Multi-core watertight electrical socket

Abstract

This utility model belongs to the field of electrical connector technology, and particularly relates to a multi-core watertight electrical socket, including a socket housing and electrical pins. The socket housing has multiple axially distributed pin mounting holes. The electrical pins are fitted with insulating sleeves and then assembled into the pin mounting holes. The insulating sleeve has axially distributed mating holes in its center that match the electrical pins. The electrical pins have barbed structures with a stepped surface second, the diameter of which is larger than the diameter of the mating hole. The insulating sleeve is deformed by the stepped surface second and subjected to bidirectional compression under the interaction of the electrical pins and the socket housing. The multi-core watertight electrical socket in this technical solution contains multiple electrical pins. The electrical pins are tightly fitted with the socket housing through the insulating sleeve, achieving independent sealing between them. The electrical pins and the socket housing are insulated by the insulating sleeve to meet the voltage withstand and insulation resistance performance requirements of the electrical contacts.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector technology, and particularly relates to multi-core watertight electrical sockets. Background Technology

[0002] Existing watertight electrical sockets generally achieve longitudinal sealing requirements by glass sintering or by injection molding the inner core and electrical pins, and then using a sealing ring.

[0003] Sintered glass watertight sockets typically use stainless steel for the socket housing, as this material deforms little when heated, resulting in a relatively high yield. When titanium alloy is used for the socket housing, the larger thermal expansion and deformation of titanium alloy necessitates additional machining after the glass sintering process to achieve the required dimensions for sealing the socket housing with the chassis. However, during this additional machining, machine vibrations can cause micro-cracks in the glass, leading to a relatively high scrap rate. Furthermore, after prolonged use, the socket may exhibit a lack of insulation resistance between the pins.

[0004] Watertight sockets with injection-molded inner cores and electrical pins require injection molds, which result in relatively high initial mold investment costs, and once the mold is formed, it cannot be modified.

[0005] To address the above issues, a multi-core watertight electrical socket is designed. Utility Model Content

[0006] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0007] A multi-core watertight electrical socket includes a socket housing and electrical pins. The socket housing has multiple axially distributed pin mounting holes. The electrical pins are fitted with insulating sleeves and then assembled into the pin mounting holes.

[0008] The insulating sleeve has axially distributed mating holes that match the electrical pins in the middle. The electrical pins have barbs, and the barbs have a stepped surface II. The diameter of the stepped surface II is larger than the diameter of the mating holes. The insulating sleeve is deformed by being lifted by the stepped surface II and is subjected to bidirectional compression under the cooperation of the electrical pins and the socket housing.

[0009] As a preferred embodiment of the above technical solution, both ends of the pin mounting hole are provided with annular groove 1, the electric pin is provided with multiple annular groove 2 at the position corresponding to the annular groove 1, and the electric pin and the pin mounting hole are sealed with glue at the position corresponding to the annular groove 1.

[0010] As a preferred embodiment of the above technical solution, the electrical pin is provided with circumferentially distributed steps, and the middle part of the insulating sleeve is provided with a stepped surface three that communicates with the mating hole, and the steps and the stepped surface three are used in conjunction.

[0011] As a preferred embodiment of the above technical solution, the barb structure has an inclined surface.

[0012] As a preferred embodiment of the above technical solution, the tail of the electrical connector is provided with a wire bonding cup.

[0013] As a preferred embodiment of the above technical solution, the outer ring of the insulating sleeve is provided with a bevel.

[0014] As a preferred embodiment of the above technical solution, the outer ring of the insulating sleeve is provided with a stepped surface four, and the pin mounting hole extends radially inward to form a stepped surface one. When the electric pin is fitted into the insulating sleeve and installed in the pin mounting hole, the stepped surface four abuts against the stepped surface one.

[0015] As a preferred embodiment of the above technical solution, the front end of the socket housing is provided with threads;

[0016] The socket housing has five buttons inside.

[0017] As a preferred embodiment of the above technical solution, the panel of the socket housing is provided with a plurality of mounting holes.

