Corrugated pipe connecting piece of cable

Abstract

The utility model relates to a corrugated pipe connecting piece for a cable, and the connecting piece comprises a plug which is provided with an external thread segment at one end; clamping teeth are arranged on the inner wall of the sealing pipe; the sealing pipe is arranged on the corrugated pipe in a sleeving mode, and the clamping teeth are clamped into wave troughs of the outer wall of the corrugated pipe. The pipe joint comprises a first pipe body section, a second pipe body section and a third pipe body section which are arranged in the axial direction. The first pipe body section is sleeved outside the plug in a threaded manner; the second pipe body section is arranged on the sealing pipe in a sleeving manner; the third pipe body section is arranged on the corrugated pipe in a sleeving manner; the inner diameter of the third pipe body section is smaller than the outer diameter of the sealing pipe, the inner diameter of the second pipe body section is larger than the inner diameter of the third pipe body section, so that a first step face is formed between the second pipe body section and the third pipe body section, and the first step face abuts against the end face, away from the plug, of the sealing pipe. The connecting strength and the sealing performance between the pipe joint and the corrugated pipe are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile wiring harness processing, in particular to a corrugated pipe connecting piece of a cable. BACKGROUND

[0002] In the automobile wiring harness processing process, a plurality of wiring harnesses are integrated into a cable, and a corrugated pipe is usually arranged at the plug position of the cable end to prevent water and dust, and the connection effect of the corrugated pipe and the plug is an important factor affecting the protection effect. The traditional connection mode is to arrange an elastic piece on the inner wall of the connecting head, so that the elastic piece is clamped into the wave trough of the corrugated pipe, and the connecting head is threadedly connected with the plug. However, the elastic piece may be reduced in elasticity or even fail due to impact or vibration in the use process, thereby reducing the sealing property and the connection strength; and the elastic piece needs to have a certain rebound space, so that a gap is always present between the elastic piece and the connecting head, thereby further reducing the sealing effect.

[0003] For example, the utility model patent with the publication number CN206478358U discloses a straight insertion type corrugated pipe joint, which connects the joint with the corrugated pipe by clamping the engaging teeth into the wave crest of the corrugated pipe through the elastic part. However, the elastic part may be reduced in elasticity or even fail due to impact, vibration, aging and other factors in the use process, thereby reducing the connection strength between the joint and the corrugated pipe; and a gap is present between the engaging teeth, thereby reducing the sealing property between the joint and the sealing pipe. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a corrugated pipe connecting piece of a cable, and the specific technical scheme is as follows.

[0005] A corrugated pipe connecting piece of a cable, comprising:

[0006] a plug, one end of which is provided with an external thread segment;

[0007] a sealing pipe, the inner wall of which is provided with a clamping tooth; the sealing pipe is sleeved on the corrugated pipe, and the clamping tooth is clamped into the wave trough of the outer wall of the corrugated pipe;

[0008] a pipe joint, comprising a first pipe body segment, a second pipe body segment and a third pipe body segment arranged in the axial direction; the first pipe body segment is threadedly sleeved on the plug; the second pipe body segment is sleeved on the sealing pipe; the third pipe body segment is sleeved on the corrugated pipe; the inner diameter of the third pipe body segment is smaller than the outer diameter of the sealing pipe, and the inner diameter of the second pipe body segment is larger than the inner diameter of the third pipe body segment, so that a first stepped surface is formed between the second pipe body segment and the third pipe body segment, and the first stepped surface abuts against the end surface of the sealing pipe away from the plug.

[0009] Further, the end of the plug is provided with a plug-in pipe, and the plug-in pipe is inserted into the corrugated pipe and abuts against the inner wall of the corrugated pipe.

[0010] Further, the outer diameter of the plug-in pipe is smaller than the outer diameter of the outer threaded section, so that a second stepped surface is formed between the plug-in pipe and the outer threaded section; the second stepped surface is in abutment with an end surface of the sealing pipe away from the first stepped surface.

[0011] Further, the sealing pipe comprises at least two sub-pipe bodies uniformly arranged around the axis, and the angle corresponding to the arc of a single sub-pipe body is not more than 180°.

[0012] Further, the inner wall of the second pipe body section is in abutment with the outer wall of the sub-pipe body, and the sub-pipe body is compressed so that the clamping teeth are clamped into the valleys of the outer wall of the corrugated pipe.

[0013] Further, the adjacent sub-pipe bodies are in abutment with each other, so that the angle corresponding to the sum of the arcs of all the sub-pipe bodies is 360°.

[0014] Further, the inner wall of the sealing pipe is provided with a plurality of clamping teeth arranged along the axis, and a groove is formed between the adjacent two clamping teeth, and the inner wall of the groove is in abutment with the outer wall of the crest of the corrugated pipe.

