Terminal blocks and circuit breakers

Abstract

This utility model relates to the field of terminal block technology, and more particularly to a terminal block and circuit breaker. The terminal block includes a contact plate, a pressure plate, and a driving component. The contact plate has a first threaded hole, which is a through hole. The pressure plate has a second threaded hole, which is a blind hole, and the pressure plate is slidably connected to the contact plate. The driving component has an external thread on its outer periphery, and one end of the driving component is screwed into the first and second threaded holes in sequence, abutting against the bottom wall of the second threaded hole. The driving component can drive the pressure plate to slide relative to the contact plate, thereby pressing or releasing the wire between the pressure plate and the contact plate. The terminal block has a simple structure, high assembly efficiency, and is less prone to the risk of loose wiring, exhibiting high stability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and in particular to a terminal block and circuit breaker. Background Technology

[0002] Circuit breakers, as a common low-voltage electrical appliance, are widely used in power systems to distribute electrical energy, protect lines and power equipment from overload and short-circuit damage, and can also be used for line switching and motor starting. The circuit breaker's terminals, as one of its core components, play a crucial role in connecting and securing conductors, and directly affect the circuit breaker's performance and reliability.

[0003] Existing terminal block structures are relatively complex, occupying a large amount of space and requiring cumbersome assembly, which increases production costs and reduces assembly efficiency. Furthermore, the assembly stability between components in existing terminal blocks is poor, increasing the risk of loose connections and consequently reducing the reliability and stability of the terminals.

[0004] Therefore, there is an urgent need to design a terminal block and circuit breaker to solve the above technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a wiring terminal and circuit breaker with a simple structure, high assembly efficiency, low risk of loose wiring, and high stability and reliability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, this utility model provides a wiring terminal, including:

[0008] A contact plate, wherein a first threaded hole is provided on the contact plate, and the first threaded hole is a through hole;

[0009] A pressure plate, wherein the pressure plate is provided with a second threaded hole, and the second threaded hole is a blind hole, and the pressure plate is slidably connected to the contact plate;

[0010] The driving component has an external thread on its outer peripheral side. One end of the driving component is screwed into the first threaded hole and the second threaded hole in sequence and abuts against the bottom wall of the second threaded hole. The driving component can drive the pressure plate to slide relative to the contact plate so that the pressure plate and the contact plate press or release the wire.

[0011] As an optional technical solution for a terminal block, the contact plate includes a first plate body, a second plate body, and a third plate body. One end of the second plate body is connected to the first plate body, and the other end is connected to the third plate body. The first threaded hole is disposed on the first plate body, and the wire clamping plate is disposed between the first plate body and the third plate body. The wire clamping plate is slidably connected to the second plate body, and the space between the wire clamping plate and the third plate body is used to accommodate the wire.

[0012] As an optional technical solution for the terminal block, the first plate is parallel to the third plate, and the second plate is perpendicular to both the first plate and the third plate.

[0013] As an optional technical solution for the wiring terminal, the first plate, the second plate and the third plate are all provided with protrusions, which are configured to engage with the inner wall of the circuit breaker housing.

[0014] As an optional technical solution for a terminal block, the driving component includes a head and a rod, the head being connected to the rod, the head being provided with a hexagonal countersunk hole, the outer peripheral surface of the rod being provided with the external thread, and the end of the rod away from the head being a flat end, the flat end abutting against the bottom wall of the second threaded hole.

[0015] As an optional technical solution for the terminal block, the pressure plate has an anti-slip texture on the side that contacts the wire, and the anti-slip texture extends along the length and / or width direction of the pressure plate.

[0016] As an optional technical solution for the terminal block, the pressure plate is provided with a boss, the second plate is provided with a sliding groove, the sliding groove extends along the sliding direction of the driving member, and the boss is slidably connected to the sliding groove.

[0017] As an optional technical solution for terminal blocks, multiple bosses and sliding grooves are provided, and the bosses and sliding grooves are provided in a one-to-one correspondence.

[0018] On the other hand, the present invention provides a circuit breaker, the circuit breaker including a housing and the wiring terminals described in any of the above optional technical solutions, the wiring terminals being disposed inside the housing and connected to the inner wall of the housing.

[0019] As an optional technical solution for a circuit breaker, a stationary contact is provided inside the housing, and the contact plate of the terminal block is electrically connected to the stationary contact so that the conductor is connected to the internal circuit of the circuit breaker.

[0020] The beneficial effects of this utility model include at least the following:

[0021] This utility model provides a terminal block comprising a contact plate, a pressure plate, and a driving component. The contact plate has a first threaded hole, which is a through hole. The pressure plate has a second threaded hole, which is a blind hole, and the pressure plate is slidably connected to the contact plate. The driving component has an external thread on its outer periphery, and one end of the driving component is screwed into the first and second threaded holes in sequence, abutting against the bottom wall of the second threaded hole. The driving component can drive the pressure plate to slide relative to the contact plate, thereby pressing or releasing the wire between the pressure plate and the contact plate.

