Wiring terminal switch
By designing a movable first wiring terminal and shield in the terminal switch, the problem of misplugging of conductive parts is solved, more reliable electrical connections are achieved and safety risks are reduced, and the safety and stability of wiring operation are improved.
Patent Information
- Application Number
- CN202422420541.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The terminal key switch is prone to incorrectly plugging the conductive parts and unconstrained connections, resulting in circuit breakers and safety risks of electric shock.
A wiring terminal switch is designed, including a movable first wiring terminal and a shield member, which is arranged at intervals between the barrier member and the wiring cavity in the moving direction of the wiring terminal, blocks the threading window to prevent the conductive member from being inserted by mistake, and a guide frame is provided on the housing to correct the conductive member posture.
Improve the reliability of electrical connection of terminals, reduce the risk of circuit breakers and power consumption, and improve the safety and stability of wiring plug-in operation.
Smart Images
Figure CN223245457U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of switches, and in particular relates to a terminal switch. Background Art
[0002] In push-button switches equipped with terminal blocks, a terminal frame and a wire-pressing stud typically work together to press conductive components such as wires and copper sheets into the wire insertion cavity within the terminal frame, achieving a convenient and stable electrical connection. Typically, a wire-passing window is provided in the push-button switch housing, aligned with the wire insertion cavity. To connect a conductive component, simply insert it into the cavity and then rotate the wire-pressing stud to press it against the terminal frame.
[0003] However, in some push-button switches, the wire-pressing stud rotates in place and the terminal frame is a movable part. When waiting for wiring, the terminal frame is easily displaced, causing the wiring cavity and the wire-threading window to be misaligned. At this time, there is no terminal frame and wire-pressing stud in the wire-threading window, but it can accommodate conductive parts such as guides and copper sheets, and can also rotate the wire-pressing stud, which makes it easy for conductive parts to be misinserted and the connection to be unconstrained, which can easily cause circuit breakage and even safety risks such as electric shock. Summary of the Invention
[0004] The present application provides a terminal switch, which aims to at least to some extent solve the technical problems of terminal key switches that are prone to mis-insertion of conductive parts, lack of restraint, unreliable electrical connection, and high safety risks.
[0005] An embodiment of the present application provides a terminal block switch, comprising:
[0006] A key switch comprises a housing and a detachably connected elastic contact piece and a static contact piece, wherein the elastic contact piece and the static contact piece are arranged in the housing, and a threading window is opened on the housing;
[0007] The first terminal is movably arranged on the shell, and a first wire insertion cavity and a first shielding member are arranged on the first terminal at intervals along the moving direction of the first terminal. One of the first wire insertion cavity and the first shielding member is aligned with the wire threading window, and the first terminal is electrically connected to the static contact piece or the elastic contact piece.
[0008] In some embodiments, a first avoidance hole is opened on the shell, and the first shielding member is movably inserted into the first avoidance hole.
[0009] In some embodiments, a guide frame is provided on the outside of the threading window, and the inner wall surface of the guide frame is flush with the inner wall surface of the first wire insertion cavity.
[0010] In some embodiments, the guide frame is protruded from the surface of the shell.
[0011] In some embodiments, the first terminal comprises:
[0012] A first terminal frame is movably disposed in the housing, the first terminal frame is provided with the first wire insertion cavity, and the first shielding member is disposed on the first terminal frame;
[0013] The first wire-pressing stud is screwed on the first terminal frame, and the first wire-pressing stud is rotatably embedded in the first limiting hole opened on the shell. The first wire-pressing stud is provided with a first bolt head at one end away from the first terminal frame, and the diameter of the first bolt head is larger than the diameter of the first limiting hole. The axial direction of the first wire-pressing stud is arranged along the moving direction of the first terminal frame.
[0014] In some embodiments, a limiting groove is provided on the shell, the bottom of the limiting groove is connected to the first limiting hole, and a stop spring piece is protruded on the inner wall of the limiting groove, the first bolt head is located in the limiting groove, and the stop spring piece is blocked on the side of the first bolt head away from the first wire-pressing stud.
