Wire terminal, wiring device, and electrical apparatus

Abstract

The present disclosure relates to a wiring terminal, a wiring device and an electrical equipment, wherein the wiring terminal is configured to be connected with a conductive piece (45) and comprises: a terminal body (1), a first end of the terminal body (1) being an electrical connection end (11) configured to be electrically connected with the conductive piece (45), a second end of the terminal body (1) being a wiring end (12) configured to be electrically connected with a wire (5); and a limiting piece (2) sleeved on the terminal body (1) and rotatable along the circumference of the terminal body (1), and the limiting piece (2) is configured to be fixed in a state that the electrical connection end (11) is electrically connected with the conductive piece (45) in place; wherein an outer side wall of the terminal body (1) is provided with a clamping portion (13) between the electrical connection end (11) and the wiring end (12), and the clamping portion (13) is configured to axially limit and lock the limiting piece (2).

Description

Technical Field

[0001] This disclosure relates to the field of equipment wiring technology, and in particular to a terminal block, wiring device and electrical equipment. Background Technology

[0002] Existing large equipment operates at high currents. Wiring devices used to control high-current motors are prone to incomplete connections during production operations, leading to poor contact. Vibration during transportation and use can also cause loosening. All of these issues can result in overheating and burning of wiring and components, affecting the unit's lifespan and increasing after-sales maintenance costs. Utility Model Content

[0003] Embodiments of this disclosure provide a terminal block, wiring device, and electrical equipment that can prevent the terminal block from becoming loose while electrically connected.

[0004] According to a first aspect of this disclosure, a terminal block is provided, configured to connect to a conductive element and comprising:

[0005] The terminal body has a first end serving as an electrical connection terminal configured to be electrically connected to a conductive element, and a second end serving as a wiring terminal configured to be electrically connected to a wire; and

[0006] A limiting member is sleeved on the terminal body and rotatable along the circumference of the terminal body, and the limiting member is configured to be fixed in the state where the electrical connection end is electrically connected to the conductive element.

[0007] The outer wall of the terminal body has an elastic engaging portion between the electrical connection end and the wiring end, and the engaging portion is configured to axially limit and lock the limiting member.

[0008] In some embodiments, the engaging portion includes a plurality of resilient fins spaced circumferentially, the resilient fins gradually tilting radially outward from the electrical connection end to the wiring end towards the terminal body.

[0009] In some embodiments, the terminal body is a cylindrical structure at least in the length segment where the engagement portion is located. The side wall of the cylindrical structure is provided with a cutout. The cutout is inclined from the outside to the inside from the wiring terminal to the electrical connection terminal. The portion of the cylindrical structure located outside the cutout is bent outward to form an elastic fin.

[0010] In some embodiments, a preset gap exists between the inner wall of the limiting member and the outer wall of the terminal body.

[0011] In some embodiments, the inner wall of the limiting member is provided with internal threads.

[0012] In some embodiments, the engaging portion is provided axially on the terminal body in a region close to the wiring terminal.

[0013] In some embodiments, the limiting element is formed of injection-molded material.

[0014] According to a second aspect of this disclosure, a wiring device is provided, comprising:

[0015] The wiring terminals described in the above embodiments;

[0016] Electrical components, including conductive parts; and

[0017] An insulating protective element is used to provide at least insulation protection for wiring terminals. The insulating protective element includes a fixing part configured to be fixed to a limiting element when the electrical connection terminal is electrically connected to a conductive element in place.

[0018] In some embodiments, the electrical component further includes a body portion, a conductive element disposed on the body portion; and an insulating protective element includes a snap-fit ​​configured to mount the insulating protective element on the body portion.

[0019] In some embodiments, the inner wall of the limiting member is provided with an internal thread, the fixing part is an external threaded sleeve, the terminal body passes through the external threaded sleeve and is electrically connected to the conductive member, the external threaded sleeve is inserted into the gap between the limiting member and the terminal body, and the limiting member is screwed into the external threaded sleeve for fixation.

[0020] In some embodiments, the insulating protective member further includes a first base, a fixing portion disposed on the side of the first base away from the conductive member, the fixing portion having a hollow portion through which the terminal body passes, and the fixing portion being configured such that the terminal body contacts the conductive member after passing through.

[0021] In some embodiments, the insulating protective member further includes a second substrate connected to one end of the first substrate along a first direction and disposed at an angle to the first substrate. The second substrate covers the conductive member and has a recessed portion at a position directly opposite the fixing portion to expose the fixing portion.

[0022] In some embodiments, the insulating protective member further includes a second substrate connected to one end of the first substrate along a first direction and disposed at an angle to the first substrate. The second substrate is provided with an operating hole, which forms a channel for fixing the terminal to the conductive member.

[0023] In some embodiments, the wiring device further includes fasteners configured to secure the terminals to the conductive element via an access hole.

[0024] In some embodiments, the first substrate has a heat dissipation window in the region near the fixing part.

[0025] In some embodiments, the electrical component includes a plurality of conductive elements spaced apart along a second direction, and the first base includes a plurality of protrusions spaced apart along the second direction. The protrusions protrude outward in a direction away from the electrical component, and a fixing part is provided between each group of adjacent protrusions.

