A spliceable terminal block

Abstract

This utility model discloses a modular terminal block, relating to the field of connectors. It includes a housing, with terminal blocks evenly spaced on the top of the housing. Each terminal block has a connector hole on its top for connecting wires. Symmetrical protrusions are mounted on the front and rear sides of the right end of the housing, and symmetrical grooves are formed on the front and rear sides of the left end. A locating pin is slidably connected through the top of the left end of the housing, its bottom engaging with a slot. Locking rods are symmetrically hinged to the front and rear of the housing, their ends inserting into a socket. This modular terminal block allows for quick assembly of adjacent terminal units through front and rear insertion, followed by bidirectional locking, further improving assembly stability and enabling accurate assembly without repeated adjustments. Furthermore, the connector holes can be sealed during subsequent use to prevent external environmental factors from affecting the wire connections.

Description

Technical Field

[0001] This utility model relates to the technical field of connectors, specifically to a splicable terminal block. Background Technology

[0002] Terminal blocks, as key electronic components for circuit connections, are widely used in various electrical equipment, control systems, and power transmission lines. From control cabinets in industrial automation production lines to wiring nodes in smart home systems, and signal switching modules in communication base stations, terminal blocks play an important role in stabilizing wire connections, distributing power, and transmitting signals. Existing terminal blocks are basically products with a fixed number of pins. Designing and manufacturing different molds is required for each terminal block with a different number of pins, which increases the design time and manufacturing cost of the molds, thereby increasing the production cost and reducing the production efficiency of terminal blocks.

[0003] To address the aforementioned deficiencies, existing technology (Chinese patent announcement number CN222483728U, announcement date 2025-02-14) provides a modular terminal block comprising multiple plastic units, each plastic unit being equipped with a terminal and a spring clip. The terminal is used to connect external wires, and the spring clip is used to clamp the external wires. Multiple plastic units can be assembled to form a modular terminal block. This modular terminal block has a simple structure; only a mold for producing one plastic unit needs to be designed and manufactured, and multiple plastic units can be arbitrarily assembled to form terminal blocks with different pin counts.

[0004] The above solution, in its use, simply combines components through a central column connection during the splicing process. The central column has a single function, only allowing for horizontal connections, while vertical alignment requires manual adjustment, resulting in low splicing efficiency and weak connection stability. Utility Model Content

[0005] The purpose of this utility model is to provide a splicable terminal block to solve the problems mentioned in the background art. In the process of splicing existing splicable terminal blocks, they are simply combined by connecting them with a central column. The central column has a single function and can only perform horizontal connection. The vertical alignment needs to be manually adjusted, resulting in low splicing efficiency and weak connection stability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular terminal block, comprising a housing, terminal blocks evenly spaced on the top of the housing, mounting feet provided on the bottom of the housing, insertion holes for connecting wires evenly spaced on the top of the terminal blocks, symmetrically mounted protrusions on the front and rear sides of the right end of the housing, and symmetrically opened grooves on the front and rear sides of the left end of the housing, with adjacent housings being assembled by inserting the protrusions and grooves;

[0007] A positioning pin is slidably connected through the top left end of the outer casing. The bottom of the positioning pin engages with a slot, which is correspondingly located on the top of the protrusion.

[0008] The outer shell is symmetrically hinged with locking rods at the front and back. The ends of the locking rods are inserted into slots. The slots are correspondingly opened on the front and back sides of adjacent outer shells. The locking rods and slots form a two-way locking structure.

[0009] Furthermore, both the protrusions and grooves are designed as rectangular structures, and the protrusions and grooves form a horizontal splicing structure.

[0010] Furthermore, the positioning pin is configured as a "T" shaped structure, with a right-angled trapezoidal structure at the bottom. The inclined side of the bottom of the positioning pin faces the protrusion side, and the bottom of the positioning pin is connected to the top of the groove.

[0011] Furthermore, a first spring is installed between the positioning pin and the top of the outer casing, and the positioning pin forms a vertical locking structure through a slot.

[0012] Furthermore, the locking rod is configured with a "U"-shaped structure, and a torsion spring is installed at the hinge point between the locking rod and the outer casing.

[0013] Furthermore, a notch is provided on the side wall of the outer casing, and a movable piece is slidably connected to the notch by a second spring.

[0014] Furthermore, an air reservoir is installed inside the recess, the movable piece is in pressure contact with the air reservoir, the air reservoir is connected to the sealing bladder through a connecting tube, the sealing bladder is located at the edge of the insertion hole opening, and the sealing bladder is configured as a rectangular structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This modular terminal block allows for quick assembly of adjacent terminal units via front and rear plug-in connections. After assembly, a bidirectional locking connection is established, further enhancing assembly stability and enabling accurate assembly without repeated adjustments. Additionally, the terminal block can be sealed at the sockets during subsequent use to prevent external environmental factors from affecting wire connections.