[0018] As a preferred embodiment of the above technical solution, the socket housing is provided with multiple O-ring grooves, and the O-rings are assembled inside the O-ring grooves.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The multi-core watertight electrical socket in this technical solution has a pin mounting hole in the socket housing for mounting electrical pins. After the electrical pin is fitted with an insulating sleeve, it is assembled into the pin mounting hole. The insulating sleeve is deformed by the stepped surface on the electrical pin and is subjected to bidirectional compression under the cooperation of the electrical pin and the socket housing. That is, the electrical pin and the insulating sleeve are interference fit, and the insulating sleeve and the pin mounting hole are interference fit, thereby realizing the self-sealing function of the electrical pin and each pin mounting hole of the socket housing.

[0021] 2. The multi-core watertight electrical socket in this technical solution contains multiple electrical pins. These pins are tightly fitted to the socket housing via insulating sleeves, achieving independent sealing between them. The insulating sleeves also provide insulation between the pins and the socket housing, ensuring the electrical contacts meet voltage withstand and insulation resistance requirements. This multi-core watertight electrical socket can withstand longitudinal water pressure exceeding 20 MPa. This fundamentally solves the problem of excessive deformation during titanium alloy glass sintering leading to product scrap in existing technologies, effectively avoiding mold investment and reducing raw material costs. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of the multi-core watertight electrical socket in Embodiment 1;

[0023] Figure 2 The diagram shown is a structural schematic of the socket housing in Embodiment 1;

[0024] Figure 3 What is shown is Figure 2 Right view diagram in the middle;

[0025] Figure 4 What is shown is Figure 2 The I-view in the middle;

[0026] Figure 5 The diagram shown is a structural schematic of the electrical connector in Embodiment 1;

[0027] Figure 6 What is shown is Figure 5 A schematic diagram of a local structure in the image;

[0028] Figure 7 The diagram shown is a structural schematic of the insulating sleeve in Embodiment 1;

[0029] Figure 8 The diagram shown is a schematic representation of the state in which the electrical pin and insulating sleeve are not properly assembled in Embodiment 1;

[0030] Figure 9 The diagram shown illustrates the alignment of the electrical pin and the insulating sleeve in Embodiment 1.

[0031] Figure 10 The diagram shown is a schematic of the state in which the electrical pin with the insulating sleeve is not properly assembled with the socket housing in Embodiment 1;

[0032] Figure 11 The diagram shows the state in which the electrical pin with the insulating sleeve is assembled with the socket housing in Embodiment 1.

[0033] Reference numerals: Socket housing 1; Thread 11; O-ring groove 12; Mounting hole 13; Five-key 14; Ring groove 15; Pin mounting hole 16; Stepped surface 161;

[0034] 2. O-ring; 3. Electrical pin; 31. Second annular groove; 32. Step; 33. Barb structure; 331. First bevel; 332. Second step surface; 34. Solder spool;

[0035] Insulating sleeve 4; Step surface three 41; Mating hole 42; Inclined surface two 43; Step surface four 44; Adhesive 5. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0037] Example 1

[0038] like Figure 1 , Figure 2 , Figure 5, Figure 7 As shown, a multi-core watertight electrical socket includes a socket housing 1 and electrical pins 3. The socket housing 1 is provided with multiple axially distributed pin mounting holes 16. The electrical pins 3 are fitted with insulating sleeves 4 and then assembled into the pin mounting holes 16. The insulating sleeves 4 are made of plastic and their structural dimensions can meet the voltage withstand and insulation resistance performance between the socket housing 1 and the electrical pins 3.

[0039] The insulating sleeve 4 has axially distributed mating holes 42 that match the electrical pins 3 in the middle. The electrical pins 3 have barbed structures 33. The electrical pins 3 are fixedly connected to the insulating sleeve 4 through the barbed structures 33. The barbed structures 33 have a stepped surface 332. The diameter of the stepped surface 332 is larger than the diameter of the mating holes 42. The deformation of the insulating sleeve 4 caused by being lifted by the stepped surface 332 and the bidirectional compression under the cooperation of the electrical pins 3 and the socket housing 1, thereby realizing the self-sealing function of the electrical pins 3 and the pin mounting holes 16 of the socket housing 1.

[0040] The multi-core watertight electrical socket in this technical solution achieves a self-sealing function between the electrical pin 3 and the socket housing 1 by setting pin mounting holes 16 in the socket housing 1 for mounting electrical pins 3. After the electrical pin 3 is fitted with an insulating sleeve 4, it is assembled into the pin mounting hole 16. The insulating sleeve 4 is deformed by being pushed up by the stepped surface 332 on the electrical pin 3 and is subjected to bidirectional compression under the cooperation of the electrical pin 3 and the socket housing 1. That is, the electrical pin 3 and the insulating sleeve 4 are interference-fitted, and the insulating sleeve 4 and the pin mounting hole 16 are interference-fitted.

