Through-wall type connector

Abstract

The utility model relates to a through-wall type connector, which belongs to the technical field of connectors, and comprises a socket, a sealing gasket and a protective cover, the socket comprises a socket shell, a fence, a reinforcing rib and a circular mounting column; and the protective cover is clamped on the socket shell. After the structure is adopted, the metal terminal has the following advantages that the side surface of the metal terminal is provided with the through hole, so that electroplating liquid can flow out smoothly, and the bad problems of incomplete coating and the like are solved. And meanwhile, in rubber coating injection molding, a rotation stopping function is achieved, and the problem that the terminal is separated from the rubber coating shell due to overlarge torque when the bolt is fastened is solved. The sealing gasket is provided with the protruding rib positions, after the sealing gasket is pressed tightly, the filling rate of the sealing gasket is reduced under the condition that the requirement of the protection grade is met, the problem that the sealing gasket overflows out of the socket installation panel is solved, the reinforcing ribs are arranged, the strength is improved, and the problem that the shell is twisted to be cracked due to the fact that torque is too large when bolts are fastened is solved. And the performance of the product can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a through-wall connector. Background Art

[0002] Through-the-wall connectors are mostly used in energy storage, industry, new energy and other fields. The equipment may be exposed to water and splashing, and the protection level is required to be high, generally IP67 and above. The connector usually uses glue to assemble the terminal in the shell or sets a seal between the terminal and the shell to meet the protection level requirements. There are also manufacturers on the market that use direct glue injection molding for the terminal.

[0003] Secondly, in order to enhance the conductivity and environmental protection of connector terminals, plating is usually provided. Terminals are often connected to conductors such as cables or copper bars with bolts, and long blind holes with internal threads are often used on terminals to connect to external device conductors.

[0004] The disadvantages of existing connectors are as follows:

[0005] The solution of gluing the terminal in the housing or providing a seal between the terminal and the housing to achieve the protection level has a cumbersome assembly process and increases the assembly cost.

[0006] Because the terminal material is metal with good electrical conductivity, its shrinkage rate is quite different from that of plastic material. After the injection molding cools down, a gap is easily generated between the terminal and the plastic, resulting in protection failure, and thus failing to meet the IP67 protection level requirements.

[0007] During electroplating, the plating liquid cannot enter the long blind hole of the internal thread, and the thread cannot be completely covered by the plating layer, which easily leads to copper exposure and blackening. This defect not only affects the appearance of the product, but also causes rust and corrosion in the connector thread, increases contact resistance, increases the heat rise of the conductor, and thus reduces the service life of the connector.

[0008] When the terminal is connected to the internal threaded blind hole, the customer may easily separate the terminal from the rubber-encapsulated housing due to excessive torque when tightening the bolts during the installation of the connector.

[0009] When customers fix the connector on the installation panel, the sealing gasket is prone to overflow, affecting the appearance. In addition, the overflowing part of the sealing gasket is prone to damage, shortening its service life.

[0010] When customers are installing the connector, they may easily crack the shell due to excessive torque when tightening the bolts. Utility Model Content

[0011] The utility model aims to solve the above technical problems and provides a through-the-wall connector.

[0012] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0013] A through-wall connector comprises a socket, a sealing gasket and a protective cover, wherein the socket comprises a socket housing, a flange, a fence at the upper end of the socket housing, a reinforcing rib at the upper end of the flange and a circular mounting column at the lower end of the socket housing;

[0014] The sealing gasket is installed on the outside of the circular mounting column;

[0015] A metal terminal is injection-molded inside the socket housing, and a groove is provided on the outer ring of the metal terminal;

[0016] The protection cover is mounted on the socket housing.

[0017] Preferably, according to the wall-penetrating connector described in the claim, it is characterized in that: a buckle is installed on the protective cover, and a buckle groove for matching with the buckle is provided on the socket housing.

[0018] Preferably, a sealing gasket installation through hole is provided on the sealing gasket for use with a circular installation column.

[0019] Preferably, a terminal internal thread hole is provided inside the upper end of the metal terminal.

[0020] Preferably, a sealing plane is provided at the bottom of the internal threaded hole of the terminal.

[0021] Preferably, a through hole is provided on the side of the metal terminal and the through hole passes through the bottom of the internal threaded hole of the terminal.

[0022] Preferably, concave and convex ribs are arranged on the sealing gasket.