[0015] In some embodiments, the terminal switch further includes a second terminal, and the second terminal is movably disposed on the housing.
[0016] In some embodiments, the terminal switch further includes a conductive extension arm disposed on the housing, and the conductive extension arm is in sliding contact with the second terminal.
[0017] In some embodiments, the housing includes a base and an upper cover that are snap-fitted together, the elastic contact piece and the static contact piece are arranged on the base, the threading window is opened on the upper cover, and the conductive extension arm is connected to the upper cover.
[0018] In some embodiments, the terminal switch further includes an indicator light, and two power supply ends of the indicator light are connected to the elastic contact piece and the conductive extension arm through a first power supply connector and a second power supply connector, respectively.
[0019] The embodiments of the present application have at least the following beneficial effects:
[0020] The terminal switch provided in the embodiment of the present application includes a push button switch and a first terminal. A wire threading window is provided on the shell of the push button switch, which is opposite to the first wiring cavity of the first terminal, so as to cooperate in realizing the wire plugging operation; and a first shielding member is provided on the first terminal, which is spaced apart from the first wire plugging cavity along the moving direction of the first terminal, so that when the first terminal is misplaced, the first shielding member can block the wire threading window to prevent the wire plugging operator from accidentally inserting the conductive member into the wire threading window, thereby improving the electrical connection reliability of the terminal to a certain extent and reducing the risks of circuit breaking and electricity safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0022] Figure 1 An exploded schematic diagram of a terminal block switch in an embodiment of the present application is shown;
[0023] Figure 2 Shown Figure 1 Schematic diagram of the assembly state of the terminal switch in FIG;
[0024] Figure 3 Shown Figure 1 Schematic diagram of a partial explosion of the terminal switch area;
[0025] Figure 4 Shown Figure 3 Schematic diagram of partial assembly state of terminal block switch;
[0026] Figure 5 Shown Figure 2 Schematic diagram of the internal structure of the terminal block switch;
[0027] Figure 6 Shown Figure 1 Schematic diagram of the upper cover structure of the terminal switch;
[0028] Figure 7 Shown Figure 1 A schematic diagram of the structure of the terminal switch in the separated state of the base and the upper cover;
[0029] Figure 8 Shown Figure 7 Schematic diagram of the assembly state structure of the terminal block switch. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0031] In addition, this application may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.
[0032] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:
[0033] In pushbutton switches equipped with terminal blocks, a terminal block and a crimping stud often work together to compress conductive components such as wires and copper sheets into the terminal block's wiring cavity, achieving a convenient and stable electrical connection. Typically, a wire insertion window is provided in the pushbutton switch housing, aligning with the wiring cavity. To connect a conductive component, the component is directly inserted into the wiring cavity, and then the crimping stud is rotated to press the component against the terminal block.
[0034] However, in some push button switch products, the wire crimping stud is configured as an in-situ rotating part, and the terminal frame is configured as an axially movable part. When waiting for wiring, the terminal frame is easily displaced, causing the wiring cavity and the wire threading window to be misaligned. At this time, there is no terminal frame and wire crimping stud in the wire threading window, but it can accommodate conductive parts such as guides and copper sheets, and can also rotate the wire crimping stud, which makes it easy for conductive parts to be inserted incorrectly and the connection to be unconstrained, which can easily cause circuit breakage and even safety risks of electric shock.
[0035] To this end, an embodiment of the present application provides a terminal switch, which aims to reduce the risk of mis-insertion of conductive parts and failure to connect and tighten to a certain extent, and improve the safety and reliability of the key switch.
[0036] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In some embodiments, the terminal switch is a push-button switch and is equipped with a terminal block for connecting to an external power supply. To reduce the risk of the terminal block shifting and a conductive member being accidentally inserted into the threading window when the threading window is vacant, the terminal block can be structurally designed to block the threading window in the event of a terminal block shifting, thereby preventing the conductive member from being accidentally inserted.
