CN216895296U - Combined bolt fastener - Google Patents

Abstract

The utility model provides a combined bolt fastener, which comprises a screw, a screw head and a gasket, wherein the screw and the screw head are arranged in a cylindrical structure, one end of the screw is connected with the screw head, the middle part of the gasket is provided with a first through hole in a penetrating way, the gasket is sleeved outside the screw through the first through hole, the outer wall of one side of the screw, which is far away from the screw head, is provided with a fastening limiting thread, the outer wall of one side of the gasket, which is close to the screw head, is provided with a first chamfer surface, the outer wall of one side of the first through hole, which is close to the screw head, is provided with a second chamfer surface, the outer walls of the screw, the screw head and the gasket are plated with an oxide layer, the fastening limiting thread is connected with a nut to fasten an object and simultaneously, the fastening limiting thread limits the gasket on the other hand, the gasket is prevented from falling off from the screw during installation and use and being lost, the first chamfer surface and the second chamfer surface distinguish the gasket surface from the screw head, and the gasket surface is convenient to distinguish and use, the oxide layer is used for isolating air, so that the rust prevention purpose is achieved, the service time of the bolt is prolonged, and the replacement cost is saved.

Description

Combined bolt fastener

Technical Field

The utility model mainly relates to the technical field of bolts, in particular to a combined bolt fastener.

Background

The motorcycle, two-wheeled or tricycle driven by gasoline engine and steering by front wheel operated by hand, is light and flexible, can run quickly, and can be extensively used for patrol, passenger and goods transportation, etc. and also can be used as sports equipment. In motorcycle applications, it is common to use bolt elements for the attachment of objects, the bolts being mechanical elements, cylindrical threaded fasteners fitted with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.

The motorcycle can produce vibrations in service, in order to prevent that the bolt from producing not hard up when vibrations, the bolt often matches the packing ring and uses, the packing ring can increase the contact surface, and coefficient of friction is stabilized, prevents to take place between bolt and the link not hard up, and current packing ring overlaps on the screw rod, because there is not the restriction, the condition of droing can appear in the packing ring during installation use, loses easily, uses inconveniently, and current packing ring does not have the chamfer face, can not distinguish the installation face easily, uses inconveniently.

SUMMERY OF THE UTILITY MODEL

The present invention provides a combined bolt fastener to solve the above technical problems in the background art.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a combined bolt fastener comprises a screw rod, a screw head and a gasket, wherein the screw rod and the screw head are arranged in a cylindrical structure, one end of the screw rod is connected with the screw head, a first through hole is formed in the middle of the gasket in a penetrating mode, the gasket is sleeved outside the screw rod through the first through hole, a fastening limiting thread is arranged on the outer wall of one side, away from the screw head, of the screw rod, a first chamfering surface is arranged on the outer wall of one side, close to the screw head, of the gasket, a second chamfering surface is arranged on the outer wall, close to one side of the screw head, of the first through hole, an oxide layer is plated on the outer walls of the screw rod, the screw head and the gasket, on one hand, the fastening limiting thread is connected with a nut to fasten an object, on the other hand, the fastening limiting thread limits the gasket, the gasket is prevented from falling off from the screw rod when the bolt fastener is installed and used, and is prevented from being lost, and the gasket surface is distinguished by the first chamfering surface and the second chamfering surface, the washer is convenient to use, the oxide layer is used for isolating air, the anti-rust purpose is achieved, the service time of the bolt is prolonged, and the replacement cost is saved.

Furthermore, the diameter of the first through hole is larger than that of the screw rod, the diameter of the first through hole is smaller than that of the fastening limiting thread, the gasket is sleeved outside the screw rod, the diameter of the fastening limiting thread is larger than that of the first through hole in the middle of the gasket, the gasket is limited, the gasket is prevented from falling off from the screw rod, and the gasket is convenient to install and use.

Furthermore, the screw head is kept away from screw rod one end and has been seted up interior hexagonal fastening recess, and interior hexagonal fastening recess facilitates the use, uses manpower sparingly, and the atress is big during the elasticity screw, and the wrench can not the roll-off when adopting the elasticity of hexagonal horizontal pole, and ordinary cross or straight groove then must be from top to bottom the wrench movement again when exerting oneself and come the elasticity, and it is inconvenient to use.

Furthermore, the outer wall of the screw head is provided with a first thread, so that friction is increased, and the use is convenient.

Furthermore, the outer wall of the top of the inner hexagonal fastening groove is provided with a fastening slope surface, and the hexagonal handle can be easily inserted into the inner hexagonal fastening groove through the fastening slope surface.

Further, the diameter of the washer is larger than that of the screw head.

Compared with the prior art, the utility model has the beneficial effects that:

the gasket is simple in structure, the gasket and the bolt are firmly combined, the gasket cannot fall off from the screw, the chamfer surface is convenient to distinguish the gasket and use, the gasket is connected with the nut through the fastening limiting thread on one hand to fasten an object, and on the other hand, the fastening limiting thread limits the gasket on the other hand, so that the gasket is prevented from falling off from the screw and being lost during installation and use, the gasket surface is distinguished by the first chamfer surface and the second chamfer surface, the gasket surface faces the screw head, the gasket is convenient to distinguish and use, the oxide layer is used for isolating air, the anti-rust purpose is achieved, the service time of the bolt is prolonged, and the replacement cost is saved.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

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

FIG. 2 is a schematic view of a gasket construction of the present invention;

FIG. 3 is a schematic view of the head and tightening limit threads of the present invention;

FIG. 4 is a schematic diagram of an oxide layer according to the present invention.