[0023] After adopting the above structure, the utility model has the following advantages:

[0024] The through-wall connector of the utility model has a through hole on the side of the terminal, and the electroplating liquid can flow out smoothly, solving the problem of incomplete coating coverage. At the same time, it has a rotation-stopping function in the overmolding, solving the problem of the terminal and the overmolding shell being separated due to excessive torque when tightening the bolt.

[0025] With the through-the-wall connector of the utility model, the sealing pad is provided with a protruding rib position, and after the sealing pad is compressed, the filling rate of the sealing pad is reduced, thereby solving the problem of the sealing pad overflowing outside the socket installation panel.

[0026] By adopting the through-the-wall connector of the utility model, the socket is provided with reinforcing ribs to increase the strength, thereby solving the problem of the shell being cracked due to excessive torque when tightening the bolts.

[0027] Through the above improvements, the performance of the product can be greatly improved.

[0028] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is an exploded view of the utility model;

[0031] Figure 2 It is the front view of the metal terminal of the utility model;

[0032] Figure 3 It is a cross-sectional view of AA of the utility model;

[0033] Figure 4 It is a side view of the socket of the utility model;

[0034] Figure 5 It is a cross-sectional view of BB of the utility model;

[0035] Figure 6 It is a top view of the socket of the utility model.

[0036] As shown in the figure: 1. socket; 11. socket housing; 111. fence; 112. flange; 113. reinforcing rib; 114. circular mounting column; 115. snap groove; 12. metal terminal; 121. end face A; 122. end face B; 123. through hole; 124. groove; 125. sealing plane; 2. sealing gasket; 21. sealing gasket mounting through hole; 3. protective cover; 31. snap. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The utility model is further described in detail below in conjunction with the full text.

[0040] Combined with Figure 1-Figure 6 A through-the-wall connector includes a socket 1, a sealing gasket 2 and a protective cover 3. The socket 1 includes a socket housing 11, a flange 112, a fence 111 at the upper end of the socket housing 11, a reinforcing rib 113 at the upper end of the flange 112 and a circular mounting column 114 at the lower end of the socket housing 11; a circle of raised fences 111 is provided on the surface where the flange 112 and the sealing gasket 2 match, and bolt holes are correspondingly provided on the flange 112 and the sealing gasket 2 to fix the sealing gasket 2 to prevent it from shifting or overflowing during installation. In addition, the circular mounting column and the sealing gasket have an interference fit, so that the sealing gasket is not easy to fall off during transportation and installation.

[0041] The sealing gasket 2 is installed on the outside of the circular mounting column 114;

[0042] The socket housing 11 is encapsulated with a metal terminal 12 by injection molding, wherein the metal terminal 12 is fixed in the socket housing 11 by injection molding, and at least one circle of grooves 124 for exhaust and axial fixation is arranged on the outer cylinder of the metal terminal 12.

[0043] Evenly distributed bolt holes are provided on the flange 112 for connecting the socket to the mounting panel. Evenly distributed reinforcing ribs 113 are provided above the flange 112 to prevent the metal terminal 12 from being separated from the rubber-coated socket housing 11 and the socket from being cracked due to excessive torque when the customer tightens the bolts to install the connector, thereby improving the overall pressure resistance of the connector.

[0044] The A end face 121 and the B end face 122 of the metal terminal 12 are connected to the conductors inside and outside the device respectively. The connection form of the A end face 121 of the metal terminal 12 is not limited, and can be in the form of internal thread, external thread, through hole, waist hole, etc. The B end face 122 is provided with an internal thread structure. The metal terminal 12 is placed in an appropriate position in the rear mold. After the mold is closed, the front mold has a structure that matches the sealing plane at the bottom of the internal thread of the terminal B face 122. Preferably, the structure can be split into inserts.

[0045] The protection cover 3 is snap-fitted onto the socket housing 11 .

[0046] A buckle 31 is installed on the protective cover 3, and a buckle slot 115 is provided on the socket housing 11 to cooperate with the buckle 31. The protective cover 3 is installed to cover the exposed conductor to prevent electric shock.

[0047] The sealing gasket 2 is provided with a sealing gasket installation through hole 21 for use with the circular installation column 114.

[0048] The upper end of the metal terminal 12 is provided with a terminal internal thread hole.

