Connector plastic part sealing device for electric wire

Abstract

The invention belongs to the field of electronic component sealing, and particularly relates to a connector plastic part sealing device for an electric wire. The invention discloses a connector plastic part sealing device for an electric wire, which is quick to fix and good in sealing effect. The device comprises a protective shell and the like, round through holes are formed in the left side and the right side of the protective shell and used for electric wires to penetrate through, the top of the protective shell is detachably connected with an upper cover through a clamping piece, air rings are arranged at the through holes in the left side and the right side of the protective shell, the butt joints penetrate through the inner sides of the air rings and stretch into the protective shell, and pressing pieces are arranged at the outer ends of the butt joints. The pressing piece replaces a bolt to tighten the opening of the butt joint, so that the operation is simpler and quicker; when the pull rod moves towards the inner side to reset, air in the hollow rod is pushed into the air bag column through the communicating pipe, and the air bag column arches up and is pressed on the outer surface of the electric wire, so that moisture is prevented from entering the protective shell.

Description

Technical Field

[0001] The invention belongs to the field of electronic component sealing, and in particular relates to a sealing device for a plastic joint of an electric wire. Background Art

[0002] Plastic sealing of wire connectors refers to the use of specific plastic materials and devices to wrap and seal the wiring parts to achieve waterproof, moisture-proof and insulation protection. This sealing measure is essential to ensure the safety and reliability of wire connections, especially in outdoor or humid environments.

[0003] When installing, the existing plastic sealing devices of the joints of the wires are usually fixed by bolts, and the bolt fixing needs to be tightened with tools. Especially when multiple bolts need to be installed to fix the sealing device, the process of tightening the bolts one by one is time-consuming, which reduces the overall installation efficiency. This shortcoming is particularly obvious in scenarios such as large-scale wiring projects or emergency repairs. At the same time, in some environments with vibration, the bolts are easily loosened, which leads to poor sealing effect.

[0004] Therefore, there is an urgent need to develop a plastic sealing device for a joint of an electric wire that has fast fixing and good sealing effect. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a plastic sealing device for a joint of an electric wire which has the advantages of quick fixing and good sealing effect.

[0006] The technical solution of the present invention is: a sealing device for plastic joints of electric wires, comprising a protective shell, a butt joint, an upper cover, a clamping piece, an air ring and a pressing piece, circular through holes are opened on both sides of the protective shell, the top of the protective shell is detachably connected with the upper cover through the clamping piece, air rings are arranged at the through holes on the left and right sides of the protective shell, the butt joint passes through the inner side of the air ring and extends into the protective shell, and a pressing piece is arranged at the outer end of the butt joint; its characteristic is that: the pressing piece comprises a hollow rod, a pull rod, a conical sleeve and a spring II, hollow rods parallel to its axis are symmetrically arranged on the front and rear outer sides of the butt joint, a pull rod is connected inside the hollow rod, a conical sleeve is slidably connected between the pull rods on the front and rear sides, and a spring II is connected between the conical sleeve and the pull rod.

[0007] Optionally, the clamping part includes an insert block, a concave insert rod, a spring I and a concave sleeve. Insert blocks are symmetrically arranged on the front and rear sides of the bottom of the upper cover. A circular through hole is opened on the insert block. A concave sleeve is arranged on the inner wall of the protective shell under the insert block. Concave insert rods are slidably connected to the protective shell on the front and rear sides of the insert block. The end of the concave insert rod passes through the through hole on the insert block, and a spring I is connected between the concave insert rod and the protective shell.

[0008] Optionally, a fixing part is also included. The fixing parts are arranged on both sides of the left and right sides of the protective shell. The fixing parts include a guide rod I, a connecting plate, a spring III, a guide rod II, a plug plate and a spring IV. The left and right parts of the protective shell are slidably connected with connecting plates through the guide rod I. The connecting plates are concave and symmetrically arranged. Spring III is connected between the connecting plate and the protective shell. Slots are evenly spaced circumferentially in the joint inside the protective shell. The front and rear inner walls of the connecting plate are slidably connected with the plug plate through the guide rod II. A spring IV is connected between the plug plate and the connecting plate.

[0009] Optionally, a tensioning piece is also included. The tensioning piece is arranged between the upper cover and the connecting plate. The tensioning piece includes a square frame and a wedge block. The square frame is symmetrically arranged on the upper inner side of the connecting plate, and a wedge block is fixedly connected to the upper cover above the square frame.

