阅读说明：本技术 防水电缆接头及工程机械防水线束 (Waterproof cable joint and engineering machinery waterproof wire harness ) 是由 邓杰 伍先平 于 2019-09-23 设计创作，主要内容包括：本发明提供一种防水电缆接头,由于第一弹性部件和第二弹性部件均包括第一密封部分和第二密封部分,第一密封部分和第二密封部分沿第一弹性部件和第二弹性部件的轴向交替设置,第一密封部分和第二密封部分的柔软度不同,因此,第一密封部分和第二密封部分的变形是不同的,相当于在接头体与第一电缆和第二电缆之间设有多道密封圈,由此较好的填充了第一弹性部件和从第一弹性部件中穿过的第一电缆之间以及第二弹性部件和从第二弹性部件中穿过的第二电缆之间的间隙,达到了较好的密封效果,防止水渗入电缆接头内部,也就提高或改善了电缆接头的防水性能或密封性,并且设置较为简单。本发明另外提供一种包含前述防水电缆接头的工程机械防水线束。(The invention provides a waterproof cable joint, because the first elastic component and the second elastic component both comprise a first sealing part and a second sealing part, the first sealing part and the second sealing part are alternately arranged along the axial direction of the first elastic component and the second elastic component, and the softness of the first sealing part is different from that of the second sealing part, therefore, the deformation of the first sealing part is different from that of the second sealing part, which is equivalent to arranging a plurality of sealing rings between the joint body and the first cable and the second cable, thereby better filling the gaps between the first elastic component and the first cable passing through the first elastic component and between the second elastic component and the second cable passing through the second elastic component, achieving better sealing effect, preventing water from permeating into the cable joint, and improving the waterproof performance or the sealing performance of the cable joint, and the setting is simpler. The invention further provides a waterproof wiring harness of engineering machinery, which comprises the waterproof cable joint.)

1. A waterproof cable joint which characterized in that: the flexible pipe joint comprises a joint body (3), a first elastic component (4) and a second elastic component (5), wherein the joint body (3) is provided with an axial through hole, inner walls at two ends of the axial through hole are provided with the first elastic component (4) and the second elastic component (5), the first elastic component (4) and the second elastic component (5) respectively comprise a first sealing part (6) and a second sealing part (7), the first sealing part (6) and the second sealing part (7) are arranged along the axial direction of the first elastic component (4) and the axial direction of the second elastic component (5) in an alternating mode, and the first sealing part (6) and the second sealing part (7) are different in softness.

2. The watertight cable joint according to claim 1, wherein: the axial through hole comprises a first taper hole section, a second taper hole section and a middle cylindrical section, the diameters of the first taper hole section and the second taper hole section are gradually reduced from one side back to the cylindrical section to one side close to the cylindrical section, the outer walls of the first elastic component (4) and the second elastic component (5) are respectively conical surfaces matched with the inner walls of the first taper hole section and the second taper hole section, and the inner walls of the first elastic component (4) and the second elastic component (5) are cylindrical surfaces.

3. The watertight cable joint according to claim 2, wherein: the joint further comprises a first loose joint nut (8) and a second loose joint nut (9), the first loose joint nut (8) is in threaded connection with the outer wall of the joint body (3) at a first taper hole section, the first loose joint nut (8) is abutted with the first elastic component (4), the first loose joint nut (8) is used for pressing the first elastic component (4) to apply axial pressing force to the first elastic component (4), the second loose joint nut (9) is in threaded connection with the outer wall of the joint body (3) at a second taper hole section, the second loose joint nut (9) is abutted with the second elastic component (5), and the second loose joint nut (9) is used for pressing the second elastic component (5) to apply axial pressing force.

4. The watertight cable joint according to claim 3, wherein: the first elastic component (4) and the second elastic component (5) are partially positioned on the outer side of the joint body (3).

5. The watertight cable joint according to claim 3, wherein: the first loose joint nut (8) and the second loose joint nut (9) are both made of stainless steel materials.

6. The watertight cable joint according to claim 2, wherein: the conicity of the inner walls of the first taper hole section and the second taper hole section is in the range of 10-40 degrees.

7. The watertight cable joint according to claim 6, wherein: the conicity of the inner walls of the first taper hole section and the second taper hole section is 20 degrees.

8. The watertight cable joint according to any one of claims 2 to 6, wherein: the connector is characterized by further comprising a sealing element (11), an annular protrusion (10) is arranged on the inner wall of the middle section of the connector body (3), the sealing element (11) abuts against the inner wall of the annular protrusion (10), and the sealing element (11) is used for sealing abutting surfaces of two cables inserted from two ends of the axial through hole respectively.

9. The watertight cable joint according to claim 8, wherein: the sealing element (11) is an annular sealing ring, and the sealing element (11) is made of rubber materials.

10. The utility model provides a waterproof pencil of engineering machine tool which characterized in that: comprising a watertight cable joint according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of engineering machinery wiring harnesses, in particular to a waterproof cable joint and an engineering machinery waterproof wiring harness comprising the same.

Background

In the prior art, the waterproof wire harness of the engineering machinery is required to be used in the engineering machinery to ensure the waterproofness of the wire harness, and the wire harness is easily damped in the running process of the engineering machinery due to the influence of the environment or the steam generated by the wire harness, so that the wire harness is easily damped at a cable joint, the engineering machinery is enabled to break down, even an electric shock phenomenon occurs, and the life safety of personnel is endangered.