[0026] The insulating protective component also includes a second base, which is connected to one end of the first base along the first direction and is set at an angle to the first base. The second base has grooves between adjacent protrusions to expose the fixing part. The second base has multiple operating holes that are directly opposite to the multiple conductive components.

[0027] In some embodiments, the insulating protective component is integrally molded from injection-molded material.

[0028] According to a third aspect of this disclosure, an electrical device is proposed, including the wiring device of the above embodiments.

[0029] Based on the above technical solution, the terminal block of this embodiment has an elastic engaging portion on the outer wall of the terminal body. When the limiting member is inserted from the electrical connection end, the engaging portion deforms inward under the pressure of the inner wall of the limiting member, so that the limiting member is smoothly installed in place. At this time, the elasticity of the engaging portion abuts against the inner wall of the limiting member, so that the engaging portion is axially limited. At this time, the limiting member can rotate along the circumference of the terminal body. In this way, when the terminal body is connected to the wire, during the process of gradually bringing the terminal body closer to the conductive member and connecting it to the conductive member, the rotation of the limiting member can prevent the wire from twisting.

[0030] Furthermore, with the electrical connection terminal and conductive component installed in place, the limiting component is fixed, ensuring that the terminal body remains in the plugged-in position and preventing the wire from swinging back and forth due to vibration, which could cause the wiring terminal to loosen. This ensures reliable contact between the terminal body and the conductive component and prevents overheating and burning of wiring and components due to poor contact during use. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0032] Figure 1 This is a perspective view of some embodiments of the terminal blocks disclosed herein.

[0033] Figure 2 This is a side view of some embodiments of the terminal blocks disclosed herein.

[0034] Figure 3 This is a perspective view of some embodiments of the insulating protective components in the wiring device of this disclosure.

[0035] Figure 4 This is a front view of some embodiments of the insulating protective components in the wiring device of this disclosure.

[0036] Figure 5This is a perspective view of an insulating protective element mounted on the upper structure of an electrical component in some embodiments of the wiring device disclosed herein.

[0037] Figure 6 for Figure 5 A schematic diagram of the wiring device and wire connection.

[0038] Figure 7 This is a side view of some embodiments of the wiring device disclosed herein.

[0039] Figure 8 This is a perspective view of an insulating protective element installed on an electrical component in some embodiments of the wiring device disclosed herein.

[0040] Figure 9 for Figure 8 The diagram shows the wiring device and the connection of the wires.

[0041] Explanation of reference numerals in the attached figures

[0042] 1. Terminal body; 11. Electrical connection terminal; 12. Wiring terminal; 121. Wire clamping position; 13. Engaging part; 131. Flexible fin; 14. Cutout;

[0043] 2. Limiting components;

[0044] 3. Insulating protective component; 30. Buckle; 31. First base; 32. Second base; 33. Fixing part; 34. First protrusion; 341. First opening; 35. Second protrusion; 351. Second opening; 36. Recessed part; 37. Operating hole; 38. Transition surface; 39. Heat dissipation window;

[0045] 4. Electrical components; 41. Side plate; 42. Top cover plate; 43. First positioning part; 43'. Second positioning part; 44. Base; 45. Conductive component; 46. Base;

[0046] 5. Wires;

[0047] 6. Fasteners;

[0048] z, first direction; x, second direction; y, third direction. Detailed Implementation

[0049] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0050] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0051] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0052] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0053] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0054] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0055] In view of the above problems, this disclosure proposes a terminal block, such as Figure 7As shown, the terminal block is configured to be electrically connected to the conductive element 45, which is disposed in the electrical component 4. The electrical component 4 can be various, such as an AC contactor, circuit breaker, terminal block, air switch, thermal protector, terminal block or relay, etc. The electrical component 4 can be a DC or AC device.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments, the terminal block includes:

[0057] Terminal body 1, with its first end serving as an electrical connection terminal 11 configured to be electrically connected to conductive element 45, and its second end serving as a wiring terminal 12 configured to be electrically connected to wire 5; and

[0058] The limiting member 2 is sleeved on the terminal body 1 and can rotate around the circumference of the terminal body 1, and the limiting member 2 is configured to be fixed in the state where the electrical connection end 11 is electrically connected to the conductive member 45.

[0059] Among them, the outer wall of the terminal body 1 is provided with an elastic engaging part 13 between the electrical connection end 11 and the wiring end 12. The engaging part 13 is configured to axially limit and lock the limiting member 2.

[0060] Specifically, the terminal body 1 is made of conductive metal and can be cylindrical or elliptical. The first end of the terminal body 1 serves as an electrical connection end 11, which may have a first preset length to ensure reliable electrical connection with the conductive element 45. For example, the electrical connection end 11 and the conductive element 45 can be connected by contact, insertion, or snap-fit. The second end of the terminal body 1 serves as a wiring end 12 for electrical connection with the wire 5. The diameter of the wiring end 12 may be larger than that of the electrical connection end 11, and the wiring end 12 has a second preset length to ensure reliable connection with the wire 5. For example, the wiring end 12 can be a thin cylindrical shape. After the insulation at the end of the wire 5 is removed, the conductive part is inserted into the wiring end 12, and the end of the wire 5 is fixed inside the wiring end 12 by compression. The outer wall of the wiring end 12 serves as a wire clamping position 121.

