of the bolt. If the threaded sleeve 54 is damaged, the user can use an external tool to rotate the threaded seat 51 to separate the threaded seat 51 from the threaded shaft 3. At this time, the threaded sleeve 54 can be detached from the outside of the fixed clamping shaft 6 through the positioning slide plate 55, which is convenient for replacing a new set of threaded sleeves 54.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastener with a double-layer protection function, comprising a hexagonal clamping plate (2) for support, a positioning slot (7) symmetrically provided on the inner end surface of the hexagonal clamping plate (2) for positioning, and a protective device (1) fixedly provided on the outer end surface of the hexagonal clamping plate (2), characterized in that: A threaded rotating shaft (3) is fixedly arranged at the center of the lower end surface of the hexagonal clamping plate (2), and a fixed clamping shaft (6) is fixedly installed at the center of the lower end surface of the threaded rotating shaft (3). Six groups of guide grooves (4) are equidistantly formed on the outer end surface of the fixed clamping shaft (6). The lower end surface of the hexagonal clamping plate (2) is threadedly connected to a limiting device (5) through the threaded rotating shaft (3).

2. A fastener with double-layer protection function according to claim 1, characterized in that: The protective device (1) comprises a metal shell (11) for limiting position, a positioning clamp ring (13) is fixedly arranged at the center of the lower end surface of the metal shell (11), and a protective gasket (12) is arranged near the outer part of the lower end surface of the metal shell (11).

3. A fastener with double-layer protection function according to claim 2, characterized in that: The limiting device (5) comprises a fixed rotating seat (53) for support, a threaded sleeve (54) is fixedly arranged at the center of the lower end surface of the fixed rotating seat (53), and six groups of positioning slide plates (55) are equidistantly arranged on the inner end surface of the threaded sleeve (54), a limiting clamping shaft (52) is rotatably engaged with the inner end surface of the fixed rotating seat (53), and a threaded rotating seat (51) is fixedly arranged at the center of the upper end surface of the limiting clamping shaft (52).

4. A fastener with double-layer protection function according to claim 3, characterized in that: The threaded rotating seat (51) is threadedly connected to the outside of the threaded rotating shaft (3).

5. The fastener with double-layer protection function according to claim 3, characterized in that: The positioning slide plate (55) is matched with the guide slide groove (4), and the threaded sleeve (54) is matched with the guide slide groove (4) through the positioning slide plate (55) and then slidably engaged with the outer end surface of the fixed clamping shaft (6).

6. The fastener with double-layer protection function according to claim 3, characterized in that: The material of the protective gasket (12) is rubber.

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