[0041] The multi-core watertight electrical socket in this technical solution contains multiple electrical pins 3. Each pin 3 is tightly fitted to the socket housing 1 via an insulating sleeve 4, achieving an independent seal between them. The insulating sleeve 4 also provides insulation between the pins 3 and the socket housing 1, meeting the voltage withstand and insulation resistance requirements of the electrical contacts. This multi-core watertight electrical socket can withstand longitudinal water pressure exceeding 20 MPa. It fundamentally solves the problem of excessive deformation during titanium alloy glass sintering leading to product scrapping in existing technologies, effectively avoiding mold investment and reducing raw material costs.

[0042] like Figure 1 , Figure 2 , Figure 5 As shown, both ends of the pin mounting hole 16 are provided with annular grooves 15. The electrical pin 3 has multiple annular grooves 31 corresponding to the positions of the annular grooves 15. The positions of the electrical pin 3 and the pin mounting hole 16 corresponding to the annular grooves 15 are sealed with epoxy glue 5. The glue 5 penetrates into the annular grooves 15 and 31, making the adhesion between the electrical pin 3 and the glue 5 more reliable, and the adhesion between the glue 5 and the pin mounting hole 16 more reliable, thus improving the assembly reliability of the multi-core watertight electrical socket.

[0043] like Figure 1 , Figure 5 , Figure 7 As shown, the electrical pin 3 is provided with circumferentially distributed steps 32, and the middle part of the insulating sleeve 4 is provided with a step surface 31 that communicates with the mating hole 42. The steps 32 and the step surface 31 are used in conjunction. When assembling the electrical pin 3 and the insulating sleeve 4, the electrical pin 3 passes through the mating hole 42, and the steps 32 and the step surface 31 abut against each other, which plays a role in limiting the installation of the electrical pin 3 and the insulating sleeve 4, and ensures the assembly stability between the two.

[0044] like Figure 6 As shown, the barb structure 33 has a bevel 331; when the insulating sleeve 4 is fitted onto the electrical pin 3, the bevel 331 serves as a guide, improving the ease of assembly.

[0045] like Figure 5 As shown, the tail of the electrical connector 3 is provided with a wire bonding cup 34, which is used by the customer to install the wire.

[0046] To achieve rapid and stable assembly between the insulating sleeve 4 and the pin mounting hole 16, this technical solution will be further optimized, such as... Figure 7 As shown, the outer ring of the insulating sleeve 4 is provided with a second inclined surface 43. When the electric pin 3 is fitted with the insulating sleeve 4 and assembled into the pin mounting hole 16, the second inclined surface 43 has a guiding function.

[0047] like Figure 7 As shown, the outer ring of the insulating sleeve 4 is provided with a stepped surface 44, and the pin mounting hole 16 extends radially inward to form a stepped surface 162. When the electric pin 3 is fitted with the insulating sleeve 4 and assembled into the pin mounting hole 16, the stepped surface 44 abuts against the stepped surface 162, limiting the relative position of the electric pin 3, the insulating sleeve 4, and the pin mounting hole 16, thus playing a limiting installation role and ensuring the stability of the assembly.

[0048] The assembly method of the multi-core watertight electrical socket in this technical solution includes the following steps: 1. Assembling the electrical pins 3 and the insulating sleeve 4, such as... Figure 8 As shown, the electrical pin 3 is inserted into the insulating sleeve 4. When it moves to the state shown in view II, the interference fit begins. Since the insulating sleeve 4 is made of plastic, the insulating sleeve 4 begins to deform at this time.

[0049] like Figure 9 As shown, the electrical pin 3 and the insulating sleeve 4 are installed in place. At this time, the insulating sleeve 4 is deformed externally due to the barb structure 33 on the electrical pin 3 (see view III).

[0050] 2. Assemble the electrical pin 3 with the insulating sleeve 4 into the pin mounting hole 16, such as... Figure 10 , Figure 11As shown, the electrical pin 3 and the insulating sleeve 4 are inserted together into the pin mounting hole 16 of the socket housing 1 under the guidance of the inclined plane 43. Since both the electrical pin 3 and the socket housing 1 are metal parts, and the pin mounting hole 16 and the insulating sleeve 4 are tightly fitted, at this time... Figure 9 The deformation of the insulating sleeve 4 shown is due to the compression between the electrical pin 3 and the socket housing 1 (see view IV), thereby achieving the self-sealing function of each hole of the electrical pin 3 and the socket housing 1.