[0010] Optionally, a reinforcement piece is also included, which is connected between the connecting plate and the protective shell, and the reinforcement piece includes a mounting block, a reinforcement plate and a pushing block. The mounting blocks are fixedly connected to the upper middle part of the inner side of the left and right walls of the protective shell, and the mounting blocks extend inward through the connecting plate. The reinforcement plate is vertically slidably connected to the mounting block, and the bottom of the reinforcement plate is inserted into the slot on the docking joint. The pushing block is fixedly connected to the connecting plate above the reinforcement plate.

[0011] Optionally, the inner side of the pushing block is a downwardly inclined slope, and the inner side surface of the pushing block fits with the upper side surface of the reinforcement plate. When the pushing block moves inward, it can push the reinforcement plate to move downward.

[0012] Optionally, an interface seal is also included. The interface seal is arranged on the docking joint, and the interface seal includes a connecting tube, an airbag column and a spring V. The pull rod is slidably connected to the hollow rod, and an airbag column is arranged on the inner side of the docking joint. The airbag column and the hollow rod are connected through a connecting tube, and a spring V is connected between the pull rod and the hollow rod.

[0013] Optionally, a sealing reinforcement is also included. The sealing reinforcements are arranged at the four corners of the protective shell. The sealing reinforcements include a cylinder body, a piston rod, a spring VI and a connecting pipe. The cylinder body is vertically installed at the four corners of the protective shell. The piston rod is slidably arranged in the cylinder body. The piston rod passes through the upper wall of the cylinder body. A spring VI is connected between the piston rod and the cylinder body. A connecting pipe is connected between the bottom of the cylinder body and the adjacent air ring.

[0014] The present invention has the following advantages: the present invention uses a clamping piece instead of a bolt to tighten the opening of the docking joint, so the operation is simpler and faster; when the pull rod moves inward to reset, the gas in the hollow rod is pushed into the airbag column through the connecting pipe, and the airbag column arches, so that the airbag column is pressed against the outer surface of the wire to prevent moisture from entering the protective shell; the tensioning piece and the reinforcement piece fix the docking joint on the protective shell, so that the installation of the docking joint is more stable; the upper cover is covered on the top of the protective shell, driving the piston rod to move downward to press the gas in the cylinder into the air ring through the connecting pipe, so that the air ring expands, and after the air ring expands, it is close to the protective shell and the docking joint, thereby improving the sealing between the protective shell and the docking joint and preventing the entry of moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the internal structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of part of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping member of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the pressing member of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the fixing member of the present invention.

[0022] Figure 7 It is an enlarged view of the fixing member of the present invention.

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the tensioning member and the reinforcing member of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the interface seal of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the sealing reinforcement member of the present invention.

[0026] In the above drawings: 1-protective housing, 2-joint, 3-upper cover, 4-clamping piece, 41-insertion block, 42-concave insertion rod, 43-spring I, 44-concave sleeve, 5-air ring, 6-pressing piece, 61-hollow rod, 62-pull rod, 63-conical sleeve, 64-spring II, 7-fixing piece, 71-guide rod I, 72-connecting plate, 73-spring III, 74-slot, 75-guide rod Ⅱ, 76-insert plate, 77-spring IV, 8-tensioning piece, 81-square frame, 82-wedge block, 9-reinforcement piece, 91-mounting block, 92-reinforcement plate, 93-pushing block, 10-interface sealing piece, 101-airbag column, 102-connecting pipe, 103-spring V, 11-sealing reinforcement piece, 111-cylinder body, 112-piston rod, 113-spring VI, 114-connecting pipe. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0029] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] Embodiment: A plastic sealing device for a joint of an electric wire, such as Figure 1-Figure 6 As shown, it includes a protective shell 1, a docking joint 2, an upper cover 3, a clamping piece 4, an air ring 5 and a pressing piece 6. Circular through holes are provided on both sides of the protective shell 1 for passing the wires. The top of the protective shell 1 is detachably connected to the upper cover 3 through the clamping piece 4. Air rings 5 ​​are provided at the through holes on both sides of the protective shell 1. The docking joint 2 passes through the inner side of the air ring 5 and extends into the protective shell 1. The outer end of the docking joint 2 is provided with a pressing piece 6. The outer end of the docking joint 2 is a circle of sheets that are indented inward.

