A connection structure of a power plug

Abstract

The utility model provides a kind of connecting structure of power supply connector belongs to power supply connector technical field.It solves the problem of poor waterproof effect of the connecting structure of existing power supply connector.The connecting structure of this power supply connector, power supply connector includes shell, the side of shell is connected with locking nut, and the side is equipped with the mounting hole that can be embedded with external wire, multiple copper pieces are equipped in shell, this connecting structure includes wire box, the outside wall of wire box is protruded to form plug-in part, plug-in part is equipped with plug-in slot, shell has copper piece cover on the upper end of plug-in part and the slot of plug-in slot is closed, copper piece cover can be connected with plug-in part, the slot bottom of plug-in slot is provided with copper needle corresponding to copper piece, copper piece is arranged in copper piece cover and the lower end of copper piece has multiple sockets.The connecting structure of this power supply connector can play certain waterproof dustproof effect, to achieve the purpose of double-layer dustproof waterproof.

Description

Technical Field

[0001] This utility model belongs to the field of power connector technology and relates to a connection structure for a power connector. Background Technology

[0002] Water pumps require an external power supply. For ease of wiring, a power connector is usually plugged into the water pump's junction box to supply power to other electronic components inside the junction box. However, since water pumps are often installed outdoors, it is necessary to ensure that the power connector is waterproof and dustproof.

[0003] Existing power connector connection structures, such as those in Chinese patent applications

[0004] [CN219534980U] discloses a waterproof female connector for motors, including a housing, a nut, and multiple metal terminals. The housing has a plastic body inside, and two symmetrically arranged screws are threaded inside the housing. The nut is fixedly connected to one end of the housing by the thread and is used to fix the wire. The multiple metal terminals are snapped into the inside of the plastic body. Multiple elastic support posts are provided on one side of the plastic body, and the top of the elastic support posts is provided with barbed locking points, which engage with the metal terminals.

[0005] The above structure consists of a plastic body with multiple metal terminals snapped into it. The connection to the external power cord is achieved using a waterproof ring and a nut for tightening. However, placing the metal terminals inside the plastic body results in a large overall size, making it inconvenient to install internal components. During installation, the metal terminals need to be plugged into external copper pins to provide power. However, existing plug-in methods, such as plugs and sockets, do not provide waterproofing, which can easily lead to power outages. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a connection structure for power connectors. The technical problem to be solved by this utility model is: how to solve the problem of poor waterproofing effect of existing power connector connection structures.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A connection structure for a power connector includes a housing, a locking nut connected to one side of the housing, and an installation hole for inserting external wires on the same side. The housing contains multiple copper components. The connection structure includes a junction box. The outer wall of the junction box protrudes to form a plug-in portion, which has a plug-in groove. The housing has a copper component sleeve that abuts against the upper end of the plug-in portion and closes the opening of the plug-in groove. The copper component sleeve can engage with the plug-in portion. Copper pins, corresponding to the copper components, are provided on the bottom of the plug-in groove. The copper components pass through the copper component sleeve, and their lower ends have multiple insertion ports. The outer wall of the middle portion of the copper component sleeve is recessed inward along its width to form a sealing groove. A sealing ring is provided in the sealing groove. When the copper component sleeve abuts against the upper end of the plug-in portion, the sealing ring on the copper component sleeve is located within the plug-in groove, causing the outer wall of the copper component sleeve to abut against the side wall of the plug-in groove, and the copper pins are inserted into the corresponding insertion ports of the copper components.