[0061] The outer wall of the terminal body 1 has a locking portion 13 between the electrical connection end 11 and the wiring end 12. The locking portion 13 is configured to axially limit and lock the limiting member 2. The locking portion 13 only allows the limiting member 2 to be fitted from the electrical connection end 11 to the wiring end 12 for installation, and prevents the limiting member 2 from falling out in the opposite direction after installation, that is, prevents the limiting member 2 from moving toward the electrical connection end 11. The locking portion 13 may be elastic to facilitate the installation of the limiting member 2.

[0062] For example, the inner wall of the limiting member 2 may be provided with a slot. When the limiting member 2 is inserted from the electrical connection end 11 into the position of the engaging part 13, the engaging part 13 enters the slot, thereby realizing the axial limiting and locking of the limiting member 2.

[0063] For example, the inner wall of the limiting member 2 is provided with a slot, or it may not be provided with a slot. The engaging part 13 is elastic. When the limiting member 2 is inserted from the electrical connection end 11 into the position of the engaging part 13, the engaging part 13 deforms inward under the pressure of the inner wall of the limiting member 2, so that the limiting member 2 is installed smoothly. At this time, the engaging part 13 abuts against the inner wall of the limiting member 2 outward under the elastic action, so as to limit and lock the limiting member 2.

[0064] In this embodiment, the terminal block has an elastic engaging portion 13 on the outer wall of the terminal body 1. When the limiting member 2 is inserted from the electrical connection end 11, the engaging portion 13 deforms inward under the pressure of the inner wall of the limiting member 2, so that the limiting member 2 can be installed smoothly. At this time, the elasticity of the engaging portion 13 abuts against the inner wall of the limiting member 2, so that the engaging portion 13 is axially limited. At this time, the limiting member 2 can rotate around the circumference of the terminal body 1. Thus, when the terminal end 12 of the terminal body 1 is already connected to the wire 5, during the process of gradually bringing the terminal body 1 closer to the conductive member 45 for electrical connection, the rotation of the limiting member 2 can prevent the wire 5 from twisting.

[0065] Furthermore, when the electrical connection terminal 11 and the conductive component 45 are installed in place, the limiting component 2 is fixed, which can ensure that the terminal body 1 is kept in the plugged position and prevent the wire 5 from swinging back and forth due to vibration, so as to avoid the terminal from becoming loose. This ensures that the terminal body 1 and the conductive component 45 have reliable contact and prevents poor contact from causing overheating and burning of the terminal, wiring and components during use.

[0066] In some embodiments, such as Figure 1 As shown, the engaging portion 13 includes a plurality of elastic fins 131 spaced apart along the circumference, and the elastic fins 131 gradually tilt outward from the electrical connection end 11 to the wiring end 12 toward the radially outer side of the terminal body 1.

[0067] For example, two elastic fins 131 can be provided, and the two elastic fins 131 are arranged opposite to each other, or multiple elastic fins can be provided.

[0068] Alternatively, the engaging portion 13 may also be an elastic fin that extends continuously along the entire circumference.

[0069] This embodiment features multiple elastic fins 131 spaced apart on the outer wall of the terminal body 1. When the limiting member 2 is inserted from the electrical connection end 11, the movement direction follows the tilting direction of the elastic fins 131. Under the pressure of the inner wall of the limiting member 2, the multiple elastic fins 131 are compressed and deformed inward, allowing the limiting member 2 to be smoothly installed in place. This structure reduces the resistance encountered when the limiting member 2 is inserted. After the limiting member 2 is installed in place, the elastic fins 131 return to their original position and abut against the inner wall of the limiting member 2 through elasticity. The multiple elastic fins 131 can apply force evenly through multi-point force application, thus axially limiting the engaging portion 13.

[0070] After the limiting member 2 is installed in place, the multiple elastic fins 131 abut against the inner wall of the limiting member 2 through their pointed ends. At this time, if the limiting member 2 is moved toward the electrical connection terminal 11, it will be against the tilting direction of the elastic fins 131, so the limiting member 2 cannot be dislodged. Moreover, at this time, the multiple elastic fins 131 abut against the inner wall of the limiting member 2 only through their pointed ends, so the limiting member 2 can rotate flexibly along the circumference of the terminal body 1, reducing resistance and facilitating installation by rotating the limiting member 2 during the installation of the wiring terminal.

[0071] In some embodiments, the terminal body 1 is a cylindrical structure at least in the length segment where the engaging portion 13 is located. The side wall of the cylindrical structure is provided with a cutout 14. The cutout 14 is inclined from the outside to the inside from the wiring terminal 12 to the electrical connection terminal 11. The portion of the cylindrical structure located outside the cutout 14 is bent outward to form an elastic fin 131.

[0072] For example, if the cylindrical structure is thin-walled, it is convenient to form a cut 14, which can connect the inner and outer sides of the cylindrical structure. Alternatively, if the sidewalls of the cylindrical structure are thick, the cut 14 can occupy only a portion of the thickness of the cylindrical structure.

