Waterproof connector with firm connection
By inserting the snap-on parts and shrapnel on the male head of the waterproof connector and using the design of the protruding clip into the limit slot, the problem that existing waterproof connectors are easily loosened in strong winds and heavy rains is solved, achieving higher plug-on firmness and waterproof performance.
Patent Information
- Application Number
- CN202421753518.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-24
AI Technical Summary
In outdoor windy and rainy weather, existing waterproof connectors are prone to loosening the male and female head connection due to wind blowing, and the sealing ring fails, causing rainwater to penetrate into the connector, causing short circuit.
A waterproof connector including a male and female head is designed. The first contact piece of the male head is embedded in the outside of the clamping member. There are shrapnel and a protruding card on the clamping member. The protruding card can be snapped into the limiting groove of the female head to enhance the firmness of the plug and eliminate gaps through the sealing ring to prevent rainwater from entering.
It effectively improves the firmness of the male and female heads, avoids loosening problems caused by strong winds, and ensures the waterproof performance of the connector through the design of the sealing ring, and prevents short circuits caused by rainwater penetration.
Smart Images
Figure CN222839124U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of connectors, in particular to a waterproof connector with a firm connection. Background Art
[0002] A connector is a structure that connects lines or lines to devices. Its function is to bridge the gap between blocked or isolated circuits in a circuit, so that current can flow and the circuit can achieve its intended function. The form and structure of connectors are ever-changing. There are various forms of connectors depending on the application object, frequency, power, application environment, etc.
[0003] The existing waterproof connector includes a male head and a female head. The male head is plugged into the female head. The contact pin of the male head contacts the contact pin of the female head to conduct the circuit. The male head uses the friction between the contact surface of the male head and the female head to fix the male head on the female head. A sealing ring is installed between the male head and the female head. The sealing ring covers the gap between the male head and the female head, so that water cannot enter the male head and the female head through the gap, thereby preventing water from contacting the contact pin.
[0004] When the above connector is installed outdoors in windy and rainy weather, the male and female plug-in connection method is prone to loosening due to strong winds, causing the sealing ring to fail, and rainwater can easily penetrate into the connector, causing the connector to short-circuit. Utility Model Content
[0005] The utility model aims to provide a waterproof connector with a firm connection, wherein the clamping piece is clamped into the limiting groove to improve the firmness of the plugging of the male head and the female head.
[0006] The technical solution adopted by a waterproof connector with a firm connection disclosed in the utility model is:
[0007] The invention comprises a male connector and a female connector, wherein the male connector comprises a first shell and a first contact member, wherein a plurality of first through holes are provided on the top of the first contact member, wherein a first contact pin is installed in the first through hole, wherein a clamping member is embedded and installed on the outer side of the first contact member, wherein a spring sheet extends from the clamping member, wherein a convex card is provided on the spring sheet, wherein a through groove is provided on the outer side of the first contact member, wherein the spring sheet is located in the through groove, wherein the first contact member is installed in the first shell, wherein the female connector comprises a second shell and a second contact member, wherein a button is provided on the outer side of the second shell, wherein the button is inserted into the second shell, wherein a first sealing ring is sleeved on the outer side of the button, wherein the first sealing ring is sleeved on the outer side of the button, wherein the first sealing ring is sleeved on the outer side of the first contact member, wherein the first contact member is provided with a through groove, wherein the spring sheet is located in the through groove, wherein the first contact member is installed in the first shell, wherein the first contact member is provided with a through groove ... The first sealing ring contacts the second shell, a plug-in groove is provided at the top of the second contact piece, a second through hole is provided at the bottom of the plug-in groove, a second contact pin is installed in the second through hole, a limiting groove is provided on the outer side of the second contact piece, the limiting groove penetrates into the plug-in groove and is connected with the plug-in groove, a second sealing ring is sleeved on the outer side of the second contact piece, the second contact piece is installed in the second shell, the top of the first contact piece is slid into the plug-in groove, both the first shell and the second shell contact the second sealing ring, the convex card is inserted into the limiting groove, the button contacts the convex card, and the first contact pin is electrically connected to the second contact pin.
[0008] As a preferred solution, a contact sheet extends from the convex card, and a contact column is provided on the button, and the contact column contacts the contact sheet.
[0009] As a preferred solution, there are two spring sheets on the clamping part, the spring sheets are located at the top of the clamping part, the two spring sheets are respectively close to the two sides of the clamping part, there are two contact columns, two limiting grooves, and two through grooves.
