An anti-overflow coupler with water inlet at the bottom

Abstract

An anti-overflow coupler with water inlet from the bottom, comprising a lower seat body. An intermediate insertion slot is provided on the lower seat body. A conductor is provided on the side of the intermediate insertion slot, and a water inlet pipe that can penetrate through the intermediate insertion slot up and down is elastically installed in the cavity of the slot. The intermediate insertion slot includes an upper narrow slot section and a lower wide slot section. An upper stop step is provided between the upper narrow slot section and the lower wide slot section. The conductor is arranged in the lower wide slot section. A waterproof platform that moves and lifts along with the water inlet pipe is provided at the upper part of the water inlet pipe. By elastically pressing the waterproof platform against the upper stop step, the upper narrow slot section and the lower wide slot section are sealed and separated. The structure of the present invention enables the waterproof platform to prevent water droplets from remaining on the upper stop step during the anti-overflow test or normal use of the lower seat of the coupler, facilitating the passing of the anti-overflow test. Moreover, the waterproof platform can separate the conductor from the salt water in the upper narrow slot section, increasing the creepage distance between the conductor and the top of the lower seat, making it more practical and safe.

Description

Technical Field

[0001] The present invention relates to the field of couplers, and specifically to an anti-overflow coupler with water inlet from the bottom. Background Art

[0002] At present, newly designed electrical couplers must pass the anti-overflow test (placing the base on a horizontal plane, pouring 30 mL of a solution containing 1% sodium chloride through a tube with an inner diameter of 8 mm and the lower end 200 mm higher than the connector onto the connector within 2 s. Then, after 2 s, the base undergoes an electrical strength test of 16.3, and the test voltage for reinforced insulation is 2500 V). Only after the test results meet the relevant national standards can they be produced and put on the market.

[0003] For the existing lower base of an electrical coupler, a drain groove is provided. The test solution can quickly drain through the drain groove of the base. However, due to the too long side wall of the drain groove, the solution is likely to adhere to the side wall and cannot be drained within the specified time, resulting in its failure to pass the anti-overflow test. Later, improvements were made. Steps are formed on the side wall of the drain groove, and the solution basically flows through the upper side wall of the drain groove. The distance of the side wall through which the solution flows is shortened, and it can be drained within the specified time and is more likely to pass the test. However, the presence of the steps makes it possible and easier for water droplets to be adsorbed at the corners of the steps. During the test, the water droplets at the corners of the steps will cause the base to short-circuit during the electrical strength test. Whether there are water droplets adsorbed at the corners of the steps greatly affects the test results. Moreover, even if the base passes the test, this structure still poses a safety hazard to users during use.

[0004] Therefore, further improvement is needed for the lower base of the coupler with water inlet from the bottom. Summary of the Invention

[0005] The purpose of the present invention is to solve the above existing problems and provide a simple and reasonable anti-overflow coupler with water inlet from the bottom, whose main function is to enable the lower base of the coupler to pass the anti-overflow test.

[0006] An anti-overflow coupler with water inlet from the bottom includes a lower base body. An intermediate insertion groove is provided on the lower base body. A conductor is provided on the side of the intermediate insertion groove. An inlet pipe that can penetrate the intermediate insertion groove up and down is elastically installed in the cavity of the groove. The intermediate insertion groove includes an upper narrow groove section and a lower wide groove section. An upper stop step is provided between the upper narrow groove section and the lower wide groove section. The conductor is arranged in the lower wide groove section. A waterproof platform that moves up and down with the inlet pipe is provided on the upper part of the inlet pipe. By elastically pressing the waterproof platform against the upper stop step, the upper narrow groove section and the lower wide groove section are sealed and separated.

[0007] The purpose of the present invention can also be solved by the following technical measures:

[0008] A water inlet pipe mounting seat is provided at the bottom of the middle insertion slot, and a through hole adapted for the up-and-down penetration of the water inlet pipe is provided on the water inlet pipe mounting seat.

[0009] The waterproof platform is integrally connected to the upper part of the water inlet pipe, or a supporting ring is provided on the upper part of the water inlet pipe, the waterproof platform is arranged above the supporting ring, a return spring is sleeved outside the water inlet pipe, and both ends of the return spring abut between the water inlet pipe mounting seat and the waterproof platform, or between the water inlet pipe mounting seat and the supporting ring.