[0031] like Figure 4 and Figure 6 As shown, the clamping member 4 includes an insert block 41, a concave insert rod 42, a spring I 43 and a concave sleeve 44. The insert blocks 41 are symmetrically arranged on the front and rear sides of the bottom of the upper cover 3. A circular through hole is opened on the insert block 41. The inner wall of the protective shell 1 below the insert block 41 is provided with a concave sleeve 44. When the upper cover 3 is covered on the protective shell 1, the insert block 41 is inserted into the concave sleeve 44. The protective shell 1 on the front and rear sides of the insert block 41 is slidably connected with a concave insert rod 42. The end of the concave insert rod 42 passes through the through hole on the insert block 41, and a spring I 43 is connected between the concave insert rod 42 and the protective shell 1.

[0032] like Figure 5 As shown, the clamping member 6 includes a hollow rod 61, a pull rod 62, a conical sleeve 63 and a spring II 64. The outer side of the joint 2 is symmetrically provided with hollow rods 61 parallel to its axis in the front and rear directions. The pull rod 62 is connected inside the hollow rod 61. The pull rods 62 on the front and rear sides are slidably connected with a conical sleeve 63. The conical sleeve 63 is retracted from the inside to the outside. A spring II 64 is connected between the conical sleeve 63 and the pull rod 62.

[0033] like Figure 6 and Figure 7 As shown, it also includes a fixing member 7, and the fixing member 7 is arranged on both sides of the left and right sides of the protective shell 1. The fixing member 7 includes a guide rod I 71, a connecting plate 72, a spring III 73, a guide rod II 75, a plug plate 76 and a spring IV 77. The left and right parts of the protective shell 1 are slidably connected to the connecting plate 72 through the guide rod I 71. The connecting plate 72 is concave, and the connecting plate 72 is symmetrically arranged. The spring III 73 is connected between the connecting plate 72 and the protective shell 1. The joint 2 is provided with slots 74 at uniform intervals in the circumferential direction of the part inside the protective shell 1. The front and rear inner walls of the connecting plate 72 are slidable through the guide rod II 75. A plug plate 76 is connected, and a spring IV 77 is connected between the plug plate 76 and the connecting plate 72. After the docking joint 2 is inserted into the protective shell 1, the plug plate 76 is inserted into the slot 74; when the docking joint 2 needs to be removed, the plug plate 76 is pulled outward to leave the slot 74, and the docking joint 2 can be pulled outward with force. When installing the docking joint 2, the plug plate 76 is inserted into the slot 74, which can reinforce the docking joint 2 to prevent the docking joint 2 from being pulled out due to external force. At the same time, because the plug plate 76 is an inclined surface, it will not cause any obstruction to the docking joint 2 when inserting it, and it can be directly inserted, which facilitates the fixation of the docking joint 2.

[0034] like Figure 8As shown, a tensioning member 8 is also included. A tensioning member 8 is arranged between the upper cover 3 and the connecting plate 72. The tensioning member 8 includes a square frame 81 and a wedge block 82. The square frame 81 is symmetrically arranged on the upper inner side of the connecting plate 72. The wedge block 82 is fixedly connected to the upper cover 3 above the square frame 81 by bolts. The inclined surface of the wedge block 82 faces inward. When the upper cover 3 is covered on the top of the protective shell 1, the inclined surface of the wedge block 82 generates a force pushing the square frame 81 inward.

[0035] like Figure 8 As shown, a reinforcement member 9 is also included. A reinforcement member 9 is connected between the connecting plate 72 and the protective shell 1. The reinforcement member 9 includes a mounting block 91, a reinforcement plate 92 and a pushing block 93. The mounting blocks 91 are fixedly connected to the upper middle part of the inner side of the left and right walls of the protective shell 1 by bolts. The mounting blocks 91 extend inwardly through the connecting plate 72. The reinforcing plate 92 is vertically slidably connected to the mounting block 91. The bottom of the reinforcing plate 92 is inserted into the slot 74 on the docking head 2. The top of the reinforcing plate 92 is an inclined surface inclined inwardly. A pushing block 93 is fixedly connected to the connecting plate 72 above the reinforcing plate 92 by bolts. The inner side of the pushing block 93 is an inclined surface inclined downwardly. The inner side surface of the pushing block 93 fits with the upper side surface of the reinforcing plate 92. When the pushing block 93 moves inwardly, it can push the reinforcing plate 92 to move downward.

[0036] like Fig. 9 As shown, an interface seal 10 is also included. The interface seal 10 is arranged on the docking joint 2. The interface seal 10 includes a connecting pipe 102, an airbag column 101 and a spring V 103. The pull rod 62 is slidably connected to the hollow rod 61. The airbag column 101 is arranged on the inner side of the docking joint 2. The airbag column 101 is connected to the hollow rod 61 through the connecting pipe 102. The spring V 103 is connected between the pull rod 62 and the hollow rod 61. When the pull rod 62 moves in the left and right directions, gas can be injected into or extracted from the airbag column 101.