[0049] The bottom of the terminal internal thread hole is provided with a sealing plane 125, and the sealing plane 125 has at least a distance of 0.5mm on one side to match the mold. The metal terminal 12 is encapsulated by injection molding inside the socket housing 11, and sealed at the bottom of the internal thread to ensure a tight connection.

[0050] A through hole 123 is defined on the side of the metal terminal 12 and passes through the bottom of the internal thread hole of the terminal.

[0051] Concave and convex ribs are arranged on the sealing gasket 2 to make the force more uniform and concentrated, improve the sealing performance, and reduce the volume of the sealing gasket 2. After the sealing gasket is compressed, the filling rate of the sealing gasket 2 is reduced, thereby preventing the sealing gasket 2 from overflowing from the socket installation panel and increasing the aesthetic performance.

[0052] The utility model introduces an innovative through-the-wall connector to achieve a more stable and reliable connection and more efficient protection performance. The connector consists of a socket 1, a sealing pad 2, and a protective cover 3. The structure, functional modules and their interrelationships are described in detail below.

[0053] The socket 1 comprises a socket housing 11 and a metal terminal 12. The socket housing is provided with a flange 112, and the flange 112 is provided with evenly distributed bolt holes, which are intended to be firmly connected to the mounting panel to ensure the firmness and stability of the connector during use.

[0054] To further strengthen the structure, evenly distributed reinforcing ribs 113 are provided above the flange 112 to prevent the metal terminal 12 from being separated from the rubber-coated socket housing 11 and the socket 1 from being twisted apart due to excessive torque when the customer tightens the bolts to install the connector, thereby improving the overall pressure resistance of the connector.

[0055] In addition, a circular mounting column 114 is designed on the socket housing 11 for interference fit with the sealing gasket 2. A raised fence 111 is provided on the surface where the socket flange 112 and the sealing gasket 2 are matched, which can fix the sealing gasket 2 to prevent it from shifting or overflowing during installation. Three buckle grooves 115 are provided on the fence for matching with the protective cover 3.

[0056] The metal terminal 12 is a key component of the socket 1. Figure 1-Figure 4As shown, it is firmly embedded in the socket housing 11 by means of overmolding. The A end face 121 and the B end face 122 of the metal terminal are connected to the conductor inside the device and the conductor outside the device respectively.

[0057] The connection form of the A end surface 121 is not limited and can be in the form of internal thread, external thread, through hole, waist hole, etc.

[0058] Among them, the B end face 122 connected to the external conductor of the device is provided with an internal thread structure, and a through hole 123 is provided on the side of the cylinder, and the through hole 123 runs through the bottom of the internal thread. During electroplating, bubbles can be discharged from the through hole in time, and the thread can be completely covered by the plating layer, the conductivity is better, the contact resistance is smaller, and the setting of the through hole 123 plays a role in stopping the rotation in the molding of the socket, preventing the terminal from being separated from the rubber-coated socket shell due to excessive torque of the terminal when installing the bolt.

[0059] The bottom of the terminal internal thread hole is also provided with a sealing plane 125. The sealing plane 125 has at least a distance of 0.5 mm on one side to cooperate with the mold insert.

[0060] At least one circle of grooves 124 is provided on the cylindrical surface of the terminal, which helps to increase the exhaust and tightening force, so that the connection between the socket housing 11 and the metal terminal 12 is tighter and the connection strength is greater, aiming to enhance the protection capability of the connector.

[0061] The sealing gasket 2 is evenly distributed with bolt holes corresponding to the positions of the threaded mounting holes of the socket. A sealing gasket mounting through hole 21 is provided in the center of the sealing gasket to cooperate with the circular mounting column 114 on the socket housing. Preferably, it is designed as an interference fit to prevent the sealing gasket from falling off during transportation and installation.

[0062] Concave and convex ribs are arranged on the sealing gasket 2, and the ribs reduce the contact area between the sealing gasket and the equipment installation panel when the sealing gasket is installed, and the pressure is more concentrated. This design not only helps the sealing gasket to better perform its protective function, but also effectively prevents the sealing gasket from overflowing from the socket installation panel due to excessive filling.

[0063] The protective cover 3 is provided with three buckles 31 which cooperate with the buckle grooves 115 of the socket housing. When the B end surface 122 is connected to the external conductor of the device, the exposed conductor is covered to prevent electric shock.

