Wiring terminal convenient for distinguishing connection of positive electrode and negative electrode

Abstract

The utility model discloses a wiring terminal convenient for distinguishing positive and negative electrode connection, which comprises a main body shell, an inner container seat plugged with a jack on the main body shell and diversion strips arranged on the inner container seat, two ends of each diversion strip are respectively provided with a crimping screw, the lower end of each crimping screw passes through a through hole on the diversion strip to be in threaded fit with the inner container seat, and the upper end of each crimping screw is in threaded fit with the inner container seat. The inner container seat is provided with a wedge-shaped clamping block, the wedge-shaped clamping block is matched with a clamping groove in the side wall of the inserting hole in a clamped mode, and when the inner container seat is reversely inserted into the inserting hole, the end face of the wedge-shaped clamping block abuts against the end face of the main body shell. According to the technical scheme, the wedge-shaped clamping block is arranged on the inner container base, the clamping groove is formed in the inserting hole of the main body shell, clamping connection between the inner container base and the main body shell is achieved through matching of the wedge-shaped clamping block and the clamping groove, the assembling efficiency of the wiring terminal can be improved, when the inner container base is reversely inserted into the inserting hole, the end face of the wedge-shaped clamping block abuts against the end face of the main body shell, and therefore the wiring terminal is assembled. Reverse insertion prevention reminding is achieved, reverse insertion assembly is prevented, rework is completely eradicated, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to wiring terminals, and in particular to a wiring terminal which is convenient for distinguishing between positive and negative pole connections. Background Art

[0002] With the rapid development of the new energy market, an increasing number of high-current terminal blocks are being used in various electrical connection products. Existing terminal blocks consist of a main body shell, an inner liner seat that is inserted into the main body shell and connected to it via screws, and a metal guide bar mounted on the inner liner seat. Because the exposed lengths of the guide bar on the inner liner seat are different at both ends, when the inner liner seat is inserted into the outer shell, one end must be inserted. During assembly, the terminal blocks are often inserted incorrectly due to employee negligence, resulting in rework and affecting assembly efficiency. Furthermore, many terminal blocks on the market do not distinguish between positive and negative poles, or the distinction is unclear, leading to incorrect wiring. Utility Model Content

[0003] In order to overcome the existing technical defects and solve at least one of the above-mentioned technical problems, the purpose of the present invention is to provide a connection terminal that is convenient for distinguishing between positive and negative poles to solve the above-mentioned technical problems.

[0004] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0005] According to one aspect of the present invention, a terminal block is designed to facilitate distinguishing between positive and negative pole connections, including: a main body shell, an inner liner seat plugged into a socket on the main body shell, and a guide bar arranged on the inner liner seat, each of the two ends of the guide bar is provided with a crimping screw, the lower end of the crimping screw passes through the through hole on the guide bar and engages with the inner liner seat thread, a wedge-shaped card block is provided on the inner liner seat, the wedge-shaped card block is engaged with the card groove on the side wall of the socket, and when the inner liner seat is reversely inserted into the socket, the end face of the wedge-shaped card block abuts against the end face of the main body shell.

[0006] By adopting the above technical solution, a wedge-shaped block is set on the inner liner seat, and a slot is set in the socket of the main body shell. The wedge-shaped block cooperates with the slot to realize the clamping connection between the inner liner seat and the main body shell. This can improve the assembly efficiency of the terminal block compared to the screw connection. In addition, when the inner liner seat is inserted into the socket in reverse, the end face of the wedge-shaped block abuts against the end face of the main body shell, serving as an anti-reverse insertion reminder, which can prevent reverse plug-in assembly, eliminate rework, and further improve the assembly efficiency of the terminal block.

[0007] In order to better solve the above technical defects, the present invention also has a better technical solution:

[0008] In some embodiments, two inner liner seats are provided and have different colors. A cross portion and a straight portion are provided at the right end of the main body shell. One of the two inner liner seats corresponds to the cross portion on the left and right, and the other corresponds to the straight portion on the left and right. This terminal block is used in equipment such as a power supply cabinet, a charging cabinet, or a control cabinet. During installation, the right end of the main body shell is inserted into the interior through the through hole on the power supply cabinet, the charging cabinet, or the control cabinet and fixed to the waterproof shell to achieve installation. The left end of the main body shell is on the outside. By providing a cross portion and a straight portion at the right end of the main body shell, it can be determined which of the right ends of the two guide bars is connected to the live wire and which is connected to the neutral wire. By setting the two inner liner seats to two colors, it is convenient to distinguish which of the left ends of the guide bars on the two inner liner seats is used to connect to the live wire and which is used to connect to the neutral wire, thereby avoiding reverse connection of the live and neutral wires.

