A reinforcing bar wire head protection device
Patent Information
- Application Number
- CN202522475792.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-21
AI Technical Summary
[0005]上述检索专利整体结构未考虑模块化可更换设计,导致装置较短,重复使用成本较高;保护筒的塑料材质,缺乏防撞结构,并且在钢筋吊装后保护帽容易磨损及脱落,故而存在一定局限性
[0013] Firstly, the hollow sleeve and end fastening device of this utility model are produced in a modular manner, which can be combined to adapt to different scenario requirements; during installation, simply insert the steel wire end into the hollow sleeve and rotate the end device until it is magnetically locked; the protective device is reusable, and the end anti-collision module can be replaced separately after damage, reducing costs.
Smart Images

Figure CN224859255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a rebar thread protection device. Background Technology
[0002] A rebar thread protection cap is a protective device used in the construction industry. It is specifically designed to protect the finished straight thread ends of rebars. Its main function is to prevent the rebar threads from being damaged, corroded, or contaminated during transportation, storage, and construction.
[0003] A search revealed Chinese patent CN221972824U, which discloses a rebar thread protection device, comprising a protective cylinder, a protective pad, and a closing device. The protective cylinder is fitted onto the end of the rebar, with its height exceeding the height of the rebar thread. The bottom of the protective cylinder is sealed, while the top is open. The protective pad is an annular flexible sleeve, coaxially positioned at the top of the protective cylinder. The inner diameter of the protective pad is equal to the inner diameter of the protective cylinder, and the outer wall of the protective pad gradually widens outwards from the connection point between the pad and the protective cylinder. The closing device is fitted onto the protective pad and tightly seals it against the rebar. This device improves the protection of the rebar thread and reduces damage to the rebar thread.
[0004] Based on the above search and existing technology, the findings were as follows:
[0005] The aforementioned patents do not consider modular and replaceable design in their overall structure, resulting in a shorter device and higher cost of reuse; the plastic material of the protective cylinder lacks an anti-collision structure, and the protective cap is prone to wear and fall off after the steel bars are hoisted, thus having certain limitations. Utility Model Content
[0006] To solve the above-mentioned technical problems, this utility model proposes a rebar thread protection device that can adapt to rebars of various diameters and specifications, so that the protection device can be firmly fitted onto the straight thread end of the rebar, effectively ensuring the effect of the straight thread connection of the rebar.
[0007] The technical solution to achieve the purpose of this utility model is as follows: a rebar thread protection device, comprising a rebar, one end of which is fixedly fitted with a thread, and further comprising a hollow tube sleeve and a fastening device.
[0008] The hollow tube sleeve is fitted over the outside of the threaded end, and an external thread is fixedly installed on the outside of the hollow tube sleeve.
[0009] The fastening device is sleeved on one end of the hollow tube, and a round head structure is fixedly installed on the outer end of the fastening device.
[0010] Preferably, a shrinkable rubber ring is fixedly installed inside the other end of the hollow tube sleeve, and a serrated rubber pad is fixedly installed inside the hollow tube sleeve. Both the shrinkable rubber ring and the serrated rubber pad are in contact with the outside of the reinforcing bar.
[0011] Preferably, one end of the fastening device is fixedly installed with an inward thread, which is compatible with an outward thread. A magnet is fixedly installed inside the fastening device, which is in close contact with the end of the reinforcing bar. Anti-slip texture is fixedly installed on the outside of the round head structure.
[0012] Compared with existing technologies, the significant advantages of this invention are:
[0013] Firstly, the hollow sleeve and end fastening device of this utility model are produced in a modular manner, which can be combined to adapt to different scenario requirements; during installation, simply insert the steel wire end into the hollow sleeve and rotate the end device until it is magnetically locked; the protective device is reusable, and the end anti-collision module can be replaced separately after damage, reducing costs.
[0014] Secondly, this utility model significantly improves the protection effect of rebar wire ends, avoiding rust and mechanical damage; it is highly adaptable and can cover various rebar diameter specifications; it is easy to install, firmly and reliably, greatly reducing the risk of falling off; the modular design extends service life and reduces maintenance costs; the color coding system improves the efficiency of construction site management.
[0015] This invention addresses the problems of existing overall structures that do not consider modular and replaceable design, resulting in shorter devices and higher reuse costs; the plastic material of the protective cylinder lacks an anti-collision structure; and the protective cap is prone to wear and detachment after the steel bars are hoisted. Attached Figure Description
[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:
[0017] Figure 1 This is a three-dimensional structural schematic diagram provided by this utility model;
[0018] Figure 2 This is a cross-sectional structural schematic diagram provided by this utility model;
[0019] Figure 3 This is a schematic diagram of the disassembled structure provided by this utility model;
[0020] Figure 4 This is a schematic diagram of the fastening device provided by this utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Reinforcing bar; 101. Threaded end; 2. Hollow tube sleeve; 201. Shrink rubber ring; 202. Serrated rubber pad; 203. External thread; 3. Fastening device; 301. Round head structure; 302. Internal thread; 303. Magnet; 4. Anti-slip texture. Detailed Implementation
[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0024] This utility model provides an improved rebar thread protection device. The technical solution of this utility model is as follows:
[0025] like Figures 1-4 As shown, a rebar thread protection device includes a rebar 1, with a thread 101 fixedly installed at one end of the rebar 1. The device is made from readily available materials and has a high utilization rate. It also includes a hollow tube sleeve 2 and a fastening device 3.