[0009] The power connector plugs into the junction box, ensuring dust and water resistance after insertion. External power cables pass through mounting holes in the housing, are secured with nuts, and electrically connect to copper components inside the housing. A protrusion on the outer wall of the junction box forms the connector portion, which has a groove. A sealing ring is fitted onto the sealing groove of the copper component. When the copper component abuts against the upper end of the connector portion, the sealing ring is positioned within the groove, creating a seal between the outer wall of the sealing ring and the groove wall. Copper pins at the bottom of the groove are inserted into the copper component's socket, achieving... For electrical connections, to improve the sealing effect, external moisture or dust can easily enter the insertion groove from the connection between the copper fitting and the insertion part. The sealing groove is formed by a recess along the width direction on the outer wall of the copper fitting, which not only positions the sealing ring but also improves the sealing effect. The insertion port of the copper fitting is located at the lower end, so the sealing ring and the groove wall of the insertion groove can prevent moisture or dust from entering the lower part of the insertion groove and affecting the insertion effect of the copper fitting and the copper pin. Furthermore, the abutment between the copper fitting and the insertion part can also play a certain role in waterproofing and dustproofing, thereby achieving the purpose of double-layer dustproofing and waterproofing.

[0010] In the connection structure of the power connector described above, the side wall of the connector slot has an annular and inwardly protruding sealing step, the outer side wall of the middle part of the copper sleeve has an annular abutting step, the sealing ring is located above the abutting step, and the abutting step abuts against the sealing step.

[0011] The addition of sealing steps and abutment steps increases the sealing path and further enhances the sealing effect on the copper parts and copper pin connections below the insertion slot.

[0012] In the connection structure of the power connector described above, the sealing ring includes multiple annular sealing strips that abut against the groove wall of the plug groove. The sealing strips are all arranged in parallel, and the multiple sealing strips are distributed along the length direction of the copper sleeve.

[0013] The shape and position of the sealing strip further enhance the labyrinth seal effect, increasing the sealing effect between the insertion part and the copper sleeve, and preventing external moisture or dust from affecting the insertion effect of the copper parts and copper pins.

[0014] In the connection structure of the power connector described above, the copper sleeve has a downwardly extending, elongated snap-fit ​​block, and a snap-fit ​​groove is formed on the snap-fit ​​block along its length direction. A limiting block is provided on the outer side wall of the plug part. When the copper pin sleeve abuts against the plug part, the limiting block is embedded in the snap-fit ​​groove.

[0015] When the copper pin sleeve engages with the connector, the engagement is achieved by a limiting block embedded in the engagement groove, which improves the stability of the engagement between the copper pin sleeve and the connector, thereby enhancing the connection and sealing effects.

[0016] In the connection structure of the power connector described above, the lower end of the snap-fit ​​block is inclined from bottom to top toward the plug-in portion.

[0017] The shape of the lower end of the snap-fit ​​block serves as a guide, allowing the copper sleeve to be quickly inserted into the connector and snapped into place, thus improving the efficiency of power connector installation.

[0018] In the connection structure of the power connector described above, the housing includes a connector and a copper sleeve connected to the connector by fasteners. The copper sleeve protrudes in the width direction to form an abutment ring, which abuts against the upper end of the connector. A sealing gasket is provided between the copper sleeve and the lower end of the connector.

[0019] To facilitate installation and disassembly, the connector and copper sleeve are designed as separate units. After installation, to ensure unobstructed wiring, the connection between the connector and the copper sleeve is exposed. By placing a sealing gasket between the abutment ring and the insertion part of the copper sleeve, the sealing gasket is pressed tightly when the abutment ring and the insertion part are connected by fasteners, thereby improving the sealing effect between the copper sleeve and the connector.

[0020] Compared with the prior art, the present invention has the following advantages: external moisture or dust can easily enter the insertion groove from the connection between the copper fitting and the insertion part. The sealing groove is formed by a recess along the width direction on the outer wall of the copper fitting, which not only positions the sealing ring but also improves the sealing effect. The insertion port of the copper fitting is located at the lower end, so the sealing ring and the groove wall of the insertion groove can prevent moisture or dust from entering the lower part of the insertion groove and affecting the insertion effect of the copper fitting and the copper pin. Furthermore, the copper fitting and the insertion part abut against each other, which can also play a certain role in waterproofing and dustproofing, thereby achieving the purpose of double-layer dustproofing and waterproofing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembled structure of this utility model.

[0022] Figure 2 This is a top view of the assembled utility model.

[0023] Figure 3 yes Figure 2 Sectional view of AA.

[0024] Figure 4 This is a structural schematic diagram of the power connector in this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the copper sleeve in this utility model.

