A three-core electrical connector for a welding robot

Abstract

The application provides a three-core electric connector for a welding robot, which comprises a first connecting piece and a second connecting piece capable of being plugged with each other, wherein the first connecting piece and the second connecting piece each comprise a shell assembly and a contact body assembly which is detachably arranged in the interior of the shell assembly, and the contact body assembly is provided with at least one positioning piece for clamping with the shell assembly; a first circular-truncated-cone-shaped sealing sleeve with an inclined angle is arranged at the connecting position of the first connecting piece and the second connecting piece; the shell assembly comprises a tail protective cover which is detachably arranged at the end of the first connecting piece and the second connecting piece away from the connecting position, and the tail protective cover is provided with a second circular-truncated-cone-shaped sealing sleeve corresponding to the contact body assembly. The three-core electric connector for the welding robot has simple overall structure, convenient and high-precision butt joint, solves the problems of poor contact and replacement of the contact body assembly, and improves the overall sealing performance, so that the welding robot can work stably.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, in particular to a three-core electric connector for welding robots. BACKGROUND

[0002] The welding robot is an industrial robot engaged in welding, and a plurality of electrical modules are installed inside the welding robot. The plurality of electrical modules need to be connected and powered using an electric connector. The electric connector generally includes a male seat and a female seat. The male seat is inserted into the female seat to achieve electrical connection between the male seat and the female seat, thereby forming a complete circuit with the plurality of electrical modules. For example, to guide a current of 100A or more from the base of the robot along the robot arm to the welding workpiece installed at the end of the robot arm. Due to the large working current, the contact body of the connector overheats and the temperature is high. In order to ensure safe production, the contact body needs to be regularly disassembled and replaced for maintenance.

[0003] However, the existing electric connector has a structure limitation, and the contact body and the insulator are positioned and connected by interference fit. Therefore, during the movement of the robot, the wire may be dragged, which may cause poor contact between the wire and the contact body, and the contact body may fall off the insulator. In addition, since the contact body and the insulator are only interference fitted, during the process of taking and delivering the contact body, the original structure of the clamp plate needs to be removed, and the contact body is then dragged by the wire. Repeated taking and delivering may cause the insulator to deform, which may not completely fix the contact body, causing the connector to be scrapped, affecting the production progress, and the incomplete sealing of the contact body may even cause safety problems during production. In addition, since the welding robot needs to ensure stable current delivery during work, the electric connector also needs to ensure waterproof and sealing performance.

[0004] Therefore, it is necessary to design a three-core electric connector for welding robots to solve the above problems. SUMMARY

[0005] Therefore, in order to overcome the defects of the prior art, the present application provides a three-core electric connector for welding robots, which effectively solves the problems of contact body falling off the insulator, repeated taking and delivering causing the insulator to deform, and poor waterproof and sealing performance of the existing electric connector.

[0006] The application provides a three-core electric connector for a welding robot, which comprises a first connecting piece and a second connecting piece capable of being plugged with each other, wherein the first connecting piece and the second connecting piece each comprise a shell assembly and a contact body assembly which is detachably arranged in the interior of the shell assembly, and the contact body assembly is provided with at least one positioning piece for clamping with the shell assembly; a first circular truncated cone sealing sleeve with an inclined angle is arranged at the connection of the first connecting piece and the second connecting piece; the shell assembly comprises a tail protective cover which is detachably arranged at the end of the first connecting piece and the second connecting piece away from the connection, and the tail protective cover is provided with a second circular truncated cone sealing sleeve corresponding to the contact body assembly.

[0007] Preferably, the interior of the first connecting piece and the second connecting piece is provided with three contact body assemblies in parallel and side by side, and the three contact body assemblies are located in the same plane; the first circular truncated cone sealing sleeve and the second circular truncated cone sealing sleeve are arranged one by one corresponding to the contact body assemblies.

[0008] Preferably, the end of the contact body assembly away from the connection is provided with a wire sealing body, and the wire sealing body is partially arranged in the second circular truncated cone sealing sleeve.

[0009] Preferably, the inner side wall of the wire sealing body is provided with a plurality of annular clamping positions in the butt joint direction for clamping wires connected with the contact body assemblies, and the outer side wall of the wire sealing body is formed in a circular truncated cone structure, and the inclined angle of the side wall of the circular truncated cone structure corresponds to the inclined angle of the side wall of the second circular truncated cone sealing sleeve.

