Tooth-shaped clamping ring provided with ratchets and applied to steel pipe fitting

Abstract

The utility model provides a tooth-shaped clamping ring provided with ratchets and applied to a steel pipe fitting. The tooth-shaped clamping ring comprises a C-shaped clamping ring body. A plurality of ratchets distributed at intervals in the circumferential direction of the clamping ring body are arranged on the inner wall of the clamping ring body, and each ratchet is located in the middle of the clamping ring body in the radial direction. According to the utility model, the occlusion depth of the pipe is deeper, namely the clamping and pressing firmness of the tooth-shaped clamping ring and the pipe fitting can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe connection accessories, in particular to a toothed clamping ring with ratchet teeth used for steel pipe fittings. Background Art

[0002] As a new type of pipe connection method, the toothed ring clamp connection is a product born under the inevitable trend of green building development, in which stainless steel pipes mainly connected by clamping, ferrules and other cold connections replace galvanized pipes connected by traditional threaded and welded connections.

[0003] The gear ring is the main component that provides resistance to pull-out in the gear ring clamp connection. The quality of the gear ring determines the upper limit of the maximum water pressure that the pipe fittings of the same specification can withstand.

[0004] Currently, most companies on the market use gear rings with bidirectional ratchets. Although this design can eliminate the possibility of the gear ring being installed upside down, it is undeniable that the bidirectional ratchet structure significantly reduces the pull-out resistance of the gear ring, which in turn affects the overall performance of the pipe fitting. During the extreme test, the overall performance is not good. At a lower pressure level, the pipe fitting and the pipe will slip, and when the pressure is further increased, the pipe will fall off directly. In other words, the existing gear ring has the disadvantage of poor clamping strength on the pipe fitting. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a toothed clamping ring with ratchet teeth for use in steel pipe fittings, which can have a deeper bite depth on the pipe, that is, can improve the clamping firmness between the toothed clamping ring and the pipe fitting.

[0006] The utility model provides a toothed clamping ring with ratchet teeth for use on steel pipe fittings, comprising a C-shaped clamping ring body; a plurality of ratchets spaced apart along the circumferential direction of the clamping ring body are arranged on the inner wall of the clamping ring body, and each ratchet tooth is located in the middle of the radial direction of the clamping ring body.

[0007] The several ratchets in the present invention form a unidirectional ratchet structure. Compared with the existing bidirectional ratchets, the unidirectional ratchets have a smaller contact area with the pipe under the same volume. Therefore, under the same clamping pressure, the bite depth of the pipe is deeper, and a greater pull-out resistance can be provided. Moreover, the tooth tip of the ratchet is sharper than other ratchets, which further reduces the contact area with the pipe and can better bite the pipe, that is, it can improve the clamping firmness of the toothed clamping ring and the pipe fitting. In addition, since each ratchet is located in the middle of the radial direction of the clamping ring body, when the clamping ring body is squeezed, the clamping ring body can more reliably support each ratchet to ensure that each ratchet can reliably bite into the outer wall of the pipe.

[0008] In one possible embodiment, at least one notch is provided on one side of the radial direction of the clamp body. After providing at least one notch on one side of the radial direction of the clamp body, the assembler can identify the direction of the toothed clamp through the notch during the process of assembling the toothed clamp into the pipe fitting, which can help the assembler quickly identify the direction of the toothed clamp, thereby speeding up assembly efficiency and reducing error rate.

[0009] In one possible embodiment, a plurality of notches are provided on one side of the snap ring body in the radial direction, and the plurality of notches are spaced apart along the circumferential direction of the snap ring body; by providing a plurality of notches on one side of the snap ring body in the radial direction, and the plurality of notches are spaced apart along the circumferential direction of the snap ring body, it is possible to further facilitate the assembler to observe the direction of the notches and identify the direction of the toothed snap ring, thereby further accelerating the assembly efficiency and reducing the error rate.

[0010] In one possible embodiment, each ratchet is formed by stamping the retaining ring body; by adopting this structure, not only the advantage of convenient ratchet processing is achieved, but also the advantage of high overall connection strength between the ratchet and the retaining ring body is achieved. Therefore, when the toothed retaining ring is subjected to extrusion force, the ratchet can more reliably engage with the pipe, thereby providing stronger resistance to pipe pull-out.

[0011] In one possible embodiment, the tooth tip of each ratchet forms a right-angled triangle structure, and one of the right-angled sides of each tooth tip extends toward the middle of the clamping ring body along the radial direction of the clamping ring body; by setting the tooth tip of the ratchet in this form, when the toothed clamping ring is subjected to extrusion force, the ratchet can more reliably bite the pipe, that is, the bite depth of the ratchet on the pipe can be increased, thereby providing a stronger pull-out resistance of the pipe.