[0010] The waterproof platform includes a skeleton ring and an elastic sealing ring. The elastic sealing ring is externally connected to the upper end face of the skeleton ring, or the elastic sealing ring and the skeleton ring are integrally formed by injection molding, and the elastic sealing ring presses against the upper stop step.

[0011] A recess is provided on the groove wall of the middle insertion slot. The conductor is a conductive sheet, the conductive sheet is arranged in the recess and the movable end elastically extends out of the middle insertion slot. An inclined surface for pushing the movable end of the conductive sheet into the recess when translating and descending is provided on the side wall of the waterproof platform.

[0012] A limiting groove is provided at the top of the recess, and the top end of the conductive sheet is limited and inserted into the limiting groove.

[0013] A through hole adapted for the up-and-down penetration of the water inlet pipe is provided on the water inlet pipe mounting seat. Guide notches are provided on the opposite sides of the hole edge of the through hole. Vertical guide ribs matched with the guide notches are provided on the side wall of the water inlet pipe, and an inverted buckle block buckling on the bottom surface of the water inlet pipe mounting seat extends from the lower part of the water inlet pipe.

[0014] The water inlet pipe mounting seat is an independent component and is installed at the bottom of the middle insertion slot through a connecting component; the lower seat body is injection-molded with an insertion wall defining the middle insertion slot, and an upper stop step is integrally formed on the insertion wall. The water inlet pipe and the waterproof platform are installed into the middle insertion slot from bottom to top.

[0015] The lower seat body is injection-molded with a water inlet pipe mounting seat and an insertion wall. A limiting ring is installed at the top of the insertion wall, and an upper stop step is formed at the bottom of the limiting ring. The water inlet pipe and the waterproof platform are installed into the middle insertion slot from top to bottom.

[0016] An upper seat body is further included. A metal conductive ring matched with the middle insertion slot is provided on the upper seat body. When the upper seat body and the lower seat body are coupled, the metal conductive ring presses against the waterproof platform to translate and descend and is electrically connected to the conductor.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1)An anti-overflow coupler with water supply from the bottom of the present invention. This structure enables the lower seat of the coupler to press against the upper stop step during the anti-overflow test or normal use, which can break the adsorption force of the upper stop step on water droplets, prevent water droplets from remaining at the corner position of the upper stop step, facilitate passing the anti-overflow test, and avoid short-circuit between the externally applied power supply and the conductor in the lower seat of the coupler.

[0019] (2)An anti-overflow coupler with water supply from the bottom of the present invention. This structure can separate the conductor from the salt water in the upper narrow slot section by the waterproof platform, avoid contact between the salt water and the conductor, increase the creepage distance between the conductor and the top of the lower seat body, and make it more practical and safe. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the sectional decomposition structure of the upper seat body and the lower seat body of the present invention.

[0021] Figure 2 is Figure 1 An enlarged schematic diagram of part A in

[0022] Figure 3 It is a schematic diagram of the partial decomposition structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the first installation scheme of the present invention.

[0024] Figure 5 It is a schematic diagram of the second installation scheme of the present invention. Detailed Embodiment

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] As Figures 1 to 3 shown, an anti-overflow coupler with water supply from the bottom includes a lower seat body 1. An intermediate insertion slot 2 is provided on the lower seat body 1. A conductor 3 is provided on the side of the intermediate insertion slot 2. And a water inlet pipe 4 that can penetrate the intermediate insertion slot 2 up and down is elastically installed in the cavity of the slot. The intermediate insertion slot 2 includes an upper narrow slot section 21 and a lower wide slot section 22. An upper stop step 23 is provided between the upper narrow slot section 21 and the lower wide slot section 22. The conductor 3 is provided in the lower wide slot section 22. A waterproof platform 5 that moves up and down with the water inlet pipe 4 is provided at the upper part of the water inlet pipe 4. By elastically pressing the waterproof platform 5 against the upper stop step 23, the upper narrow slot section 21 and the lower wide slot section 22 are sealed and separated; the waterproof platform 5 can separate the conductor 3 from the salt water in the upper narrow slot section 21, avoid contact between the salt water and the conductor 3, increase the creepage distance between the conductor 3 and the top of the lower seat body 1, and make it more practical and safe.