[0026] In the diagram, 1 is the housing; 11 is the mounting hole; 12 is the copper sleeve; 12a is the sealing groove; 12b is the abutment step; 12c is the snap-fit ​​block; 12c 1 is the snap-fit ​​groove; 12d is the abutment ring; 13 is the connecting seat; 2 is the lock nut; 3 is the copper part; 31 is the socket; 4 is the junction box; 41 is the plug-in part; 41a is the plug-in groove; 41b is the sealing step; 41c is the limit block; 42 is the copper pin; 5 is the sealing ring; 51 is the sealing strip; 6 is the sealing gasket; and 7 is the fastener. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] like Figure 1 and Figure 3 As shown, the connection structure of this power connector includes a housing 1, a locking nut 2 connected to one side of the housing 1, and an installation hole 11 for inserting external wires on the same side. The housing 1 contains multiple copper parts 3, and the connection structure includes a square-shaped junction box 4.

[0029] Specifically, such as Figure 1-3As shown, the outer side wall of the junction box 4 protrudes to form a plug-in portion 41. A plug-in groove 41a is provided on the plug-in portion 41. The housing 1 has a copper sleeve 12 that abuts against the upper end of the plug-in portion 41 and closes the groove of the plug-in groove 41a. A copper pin 42 corresponding to the copper parts 3 is provided on the bottom of the groove of the plug-in groove 41a. The copper parts 3 are inserted into the copper sleeve 12 and the lower end of the copper parts 3 has multiple insertion ports 31. The outer side wall of the middle part of the copper sleeve 12 is recessed inward along the width direction to form a sealing groove 12a. A sealing ring 5 is provided in the sealing groove 12a. When the copper sleeve 12 abuts against the upper end of the plug-in portion 41, the sealing ring 5 on the copper sleeve 12 is located in the plug-in groove 41a, so that the outer side wall of the sealing ring 5 abuts against the side wall of the plug-in groove 41a, and the copper pin 42 is embedded in the corresponding insertion port 31 of the copper parts 3.

[0030] The power connector is plugged into the junction box 4, and the connection must be dustproof and waterproof. External power cables pass through one side of the housing 1, are locked to the housing 1 with a nut, and are electrically connected to the copper component 3 inside the housing 1. A plug-in portion 41 is formed by a protrusion on the outer wall of the junction box 4. The plug-in portion 41 has a plug-in groove 41a. A sealing ring 5 is fitted onto the sealing groove 12a of the copper component sleeve 12. When the copper component sleeve 12 on the housing 1 abuts against the upper end of the plug-in portion 41, the sealing ring 5 on the copper component sleeve 12 is located within the plug-in groove 41a, causing the outer wall of the sealing ring 5 to abut against the groove wall of the plug-in groove 41a and form a seal. The copper pins 42 located at the bottom of the plug-in groove 41a are inserted into the copper component 3. Electrical connection is achieved within the socket 31. To improve the sealing effect, external moisture or dust can easily enter the insertion groove 41a from the connection between the copper sleeve and the insertion part 41. The sealing groove 12a is formed by recessing along the width direction on the outer side wall of the copper sleeve 12, which not only positions the sealing ring 5 but also improves the sealing effect. Since the socket 31 of the copper part 3 is located at the lower end, the sealing ring 5 and the groove wall of the insertion groove 41a can prevent moisture or dust from entering the lower part of the insertion groove 41a and affecting the insertion effect of the copper part 3 and the copper needle 42. Furthermore, the copper sleeve 12 abuts against the insertion part 41, which also provides a certain degree of waterproof and dustproof effect, thereby achieving the purpose of double-layer dustproof and waterproof.

[0031] like Figure 3 and Figure 4 As shown, the side wall of the insertion groove 41a has an annular and inwardly protruding sealing step 41b, and the outer side wall of the middle part of the copper sleeve 12 has an annular abutment step 12b. The sealing ring 5 is located above the abutment step 12b, and the abutment step 12b abuts against the sealing step 41b. The sealing ring 5 includes a plurality of annular sealing strips 51 that abut against the groove wall of the insertion groove 41a. The sealing strips 51 are all arranged in parallel, and the plurality of sealing strips 51 are distributed along the length direction of the copper sleeve 12.

