Bidirectional expansion screw

Abstract

The utility model discloses a two-way expansion screw, which belongs to the technical field of expansion screws and comprises a fixing ring, a screw rod I and a threaded connecting column, the bottom of the fixing ring is fixedly connected with an expansion pipe I, the expansion pipe I is fixedly connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a connecting block, and the connecting block is fixedly connected with the threaded connecting column. The expansion pipe I and the expansion pipe II rotate by 90 degrees, so that the expansion pipe I and the expansion pipe II are effectively expanded from different directions, the stability after connection is improved, and the expansion pipe I and the expansion pipe II are effectively prevented from falling off from a connecting object; and when the two-way expansion screw is used, the threaded connecting column on the cover plate is driven to rotate through the second screw hole, the threaded connecting column is connected into the threaded groove through the threads, the second protruding screw rod in the threaded groove is effectively protected, the sharp end is prevented from hurting the human body, and the personal safety of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of expansion screw technology, and in particular to a bidirectional expansion screw. Background Technology

[0002] Two-way expansion screws are a special type of fastener with a unique design that allows for two-way expansion, providing a more secure and stable fixation.

[0003] The existing bidirectional expansion screws still have the following defects when in use: 1. Poor stability when connected to the object, the expansion screw is easy to fall off the object, affecting the normal work progress and reducing the reliability and service life of the connected object.

[0004] 2. After installation, there will be sharp protrusions that can easily cause injury to the user, increasing the risk of personal injury and reducing safety. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bidirectional expansion screw.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bidirectional expansion screw, comprising a fixing ring, a screw rod, and a threaded connecting post. An expansion tube is fixedly connected to the bottom of the fixing ring, a connecting rod is fixedly connected to the expansion tube, a connecting block is fixedly connected to the bottom of the connecting rod, an expansion tube is fixedly connected to the bottom of the connecting block, and a threaded groove is provided on the top of the fixing ring.

[0007] As a further description of the above technical solution:

[0008] The top of the screw rod is fixedly connected to the screw rod 1, the screw rod 1 is threadedly connected to the expansion tube 1 and the expansion tube 2, and the screw rod 2 is threadedly connected to the nut.

[0009] As a further description of the above technical solution:

[0010] A cover plate is fixedly connected to the threaded connecting post, and the threaded connecting post is threaded into the threaded groove on the fixing ring.

[0011] As a further description of the above technical solution:

[0012] The screw rod has a screw hole 1, and the cover plate has a screw hole 2.

[0013] As a further description of the above technical solution:

[0014] The expansion tube one and expansion tube two are set at a 90-degree angle vertically.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, when using a bidirectional expansion screw, the screw rod is threaded to the expansion tube 1 and the expansion tube 2 through the screw hole 1. The expansion tube 1 and the expansion tube 2 rotate 90 degrees, which effectively allows the expansion tube 1 and the expansion tube 2 to expand from different directions. The nut is threaded to the screw rod 2, so that the nut contacts the fixing ring, thereby further fixing the connecting rod and the expansion tube 2, improving the stability after connection, effectively preventing the expansion tube 1 and the expansion tube 2 from falling off the connector, and improving reliability and service life.

[0017] 2. In this utility model, when using the bidirectional expansion screw, the threaded connecting post on the cover plate is rotated through the screw hole two. The threaded connecting post is connected to the threaded groove through the thread, which effectively protects the screw rod two protruding in the threaded groove, avoids the sharp end from causing injury to the person, and improves the personal safety of the user. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a bidirectional expansion screw proposed in this utility model;

[0019] Figure 2 This is a partial structural diagram of a bidirectional expansion screw proposed in this utility model. Figure 1 ;

[0020] Figure 3 This is a partial structural diagram of a bidirectional expansion screw proposed in this utility model. Figure 2 ;

[0021] Figure 4 This is a partial structural diagram of a bidirectional expansion screw proposed in this utility model. Figure 3 .

