Threaded protective sleeve

By designing a threaded protective sleeve with a polyethylene sealing cap, a silicone bottom sealing cylinder, and a PTFE locking strip, the problem of poor sealing performance of traditional threaded protective sleeves is solved, achieving dust protection and transportation stability, and ensuring thread cleanliness and assembly accuracy.

CN223878598UActive Publication Date: 2026-02-06NINGGUO JINDING RUBBER & PLASTIC PROD CO LTD
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Patent Information

Application Number
CN202520631650.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-07
Publication Date
2026-02-06
Estimated Expiration
2035-04-07

AI Technical Summary

Technical Problem

Traditional threaded protective sleeves have poor sealing performance, allowing dust and grit to enter, and they are prone to falling off during transportation, affecting the cleanliness of the threads and installation accuracy.

Method used

A threaded protective sleeve was designed, which uses a polyethylene sealing cap and a silicone bottom sealing cylinder, combined with a limiting pad and a retaining strip structure to ensure sealing, and uses polytetrafluoroethylene material to reduce frictional resistance and prevent it from falling off.

Benefits of technology

It effectively prevents dust and grit from entering, keeps threads clean, reduces wear, and ensures stability and assembly accuracy during transportation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a thread protective sleeve which comprises a protective sleeve body and a thread body, the top of the protective sleeve body is connected with a sealing cover in a clamped mode, the top of the protective sleeve body is provided with a bottom sealing cylinder in a sliding mode, the protective sleeve body is connected with the thread body in a sliding mode, and the inner side of the protective sleeve body is fixedly connected with a limiting pad. According to the design, the whole protective sleeve is made of plastic-like materials, it can be guaranteed that the inner side of the protective sleeve body is in a relatively closed state through cooperative use of the arranged bottom sealing cylinder and the sealing cover, dust or gravel is prevented from entering the protective sleeve body in the thread storage or transportation process, and the protective sleeve body is prevented from being damaged. The interior of the protective sleeve body is kept clean, the clean state of threads during assembly is guaranteed, smooth installation is facilitated, abrasion is reduced, meanwhile, the sealing cover and the protective sleeve body are fixed into a whole through the clamping groove, and the bottom sealing cylinder and the limiting pad guarantee that the protective sleeve body cannot fall off in the transportation process through the damping performance of silica gel.
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Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical parts protection technical field especially relates to a thread protection sleeve. BACKGROUND

[0002] Mechanical parts protection is a key link to ensure stable operation of equipment and prolong service life. By taking a series of protective measures, it can effectively prevent the damage of parts due to environmental factors, wear or corrosion. These protective measures include but are not limited to applying rust-proof oil, using protective sleeve or packaging material to isolate moisture and dust, and installing protective devices at key positions to resist physical impact. In addition, regular cleaning, lubrication and inspection are also an indispensable part of maintaining mechanical parts.

[0003] Thread protection sleeve is a non-metal sleeve for thread protection, which is mainly used to protect threads from damage during transportation and storage. This protective sleeve can isolate the direct contact between threads and the external environment, preventing damage to threads caused by impact, friction, corrosion or pollution.

[0004] Most traditional thread protection sleeves are a simple sleeve that uses the large friction coefficient of non-metallic surface to cover the surface of the thread. However, during actual transportation, the sealing performance of this sleeve may not be good due to vibration, and it may even fall off, allowing external dust and sand to enter the sleeve, resulting in a dirty thread surface. After the sleeve falls off, the extrusion and collision between threads may cause damage to the threads, leading to deviation during assembly. Therefore, a thread protection sleeve is proposed. SUMMARY

[0005] The utility model aims at solving the problem of poor sealing and unsatisfactory protection effect in the prior art, and proposes a thread protection sleeve.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A thread protection sleeve, comprising a protective sleeve body and a thread body, a sealing cover is connected to the top of the protective sleeve body, a bottom sealing cylinder is slidably arranged on the top of the protective sleeve body, the protective sleeve body and the thread body are slidably connected, a limiting pad is fixedly connected to the inner side of the protective sleeve body, and a plurality of clamping strips are fixedly connected to the inner side of the protective sleeve body.

[0008] The above technical scheme further comprises:

[0009] A plurality of clamping grooves are formed on the outer side of the sealing cover, the clamping grooves are in arc shape, and the opening size of the clamping grooves is matched with the top protrusion of the protective sleeve body.