[0010] As a preferred embodiment, the first contact piece is composed of a first upper shell and a first lower shell, the snap-on piece is located on the outside of the first upper shell, the through groove is located on the outside of the first upper shell, the first through hole penetrates the first upper shell and the first lower shell, a first limiting ring extends on the outside of the first contact pin, and the first limiting ring is fixed between the first upper shell and the first lower shell.
[0011] As a preferred embodiment, two symmetrical first clips are provided at the bottom of the first upper shell, two first positioning columns extend from the bottom of the first upper shell, first clip grooves are provided on both sides of the first lower shell, a first positioning hole is provided on the top of the first lower shell, the first clip is inserted into the first clip groove, the first positioning column is slid into the first positioning hole, and four first limit blocks extend from the outer side of the first lower shell, and the first limit blocks touch the inner wall of the first outer shell.
[0012] As a preferred solution, a first threaded insert is embedded in the outer side of the first lower shell, a first installation groove is opened on the outer side of the first outer shell, a first fixing part and a third sealing ring are provided on the outer side of the first outer shell, the first fixing part passes through the third sealing ring, the first fixing part penetrates into the first outer shell and is connected with the first threaded insert, and the outer side of the third sealing ring respectively contacts the inner wall of the first installation groove and the first fixing part.
[0013] As a preferred embodiment, the second contact piece is composed of a second upper shell and a second lower shell, the second sealing ring is sleeved on the outside of the second upper shell, the plug-in slot is located at the top of the second upper shell, the limit slot is located on the outside of the second upper shell, the second through hole passes through the second upper shell and the second lower shell, a second limit ring extends from the outside of the second contact pin, and the second limit ring is fixed between the second upper shell and the second lower shell.
[0014] As a preferred solution, two symmetrical second clips are provided at the bottom of the second upper shell, two second positioning columns extend from the bottom of the second upper shell, second clip grooves are provided on both sides of the second lower shell, a second positioning hole is provided on the top of the second lower shell, the second clip is inserted into the second clip groove, the second positioning column is slidably inserted into the second positioning hole, and four second limit blocks extend from the outer side of the second lower shell, and the second limit blocks touch the inner wall of the second outer shell.
[0015] As a preferred solution, a second threaded insert is embedded in the outer side of the second lower shell, a second installation groove is opened on the outer side of the second outer shell, a second fixing piece and a fourth sealing ring are provided on the outer side of the second outer shell, the second fixing piece passes through the fourth sealing ring, the second fixing piece penetrates into the second outer shell and is connected with the second threaded insert, and the outer side of the fourth sealing ring respectively contacts the inner wall of the second installation groove and the second fixing piece.
[0016] As a preferred solution, an anti-foolproof groove is provided on the outer side of the first upper shell, and an anti-foolproof protrusion extends from the inner wall of the plug-in slot, and the anti-foolproof protrusion is inserted into the anti-foolproof groove.
[0017] The utility model discloses a waterproof connector with a firm connection, which has the following beneficial effects:
[0018] After the male connector is plugged into the female connector, the clamping piece is inserted into the limiting groove through the convex clamp, so that the male connector can be plugged into the female connector more firmly through the clamping piece, so as to avoid the plugging of the male connector and the female connector being easily loosened by the strong wind when the connector is arranged outdoors and encounters strong wind and heavy rain. The second sealing ring eliminates the gap between the first shell and the second shell, so that rainwater cannot enter the first shell and the second shell, so as to avoid rainwater penetrating the first contact pin and the second contact pin to cause damage to the connector.
[0019] When the male connector needs to be removed from the female connector, the button is pressed so that the button pushes the convex card to deform and bend the spring sheet, thereby allowing the convex card to disengage from the limiting groove, causing the female connector to lose the limiting position of the card connector, making it easier for the male connector to be removed from the female connector; the first sealing ring can eliminate the gap between the button and the first shell, preventing rainwater from entering the second shell, thereby improving the waterproof performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The utility model is a structural schematic diagram of a firmly connected waterproof connector.
[0021] Figure 2 The utility model is a schematic diagram of the male head structure of a waterproof connector with a firm connection.
[0022] Figure 3 The utility model is a schematic diagram of the installation of a first housing and a first contact piece of a firmly connected waterproof connector.
[0023] Figure 4 The utility model is a schematic diagram of the installation of a first contact piece of a firmly connected waterproof connector.