[0064] During the connector socket molding process:

[0065] The parting surface is set at the socket flange, and the metal terminal 12 is placed in the rear mold and fixed in an appropriate position. After the mold is closed, the front mold has a structure that matches the sealing plane 125 at the bottom of the internal thread of the B end face. Preferably, the structure can be split into an insert. In order to avoid empty threaded holes, the insert is cylindrical, and the insert and the internal thread are clearance-matched. The insert and the sealing plane 125 at the bottom of the terminal have a contact surface of at least 0.5 mm on one side for sealing, so as to avoid leakage of glue at the bottom of the internal thread.

[0066] When the utility model is implemented, Figure 1-Figure 6 As shown, the socket 1 includes a socket housing 11, a fence 111, a flange 112, a reinforcing rib 113, a circular mounting column 114, a snap groove 115, a metal terminal 12 including an A end face 121, a B end face 122, a through hole 123, a groove 124 and a sealing gasket 2, a protective cover 3, and a snap 31. The reasonable combination and mutual relationship of these functional modules form an efficient operation of the overall connector.

[0067] The molding and assembly process of the connector is:

[0068] Processing and electroplating of metal terminals 12 (after the terminals are processed, a layer of plating is applied to the terminals through electroplating processes such as rack plating, barrel plating, and continuous plating);

[0069] Injection molding of socket 1 (with inserts, vertical machine is preferred);

[0070] 2.1 Mold opening (when opening the mold, the front mold and the rear mold move relative to each other, the middle is opened, and the bottom of the terminal is ejected.);

[0071] 2.2 Placing the metal terminal 12 (placing the metal terminal 12 on the contoured lower die core);

[0072] 2.3 Mould closing (the insert is in close contact with the sealing plane 125 at the bottom of the terminal internal thread hole);

[0073] 2.4 Injection molding (adjust injection molding process parameters according to actual conditions);

[0074] Installation of the sealing gasket 2 (the circular mounting column 114 on the socket housing is interference fit with the sealing gasket mounting through hole 21, and the sealing gasket 2 is aligned with the raised fence 111 on the socket flange 112 and the evenly distributed bolt holes);

[0075] Install the protective cover 3 (align the buckle 31 on the protective cover with the buckle groove 115 of the socket to install the protective cover);

[0076] Installation and use (first remove the protective cover 3 and install it from the outside of the equipment, with the side with the sealing gasket 2 facing the equipment installation panel. Fasten the flange 112 with bolts. The terminal A end face 121 and the terminal B end face 122 are respectively connected to the conductor. The reinforcing ribs 113 on the socket shell enhance the strength of the cylindrical surface of the socket shell and the socket flange to prevent the socket shell from being damaged when tightening the terminals. Finally, install the protective cover 3 on the socket 1 to cover the exposed conductor to prevent electric shock.).

[0077] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A through-wall connector, characterized in that: The invention comprises a socket (1), a sealing gasket (2) and a protective cover (3), wherein the socket (1) comprises a socket housing (11), a flange (112), a fence (111) at the upper end of the socket housing (11), a reinforcing rib (113) at the upper end of the flange (112) and a circular mounting column (114) at the lower end of the socket housing (11); The sealing gasket (2) is installed on the outside of the circular installation column (114); A metal terminal (12) is injection-molded inside the socket housing (11), and a groove (124) is provided on the outer ring of the metal terminal (12); The protective cover (3) is clamped on the socket housing (11).

2. A through-the-wall connector according to claim 1, characterized in that: A buckle (31) is mounted on the protective cover (3), and a buckle groove (115) for cooperating with the buckle (31) is provided on the socket housing (11).

3. A through-the-wall connector according to claim 1, characterized in that: The sealing gasket (2) is provided with a sealing gasket installation through hole (21) for use with the circular installation column (114).

4. A through-the-wall connector according to claim 1, characterized in that: A terminal internal thread hole is provided inside the upper end of the metal terminal (12).

5. A through-the-wall connector according to claim 4, characterized in that: A sealing glue plane (125) is provided at the bottom of the terminal internal threaded hole.

6. A through-the-wall connector according to claim 4, characterized in that: A through hole (123) is provided on the side of the metal terminal (12), and the through hole (123) passes through the bottom of the internal threaded hole of the terminal.

7. The through-the-wall connector according to claim 1, characterized in that: Concave and convex ribs are arranged on the sealing gasket (2).

Images