[0010] The top of the sealing cover is fixedly connected with a pull ring, the pull ring is made of metal, and the sealing cover is made of polyethylene material in multiple colors.

[0011] The outer side of the protective sleeve body is provided with a color groove, and the inner side of the color groove is fixedly connected with a nameplate.

[0012] The material of the protective sleeve body and the clamping strip is polytetrafluoroethylene.

[0013] The limiting pad is a hollow cone type design, and the material of the limiting pad is silica gel material.

[0014] The inner bottom of the bottom sealing cylinder is provided with a fitting opening, and the opening size of the fitting opening is matched with the shape of the sealing cover.

[0015] The material of the bottom sealing cylinder is silica gel material.

[0016] The utility model has the following beneficial effects:

[0017] 1、 the utility model discloses a bottom sealing cylinder and the cooperation of sealing cover are used, can guarantee that the inner side of protective sleeve body is in relatively closed state, prevents dust or gravel from entering inside in the storage or transportation process of screw thread, keeps the inside of protective sleeve body clean, guarantees the clean state of screw thread when assembling, helps smooth installation and reduces abrasion.

[0018] 2、 the utility model discloses, and the whole design adopts like plastic material, simultaneously, the sealing cover and protective sleeve body are fixed into a whole with the clamping groove, and the bottom sealing cylinder and the limiting pad utilize the shock attenuation performance of silica gel, guarantee that the protective sleeve body does not fall off in the transportation process. DRAWINGS

[0019] Figure 1 It is a body structure schematic view of the utility model discloses a screw thread protective sleeve;

[0020] Figure 2 It is a protective sleeve body structure schematic view in the utility model;

[0021] Figure 3 It is a protective sleeve internal structure schematic view in the utility model;

[0022] Figure 4 It is a protective sleeve and screw thread body structure schematic view in the utility model;

[0023] Figure 5 It is a bottom sealing cylinder and sealing cover structure schematic view in the utility model.

[0024] In the diagram: 1. Protective sleeve body; 2. Bottom sealing cylinder; 3. Sealing cap; 4. Pull ring; 5. Fitting opening; 6. Color groove; 7. Nameplate; 8. Locking strip; 9. Limiting pad; 10. Threaded body; 11. Locking groove; Detailed Implementation

[0025] 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.

[0026] Implementation Examples

[0027] like Figures 1-5 As shown, the present invention proposes a threaded protective sleeve, including a protective sleeve body 1 and a threaded body 10. A sealing cap 3 is snapped onto the top of the protective sleeve body 1, and a bottom sealing cylinder 2 is slidably disposed on the top of the protective sleeve body 1. The protective sleeve body 1 and the threaded body 10 are slidably connected. A limit pad 9 is fixedly connected to the inner side of the protective sleeve body 1, and multiple locking strips 8 are fixedly connected to the inner side of the protective sleeve body 1.

[0028] The threaded body 10 is placed inside the protective sleeve body 1. The threaded body 10 is secured inside the protective sleeve body 1 by the squeezing force of the clamping strip 8. The sealing cover 3 and the bottom sealing cylinder 2 are designed to make the inside of the protective sleeve body 1 a closed state. The limiting pad 9 is mainly used to limit the threaded body 10 to prevent it from vibrating during transportation and causing the protective sleeve body 1 to fall off.

[0029] Multiple slots 11 are provided on the outer side of the sealing cover 3. The slots 11 are arc-shaped, and the opening size of the slots 11 is adapted to the top protrusion of the protective cover body 1.

[0030] The arc shape of the slot 11 fits into the top protrusion of the protective cover body 1, making the sealing cover 3 and the protective cover body 1 a whole, preventing the protective cover body 1 from loosening during transportation.

[0031] A pull ring 4 is fixedly connected to the top of the sealing cap 3. The pull ring 4 is made of metal, and the sealing cap 3 is made of polyethylene material in various colors.

[0032] The sealing cap 3 uses multiple colors to distinguish different specifications of threads. The use of polyethylene material ensures that the sealing cap 3 can be moved and locked on the top of the protective sleeve body 1 and remain fixed after being locked. At the same time, the polyethylene material ensures that the sealing cap 3 has a certain degree of wear resistance.

[0033] The outer side of the protective sleeve body 1 is provided with a color groove 6, and the inner side of the color groove 6 is fixedly connected with a nameplate 7.