[0009] In some embodiments, a limiting groove is provided at the right end of the main body shell. When the wedge-shaped block is engaged with the groove, the right end of the inner liner seat is placed in the limiting groove, and the limiting groove limits the rightward movement of the inner liner seat.

[0010] In some embodiments, the left and right ends of the main body housing are each provided with a partition separating the inner container seat from the guide bar. The ends of the partitions are provided with reserved spacer insertion slots. When the right ends of the two guide bars are connected to relatively long cable lugs, the reserved spacer insertion slots allow for the insertion of insulating spacers, preventing the two cable lugs from colliding or causing breakdown due to excessive current.

[0011] In some embodiments, the inner liner seat is sleeved with an inner liner sealing ring that is in sealing contact with the side wall of the socket, thereby achieving a sealing and waterproof effect.

[0012] In some embodiments, a main body sealing ring is sleeved on the right end of the main body shell.

[0013] In some embodiments, a glue injection groove is provided at the right end of the main body shell above the guide bar, and glue can be injected at the guide bar position through the glue injection groove to improve the sealing and waterproof effect.

[0014] In some embodiments, a sealing gasket is provided on the left side of the main body shell, and the sealing gasket can improve the waterproof effect of the installation position of the main body shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a connection terminal that facilitates distinguishing between positive and negative pole connections in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram showing the structure of the terminal block from another perspective to facilitate the distinction between the positive and negative connections;

[0017] Figure 3 To facilitate the distinction between the positive and negative connection terminals, a structural diagram from another perspective is provided;

[0018] Figure 4 A schematic diagram of the cross-sectional structure of the terminal block for easy distinction between positive and negative connections;

[0019] Figure 5 Exploded diagram of the terminal block to facilitate differentiation of positive and negative connections;

[0020] Figure 6 Schematic diagram of the structure of the main shell;

[0021] Figure 7 It is a structural diagram of the inner tank seat;

[0022] Reference numerals:

[0023] 1. Main body shell; 11. Insertion hole; 12. Card slot; 13. Limiting slot; 14. Partition; 141. Reserved spacer insertion slot; 15. Main body sealing ring; 16. Sealing gasket; 17. Glue injection slot; 2. Inner liner seat; 21. Wedge-shaped card block; 22. Inner liner sealing ring; 3. Guide strip; 4. Crimp screw. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, and fixing should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] refer to Figures 1 to 7As shown, the utility model provides a terminal block that is convenient for distinguishing between positive and negative pole connections, comprising: a main body shell 1, an inner liner seat 2 and a guide bar 3. The main body shell 1 and the inner liner seat 2 are both made of conventional insulating plastic materials. Two or three or more sockets 11 are provided on the main body shell 1. In this embodiment, the main body shell 1 is preferably provided with two sockets 11, and the inner side wall of the socket 11 is provided with a card slot 12. The right end of the main body shell 1 is provided with a limiting slot 13 connected to the socket 11. The number of inner liner seats 2 is consistent with the number of sockets 11. In this embodiment, two inner liner seats 2 are also provided, and the two inner liner seats 2 have different colors. The inner liner seat 2 on the front side is red, yellow, green or other colors, and the inner liner seat 2 on the rear side is blue, black or other colors. The right end of the main body shell 1 is provided with a cross portion and a straight portion. The cross portion is a cross-shaped groove or a cross-shaped protrusion, and the straight portion is It is a straight groove or a straight protrusion. In this embodiment, the cross part is preferably a cross groove, and the straight part is a straight groove. The inner liner seat 2 on the front side of the two inner liner seats 2 corresponds to the cross part on the left and right, and the inner liner seat 2 on the rear side corresponds to the straight part on the left and right. One or two or more wedge-shaped blocks 21 are provided on the top, front side or rear side of the inner liner seat 2. In this embodiment, two wedge-shaped blocks 21 are preferably provided on the top of the inner liner seat 2. The two inner liner seats 2 are plugged into the two sockets 11, and the wedge-shaped blocks 21 are engaged with the slots 12. The right end of the inner liner seat 2 is placed in the limiting groove 13, and the limiting groove 13 limits the inner liner seat 2 from moving right. When the left end of the inner liner seat 2 is inserted into the socket 11 in reverse, the end face of the wedge-shaped block 21 abuts against the end face of the main shell 1 to prevent the inner liner seat 21 from being plugged in, that is, the distance between the top of the wedge block 21 and the bottom of the inner liner seat 2 is greater than the vertical width of the socket 11.