[0022] In summary, the terminal block structure of this invention is simple and easy to assemble. The driving component, through its threaded engagement with the contact plate and pressure plate, reduces the complex structure of traditional terminal blocks and other components. Operators only need to screw the driving component to cause it to drive the pressure plate to clamp the wire, thus fixing the wire and improving assembly efficiency while reducing costs. Furthermore, one end of the driving component in this invention is sequentially screwed into the first and second threaded holes and abuts against the bottom wall of the second threaded hole. The second threaded hole is a blind hole, which precisely limits over-screwing of the driving component, preventing deformation of the pressure plate and damage to the wire due to excessive screwing, or insufficient clamping force due to shallow screwing. The driving component, screwed through double threaded holes (first and second threaded holes), provides stronger transmission stability and reduces slippage when driving the pressure plate, improving the stability and reliability of the terminal block and reducing the risk of loose wiring.

[0023] This utility model also provides a circuit breaker with a simple structure, high assembly efficiency, reduced cost, and improved reliability and stability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the wiring terminal provided in an embodiment of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the driving component provided in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the pressure plate provided in this embodiment of the utility model;

[0028] Figure 4This is a schematic diagram of the contact plate provided in an embodiment of the present invention;

[0029] Figure 5 This is a cross-sectional view of the circuit breaker provided in this embodiment of the utility model.

[0030] Figure Labels

[0031] 10. Contact plate; 11. First plate; 111. First threaded hole; 12. Second plate; 121. Slide groove; 13. Third plate; 14. Protrusion;

[0032] 20. Pressure plate; 21. Second threaded hole; 22. Boss;

[0033] 30. Driving component; 31. Head; 32. Rod; 321. Flat end; 33. External thread;

[0034] 40. Shell. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] This embodiment provides a terminal block and circuit breaker with a simple structure and high assembly efficiency; it is less prone to the risk of loose wiring and has high stability and reliability.

[0043] like Figures 1-4As shown, the terminal block mainly includes a contact plate 10, a pressure plate 20, and a driving member 30. The contact plate 10 has a first threaded hole 111, which is a through hole. The pressure plate 20 has a second threaded hole 21, which is a blind hole. The pressure plate 20 is slidably connected to the contact plate 10. The driving member 30 has an external thread 33 on its outer periphery. One end of the driving member 30 is screwed into the first threaded hole 111 and the second threaded hole 21, and abuts against the bottom wall of the second threaded hole 21. The driving member 30 can drive the pressure plate 20 to slide relative to the contact plate 10, thereby pressing or releasing the wire (not shown in the figure) between the pressure plate 20 and the contact plate 10.

[0044] Based on the above design, the terminal block structure in this embodiment is simple and easy to assemble. The drive component 30, through its threaded engagement with the contact plate 10 and the pressure plate 20, reduces the complex structure of traditional wiring frames and other components. Operators only need to screw the drive component 30 to cause it to drive the pressure plate 20 to press the wire, thereby fixing the wire and improving assembly efficiency while reducing costs. Furthermore, in this embodiment, one end of the drive component 30 is sequentially screwed into the first threaded hole 111 and the second threaded hole 21, abutting against the bottom wall of the second threaded hole 21. The second threaded hole 21 is a blind hole, which precisely limits the over-screwing of the drive component 30, preventing deformation of the pressure plate 20 and damage to the wire due to excessive screwing, or insufficient clamping force due to shallow screwing. The drive component 30 is screwed through double threaded holes (first threaded hole 111 and second threaded hole 21), which makes the transmission stability stronger and the drive pressure plate 20 less likely to slip when sliding, thereby improving the stability and reliability of the terminal block and reducing the risk of loose wiring.

[0045] For example, the operator can rotate the drive unit 30 clockwise to lower the pressure plate 20 and press the wire. By rotating the drive unit 30 counterclockwise, the operator can raise the pressure plate 20 and release the wire.

[0046] like Figures 1-4 As shown, the contact plate 10 in this embodiment includes a first plate body 11, a second plate body 12, and a third plate body 13. One end of the second plate body 12 is connected to the first plate body 11, and the other end is connected to the third plate body 13. A first threaded hole 111 is provided on the first plate body 11. A wire pressing plate 20 is provided between the first plate body 11 and the third plate body 13. The wire pressing plate 20 is slidably connected to the second plate body 12, and the space between the wire pressing plate 20 and the third plate body 13 is used to accommodate wires.