[0010] Preferably, the inclined angle is 10-15 degrees.

[0011] Preferably, the shell assembly of the first connecting piece further comprises a first insulator, the end of the first insulator facing the connection is provided with a third circular truncated cone sealing sleeve, the contact body assembly is arranged in the third circular truncated cone sealing sleeve, and the third circular truncated cone sealing sleeve is arranged in the first circular truncated cone sealing sleeve.

[0012] Preferably, the outer side wall of the first circular truncated cone sealing sleeve and the outer side wall of the third circular truncated cone sealing sleeve are each provided with a plurality of waterproof sealing lines.

[0013] Preferably, the shell assembly is made of hard plastic.

[0014] Preferably, the shell assembly of the first connecting piece further comprises a docking shell, which is provided with a positioning column and a positioning block facing the end of the joint; the shell assembly of the second connecting piece further comprises a second insulator, which is provided with a first positioning hole and a second positioning hole facing the end of the joint; in the case of mutual plugging of the first connecting piece and the second connecting piece, the positioning column corresponds to the first positioning hole, and the positioning block corresponds to the second positioning hole.

[0015] Preferably, the shell assembly further comprises a positioning guide pin, which is perpendicular to the contact body assembly.

[0016] The three-core electric connector for welding robots according to the present application has simple overall structure, convenient docking and high docking precision. By improving the structure of the first connecting piece and the second connecting piece, the contact body assembly located in the interior of the shell assembly is simple to replace, does not cause deformation of the shell assembly, and solves the problem of poor contact between the wire and the contact body assembly and between the contact body assembly and the shell assembly due to replacement of the contact body assembly. At the same time, due to the arrangement of the plurality of circular truncated cone sealing sleeves, the sealing performance of the connector as a whole is improved, so that the welding robot can stably obtain working current, thereby improving work efficiency on the basis of ensuring safe production.

[0017] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 Fig. 1 shows a structural schematic diagram of a three-core electric connector for welding robots according to an embodiment of the present application;

[0020] Figure 2 Fig. 2 shows a sectional view of a three-core electric connector for welding robots according to an embodiment of the present application;

[0021] Figure 3 Fig. 3 shows an enlarged schematic diagram of the structure at A of Fig. 2 according to an embodiment of the present application; Figure 2

[0022] Figure 4 Fig. 4 shows a structural schematic diagram of an internal assembly of a three-core electric connector for welding robots according to an embodiment of the present application;​

[0023] Figure 5 A structural schematic diagram of a second connecting piece according to an embodiment of the present application is shown;

[0024] Figure 6 An exploded view of a second connecting piece according to an embodiment of the present application is shown;

[0025] Figure 7 Another structural schematic diagram of a second connecting piece according to an embodiment of the present application is shown;

[0026] Figure 8 A structural schematic diagram of a first connecting piece according to an embodiment of the present application is shown;

[0027] Figure 9 A structural schematic diagram of a first contact body assembly according to an embodiment of the present application is shown;

[0028] Figure 10 A structural schematic diagram of a second contact body assembly according to an embodiment of the present application is shown;

[0029] Figure 11 A sectional view of a first frustoconical sealing sleeve according to an embodiment of the present application is shown.

[0030] Reference numerals: 1 - first connecting piece; 101 - first insulator; 102 - third frustoconical sealing sleeve; 103 - mating housing; 104 - positioning post; 105 - positioning block; 2 - second connecting piece; 201 - second insulator; 202 - first positioning hole; 203 - second positioning hole; 3 - tail protection cover; 301 - second frustoconical sealing sleeve; 302 - fixing piece; 401 - first positioning piece; 402 - second positioning piece; 403 - pin piece; 404 - crown spring; 405 - third positioning piece; 406 - jack piece; 5 - first frustoconical sealing sleeve; 501 - fourth positioning piece; 502 - first angle line; 503 - middle line; 6 - sealing line body; 601 - annular clamping position; 7 - inclination angle; 8 - waterproof sealing line; 9 - positioning guide pin. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application and are not all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "communication", and "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be the communication between two elements inside. 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.

