Socket with waterproof function

Abstract

The utility model discloses a socket with a waterproof function, which comprises a plastic shell and a metal terminal fixed in an accommodating cavity of the plastic shell, the accommodating cavity is matched with an adaptive plug, a step position is processed on the metal terminal, and the plastic shell fixes the metal terminal through a rubber coating part. The rubber coating part comprises a boss facing the opening direction of the accommodating cavity, the boss is provided with a first step and a second step, the second step is the same as the step position of the metal terminal in size, and the adaptive plug is inserted in the accommodating cavity to coat the second step and is blocked by the first step, so that a drainage gap is reserved between the adaptive plug and the bottom of the accommodating cavity. According to the device, the boss structure is arranged, the first-stage step plays a role in limiting insertion of the adaptive plug and forms the drainage gap, short circuit of the metal terminal directly caused after water enters the accommodating cavity can be avoided, the second-stage step can be inserted into the jack of the adaptive plug, and the second-stage step is made of a plastic material and cannot be short-circuited, so that the service life of the device is prolonged. And an auxiliary waterproof effect is achieved on the metal terminal.

Description

Technical Field

[0001] The utility model relates to the technical field of partial improvement design of sockets, in particular to a socket with a waterproof function. Background Art

[0002] An AC socket refers to a socket that can only input through an alternating voltage, and is commonly used in household electrical appliances, kitchen electrical appliances, home appliances, medical monitors, ventilators, infusion products, etc. At present, the disconnector power sockets on the market do not have a waterproof function and cannot be used outdoors or in places with liquids, which greatly limits the use places or brings potential safety hazards during use. As Figure 4 shown in the schematic diagram of the AC socket before improvement, since each metal pin and the plastic shell form a flat surface at the bottom of the accommodating cavity of the plastic shell after being injection-molded with rubber, and the end of the mating plug directly contacts the bottom surface of the accommodating cavity after being inserted into the AC socket, once water enters the plastic shell, the water flow will directly contact each metal pin and immediately cause a short circuit, affecting the operation and use of the device.

[0003] In the prior art, the patent with the publication number of CN115995716A discloses a waterproof AC socket, including an AC socket and a mating plug. The front end of the AC socket is an elliptical cavity structure, and the rear end is a square cavity structure. Four groups of clamping plates are arranged on the square surface of the AC socket. The clamping plates are integrally connected with the AC socket, and a slot structure is formed between the clamping plates and the AC socket. A waterproof groove is opened on the elliptical structure surface of the AC socket. One end of the mating plug is embedded inside the AC socket and fixedly connected with the AC socket. Two groups of fixing plates are arranged on the rear surface of the AC socket. A wire connector is fixedly connected to the lower surface of the square structure of the AC socket. In this invention, the outer shape of the AC socket adopts an elliptical design scheme and a sealing ring is added, greatly increasing the sealing performance of the product and effectively preventing rainwater from entering the product cavity through the gaps on the outer side of the shell. A rubber ring is added at the root of the PIN needle of the AC socket, and interference is generated between the jack and the rubber ring at the root of the PIN needle, effectively preventing rainwater from splashing in.

[0004] The patent with the publication number CN214957542U discloses a waterproof structure for an AC socket of an infusion pump, which includes a hard plastic adapter frame and a soft plastic adapter frame. The soft plastic adapter frame is sleeved on the outer periphery of the interface of the AC socket, and the hard plastic adapter frame is sleeved on the outer periphery of the soft plastic adapter frame. A connecting plate parallel to the PCB board for assembling the AC socket extends from the bottom of the hard plastic adapter frame, and this connecting plate is locked with the PCB board and the two side wing plates of the AC socket; the upper part of the hard plastic adapter frame is clamped in the upper card slot of the upper shell, and the lower card slot at the lower part of the hard plastic adapter frame is clamped on the lower card edge of the lower shell, and the upper shell and the lower shell are assembled into the shell of the infusion pump. By using the hard plastic adapter frame and the soft plastic adapter frame as the transfer media, the AC socket is more stable during the assembly and application processes. The connecting plate, as a connection strengthening member, is fixed to the PCB board and the wing plates on both sides of the AC socket, effectively avoiding the poor soldering feet of the AC socket caused by the hard plastic adapter frame, the shell, or other acting forces.

[0005] In order to solve one of the above problems, the present application provides a socket with a waterproof function. Utility Model Content

[0006] The purpose of the present utility model is to solve the problems existing in the prior art, and a socket with a waterproof function is proposed. By setting a boss structure, the first - level step plays a role in limiting the insertion of the mating plug and forms a drainage gap, which can prevent the metal terminals from being short - circuited directly after water enters the accommodation cavity. The second - level step can be inserted into the jack of the mating plug, and the second - level step is made of plastic material, which will not cause a short - circuit and plays an auxiliary waterproof role for the metal terminals.