[0028] The number of guide bars 3 is the same as the number of inner pot seats 2, and they are inserted into the inner pot seats 2 in a one-to-one correspondence. The guide bars 3 are made of metal, such as copper, aluminum, or aluminum alloy. In this embodiment, copper is preferred. Each guide bar 3 is provided with a crimping screw 4 at each end. The lower end of the crimping screw 4 passes through a through hole in the guide bar 3 and engages with the threaded nut fixed to the inner pot seat 2. A crimping ring is sleeved on the crimping screw 4. The crimping screws 4 at both ends of the front guide bar 3 are used to crimp the live wire, while the crimping screws 4 at both ends of the rear guide bar 3 are used to crimp the neutral wire.

[0029] Partitions 14 are provided at the left and right ends of the main body shell 1 to separate the inner container seat 2 and the guide bar 3 , and reserved spacer insertion grooves 141 are provided at the ends of the partitions 14 .

[0030] The inner liner seat 2 is sleeved with an inner liner sealing ring 22 that is in sealing contact with the side wall of the insertion hole 11, the right end of the main body shell 1 is sleeved with a main body sealing ring 15, a sealing gasket 16 is provided on the left side of the main body shell 1, and the right end of the main body shell 1 is provided with a glue injection groove 17 located above the guide bar 3.

[0031] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A terminal block that facilitates distinguishing between positive and negative connections, characterized in that: include: A main body shell, an inner liner seat plugged into the socket on the main body shell, and a guide bar arranged on the inner liner seat, each of the guide bars is provided with a compression screw at both ends, the lower end of the compression screw passes through the through hole on the guide bar and is threadedly engaged with the inner liner seat, a wedge-shaped block is provided on the inner liner seat, the wedge-shaped block is engaged with the slot on the side wall of the socket, and when the inner liner seat is reversely inserted into the socket, the end face of the wedge-shaped block abuts against the end face of the main body shell.

2. A terminal block for facilitating the distinction between positive and negative connections according to claim 1, characterized in that: There are two inner liner seats with different colors. The right end of the main body shell is provided with a cross portion and a straight portion. One of the two inner liner seats corresponds to the cross portion on the left and right, and the other corresponds to the straight portion on the left and right.

3. A terminal block for facilitating the distinction between positive and negative connections according to claim 1 or 2, characterized in that: A limiting groove is provided at the right end of the main body shell. When the wedge-shaped clamping block is matched with the clamping groove, the right end of the inner container seat is placed in the limiting groove, and the limiting groove limits the inner container seat from moving rightward.

4. A terminal block for facilitating the distinction between positive and negative connections according to claim 1 or 2, characterized in that: The left and right ends of the main body shell are respectively provided with partitions for separating the inner tank seat and the guide strip, and the ends of the partitions are provided with reserved partition inserting grooves.

5. The connection terminal for facilitating the distinction between positive and negative poles according to claim 1, characterized in that: The inner liner seat is sleeved with an inner liner sealing ring which is in sealing contact with the side wall of the insertion hole.

6. The connection terminal for facilitating the distinction between positive and negative pole connections according to claim 1, characterized in that: The right end of the main body shell is sleeved with a main body sealing ring.

7. The connection terminal for facilitating the distinction between positive and negative poles according to claim 1, characterized in that: The right end of the main body shell is provided with a glue injection groove located above the guide strip.

8. The connection terminal for facilitating the distinction between positive and negative poles according to claim 1, characterized in that: A sealing gasket is provided on the left side of the main body shell.

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