Expanded wiring terminal

Abstract

The invention provides an expansion type wiring terminal, which comprises a connecting plate, a plurality of connecting terminals and a plurality of connecting terminals, the connecting shell is connected with the connecting plate, and a cavity and an opening part communicated with the cavity are formed in the connecting shell; the clamping piece comprises a clamping head and a connecting column, the clamping head is located in the cavity, the connecting column is connected with the clamping head and penetrates out of the connecting shell, a clamping interval is formed between the clamping head and the inner wall of the cavity, and the clamping head is driven by the connecting column to move so as to adjust the size of the clamping interval. According to the technical scheme, the problem that the wiring terminal cannot be repeatedly used after being expanded in the prior art is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of wiring terminals, and in particular to an extended wiring terminal. Background Art

[0002] At present, the terminal block adopts a connection shell and a connection plate for fixed connection. The connection shell has a cavity for plugging in the wires. The end of the connection shell has an opening, which is connected to the cavity. The end of the connection shell has a clamping piece for fixing the wires. The clamping piece is located in the cavity. The clamping piece is fixedly connected to the end of the connection shell, and the end of the connection shell is connected to the connection plate.

[0003] In the related art, for the expansion method of low-voltage terminals: first remove the fixing bolts of the original terminals, re-install the terminals to be expanded and the original terminals after re-using a bolt, and fix them on the terminals of the low-voltage equipment, so as to achieve the purpose of expansion. The above scheme has the following disadvantages: 1. The operation time is long and the original terminals of the low-voltage equipment need to be removed, and the original terminals and the expanded terminals need to be re-installed. 2. The expanded terminals need to match the original terminals, otherwise poor contact will occur. 3. The expanded terminals need to match the bolts of the low-voltage equipment, otherwise they cannot be installed. 4. Conventional expansion of low-voltage equipment can only install 2 terminals, and multiple terminals cannot be expanded and installed. 5. Conventional terminals need to use crimping pliers to crimp the terminals before installation. The terminals cannot be reused after crimping, and the flexibility is poor. Summary of the invention

[0004] The main purpose of the present invention is to provide an expandable wiring terminal to solve the problem in the related art that the wiring terminal cannot be reused after being expanded.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an expandable terminal block, comprising: a connecting plate, on which a connecting hole is arranged; a connecting shell, connected to the connecting plate, on which a cavity and an opening connected to the cavity are arranged; a clamping member, the clamping member comprising a clamping head and a connecting column, the clamping head is located in the cavity, the connecting column is connected to the clamping head and passes through the connecting shell, a clamping gap is formed between the clamping head and the inner wall of the cavity, and the clamping head moves under the drive of the connecting column to adjust the size of the clamping gap.

[0006] Furthermore, the connecting shell includes a top plate, a bottom plate and a side plate connected between the top plate and the bottom plate, and the connecting column is located on the top plate; the upper surface of the top plate is a first matching plane, and the upper surface of the bottom plate is a second matching plane.

[0007] Further, the opening is located at an end of the connecting shell away from the connecting plate.

[0008] Furthermore, an avoidance slope is provided at the end of the connecting shell facing the connecting plate.

[0009] Further, the clamping head has a concave portion on one side away from the connecting column.

[0010] Further, the inner concave portion includes a first inclined surface and a second inclined surface.

[0011] Furthermore, the width a of the clamping head and the width b of the opening satisfy: 0.7≤a / b<1.

[0012] Furthermore, a bearing member is provided between the connecting column and the clamping head.

[0013] Furthermore, the extended terminal block also includes a nut, a threaded structure is provided on the connecting column, a threaded hole is provided on the connecting shell, the threaded structure is threadedly matched with the threaded hole, the nut is connected to the threaded structure, and when the nut rotates, the connecting column moves toward one end of the clamping head.

[0014] Furthermore, there are multiple clamping members, and the multiple clamping members are arranged at intervals along the length direction of the connecting shell.