[0015] Beneficial effects: The corrugated pipe connecting piece provided by the utility model connects the corrugated pipe and the plug by clamping the clamping teeth on the sealing pipe into the valleys of the outer wall of the corrugated pipe, and then connecting the pipe joint and the plug by threads and making the pipe joint abut against the sealing pipe. The clamping teeth do not have problems such as fatigue failure, and the cooperation of the clamping teeth and the valleys of the outer wall of the corrugated pipe can reduce or even avoid the gap between the corrugated pipe and the sealing pipe, and improve the connection strength and the sealing performance between the pipe joint and the corrugated pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 It is an overall structure schematic view when the corrugated pipe connecting piece is connected with the plug;

[0018] Figure 2 It is a sectional view when the corrugated pipe connecting piece is connected with the plug;

[0019] Figure 3 It is a sectional view of the pipe joint;

[0020] Figure 4 It is an explosion schematic view of the corrugated pipe connecting piece;

[0021] Figure 5 is a schematic view of a sub-pipe body.

[0022] Reference signs: 1, plug; 2, sealing pipe; 3, pipe joint; 4, corrugated pipe;

[0023] 11, male thread section; 12, plug-in pipe; 13, second stepped surface;

[0024] 21, clamping tooth; 22, sub-pipe body;

[0025] 31, first pipe body section; 32, second pipe body section; 33, third pipe body section; 34, first stepped surface. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein without departing from the spirit of the present application, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0029] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", and the like, should be construed broadly and can be either fixed or detachable connections, or integrally formed; can be either mechanical or electrical connections; can be direct or indirect connections, or internal or mutual interaction between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a mediating element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a mediating element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0032] Embodiment

[0033] Referring to Figure 1 And Figure 2 As shown in the figure, the embodiment provides a corrugated pipe 4 connector of a cable, which comprises a plug 1, a sealing pipe 2 and a pipe joint 3. One end of the plug 1 is provided with an external thread section 11. The inner wall of the sealing pipe 2 is provided with a clamping tooth 21; the sealing pipe 2 is sleeved on the corrugated pipe 4, so that the clamping tooth 21 is clamped into the trough of the outer wall of the corrugated pipe 4. By clamping the clamping tooth 21 into the trough of the outer wall of the corrugated pipe 4, the sealing pipe 2 is connected with the corrugated pipe 4.

[0034] Referring to Figure 4As shown, the pipe joint 3 comprises a first pipe body segment 31, a second pipe body segment 32 and a third pipe body segment 33 arranged along the axial direction of the pipe joint 3; the first pipe body segment 31, the second pipe body segment 32 and the third pipe body segment 33 are integrated and can be processed by integral forming process. The inner wall of the first pipe body segment 31 is provided with internal threads, so that the first pipe body segment 31 is threadedly sleeved on the plug 1, thereby connecting the pipe joint 3 with the plug 1. The second pipe body segment 32 is sleeved on the sealing pipe 2, and the inner wall of the second pipe body segment 32 is smooth, so that the inner wall of the second pipe body abuts against the sealing pipe 2. The third pipe body segment 33 is sleeved on the corrugated pipe 4. The inner diameter of the third pipe body segment 33 is smaller than the outer diameter of the sealing pipe 2, and the inner diameter of the second pipe body segment 32 is larger than the inner diameter of the third pipe body segment 33, so that a first stepped surface 34 is formed between the second pipe body segment 32 and the third pipe body segment 33, and the first stepped surface 34 abuts against the end surface of the sealing pipe 2 away from the plug 1. By abutting the first stepped surface 34 in the pipe joint 3 against the end surface of the sealing pipe 2, the relative position of the pipe joint 3 and the sealing pipe 2 is limited, thereby connecting the corrugated pipe 4 with the plug 1.

[0035] The corrugated pipe 4 connector provided by the embodiment connects the corrugated pipe 4 with the plug 1 by clamping the clamping tooth 21 on the sealing pipe 2 into the wave trough of the outer wall of the corrugated pipe 4, and then threadedly connecting the pipe joint 3 with the plug 1 and abutting the pipe joint 3 against the sealing pipe 2. The clamping tooth 21 does not have problems such as fatigue failure, and the cooperation of the clamping tooth 21 and the wave trough of the outer wall of the corrugated pipe 4 can reduce or even avoid the gap between the corrugated pipe 4 and the sealing pipe 2, thereby improving the connection strength and sealing performance between the pipe joint 3 and the corrugated pipe 4.

[0036] Specifically, with reference to Figure 2 As shown, the end of the plug 1 is provided with a plug-in pipe 12 which is inserted into the corrugated pipe 4 and abuts against the inner wall of the corrugated pipe 4. Generally, the corrugated pipe 4 of the cable is made of plastic or rubber material. By inserting the plug-in pipe 12 into the corrugated pipe 4 and abutting the plug-in pipe 12 against the inner wall of the corrugated pipe 4, the inside of the corrugated pipe 4 abuts against the plug-in pipe 12, and the outside of the corrugated pipe 4 abuts against the sealing pipe 2, so that the radial deformation of the corrugated pipe 4 can be avoided, thereby ensuring that the clamping tooth 21 can always be clamped into the wave trough and ensuring that the corrugated pipe 4 can always be connected with the plug 1 during use.