[0035] According to a first aspect of the present application, a three-core electrical connector for a welding robot is provided, as shown in Figures 1 to 3 The three-core electrical connector for a welding robot can be used in an industrial production line, for example, for current transmission of a welding robot. The three-core electrical connector for a welding robot includes a first connecting piece 1 and a second connecting piece 2.

[0036] In the following description, reference will be made toFigures 1 to 10 The detailed structure of the first connecting piece 1 and the second connecting piece 2 of the three-core electric connector for the welding robot is described in detail.

[0037] As shown in the embodiment, the first connecting piece 1 can be a plug in the connector, the second connecting piece 2 can be a socket in the connector, and the first connecting piece 1 and the second connecting piece 2 can be connected to the wire or the current transmission line, respectively, so that the current transmission is realized by the first connecting piece 1 and the second connecting piece 2. Figures 1 to 4

[0038] Specifically, the first connecting piece 1 and the second connecting piece 2 can each include a shell assembly and a contact body assembly, wherein the contact body assembly is detachably arranged inside the shell assembly. Since the welding robot needs to transmit a large current during work, the contact body assembly inside the connector will be heated and the temperature will rise. In order to ensure safe production, the contact body assembly needs to be regularly disassembled for replacement and maintenance, so the contact body assembly and the shell assembly need to be detachably mounted. The contact body assembly can have at least one positioning piece for clamping with the shell assembly, and the detachable mounting is realized by clamping.

[0039] The connection between the first connecting piece 1 and the second connecting piece 2 is provided with a first circular truncated cone-shaped sealing sleeve 5 with an inclined angle. The inclined angle here refers to the angle between the inner side wall of the first circular truncated cone-shaped sealing sleeve 5 and the center line of the first circular truncated cone-shaped sealing sleeve 5, that is, the angle between the extension line of the first angle line 502 and the extension line of the center line 503 in the cross-sectional view as shown in Figure 2 and Figure 11 The first circular truncated cone-shaped sealing sleeve 5 can be formed as a whole in a truncated cone shape structure, and the inside of the truncated cone shape structure is hollow, which is convenient for the contact body assembly to pass through. According to the structure design of the connection between the first connecting piece 1 and the second connecting piece 2, the inclined angle of the first circular truncated cone-shaped sealing sleeve 5 can provide better sealing effect when the socket and the plug of the connector are docked, thereby ensuring the waterproofness and the sealing property.

[0040] Preferably, the inclined angle of the first circular truncated cone-shaped sealing sleeve 5 can be 10-15 degrees, and the inclined angle of 10-15 degrees can accommodate various wire diameters of the welding robot.

[0041] Preferably, the first circular truncated cone-shaped sealing sleeve 5 can be provided with a fourth positioning piece 501, which can cooperate with the positioning groove opened in the inner side wall of the shell assembly, thereby ensuring that the first circular truncated cone-shaped sealing sleeve 5 is assembled in place.

[0042] ​The shell assembly comprises a tail protective cover 3 which is detachably arranged at the end of the first connecting piece 1 and the second connecting piece 2 away from the connecting position, and is used for protecting the end of the first connecting piece 1 and the second connecting piece 2 connected with the wire. When the contact body assembly needs to be replaced, the tail protective cover 3 can be detached to quickly replace the contact body assembly in the interior of the first connecting piece 1 and the interior of the second connecting piece 2. In addition, in order to ensure the sealing performance, the tail protective cover 3 is provided with a second circular truncated cone sealing sleeve 301 corresponding to the contact body assembly. The second circular truncated cone sealing sleeve 301 can be integrally formed as a circular truncated cone structure, and the interior of the circular truncated cone structure is hollow, facilitating the arrangement of the contact body assembly.

[0043] The welding robot three-core electric connector changes the internal structure of the shell assembly, so that the contact body assembly can not be pulled off from the insulator due to the traction generated by the movement of the robot arm, and the wire and the contact body assembly are not in poor contact. At the same time, the connecting structure of the tail is improved, so that when the contact body assembly needs to be replaced, the contact body assembly can be quickly taken out and replaced by detaching the tail protective cover 3, without the need to use external force to pull the contact body assembly, thereby avoiding the deformation of the insulator. At the same time, the welding robot three-core electric connector also improves the sealing structure through targeted structure design, and improves the sealing performance of the key connecting position.