[0012] In one possible embodiment, the oblique side of the tooth tip forms an angle A with the axial direction of the clasp body, and the angle A is 50 degrees. By adopting a tooth tip of this size, when the toothed clasp is subjected to extrusion force, the tooth tip of the ratchet can more reliably bite the pipe, that is, the bite depth of the ratchet on the pipe can be further increased, thereby providing a stronger pull-out resistance of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a rear view structural diagram of the utility model;

[0015] Figure 3 It is a cross-sectional view of the ratchet relative to the clasp body. DETAILED DESCRIPTION

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0018] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] See also Figure 1-3 As shown, an embodiment of the present application discloses a toothed clamping ring with ratchet teeth for use on steel pipe fittings, comprising a "C"-shaped clamping ring body 1; a plurality of ratchets 11 are provided on the inner wall of the clamping ring body 1 and are spaced apart along the circumferential direction of the clamping ring body 1, and each ratchet tooth 11 is located in the middle of the radial direction of the clamping ring body 1.

[0021] At least one notch 12 is provided on one side of the radial direction of the snap ring body 1. By providing at least one notch on one side of the radial direction of the snap ring body, the assembler can identify the direction of the toothed snap ring through the notch during the process of assembling the toothed snap ring into the pipe fitting, which can help the assembler quickly identify the direction of the toothed snap ring, thereby speeding up assembly efficiency and reducing error rate.

[0022] A plurality of notches 12 are provided on one side of the radial direction of the snap ring body 1, and the plurality of notches 12 are spaced apart along the circumferential direction of the snap ring body 1; by providing a plurality of notches on one side of the radial direction of the snap ring body, and the plurality of notches are spaced apart along the circumferential direction of the snap ring body, it is possible to further facilitate the assembler to observe the direction of the notches and identify the direction of the toothed snap ring, thereby further accelerating the assembly efficiency and reducing the error rate.

[0023] Each ratchet 11 is formed by stamping the clasp body 1; by adopting this structure, not only the advantage of convenient ratchet processing is achieved, but also the advantage of high overall connection strength between the ratchet and the clasp body is achieved. Therefore, when the toothed clasp is subjected to extrusion force, the ratchet can more reliably engage the pipe, thereby providing stronger resistance to pipe pull-out.

[0024] The tooth tip 111 of each ratchet 11 forms a right-angled triangle structure, and one of the right-angled sides of each tooth tip 111 extends toward the middle of the clamping ring body 1 along the radial direction of the clamping ring body 1; by setting the tooth tip of the ratchet to this form, when the toothed clamping ring is subjected to extrusion force, the ratchet can more reliably bite the pipe, that is, the bite depth of the ratchet on the pipe can be increased, thereby providing a stronger pull-out resistance of the pipe.

[0025] The hypotenuse of the tooth tip 111 forms an angle A with the axial direction of the clamp body 1, and the angle A is 50 degrees. By adopting a tooth tip of this size, when the toothed clamp is subjected to extrusion force, the tooth tip of the ratchet can more reliably bite the pipe, that is, the bite depth of the ratchet on the pipe can be further increased, thereby providing a stronger pull-out resistance of the pipe.

[0026] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A ratchet-toothed snap ring for use on steel pipe fittings, comprising a C-shaped snap ring body (1); characterized in that: A plurality of ratchet teeth (11) are provided on the inner wall of the snap ring body (1) and are spaced apart along the circumferential direction of the snap ring body (1), and each of the ratchet teeth (11) is located in the middle of the snap ring body (1) in the radial direction.

2. The ratchet toothed snap ring for steel pipes according to claim 1, characterized in that: At least one notch (12) is provided on one side of the snap ring body (1) in the radial direction.

3. The ratchet toothed snap ring for steel pipes according to claim 2, characterized in that: A plurality of notches (12) are provided on one side of the snap ring body (1) in the radial direction, and the plurality of notches (12) are distributed at intervals along the circumferential direction of the snap ring body (1).

4. The toothed snap ring with ratchet teeth for use on steel pipes according to any one of claims 1 to 3, characterized in that: Each ratchet (11) is formed by stamping the snap ring body (1).

5. The ratchet toothed snap ring for steel pipes according to any one of claims 1 to 3, characterized in that: The tooth tip (111) of each ratchet (11) forms a right-angled triangle structure, and one of the right-angled sides of each tooth tip (111) extends toward the middle of the clamping ring body (1) along the radial direction of the clamping ring body (1).

6. The ratchet toothed snap ring for steel pipes according to claim 5, characterized in that: The oblique side of the tooth tip (111) forms an angle A with the axial direction of the snap ring body (1), and the angle A is 50 degrees.

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