[0015] By applying the technical solution of the present invention, a connecting hole is provided on the connecting plate. The connecting shell is connected to the connecting plate, and a cavity and an opening connected to the cavity are provided on the connecting shell. The clamping member includes a clamping head and a connecting column, the clamping head is located inside the cavity, and the connecting column is connected to the clamping head and passes through the connecting shell. A clamping interval is formed between the clamping head and the inner wall of the cavity, and the size of the clamping interval can be adjusted when the clamping head moves under the drive of the connecting column. Through the above-mentioned arrangement, the connecting hole can be connected to the low-voltage equipment, and the position of the connecting plate is relatively stable, the external wire can be inserted into the cavity through the opening, and the clamping head can be driven to move by the connecting column, so that the external wire is clamped between the clamping head and the inner wall of the cavity, so that the position of the external wire is more stable, and because the size of the clamping interval can be adjusted, it can adapt to external wires of different diameters, thereby improving the versatility and flexibility of the extended terminal block. The structural design of the connection shell ensures the stability and durability of the expansion terminal, further improving the wiring efficiency and quality. At the same time, the connection column can be connected to other expansion terminals, thereby realizing the expansion of the terminal. The above structure can make the expansion of the terminal easier and can be reused, thereby saving costs. Therefore, the technical solution of the present application effectively solves the problem in the related art that the terminal cannot be reused after expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of an extended connection terminal according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A cross-sectional schematic diagram of an extended terminal block;

[0019] Figure 3 Shows Figure 1 A top view of an extended terminal block;

[0020] Figure 4 Shows Figure 1 A schematic side view of an extended terminal block;

[0021] Figure 5 Shows Figure 1 A schematic diagram of a three-dimensional structure of a plurality of extended wiring terminals connected;

[0022] Figure 6 Shows Figure 5 A schematic side view of the connection of multiple expansion terminals.

[0023] The above drawings include the following reference numerals:

[0024] 10. Connecting plate; 11. Connecting hole;

[0025] 20. Connecting shell; 21. Cavity; 22. Opening; 23. Top plate; 24. Bottom plate; 25. Side plate; 26. Avoidance slope;

[0026] 30. Clamping member; 31. Clamping head; 311. Inner recess; 3111. First inclined surface; 3112. Second inclined surface; 32. Connecting column; 33. Bearing member;

[0027] 40. Clamping distance; 50. Nut. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0031] like Figures 1 to 4 As shown, in this embodiment, the extended terminal comprises: a connection plate 10, a connection shell 20 and a clamping member 30. The connection plate 10 is provided with a connection hole 11. The connection shell 20 is connected to the connection plate 10, and the connection shell 20 is provided with a cavity 21 and an opening 22 connected to the cavity 21. The clamping member 30 comprises a clamping head 31 and a connecting column 32, the clamping head 31 is located in the cavity 21, the connecting column 32 is connected to the clamping head 31 and passes through the connection shell 20, and a clamping interval 40 is formed between the clamping head 31 and the inner wall of the cavity 21, and the clamping head 31 moves under the drive of the connecting column 32 to adjust the size of the clamping interval 40.

[0032] According to the technical solution of the present invention, a connection hole 11 is provided on the connection plate 10. A connection shell 20 is connected to the connection plate 10, and a cavity 21 and an opening 22 communicating with the cavity 21 are provided on the connection shell 20. The clamping member 30 includes a clamping head 31 and a connecting column 32, wherein the clamping head 31 is located inside the cavity 21, and the connecting column 32 is connected to the clamping head 31 and passes through the connection shell 20. A clamping interval 40 is formed between the clamping head 31 and the inner wall of the cavity 21, and the clamping head 31 can adjust the size of the clamping interval 40 when it moves under the drive of the connecting column 32. Through the above-mentioned arrangement, the connection hole 11 can be connected to the low-voltage equipment, and the position of the connection plate 10 is relatively stable. The external wire can be inserted into the cavity 21 through the opening 22, and the clamping head 31 can be driven to move through the connecting column 32, so that the external wire is clamped between the clamping head 31 and the inner wall of the cavity 21, so that the position of the external wire is more stable, and since the size of the clamping interval 40 can be adjusted, it can adapt to external wires of different diameters, thereby improving the versatility and flexibility of the extended terminal block. Through the structural design of the connecting shell 20, the stability and durability of the extended terminal block are guaranteed, and the wiring efficiency and quality are further improved. At the same time, the connecting column 32 can be connected to other extended terminal blocks, thereby realizing the expansion of the terminal block. The above-mentioned structure can make the expansion of the terminal block easier, and can be reused, thereby saving costs. Therefore, the technical solution of the present application effectively solves the problem that the terminal block cannot be reused after expansion in the related art.