[0044] In addition, referring to Figures 5 to 10 , in the embodiment, the welding robot three-core electric connector also improves and adjusts part of the structure.

[0045] Preferably, as Figure 4 shown, in the embodiment, three contact body assemblies are arranged in parallel and side by side in the interior of the first connecting piece 1 and the second connecting piece 2, and the three contact body assemblies are located in the same plane. In this way, the welding robot three-core electric connector is a three-core rectangular connector, and the three-core connector can be quickly connected while ensuring a large current transmission. In addition, the three contact body assemblies can be respectively marked as U, V and ground, and are suitable for direct current or alternating current motors. The rectangular connector has a structure similar to a rectangle, and can be quickly connected, thereby saving installation space.

[0046] Preferably, the first circular truncated cone sealing sleeve 5 and the second circular truncated cone sealing sleeve 301 are arranged one by one corresponding to the contact body assembly. In the embodiment, the number of the first circular truncated cone sealing sleeve 5 and the second circular truncated cone sealing sleeve 301 is three, and the three first circular truncated cone sealing sleeves 5 and the three second circular truncated cone sealing sleeves 301 are arranged in parallel and side by side.

[0047] Preferably, as Figure 2 , Figure 3 ,Figure 6 and Figure 7 As shown in the embodiments, the end of the contact assembly away from the connection is provided with a sealing body 6, the sealing body 6 is partially sleeved on the second circular truncated cone sealing sleeve 301, the sealing body 6 can be used for sealing the connection between the wire and the contact assembly, and can be combined with the second circular truncated cone sealing sleeve 301 to realize the tail of the connector (i.e. the end of the first connecting piece 1 or the second connecting piece 2 away from the connection between the two).

[0048] Preferably, as shown in Figure 2 , Figure 3 , Figure 6 and Figure 7 , in the embodiments, the inner side wall of the sealing body 6 is provided with a plurality of annular clamping positions 601 in the direction of butt joint (i.e. the direction in which the first connecting piece 1 or the second connecting piece 2 butt joint to each other), which are used for clamping the wire connected with the contact assembly, the outer side wall of the sealing body 6 is formed as a circular truncated cone structure, the inclination angle of the side wall of the circular truncated cone structure corresponds to the inclination angle of the side wall of the second circular truncated cone sealing sleeve 301, and since the second circular truncated cone sealing sleeve 301 is sleeved outside the sealing body 6, the inner side wall of the second circular truncated cone sealing sleeve 301 is formed as a circular truncated cone structure matched with the sealing body 6, and the inner side wall of the second circular truncated cone sealing sleeve 301 and the outer side wall of the sealing body 6 are pressed against each other to realize sealing.

[0049] Preferably, as shown in Figure 2 and Figure 3 , in the embodiments, the inclination angle is 10-15 degrees, i.e. as shown in Figure 3 , the inclination angle 7 is 10-15 degrees. Since the sealing at the tail protection cover 3 is realized by extrusion of the sealing body 6 and the tail protection cover 3, the inclination angle 7 of 10-15 degrees can realize waterproofing of wires of various diameters.

[0050] Preferably, as shown in Figure 2 , in the embodiments, the shell assembly of the first connecting piece 1 further comprises a first insulator 101, the first insulator 101 is provided with a third circular truncated cone sealing sleeve 102 facing the end of the connection, the contact assembly is sleeved on the third circular truncated cone sealing sleeve 102, and the third circular truncated cone sealing sleeve 102 is sleeved on the first circular truncated cone sealing sleeve 5. The structure, arrangement position and number of the third circular truncated cone sealing sleeve 102 correspond to those of the first circular truncated cone sealing sleeve 5.

[0051] Preferably, as shown in Figure 2 and Figure 4As shown in the embodiment, the outer side wall of the first circular frustum-shaped sealing sleeve 5 and the outer side wall of the third circular frustum-shaped sealing sleeve 102 are both provided with a plurality of waterproof sealing lines 8. The waterproof sealing lines 8 can be protruded outward from the outer side wall of the first circular frustum-shaped sealing sleeve 5 and the outer side wall of the third circular frustum-shaped sealing sleeve 102 to form an annular structure. After the first connecting piece 1 and the second connecting piece 2 are connected, the plurality of waterproof sealing lines 8 of the third circular frustum-shaped sealing sleeve 102 can press the inner side wall of the first circular frustum-shaped sealing sleeve 5, and the plurality of waterproof sealing lines 8 of the first circular frustum-shaped sealing sleeve 5 can press the inner side wall of the insulator, so that waterproof sealing is achieved through pressing.

