Double-bolt-head bolt with detachable pointed end

Abstract

The utility model discloses a double-bolt-head bolt with a detachable pointed end, belongs to the technical field of bolts, and solves the problems that when an upper screw and a lower screw are connected with a hexagonal rod through an existing device, the upper screw and the lower screw are inconvenient to drive to rotate, an upper gasket and a lower gasket are exposed outside and are easy to age, and the service life of the upper gasket and the lower gasket is influenced. The device comprises a hexagonal rod, screw rods are arranged at the upper end and the lower end of the hexagonal rod, regular hexagonal grooves are formed in the middles of the end faces of the ends, away from the hexagonal rod, of the screw rods, connecting columns are arranged in the middles of the upper face and the lower face of the hexagonal rod, and threaded holes are formed in the middles of the faces, away from the hexagonal rod, of the connecting columns. Through the arrangement of the hexagonal rod and the regular hexagonal groove, the purpose of conveniently driving the screw rod to rotate is achieved, the protective cover is arranged outside the connecting column in a sleeving mode, the gap between the connecting column and the connecting rod is filled with the elastic sealing ring, and the situation that the aging rate of the annular sealing gasket is increased can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, concretely is a double bolt head bolt of sharp head detachable. BACKGROUND

[0002] Double bolt head bolt, also commonly known as double head screw or double head stud, is a kind of fastener with special structure. It is composed of a threaded rod with threads on both ends and two nuts, and the threads on both ends of the threaded rod can be the same or different, depending on the specific use requirements. Its main function is to connect two different components through the threads on both ends, thereby achieving the fastening and fixing of components.

[0003] Through the search, the application book with patent application number 202221211025.2 discloses a double bolt head bolt with detachable sharp head, relating to the technical field of bolts, to solve the problem that the existing double bolt head bolt encounters when used in non-metallic material installation holes that are too small, requiring additional reaming and being very inconvenient to use. The upper part of the hexagonal rod is provided with an upper threaded rod, which includes an upper threaded segment and an upper smooth rod segment. The upper part of the upper threaded segment is provided with an upper sharp head, and the upper threaded segment and the upper sharp head are arranged as an integral structure. The lower part of the hexagonal rod is provided with a lower threaded rod, which includes a lower smooth rod segment and a lower threaded segment. The lower part of the lower threaded segment is provided with a lower sharp head, and the lower threaded segment and the lower sharp head are arranged as an integral structure. The upper part of the hexagonal rod is provided with a first hexagonal recess;

[0004] Although the double bolt head bolt with detachable sharp head improves the self-tapping drilling capability of the bolt by providing sharp heads on the ends of the upper and lower threaded rods, it is inconvenient to rotate the upper and lower threaded rods when connecting them with the hexagonal rod. Moreover, the upper and lower gaskets are exposed to the external environment for a long time, directly contacting air, water vapor, corrosive media, and other substances, which can accelerate the aging process. After the gaskets age, their elasticity and sealing performance decrease significantly, making it difficult to effectively fill the connection gap and resulting in poor sealing performance.

[0005] Therefore, we propose a double bolt head bolt with detachable sharp head. UTILITY MODEL CONTENTS

[0006] To address the shortcomings of existing technology, the utility model provides a double bolt head bolt with detachable sharp head, solving the problem of existing devices when connecting the upper and lower threaded rods with the hexagonal rod, which is inconvenient to rotate the upper and lower threaded rods, and the upper and lower gaskets are exposed to the external environment, which can easily age and result in poor sealing performance.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a pointed, detachable double-head bolt, comprising a hexagonal rod, with a screw at both the upper and lower ends of the hexagonal rod, a threaded portion at the end of the screw away from the hexagonal rod and a nut threadedly fitted thereon, and a connecting rod portion at the end of the screw near the hexagonal rod;

[0008] A regular hexagonal groove is formed in the middle of the end face of the screw away from the hexagonal rod. A connecting post is provided in the middle of the upper and lower sides of the hexagonal rod. A threaded hole is formed in the middle of the side of the connecting post away from the hexagonal rod. A connecting rod is provided in the middle of the side of the screw near the connecting post. The connecting rod is threaded into the inside of the threaded hole. An annular sealing gasket is provided on the side of the connecting post away from the hexagonal rod. A protective cover is fixedly fitted on the outer surface of the connecting rod. The bottom end of the protective cover extends to the middle of the connecting post. An elastic sealing ring distributed in a linear array is fixedly fitted on the inner wall of the protective cover.