[0033] Specifically, this design enables the expansion terminal block to be flexibly adjusted to accommodate wires of different diameters, which can significantly improve the efficiency and quality of wiring, especially in industrial automation, power engineering and building electrical installation. Through this design, the scope of application of the expansion terminal block is greatly expanded and is no longer limited to wires of a specific diameter, thereby reducing inventory and procurement costs, while also providing great convenience for on-site installation work and improving the flexibility and response speed of the project.

[0034] like Figures 1 to 4As shown, in this embodiment, the connecting shell 20 includes a top plate 23, a bottom plate 24 and a side plate 25 connected between the top plate 23 and the bottom plate 24, and the connecting column 32 is located on the top plate 23; the upper surface of the top plate 23 is a first mating plane, and the upper surface of the bottom plate 24 is a second mating plane. Such a structural design not only ensures the stability of the extended terminal block, but also facilitates precise alignment during installation and maintenance, especially in electrical cabinets with narrow space, which can effectively improve the convenience of operation. Due to the presence of the top plate 23 and the bottom plate 24, the extended terminal block can still maintain the stability of its geometric shape and position when subjected to external shock or vibration, which is crucial to ensuring long-term electrical connection reliability. In industrial sites, especially in automated production lines, this stability can prevent loose wiring, reduce failure rates, and improve production efficiency.

[0035] Specifically, the upper surface of the top plate 23 is the first mating plane, which makes the expansion connection more stable. Secondly, under the action of the second mating plane, the clamping head 31 can better clamp the external wire. At the same time, under the action of the side plate 25, the position of the clamping head 31 can be more stable.

[0036] like Figures 1 to 4 As shown, in this embodiment, the opening 22 is located at the end of the connection shell 20 away from the connection plate 10. This design ensures that the external wire can be smoothly inserted or removed, reduces resistance during operation, and is suitable for scenarios where the external wire is frequently replaced, such as the construction and commissioning of temporary power facilities. Providing the opening 22 at the end away from the connection plate 10 also facilitates observation and confirmation of whether the external wire is correctly inserted into place, which is particularly important for commissioning and maintenance work, and can avoid electrical failures caused by improper connection, thereby improving safety and work efficiency.

[0037] Specifically, in this embodiment, the connection shell 20 is rectangular, the opening 22 is rectangular, and the cross-section of the cavity 21 is rectangular.

[0038] Preferably, the size of the opening 22 is smaller than the size of the cross section of the cavity 21 , so as to prevent other substances from entering the cavity 21 through the opening 22 and thus affecting the movement of the clamping head 31 .

[0039] like Figures 1 to 3 As shown, in this embodiment, the end of the connection shell 20 facing the connection plate 10 is provided with an avoidance slope 26. The design of the avoidance slope 26 can avoid the nut, thereby making the connection stability of the expansion terminal better.

[0040] like Figures 1 to 6As shown, in this embodiment, the clamping head 31 has an inner recess 311 on one side away from the connecting column 32. The setting of the inner recess 311 increases the contact area between the clamping head 31 and the external wire, improves the fixing effect of the external wire, ensures the reliability of the electrical connection, and can effectively prevent the external wire from loosening, especially in a high-vibration industrial environment.

[0041] Of course, the design of the inner recess 311 can also be adaptively adjusted according to the outer diameter shape of the external wire, and a good clamping effect can be maintained even when the outer diameter of the external wire changes slightly. This is of great significance for ensuring the stability and safety of electrical connections in harsh environments on industrial sites.