[0024] Figure 5 The utility model is a schematic diagram of the female head structure of a waterproof connector with a firm connection.
[0025] Figure 6 The utility model is a schematic diagram of the installation of a second housing and a second contact piece of a firmly connected waterproof connector.
[0026] Figure 7 The utility model is a schematic diagram of the installation of a second housing and a second contact piece of a firmly connected waterproof connector.
[0027] Figure 8 The utility model is a schematic diagram of the installation of a second contact piece of a firmly connected waterproof connector.
[0028] Fig. 9 It is a partial cross-sectional view of a firmly connected waterproof connector of the utility model.
[0029] Fig.10 The utility model is a waterproof connector with a firm connection Fig. 9 (A area) Local magnified image. DETAILED DESCRIPTION
[0030] The present invention is further described and illustrated below in conjunction with specific embodiments and accompanying drawings:
[0031] Please refer to Figure 1 .
[0032] The utility model discloses a firmly connected waterproof connector, which comprises a male connector 1 and a female connector 4.
[0033] Please refer to Figure 2 and Figure 3 .
[0034] The male connector 1 includes a first housing 2 and a first contact member 3. A first receiving cavity is provided in the first housing 2. The first receiving cavity passes through the top and bottom of the first housing 2 respectively. A limited edge 21 extends from the top of the first housing 2. The external output cable passes through the first receiving cavity from the bottom of the first housing 2.
[0035] The first contact member 3 is installed in the first receiving cavity of the first shell 2, and a first installation groove is opened on the outer side of the first shell 2. A first fixing member 22 and a third sealing ring 221 are provided on the outer side of the first shell 2, and the third sealing ring 221 is placed in the first installation groove; in this embodiment, the first fixing member 22 is preferably a bolt, one end of the first fixing member 22 passes through the third sealing ring 221, and one end of the first fixing member 22 penetrates into the first shell 2 and is connected with the first threaded insert 311. The first fixing member 22 limits the first contact member 3 in the first shell 2 through the first threaded insert 311, and the outer side of the third sealing ring 221 respectively contacts the inner wall of the first installation groove and the first fixing member 22; the third sealing ring 221 can prevent rainwater from entering the first receiving cavity from the gap between the first shell 2 and the first fixing member 22.
[0036] Please refer to Figure 2-Figure 4 .
[0037] The first contact member 3 is composed of a first upper shell 31 and a first lower shell 33. The first threaded insert 311 is located on the outer side of the first upper shell 31. A plurality of first through holes 312 are provided on the top of the first contact member 3. The first through holes 312 are located on the top of the first upper shell 31. The first through holes 312 penetrate the first upper shell 31 and the first lower shell 33. A first contact pin 313 is installed in the first through hole 312. A first limiting ring extends on the outer side of the first contact pin 313. The first limiting ring is fixed between the first upper shell 31 and the first lower shell 33. The first upper shell 31 and the first lower shell 33 limit the first contact pin 313 in the first through hole 312 by fixing the first limiting ring. The external output cable is electrically connected to the first contact pin 313.
[0038] Furthermore, a snap-on member 32 is embedded and installed on the outer side of the first contact member 3, and the snap-on member 32 is located on the outer side of the first upper shell 31; a through slot 314 is provided on the outer side of the first contact member 3, and in this embodiment, two through slots 314 are preferably provided, and the two through slots 314 are parallel to each other, and the through slots 314 and the first contact pin 313 are parallel to each other, and the through slots 314 are located on the outer side of the first upper shell 31, and the through slots 314 are close to the top of the snap-on member 32; a spring piece 321 extends from the snap-on member 32, and in this embodiment Preferably, there are two spring pieces 321, which are located at the top of the clamping member 32, and the two spring pieces 321 are respectively close to the two sides of the clamping member 32. The spring pieces 321 are located in the through slot 314, and there is a certain distance between the spring piece 321 and the bottom of the through slot 314, so that the spring piece 321 can be elastically deformed and bent into the through slot 314 at a certain angle. A convex card 322 is provided on the spring piece 321, and a contact piece 323 extends from the convex card 322; an anti-fool groove 315 is provided on the outer side of the first upper shell 31;
[0039] Furthermore, two symmetrical first buckles 316 are provided at the bottom of the first upper shell 31, and first slots 331 are provided on both sides of the first lower shell 33. The first buckles 316 are inserted into the first slots 331, and the first upper shell 31 is inserted into the first slots 331 of the first lower shell 33 through the first buckles 316, so that the first upper shell 31 can be more firmly installed on the first lower shell 33, and the snap-on connection method also facilitates the assembly of the first upper shell 31 on the first lower shell 33; two first positioning posts 331 are extended from the bottom of the first upper shell 31 17, a first positioning hole is opened at the top of the first lower shell 33, and the first positioning column 317 is slidably inserted into the first positioning hole. The first positioning column 317 can assist the first upper shell 31 to align with the first lower shell 33, so as to facilitate the installation of the first upper shell 31 on the first lower shell 33; four first limit blocks 332 are extended on the outer side of the first lower shell 33, and the first limit blocks 332 touch the inner wall of the first outer shell 2. The first limit blocks 332 can fill the gap between the first contact member 3 and the first outer shell 2 to prevent the first contact member 3 from shaking in the first outer shell 2.
