Expansion bolt capable of being telescopically adjusted

Abstract

The utility model provides an expansion bolt capable of being adjusted in a telescopic mode, and relates to the technical field of expansion bolts, the expansion bolt comprises a long rod, a protruding block is fixedly installed on the surface of the long rod, an expansion pipe A and an expansion pipe B are arranged on the surface of the long rod in a sleeved mode, a rotating block is connected to the surface of the long rod in a rotating mode, and a fixing piece is connected to the surface of the long rod in a rotating mode. The surface of the long rod is sleeved with a gasket, a threaded groove is formed in the surface of the expansion pipe A, and an expansion gap is formed in the surface of the expansion pipe A. According to the expansion pipe, by arranging the expansion pipe A, the expansion pipe B, the long rod, the clamping block and the threaded groove, a worker can conveniently select to increase or reduce the number of expansion pipe bodies according to the depth of the fixing hole; therefore, the effect of prolonging and shortening the length of the expansion pipe body is achieved, the situation that an expansion screw needs to be replaced due to the fact that the expansion screw and the fixing hole are not matched in depth is avoided, the adaptability of the expansion screw is improved, and the expansion pipe is simple in structure and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion bolts, in particular to a telescopically adjustable expansion bolt. Background Art

[0002] Expansion screws are a type of threaded connection element used to fix objects in a base material. Through thread structure and special expansion design, they can provide reliable fixation in the base material.

[0003] Publication No. CN218598560U discloses an expansion screw, comprising: a screw, a conical protrusion is provided on the left end of the screw, the diameter of the conical protrusion decreases from left to right, and a clamping joint is provided on the right end of the screw; a nut is sleeved on the screw in a threaded matching manner; an expansion tube is sleeved on the screw and located between the conical protrusion and the nut, the expansion tube comprises a left tube part and a right tube part connected in an integral manner, the left tube part is truncated, the diameter of the left tube part decreases from left to right, and the left tube part is divided into a plurality of open pieces arranged at equal angles around the central axis of the expansion tube through an opening. The utility model ensures the fixing strength of the expansion screw in the drilled hole and avoids the situation that the screw and the nut rotate together during the process of rotating the nut. Although this type of expansion screw has the effect of enhancing the fixing strength, it is lacking in telescopic adjustment. Since this type of expansion screw does not have a telescopic adjustment structure, when fixing the expansion screw in the fixing hole, it is necessary to replace the expansion screw that is compatible with the fixing hole according to the depth of the fixing hole, which not only reduces the adaptability of the expansion screw, but also is not conducive to the use of the installer. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0005] The utility model adopts the following technical scheme: a telescopically adjustable expansion bolt comprises a long rod, a convex block is fixedly installed on the surface of the long rod, an expansion tube A and an expansion tube B are sleeved on the surface of the long rod, a rotating block is rotatably connected to the surface of the long rod, a fixing piece is rotatably connected to the surface of the long rod, a gasket is sleeved on the surface of the long rod, a threaded groove is provided on the surface of the expansion tube A, an expansion joint is provided on the surface of the expansion tube A, a weakened joint is provided on the surface of the expansion tube A, and a clamping block is fixedly installed on the surface of the expansion tube A.

[0006] Preferably, a soft pad is provided on the surface of the rotating block, and a soft strip is fixedly installed on the surface of the rotating block. Here, the design of the soft pad can make the rotating block fit better with the surface of the installation position, and the design of the soft strip can make the fixing part fit better with the rotating block.

[0007] Preferably, the rotating block, the fixing member and the long rod are connected by threads, and the gasket is connected by sliding to the long rod. Here, the threaded connection design of the rotating block, the fixing member and the long rod facilitates the fixing of the rotating block and the fixing member on the long rod and also facilitates their removal.

[0008] Preferably, the surfaces of the expansion tube A and the expansion tube B are both provided with a clamping block and a thread groove, and the clamping block and the thread groove are connected by a thread. Here, the design of the clamping block and the thread groove facilitates the fixing of the expansion tube A and the expansion tube B together, thereby achieving the effect of adjusting the length of the expansion tube body.

[0009] Preferably, expansion joints and weakened joints are provided on the surfaces of the expansion tube A and the expansion tube B. Here, the design of the expansion joints and weakened joints has the effect of making the expansion tube A expand when subjected to pressure.

