Split type reinforcing steel bar connecting sleeve with locking function
By using a split-type rebar connecting sleeve with a locking function, the problem of inconvenient installation of integral sleeves is solved, and convenient and stable rebar connection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG NUCLEAR POWER SPECIAL BUILDING MATERIALS CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-10
AI Technical Summary
Existing integral rebar connecting sleeves require rotating the entire rebar during installation, which makes installation inconvenient and the connection strength is easily affected by external forces.
The steel bar connecting sleeve adopts a split structure and locking function. Two steel bars are installed separately through the split structure and fixed by the locking structure to prevent rotation or displacement.
It enables convenient installation of steel bar connections, enhancing the stability and resistance to external forces of the connection.
Smart Images

Figure CN224478634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rebar connecting sleeve technology, specifically a split-type rebar connecting sleeve with locking function. Background Technology
[0002] A rebar connecting sleeve is a key mechanical connector used to connect rebars. It is widely used in construction engineering. It achieves a high-strength and stable connection between rebars by screwing two rebars into the two ends of the sleeve and using the threads on the inner wall of the sleeve to tightly engage with the threads on the outer wall of the rebar.
[0003] A search revealed a utility model patent (Chinese Patent Publication No. CN220598914U) that discloses an explosion-proof rebar connecting sleeve. This utility model patent describes a method where a sealing mechanism connects the connecting sleeve threadedly to the top of a lower rebar. The top of the rebar applies pressure to a push rod, which, via a moving plate, drives a breaking rod into a glue container. Liquid glue then exits through an overflow hole, a through hole, and a discharge port, filling the gap between the internal thread of the connecting sleeve and the external thread on the rebar surface. The liquid glue is then injected into the top of the connecting sleeve, and the bottom end of the upper rebar is threadedly connected into the connecting sleeve. Under the pressure of the rebar, the gap in the connecting sleeve is filled. The gap between the internal thread of the connecting sleeve and the external thread on the surface of the rebar is sealed after the liquid adhesive solidifies. This prevents moisture from entering the interior of the connecting sleeve through the gap in a humid environment, causing thread corrosion and reducing the connection strength between the connecting sleeve and the rebar. However, this explosion-proof rebar connecting sleeve, like ordinary rebar connecting sleeves, is an integral design. When connecting rebars, the rebars at both ends need to be connected to the sleeve sequentially. After the first rebar is installed by rotating the sleeve, the second rebar can only be installed by rotating the entire rebar, which is quite troublesome. Therefore, a split-type rebar connecting sleeve with a locking function is proposed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a split-type rebar connecting sleeve with locking function, which has the advantages of facilitating the connection and installation of two rebars and the fixation of the installed rebars, thus solving the problem that the structure of existing devices needs to be optimized.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a split-type rebar connecting sleeve with locking function, comprising a first sleeve, the first sleeve having a split structure on its exterior, a locking structure on its exterior, and a rebar body being threadedly connected to the interior of the first sleeve.
[0006] The split structure includes a second sleeve, which is provided outside the first sleeve. A fixing block is fixedly installed on the left side of the second sleeve. The fixing block has a movable groove inside and a fixing bolt is threaded inside the fixing block. A rotating rod is fixedly installed on the right side of the first sleeve. A turntable is fixedly installed on the right side of the rotating rod. A ball bearing is rotatably connected inside the turntable. An insertion hole is provided on the outer surface of the turntable.
[0007] Furthermore, the locking structure includes a clamping block, the clamping block is hinged to the outer surface of the first sleeve, the clamping block has a first threaded ring on its outer surface, a spring body is fixedly installed inside the clamping block, a rubber block is fixedly installed at the end of the spring body, and a locking ring is provided on the outer surface of the clamping block.
[0008] Furthermore, the first sleeve and the second sleeve have the same structure. The interior of the first sleeve and the interior of the second sleeve are both provided with internal threads, and the outer surface of the reinforcing bar body is provided with external threads. The interior of the first sleeve and the interior of the second sleeve are both threadedly connected to the outer surface of the reinforcing bar body.