[0040] Please refer to Figure 5-Figure 7 .
[0041] The female connector 4 includes a second housing 5 and a second contact member 6. A second receiving cavity is provided in the second housing 5. The second receiving cavity passes through the top and bottom of the second housing 5 respectively. A button 51 is provided on the outside of the second housing 5. The button 51 penetrates into the second housing 5. A first sealing ring 511 is sleeved on the outside of the button 51. The first sealing ring 511 contacts the second housing 5. A contact column 512 is provided on the button 51. In this embodiment, two contact columns 512 are preferably provided. The two contact columns 512 are spaced a certain distance apart. The contact columns 512 are located in the second receiving cavity. The first sealing ring 511 can eliminate the gap between the button 51 and the first housing 2, so that rainwater cannot enter the second housing 5. The external input cable penetrates into the second receiving cavity from the bottom of the second housing 5.
[0042] The second contact member 6 is installed in the second shell 5, and a second threaded insert 611 is embedded and installed on the outer side of the second contact member 6; a second installation groove is opened on the outer side of the second shell 5, and a second fixing member 52 and a fourth sealing ring 521 are provided on the outer side of the second shell 5, and the fourth sealing ring 521 is placed in the second installation groove. In this embodiment, the second fixing member 52 is preferably a bolt, and the second fixing member 52 passes through the fourth sealing ring 521. The second fixing member 52 penetrates into the second shell 5 and is connected with the second threaded insert 611. The second fixing member 52 limits the second contact member 6 in the second shell 5 through the second threaded insert 611, and the outer side of the fourth sealing ring 521 respectively contacts the inner wall of the second installation groove and the second fixing member 52; the fourth sealing ring 521 can prevent rainwater from entering the second accommodating cavity from the gap between the second shell 5 and the second fixing member 52.
[0043] Please refer to Figure 5-Figure 8 .
[0044] The second contact member 6 is composed of a second upper shell 61 and a second lower shell 62. The second threaded insert 611 is located on the outer side of the second upper shell 61. A plug-in slot 612 is provided on the top of the second contact member 6. The plug-in slot 612 is located on the top of the second upper shell 61. An anti-mock protrusion 613 extends from the inner wall of the plug-in slot 612. A limiting slot 615 is provided on the outer side of the second contact member 6. The limiting slot 615 is located on the outer side of the second upper shell 61. In this embodiment, there are preferably two limiting slots 615. The limiting slots 615 penetrate into the plug-in slot 612 and communicate with it.
[0045] Furthermore, a second through hole 614 is provided at the bottom of the plug-in slot 612, a second contact pin 616 is installed in the second through hole 614, the second through hole 614 passes through the second upper shell 61 and the second lower shell 62, a second limiting ring is extended on the outer side of the second contact pin 616, the second limiting ring is fixed between the second upper shell 61 and the second lower shell 62, the second upper shell 61 and the second lower shell 62 limit the second contact pin 616 in the second through hole 614 by fixing the second limiting ring; the external input cable is electrically connected to the second contact pin 616; a second sealing ring 617 is sleeved on the outer side of the second contact member 6, the second sealing ring 617 is sleeved on the outer side of the second upper shell 61, and the top of the second shell 5 touches the bottom of the second sealing ring 617;
[0046] Furthermore, two symmetrical second buckles 618 are provided at the bottom of the second upper shell 61, and second slots 621 are provided on both sides of the second lower shell 62. The second buckles 618 are inserted into the second slots 621, and the second upper shell 61 is inserted into the second slots 621 of the second lower shell 62 through the second buckles 618, so that the second upper shell 61 can be more firmly installed on the second lower shell 62. The snap-fit design also facilitates the assembly of the second upper shell 61 on the second lower shell 62. Two second positioning columns 61 extend from the bottom of the second upper shell 61. 9. A second positioning hole is provided at the top of the second lower shell 62, and a second positioning column 619 is slidably inserted into the second positioning hole. The second positioning column 619 can assist the second upper shell 61 to align with the second lower shell 62, so as to facilitate the installation of the second upper shell 61 on the second lower shell 62. Four second limit blocks 622 are extended on the outer side of the second lower shell 62, and the second limit blocks 622 touch the inner wall of the second outer shell 5. The second limit blocks 622 can fill the gap between the second contact member 6 and the second outer shell 5 to prevent the second contact member 6 from shaking in the second outer shell 5.