[0010] Preferably, the expansion tubes A and B are slidably connected to the long rod. Here, the sliding design of the expansion tubes A and B facilitates the selection of increasing or decreasing the number of expansion tubes according to the depth of the fixing hole.

[0011] Preferably, the soft pad and the soft strip are made of natural rubber. Here, the natural rubber material design of the soft pad and the soft strip prevents rust and corrosion caused by water ingress into the connection seam between the fixing member and the rotating block and the connection seam between the rotating block and the surface of the installation position.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by arranging the expansion tube A, the expansion tube B, the long rod, the clamping block and the threaded groove, it is convenient for the staff to choose to increase or decrease the number of the expansion tube bodies according to the depth of the fixing hole, thereby achieving the effect of extending or shortening the length of the expansion tube body, avoiding the need to replace the expansion screw due to the mismatch between the depth of the expansion screw and the fixing hole, improving the adaptability of the expansion screw, and having a simple structure and strong practicality.

[0014] 2. In the utility model, soft pads and soft strips are provided to prevent rust and corrosion caused by water ingress at the connection seams between the rotating block and the surface of the installation position and at the connection seams between the fixing part and the rotating block, thereby making it easier for the installer to disassemble the rotating block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of a telescopically adjustable expansion bolt is provided for the utility model;

[0016] Figure 2 The utility model provides a schematic diagram of the exploded structure of a fixing member and a rotating block in a telescopically adjustable expansion bolt;

[0017] Figure 3 The utility model provides a schematic diagram of the explosion structure of an expansion tube A in a telescopically adjustable expansion bolt;

[0018] Figure 4 The utility model proposes a telescopically adjustable expansion bolt Figure 2 Side angle diagram of .

[0019] Legend:

[0020] 1. Long rod; 2. Bump; 3. Expansion tube A; 4. Expansion tube B; 5. Turn block; 6. Fixing piece; 7. Gasket; 8. Thread groove; 9. Expansion joint; 10. Weakened joint; 11. Block; 12. Cushion; 13. Soft strip. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1

[0024] See also Figure 1-4 The utility model provides a technical solution: a telescopic and adjustable expansion bolt, comprising a long rod 1, a protrusion 2 is fixedly installed on the surface of the long rod 1, an expansion tube A3 and an expansion tube B4 are sleeved on the surface of the long rod 1, and the expansion tube A3 and the expansion tube B4 are slidably connected to the long rod 1. The sliding design of the expansion tube A3 and the expansion tube B4 and the long rod 1 makes it convenient for installers to increase or decrease the number of expansion tubes A3 and the expansion tube B4 according to the depth of the fixing hole, thereby extending and shortening the length of the expansion tube body. A rotating block 5 is rotatably connected to the surface of the long rod 1, and a fixing piece 6 is rotatably connected to the surface of the long rod 1. The rotating block 5, the fixing piece 6 and the long rod 1 are threadedly connected. A gasket 7 is sleeved on the surface of the long rod 1, and the gasket 7 is slidably connected to the long rod 1. The threaded connection design of the rotating block 5, the fixing piece 6 and the long rod 1 makes it convenient for installers to replace the model of the fixing piece 6 according to usage.

[0025] See also Figure 1-4A thread groove 8 is provided on the surface of the expansion tube A3, an expansion joint 9 is provided on the surface of the expansion tube A3, a weakened joint 10 is provided on the surface of the expansion tube A3, and the surfaces of the expansion tube A3 and the expansion tube B4 are both provided with expansion joints 9 and weakened joints 10. The design of the expansion joints 9 and the weakened joints 10 enables the expansion tube A3 to expand when subjected to the pressure of the protrusion 2. A clamping block 11 is fixedly installed on the surface of the expansion tube A3, and the clamping block 11 is connected to the thread groove 8 by a thread. The threaded connection between the clamping block 11 and the thread groove 8 is designed to facilitate the expansion tube A3 and the expansion tube B4 to be fixed together and also facilitate their disassembly.