[0052] Preferably, in the embodiment, the shell assembly is made of hard plastic, which can be, for example, polyvinyl chloride, polyethylene, polystyrene, etc. Since the contact body assembly needs to be replaced regularly, the shell assembly needs to have hardness and also needs to have a certain elasticity to avoid deformation caused by repeated dragging. The problem of repeated deformation caused by the shell assembly made of rubber in the prior art is solved.

[0053] Preferably, as shown in the embodiment, the shell assembly of the first connecting piece 1 further comprises a connecting shell 103. The connecting shell 103 is provided with a positioning column 104 and a positioning block 105 at the end facing the connection. The positioning column 104 can be formed as a cylindrical structure, and the positioning block 105 can be formed as a rectangular structure. The number of positioning columns 104 can be two, and the two positioning columns 104 can be arranged on the side of the positioning block 105 facing each other. Figure 5 and Figure 8 As shown in the embodiment, the shell assembly of the first connecting piece 1 further comprises a connecting shell 103. The connecting shell 103 is provided with a positioning column 104 and a positioning block 105 at the end facing the connection. The positioning column 104 can be formed as a cylindrical structure, and the positioning block 105 can be formed as a rectangular structure. The number of positioning columns 104 can be two, and the two positioning columns 104 can be arranged on the side of the positioning block 105 facing each other.

[0054] Preferably, as shown in the embodiment, the shell assembly further comprises a positioning guide pin 9, which is perpendicular to the contact body assembly. The number of contact body assemblies is three, and one positioning guide pin 9 is arranged between every two contact body assemblies. The arm of the welding robot is provided with a connecting position for mounting and fixing the connector. The positioning guide pin 9 can cooperate with the connecting position to realize quick mounting and positioning, which is convenient for the installation of the connector. Figures 4 to 8

[0055] ​Preferably, in the embodiment, the shell assembly of the first connector 1 comprises the butt shell 103, the first insulator 101 and the tail protection cover 3. The shell assembly of the second connector 2 comprises the second insulator 201 and the tail protection cover 3. Among them, as shown in Figure 6 and Figure 7 The tail protection cover 3 is detachably connected with the first insulator 101 or the second insulator 201 through the fixing piece 302. The fixing piece 302 can comprise a screw, a flat washer and a spring washer, the screw can pass through the flat washer, the spring washer and the tail protection cover 3 and be connected with the screw hole of the first insulator 101 or the second insulator 201. The number of the fixing piece 302 can be multiple, and the multiple fixing pieces 302 are uniformly arranged on the tail protection cover 3. In addition, the inner side wall of the first insulator 101 and the second insulator 201 is formed with multiple clamping positions for clamping with the positioning piece described below. The clamping position can be formed as an annular groove, which can facilitate the positioning and clamping of the positioning piece.

[0056] Preferably, in the embodiment, Figure 10 the contact body assembly of the first connector 1, Figure 9 the contact body assembly of the second connector 2. Among them, the contact body assembly of the first connector 1 comprises the jack piece 406, the first positioning piece 401, the third positioning piece 405 and the crown spring 404. The crown spring 404 is arranged on the inner side wall of the jack piece 406, which facilitates the current transmission after butt joint. The first positioning piece 401 can be formed as a clamping spring piece, which has multiple spring structures that are raised, and the first positioning piece 401 is sleeved on the outer side wall of the jack piece 406. In the process of sending the contact body assembly into the insulator along the butt joint direction, the spring piece can be easily sent in because the direction of the spring piece is opposite to the butt joint direction, and after the contact body assembly is sent into place, it can be clamped in the clamping position formed on the inner side wall of the first insulator 101. The third positioning piece 405 is arranged on the outer circumferential side of the jack piece 406 and is formed as a protrusion extending outward in the circumferential direction, which can play a role in positioning. When the third positioning piece 405 abuts against the clamping position of the inner side wall of the first insulator 101 in the process of sending the contact body assembly, it means that it is sent into place.

