Reinforcing steel bar connecting sleeve structure

Abstract

The utility model relates to the field of reinforcing steel bar connecting fittings, in particular to a reinforcing steel bar connecting sleeve structure, which comprises an inner sleeve body and two outer sleeves, the inner sleeve body comprises three connecting sheets, the reinforcing steel bar connecting sleeve structure is characterized by further comprising a soft arc-shaped retaining strip, three sleeving rings are arranged on the arc-shaped retaining strip, and the three sleeving rings are respectively sleeved on the three connecting sheets; the opposite side walls of every two adjacent connecting pieces are spiral curved surfaces parallel to each other. A plurality of connecting pieces can be conveniently and quickly placed, the connecting pieces can be accurately and stably positioned, the probability that the connecting pieces are misplaced and inclined when placed can be effectively reduced, and therefore convenience, efficiency and accuracy of steel bar connection can be improved. And the connecting pieces can be limited and guided, so that the connecting pieces can be positioned at very accurate and stable positions when the reinforcing steel bars are connected, the accuracy and the stability of connecting and positioning of the connecting pieces can be improved, and the connecting strength of the reinforcing steel bars can be improved.

Description

Technical Field

[0001] This utility model relates to the field of rebar connection accessories, and in particular to a rebar connection sleeve structure. Background Technology

[0002] Chinese patent document CN209163230U discloses a technical solution entitled "A Connecting Plate Assembly for a Rebar Connection Joint". This technical solution includes the following features: a connecting plate assembly for a rebar connection joint, connecting plates, a conical sleeve, and rebars. When two rebars need to be connected together, three or four connecting plates are used, and these connecting plates are placed around and against the ends of the two rebars. Two cones are used to tightly fit the ends of each connecting plate to achieve the rebar connection. Because each connecting piece is an independent component, and no other components restrain it during installation, the connecting pieces are held by hand to secure them to the ends of the two reinforcing bars. However, the force applied by hand is difficult to distribute evenly across each connecting piece. Furthermore, since each connecting piece is a heavy metal component (both the connecting pieces and the conical sleeve are made of metal to ensure the connection strength of the reinforcing bars), misalignment and skewness are prone to occur after installation. This makes it difficult to insert the conical sleeve, thus reducing the convenience, efficiency, and accuracy of the reinforcing bar connection. Simultaneously, because the opposite sidewalls of adjacent connecting pieces are flat, the restraining and guiding effect of adjacent connecting pieces is very limited. Therefore, the connecting pieces mainly rely on the compression of the inner wall of the conical sleeve for positioning. In addition, the ribbed surface of most reinforcing bars can exert a strong restraining effect on the connecting pieces, leading to low accuracy and stability in the connection positioning, and consequently, limited connection strength of the reinforcing bars. Therefore, it is essential to design a reinforcing bar connecting sleeve structure to solve the above-mentioned technical problems. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned problems and shortcomings by providing a rebar connection sleeve structure. This rebar connection sleeve structure can not only conveniently and quickly place several connecting pieces, but also facilitate accurate and stable positioning of each connecting piece. It can effectively reduce the probability of misalignment or skew during the placement of the connecting pieces, thereby improving the convenience, efficiency, and accuracy of rebar connection. Furthermore, it can also restrict and guide the connecting pieces, ensuring that each connecting piece is in a very accurate and stable position when connecting rebars, thus improving the accuracy and stability of the connection positioning and ultimately enhancing the strength of the rebar connection.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A steel bar connecting sleeve structure includes an inner cylinder and two outer sleeves. The inner cylinder includes three connecting pieces with radially arc-shaped cross-sections. The inner arc-shaped surfaces of the three connecting pieces together form a fitting hole. The inner hole of the outer sleeve is a conical hole with one end larger than the other. The two outer sleeves are respectively fitted onto the two ends of the inner cylinder. The structure is characterized by including a soft arc-shaped retaining strip. Three fitting rings are provided on the inner wall of the arc-shaped retaining strip and are evenly arranged side by side along the length of the arc-shaped retaining strip. The three fitting rings are respectively fitted onto the three connecting pieces. The opposite sidewalls of each pair of adjacent connecting pieces are mutually parallel helical curved surfaces.

[0006] Preferably, the outer wall of the connecting piece gradually approaches the inner wall of the connecting piece from its middle part to its two ends.

[0007] Preferably, the inner arc-shaped surface of the connecting piece is a threaded surface.

[0008] Preferably, the outer wall of the connecting piece is provided with an arc-shaped protrusion arranged around the fitting hole.

[0009] Preferably, the arc-shaped retaining strip and the three fitting rings are integrally formed soft plastic structures.

[0010] Preferably, a foldable groove is provided on the inner wall of the arc-shaped retaining strip between adjacent sleeve rings.