[0022] Legend:

[0023] 1. Fixing ring; 2. Expansion tube one; 3. Connecting rod; 4. Connecting block; 5. Expansion tube two; 6. Threaded groove; 7. Screw rod one; 8. Screw rod two; 9. Nut; 10. Screw hole one; 11. Cover plate; 12. Threaded connecting post; 13. Screw hole two. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1-4 An embodiment of this utility model is provided: a bidirectional expansion screw, including a fixing ring 1, a screw rod 7 and a threaded connecting post 12. An expansion tube 2 is fixedly connected to the bottom of the fixing ring 1, a connecting rod 3 is fixedly connected to the expansion tube 2, a connecting block 4 is fixedly connected to the bottom of the connecting rod 3, an expansion tube 5 is fixedly connected to the bottom of the connecting block 4, and a threaded groove 6 is provided on the top of the fixing ring 1.

[0026] Screw rod 7 is fixedly connected to screw rod 8 at its top. Screw rod 7 is threaded into expansion tube 2 and expansion tube 5. Screw rod 8 is threaded with nut 9, which, together with fixing ring 1, further reinforces expansion tube 2 and expansion tube 5. A cover plate 11 is fixedly connected to threaded connecting post 12, which is threaded into threaded groove 6 on fixing ring 1. Screw rod 8 has screw hole 10, and cover plate 11 has screw hole 23, improving ease of use. Expansion tube 2 and expansion tube 5 are set vertically at 90 degrees, effectively fixing them to the connected object from multiple directions and points, enhancing the stability of the structure.

[0027] Working principle: When using the bidirectional expansion screw, connect expansion tube 1 (2), connecting block 4, and expansion tube 2 (5) to the connector. Place screw rod 1 (7) in the fixing ring 1 and connect it to screw hole 10 with a screwdriver. Rotate the screwdriver to drive screw hole 10 on screw rod 2 (8), which in turn drives screw rod 1 (7) to rotate. This causes screw rod 1 (7) to connect to expansion tube 1 (2) and expansion tube 2 (5) via threads, thus expanding expansion tube 1 (2) and expansion tube 2 (5). The angle difference between expansion tube 1 (2) and expansion tube 2 (5) is 90 degrees, providing expansion support for points in different directions. Thread nut 9 onto screw rod 2 (8) to fix the fixing ring 1, expansion tube 1 (2), and expansion tube 2 (5), enhancing structural stability. Connect screw to screw hole 2 (13) on cover plate 11 with a screwdriver. Screw hole 2 (13) drives cover plate 11 to rotate, which in turn drives threaded connecting post 12 to threaded groove 6, completing the use of the bidirectional expansion screw.

[0028] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bidirectional expansion screw, comprising a retaining ring (1), a screw rod (7), and a threaded connecting post (12), characterized in that: The bottom of the fixed ring (1) is fixedly connected to an expansion tube (2), a connecting rod (3) is fixedly connected to the expansion tube (2), a connecting block (4) is fixedly connected to the bottom of the connecting rod (3), an expansion tube (5) is fixedly connected to the bottom of the connecting block (4), and a threaded groove (6) is opened on the top of the fixed ring (1).

2. The bidirectional expansion screw according to claim 1, characterized in that: The top of the screw rod 1 (7) is fixedly connected to the screw rod 2 (8), the screw rod 1 (7) is threadedly connected to the expansion tube 1 (2) and the expansion tube 2 (5), and the screw rod 2 (8) is threadedly connected to the nut (9).

3. The bidirectional expansion screw according to claim 1, characterized in that: A cover plate (11) is fixedly connected to the threaded connecting post (12), and the threaded connecting post (12) is threadedly connected to the threaded groove (6) on the fixing ring (1).

4. A bidirectional expansion screw according to claim 2, characterized in that: The screw rod 2 (8) has a screw hole 1 (10).

5. A bidirectional expansion screw according to claim 3, characterized in that: The cover plate (11) has two screw holes (13).

6. A bidirectional expansion screw according to claim 1, characterized in that: The expansion tube one (2) and the expansion tube two (5) are arranged vertically at a 90-degree angle.

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