[0037] Specifically, with reference to Figure 3 and Figure 4 As shown, the outer diameter of the plug-in pipe 12 is smaller than the outer diameter of the outer threaded segment 11, so that a second stepped surface 13 is formed between the plug-in pipe 12 and the outer threaded segment 11; the second stepped surface 13 abuts against the end surface of the sealing pipe 2 away from the first stepped surface 34. The two ends of the sealing pipe 2 are respectively abutted by the first stepped surface 34 and the second stepped surface 13, thereby ensuring the stability of the relative position between the sealing pipe 2 and the plug 1 and ensuring the connection strength.

[0038] Specifically, referring to Figure 4 In the embodiment, the sealing pipe 2 comprises two sub-pipe bodies 22 arranged uniformly around the axis of the corrugated pipe 4, and the angle corresponding to the arc of a single sub-pipe body 22 is 180°. The sub-pipe body 22 is sleeved on the corrugated pipe 4 in a split structure, which reduces the difficulty of installation.

[0039] In other embodiments, the sealing pipe 2 can also be divided into more than two sub-pipe bodies 22, so that the angle corresponding to the arc of a single sub-pipe body 22 is not more than 180°, and the adjacent sub-pipe bodies 22 abut against each other, so that the angle corresponding to the sum of the arcs of all the sub-pipe bodies 22 is 360°.

[0040] Specifically, the inner wall of the second pipe body segment 32 abuts against the outer wall of the sub-pipe body 22 and presses the sub-pipe body 22 so that the clamping teeth 21 are clamped into the valleys of the outer wall of the corrugated pipe 4. The stable connection between the sub-pipe body 22 and the corrugated pipe 4 is ensured.

[0041] Specifically, referring to Figure 2 As shown in the figure, the inner wall of the sealing pipe 2 is provided with a plurality of clamping teeth 21 arranged along the axis of the sealing pipe 2, and a groove is formed between the adjacent two clamping teeth 21, and the inner wall of the groove abuts against the outer wall of the crest of the corrugated pipe 4. The crest of the corrugated pipe 4 can be clamped into the groove, thereby limiting the deformation of the axis of the crest and ensuring the connection strength; and the plurality of clamping teeth 21 are arranged to cooperate with the valleys, which can further improve the connection strength and sealing effect.

[0042] The connection process is as follows:

[0043] First, the corrugated pipe 4 provided with the cable is passed through the pipe joint 3; then the cable is connected with the plug 1 to realize the conduction between the cable and the plug 1; then the two sub-pipe bodies 22 are sleeved on the corrugated pipe 4 so that the clamping teeth 21 are clamped into the valleys; finally, the pipe joint 3 is moved towards the direction of the plug 1, the sub-pipe body 22 enters the second pipe body segment 32, the pipe joint 3 is tightened with the plug 1, and the two ends of the sealing pipe 2 abut against the first stepped surface 34 and the second stepped surface 13, respectively.

[0044] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0045] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A corrugated pipe coupling for cables, characterized in that The utility model relates to a kind of pipe joint, including: Plug, one end is provided with external thread section; Sealing pipe, inner wall is provided with catch tooth;The sealing pipe is sleeved on corrugated pipe, and catch tooth is clamped into the trough of the outer wall of corrugated pipe; Pipe joint, including the first pipe body section, second pipe body section and third pipe body section arranged in axial direction;The first pipe body section is threaded on plug outer;The second pipe body section is sleeved on sealing pipe;The third pipe body section is sleeved on corrugated pipe;The inner diameter of third pipe body section is less than the outer diameter of sealing pipe, the inner diameter of second pipe body section is greater than the inner diameter of third pipe body section, so that first step surface is formed between second pipe body section and third pipe body section, and the end surface of sealing pipe away from plug is abutted with first step surface.

2. A corrugated tubing connector for a cable according to claim 1, wherein, The end of the plug is provided with a plug-in tube, which is inserted into the corrugated pipe and abuts against the inner wall of the corrugated pipe.

3. A corrugated tubing connector for a cable according to claim 2, wherein, The outer diameter of the plug-in tube is smaller than the outer diameter of the external thread section, so that a second step surface is formed between the plug-in tube and the external thread section; the end surface of the sealing pipe away from the first step surface is abutted with the second step surface.

4. A corrugated tubing connector for a cable according to claim 1, wherein, The sealing pipe includes at least two sub-pipe bodies uniformly arranged around the axis, and the angle corresponding to the arc of a single sub-pipe body is not more than 180°.

5. A corrugated tubing connector for a cable according to claim 4, wherein, The inner wall of the second pipe body section abuts against the outer wall of the sub-pipe body and compresses the sub-pipe body so that the catch tooth is clamped into the trough of the outer wall of the corrugated pipe.

6. A corrugated tubing connector for a cable according to claim 4, wherein, The adjacent sub-pipe bodies abut against each other, so that the angle corresponding to the sum of the arcs of all sub-pipe bodies is 360°.

7. A corrugated tubing connector for a cable according to claim 1, wherein, The inner wall of the sealing pipe is provided with a plurality of catch teeth arranged along the axis, and a groove is formed between the adjacent two catch teeth, and the inner wall of the groove abuts against the outer wall of the crest of the corrugated pipe.

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