Waterproof connector for electrical equipment

Abstract

The present invention relates to the field of electrical connection technology, and in particular to a waterproof connector for electrical equipment, which is used for connecting two cables and comprises a plug-in end, a plug-in plate and a clamping portion. The plug-in end and the plug-in plate are arranged along a first direction and slide relative to each other along the first direction. A plug-in end is provided with a socket penetrating the plug-in end. One end of the cable core extends along the first direction and extends in the opposite direction after passing through the socket. The plug-in plate is connected to the cable core of another cable. A groove is provided on the side of the plug-in end close to the plug-in end. The plug-in plate clamps the cable cores on both sides of the socket through the groove when it approaches the plug-in end. The clamping portion is used to clamp and limit the cable cores on both sides of the plug-in end when the plug-in plate approaches the plug-in end. The corresponding cable core is bent on the plug-in end, which can increase the friction between the cable core and the plug-in end, thereby hindering the movement of the cable. The clamping portion clamps and positions the cable core on the plug-in end, further increasing the movement resistance of the cable core on the plug-in end and reducing the probability of poor contact.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical connection, in particular to a waterproof connector for electrical equipment. Background Art

[0002] In electrical equipment, waterproof connectors, as key components for ensuring stable electrical connections and safe operation, are widely used in electronic devices, household appliances, general industrial equipment, and other scenarios. Currently, most common waterproof connectors on the market use a plug-in connection structure to meet the demand for quick connection.

[0003] Ordinary plug-in connectors are usually divided into two parts, one of which is set on the equipment as a quick connector, and the other part is connected to the external cable. Due to the lack of an effective cable anti-pull fixing structure inside the connector, it is difficult to provide sufficient binding force to resist external forces. When the external cable is pulled by external force, it is easy to slide inside the connector. Once the cable slides, the contact area between the internal conductor and the connector terminal is reduced or even separated, which will inevitably lead to poor contact and seriously affect the normal operation of the electrical equipment. Summary of the Invention

[0004] Based on this, it is necessary to provide a waterproof connector for electrical equipment to address the problem of poor contact that is easily generated when using a waterproof connector to connect cables.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A waterproof connector for electrical equipment, used for connecting two cables, includes a plug-in end and a fixed end, the plug-in end and the fixed end are arranged along a first direction and slide relative to each other along the first direction, a plug-in end is provided with a jack that passes through the plug-in end along a second direction, one end of a cable core of one cable extends along the first direction and extends in the reverse direction after passing through the jack, and the second direction is perpendicular to the first direction; the fixed end includes a plug-in plate and a clamping portion, the plug-in plate is connected to the cable core of the other cable, the plug-in plate is parallel to the first direction, a groove is provided on the side of the plug-in plate close to the plug-in end, the plug-in plate approaches the plug-in end and clamps the cable cores on both sides of the jack through the groove, and the clamping portion is used to clamp and limit the cable cores on both sides of the plug-in end when the plug-in plate approaches the plug-in end.

[0007] Preferably, a blade is provided on the plugboard, and the blade is located in the groove. The groove has a large end and a small end, and the large end of the groove is located on a side of the plugboard close to the plug-in end.

[0008] Preferably, the waterproof connector of the electrical equipment also includes a first sleeve, a second sleeve and a fixed plate. The first sleeve and the second sleeve are threadedly connected, the axes of the first sleeve and the second sleeve both extend in the first direction, the plug-in end is rotated around the axis of the first sleeve and is arranged in the first sleeve, the plug-in plate is arranged in the second sleeve and is connected to the second sleeve through the fixed plate, and the fixed plate is connected to the second sleeve.

[0009] Preferably, a conical surface is provided on the plug-in end, the axis of the conical surface is coaxial with the first sleeve, and the conical surface gradually moves away from the axis of the first sleeve from the side away from the fixed plate to the side close to the fixed plate, and the plug-in end abuts against the first sleeve in the first direction through the conical surface.

[0010] Preferably, the plug end is cylindrical, and a plurality of sockets are provided, and the plurality of sockets are arranged around the circumferential direction of the plug end, and each socket passes through the side wall of the plug end along the radial direction of the plug end, and a plurality of plug plates are provided, and each plug plate corresponds to a socket.

[0011] Preferably, a card slot is provided on the plug board, the card slot is located on the inner side of the plug-in end, and the card slot is connected to the groove. The card slot includes a first surface and a second surface arranged along a first direction, the second surface is closer to the fixed plate than the first surface, and the first surface gradually moves away from the fixed plate from the side close to the groove to the side away from the groove.