[0009] Furthermore, the interior of the movable groove is adapted to the outer surface of the turntable, and there are two fixing bolts. The two fixing bolts are respectively threaded to the top and bottom of the fixing block. The right side of the rotating rod extends into the interior of the movable groove and is fixedly connected to the left side of the turntable.
[0010] Furthermore, the turntable is internally connected to a number of ball bearings, the outer surfaces of which are movably connected to the interior of the movable groove. The outer surface of the turntable is provided with a number of insertion holes, the interior of which is adapted to the outer surfaces of two fixing bolts.
[0011] Furthermore, four clamping blocks are hinged to the outer surfaces of the first sleeve and the second sleeve. Each clamping block has a first threaded ring on its outer surface. Two spring bodies are fixedly installed inside each clamping block. A rubber block is fixedly installed at the end of each pair of spring bodies. There are two locking rings. Each locking ring has a second threaded ring inside. The first threaded ring and the second threaded ring are compatible.
[0012] Beneficial effects
[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0014] This split-type rebar connecting sleeve with locking function, through its split structure, allows two rebars to be installed on the left and right ends of the device respectively without rotating the entire rebar body. This completes the installation of the two rebars, and the locking structure can lock and fix the two installed rebars, preventing them from rotating or shifting due to external forces after installation. This facilitates the connection and installation of two rebars and makes it easy to fix the installed rebars. Attached Figure Description
[0015] Figure 1 This is a partial three-dimensional structural schematic diagram of the present invention;
[0016] Figure 2 This is a three-dimensional structural diagram of a partial clamping block of this utility model;
[0017] Figure 3 This is a schematic diagram of the front structure of this utility model;
[0018] Figure 4 This is a front sectional view of the present invention.
[0019] Figure 5 This is a partial side view of the structure of this utility model;
[0020] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.
[0021] In the diagram: 1. First sleeve; 2. Split structure; 201. Second sleeve; 202. Fixing block; 203. Movable groove; 204. Fixing bolt; 205. Rotating rod; 206. Turntable; 207. Ball bearing; 208. Insertion hole; 3. Locking structure; 301. Clamping block; 302. First threaded ring; 303. Spring body; 304. Rubber block; 305. Locking ring; 4. Rebar body. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1-6 A split-type rebar connecting sleeve with locking function includes a first sleeve 1, a split structure 2 on the outside of the first sleeve 1, a locking structure 3 on the outside of the first sleeve 1, and a rebar body 4 threadedly connected inside the first sleeve 1.
[0024] The split structure 2 includes a second sleeve 201. The second sleeve 201 is provided on the outside of the first sleeve 1. A fixing block 202 is fixedly installed on the left side of the second sleeve 201. A movable groove 203 is opened inside the fixing block 202. A fixing bolt 204 is threadedly connected inside the fixing block 202. A rotating rod 205 is fixedly installed on the right side of the first sleeve 1. A turntable 206 is fixedly installed on the right side of the rotating rod 205. A ball bearing 207 is rotatably connected inside the turntable 206. An insertion hole 208 is opened on the outer surface of the turntable 206.
[0025] Furthermore, the locking structure 3 includes a clamping block 301, the clamping block 301 is hinged to the outer surface of the first sleeve 1, the outer surface of the clamping block 301 is provided with a first threaded ring 302, the inside of the clamping block 301 is fixedly installed with a spring body 303, the end of the spring body 303 is fixedly installed with a rubber block 304, and the outer surface of the clamping block 301 is provided with a locking ring 305.
[0026] Specifically, such as Figure 4 As shown, first remove the locking ring 305, then press the raised part of the clamping block 301, and then pass the steel bar body 4 to be installed through the locking ring 305. Through the setting of internal and external threads, one of the steel bar bodies 4 is threaded into the inside of the first sleeve 1. Then remove the two fixing bolts 204 and, in the same way, rotate the second sleeve 201 to install the second steel bar body 4 into the inside of the second sleeve 201. Through the setting of the turntable 206 and the ball bearing 207, the second sleeve 201 can be rotated easily when the fixing bolts 204 are removed. After the two steel bar bodies 4 are installed, the fixing bolts 204 are installed again, and then the fixing bolts 204 are inserted into the insertion hole 208 to fix the turntable 206.