[0047] The first plate 11, the second plate 12, and the third plate 13 can be integrally formed or welded together.

[0048] Furthermore, the first plate 11 is parallel to the third plate 13, and the second plate 12 is perpendicular to both the first plate 11 and the third plate 13. In other words, the contact plate 10 is U-shaped. Compared with the traditional single flat contact plate 10, the U-shaped contact plate 10 has stronger resistance to bending and deformation, can withstand greater clamping force from the drive component 30 without damage, and extends the service life of the terminal block.

[0049] In some alternative embodiments, the axis of the first threaded hole 111 is collinear with the central axis of the first plate 11, so that the first threaded hole 111 can be located at the center of the first plate 11, which can ensure the stable transmission of the drive component 30 and prevent the pressure plate 20 or the contact plate 10 from being skewed.

[0050] Traditional wiring terminals require additional fasteners such as screws and clips to be fixed inside the circuit breaker housing 40. However, in this embodiment, the protrusions 14 on the contact plate 10 directly engage with the inner wall of the housing 40. Specifically, as... Figure 4 As shown, in this embodiment, the first plate 11, the second plate 12, and the third plate 13 are all provided with protrusions 14, which are configured to engage with the inner wall of the circuit breaker housing 40. The protrusions 14 engage with the slots on the inner wall of the housing 40, which restricts the lateral and longitudinal displacement of the terminals, preventing the terminals from shaking inside the housing 40 during circuit breaker operation (such as vibration caused by line energization or bumps during transportation), thereby preventing the wires from loosening due to shaking and improving the operational reliability of the circuit breaker. Simultaneously, the one-to-one correspondence between the protrusions 14 and the slots enables precise installation and positioning of the terminals, eliminating the need for manual adjustment of the terminals' front-to-back and left-to-right positions and reducing assembly errors.

[0051] For example, multiple protrusions 14 are provided, and protrusions 14 are provided on both sides of the first plate 11, both sides of the second plate 12, and both sides of the third plate 13, so as to improve the stability and reliability of the assembly of the wiring terminal and the housing 40.

[0052] like Figures 1-2 As shown, the driving component 30 in this embodiment includes a head 31 and a rod 32. The head 31 is connected to the rod 32. The head 31 is provided with a hexagonal countersunk hole. The outer peripheral surface of the rod 32 is provided with an external thread 33. The end of the rod 32 away from the head 31 is a flat end 321. The flat end 321 abuts against the bottom wall of the second threaded hole 21.

[0053] The head 31 of the drive component 30 has a hexagonal countersunk hole, which is compatible with commonly used Allen wrenches on the market, eliminating the need for operators to purchase special tools. Of course, the hexagonal countersunk hole can also be replaced with a flathead or Phillips head hole to be compatible with most installation tools on the market.

[0054] The end of the rod 32 away from the head 31 is set as a flat end 321, which can be tightly abutted against the bottom wall of the second threaded hole 21 (blind hole) of the wire clamping plate 20. When the drive member 30 is screwed to the point where the flat end 321 contacts the bottom wall of the blind hole, the drive member 30 cannot be screwed in further, which effectively avoids the problem of deformation of the wire clamping plate 20 and damage to the drive member 30 due to excessive screwing, or the problem of insufficient wire clamping force due to insufficient screwing.

[0055] For example, the drive component 30 can be made of stainless steel to improve its mechanical strength.

[0056] In some optional embodiments, the pressure plate 20 has an anti-slip texture on the side that contacts the wire, and the anti-slip texture extends along the length and / or width direction of the pressure plate 20. The anti-slip texture increases the friction between the pressure plate 20 and the wire. Even if the circuit breaker vibrates during operation or the wire undergoes slight displacement due to thermal expansion and contraction, the friction can limit the slippage of the wire, prevent loosening of the wiring, and improve the reliability of the wiring.

[0057] For example, the anti-slip texture can be set to a type such as a serrated texture or a grid texture.

[0058] like Figures 3-4 As shown, in this embodiment, the pressure plate 20 is provided with a boss 22, and the second plate 12 is provided with a sliding groove 121. The sliding groove 121 extends along the sliding direction of the driving member 30, and the boss 22 is slidably connected to the sliding groove 121. The sliding engagement of the boss 22 and the sliding groove 121 provides a clear sliding path for the pressure plate 20, avoiding the left-right offset or tilting of the pressure plate 20 during the sliding process, ensuring that the pressure plate 20 is always directly facing the wire, and improving the reliability of wire clamping. At the same time, during assembly, it is only necessary to align the boss 22 of the pressure plate 20 with the sliding groove 121 of the second plate 12 and insert it to complete the pre-installation positioning of the pressure plate 20 and the contact plate 10, without the need for additional adjustment of the angle and position of the pressure plate 20, thus improving assembly efficiency.