[0042] like Figures 1 to 6 As shown, in this embodiment, the inner concave portion 311 includes a first inclined surface 3111 and a second inclined surface 3112. The design of the first inclined surface 3111 and the second inclined surface 3112 enables the clamping head 31 to produce a better wedge effect when clamping the external wire, further enhancing the fixation of the external wire, and is suitable for occasions requiring high current transmission, such as the connection of power trunk lines. The wedge effect ensures that when high current is transmitted, the contact resistance between the external wire and the clamping head 31 is minimized, thereby improving the efficiency and stability of current transmission and reducing energy loss, which is particularly important for the connection of power trunk lines and can significantly improve the overall performance of the power system.

[0043] Specifically, the included angle between the first inclined surface 3111 and the second inclined surface 3112 is between 100° and 150°, so as to avoid excessive clamping of the external wires and thus avoid damaging the external wires.

[0044] Specifically, in this embodiment, the angle between the first inclined surface 3111 and the second inclined surface 3112 is 120°. Such a configuration enables the clamping head 31 to clamp the external wire.

[0045] In an embodiment not shown in the figure, a plurality of first grooves are arranged on the first inclined surface 3111, and the plurality of first grooves are arranged at intervals. A plurality of second grooves are arranged on the second inclined surface 3112, and the plurality of second grooves are arranged at intervals. The conduction directions of the plurality of first grooves are the same, and the conduction directions of the plurality of second grooves are the same. There is an angle between the conduction directions of the first grooves and the conduction directions of the second grooves, and the angle of the angle is between 30° and 90°.

[0046] like Figures 1 to 6 As shown, in this embodiment, the width a of the clamping head 31 and the width b of the opening 22 satisfy: 0.7≤a / b<1. Such a proportional relationship ensures that the clamping head 31 does not rotate and does not affect the movement of the clamping head 31.

[0047] Specifically, in this embodiment, a / b = 0.85. Such a ratio can not only effectively fix the external wiring, but also limit the moving direction of the clamping head 31, thereby making the moving direction of the clamping head 31 more stable.

[0048] like Figures 1 to 6 As shown, in this embodiment, a bearing member 33 is provided between the connecting column 32 and the clamping head 31. The addition of the bearing member 33 makes the connecting column 32 drive the clamping head 31 to move more smoothly, reduces friction, and prolongs the service life of the extended terminal block, which is particularly suitable for occasions that require frequent operations, such as equipment wiring on a production line. The use of bearings can also reduce noise during operation and improve the comfort of operation. For production lines that require continuous operation, this not only improves operating efficiency, but also optimizes the working environment and improves employee job satisfaction.

[0049] At the same time, the arrangement of the bearing member 33 can prevent the clamping head 31 from rotating when the connecting column 32 rotates.

[0050] like Figures 1 to 6 As shown, in this embodiment, the expansion terminal further includes a nut 50, a threaded structure is provided on the connection column 32, a threaded hole is provided on the connection shell 20, the threaded structure is threadedly matched with the threaded hole, the nut 50 is connected to the threaded structure, and when the nut 50 rotates, the connection column 32 moves toward one end of the clamping head 31. This thread-driven clamping method is simple to operate and accurate in adjustment, and is suitable for occasions where the clamping force of the wire needs to be accurately controlled, such as wiring of precision electronic equipment.

[0051] The precision of thread drive enables the terminal blocks to adapt to the special needs of wire connection in precision electronic equipment, ensuring the stable transmission of electrical signals, which plays an important role in improving the performance and stability of the equipment. It also reduces the failure rate caused by unstable signals and improves product reliability and user satisfaction.

[0052] like Figures 1 to 6 As shown, in this embodiment, there are multiple clamping members 30, and the multiple clamping members 30 are arranged at intervals along the length direction of the connection shell 20. The arrangement of multiple clamping members 30 enables the extended wiring terminal to have better connection stability and greatly improve the connection strength, which is suitable for wiring work of large-scale electrical engineering, such as the construction and maintenance of urban power grids.