[0073] This embodiment can easily form an elastic fin 131 by providing a cut 14 on the side wall of the terminal body 1, which is easy to process. The elastic fin 131 formed in this way also has great elasticity, which can not only allow the limiting member 2 to be smoothly inserted from the electrical connection end 11 along the inclined direction of the elastic fin 131, but also apply a great elastic force after the limiting member 2 is installed in place to prevent the limiting member 2 from falling out, thereby preventing the terminal from becoming loose after wiring.

[0074] In some embodiments, there is a preset gap between the inner wall of the limiting member 2 and the outer wall of the terminal body 1.

[0075] For example, the inner wall diameter of the limiting member 2 is 3mm, and the diameter of the terminal body 1 is 3mm.

[0076] This embodiment provides a preset gap between the inner wall of the limiting member 2 and the outer wall of the terminal body 1. This allows the limiting member 2 to be easily inserted into the terminal body 1 from the electrical connection end 11. Furthermore, when the terminal body 1 is electrically connected to the conductive member 45, the limiting member 2 can be flexibly rotated into place for fixation, preventing the wire 5 from twisting.

[0077] In some embodiments, the inner sidewall of the limiting member 2 is provided with internal threads.

[0078] This embodiment provides an internal thread on the inner side wall of the limiting member 2. The internal thread can guide the limiting member 2 during rotation, allowing it to move to a preset position and be fixed. It can also fix the limiting member 2 to prevent the terminal block from loosening and coming out after installation.

[0079] In some embodiments, the engaging portion 13 is provided axially on the terminal body 1 in a region near the terminal 12.

[0080] In this embodiment, the engaging part 13 is located in the area near the terminal 12. After the terminal body 1 is electrically connected to the conductive member 45 and the limiting member 2 is fixed, the tail of the terminal body 1 can be reliably fixed, preventing the wire 5 from causing the tail of the terminal body 1 to swing back and forth and become loose when subjected to vibration.

[0081] In some embodiments, the limiting member 2 is formed of injection-molded material.

[0082] The limiting component 2 is made of insulating material.

[0083] In this embodiment, the limiting member 2 is made of injection molding material. The injection molding material is relatively soft, which makes it easier for the engaging part 13 to enter the limiting member 2 when the limiting member 2 is fitted into the terminal body 1, thereby reducing the installation difficulty of the limiting member 2.

[0084] Secondly, this disclosure provides a wiring device, such as Figures 3 to 9 As shown, in some embodiments, it includes:

[0085] The wiring terminals described in the above embodiments;

[0086] Electrical component 4, including conductive element 45; and

[0087] The insulating protective element 3 is used to provide insulation protection for at least the wiring terminals. The insulating protective element 3 includes a fixing part 33, which is configured to be fixed to the limiting member 2 when the electrical connection end 11 is electrically connected to the conductive member 45.

[0088] For example, electrical component 4 can be of various types, such as AC contactors, circuit breakers, terminal blocks, air switches, thermal protectors, terminal blocks, or relays. Conductive element 45 is disposed within electrical component 4; for example, conductive element 45 can be a conductive sheet, conductive post, etc.

[0089] The insulating protective element 3 can insulate the area of ​​the terminal body 1 near the wiring terminal 12, or it can insulate the area where the electrical connection terminal 11 of the terminal body 1 is connected to the conductive element 45. If the electrical component 4 includes multiple conductive elements 45, and correspondingly, multiple wiring terminals need to be provided, the insulating protective element 3 can also be used to achieve insulation between adjacent terminal bodies 1.

[0090] The wiring device of this embodiment, by providing an insulating protective component 3, can provide insulation protection for the wiring terminals, preventing short circuits or arcing, and improving the safety of the electrical connection between the wiring terminals and the conductive component 45. Moreover, when the electrical connection terminal 11 is in place with the conductive component 45, the limiting component 2 is fixed to the fixing part 33 of the insulating protective component 3, which can lock the limiting component 2 and prevent the wire 5 from swinging back and forth due to vibration, so as to avoid the wiring terminals from becoming loose. This ensures reliable contact between the terminal body 1 and the conductive component 45 and prevents overheating and burning of wiring and components during use due to poor contact.

[0091] In some embodiments, such as Figure 3 As shown, the electrical component 4 also includes a body portion, and a conductive element 45 is disposed on the body portion; the insulating protective element 3 includes a latch 30, which is configured to install the insulating protective element 3 on the body portion.

[0092] For example, the insulating protective component 3 is detachably installed on the main body.

[0093] This embodiment, by providing a buckle 30 in the insulating protective component 3, allows the insulating protective component 3 to be reliably installed on the main body, thereby ensuring that the position of the fixing part 33 remains unchanged, thus reliably fixing the limiting part 2 to prevent the wiring terminal from loosening, further improving the contact reliability between the terminal body 1 and the conductive part 45, and preventing overheating and burning of wiring and devices during use due to poor contact.

[0094] In some embodiments, such as Figure 5 and Figure 6 As shown, the inner wall of the limiting member 2 is provided with an internal thread, the fixing part 33 is an external threaded sleeve, the terminal body 1 passes through the external threaded sleeve and is electrically connected to the conductive member 45, the external threaded sleeve is inserted into the gap between the limiting member 2 and the terminal body 1, and the limiting member 2 is screwed into the external threaded sleeve for fixation.