[0047] Please refer to Figure 4 and Figure 8-Figure 10 .
[0048] When the male connector 1 is plugged into the female connector 4, the top of the first contact piece 3 is slid into the plug-in slot 612, so that the first contact pin 313 touches the second contact pin 616 and is electrically connected thereto, so that the current of the external output cable can be conducted to the external input cable through the first contact pin 313 and the second contact pin 616 in sequence; the top of the first housing 2 touches the top of the second sealing ring 617, the top of the second housing 5 touches the bottom of the second sealing ring 617, the inner side of the limiting edge 21 touches the outer side of the second sealing ring 617, and the second sealing ring 617 eliminates the gap between the first housing 2 and the second housing 5, so that rainwater cannot enter the first housing 2 and the second housing 5, thereby preventing rainwater from penetrating the first contact pin 313 and the second contact pin 616 and causing damage to the connector; foolproof The protrusion 613 is inserted into the anti-mistake groove 315. The anti-mistake protrusion 613 and the anti-mistake groove 315 allow workers to confirm the angle at which the male connector 1 is inserted into the female connector 4 during insertion, which is convenient for workers to install the connector; the protruding card 322 is inserted into the limiting groove 615, and the contact piece 323 of the protruding card 322 touches the contact column 512 of the button 51. The contact piece 323 pushes the button 51 to pop up on the second shell 5, and the popped-up button 51 can remind workers that the male connector 1 is inserted into the female connector 4 and connected in place. The snap-in piece 32 is inserted into the limiting groove 615 through the protruding card 322, so that the male connector 1 can be inserted into the female connector 4 through the snap-in piece 32 to increase the firmness of the insertion, so as to avoid the male connector 1 and the female connector 4 from being easily loosened due to strong winds when the connector is arranged outdoors and encounters strong winds and heavy rains.
[0049] When the male connector 1 is removed from the female connector 4, by pressing the button 51, the contact column 512 pushes the contact sheet 323 to elastically deform the spring sheet 321 to bend at a certain angle, and the protruding card 322 disengages from the limiting groove 615, so that the female connector 4 loses the limiting position of the clamping member 32, making it easier for the male connector 1 to be removed from the female connector 4.
[0050] The utility model provides a waterproof connector with a firm connection. After the male head is plugged into the female head, the clamping piece is inserted into the limiting groove through the convex clamp, so that the male head can be plugged into the female head through the clamping piece to increase the firmness of the plugging, thereby preventing the male head and the female head from being easily loosened due to the blowing of strong winds when the connector is arranged outdoors and encounters strong winds and heavy rains. The second sealing ring eliminates the gap between the first shell and the second shell, so that rainwater cannot enter the first shell and the second shell, thereby preventing rainwater from penetrating the first contact pin and the second contact pin to cause damage to the connector.
[0051] When the male connector needs to be removed from the female connector, the button is pressed so that the button pushes the convex card to deform and bend the spring sheet, thereby allowing the convex card to disengage from the limiting groove, causing the female connector to lose the limiting position of the card connector, making it easier for the male connector to be removed from the female connector; the first sealing ring can eliminate the gap between the button and the first shell, preventing rainwater from entering the second shell, thereby improving the waterproof performance of the connector.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. A waterproof connector with a secure connection, characterized in that: Includes male and female connectors; The male connector includes a first housing and a first contact member, a plurality of first through holes are formed on the top of the first contact member, a first contact pin is installed in the first through hole, a clamping member is embedded and installed on the outer side of the first contact member, a spring sheet extends from the clamping member, a convex clamp is provided on the spring sheet, a through slot is formed on the outer side of the first contact member, the spring sheet is located in the through slot, and the first contact member is installed in the first housing; The female connector includes a second shell and a second contact member, a button is provided on the outer side of the second shell, the button is inserted into the second shell, a first sealing ring is sleeved on the outer side of the button, the first sealing ring contacts the second shell, a plug-in slot is provided on the top of the second contact member, a second through hole is provided on the bottom of the plug-in slot, a second contact pin is installed in the second through hole, a limiting slot is provided on the outer side of the second contact member, the limiting slot penetrates into and communicates with the plug-in slot, a second sealing ring is sleeved on the outer side of the second contact member, and the second contact member is installed in the second shell; The top of the first contact piece is slidably inserted into the insertion slot, the first shell and the second shell both touch the second sealing ring, the convex card is inserted into the limiting slot, the button touches the convex card, and the first contact pin is electrically connected to the second contact pin.