[0007] To achieve the above purpose, the present utility model adopts the following technical solution: A socket with a waterproof function, the socket includes a plastic shell and metal terminals fixed in the accommodation cavity of the plastic shell. The fixing method is by plastic molding or pressing. The accommodation cavity cooperates with a mating plug. The metal terminals are processed with a stepped position. The plastic shell fixes the metal terminals through a rubber - coated part. The rubber - coated part includes a boss facing the opening direction of the accommodation cavity. The boss is provided with a first - level step and a second - level step. The second - level step has the same size as the stepped position of the metal terminals. The mating plug is inserted into the accommodation cavity to cover the second - level step and is blocked by the first - level step, so that there is a drainage gap between the mating plug and the bottom of the accommodation cavity, which can drain the water entering the accommodation cavity in time and prevent the metal terminals in the accommodation cavity from being short - circuited, thus playing a protective role.

[0008] Furthermore, as described above, the boss is a plastic stepped ring. The outer circle of the second - level step is aligned with the outer contour of the stepped position of the metal terminals, and the first - level step matches the end of the jack of the mating plug.

[0009] Furthermore, the height of the first step as mentioned above is 2-3 mm.

[0010] Furthermore, the height of the second step as mentioned above is 1-3 mm.

[0011] Furthermore, the rubber-coated portion as described above further includes a retreat hole which is away from the opening direction of the accommodating cavity. The design of the retreat hole allows the metal terminal to have a certain flexible retreat space during the insertion operation at the boss.

[0012] Furthermore, as described above, the raised portion of the metal terminal is clamped in the retreat hole. The raised portion design can make the rubber-coated fixation of the metal terminal more secure and extend the service life of the socket. The retreat hole is a blind hole and is arranged around the metal terminal.

[0013] Furthermore, there are two or three metal terminals as described above, one of the three metal terminals is a ground terminal, and the other two are a live wire terminal and a neutral wire terminal.

[0014] Furthermore, a socket is provided at one end of the adapter plug as described above, the size and position of the socket correspond to the metal terminal, and a power cord is fixedly connected to the other end of the adapter plug.

[0015] Furthermore, the end of the jack as described above abuts against the first step and forms a drainage gap between the end of the adapter plug and the bottom of the accommodating cavity. The bottom of the accommodating cavity may also be provided with a groove outside the boss.

[0016] Furthermore, the socket as described above is embedded in the product housing, and the socket is fixed to the product housing by means of a snap connection or a threaded connection.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the device forms a height difference between the metal terminal and the bottom of the accommodating cavity by setting a boss structure. After the adapter plug and the socket are assembled, they are blocked by the first step and cannot contact the bottom of the accommodating cavity to form a drainage gap, so that a small amount of water can enter and then be discharged by itself without short circuiting, thus avoiding direct short circuit of the metal terminal caused by water entering the accommodating cavity. At the same time, when the adapter plug is inserted into the socket, the socket covers the second step, which is made of plastic and will not cause a short circuit, thus playing an auxiliary waterproof role for the metal terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 3 It is a schematic diagram of the assembly of the utility model and the adapter plug;

[0021] Figure 4 This is a schematic diagram before the improvement of the present utility model.

[0022] In the figure: 1, socket; 11, plastic housing; 111, receiving cavity; 112, boss; 1121, first - stage step; 1122, second - stage step; 113, overmolding part; 114, relief hole; 12, metal terminal; 2, mating plug; 3, drainage gap. Detailed implementation manners

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered "installed on" another element, it can be directly installed on the other element or there can also be an intermediate element. When an element is considered "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements.

[0025] For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present utility model can be understood according to specific situations.

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] Refer to Figures 1-3As shown in the figure, a socket with a waterproof function according to the present utility model, the socket 1 includes a plastic housing 11 and metal terminals 12 fixed in the receiving cavity 111 of the plastic housing 11. The fixing method is by plastic molding or pressing, which will not be elaborated here. The receiving cavity 111 cooperates with a mating plug 2. A stepped position is machined on the metal terminal 12, and the plastic housing 11 fixes the metal terminal 12 through a rubberized part 113. Specifically, the diameter of the metal terminal 12 is reduced at the stepped position and is covered by the rubberized part 113. The rubberized part 113 includes a boss 112 facing the opening direction of the receiving cavity 111. The boss 112 is provided with a first-stage step 1121 and a second-stage step 1122. The outer diameter of the first-stage step 1121 is larger than that of the second-stage step 1122. The second-stage step 1122 has the same size as the stepped position of the metal terminal 12, that is, the outer diameter of the metal terminal 12 is equal to the outer diameter of the first-stage step 1121. The mating plug 2 is inserted into the receiving cavity 111 to cover the second-stage step 1122 and is blocked by the first-stage step 1121, so that a drainage gap 3 is left between the mating plug 2 and the bottom of the receiving cavity 111.