[0053] Specifically, the design of multiple clamping members 30 can also improve the heat dissipation performance of the terminal block, avoiding overheating problems caused by dense wires when high current is transmitted, which is of great significance for ensuring the safety and stability of electrical engineering.

[0054] like Figures 1 to 6As shown, in this embodiment, the extended terminal block can effectively adjust the size of the clamping interval 40 through the designed clamping member 30, so as to adapt to external wires of different diameters, thereby improving the versatility and flexibility of the extended terminal block. At the same time, the structural design of the connecting shell 20 ensures the stability and durability of the extended terminal block, further improving the wiring efficiency and quality. In addition, the provision of multiple clamping members 30 enables the extended terminal block to connect multiple external wires at the same time, greatly improving the work efficiency and bringing great convenience to the wiring work of electrical engineering.

[0055] Specifically, in practical applications, this extended terminal block can not only adapt to external wiring of various specifications, but also withstand the harsh environment of high current and high vibration. It has broad application prospects and significant practical value in many fields such as industrial automation, power engineering, building electrical installation, temporary power facility construction, large data room wiring, internal wiring of household appliances, production line equipment wiring, precision electronic equipment wiring, and urban power grid construction and maintenance. Its unique design and excellent performance not only simplify the wiring process and improve work efficiency, but also effectively reduce engineering costs and reduce maintenance times, thereby saving users a lot of time and resources. It is an indispensable and important component in modern electrical engineering.

[0056] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An extended terminal block, characterized in that: include: A connecting plate (10), wherein the connecting plate (10) is provided with a connecting hole (11); A connecting shell (20) connected to the connecting plate (10), wherein the connecting shell (20) is provided with a cavity (21) and an opening (22) communicating with the cavity (21); A clamping member (30), the clamping member (30) comprising a clamping head (31) and a connecting column (32), the clamping head (31) being located in the cavity (21), the connecting column (32) being connected to the clamping head (31) and passing through the connecting shell (20), a clamping gap (40) being formed between the clamping head (31) and the inner wall of the cavity (21), the clamping head (31) being driven by the connecting column (32) to adjust the size of the clamping gap (40).

2. The expansion terminal according to claim 1, characterized in that: The connecting shell (20) comprises a top plate (23), a bottom plate (24) and a side plate (25) connected between the top plate (23) and the bottom plate (24); the connecting column (32) is located on the top plate (23); the upper surface of the top plate (23) is a first matching plane, and the upper surface of the bottom plate (24) is a second matching plane.

3. The expansion terminal according to claim 1, characterized in that: The opening portion (22) is located at an end of the connecting shell (20) away from the connecting plate (10).

4. The expansion terminal according to claim 1, characterized in that: An avoidance slope (26) is provided at the end of the connection shell (20) facing the connection plate (10).

5. The expansion terminal according to claim 1, characterized in that: An inner recess (311) on one side of the clamping head (31) away from the connecting column (32).

6. The expansion terminal according to claim 5, characterized in that: The inner concave portion (311) includes a first inclined surface (3111) and a second inclined surface (3112).

7. The extended connection terminal according to any one of claims 1 to 6, characterized in that: The width a of the clamping head (31) and the width b of the opening (22) satisfy the following relationship: 0.7≤a / b<1.

8. The extended connection terminal according to any one of claims 1 to 6, characterized in that: A bearing member (33) is provided between the connecting column (32) and the clamping head (31).

9. The extended connection terminal according to any one of claims 1 to 6, characterized in that: The expansion terminal further comprises a nut (50), a threaded structure is arranged on the connection column (32), a threaded hole is arranged on the connection shell (20), the threaded structure is threadedly matched with the threaded hole, the nut (50) is connected to the threaded structure, and when the nut (50) rotates, the connection column (32) moves toward one end of the clamping head (31).

10. The extended connection terminal according to any one of claims 1 to 6, characterized in that: There are a plurality of clamping members (30), and the plurality of clamping members (30) are arranged at intervals along the length direction of the connecting shell (20).

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