[0009] Preferably, the connecting post, screw, and threaded hole have the same diameter, and the inner diameter of the threaded hole is the same as the inner diameter of the annular sealing gasket. The annular sealing gasket fills the gap between the connecting post and the screw to prevent external rainwater and dirt from entering the interior of the threaded hole, thereby preventing the threaded hole and connecting rod from rusting.

[0010] Preferably, the hexagonal rod and the connecting column are integrally formed, wherein the integrally formed structure is stable and avoids weak links that may occur due to gaps or welding points at the connection parts.

[0011] Preferably, the screw and the connecting rod are integrally formed, wherein the connecting rod facilitates the connection between the screw and the connecting post.

[0012] Preferably, the annular sealing gasket is bonded to the end face of the connecting post away from the hexagonal rod. Both the annular sealing gasket and the elastic sealing ring are made of silicone. The elastic sealing ring can fill the space between the inner wall of the protective cover and the outer surface of the connecting post, thereby increasing the sealing performance of the protective cover and preventing external air, rainwater, and dust from entering the interior of the protective cover. This also prevents the annular sealing gasket from aging too quickly and helps maintain the stability of the connection between the threaded hole and the connecting rod.

[0013] This utility model provides a double-headed bolt with a detachable pointed tip. It has the following advantages:

[0014] This detachable double-head bolt, with its hexagonal rod and regular hexagonal groove, allows the connecting rod to be screwed into the threaded hole using an adjustable wrench and an internal hex wrench, facilitating the rotation of the screw. An annular sealing gasket enhances the seal between the connecting rod and the connecting column, preventing corrosion of the threaded hole and connecting rod by external air, moisture, or corrosive media. A protective cover over the connecting column, with an elastic sealing ring filling the gap between the column and rod, prevents contact between external rainwater, dust, and corrosive media and the annular sealing gasket, thus preventing accelerated aging. This increases the stability of the connection between the column and rod and extends the service life of the double-head bolt. It solves the problems of existing devices where, when connecting the upper and lower screws to the hexagonal rod, it is difficult to rotate the upper and lower screws, and the exposed upper and lower gaskets are prone to aging, leading to poor sealing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the hexagonal rod and connecting column structure of this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of the screw and protective cover of this utility model.

[0019] In the diagram: 1. Hexagonal rod; 2. Connecting post; 21. Threaded hole; 22. Annular sealing gasket; 3. Screw; 31. Threaded part; 32. Regular hexagonal groove; 33. Connecting rod; 34. Smooth rod part; 4. Protective cover; 41. Elastic sealing ring; 5. Nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] like Figures 1-4As shown: It includes a hexagonal rod 1, and both the upper and lower ends of the hexagonal rod 1 are provided with screws 3. The end of the screw 3 away from the hexagonal rod 1 has a threaded part 31 and a nut 5 is threadedly fitted on it. The end of the screw 3 close to the hexagonal rod 1 is a connecting rod part 34.

[0023] A regular hexagonal groove 32 is provided in the middle of the end face of the screw 3 away from the hexagonal rod 1. A connecting post 2 is provided in the middle of both the upper and lower sides of the hexagonal rod 1. A threaded hole 21 is provided in the middle of the side of the connecting post 2 away from the hexagonal rod 1. A connecting rod 33 is provided in the middle of the side of the screw 3 close to the connecting post 2. The connecting rod 33 is threaded into the inside of the threaded hole 21. An annular sealing gasket 22 is provided on the side of the connecting post 2 away from the hexagonal rod 1. A protective cover 4 is fixedly fitted on the outer surface of the connecting rod part 34. The bottom end of the protective cover 4 extends to the middle of the connecting post 2. An elastic sealing ring 41 distributed in a linear array is fixedly fitted on the inner wall of the protective cover 4.

[0024] Furthermore, the connecting column 2, the screw 3, and the threaded hole 21 have the same diameter, and the inner diameter of the threaded hole 21 is the same as the inner diameter of the annular sealing gasket 22.