[0017] 1. Furthermore, the outer shell, terminal block, mounting feet, and socket constitute a terminal unit. When splicing the terminal block, the outer shell is initially connected and fixed by the insertion of the protrusion and the groove. Then, the positioning pin engages with the slot on the protrusion to vertically reinforce the connection and improve the stability after splicing. The locking rod on the adjacent outer shell is inserted into the socket to externally strengthen the fixation and make a two-way connection to improve the stability of the splicing.

[0018] 2. Furthermore, after the protrusion on the outer shell is inserted into the groove on the adjacent outer shell, the bottom of the positioning pin is squeezed and moves upward, and the first spring is stretched. When the protrusion is fully inserted into the groove, the bottom of the positioning pin will coincide with the slot on the top of the protrusion. The first spring will drive the positioning pin to move downward, thereby inserting it into the slot, thus vertically reinforcing the connected state. At the same time, the locking rod is rotated, thereby reversing the torsion spring. After the protrusion and the groove are connected, the locking rod is released, and the torsion spring will drive the locking rod to rotate back, thereby inserting it into the socket on the adjacent outer shell, thus locking the terminal units in both directions and improving the stability of the splicing.

[0019] 3. Furthermore, after the wire is connected to the socket, it will squeeze the movable piece in the side recess. After being compressed, the movable piece will retract into the recess, thereby compressing the second spring. The movable piece will also squeeze the air storage bag, and the gas in the air storage bag will be transported to the sealing bag through the connecting tube. After the sealing bag expands, it can seal the gap after the socket and the wire are connected, avoiding the influence of the external environment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model after assembly;

[0021] Figure 2 This is a schematic diagram of the overall detachable structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the splicing joint in the separated state of this utility model;

[0023] Figure 4 This is a schematic diagram of the exploded structure at the splicing point of this utility model;

[0024] Figure 5 This is a cross-sectional view of the terminal block structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the distribution structure of the air storage bladder and sealing bladder of this utility model.

[0026] In the diagram: 1. Outer shell; 2. Terminal block; 3. Mounting foot; 4. Socket; 5. Protrusion; 6. Groove; 7. Positioning pin; 8. First spring; 9. Slot; 10. Locking rod; 11. Torsion spring; 12. Insert; 13. Notch; 14. Movable piece; 15. Second spring; 16. Air reservoir; 17. Sealing bladder. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: Please refer to Figures 1-2 The present invention provides the following technical solution: a modular terminal block, comprising a housing 1, terminal blocks 2 are installed at equal intervals on the top of the housing 1, mounting feet 3 are provided on the bottom of the housing 1, and insertion holes 4 for connecting wires are opened at equal intervals on the top of the terminal blocks 2, protrusions 5 are symmetrically installed on the front and rear sides of the right end of the housing 1, and grooves 6 are symmetrically opened on the front and rear sides of the left end of the housing 1, adjacent housings 1 are assembled by inserting the protrusions 5 and the grooves 6, a positioning pin 7 is slidably connected through the top of the left end of the housing 1, the bottom of the positioning pin 7 engages with the slot 9, the slot 9 is correspondingly opened on the top of the protrusion 5, and locking rods 10 are symmetrically hinged on the front and rear of the housing 1, the end of the locking rod 10 is inserted into the socket 12, the socket 12 is correspondingly opened on the front and rear sides of adjacent housings 1, and the locking rod 10 and the socket 12 constitute a two-way locking structure.

[0029] During use, the outer shell 1, terminal block 2, mounting feet 3, and socket 4 constitute a terminal unit. The terminal block is assembled from multiple terminal units. When splicing the terminal block, the outer shell 1 is initially connected and fixed by inserting the protrusion 5 into the groove 6. Then, the positioning pin 7 engages with the slot 9 on the protrusion 5 to vertically reinforce the connection and improve the stability after splicing. The locking rod 10 on the adjacent outer shell 1 is inserted into the socket 12 to externally reinforce and fix it, and to perform bidirectional connection to improve the stability of splicing.

[0030] Example 2:

[0031] Based on Embodiment 1, a first spring 8, a slot 9, and a recess 12 are also disclosed. Please refer to [reference needed]. Figures 1-4As shown, its specific structure is as follows: both the protrusion 5 and the groove 6 are set as rectangular structures, and the protrusion 5 and the groove 6 form a horizontal splicing structure. The positioning pin 7 is set as a "T" shaped structure. The bottom of the positioning pin 7 is set as a right-angled trapezoidal structure. The bottom sloping side of the positioning pin 7 faces the protrusion 5. The bottom of the positioning pin 7 is connected through to the top of the groove 6. A first spring 8 is installed between the positioning pin 7 and the top of the outer shell 1. The positioning pin 7 forms a vertical locking structure through the slot 9. The locking rod 10 is set as a "U" shaped structure. A torsion spring 11 is installed at the hinge of the locking rod 10 and the outer shell 1.