[0029] After the mating plug 2 is inserted into the socket 1, the first-stage step 1121 plays a limiting role to ensure that the mating plug 2 cannot be inserted to the bottom of the receiving cavity 111 of the plastic housing 11, so as to form a cavity drainage gap 3 at the bottom of the receiving cavity 111, and drain the entered water in time, so as not to cause the metal terminal 12 in the receiving cavity 111 to be short-circuited, thus playing a protective role.

[0030] Embodiment 2

[0031] Refer to Figures 1-3 As shown in the figure, on the basis of the technical solution of Embodiment 1, a socket with a waterproof function. Further, the boss 112 as described above is a plastic stepped ring. The outer circle of the second-stage step 1122 is aligned with the outer contour of the stepped position of the metal terminal 12, and the second-stage step 1122 matches the end of the jack of the mating plug 2. Since the outer dimension of the second-stage step 1122 is the same as the outer shape of the metal terminal 12, when the mating plug 2 is inserted, the second-stage step 1122 is inserted into the mating plug 2 to a certain depth. If more water enters, when the first-stage step 1121 cannot drain the water in time, the water may enter the second-stage step 1122. Since the second-stage step 1122 is also made of plastic, it will not cause a short circuit. The two-stage plastic stepped ring can play a double insurance role.

[0032] Furthermore, the height of the two-step plastic step ring is as high as possible while meeting safety standards. Specifically, the height of the first step 1121 is 2-3 mm, and the height of the second step 1122 is 1-3 mm. The actual size parameters are designed based on the specific size of the product and safety specifications.

[0033] Furthermore, the rubber-coated portion 113 also includes a retreat hole 114 that is away from the opening direction of the accommodating cavity 111. The design of the retreat hole 114 allows the metal terminal 12 to have a certain flexible retreat space when being inserted and installed at the boss 112. In addition, the raised portion of the metal terminal 12 is clamped in the retreat hole 114. The raised portion design can make the rubber-coated fixation of the metal terminal 12 more secure, and the plug-in and unplug service life of the socket 1 is longer. The retreat hole 114 is a blind hole and is arranged around the metal terminal 12.

[0034] Embodiment 3

[0035] Reference Figures 1-3 As shown, based on the technical solution of the second embodiment, a socket with waterproof function, for the socket 1, includes all standard sockets 1, such as national standard, American standard, European standard, etc., the corresponding number of metal terminals 12 is two or three, one of the three metal terminals 12 is a ground terminal, and the other two are live wire terminals and neutral wire terminals. During use, the socket 1 and the adapter plug 2 are used in a direction perpendicular to the ground, and the neutral wire or ground wire of the metal terminal 12 is downward, so that when water flows downward and is discharged, there will be no short circuit due to direct contact with the live wire.

[0036] Furthermore, a jack is provided at one end of the adapter plug 2, and the size, position and number of the jack correspond to the metal terminal 12, and a power cord is fixedly connected to the other end of the adapter plug 2. In addition, the end of the jack abuts against the first step 1121, so that a drainage gap 3 is formed between the end of the adapter plug 2 and the bottom of the accommodating cavity 111, and a groove can be provided outside the boss 112 at the bottom of the accommodating cavity 111, and the design of the groove increases the space of the drainage gap 3, which can play a role in assisting drainage.

[0037] Furthermore, the socket 1 is embedded in the product housing, and the socket 1 is fixed to the product housing by a snap-on connection or a threaded connection.

[0038] like Figure 4 As shown, in the ordinary socket structure design, when the plug is inserted into the socket, the end face of the plug is in direct contact with the end face of the socket. When water enters, the live wire and the neutral wire of the metal terminals in the socket will be connected by water, resulting in a safety risk of short circuit and fire.