[0032] like Figure 4 and Figure 5As shown, the copper sleeve 12 has a downwardly extending, elongated snap-fit ​​block 12c. The snap-fit ​​block 12c has a snap-fit ​​groove 12c 1 along its length direction. The outer side wall of the insertion part 41 has a limiting block 41c. When the copper sleeve 12 abuts against the insertion part 41, the limiting block 41c is embedded in the snap-fit ​​groove 12c 1. The lower end of the snap-fit ​​block 12c is inclined from bottom to top toward the insertion part 41.

[0033] like Figure 3-5 As shown, the housing 1 includes a connecting seat 13 and the aforementioned copper sleeve 12 connected to the connecting seat 13 by fasteners 7. The copper sleeve 12 protrudes in the width direction to form an abutment ring 12d, which abuts against the upper end of the insertion part 41. A sealing gasket 6 is provided between the copper sleeve 12 and the lower end of the connecting seat 13.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connection structure for a power connector, the power connector comprising a housing (1), a locking nut (2) connected to one side of the housing (1), and an installation hole (11) for inserting external wires on that side, the housing (1) containing a plurality of copper parts (3), the connection structure including a junction box (4), characterized in that, The outer wall of the junction box (4) protrudes to form a plug-in part (41), and a plug-in groove (41a) is provided on the plug-in part (41). The housing (1) has a copper sleeve (12) that abuts against the upper end of the plug-in part (41) and closes the opening of the plug-in groove (41a). Copper pins (42) corresponding to copper parts (3) are provided on the bottom of the plug-in groove (41a). The copper parts (3) are inserted into the copper sleeve (12) and the lower end of the copper parts (3) has multiple plugs. The outer side wall of the middle part of the copper sleeve (12) is recessed inward along the width direction to form a sealing groove (12a). A sealing ring (5) is provided in the sealing groove (12a). When the copper sleeve (12) abuts against the upper end of the insertion part (41), the sealing ring (5) on the copper sleeve (12) is located in the insertion groove (41a) so that the outer side wall of the sealing ring (5) abuts against the side wall of the insertion groove (41a), and the copper needle (42) is embedded in the insertion port (31) of the corresponding copper part (3).

2. The connection structure of the power connector according to claim 1, characterized in that, The sidewall of the insertion groove (41a) has an annular and inwardly protruding sealing step (41b), and the outer sidewall of the middle part of the copper sleeve (12) has an annular abutment step (12b). The sealing ring (5) is located above the abutment step (12b), and the abutment step (12b) abuts against the sealing step (41b).

3. The connection structure of the power connector according to claim 1 or 2, characterized in that, The sealing ring (5) includes a plurality of annular sealing strips (51) that abut against the groove wall of the insertion groove (41a). The sealing strips (51) are arranged in parallel and the plurality of sealing strips (51) are distributed along the length direction of the copper sleeve (12).

4. The connection structure of the power connector according to claim 1 or 2, characterized in that, The copper sleeve (12) has a downwardly extending, elongated snap-fit ​​block (12c), and a snap-fit ​​groove (12c 1) is provided on the snap-fit ​​block (12c 1) along its length direction. The outer side wall of the insertion part (41) has a limiting block (41c). When the copper sleeve (12) abuts against the insertion part (41), the limiting block (41c) is embedded in the snap-fit ​​groove (12c 1).

5. The connection structure of the power connector according to claim 4, characterized in that, The lower end of the snap-fit ​​block (12c) is inclined from bottom to top toward the insertion part (41).

6. The connection structure of the power connector according to claim 1 or 2, characterized in that, The housing (1) includes a connecting seat (13) and the aforementioned copper sleeve (12) connected to the connecting seat (13) by fasteners (7). The copper sleeve (12) protrudes in the width direction to form an abutment ring (12d), which abuts against the upper end of the insertion part (41). A sealing gasket (6) is provided between the copper sleeve (12) and the lower end of the connecting seat (13).

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