The cable connector is also called a cable head. After the cable is laid, the sections of the cable must be connected together in order to form a continuous line, and these connections are called cable connectors. The cable joints at the middle of the cable run are called intermediate joints and the cable joints at the two ends of the run are called termination joints. The cable joint is used for locking and fixing the incoming and outgoing lines, and plays a role in water resistance, dust prevention and vibration prevention.

When the cable joint is used, the incoming cable and the outgoing cable are inserted into the cable joint, and the two cables are connected. The main function of the cable joint comprises that a circuit is unobstructed, the cable is kept sealed, if the sealing is poor, moisture can invade the interior of the cable, and the waterproof performance of the cable joint of the existing engineering machinery waterproof wire harness is required to be further improved.

Disclosure of Invention

In order to improve or solve at least one technical problem of the background art, an object of the present invention is to provide a waterproof cable joint to improve or improve waterproof performance or sealability of the cable joint.

The invention also aims to provide a waterproof wiring harness of engineering machinery comprising the waterproof cable joint.

In order to solve the above problems, in one aspect, the present invention provides a waterproof cable joint, including a joint body, a first elastic member, and a second elastic member, the joint body being disposed in a hollow manner, the joint body being provided with an axial through hole, the first elastic member and the second elastic member being disposed on inner walls of two ends of the axial through hole, the first elastic member and the second elastic member each including a first sealing portion and a second sealing portion, the first sealing portion and the second sealing portion being alternately disposed along an axial direction of the first elastic member and the second elastic member, and the first sealing portion and the second sealing portion having different flexibility.

As a further improvement of the waterproof cable joint, the axial through hole includes a first taper hole section and a second taper hole section at two ends and a middle cylindrical section, the diameters of the first taper hole section and the second taper hole section are both gradually reduced from one side opposite to the cylindrical section to one side close to the cylindrical section, the outer walls of the first elastic component and the second elastic component are respectively conical surfaces matched with the inner walls of the first taper hole section and the second taper hole section, and the inner walls of the first elastic component and the second elastic component are both cylindrical surfaces.

As a further improvement of the waterproof cable joint, the waterproof cable joint further includes a first union nut and a second union nut, the first union nut is in threaded connection with the outer wall of the joint body at the first taper hole section, and the first union nut abuts against the first elastic member, the first union nut is used for pressing the first elastic member to apply axial pressing force to the first elastic member, the second union nut is in threaded connection with the outer wall of the joint body at the second taper hole section, and the second union nut abuts against the second elastic member, and the second union nut is used for pressing the second elastic member to apply axial pressing force.

As a further improvement of the above-described waterproof cable joint, the first elastic member and the second elastic member are partially located outside the joint body.

As a further improvement of the waterproof cable joint, the first loose joint nut and the second loose joint nut are both made of stainless steel materials.

As a further improvement of the above waterproof cable joint, the taper of the inner walls of the first tapered hole section and the second tapered hole section is in the range of 10 to 40 °.

As a further improvement of the above waterproof cable joint, the taper of the inner walls of the first taper hole section and the second taper hole section is 20 °.

As a further improvement of the waterproof cable joint, the waterproof cable joint further comprises a sealing element, wherein an annular protrusion is arranged on the inner wall of the middle section of the joint body, the sealing element abuts against the inner wall of the annular protrusion, and the sealing element is used for sealing the abutting surfaces of the two cables inserted from the two ends of the axial through hole respectively.

As a further improvement of the waterproof cable joint, the sealing element is an annular sealing ring and is made of rubber materials.

According to the waterproof cable joint, the first elastic component and the second elastic component respectively comprise the first sealing part and the second sealing part, the first sealing part and the second sealing part are alternately arranged along the axial direction of the first elastic component and the second elastic component, and the softness of the first sealing part is different from that of the second sealing part, so that the deformation of the first sealing part is different from that of the second sealing part, namely, a plurality of sealing rings are arranged between the joint body and the first cable and the second cable, and therefore gaps between the first elastic component and the first cable penetrating through the first elastic component and gaps between the second elastic component and the second cable penetrating through the second elastic component are filled well, a good sealing effect is achieved, water is prevented from penetrating into the cable joint, and the waterproof performance or the sealing performance of the cable joint is improved, the arrangement is simple, and the effect of a plurality of sealing rings can be achieved only by arranging one first elastic component and one second elastic component.

In another aspect, the invention provides a waterproof wire harness for engineering machinery, which comprises the waterproof cable joint according to any one of the above aspects.

Since the waterproof wire harness for the engineering machinery is provided with the waterproof cable joint, the waterproof wire harness for the engineering machinery has all the technical effects of the waterproof cable joint.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of a waterproof cable joint according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a waterproof cable joint according to a second embodiment of the present invention.

Fig. 3 is a schematic structural view of a waterproof cable joint according to a third embodiment of the present invention.

In the drawings:

1-first cable 2-second cable 3-connector body

4-first elastic member 5-second elastic member 6-first seal portion

7-second sealing part 8-first union nut 9-second union nut

10-annular projection 11-seal

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to the attached drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.

In the description of the present invention, it should be noted that the terms indicating orientation or positional relationship appearing are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and for simplicity of 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 should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified and limited, the specific meanings of the above terms in the present invention can be specifically understood by those skilled in the art.