[0037] like Fig.10 As shown, a sealing reinforcement 11 is also included. The sealing reinforcement 11 is arranged at the four corners of the protective shell 1. The sealing reinforcement 11 includes a cylinder body 111, a piston rod 112, a spring VI 113 and a connecting pipe 114. The cylinder body 111 is vertically installed at the four corners of the protective shell 1. The piston rod 112 is slidably arranged in the cylinder body 111. The piston rod 112 passes through the upper wall of the cylinder body 111. When the upper cover 3 is covered on the top of the protective shell 1, it can push the piston rod 112 to move downward. A spring VI 113 is connected between the piston rod 112 and the cylinder body 111. A connecting pipe 114 is connected between the bottom of the cylinder body 111 and the adjacent air ring 5.

[0038] When using the device to install the wires, first pull the conical sleeve 63 outward, and the conical sleeve 63 moves outward to squeeze the spring II 64 first. When the elastic force of the spring II 64 after squeezing is greater than the elastic force of the spring V 103, the pull rod 62 moves outward with the conical sleeve 63. At this time, the gas of the airbag column 101 is sucked into the hollow rod 61 through the connecting tube 102, and the inner side of the airbag column 101 becomes flat. Then, the wire is passed through the airbag column 101 and entered into the protective shell 1 for installation. After the wires are installed, loosen the conical sleeve 63, and between the spring II 64 and the spring V Under the action of resetting 103, the conical sleeve 63 moves inward to cover the outer end of the butt joint 2, so that the outer end of the butt joint 2 closes to the middle and presses on the outer side of the airbag column 101. At the same time, the pull rod 62 resets and moves inward, pushing the gas in the hollow rod 61 into the airbag column 101 through the connecting tube 102. The airbag column 101 arches, so that the airbag column 101 is pressed tightly against the outer surface of the wire to prevent moisture from entering the protective shell 1; then the concave plug rod 42 is pulled outward, the spring I 43 is compressed, and then the upper cover 3 is placed on the top of the protective shell 1, and then the cover is loosened. The concave plug rod 42 is opened, and under the action of the spring I 43 returning to the original position, the concave plug rod 42 is driven to return to the original position and inserted into the through hole on the plug block 41 to fix the upper cover 3; when the upper cover 3 is covered on the protective shell 1, the wedge block 82 generates an inward pushing force on the square frame 81, and the square frame 81 transmits the force to the connecting plate 72, so that the connecting plate 72 is pressed inwardly, and the plug plate 76 is pressed inwardly on the docking joint 2, so that the docking joint 2 can be further fixed, making the installation of the docking joint 2 more stable; when the connecting plate 72 is pressed inwardly, the pushing block 82 is driven to push the connecting plate 72 to the inner side of the connecting plate 72, and the connecting plate 72 is pressed inwardly, and ... 93 is pressed to the right side, thereby driving the reinforcement plate 92 to be pressed downward, and the reinforcement plate 92 is stuck in the slot 74 above to reinforce the docking joint 2 again; when the upper cover 3 is covered on the top of the protective shell 1, the upper cover 3 pushes the piston rod 112 to move downward, the spring VI 113 is compressed, and the piston rod 112 moves downward to press the gas in the cylinder 111 into the air ring 5 through the connecting pipe 114, so that the air ring 5 expands. After the air ring 5 expands, it is close to between the protective shell 1 and the docking joint 2, thereby improving the sealing between the protective shell 1 and the docking joint 2 and preventing the entry of moisture.

[0039] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A sealing device for a plastic joint of an electric wire, comprising a protective shell (1), a butt joint (2), an upper cover (3), a clamping member (4), an air ring (5) and a pressing member (6), wherein the protective shell (1) is provided with circular through holes on both sides, the top of the protective shell (1) is detachably connected to the upper cover (3) via the clamping member (4), the through holes on both sides of the protective shell (1) are provided with air rings (5), the butt joint (2) passes through the inner side of the air ring (5) and extends into the protective shell (1), and the outer end of the butt joint (2) is provided with a pressing member (6); wherein: The clamping member (6) comprises a hollow rod (61), a pull rod (62), a conical sleeve (63) and a spring II (64). The outer side of the joint (2) is symmetrically provided with hollow rods (61) parallel to its axis in the front and rear directions. The hollow rod (61) is connected with the pull rod (62). The conical sleeve (63) is slidably connected between the pull rods (62) on the front and rear sides. The spring II (64) is connected between the conical sleeve (63) and the pull rod (62).