[0037] Specifically, the terminal switch can be configured as a push button switch and includes a first terminal 91 , which is connected to a conductive structure in the push button switch and is connected to external conductive parts such as wires and copper sheets.
[0038] Generally speaking, the key switch can adopt a typical key switch based on the principle framework of a ratchet key mechanism 2 , an elastic contact piece 3 and a static contact piece 4 .
[0039] Specifically, the key switch may include a housing 1 , and a ratchet key mechanism 2 , an elastic contact piece 3 , and a static contact piece 4 arranged on the housing 1 .
[0040] The elastic contact piece 3 is positionally matched with the static contact piece so that the elastic contact piece 3 can be detachably connected to the static contact piece 4, that is, the elastic contact piece 3 can be deformed to approach the static contact piece 4 and can also be deformed away from the static contact piece 4 to disconnect the electrical connection.
[0041] The ratchet button mechanism 2 can abut against the free end 32 of the elastic contact piece 3, and is used to drive the free end 32 to swing along a set trajectory by pressing the ratchet button mechanism 2, connecting or leaving the static contact piece 4, and through the self-locking ability of the ratchet button mechanism 2, maintain the position of the free end 32, that is, maintain the connection state or disconnection state of the elastic contact piece 3 and the static contact piece 4, thereby realizing the key switch function.
[0042] The first wiring terminal 91 is movably arranged on the shell 1. A first wire insertion cavity 911a is opened on the first wiring terminal 91. A wire threading window 19 is provided on the shell 1. The first wire insertion cavity 911a matches the wire threading window 19, so that conductive parts such as wires and copper sheets can be inserted and then locked and tightened.
[0043] It is worth noting that the wire threading window 19 cannot move, and the first wire insertion cavity 911a will move with the first wire insertion terminal 91, so that the wire threading window 19 and the first wire insertion cavity 911a are misaligned. At this time, conductive parts such as wires or copper sheets can still be inserted into the wire threading window 19, but cannot be inserted into the first wire insertion cavity 911a, resulting in a virtual circuit and unconstrained conductive parts, which causes the conductive structure of the switch to be disconnected, and there is also a certain safety risk of electric shock.
[0044] To this end, a first covering member 911b can be provided on the first connecting terminal 91, and the first covering member 911b and the first wire insertion cavity 911a can be spaced apart along the moving direction of the first connecting terminal 91, so that when the first wire insertion cavity 911a leaves the position aligned with the wire threading window 19, the first covering member 911b will gradually cover the wire threading window, thereby preventing the covering member from being inserted and alerting the assembler.
[0045] Generally speaking, the first covering member 911b can be set close to the edge of the first wire insertion cavity 911a, so that when the first wire insertion cavity 911a is misaligned with the wire threading window 19, the first covering member 911b can at least partially block the wire threading window 19, thereby achieving an efficient and reliable anti-misinsertion effect.
[0046] The terminal switch provided in the embodiment of the present application includes a push button switch and a first terminal. A wire threading window is provided on the shell of the push button switch, which is opposite to the first wiring cavity of the first terminal, so as to cooperate in realizing the wire plugging operation; and a first shielding member is provided on the first terminal, which is spaced apart from the first wire plugging cavity along the moving direction of the first terminal, so that when the first terminal is misplaced, the first shielding member can block the wire threading window to prevent the wire plugging operator from accidentally inserting the conductive member into the wire threading window, thereby improving the electrical connection reliability of the terminal to a certain extent and reducing the risks of circuit breaking and electricity safety.
[0047] See also Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 In some embodiments, considering that the first shielding member 911b is located to move following the first terminal 91 and the first shielding member 911b should have a certain height, a first avoidance hole 191 can be opened on the shell 1 to stabilize the posture of the first shielding member 911b and avoid interference, collision, and the risk of jamming.