[0095] In this embodiment, when it is necessary to electrically connect the terminal body 1 to the conductive component 45, firstly, the limiting member 2 is inserted from the electrical connection end 11. Under the pressure of the inner wall of the limiting member 2, the engaging part 13 is squeezed and deformed inward, allowing the limiting member 2 to be smoothly installed in place. After the limiting member 2 is installed in place, the engaging part 13 resets and abuts against the inner wall of the limiting member 2 through elastic action. After the limiting member 2 is installed in place, the engaging part 13 abuts against the inner wall of the limiting member 2 through elastic action, preventing the limiting member 2 from disengaging from the electrical connection end 11.

[0096] Next, the electrical connection end 11 of the terminal body 1 is passed through the threaded sleeve and electrically connected to the conductive member 45. During the process of the terminal body 1 moving towards the threaded sleeve, although the limiting member 2 is blocked by the thread and cannot move directly, the limiting member 2 can be rotated to adapt its position to the movement of the terminal body 1. After the electrical connection end 11 and the conductive member 45 are in place, the limiting member 2 is locked by the thread engagement to prevent the terminal body 1 from loosening.

[0097] In some embodiments, such as Figure 3 As shown, the insulating protective component 3 also includes a first base 31, and a fixing part 33 is disposed on the side of the first base 31 away from the conductive component 45. The fixing part 33 has a hollow part through which the terminal body 1 passes. The fixing part 33 is configured such that the terminal body 1 contacts the conductive component 45 after passing through.

[0098] For example, the fixing part 33 may be cylindrical and extend toward the side of the first base 31 away from the conductive element 45.

[0099] This embodiment provides a first base 31 to shield and protect the conductive element 45 on the electrical component 4. A fixing part 33 is provided on the side of the first base 31 away from the conductive element 45, allowing the terminal body 1 to pass through the hollow part of the fixing part 33 from the side of the first base 31 away from the conductive element 45 and connect electrically with the conductive element 45. The fixing part 33 surrounds the outer periphery of the terminal body 1 to provide insulation protection for the terminal body 1, thereby improving the insulation reliability of the electrical connection between the terminal body 1 and the conductive element 45.

[0100] In some embodiments, such as Figure 3 As shown, the insulating protective component 3 also includes a second base 32, which is connected to one end of the first base 31 along the first direction z and is set at an angle to the first base 31. The second base 32 covers the conductive component 45. The second base 32 has a recessed portion 36 at a position directly opposite to the fixing portion 33 to expose the fixing portion 33.

[0101] For example, the second substrate 32 and the first substrate 31 can form a 90° angle, creating an L-shaped structure to form an insulating protective barrier. The first substrate 31 is perpendicular to the third direction y, which is perpendicular to the first direction z and the second direction x. The second substrate 32 is perpendicular to the first direction z. When the fixing part 33 is an externally threaded sleeve, it extends along the third direction y. The recessed part 36 can be located adjacent to the second substrate 32 and the first substrate 31, and directly opposite the fixing part 33. For example, the recessed part 36 can be a semi-circular groove.

[0102] This embodiment provides a recessed portion 36 at the position where the second base 32 is directly opposite the fixing portion 33. When installing the wiring terminal, the wiring terminal and the fixing portion 33 can be seen from the outside of the second base 32 through the recessed portion 36. This facilitates the insertion of the terminal body 1 into the hollow portion of the fixing portion 33 and makes it easier to rotate the limiting member 2 to the fixed position. This improves the convenience of operation and installation and enhances the reliability of the electrical connection of the wiring terminal.

[0103] In some embodiments, such as Figure 3 As shown, the insulating protective component 3 also includes a second base 32, which is connected to one end of the first base 31 along the first direction z and is set at an angle to the first base 31. The second base 32 is provided with an operating hole 37, which forms a channel for fixing the terminal 12 and the conductive component 45.

[0104] For example, the operating hole 37 can be a round hole or a rectangular hole, etc., and its shape is not limited. The operating hole 37 is directly opposite the conductive element 45 in the first direction z.

[0105] This embodiment provides an operating hole 37 on the second substrate 32, allowing operators to insert tools into the operating hole 37 to facilitate electrical connection between the terminal body 1 and the conductive element 45, thereby improving the reliability of the electrical connection.

[0106] In some embodiments, the wiring device further includes a fastener 6 configured to secure the terminal 12 to the conductive element 45 via an access hole 37.

[0107] For example, fastener 6 can be a screw or bolt. Conductive element 45 can be a conductive sheet. When the terminal body 1 is horizontally inserted for electrical connection, the terminal body 1 is inserted into the hollow part of the fixing part 33 and is positioned above and in contact with the conductive element 45. By tightening the fastener 6, the terminal body 1 can be pressed onto the conductive element 45. To further improve the reliability of the electrical connection, a gasket 7 can also be provided between the fastener 6 and the terminal 12.

[0108] This embodiment, by providing an operating hole 37, allows tools to be easily inserted through the operating hole 37 to install the fastener 6, pressing the terminal body 1 onto the conductive element 45. This improves the reliability of the electrical connection. Under conditions of significant vibration, the terminal body 1 and the conductive element 45 are less likely to become loose, preventing poor contact that could lead to overheating and burning of wiring and components during use.