In the figure: 1. a screw; 11. fastening the limiting thread; 2. a screw head; 21. a first thread; 22. an inner hexagonal fastening groove; 221. fastening the slope surface; 3. a gasket; 31. a first through hole; 32. a first chamfer surface; 33. a second chamfer surface; 123. and oxidizing the layer.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1-4, which illustrates a combined bolt fastener, comprising a screw 1, a screw head 2 and a washer 3, wherein the screw 1 and the screw head 2 are all arranged in a cylindrical structure, one end of the screw 1 is connected with the screw head 2 by welding, the middle part of the washer 3 is provided with a first through hole 31 in a through manner, the washer 3 is sleeved outside the screw 1 through the first through hole 31, the diameter of the washer 3 is larger than that of the screw head 2, the outer wall of the screw 1 at the side far away from the screw head 2 is provided with a fastening limiting thread 11, the outer wall of the screw 1 at the side far away from the screw head 2 is fixedly connected with a processed thread blank, so that the fastening limiting thread 11 is connected with the screw 1, the fastening limiting thread 11 limits the washer 3, the outer wall of the washer 3 at the side near the screw head 2 is provided with a first chamfer 32, the outer wall of the first through hole 31 at the side near the screw head 2 is provided with a second chamfer 33, the outer walls of the screw 1, the screw head 2 and the washer 3 are all plated with a layer 123, the diameter of the first through hole 31 is larger than that of the screw rod 1, the diameter of the first through hole 31 is smaller than that of the fastening limiting thread 11, the washer 3 is sleeved outside the screw rod 1, the diameter of the fastening limiting thread 11 is larger than that of the first through hole 31 in the middle of the washer 3, the washer 3 is limited, the washer is prevented from falling off from the screw rod 1, the mounting and the use are convenient, the fastening limiting thread 11 is connected with a nut on the one hand to fasten objects and limit the washer 3 on the other hand, the washer 3 is prevented from falling off from the screw rod 1 in the mounting and the use, the loss is caused, the first chamfer surface 32 and the second chamfer surface 33 distinguish the washer 3 surfaces, the washer 3 surfaces face the screw head 2 conveniently, the distinguishing is convenient, the use is convenient, the oxide layer 123 is used for isolating air, the anti-rust purpose is achieved, the service time of the bolt is prolonged, and the replacement cost is saved.

Please refer to fig. 2 and 3, the end of the screw head 2 away from the screw rod 1 is provided with an inner hexagonal fastening groove 22, the inner hexagonal fastening groove 22 is convenient to use, labor is saved, the screw is stressed greatly when the screw is tightened, the wrench cannot slide out when the hexagonal cross rod is tightened, the common cross or straight groove is required to be pressed by force from top to bottom and then twisted to be tightened, the use is inconvenient, the outer wall of the screw head 2 is provided with a first thread 21, the outer wall of the screw head 2 is fixedly connected with a thread blank of the first thread 21 after being processed, friction is increased, the use is convenient, the outer wall of the top of the inner hexagonal fastening groove 22 is provided with a fastening slope 221, and the hexagonal handle can be easily inserted into the inner hexagonal fastening groove 22 through the fastening slope 221.

The specific operation mode of the utility model is as follows:

one end of the screw 1, which is far away from the screw head 2, penetrates through a first through hole 31 on the gasket 3, which is close to one side of a first chamfer surface 32 and a second chamfer surface 33, so that the gasket 3 is sleeved on the screw 1, the outer wall, which is far away from one side of the screw head 2, of the screw 1 is fixedly connected with a processed thread blank, a fastening limiting thread 11 is connected with the screw 1, one end, which is close to the fastening limiting thread 11, of the screw 1 penetrates through an object to be fastened, the object is fixed through a nut, a hexagonal wrench is inserted into an inner hexagonal fastening groove 22 for tightness adjustment, the fastening limiting thread 11 is connected with the nut to fasten the object and limit the gasket 3 on the other hand, the gasket 3 is prevented from falling off from the screw 1 during installation and use and being lost, the gasket 3 surface is distinguished by the first chamfer surface 32 and the second chamfer surface 33, so that the gasket 3 surface faces towards the screw head 2, the oxide layer 123 is convenient to distinguish and use, so that the purpose of rust prevention is achieved, the service time of the bolt is prolonged, and the replacement cost is saved.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims (6)

1. The utility model provides a combined bolt fastener, includes screw rod (1), spiral shell head (2) and packing ring (3), its characterized in that, screw rod (1) and spiral shell head (2) all are cylindrical structure setting, screw rod (1) one end with spiral shell head (2) are connected, packing ring (3) middle part is link up and has been seted up first through-hole (31), the outside of screw rod (1) is located through first through-hole (31) cover in packing ring (3), spiral shell head (2) one side outer wall is kept away from in screw rod (1) is provided with fastening restriction screw thread (11), packing ring (3) are close to spiral shell head (2) one side outer wall and are equipped with first chamfer face (32), first through-hole (31) are close to spiral shell head (2) one side outer wall and are equipped with second chamfer face (33), screw rod (1), spiral shell head (2) and packing ring (3) outer wall all are plated with oxidation layer (123).

2. The combination bolt fastener according to claim 1, characterized in that the first through hole (31) has a diameter larger than that of the screw (1), and the first through hole (31) has a diameter smaller than that of the fastening limit thread (11).

3. The combined bolt fastener of claim 1, characterized in that the end of the screw head (2) away from the screw rod (1) is provided with a hexagon socket fastening groove (22).

4. The combination bolt fastener according to claim 1, characterized in that the outer wall of the screw head (2) is provided with a first thread (21).

5. The combination bolt fastener of claim 3, wherein the outer wall of the top of the hexagonal socket fastening groove (22) is provided with a fastening slope (221).

6. The combination bolt fastener according to claim 1, characterized in that the washer (3) has a diameter larger than that of the screw head (2).

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