[0012] Preferably, the clamping portion includes a clamping plate and a limiting block, wherein the clamping plate is provided in a plurality of groups and the limiting block is provided in a plurality, the limiting block being provided on the plug-in end, the clamping plate being slidably connected to the plug-in end along a first direction, the plurality of groups of clamping plates and the plurality of limiting blocks being alternately arranged in a circumferential direction of the plug-in end, and each insertion hole being located between two adjacent limiting blocks. The number of clamping plates in each group is two, and all the clamping plates in the plurality of groups of clamping plates are arranged in a circumferential direction of the plug-in end, with the two clamping plates in each group being located on either side of a plug-in plate; the two surfaces of two adjacent limiting blocks that are close to each other are inclined surfaces, and the two inclined surfaces gradually approach each other from the side close to the fixed plate to the side away from the fixed plate, each clamping plate is slidably connected to the inclined surface of an adjacent limiting block, and the two clamping plates in each group are brought closer to or further away from each other via the inclined surfaces.

[0013] Preferably, the clamping parts are provided with two groups, one group is provided on the outer peripheral surface of the plug-in end, and the other group is provided on the inner peripheral surface of the plug-in end.

[0014] Preferably, the fixed end also includes a guide column, a connecting plate and an elastic member, one end of the guide column is arranged on the fixed plate, the connecting plate is slidably arranged on the guide column along the first direction, the clamping plate is connected to the connecting plate, and the elastic member is arranged between the connecting plate and the fixed plate, which is used to make the clamping plate contact with the cable core before the plug-in plate contacts the cable core on the plug-in end.

[0015] Preferably, the insert plate is provided with reinforcing ribs, and the reinforcing ribs extend along the first direction.

[0016] The beneficial effects of the present invention are as follows: a plug hole is provided, and the corresponding cable core is bent and provided on the plug-in end. When the cable outside the plug-in end is subjected to external tension, the friction between the cable core bent on the plug-in end and the plug-in end will increase, thereby hindering the movement of the cable; a clamping portion is provided to clamp and position the cable core on the plug-in end, further increasing the movement resistance of the cable core on the plug-in end; at the same time, the clamping portion limits the cable core, so that the plug-in plate can contact the cable core more accurately, reducing the probability of poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a waterproof connector for electrical equipment provided by an embodiment of the present invention;

[0018] Figure 2 A right side view of a waterproof connector for electrical equipment provided by an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Cross-sectional view along the AA axis;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 A split diagram of a waterproof connector for electrical equipment provided by an embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of a plug-in end of a waterproof connector for electrical equipment provided by an embodiment of the present invention;

[0023] Figure 7 A schematic structural diagram of a clamping plate of a waterproof connector for electrical equipment provided by an embodiment of the present invention;

[0024] Figure 8 A schematic structural diagram of a plug-in board of a waterproof connector of an electrical device provided by an embodiment of the present invention.

[0025] in:

[0026] 100. Connecting end; 101. Socket; 102. Conical surface; 103. Insert plate; 104. Groove; 105. Reinforcement rib; 106. First surface; 107. Second surface; 108. Clamp; 109. Limit block; 110. Connecting plate; 121. First sleeve; 122. Second sleeve; 123. Fixing plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. 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] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] like Figures 1 to 8 As shown, an embodiment of the present invention provides a waterproof connector for electrical equipment, which is used to connect two cables, including a plug-in end 100 and a fixed end. The plug-in end 100 and the fixed end are arranged along a first direction and slide relative to each other along the first direction. A plug-in end 101 is provided on the plug-in end 100, which passes through the plug-in end 100 along a second direction. One end of the cable core of one cable extends along the first direction and passes through the plug-in end 101 and then extends in the opposite direction. The second direction is perpendicular to the first direction; the fixed end includes a plug-in plate 103 and a clamping portion. The plug-in plate 103 is connected to the cable core of the other cable. The plug-in plate 103 is parallel to the first direction. A groove 104 is provided on the side of the plug-in plate 103 close to the plug-in end 100. The plug-in plate 103 approaches the plug-in end 100 and clamps the cable cores on both sides of the plug-in end 101 through the groove 104. The clamping portion is used to clamp and limit the cable cores on both sides of the plug-in end 100 when the plug-in plate 103 approaches the plug-in end 100.

[0031] A plug hole 101 is provided, and the corresponding cable core is bent on the plug end 100. When the cable outside the plug end 100 is subjected to external tension, the friction between the cable core bent on the plug end 100 and the plug end 100 will increase, thereby hindering the movement of the cable; a clamping portion is provided to clamp and position the cable core on the plug end 100, further increasing the movement resistance of the cable core on the plug end 100; at the same time, the clamping portion limits the cable core, so that the plug plate 103 can contact the cable core more accurately, reducing the probability of poor contact.