[0011] The beneficial effects of this utility model are as follows: The rebar connecting sleeve structure has a soft arc-shaped retaining strip, and three fitting rings are evenly arranged on the inner wall of the arc-shaped retaining strip. The three fitting rings are respectively fitted onto the three connecting pieces. This can accurately restrict the three connecting pieces together using the arc-shaped retaining strip and the three fitting rings. When installing, the arc-shaped retaining strip can be unfolded first, and then the three connecting pieces can accurately wrap around and abut against the ends of the two rebars. This not only makes it convenient and quick to install the three connecting pieces, but also facilitates accurate and stable positioning of each connecting piece. It can effectively reduce the probability of misalignment or skew during the installation of the connecting pieces, thereby improving the convenience, efficiency and accuracy of rebar connection. The opposite sidewalls of each pair of adjacent connecting plates are made into parallel spiral surfaces. This creates a restrictive and guiding effect between the sidewalls of adjacent connecting plates, so that each connecting plate can be in a very accurate and stable position when connecting reinforcing bars, and can also generate a spinning effect on the reinforcing bars. This helps the connecting plates to achieve a very accurate, stable and reliable connection effect, and thus helps to improve the strength of the reinforcing bar connection. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the connection state of this utility model (steel bars are not shown).

[0013] Figure 2This is a schematic diagram of the structure of this utility model before assembly.

[0014] Figure 3 This is one of the three-dimensional structural schematic diagrams of the connecting piece in this utility model.

[0015] Figure 4 This is the second three-dimensional structural diagram of the connecting piece in this utility model.

[0016] Figure 5 This is a three-dimensional structural diagram of the arc-shaped retaining strip in this utility model.

[0017] Figure 6 This is a schematic diagram of the arc-shaped retaining strip in its unfolded state in this utility model.

[0018] Figure 7 This is a structural schematic diagram of the outer sleeve in cross-section of this utility model. Detailed Implementation

[0019] like Figures 1 to 3 , Figures 5 to 7 As shown, the present invention discloses a steel bar connecting sleeve structure, comprising an inner cylinder 1 and two outer sleeves 2. The inner cylinder 1 includes three connecting pieces 11 with radially arc-shaped cross-sections. The inner arc-shaped surfaces of the three connecting pieces 11 together form a fitting hole 12. The inner hole of the outer sleeve 2 is a conical hole 21 with one end larger than the other. The two outer sleeves 2 are respectively fitted onto the two ends of the inner cylinder 1. To achieve the purpose of the invention, a soft arc-shaped retaining strip 3 is also included. Three fitting rings 31 are provided on the inner wall of the arc-shaped retaining strip 3, and the three fitting rings 31 are evenly arranged side by side along the length direction of the arc-shaped retaining strip 3. The three fitting rings 31 are respectively fitted onto the three connecting pieces 11. The opposite sidewalls of each pair of adjacent connecting pieces 11 are mutually parallel helical curved surfaces 111.

[0020] The rebar connection sleeve structure has a soft, arc-shaped retaining strip 3, and three fitting rings 31 are evenly arranged on the inner wall of the arc-shaped retaining strip 3. The three fitting rings 31 are respectively fitted onto the three connecting pieces 11. This can accurately restrict the three connecting pieces 11 together using the arc-shaped retaining strip 3 and the three fitting rings 31. When installing, the arc-shaped retaining strip 3 can be unfolded first, and then the three connecting pieces 11 can accurately wrap around and abut against the ends of the two rebars. This not only makes it convenient and quick to install the three connecting pieces 11, but also facilitates accurate and stable positioning of each connecting piece 11. It can effectively reduce the probability of misalignment or skew during the installation of the connecting pieces 11, thereby improving the convenience, efficiency and accuracy of rebar connection.

[0021] The opposing sidewalls of each pair of adjacent connecting pieces 11 are made into parallel spiral curved surfaces 111. This creates a restrictive and guiding effect between the sidewalls of adjacent connecting pieces 11, so that each connecting piece 11 can be in a very accurate and stable position when connecting reinforcing bars, and can generate a spinning effect on the reinforcing bars by each connecting piece 11. This helps the connecting pieces 11 to achieve a very accurate, stable and reliable connection effect, and thus helps to improve the strength of the reinforcing bar connection.

[0022] like Figure 2 and Figure 3 As shown, the outer wall of the connecting piece 11 gradually approaches the inner wall of the connecting piece 11 from its middle part to its two ends. This makes both ends of the inner cylinder 1 tapered with smaller outer ends and larger inner ends, matching the tapered holes 21 on the outer sleeve 2. This facilitates a more stable and reliable positioning of the inner cylinder 1 by the outer sleeve 2, thereby further improving the reliability and applicability of the steel bar connecting sleeve structure.