[0051] 3. After the electrical connector 3 is fully assembled, as follows: Figure 1 As shown, epoxy resin is used to pot the position of the annular groove 15 between the electrical pin 3 and the pin mounting hole 16 to enhance the reliability of the watertight electrical socket.

[0052] The multi-core watertight electrical socket in this technical solution is installed on the mounting panel and used in conjunction with a plug. To achieve the installation of the socket and the proper use of the socket and plug, the socket housing 1 is further optimized, such as... Figure 2 As shown, the front end of the socket housing 1 is provided with a thread 11 for connecting the plug to the multi-core watertight electrical socket.

[0053] like Figure 3 As shown, the socket housing 1 has a five-button 14 inside, which serves to prevent rotation after the plug and the multi-core watertight electrical socket are connected.

[0054] like Figure 3 As shown, the socket housing 1 has several mounting holes 13 on its panel. When the multi-core watertight electrical socket is installed on the mounting panel, it is connected to the mounting panel by screws passing through the mounting holes 13 on the socket housing 1, thereby achieving the installation and fixation of the multi-core watertight electrical socket.

[0055] like Figure 1 , Figure 2 As shown, the socket housing 1 is provided with multiple O-ring grooves 12, and the O-ring 2 is assembled inside the O-ring grooves 12 to realize the sealing function between the multi-core watertight electrical socket and the mounting panel.

[0056] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. Multi-core watertight electrical socket comprising a socket housing (1) and electrical pins (3), characterized in that, The socket housing (1) is provided with a plurality of axially distributed pin mounting holes (16), and the electrical pin (3) is fitted with an insulating sleeve (4) and then assembled into the pin mounting holes (16); The insulating sleeve (4) has axially distributed mating holes (42) that match the electric pin (3) in the middle. The electric pin (3) has a barb structure (33) with a stepped surface (332) and the diameter of the stepped surface (332) is larger than the diameter of the mating hole (42). The insulating sleeve (4) is deformed by being lifted by the stepped surface (332) and is subjected to bidirectional compression under the cooperation of the electric pin (3) and the socket housing (1).

2. The multi-fiber watertight electrical outlet of claim 1, wherein, Both ends of the pin mounting hole (16) are provided with annular groove 1 (15), and the electric pin (3) is provided with multiple annular groove 2 (31) at the position corresponding to annular groove 1 (15). The electric pin (3) and the pin mounting hole (16) are sealed with glue (5) at the position corresponding to annular groove 1 (15).

3. The multi-fiber watertight electrical outlet of claim 1, wherein, The electrical pin (3) is provided with circumferentially distributed steps (32), and the middle part of the insulating sleeve (4) is provided with a step surface three (41) that communicates with the mating hole (42). The steps (32) and the step surface three (41) are used in conjunction.

4. The multi-fiber watertight electrical outlet of claim 3, wherein, The barbed structure (33) has a bevel (331).

5. The multi-core watertight electrical socket according to claim 1, characterized in that, The tail of the electrical connector (3) is provided with a wire bonding cup (34).

6. The multi-core watertight electrical socket according to claim 1, characterized in that, The outer ring of the insulating sleeve (4) is provided with a beveled surface two (43).

7. The multi-core watertight electrical socket according to claim 1, characterized in that, The outer ring of the insulating sleeve (4) is provided with a stepped surface four (44), and the pin mounting hole (16) extends radially inward to form a stepped surface one (162). When the electric pin (3) is fitted with the insulating sleeve (4) and assembled into the pin mounting hole (16), the stepped surface four (44) and the stepped surface one (162) abut against each other.

8. The multi-core watertight electrical socket according to claim 1, characterized in that, The front end of the socket housing (1) is provided with a thread (11); The socket housing (1) is equipped with five buttons (14).

9. The multi-core watertight electrical socket according to claim 1, characterized in that, The socket housing (1) has several mounting holes (13) on its panel.

10. The multi-core watertight electrical socket according to claim 9, characterized in that, The socket housing (1) is provided with multiple O-ring grooves (12), and the O-ring (2) is assembled inside the O-ring grooves (12).

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