[0027] And during the anti-overflow water test or normal use of the coupler lower seat, the waterproof platform 5 presses against the upper stop step 23, which can break the adsorption force of the upper stop step 23 on water droplets, prevent water droplets from remaining at the corner position of the upper stop step 23, facilitate passing the anti-overflow water test, and avoid short-circuiting between the externally applied power supply and the conductor 3 inside the coupler lower seat.

[0028] Furthermore, a water inlet pipe mounting seat 6 is provided at the bottom of the middle insertion slot 2. A through hole 601 suitable for the up-and-down penetration of the water inlet pipe 4 is opened on the water inlet pipe mounting seat 6. The water inlet pipe mounting seat 6 is used to fix, position, and guide the water inlet pipe 4.

[0029] A guiding notch 602 is provided on the water inlet pipe mounting seat 6, and a vertical guiding rib 402 cooperating with the guiding notch 602 is provided on the side wall of the water inlet pipe 4. The cooperation between the vertical guiding rib 402 and the guiding notch 602 can ensure that the water inlet pipe 4 can be lifted and lowered vertically, thereby ensuring the translational movement of the waterproof platform 5 and preventing water from entering the lower wide slot section 22 to contact the conductor 3 due to the tilting of the waterproof platform 5 along with the water inlet pipe 4.

[0030] In addition, the top edge of the water inlet pipe mounting seat 6 can also form a lower stop step 24. During the use of this coupler, the lower stop step 24 serves as an insurance function in extreme cases. When the water inlet pipe 4 is pressed against by an external force to the limit, it can limit the descending range of the water inlet pipe 4, avoiding difficulties in resetting due to the too low position of the waterproof platform 5 or damage to the water inlet pipe 4 or the lower seat body.

[0031] Furthermore, a water inlet pipe mounting seat 6 is provided at the bottom of the middle insertion slot 2. The top edge of the water inlet pipe mounting seat 6 forms a lower stop step 24 cooperating with the waterproof platform 5. The water inlet pipe mounting seat 6 is used to fix, position, and guide the water inlet pipe 4, and forming the lower stop step 24 can limit the descending range of the water inlet pipe 4 when the water inlet pipe 4 is pressed against by foreign objects, avoiding difficulties in resetting due to the too low position of the waterproof platform 5 or damage to the water inlet pipe 4 or the lower seat body 1.

[0032] Furthermore, the waterproof platform 5 is integrally connected to the upper part of the water inlet pipe 4, or a supporting ring 401 is provided at the upper part of the water inlet pipe 4, the waterproof platform 5 is arranged above the supporting ring 401, and a return spring 7 is sleeved outside the water inlet pipe 4. The two ends of the return spring 7 are abutted between the water inlet pipe mounting seat 6 and the waterproof platform 5, or between the water inlet pipe mounting seat 6 and the supporting ring 401. Thus, the waterproof platform 5 can elastically press against the upper stop step 23.

[0033] Further explanation, the plinth 5 includes a skeleton ring 51 and an elastic sealing ring 52. The elastic sealing ring 52 is externally connected to the upper end face of the skeleton ring, or the elastic sealing ring 52 and the skeleton ring 51 are integrally formed by injection molding, and the elastic sealing ring 52 presses against the upper stop step; the skeleton ring 51 is provided with a plurality of water inlet through holes 511 along the circumferential direction, and a connecting ring 53 is arranged below the water inlet through holes 511. The connecting ring 53 and the elastic sealing ring 52 are both made of silica gel, and the connecting ring 53 and the elastic sealing ring 52 are integrally formed components through the water inlet through holes 511 during injection molding.

[0034] The plinth 5 is formed by the above structure, which can prevent problems such as the displacement of the elastic sealing ring 52, and is uniformly stressed and stretched on the upper end face of the skeleton ring 51.

[0035] Further explanation, the groove wall of the intermediate insertion slot 2 is provided with a recess 201. The conductor 3 is a conductive sheet, and the conductive sheet is arranged in the recess 201 and the movable end elastically extends out of the intermediate insertion slot 2. The side wall of the plinth 5 is provided with an inclined surface 501 that pushes the movable end of the conductive sheet outward and into the recess when moving downward and translating; when the coupler is coupled, the plinth 5 can push the conductive sheet away when moving downward and translating, so that it resets into the recess 201 without affecting the translational movement of the plinth 5. When the plinth 5 moves to below the conductive sheet, the extended movable end can ensure that the conductive sheet can contact the conductor structure of the upper seat body 8.