[0026] Embodiment 2

[0027] See also Figure 1-4 A soft pad 12 is sleeved on the surface of the rotating block 5, and a soft strip 13 is fixedly installed on the surface of the rotating block 5. The material of the soft pad 12 and the soft strip 13 are both natural rubber. The design of the natural rubber material of the soft pad 12 and the soft strip 13 prevents the connection seam between the rotating block 5 and the surface of the installation position and the connection seam between the fixing part 6 and the rotating block 5 from being waterproof, thereby avoiding rust and corrosion caused by water ingress at the connection seam, and also facilitates the installation personnel to disassemble it.

[0028] Working principle: When using the expansion screw, first insert the long rod 1 into the fixing hole, and then choose to increase or decrease the number of expansion tubes A3 and expansion tubes B4 according to the depth of the fixing hole. After selecting the number of expansion tubes A3 and expansion tubes B4, the expansion tubes A3 and expansion tubes B4 are sleeved on the surface of the long rod 1. At this time, the installer fixes the expansion tube A3 by hand, and then rotates the expansion tube B4 so that the block 11 of the expansion tube B4 is connected with the thread groove 8 of the expansion tube A3 through threads. After fixing the expansion tube A3 and expansion tube B4, the long rod 1 together with the expansion tube A3 and expansion tube B4 are inserted into the fixing hole, and then the gasket 7 is sleeved on the long rod 1, and then the turning block 5 is connected with the long rod 1 through threads. When the turning block 5 is attached to the surface of the installation position, the long rod 1 will move outward, and the long rod 1 will drive the protrusion 2 to move outward, and the protrusion 2 will cause the expansion joint 9 and the weakened joint 10 of the expansion tube A3 to move outward. The expansion tube A3 and the expansion tube B4 are designed to increase or decrease the number of expansion tubes A3 and B4, thereby expanding the expansion tube body and avoiding the need for installers to replace the corresponding expansion screws according to the depth of the fixing hole. When the rotating block 5 is rotated, the rotating block 5 will drive the cushion 12 to move toward the installation position until the cushion 12 is attached to the surface of the installation position. When the fixing member 6 is connected to the long rod 1 by threads, the fixing member 6 will fit with the soft strip 13 on the surface of the rotating block 5. The design of the soft pad 12 and the soft strip 13 prevents rust and corrosion caused by water ingress at the connection seam between the rotating block 5 and the installation position and the connection seam between the fixing member 6 and the rotating block 5, thereby facilitating the installation personnel to disassemble it.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A telescopically adjustable expansion bolt, comprising a long rod (1), characterized in that: The surface of the long rod (1) is fixedly mounted with a protrusion (2), the surface of the long rod (1) is sleeved with an expansion tube A (3) and an expansion tube B (4), the surface of the long rod (1) is rotatably connected with a rotating block (5), the surface of the long rod (1) is rotatably connected with a fixing member (6), the surface of the long rod (1) is sleeved with a gasket (7), the surface of the expansion tube A (3) is provided with a threaded groove (8), the surface of the expansion tube A (3) is provided with an expansion joint (9), the surface of the expansion tube A (3) is provided with a weakened joint (10), and the surface of the expansion tube A (3) is fixedly mounted with a clamping block (11).

2. The telescopically adjustable expansion bolt according to claim 1, characterized in that: The surface of the rotating block (5) is covered with a soft pad (12), and the surface of the rotating block (5) is fixedly mounted with a soft strip (13).

3. The telescopically adjustable expansion bolt according to claim 1, characterized in that: The rotating block (5), the fixing member (6) and the long rod (1) are connected via threads, and the gasket (7) is connected to the long rod (1) in a sliding manner.

4. The telescopically adjustable expansion bolt according to claim 1, characterized in that: The surfaces of the expansion tube A (3) and the expansion tube B (4) are both provided with a clamping block (11) and a thread groove (8), and the clamping block (11) and the thread groove (8) are connected via threads.

5. The telescopically adjustable expansion bolt according to claim 1, characterized in that: The surfaces of the expansion tube A (3) and the expansion tube B (4) are both provided with expansion joints (9) and weakened joints (10).

6. The telescopically adjustable expansion bolt according to claim 1, characterized in that: The expansion tube A (3) and the expansion tube B (4) are slidably connected to the long rod (1).

7. The telescopically adjustable expansion bolt according to claim 2, characterized in that: The soft pad (12) and the soft strip (13) are both made of natural rubber.

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