[0109] In some embodiments, such as Figure 4 As shown, the first base 31 has a heat dissipation window 39 in the area near the fixing part 33.

[0110] For example, the heat dissipation window 39 can be rectangular or circular in shape.

[0111] The conductive element 45 is located on one side of the terminal body 1 along the first direction z, and the heat dissipation window 39 may be provided on the side of the fixing part 33 near the conductive element 45 along the first direction z. For example, the conductive element 45 is located below the terminal body 1, and the heat dissipation window 39 is provided below the fixing part 33.

[0112] This embodiment takes into account that the area where the terminal body 1 contacts the conductive element 45 will generate heat, and the electrical component 4 will also generate heat during operation. By providing a heat dissipation window 39 on the first substrate 31, the generated heat can be fully dissipated, preventing overcurrent or arcing problems due to excessive temperature at the contact point between the terminal body 1 and the conductive element 45, thereby improving the working reliability of the wiring device.

[0113] In some embodiments, such as Figures 3 to 5 As shown, the electrical component 4 includes a plurality of conductive elements 45 spaced apart along the second direction x, and the first base 31 includes a plurality of protrusions spaced apart along the second direction x. The protrusions protrude outward in a direction away from the electrical component 4, and a fixing part 33 is provided between each group of adjacent protrusions.

[0114] The insulating protective component 3 also includes a second base 32, which is connected to one end of the first base 31 along the first direction z and is set at an angle to the first base 31. The second base 32 has recesses 36 between adjacent protrusions to expose the fixing part 33. The second base 32 has multiple operating holes 37 that are directly opposite to the multiple conductive components 45.

[0115] For example, the first base 31 is provided with a plurality of protrusions. The side of the protrusion facing the electrical component 4 can be flat or recessed inward, so that the protrusion forms a thin shell structure.

[0116] The plurality of protrusions include a first protrusion 34 and a second protrusion 35. The first protrusion 34 is disposed between adjacent fixing parts 33, and the second protrusion 35 is located at both ends of the first base 31 along the second direction y. The first protrusion 34 includes two sidewalls and a connecting wall disposed between the two sidewalls, and the second protrusion 35 includes one sidewall and a connecting wall disposed at the end of the sidewall. The plurality of fixing parts 33 are arranged side by side at intervals along the second direction x.

[0117] Optionally, the conductive element 45 is provided with a first base 31 including two protrusions spaced apart along the second direction x.

[0118] This embodiment provides a protrusion on the first base 31 that extends away from the electrical component 4. When multiple terminals need to be installed, the protrusion can separate two adjacent terminals, increasing the creepage distance, ensuring the spacing between two adjacent terminals, preventing short circuits from generating large currents that could cause arcing, and improving the safety of the wiring device.

[0119] Furthermore, the protrusion is recessed inward on the side facing the electrical component 4 to form a shell-like structure. In order to isolate multiple conductive parts 45, the main body of the electrical component 4 is provided with a first insulating part between adjacent conductive parts 45. The first insulating part is provided with a first positioning part 43. When the insulating protective part 3 is installed on the electrical component 4, the first insulating part on the electrical component 4 is embedded in the groove behind the first protrusion 34, and a first opening 341 can be provided on the connecting wall of the first protrusion 34 for engaging and positioning the first positioning part 43, thereby improving the stability of the insulating protective part 3 installed on the electrical component 4.

[0120] The second protrusion 35 has a second opening 351. The main body of the electrical component 4 has a second insulating part located outside the outermost conductive part 45. The second insulating part has a second positioning part 43'. When the insulating protective part 3 is installed on the electrical component 4, the second insulating part on the electrical component 4 is embedded in the groove behind the second protrusion 35. The second opening 351 can be provided on the connecting wall of the second protrusion 35 for engaging and positioning the second positioning part 43', thereby improving the stability of the insulating protective part 3 installed on the electrical component 4.

[0121] In some embodiments, the insulating protective component 3 is integrally molded from injection molding material.

[0122] In this embodiment, the insulating protective component 3 is integrally molded from injection molding material, which facilitates the processing of insulating protective components 3 with complex structural surfaces. Furthermore, the integral structure improves the structural rigidity of the insulating protective component 3. The fixing part 33 and the first base 31 form an integral connection structure, which enhances the firmness of the fixing part 33 in fixing the limiting member 2. This integral structure also facilitates installation on electrical components 4. For example, flame-retardant injection molding material can be used to prevent short circuits from causing ignition and fire in extreme cases.

[0123] The following is combined Figures 1 to 9 Taking electrical component 4 as an example of an AC contactor, a specific embodiment of the wiring device of this disclosure is given.

[0124] like Figure 8 and Figure 9 As shown, the AC contactor includes a base 46, such as Figure 7 As shown, the base 46 is provided with the main body of the AC contactor, the main body including a base 44, and a conductive element 45 disposed on the base 44, such as... Figure 5 As shown, the main body also includes side plates 41 and top cover plates 42. The two side plates 41 are located on both sides of all conductive elements 45, and the top cover plates 42 overlap the top of the two top cover plates 42.