[0032] In this embodiment, a blade is provided on the plug board 103, and the blade is located in the groove 104. The groove 104 has a large end and a small end. The large end of the groove 104 is located on the side of the plug board 103 close to the plug-in end 100. The blade can easily pierce the wire sheath on the cable core, so that the plug board 103 and the cable core can better contact each other. The groove 104 is inclined relative to the cable core on the plug-in end 100. When the plug board 103 moves relative to the cable core, the blade can more easily cut the wire sheath of the cable core, and at the same time, the plug board 103 can make closer contact with the cable core.

[0033] In this embodiment, the waterproof connector of the electrical equipment also includes a first sleeve 121, a second sleeve 122 and a fixing plate 123. The first sleeve 121 and the second sleeve 122 are threadedly connected. The axes of the first sleeve 121 and the second sleeve 122 both extend in the first direction. The plug-in end 100 is rotated around the axis of the first sleeve 121 and is arranged in the first sleeve 121. The first sleeve 121 is sleeved on the cable connected to the plug-in end 100. The plug-in plate 103 is arranged in the second sleeve 122 and is connected to the second sleeve 122 through the fixing plate 123. The fixing plate 123 is connected to the second sleeve 122. The second sleeve 122 is sleeved on the cable connected to the fixed end. The first sleeve 121 and the second sleeve 122 are respectively fitted with the corresponding cables, so that the interior of the first sleeve 121 and the second sleeve 122 have a certain degree of airtightness.

[0034] In this embodiment, a conical surface 102 is provided on the plug-in end 100, and the axis of the conical surface 102 is coaxial with the first sleeve 121, and the conical surface 102 gradually moves away from the axis of the first sleeve 121 from the side away from the fixing plate 123 to the side close to the fixing plate 123. The plug-in end 100 abuts against the first sleeve 121 in the first direction through the conical surface 102, and the plug-in end 100 can be taken out from the first sleeve 121 to facilitate the installation of the cable core; after the first sleeve 121 and the second sleeve 122 are threadedly connected, as the first sleeve 121 and the second sleeve 122 approach each other, the first sleeve 121 can push the plug-in end 100 close to the plug-in plate 103, so that the plug-in plate 103 is plugged into the plug-in end 100.

[0035] In this embodiment, the plug end 100 is cylindrical. The cable connected to the plug end 100 enters the plug end 100 from the inner side of the plug end 100. A plurality of sockets 101 are provided, and the plurality of sockets 101 are arranged circumferentially around the plug end 100. Each socket 101 penetrates the side wall of the plug end 100 in the radial direction of the plug end 100. The cable connected to the plug end 100 is positioned on both the inner and outer sides of the plug end 100 under the action of the sockets 101. When the plug plate 103 is inserted into the plug end 100 in a first direction, the plug plate 103 can clamp the cable core on both the inner and outer sides of the plug end 100, thereby increasing the contact area between the cable core and the plug plate 103. A plurality of plug plates 103 are provided, and the plurality of plug plates 103 are arranged circumferentially around the plug end 100, and each plug plate 103 corresponds to a socket 101. The cylindrical design of the plug end 100 can reduce its own volume while connecting cables with different numbers of cable cores, thereby expanding its scope of use.

[0036] In this embodiment, a card slot is provided on the plug board 103, which is located on the inner side of the plug end 100 and is connected to the groove 104. The card slot includes a first surface 106 and a second surface 107 arranged along a first direction. The second surface 107 is closer to the fixing plate 123 than the first surface 106, and the first surface 106 gradually moves away from the fixing plate 123 from the side close to the groove 104 to the side away from the groove 104. When the cable in the first sleeve 121 is subjected to tension, the cable core inside the plug end 100 tends to move away from the fixing plate 123. At this time, the card slot is equivalent to a barb hooking the wire sheath on the cable core. The first surface 106 is provided with a chamfer, which can reduce the damage of the first surface 106 to the wire sheath. At the same time, an angle is provided between the connection between the card slot and the groove 104 and the surface of the cable core in contact. If the cable core moves relative to the plug board 103, the plug board 103 can abut against the cable core, or even be embedded in the cable core through the card slot to prevent further movement of the cable core.