[0032] During use, after the protrusion 5 on the outer shell 1 is inserted into the groove 6 on the adjacent outer shell 1, the bottom of the positioning pin 7 is squeezed and moves upward, and the first spring 8 is stretched. When the protrusion 5 is fully inserted into the groove 6, the bottom of the positioning pin 7 will coincide with the slot 9 on the top of the protrusion 5. The first spring 8 will drive the positioning pin 7 to move downward, thereby inserting it into the slot 9, thus vertically reinforcing the connected state. At the same time, the locking rod 10 is rotated, thereby reversing the torsion spring 11. After the protrusion 5 is connected to the groove 6, the locking rod 10 is released, and the torsion spring 11 will drive the locking rod 10 to rotate, thereby inserting it into the socket 12 on the adjacent outer shell 1, thereby locking the terminal units in both directions and improving the stability of the splicing.

[0033] Example 3:

[0034] Based on Embodiment 2, the movable piece 14, the air reservoir 16, and the sealing bladder 17 are also disclosed. Please refer to [reference needed]. Figures 5-6 As shown, its specific structure is as follows: A notch 13 is provided on the side wall of the outer shell 1. A movable piece 14 is slidably connected to the notch 13 through a second spring 15. An air storage bag 16 is installed inside the notch 13. The movable piece 14 is in contact with the air storage bag 16 by compression. The air storage bag 16 is connected to the sealing bag 17 through a connecting tube. The sealing bag 17 is located at the edge of the opening of the insertion hole 4 and is set as a rectangular structure.

[0035] During use, after the wire is connected to the socket 4, it will squeeze the movable piece 14 in the side recess 13. After being compressed, the movable piece 14 will retract into the recess 13, thereby compressing the second spring 15. The movable piece 14 will also squeeze the air storage bag 16. The gas in the air storage bag 16 will be transported to the sealing bag 17 through the connecting tube. After the sealing bag 17 expands, it can seal the gap after the socket 4 is connected to the wire, avoiding the influence of the external environment.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular terminal block, comprising a housing (1), wherein terminal blocks (2) are installed at equal intervals on the top of the housing (1), mounting feet (3) are provided on the bottom of the housing (1), and insertion holes (4) for connecting wires are opened at equal intervals on the top of the terminal blocks (2), protrusions (5) are symmetrically installed on the front and rear sides of the right end of the housing (1), and grooves (6) are symmetrically opened on the front and rear sides of the left end of the housing (1), and adjacent housings (1) are assembled by inserting the protrusions (5) and the grooves (6); Its features are: A positioning pin (7) is slidably connected through the top left end of the outer shell (1). The bottom of the positioning pin (7) engages with the slot (9). The slot (9) is correspondingly opened on the top of the protrusion (5). The outer shell (1) is symmetrically hinged with locking rods (10) at the front and back. The end of the locking rod (10) is inserted into the slot (12). The slot (12) is opened on the front and back sides of the adjacent outer shell (1). The locking rod (10) and the slot (12) constitute a two-way locking structure.

2. The modular terminal block according to claim 1, characterized in that: Both the protrusion (5) and the groove (6) are set as rectangular structures, and the protrusion (5) and the groove (6) form a horizontal splicing structure.

3. A modular terminal block according to claim 2, characterized in that: The positioning pin (7) is set as a "T" shaped structure. The bottom of the positioning pin (7) is set as a right-angled trapezoidal structure. The bottom sloping side of the positioning pin (7) faces the protrusion (5). The bottom of the positioning pin (7) is connected to the top of the groove (6).

4. A modular terminal block according to claim 3, characterized in that: A first spring (8) is installed between the positioning pin (7) and the top of the outer shell (1), and the positioning pin (7) forms a vertical locking structure through the slot (9).

5. A modular terminal block according to claim 4, characterized in that: The locking rod (10) is configured with a "U" shaped structure, and a torsion spring (11) is installed at the hinge of the locking rod (10) and the outer shell (1).

6. A modular terminal block according to claim 5, characterized in that: A notch (13) is provided on the side wall of the outer shell (1), and a movable piece (14) is slidably connected in the notch (13) by a second spring (15).

7. A modular terminal block according to claim 6, characterized in that: An air reservoir (16) is installed inside the recess (13). The movable piece (14) is in contact with the air reservoir (16) by compression. The air reservoir (16) is connected to the sealing bladder (17) through a connecting tube. The sealing bladder (17) is located at the edge of the opening of the insertion hole (4). The sealing bladder (17) is configured as a rectangular structure.

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