[0125] The AC contactor includes three conductive elements 45, each used to connect to three external wires 5 for three-phase power supply. The three conductive elements 45 are spaced apart along a second direction x (within the horizontal plane). The main body has a first insulating portion between adjacent conductive elements 45, and the first insulating portion has a first positioning portion 43 located at the upper-middle position along the first direction z (height direction). The main body has a second insulating portion outside the outermost conductive element 45, and the second insulating portion has a second positioning portion 43' located at the upper-middle position along the first direction z (height direction).

[0126] The insulating protective component 3 includes a first base 31 and a second base 32 connected to form an L-shape. The first base 31 is perpendicular to a third direction y, and the second base 32 is perpendicular to a first direction z. That is, the first base 31 is vertically disposed and shields the side of the main body, and the second base 32 is horizontally disposed and shields the top of the main body. A transition surface 38, such as a slope or an arc surface, may be provided on the outer side of the connection between the first base 31 and the second base 32.

[0127] The first base 31 includes a plurality of protrusions spaced apart along a second direction x. The protrusions project outwards in a direction away from the electrical component 4. A fixing part 33, such as an externally threaded sleeve, is provided between each group of adjacent protrusions. The plurality of protrusions includes a first protrusion 34 and a second protrusion 35. The first protrusion 34 is located between adjacent fixing parts 33, and the second protrusion 35 is located at both ends of the first base 31 along the second direction y. A heat dissipation window 39 is provided below each fixing part 33 of the first base 31.

[0128] The second base 32 has recesses 36, such as semi-circular grooves, between adjacent protrusions to expose the fixing part 33 from above. The second base 32 has multiple operating holes 37 that are one-to-one with the multiple conductive parts 45. The second base 32 has a buckle 30 on the side away from the first base 31 along the third direction y for engaging the insulating protective part 3 with the main body of the AC contactor. Buckles 30 can be provided at both ends of the second base 32 along the second direction x.

[0129] When installation is required, the insulating protective component 3 is installed on the main body of the AC contactor and engaged by the snap fastener 30. At this time, the first insulating part on the electrical component 4 is embedded in the groove behind the first protrusion 34, and a first opening 341 can be provided on the connecting wall of the first protrusion 34 for engaging and positioning the first positioning part 43. The second insulating part on the electrical component 4 is embedded in the groove behind the second protrusion 35, and a second opening 351 can be provided on the connecting wall of the second protrusion 35 for engaging and positioning the second positioning part 43'. Insulating protective component 3

[0130] For the terminal block, the limiting member 2 (nut) is inserted into the electrical connection end 11. The elastic fin 131 is compressed, allowing the limiting member 2 to be installed smoothly. After installation, the elastic fin 131 resets, preventing the limiting member 2 from falling out. At this time, the limiting member 2 can rotate. The wire 5 is then connected to the terminal block 12. For example, the terminal body 1 can adopt an elliptical pin design for easy assembly.

[0131] Next, when installing the terminal block onto the electrical component 4, first insert the electrical connection end 11 of the terminal body 1 into the inner hole of the fixing part 33 (external threaded sleeve). As the terminal body 1 moves inward and gradually contacts the conductive component 45 below, although the limiting member 2 is blocked by the external thread, it can be rotated to move inward along the fixing part 33 until it reaches the preset fixed position. During this process, the wire 5 will not twist. During the installation of the terminal block, observation can be made through the recessed part 36.

[0132] The limiting and locking function of the limiting member 2 prevents the terminal body 1 from becoming loose, thereby preventing poor contact between the terminal body 1 and the conductive member 45. The hollow part of the external threaded sleeve can pass through the terminal body 1, and the external thread cooperates with the limiting member 2 to lock it in place, preventing the terminal from shaking due to vibration during use and transportation, which could lead to loosening or poor contact, and also preventing improper insertion that could cause the terminal to overheat and burn out.

[0133] The center of the fixing part 33 is slightly higher than the conductive sheet. After the terminal body 1 reaches the preset electrical connection position, it is located above the conductive element 45 and fits against the conductive element 45. By tightening the fastener 6 through the operating hole 37, the terminal body 1 can be pressed onto the conductive element 45, ensuring a reliable electrical connection between the terminal body 1 and the conductive element 45, thus achieving a double fixing effect.

[0134] Finally, this disclosure provides an electrical device that, in some embodiments, includes the wiring device described above. For example, the electrical device may be an electric motor, a compressor, or an air conditioner, etc.

[0135] In this embodiment, the electrical equipment's wiring device, by insulating the terminals with the insulating protective component 3, can prevent short circuits or arcing, thus improving the safety of the electrical connection between the terminals and the conductive component 45. Furthermore, when the electrical connection terminal 11 is properly connected to the conductive component 45, the limiting component 2 is fixed to the fixing part 33 of the insulating protective component 3, locking the limiting component 2 to prevent the wire 5 from swinging back and forth due to vibration, which could cause the terminals to loosen. This ensures reliable contact between the terminal body 1 and the conductive component 45, preventing overheating and burnout of wiring and components due to poor contact during use. Therefore, the reliability of the electrical equipment is improved, reducing the risk of short circuits and poor contact causing excessive current and burnout of wiring during operation, and also improving the safety and lifespan of the electrical equipment.