[0037] In this embodiment, the clamping portion includes a splint 108 and a limit block 109. There are multiple groups of splints 108, and multiple limit blocks 109. The limit blocks 109 are arranged on the plug-in end 100. The splint 108 is slidably connected to the plug-in end 100 along a first direction. Multiple groups of splints 108 and multiple limit blocks 109 are alternately arranged in sequence around the circumferential direction of the plug-in end 100, and each socket 101 is located between two adjacent limit blocks 109. The number of each group of splints 108 is two, and all splints 108 in the multiple groups of splints 108 are arranged in the circumferential direction of the plug-in end 100, and the two splints 108 in each group are located on both sides of an inserting plate 103; the two surfaces of the two adjacent limit blocks 109 that are close to each other are inclined surfaces, and the two inclined surfaces gradually approach each other from the side close to the fixed plate 123 to the side away from the fixed plate 123. Each splint 108 is slidably connected to the inclined surface of an adjacent limit block 109, and the two splints 108 in each group are close to or away from each other through the inclined surfaces. The splints 108 have a certain toughness and deflection axis. After the two splints 108 in each group contact the limit block 109, they are guided by the inclined surface of the limit block 109 and deflected around their own axis and approach the cable core between them to clamp the cable core; after the splint 108 is separated from the limit block 109, the splint 108 can be reset by its own toughness.

[0038] In this embodiment, two groups of clamping parts are provided, one group is provided on the outer circumference of the plug-in end 100, and the other group is provided on the inner circumference of the plug-in end 100. The two groups of clamping parts simultaneously clamp the cable cores on both sides of the socket 101, further improving the stability of the cable core on the fixed end.

[0039] In this embodiment, the fixed end also includes a guide column, a connecting plate 110 and an elastic member. One end of the guide column is arranged on the fixed plate 123. The connecting plate 110 is slidably arranged on the guide column along the first direction. The clamping plate 108 is connected to the connecting plate 110. The elastic member is arranged between the connecting plate 110 and the fixed plate 123, and is used to make the clamping plate 108 contact the cable core before the plug-in plate 103 contacts the cable core on the plug-in end 100. The elastic member can be a spring. The spring is sleeved on the guide column, and the two ends of the spring are respectively connected to the connecting plate 110 and the fixed plate 123. Before the plug-in end 100 contacts the plug-in plate 103, the clamping plate 108 first contacts the cable core on the plug-in end 100 and fixes the cable core, so that the plug-in plate 103 can better contact the cable core.

[0040] In this embodiment, the plug board 103 is provided with a reinforcing rib 105, which extends along a first direction. The reinforcing rib 105 is used to increase the strength of the plug board 103 in the first direction, so that the plug board 103 is not easily deformed when the contact pressure between the plug board 103 and the cable core increases.

[0041] The working principle of the waterproof connector for electrical equipment provided in the above embodiment is as follows:

[0042] First, the first sleeve 121 and the plug-in end 100 pass through the cable, and the plug-in end 100 can be installed in the first sleeve 121, and then the wire sheath at the end of the cable close to the socket 101 is peeled off to expose the cable core inside the cable. If there are multiple cable cores, each cable core is passed through a socket 101 respectively, and the passed cable core is bent in the opposite axial direction of the fixed end between the two limit blocks 109 adjacent to the socket 101, and the cable core on the inner side of the plug-in end 100 is adjusted so that it is also located between the two limit blocks 109 adjacent to the socket 101; then the plug-in end 100 approaches the splint 108, so that each set of splints 108 is slidably connected to the two limit blocks 109 adjacent to a socket 101, and then maintain the current state to push the first sleeve 121 to contact the second sleeve 122, and rotate the first sleeve 121 so that the first sleeve 121 approaches the second sleeve 122 along the first direction.

[0043] The first sleeve 121 approaching the second sleeve 122 will push the plug-in end 100 to move accordingly through the conical surface 102 of the plug-in end 100, and the plug-in end 100 approaches the plug-in plate 103. During the movement, the two clamps 108 in each group approach each other under the guidance of the inclined surface of the limit block 109 slidably connected thereto and clamp the cable core between the two clamps 108. When the clamping force of the two clamps 108 on the cable core is greater than the elastic force of the spring, the spring will be compressed, and the limit block 109 pushes the corresponding clamp 108 along the first direction toward the fixed plate 123. The clamp 108 drives the connecting plate 110 to slide on the guide column, and the connecting plate 110 continues to compress the spring, and the cable core in the socket 101 continues to approach until it enters the groove 104 of the sliding plug-in plate 103. When the blade on the plug plate 103 contacts the cable core, it will damage the cable core's sheath. As the cable core moves, the cutting depth of the blade on the plug plate 103 will increase until the sheath is cut through and the blade contacts the cable core. During this process, the spring is compressed to the extreme, the splint 108 no longer moves in the first direction, and the limit block 109 slides relative to the splint 108. The two splints 108 in the same group continuously squeeze the cable core along the guide line of the inclined surface of the limit block 109, causing the cable core to extend in the first direction and deform. The cable core's sheath arches, making it easier to contact the blade. At the same time, the blade at the slot position leaves an arc-shaped track on the sheath after contacting the sheath, and then contacts the cable core. If the cable at the plug end 100 is subjected to pulling force, the cable core on the inner side of the plug end 100 will be pulled away from the socket 101. At this time, the clamping force of the clamping plate 108 and the barb formed by the slot will also hinder the movement of the cable core (if the cable core contains multiple strands of wire cores, the clamping plate will cause the cable core to deform when clamping the cable core, and the wires in the cable core will move toward the direction of the blade. The blade at the slot position can be clamped between the multiple wire cores, thereby better hindering the movement of the cable core).