[0059] Furthermore, multiple bosses 22 and sliding grooves 121 are provided, and the bosses 22 and sliding grooves 121 are provided in a one-to-one correspondence. For example, two bosses 22 are provided on one side of the pressure plate 20, and two sliding grooves 121 are provided on the second plate 12.

[0060] For example, the boss 22 and the pressure plate 20 are integrally formed, which improves mechanical strength, reduces assembly steps, and improves assembly efficiency.

[0061] like Figure 5 As shown, this embodiment also provides a circuit breaker, which includes a housing 40 and the aforementioned wiring terminals. The wiring terminals are disposed inside the housing 40 and connected to the inner wall of the housing 40.

[0062] The protrusion 14 on the contact plate 10 of the terminal block engages with the slot on the inner wall of the housing 40, thus enabling the assembly of the terminal block and the housing 40 without the need for additional screws, reducing the assembly steps of the circuit breaker, improving assembly efficiency, and reducing costs.

[0063] Because the circuit breaker uses the aforementioned terminals, it has a simple structure, high assembly efficiency, reduced costs, and improved reliability and stability.

[0064] For example, the housing 40 is made of flame-retardant ABS material. Two terminals are provided inside the housing 40, which are the inlet and outlet terminals of the circuit breaker, respectively.

[0065] Furthermore, a stationary contact (not shown in the figure) is provided inside the housing 40. The contact plate 10 of the terminal block is electrically connected to the stationary contact to enable the wires to conduct through the internal circuit of the circuit breaker. The stationary contact makes the wire connection more direct, reduces the need for additional wires or connectors, and simplifies the internal circuit layout of the circuit breaker.

[0066] For example, stationary contacts can be silver-plated to improve conductivity and corrosion resistance.

[0067] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0068] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A terminal, characterized by, include: A contact plate (10) is provided with a first threaded hole (111), and the first threaded hole (111) is a through hole; A pressure plate (20) is provided with a second threaded hole (21), and the second threaded hole (21) is a blind hole. The pressure plate (20) is slidably connected to the contact plate (10). The driving member (30) has an external thread (33) on its outer peripheral side. One end of the driving member (30) is screwed into the first threaded hole (111) and the second threaded hole (21) in sequence and abuts against the bottom wall of the second threaded hole (21). The driving member (30) can drive the pressure plate (20) to slide relative to the contact plate (10) so that the pressure plate (20) and the contact plate (10) press or release the wire.

2. The terminal of claim 1 wherein, The contact plate (10) includes a first plate body (11), a second plate body (12), and a third plate body (13). One end of the second plate body (12) is connected to the first plate body (11), and the other end is connected to the third plate body (13). The first threaded hole (111) is disposed on the first plate body (11). The wire pressing plate (20) is disposed between the first plate body (11) and the third plate body (13). The wire pressing plate (20) is slidably connected to the second plate body (12), and the space between the wire pressing plate (20) and the third plate body (13) is used to accommodate the wire.

3. The terminal of claim 2 wherein, The first plate (11) is parallel to the third plate (13), and the second plate (12) is perpendicular to both the first plate (11) and the third plate (13).

4. The terminal of claim 2 wherein, The first plate (11), the second plate (12) and the third plate (13) are each provided with a protrusion (14), which is configured to engage with the inner wall of the circuit breaker housing (40).

5. The terminal of claim 2 wherein, The pressure plate (20) is provided with a boss (22), and the second plate (12) is provided with a sliding groove (121). The boss (22) and the sliding groove (121) are slidably connected.

6. The terminal of claim 5 wherein, The boss (22) and the slide (121) are both provided in multiples, and the boss (22) and the slide (121) are provided in a one-to-one correspondence.

7. The terminal block according to claim 1, characterized in that, The driving component (30) includes a head (31) and a rod (32). The head (31) is connected to the rod (32). The head (31) is provided with a hexagonal countersunk hole. The outer peripheral surface of the rod (32) is provided with the external thread (33). The end of the rod (32) away from the head (31) is a flat end (321). The flat end (321) abuts against the bottom wall of the second threaded hole (21).

8. The terminal block according to claim 1, characterized in that, The pressure plate (20) has an anti-slip texture on the side that contacts the wire, and the anti-slip texture extends along the length and / or width of the pressure plate (20).

9. A circuit breaker, characterized in that, The circuit breaker includes a housing (40) and a terminal block according to any one of claims 1-8, the terminal block being disposed within the housing (40) and connected to the inner wall of the housing (40).

10. The circuit breaker according to claim 9, characterized in that, A stationary contact is provided inside the housing (40), and the contact plate (10) of the terminal block is electrically connected to the stationary contact so that the wire is connected to the internal circuit of the circuit breaker.

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