2. A waterproof connector with a secure connection as claimed in claim 1, characterized in that: A contact sheet extends from the convex card, and a contact column is provided on the button, and the contact column contacts the contact sheet.
3. A waterproof connector with a secure connection as claimed in claim 2, characterized in that: There are two spring sheets on the clamping member, the spring sheets are located at the top of the clamping member, the two spring sheets are respectively close to two sides of the clamping member, there are two contact pillars, there are two limiting grooves, and there are two through grooves.
4. A waterproof connector with a secure connection as claimed in claim 3, characterized in that: The first contact piece is composed of a first upper shell and a first lower shell, the snap-on piece is located on the outside of the first upper shell, the through groove is located on the outside of the first upper shell, the first through hole penetrates the first upper shell and the first lower shell, a first limiting ring extends on the outside of the first contact pin, and the first limiting ring is fixed between the first upper shell and the first lower shell.
5. A waterproof connector with a secure connection as claimed in claim 4, characterized in that: Two symmetrical first clips are provided at the bottom of the first upper shell, two first positioning columns extend from the bottom of the first upper shell, first slots are provided on both sides of the first lower shell, a first positioning hole is provided on the top of the first lower shell, the first clip is inserted into the first slot, the first positioning column is slid into the first positioning hole, four first limit blocks extend from the outside of the first lower shell, and the first limit blocks touch the inner wall of the first shell.
6. A waterproof connector with a secure connection as claimed in claim 5, characterized in that: A first threaded insert is embedded in the outer side of the first lower shell, a first installation groove is opened on the outer side of the first outer shell, a first fixing piece and a third sealing ring are arranged on the outer side of the first outer shell, the first fixing piece passes through the third sealing ring, the first fixing piece penetrates into the first outer shell and is connected with the first threaded insert, and the outer side of the third sealing ring respectively contacts the inner wall of the first installation groove and the first fixing piece.
7. A waterproof connector with a secure connection as claimed in claim 4, characterized in that: The second contact piece is composed of a second upper shell and a second lower shell, the second sealing ring is sleeved on the outside of the second upper shell, the plug-in slot is located at the top of the second upper shell, the limit slot is located on the outside of the second upper shell, the second through hole passes through the second upper shell and the second lower shell, a second limit ring extends from the outside of the second contact pin, and the second limit ring is fixed between the second upper shell and the second lower shell.
8. A waterproof connector with a secure connection as claimed in claim 7, characterized in that: Two symmetrical second clips are provided at the bottom of the second upper shell, two second positioning columns extend from the bottom of the second upper shell, second clip grooves are provided on both sides of the second lower shell, a second positioning hole is provided on the top of the second lower shell, the second clip is inserted into the second clip groove, the second positioning column is slid into the second positioning hole, four second limit blocks extend from the outer side of the second lower shell, and the second limit blocks touch the inner wall of the second shell.
9. A waterproof connector with a secure connection as claimed in claim 8, characterized in that: A second threaded insert is embedded in the outer side of the second lower shell, a second installation groove is opened on the outer side of the second outer shell, a second fixing piece and a fourth sealing ring are arranged on the outer side of the second outer shell, the second fixing piece passes through the fourth sealing ring, the second fixing piece penetrates into the second outer shell and is connected with the second threaded insert, and the outer side of the fourth sealing ring respectively contacts the inner wall of the second installation groove and the second fixing piece.
10. A firmly connected waterproof connector according to any one of claims 6 or 9, characterized in that: An anti-foolproof groove is provided on the outer side of the first upper shell, and an anti-foolproof protrusion extends from the inner wall of the plug-in slot, and the anti-foolproof protrusion is inserted into the anti-foolproof groove.