[0044] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A waterproof connector for electrical equipment, used for connecting two cables, characterized in that: The plug-in end and the fixed end are arranged in a first direction and slide relative to each other in the first direction. A plug-in end is provided with a jack that passes through the plug-in end in a second direction. One end of a cable core of one cable extends in the first direction and passes through the jack and then extends in the reverse direction. The second direction is perpendicular to the first direction. The fixed end includes a plug-in plate and a clamping portion. The plug-in plate is connected to the cable core of another cable. The plug-in plate is parallel to the first direction. A groove is provided on one side of the plug-in end. The plug-in plate clamps the cables on both sides of the jack through the groove toward the plug-in end. The core, the clamping portion is used to clamp and limit the cable core on both sides of the plug-in end when the plug-in plate is close to the plug-in end, the plug-in plate is provided with a blade, the blade is located in the groove, the groove has a large end and a small end, the large end of the groove is located on the side of the plug-in end close to the plug-in end; the plug-in plate is provided with a card slot, the card slot is located on the inner side of the plug-in end, and the card slot is connected to the groove, the card slot includes a first surface and a second surface arranged along a first direction, the second surface is closer to the fixed plate than the first surface, and the first surface gradually moves away from the fixed plate from the side close to the groove to the side away from the groove; The plug-in sleeve further comprises a first sleeve, a second sleeve and a fixing plate, wherein the first sleeve and the second sleeve are threadedly connected, the axes of the first sleeve and the second sleeve both extend in a first direction, the plug-in end is rotatably disposed in the first sleeve around the axis of the first sleeve, the plug-in plate is disposed in the second sleeve and connected to the second sleeve via the fixing plate, and the fixing plate is connected to the second sleeve; The plug end is cylindrical, and is provided with a plurality of sockets, which are arranged in a circumferential direction of the plug end, and each socket penetrates the side wall of the plug end along the radial direction of the plug end. There are a plurality of plug plates, and each plug plate corresponds to a socket; The clamping part includes a splint and a limit block. There are multiple groups of splints and multiple limit blocks. The limit blocks are arranged on the plug-in end. The splint is slidably connected to the plug-in end along a first direction. The multiple groups of splints and multiple limit blocks are alternately arranged in sequence around the circumferential direction of the plug-in end, and each socket is located between two adjacent limit blocks; the number of splints in each group is two, and all splints in the multiple groups of splints are arranged around the circumferential direction of the plug-in end, and the two splints in each group are located on both sides of a plug-in plate; the two surfaces of two adjacent limit blocks that are close to each other are inclined surfaces, and the two inclined surfaces gradually approach each other from the side close to the fixed plate to the side away from the fixed plate. Each splint is slidably connected to the inclined surface of a limit block adjacent to it, and the two splints in each group approach or move away from each other through the inclined surface.

2. The waterproof connector for electrical equipment according to claim 1, characterized in that: The clamping parts are provided with two groups, one group is provided on the outer peripheral surface of the plug-in end, and the other group is provided on the inner peripheral surface of the plug-in end.

3. The waterproof connector for electrical equipment according to claim 2, characterized in that: The fixed end also includes a guide column, a connecting plate and an elastic member. One end of the guide column is arranged on the fixed plate. The connecting plate is slidably arranged on the guide column along a first direction. The clamping plate is connected to the connecting plate. The elastic member is arranged between the connecting plate and the fixed plate and is used to make the clamping plate contact with the cable core before the plug-in plate contacts the cable core on the plug-in end.

4. The waterproof connector for electrical equipment according to claim 1, characterized in that: The inserting plate is provided with reinforcing ribs, and the reinforcing ribs extend along the first direction.

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