[0023] like Figure 3 As shown, the inner arc-shaped surface of the connecting piece 11 is a threaded surface 112. The threaded surface 112 provides a very strong interlocking effect on the reinforcing bars, thereby further improving the strength of the reinforcing bar connection.

[0024] like Figures 2 to 4 As shown, an arc-shaped protrusion 113 is provided on the middle of the outer wall of the connecting piece 11, surrounding the fitting hole 12. The arc-shaped protrusion 113 not only enhances the structural strength of the connecting piece 11, but also positions the fitting ring 31 and the outer sleeve 2. This allows the arc-shaped retaining strip 3 to provide a more accurate, stable, and reliable positioning effect on the three connecting pieces 11, and enables the outer sleeve 2 to be assembled with the three connecting pieces 11 very accurately, stably, and reliably when connecting reinforcing bars. This further improves the accuracy, stability, and reliability of the reinforcing bar connection, and thus helps to further improve the reliability and applicability of the reinforcing bar connecting sleeve structure.

[0025] like Figure 5 and Figure 6 As shown, the arc-shaped retaining strip 3 and the three fitting rings 31 are integrally formed soft plastic structures. This not only facilitates mass production and molding, but also improves manufacturing efficiency, reduces manufacturing costs, and facilitates a more stable and reliable positioning of the three connecting pieces 11, thereby helping to further improve the reliability and applicability of the steel bar connecting sleeve structure.

[0026] In the actual manufacturing process, soft plastic structures such as PVC, PE, PP or PS can be used to meet the needs of actual manufacturing and use.

[0027] like Figure 1 and Figure 2 As shown, both the connecting piece 11 and the outer sleeve 2 are made of metal. When connecting the reinforcing bars, the outer sleeve 2 is tightly fitted onto the inner cylinder 1. Therefore, the outer sleeve 2 exerts a great compressive force on the fitting ring 31 and the arc-shaped retaining strip 3. Since the fitting ring 31 and the arc-shaped retaining strip 3 are both made of soft plastic, the fitting ring 31 will naturally break during the compression process, and the arc-shaped retaining strip 3 will naturally be compressed and deformed and clamped between the two outer sleeves 2. This can prevent the fitting ring 31 and the arc-shaped retaining strip 3 from affecting the connecting piece 11's clamping of the reinforcing bars, and can also prevent the fitting ring 31 and the arc-shaped retaining strip 3 from affecting the tight fitting of the outer sleeve 2 onto the inner cylinder 1. This can meet the normal connection requirements of the reinforcing bars.

[0028] like Figure 5 and Figure 6 As shown, a foldable groove 32 is provided on the inner wall of the arc-shaped retaining strip 3 between adjacent sleeve rings 31. This improves the ease of unfolding the arc-shaped retaining strip 3, thereby improving the ease of use, so that the three connecting pieces 11 can quickly wrap around and abut against the ends of the two steel bars, which further improves the ease of operation.

Claims

1. A reinforcing steel bar connecting sleeve structure, comprising an inner sleeve (1) and two outer sleeves (2), the inner sleeve (1) comprises three connecting pieces (11) with circular arc radial section, the inner arc surfaces of the three connecting pieces (11) jointly form a sleeving hole (12), the inner hole of the outer sleeve (2) is a taper hole (21) with one end large and the other end small, and the two outer sleeves (2) are sleeved at the two ends of the inner sleeve (1) respectively, characterized in that: The arc-shaped retaining strip (3) is soft, and three sleeving rings (31) are arranged on the inner wall of the arc-shaped retaining strip (3) and evenly arranged side by side along the length direction of the arc-shaped retaining strip (3), and the three sleeving rings (31) are sleeved on the three connecting sheets (11) respectively.

2. A reinforcing bar coupling sleeve structure according to claim 1, characterised in that: The outer wall of the connecting sheet (11) gradually approaches the inner wall of the connecting sheet (11) from the middle part to the two ends.

3. A reinforcing bar coupling sleeve structure according to claim 1, characterised in that: The inner arc-shaped surface of the connecting sheet (11) is a screw thread surface (112).

4. A reinforcing bar coupling sleeve structure according to claim 1, characterised in that: An arc-shaped convex strip (113) is arranged on the middle part of the outer wall of the connecting sheet (11) and surrounds the sleeving hole (12).

5. A reinforcing bar coupling sleeve structure according to claim 1, characterised in that: The arc-shaped retaining strip (3) and the three sleeving rings (31) are integrally formed of soft plastic.

6. A reinforcing bar coupling sleeve structure according to claim 1 or 5, characterised in that: An easy-to-fold groove (32) is arranged on the inner wall of the arc-shaped retaining strip (3) between the adjacent sleeving rings (31).

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