[0034] The color groove 6 and the nameplate 7 are used in cooperation, the nameplate 7 is mainly used for remarking the thread specification, and the color groove 6 is consistent with the color of the sealing cover 3.

[0035] The material of the protective sleeve body 1 and the clamping strip 8 is polytetrafluoroethylene, the polytetrafluoroethylene is the material with the lowest friction coefficient in solid materials, the surface tension of the polytetrafluoroethylene is extremely small, any substance cannot be adhered to the polytetrafluoroethylene, the protective sleeve body 1 can reduce the friction resistance and abrasion during the installation and dismounting process, meanwhile, the adhesion between the thread and the protective sleeve is avoided, and the use efficiency is improved.

[0036] The limiting pad 9 is designed in a middle hollow conical frustum type, the material of the limiting pad 9 is silica gel material, the limiting pad 9 is sleeved on the outer side of the thread body 10, and the vibration generated during the transportation process can be well absorbed.

[0037] The inner bottom of the bottom sealing cylinder 2 is provided with a fitting opening 5, the opening size of the fitting opening 5 is matched with the shape of the sealing cover 3, after the thread body 10 is taken out, the sealing cover 3 is placed on the inner side of the fitting opening 5, and meanwhile, the sealing cover 3 is sleeved on the bottom of the protective sleeve body 1, so that the protective sleeve body 1 is not easy to lose and is convenient to recycle.

[0038] The material of the bottom sealing cylinder 2 is silica gel material, the two bottom sealing cylinders 2 are placed during the transportation process, and the vibration generated during the transportation process can be effectively absorbed.

[0039] In the embodiment, first, the silica gel elasticity of the protective sleeve body 1 is utilized, the limiting pad 9 is placed in the protective sleeve body 1 by breaking the bottom of the protective sleeve body 1, then the thread body 10 is placed in the central hollow of the limiting pad 9, then the thread body 10 is clamped between the multiple clamping strips 8 under the extrusion of the clamping strips 8, then the thread body 10 is clamped on the top protrusion of the protective sleeve body 1 through the clamping groove 11, and finally, the bottom sealing cylinder 2 is sleeved on the outer side of the protective sleeve body 1, after the thread body 10 is used, only the sealing cover 3 needs to be placed on the inner side of the fitting opening 5, and meanwhile, the sealing cover 3 needs to be sleeved on the bottom of the protective sleeve body 1, so that the protective sleeve body 1 is not easy to lose and is convenient to recycle.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A thread protector comprising a protector body (1) and a thread body (10), characterized in that, The top of the protective sleeve body (1) is clamped with a sealing cover (3), the top of the protective sleeve body (1) is slidably provided with a bottom sealing cylinder (2), the protective sleeve body (1) and the threaded body (10) are slidably connected, the inner side of the protective sleeve body (1) is fixedly connected with a limiting pad (9), and the inner side of the protective sleeve body (1) is fixedly connected with a plurality of clamping strips (8).

2. A thread protector according to claim 1, wherein, The outer side of the sealing cover (3) is provided with a plurality of clamping grooves (11), the clamping grooves (11) are in arc shape, and the opening size of the clamping grooves (11) is matched with the top protrusion of the protective sleeve body (1).

3. A thread protector according to claim 1, wherein The top of the sealing cover (3) is fixedly connected with a pull ring (4), the pull ring (4) is made of metal, and the sealing cover (3) is made of polyethylene material in multiple colors.

4. A threaded protective sleeve according to claim 1, characterized in that The outer side of the protective sleeve body (1) is provided with a color groove (6), and the inner side of the color groove (6) is fixedly connected with a nameplate (7).

5. A threaded protective sleeve according to claim 1, characterized in that The material of the protective sleeve body (1) and the clamping strip (8) is polytetrafluoroethylene.

6. A threaded protective sleeve according to claim 1, characterized in that The limiting pad (9) is designed in a hollow cone shape, and the material of the limiting pad (9) is silica gel material.

7. A threaded protective sleeve according to claim 1, characterized in that The inner bottom of the bottom sealing cylinder (2) is provided with a matching opening (5), and the opening size of the matching opening (5) is matched with the shape of the sealing cover (3).

8. A threaded protective sleeve according to claim 1, characterized in that The material of the bottom sealing cylinder (2) is silica gel material.