[0027] Specifically, such as Figure 4 and Figure 5 As shown, after the two steel bars are fixed by the first sleeve 1 and the second sleeve 201, the four corresponding clamping blocks 301 are closed. After closing, the locking ring 305 is fixed to the outer surface of the four corresponding clamping blocks 301 by the setting of the first threaded ring 302 and the second threaded ring, thereby fixing the four clamping blocks 301. After the four clamping blocks 301 are fixed, under the action of the spring body 303, the rubber block 304 will tightly fit with the outer surface of the steel bar body 4, thereby clamping and fixing the two steel bar bodies 4.
[0028] In summary, this split-type rebar connecting sleeve with locking function, through the split structure 2, allows two rebar bodies 4 to be installed at the left and right ends of the device respectively without rotating the entire rebar body 4, thus completing the installation of the two rebar bodies 4. The locking structure 3 can lock and fix the two installed rebars, preventing the two rebar bodies 4 from rotating or shifting due to external forces after installation. This achieves the purpose of facilitating the connection and installation of two rebars and the fixation of the installed rebars.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A split-type rebar connecting sleeve with locking function, comprising a first sleeve (1), characterized in that: The first sleeve (1) is provided with a split structure (2) on the outside, and a locking structure (3) is provided on the outside of the first sleeve (1). The first sleeve (1) is connected to a steel bar body (4) by a thread inside. The split structure (2) includes a second sleeve (201), which is provided on the outside of the first sleeve (1). A fixing block (202) is fixedly installed on the left side of the second sleeve (201). A movable groove (203) is opened inside the fixing block (202). A fixing bolt (204) is threadedly connected inside the fixing block (202). A rotating rod (205) is fixedly installed on the right side of the first sleeve (1). A turntable (206) is fixedly installed on the right side of the rotating rod (205). A ball bearing (207) is rotatably connected inside the turntable (206). An insertion hole (208) is opened on the outer surface of the turntable (206).
2. The split-type rebar connecting sleeve with locking function according to claim 1, characterized in that: The locking structure (3) includes a clamping block (301), the clamping block (301) is hinged to the outer surface of the first sleeve (1), the outer surface of the clamping block (301) is provided with a first threaded ring (302), the inside of the clamping block (301) is fixedly installed with a spring body (303), the end of the spring body (303) is fixedly installed with a rubber block (304), and the outer surface of the clamping block (301) is provided with a locking ring (305).
3. A split-type rebar connecting sleeve with locking function according to claim 1, characterized in that: The first sleeve (1) and the second sleeve (201) have the same structure. The interior of the first sleeve (1) and the interior of the second sleeve (201) are both provided with internal threads. The outer surface of the steel bar body (4) is provided with external threads. The interior of the first sleeve (1) and the interior of the second sleeve (201) are both threadedly connected to the outer surface of the steel bar body (4).
4. A split-type rebar connecting sleeve with locking function according to claim 1, characterized in that: The interior of the movable groove (203) is adapted to the outer surface of the turntable (206). There are two fixing bolts (204), which are threaded to the top and bottom of the fixing block (202) respectively. The right side of the rotating rod (205) extends into the interior of the movable groove (203) and is fixedly connected to the left side of the turntable (206).
5. A split-type rebar connecting sleeve with locking function according to claim 1, characterized in that: The turntable (206) has a number of ball bearings (207) rotatably connected inside. The outer surfaces of the ball bearings (207) are movably connected to the interior of the movable groove (203). The outer surface of the turntable (206) has a number of insertion holes (208). The interior of the insertion holes (208) is adapted to the outer surfaces of two fixing bolts (204).
6. A split-type rebar connecting sleeve with locking function according to claim 2, characterized in that: The outer surfaces of the first sleeve (1) and the second sleeve (201) are hinged with four clamping blocks (301). Each clamping block (301) has a first threaded ring (302) on its outer surface. Each clamping block (301) has two spring bodies (303) fixedly installed inside its interior. Each pair of spring bodies (303) has a rubber block (304) fixedly installed at their ends. There are two locking rings (305). Each locking ring (305) has a second threaded ring inside its interior. The first threaded ring (302) is adapted to the second threaded ring.