[0036] In addition, the fixed end of the conductive sheet is fixed to the bottom of the lower seat body 1 by screws or rivets, and a wiring terminal piece 31 extends outward from the fixed end to the outside of the conductive sheet for connecting conductive wires.

[0037] Further explanation, the top of the recess 201 is provided with a limit groove 202, and the top end of the conductive sheet is limited and inserted into the limit groove 202; due to the elasticity of the conductive sheet, the limit groove 202 can control the amplitude of the conductive sheet extending out of the intermediate insertion slot 2 to prevent the conductive sheet from being permanently deformed due to being pressed when the plinth 5 descends.

[0038] Further explanation, the lower part of the water inlet pipe 4 extends with an inverted buckle block 403 that is buckled on the bottom surface of the water inlet pipe mounting seat 6; the water inlet pipe mounting seat 6 is provided with an elastically deformable side wall 603 for mounting and cooperating with the inverted buckle block 403. When the water inlet pipe 4 is installed on the water inlet pipe mounting seat 6, since the water inlet pipe 4 and the through hole form a clearance fit, when the inverted buckle block 403 passes through the through hole 601, it is necessary to push open the elastically deformable side wall 603 to increase the diameter of the through hole 601 so that the inverted buckle block 403 can pass through.

[0039] The water inlet pipe mounting seat 6 is provided with a through hole 601 adapted for the vertical penetration of the water inlet pipe 4. Guide notches 602 are formed on the opposite sides of the edge of the through hole 601. A vertical guide rib 402 cooperating with the guide notch 602 is arranged on the side wall of the water inlet pipe 4, and an inverted buckle 403 buckling on the bottom surface of the water inlet pipe mounting seat 6 extends from the lower part of the water inlet pipe 4. The cooperation between the vertical guide rib 402 and the guide notch 602 can ensure that the water inlet pipe 4 can vertically lift and lower, thereby ensuring the translational movement of the waterproof platform 5 and preventing water from entering the lower wide groove section 22 to contact the conductor 3 due to the tilting of the waterproof platform 5 along with the water inlet pipe 4.

[0040] Furthermore, in the present invention, the lower seat body 1 has at least the following two installation schemes:

[0041] Scheme 1: As Figure 4 shown, the water inlet pipe mounting seat 6 is an independent component and is installed at the bottom of the middle insertion slot 2 through a connection component; the lower seat body 1 is integrally formed by injection molding with an insertion wall 11 defining the middle insertion slot 2, and an upper stop step 23 is integrally formed on the insertion wall 11. The water inlet pipe 4 and the waterproof platform 5 are installed into the middle insertion slot 2 from bottom to top;

[0042] Specifically, the waterproof platform 5 is installed on the water inlet pipe 4, then the water inlet pipe 4 is inserted from the bottom of the middle insertion slot 2 and the return spring 7 is sleeved outside the water inlet pipe 4. Finally, the water inlet pipe mounting seat 6 is installed at the bottom of the lower seat body 1, thereby fixing the water inlet pipe 4 and the waterproof platform 5.

[0043] In the above scheme, the connection component preferably uses a fastening unit, such as screws, bolts or rivets, and can also be a snap connection structure or an internal and external thread part structure.

[0044] Scheme 2: As Figure 5 shown, the lower seat body 1 is integrally formed by injection molding with a water inlet pipe mounting seat 6 and an insertion wall 11. The insertion wall 11 defines a lower wide groove section 22. A limiting ring 12 is installed at the top of the insertion wall 11, and the limiting ring 12 defines an upper narrow groove section 21. An upper stop step 23 is formed at the bottom of the limiting ring 12. The water inlet pipe 4 and the waterproof platform 5 are installed into the middle insertion slot 2 from top to bottom.

[0045] Specifically, the waterproof platform 5 is installed on the water inlet pipe 4 and the return spring 7 is sleeved outside the water inlet pipe 4. Then the water inlet pipe 4 is inserted into the middle insertion slot 2 from the top of the middle insertion slot 2 to cooperate with the integrally formed water inlet pipe mounting seat 6. Finally, the limiting ring 12 is fixed at the top of the insertion wall 11 by means of adhesion or laser welding, etc. The positions of the waterproof platform 5 and the water inlet pipe 4 are restricted by the upper stop step 23 formed at the bottom of the limiting ring 12.