[0039] The improvement of the utility model device is: Figure 2As shown in the figure, the metal terminal 12 has a stepped position, and the plastic housing 11 is designed with a boss 112 at this stepped position. The boss 112 is a two-stage plastic stepped ring structure. Among them, the outer contour of the first-stage step 1121 is a conical surface, the top of the first-stage step 1121 is a plane, the outer contour of the second-stage step 1122 matches the external dimensions of the metal terminal 12, and the top of the second-stage step 1122 is equal to the stepped position dimension of the metal terminal 12. When the mating plug 2 is inserted into the socket 1, the hole axis of the jack and the metal terminal 12 are in cooperation. Since the size of the second-stage step 1122 matches the metal terminal 12, the jack is inserted downward and blocked by the first-stage step 1121. At this time, the second-stage step 1122 is completely covered by the jack. Such a two-stage plastic stepped ring structure design can play a dual-insurance role in terms of waterproofing. During the use of the socket 1, in the direction perpendicular to the ground, the neutral wire or the ground wire of the metal terminal 12 should face downward, so that when water flows downward and drains out, it will not come into contact with the live wire and conduct directly. Since the height of the first-stage step 1121 is designed to form a drainage gap 3 in the receiving cavity 111, water can be discharged outward in time. If more water enters and the first-stage step 1121 cannot drain the water in time, the water may enter the second-stage step 1122. Since the second-stage step 1122 is also made of plastic, it will not cause a short circuit. By adding the boss 112 structure made of plastic, a height difference is formed between the metal terminal 12 and the bottom of the receiving cavity 111, so that a small amount of water can drain out by itself after entering and will not conduct a short circuit, having a certain waterproof effect.

[0040] In the device of the present utility model, the socket 1 is an AC socket, and the mating plug 2 can be an AC power cord or an adapter cable. The assembly and cooperation relationships of the various components involved, such as the metal terminal 12, the plastic housing 11, and the overmolding process, are existing technologies or materials. Those skilled in the art can directly purchase or order them from the market according to the required product models and specifications.

[0041] The electrical components mentioned in the text are all electrically connected to the external main controller and 220V mains or industrial electricity, and the main controller can be a conventional known device such as a computer that plays a control role.

[0042] The above is only a preferred specific embodiment of the present utility model. Common knowledge such as the specific structures and characteristics known to the public in the solution is not described in detail here. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A socket with a waterproof function, the socket (1) comprising a plastic housing (11) and metal terminals (12) fixed within a receiving cavity (111) of the plastic housing (11), the receiving cavity (111) being adapted to cooperate with a mating plug (2), characterized in that, A stepped position is machined on the metal terminal (12), and the plastic housing (11) fixes the metal terminal (12) through the encapsulation part (113). The encapsulation part (113) includes a boss (112) facing the opening direction of the accommodation cavity (111). The boss (112) is provided with a first-level step (1121) and a second-level step (1122). The second-level step (1122) has the same size as the stepped position of the metal terminal (12). The mating plug (2) is inserted into the accommodation cavity (111), covers the second-level step (1122), and is blocked by the first-level step (1121), so that a drainage gap (3) is left between the mating plug (2) and the bottom of the accommodation cavity (111).

2. The socket with a waterproof function according to claim 1, characterized in that, The boss (112) is a plastic stepped ring. The outer circle of the second-level step (1122) is aligned with the outer contour of the stepped position of the metal terminal (12), and the first-level step (1121) matches the end of the jack of the mating plug (2).

3. The socket with a waterproof function according to claim 2, characterized in that, The height of the first-level step (1121) is 2-3 mm.

4. The socket with a waterproof function according to claim 3, characterized in that, The height of the second-level step (1122) is 1-3 mm.

5. The socket with a waterproof function according to claim 1, characterized in that, The encapsulation part (113) further includes a relief hole (114) facing away from the opening direction of the accommodation cavity (111).

6. The socket with a waterproof function according to claim 5, characterized in that, The raised part of the metal terminal (12) is clamped in the relief hole (114), and the relief hole (114) is a blind hole.

7. The socket with a waterproof function according to claim 1, characterized in that, There are two or three metal terminals (12).

8. A socket with a waterproof function according to any one of claims 1-7, characterized in that, One end of the mating plug (2) is provided with a jack. The size and position of the jack correspond to the metal terminal (12). The other end of the mating plug (2) is fixedly connected with a power cord.

9. The socket with a waterproof function according to claim 8, characterized in that, The end of the jack abuts against the first-level step (1121), so that a drainage gap (3) is formed between the end of the mating plug (2) and the bottom of the accommodation cavity (111). A groove is provided outside the boss (112).

10. The socket with a waterproof function according to claim 9, characterized in that, The socket (1) is embedded inside the product housing, and the socket (1) is fixed on the product housing by a clamping method or a threaded connection method.

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