2. The sealing device for a plastic part of a joint of an electric wire according to claim 1, characterized in that: The clamping member (4) comprises an insert block (41), a concave insert rod (42), a spring I (43) and a concave sleeve (44). The insert blocks (41) are symmetrically arranged on both the front and rear sides of the bottom of the upper cover (3). The insert blocks (41) are provided with circular through holes. The inner side walls of the protective shell (1) below the insert blocks (41) are provided with concave sleeves (44). The protective shell (1) on both the front and rear sides of the insert blocks (41) are slidably connected with concave insert rods (42). The ends of the concave insert rods (42) pass through the through holes on the insert blocks (41). A spring I (43) is connected between the concave insert rods (42) and the protective shell (1).

3. The sealing device for a plastic part of a joint of an electric wire according to claim 2, characterized in that: The protective housing (1) further comprises a fixing member (7), wherein the fixing member (7) is arranged on both the left and right sides of the protective housing (1), and the fixing member (7) comprises a guide rod I (71), a connecting plate (72), a spring III (73), a guide rod II (75), a plug plate (76) and a spring IV (77). The left and right sides of the protective housing (1) are both slidably connected to the connecting plate (72) via the guide rod I (71), the connecting plate (72) is concave, the connecting plates (72) are symmetrically arranged, the spring III (73) is connected between the connecting plate (72) and the protective housing (1), the butt joint (2) is provided with slots (74) evenly spaced in the circumferential direction of the part inside the protective housing (1), the inner front and rear inner walls of the connecting plate (72) are both slidably connected to the plug plate (76) via the guide rod II (75), and the plug plate (76) and the connecting plate (72) are connected between the spring IV (77).

4. A sealing device for a plastic part of a joint of an electric wire according to claim 3, characterized in that: The invention also comprises a tensioning member (8), wherein the tensioning member (8) is arranged between the upper cover (3) and the connecting plate (72), and the tensioning member (8) comprises a square frame (81) and a wedge-shaped block (82). The square frame (81) is symmetrically arranged on the upper inner side of the connecting plate (72), and the wedge-shaped block (82) is fixedly connected to the upper cover (3) above the square frame (81).

5. A sealing device for a plastic part of a joint of an electric wire according to claim 4, characterized in that: The invention also comprises a reinforcing member (9), wherein the reinforcing member (9) is connected between the connecting plate (72) and the protective housing (1), and the reinforcing member (9) comprises a mounting block (91), a reinforcing plate (92) and a pushing block (93), wherein the mounting blocks (91) are fixedly connected to the upper middle part of the inner sides of the left and right walls of the protective housing (1), the mounting blocks (91) extend inwardly through the connecting plate (72), the reinforcing plate (92) is vertically slidably connected to the mounting block (91), the bottom of the reinforcing plate (92) is inserted into the slot (74) on the docking joint (2), and the pushing block (93) is fixedly connected to the connecting plate (72) above the reinforcing plate (92).

6. A sealing device for a plastic part of a joint of an electric wire according to claim 5, characterized in that: The inner side of the pushing block (93) is a downwardly inclined inclined surface, and the inner side surface of the pushing block (93) is in contact with the upper side surface of the reinforcing plate (92). When the pushing block (93) moves inward, it can push the reinforcing plate (92) to move downward.

7. A sealing device for a plastic part of a joint of an electric wire according to claim 6, characterized in that: The joint (2) further comprises an interface seal (10), the interface seal (10) being arranged on the joint (2), the interface seal (10) comprising a connecting tube (102), an airbag column (101) and a spring V (103), the pull rod (62) being slidably connected to the hollow rod (61), the airbag column (101) being arranged on the inner side of the joint (2), the airbag column (101) being connected to the hollow rod (61) via the connecting tube (102), and the spring V (103) being connected between the pull rod (62) and the hollow rod (61).

8. The sealing device for a plastic part of a joint of an electric wire according to claim 7, characterized in that: The invention also comprises a sealing reinforcement member (11). The sealing reinforcement members (11) are arranged at the four corners of the protective housing (1). The sealing reinforcement member (11) comprises a cylinder body (111), a piston rod (112), a spring VI (113) and a connecting pipe (114). The cylinder body (111) is vertically installed at the four corners of the protective housing (1). The piston rod (112) is slidably arranged in the cylinder body (111). The piston rod (112) passes through the upper wall of the cylinder body (111). The spring VI (113) is connected between the piston rod (112) and the cylinder body (111). The connecting pipe (114) is connected between the bottom of the cylinder body (111) and the adjacent air ring (5).

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