[0026] Hollow tube sleeve 2 is fitted onto the outside of threaded end 101. External thread 203 is fixedly installed on the outside of hollow tube sleeve 2. The outside of hollow sleeve is made of plastic material and is cylindrical. It is firmly fitted onto threaded end 101, effectively ensuring the straight thread connection of steel bar 1.
[0027] The fastening device 3 is sleeved on one end of the hollow tube sleeve 2. A round head structure 301 is fixedly installed on the outer end of the fastening device 3. The end anti-collision module can be replaced separately after it is damaged, thus reducing costs.
[0028] Furthermore, a shrinkable rubber ring 201 is fixedly installed inside the other end of the hollow tube sleeve 2, and a serrated rubber pad 202 is fixedly installed inside the hollow tube sleeve 2. Both the shrinkable rubber ring 201 and the serrated rubber pad 202 are in contact with the outside of the reinforcing bar 1. The shrinkable rubber ring 201 can ensure the airtightness of the reinforcing bar 1 after insertion, and the serrated structure can be used to ensure the reliability of the connection between the reinforcing bar 1 and the protective device.
[0029] Furthermore, an inwardly threaded 302 is fixedly installed at one end of the fastening device 3, which is compatible with the outwardly threaded 203. A magnet 303 is fixedly installed inside the fastening device 3, which is in close contact with the end of the reinforcing bar 1. Anti-slip texture 4 is fixedly installed on the outside of the round head structure 301. Through the built-in array of strong magnets 303, the end of the reinforcing bar 1 is quickly attracted by magnetic attraction, simplifying the installation process. The anti-slip texture 4 is added to the surface of the round head, which is convenient for manual tightening. The overall weight is optimized, making it easy to carry and use in batches.
[0030] The specific working method is as follows: It consists of a hollow tube sleeve 2 that fits over the straight threaded end 101 of the rebar 1 and a fastening device 3. The hollow tube sleeve 2 is made of plastic and is cylindrical. The opening is a shrinkable rubber ring 201 to ensure the airtightness of the rebar 1 after insertion. The hollow tube sleeve 2 is embedded with a serrated rubber pad 202. After the threaded end 101 is inserted, it is screwed inward. The gear shape can be used to ensure the reliability of the connection between the rebar 1 and the protective device. The fastening device 3 is connected to the hollow tube sleeve 2 by a threaded buckle. The fastening device 3 is equipped with a magnet 303 inside, which makes it easier to attract the rebar 1. The fastening device 3 is cylindrical with a round head, which can play a role in anti-collision and cushioning. At the same time, the round head structure 301 and the anti-slip texture 4 make it easier to apply force to the palm and make it easier to fit the threaded end 101. In addition, the fastening device 3 is set with multiple color categories, with one color corresponding to the same specification of rebar 1, which can better help workers distinguish the specifications and models of rebar 1. While preventing the anti-collision sleeve from falling off, it also prevents rainwater from entering. The materials are readily available, the manufacturing process is simple, the use is convenient, and the utilization rate is high.
[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.
Claims
1. A rebar thread protection device, comprising a rebar (1), characterized in that: One end of the reinforcing bar (1) is fixedly fitted with a threaded end (101), and the reinforcement bar (1) also includes: Hollow tube sleeve (2), the hollow tube sleeve (2) is sleeved on the outside of the threaded end (101), and an external spiral thread (203) is fixedly installed on the outside of the hollow tube sleeve (2). Fastening device (3), the fastening device (3) is sleeved on one end of the hollow tube sleeve (2), and a round head structure (301) is fixedly installed on the outer end of the fastening device (3).
2. The rebar thread protection device according to claim 1, characterized in that: A shrinkable rubber ring (201) is fixedly installed inside the other end of the hollow tube sleeve (2), and a serrated rubber pad (202) is fixedly installed inside the hollow tube sleeve (2). Both the shrinkable rubber ring (201) and the serrated rubber pad (202) are in contact with the outside of the steel bar (1).
3. A rebar thread protection device according to any one of claims 1-2, characterized in that: The fastening device (3) has an internal thread (302) fixedly installed at one end, which is compatible with the external thread (203). The fastening device (3) has a magnet (303) fixedly installed inside, which is in close contact with the end of the reinforcing bar (1). The round head structure (301) has anti-slip texture (4) fixedly installed on the outside.
Citation Information
Patent Citations
Reinforcing steel bar head protection device
CN221972824U