[0136] The foregoing has provided a detailed description of a terminal block, wiring device, and electrical equipment provided in this disclosure. Specific embodiments have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of these embodiments are merely illustrative and are intended to aid in understanding the methods and core concepts of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications to this disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.

Claims

1. A terminal block, characterized in that, Configured to connect with a conductive element (45) and including: A terminal body (1), the first end of which serves as an electrical connection terminal (11) configured to be electrically connected to the conductive element (45), and the second end of which serves as a wiring terminal (12) configured to be electrically connected to a wire (5); and The limiting member (2) is sleeved on the terminal body (1) and rotatable along the circumference of the terminal body (1), and the limiting member (2) is configured to be fixed in the state where the electrical connection end (11) is electrically connected to the conductive member (45). The outer wall of the terminal body (1) is provided with an elastic engaging portion (13) between the electrical connection end (11) and the wiring end (12), and the engaging portion (13) is configured to axially limit and lock the limiting member (2).

2. The terminal block according to claim 1, characterized in that, The engaging portion (13) includes a plurality of elastic fins (131) spaced apart along the circumference, the elastic fins (131) gradually tilting radially outward from the electrical connection end (11) to the wiring end (12) towards the terminal body (1).

3. The terminal block according to claim 2, characterized in that, The terminal body (1) is a cylindrical structure at least in the length section where the engaging part (13) is located. The side wall of the cylindrical structure is provided with a cut (14). The cut (14) is inclined from the outside to the inside from the wiring terminal (12) to the electrical connection terminal (11). The part of the cylindrical structure located outside the cut (14) is bent outward to form the elastic fin (131).

4. The terminal block according to claim 1, characterized in that, There is a preset gap between the inner wall of the limiting member (2) and the outer wall of the terminal body (1).

5. The terminal block according to claim 1, characterized in that, The inner wall of the limiting member (2) is provided with internal threads.

6. The terminal block according to claim 1, characterized in that, The engaging portion (13) is provided on the terminal body (1) in the axial direction in the region near the terminal (12).

7. The terminal block according to any one of claims 1 to 6, characterized in that, The limiting component (2) is formed of injection molding material.

8. A wiring device, characterized in that, include: The terminal block according to any one of claims 1 to 7; Electrical component (4), including the conductive element (45); and An insulating protective element (3) is provided for at least insulating the terminal block. The insulating protective element (3) includes a fixing part (33) configured to be fixed to the limiting member (2) when the electrical connection end (11) is electrically connected to the conductive member (45).

9. The wiring device according to claim 8, characterized in that, The electrical component (4) further includes a body portion, and the conductive element (45) is disposed on the body portion; the insulating protective element (3) includes a snap fastener (30), which is configured to install the insulating protective element (3) on the body portion.

10. The wiring device according to claim 8, characterized in that, The inner wall of the limiting member (2) is provided with an internal thread, the fixing part (33) is an external thread sleeve, the terminal body (1) passes through the external thread sleeve and is electrically connected to the conductive member (45), the external thread sleeve is inserted into the gap between the limiting member (2) and the terminal body (1), and the limiting member (2) is screwed to the external thread sleeve for fixation.

11. The wiring device according to any one of claims 8 to 10, characterized in that, The insulating protective component (3) further includes a first base (31), and the fixing part (33) is disposed on the side of the first base (31) away from the conductive component (45). The fixing part (33) has a hollow portion through which the terminal body (1) passes. The fixing part (33) is configured to contact the conductive component (45) after the terminal body (1) passes through.

12. The wiring device according to claim 11, characterized in that, The insulating protective component (3) further includes a second base (32), which is connected to one end of the first base (31) along the first direction (z) and is set at an angle to the first base (31). The second base (32) covers the conductive component (45). The second base (32) has a recess (36) at a position directly opposite to the fixing part (33) to expose the fixing part (33).

13. The wiring device according to claim 11, characterized in that, The insulating protective component (3) further includes a second base (32), which is connected to one end of the first base (31) along the first direction (z) and is set at an angle to the first base (31). The second base (32) is provided with an operating hole (37), which forms a channel for fixing the terminal (12) to the conductive component (45).

14. The wiring device according to claim 13, characterized in that, It also includes a fastener (6) configured to secure the terminal (12) to the conductive element (45) via the operating hole (37).

15. The wiring device according to claim 11, characterized in that, The first substrate (31) has a heat dissipation window (39) in the area near the fixing part (33).

16. The wiring device according to claim 11, characterized in that, The electrical component (4) includes a plurality of conductive elements (45) spaced apart along the second direction (x), and the first base (31) includes a plurality of protrusions spaced apart along the second direction (x). The protrusions protrude outward in a direction away from the electrical component (4), and a fixing part (33) is provided between each group of adjacent protrusions. The insulating protective component (3) further includes a second base (32), which is connected to one end of the first base (31) along the first direction (z) and is set at an angle to the first base (31). The second base (32) has grooves (36) between adjacent protrusions to expose the fixing part (33). The second base (32) has a plurality of operating holes (37) that are directly opposite to the plurality of conductive components (45).

17. The wiring device according to any one of claims 8 to 10, characterized in that, The insulating protective component (3) is integrally molded using injection molding material.

18. An electrical device, characterized in that, Includes the wiring device as described in any one of claims 8 to 17.

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