[0025] The annular sealing gasket 22 fills the gap between the connecting post 2 and the screw 3 to prevent external rainwater and dirt from entering the threaded hole 21 and causing the threaded hole 21 and the connecting rod 33 to rust.

[0026] Furthermore, the hexagonal rod 1 and the connecting column 2 are integrally formed structures;

[0027] The one-piece molding structure is stable and avoids potential weaknesses caused by gaps or welding points at the connection points.

[0028] Furthermore, the screw 3 and the connecting rod 33 are integrally formed structures;

[0029] The connecting rod 33 facilitates the connection between the screw 3 and the connecting post 2.

[0030] Furthermore, the annular sealing gasket 22 is bonded to the end face of the connecting post 2 away from the hexagonal rod 1. Both the annular sealing gasket 22 and the elastic sealing ring 41 are made of silicone.

[0031] The elastic sealing ring 41 can be filled between the inner wall of the protective cover 4 and the outer surface of the connecting column 2, thereby increasing the sealing of the protective cover 4 and preventing external air, rainwater and dust from entering the interior of the protective cover 4. This also prevents the annular sealing gasket 22 from aging too quickly and helps maintain the stability of the connection between the threaded hole 21 and the connecting rod 33.

[0032] The working principle and usage process of this utility model: This pointed and detachable double bolt head bolt can connect two objects through the threaded part 31 on the two screws 3.

[0033] When assembling the detachable double-headed bolt, use an adjustable wrench on the outer surface of the hexagonal rod 1, then insert an Allen wrench into the hexagonal groove 32 and rotate the screw 3 to screw the connecting rod 33 into the threaded hole 21. Subsequently, the end face of the connecting rod 34 and the end face of the connecting post 2 press against the annular sealing gasket 22. The annular sealing gasket 22 increases the sealing between the contact surfaces of the connecting rod 34 and the connecting post 2. During the process of the connecting rod 33 entering the threaded hole 21, the protective cover 4 will be placed on the outside of the connecting post 2, and the elastic sealing ring 41 will fill the gap between the connecting post 2 and the connecting rod 33, which can prevent external rainwater, dust and corrosive media from contacting the annular sealing gasket 22.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A detachable bolt with pointed head and double bolt head, comprising a hexagonal rod (1), screw rods (3) are arranged at the upper and lower ends of the hexagonal rod (1), a threaded part (31) is formed at the end of the screw rod (3) away from the hexagonal rod (1), and a nut (5) is threadedly sleeved on the threaded part (31), and the end of the screw rod (3) close to the hexagonal rod (1) is a light connecting rod part (34); characterized in that a regular hexagonal groove (32) is formed in the middle of the end face of the screw rod (3) away from the hexagonal rod (1), a connecting column (2) is arranged on the middle of the upper and lower faces of the hexagonal rod (1), a threaded hole (21) is formed in the middle of the face of the connecting column (2) away from the hexagonal rod (1), a connecting rod (33) is arranged on the middle of the face of the screw rod (3) close to the connecting column (2), the connecting rod (33) is threadedly sleeved in the threaded hole (21), an annular sealing gasket (22) is arranged on the face of the connecting column (2) away from the hexagonal rod (1), a protective cover (4) is fixedly sleeved on the outer surface of the light connecting rod part (34), the bottom end of the protective cover (4) extends to the middle of the connecting column (2), and the inner wall of the protective cover (4) is fixedly sleeved with elastic sealing rings (41) arranged in a linear array.

2. A detachable double bolt head bolt with a pointed end according to claim 1, characterized in that: The connecting column (2), the screw rod (3) and the threaded hole (21) have the same diameter, and the inner diameter of the threaded hole (21) is the same as the inner diameter of the annular sealing gasket (22).

3. A detachable double bolt head bolt with a pointed end according to claim 1, characterized in that: The hexagonal rod (1) and the connecting column (2) are integrally formed.

4. A detachable double bolt head bolt with a pointed end according to claim 1, characterized in that: The screw rod (3) and the connecting rod (33) are integrally formed.

5. A detachable double bolt head bolt with a pointed end according to claim 1, characterized in that: The annular sealing gasket (22) is bonded on the end face of the connecting column (2) away from the hexagonal rod (1), and the annular sealing gasket (22) and the elastic sealing ring (41) are both made of silica gel.

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