[0057] The contact body assembly of the second connector 2 comprises the pin piece 403, the first positioning piece 401 and the second positioning piece 402, the first positioning piece 401 has the same structure, arrangement position and use mode as the first positioning piece 401 in the contact body assembly of the first connector 1, and will not be described again. The function of the second positioning piece 402 is also the same as that of the third positioning piece 405. When the second positioning piece 402 abuts against the clamping position of the inner side wall of the second insulator 201 in the process of sending the contact body assembly, it means that it is sent into place.

[0058] The welding robot uses the three-core electric connector which has simple overall structure, convenient and high-precision butt joint, and the contact body assembly inside the shell assembly is simple to replace, does not cause the shell assembly to be deformed, and solves the problem of poor contact between the wire and the contact body assembly and between the contact body assembly and the shell assembly caused by replacing the contact body assembly; meanwhile, the sealing performance of the connector is improved as a whole due to the arrangement of the plurality of circular truncated cone sealing sleeves, so that the welding robot can stably obtain working current, and the working efficiency is improved on the basis of ensuring safe production.

[0059] Finally, it should be noted that: the above-described embodiments are merely specific embodiments of the present application, used to illustrate the technical solutions of the present application, and are not limiting, the protection scope of the present application is not limited thereto, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: any person skilled in the art within the technical range disclosed by the present application, can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A three-core electrical connector for a welding robot, characterized in that, The three-core electrical connector for the welding robot includes a first connector and a second connector that can be plugged into each other. Both the first connector and the second connector include a housing assembly and a contact assembly that is detachably disposed inside the housing assembly. The contact assembly has at least one positioning element for engaging with the housing assembly. The connection between the first connector and the second connector is provided with a first frustum-shaped sealing sleeve with an inclined angle; the housing assembly includes a tail protective cover, which is detachably disposed at the end of the first connector and the second connector away from the connection, and the tail protective cover is provided with a second frustum-shaped sealing sleeve corresponding to the contact body assembly; The first connector and the second connector have three contact body assemblies arranged in parallel inside the connector, and the three contact body assemblies are located on the same plane; the first frustum-shaped sealing sleeve and the second frustum-shaped sealing sleeve are arranged in a one-to-one correspondence with the contact body assemblies; The end of the contact assembly away from the connection point is provided with a sealing body, and the sealing body portion passes through the second frustum-shaped sealing sleeve.

2. The three-core electrical connector for welding robots according to claim 1, characterized in that, The inner sidewall of the sealing body is provided with a plurality of annular locking positions along the mating direction for locking the wire connected to the contact body assembly. The outer sidewall of the sealing body is formed into a frustum-shaped structure, and the inclination angle of the sidewall of the frustum-shaped structure corresponds to the inclination angle of the sidewall of the second frustum-shaped sealing sleeve.

3. The three-core electrical connector for welding robots according to claim 2, characterized in that, The tilt angle is 10-15 degrees.

4. The three-core electrical connector for welding robots according to claim 1, characterized in that, The housing assembly of the first connector further includes a first insulator, and a third frustum-shaped sealing sleeve is provided at the end of the first insulator facing the connection. The contact body assembly passes through the third frustum-shaped sealing sleeve, and the third frustum-shaped sealing sleeve passes through the first frustum-shaped sealing sleeve.

5. The three-core electrical connector for welding robots according to claim 4, characterized in that, The outer walls of both the first and third frustum-shaped sealing sleeves are provided with multiple waterproof sealing lines.

6. The three-core electrical connector for welding robots according to claim 1, characterized in that, The housing assembly is made of rigid plastic.

7. The three-core electrical connector for welding robots according to claim 1, characterized in that, The housing assembly of the first connector further includes a docking housing, wherein the end of the docking housing facing the connection is provided with a positioning post and a positioning block; The housing assembly of the second connector also includes a second insulator, the end of the second insulator facing the connection point having a first positioning hole and a second positioning hole; When the first connector and the second connector are plugged into each other, the positioning post corresponds to the first positioning hole, and the positioning block corresponds to the second positioning hole.

8. The three-core electrical connector for welding robots according to claim 1, characterized in that, The housing assembly further includes a positioning guide pin, which is perpendicular to the contact body assembly.

Images