[0046] Furthermore, referring to Figure 1, further comprising an upper seat body 8, which is used in combination with the lower seat body 1. A metal conductive ring 81 matching with the middle insertion slot 2 is arranged on the upper seat body 8. When the upper seat body 8 is coupled with the lower seat body 1, the metal conductive ring 81 presses against the waterproof platform 5 and moves downward in translation and is electrically connected to the conductor 3; the metal conductive ring 81 can evenly apply force on the waterproof platform 5 so that it can move downward in translation, and the hollow part of the metal conductive ring 81 can avoid the middle water inlet pipe 4.

[0047] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An anti-overflow coupler with water inlet from the bottom, comprising a lower seat body, wherein an intermediate insertion slot is arranged on the lower seat body, a conductor is arranged on the side of the intermediate insertion slot, and a water inlet pipe that can penetrate through the intermediate insertion slot up and down is elastically installed in the cavity of the slot, and is characterized in that: The middle insertion slot includes an upper narrow slot section and a lower wide slot section. An upper stop step is provided between the upper narrow slot section and the lower wide slot section. The conductor is arranged in the lower wide slot section. An upper part of the water inlet pipe is provided with a waterproof platform that moves up and down with the water inlet pipe. By elastically pressing the waterproof platform against the upper stop step, the upper narrow slot section and the lower wide slot section are hermetically separated; A water inlet pipe mounting seat is arranged at the bottom of the middle insertion slot. A through hole suitable for the water inlet pipe to pass through up and down is formed in the water inlet pipe mounting seat; The waterproof platform includes a skeleton ring and an elastic sealing ring. The elastic sealing ring is externally connected to the upper end face of the skeleton ring. Alternatively, the elastic sealing ring and the skeleton ring are integrally formed by injection molding, and the elastic sealing ring presses against the upper stop step.

2. The anti-overflow coupler with bottom water inlet according to claim 1, wherein: The waterproof platform is integrally connected to the upper part of the water inlet pipe. Alternatively, a supporting ring is arranged at the upper part of the water inlet pipe, the waterproof platform is arranged above the supporting ring, and a return spring is sleeved outside the water inlet pipe. Two ends of the return spring abut between the water inlet pipe mounting seat and the waterproof platform, or between the water inlet pipe mounting seat and the supporting ring.

3. The anti-overflow coupler with water inlet at the bottom according to claim 1, characterized in that: A recess is arranged on the slot wall of the middle insertion slot. The conductor is a conductive sheet. The conductive sheet is arranged in the recess and the movable end elastically extends into the middle insertion slot. A slope is arranged on the side wall of the waterproof platform to push the movable end of the conductive sheet into the recess when moving downward and translating.

4. The anti-overflow coupler with bottom water supply according to claim 3, characterized in that: A limiting groove is arranged at the top of the recess. The top end of the conductive sheet is limited and inserted into the limiting groove.

5. The anti-overflow coupler with bottom water supply according to claim 1, characterized in that: A buckling block that buckles on the bottom surface of the water inlet pipe mounting seat extends from the lower part of the water inlet pipe; an elastically deformable side wall for mounting and cooperating with the buckling block is arranged on the water inlet pipe mounting seat.

6. The anti-overflow coupler with bottom water supply according to claim 1, characterized in that: The water inlet pipe mounting seat is an independent component and is installed at the bottom of the middle insertion slot through a connecting component; the lower seat body is injection-molded with an insertion wall that defines the middle insertion slot, and the upper stop step is integrally formed on the insertion wall. The water inlet pipe and the waterproof platform are installed into the middle insertion slot from bottom to top.

7. The anti-overflow coupler with water inlet at the bottom according to claim 1, characterized in that: The lower seat body is injection-molded with a water inlet pipe mounting seat and an insertion wall. A limiting ring is installed at the top of the insertion wall. The upper stop step is formed at the bottom of the limiting ring. The water inlet pipe and the waterproof platform are installed into the middle insertion slot from top to bottom.

8. The anti-overflow coupler with bottom water inlet according to claim 1, characterized in that: It further includes an upper seat body. A metal conductive ring that cooperates with the middle insertion slot is arranged on the upper seat body. When the upper seat body and the lower seat body are coupled, the metal conductive ring presses the waterproof platform to move downward and is electrically connected to the conductor.

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