[0048] In some embodiments, taking into account the diverse shapes of conductive parts, such as wires, copper sheets, special-shaped conductive material parts, etc., and when the conductive parts are inserted, they first pass through the threading window 19, in order to avoid the conductive parts being incorrectly positioned or skewed in the first wire insertion cavity 911a, which affects the reliability and stability of the electrical connection.
[0049] A guide frame 192 can be set on the outside of the threading window 19, so that various forms of conductive parts can be corrected and positioned to a certain extent before entering the threading window 19 and the first wire insertion cavity 911a, and their posture can be adjusted. This helps to improve the position and posture of the conductive parts in the first wire insertion cavity 911a.
[0050] Generally speaking, the inner wall surface of the first guide frame 192 is roughly flush with the surrounding side wall of the first wire insertion cavity 911a, achieving a smooth connection, so that the conductive component can be smoothly inserted.
[0051] In some embodiments, considering that the shell 1 is usually thin and the thickness of the threading window 19 is also thin, it is difficult to directly process the guide structure using the shell 1. The guide frame 192 can be set to a thickened structure protruding from the shell 1 to form a guide structure with a certain thickness to achieve guidance of the conductive part.
[0052] In some embodiments, the guide frame 19 may be disposed around the threading window 19 .
[0053] Generally speaking, the guide frame 19 can be directly formed on the housing 1 through an injection molding process.
[0054] In some embodiments, the first shielding member 911b can be configured as a plate-shaped member, thereby providing a large shielding range and simplifying the molding difficulty.
[0055] In some embodiments, the first terminal 91 may include a first terminal frame 911 and a first wire-pressing stud 912, the first terminal frame 911 is movably arranged on the shell 1, and the first wire-insertion cavity 911a is arranged in the first terminal frame 911; the first wire-pressing stud 912 is rotatably connected to the shell 1 in situ, and the first wire-pressing stud 912 is screwed to the first terminal frame 911, so that the first terminal frame 911 can be driven to move axially along the first wire-pressing stud 912 by rotating the first wire-pressing stud 912 to tighten or release the conductive part located in the first wire-insertion cavity 911a.
[0056] Generally speaking, the axial direction of the first crimping screw 912 is arranged along the moving direction of the first terminal frame 911. A first limiting hole 16 is opened on the housing 1, and the first crimping screw 912 is rotatably arranged in the first limiting hole 16.
[0057] In some embodiments, in order to achieve rotation of the first crimping stud 912 , the first crimping stud 912 may be configured as a headed bolt, that is, a first bolt head 912 a is provided on a side of the first crimping stud 912 away from the first terminal frame 911 .
[0058] In some embodiments, in order to realize the in-situ rotation of the first wire-pressing stud 912, a limiting groove 17 can be set on the shell 1, and the limiting groove 17 is set on the side of the first limiting hole 16 away from the first terminal frame 911. A stopping spring piece 18 is set in the limiting groove 17, and the first bolt head 912a is set in the limiting groove 17, and the stopping spring piece 18 is blocked on the side of the first bolt head 912a away from the first wire-pressing stud 912. The diameter of the first bolt head 912a can be larger than the diameter of the first limiting hole 16, so that the first bolt head 912a can be limited in the limiting groove 17, thereby limiting the axial position of the first wire-pressing stud 912 and stably driving the first terminal frame 911 to move.
[0059] Generally speaking, the limiting groove 17 can be set on the outer surface of the shell 1 to facilitate the installation of the first wire-pressing stud 912.
[0060] It is worth noting that when installing the first pressing stud 912 , the stopping spring piece 18 can be directly lifted up. After the first pressing stud 912 is installed, the stopping spring piece 18 is released and the stopping spring piece 18 can be naturally reset.
[0061] In some embodiments, the covering position of the stop spring piece 18 can be matched with the position of the first bolt head 912a, so that the stop spring piece 18 can stably cover the edge position of the first bolt head 912a, ensuring the stability and reliability of the stopping function.
[0062] When installing the first pressing stud 912 , the first pressing stud 912 can be directly pressed in. After the first pressing stud 912 passes through, the stopping spring 18 can be naturally reset.
[0063] In some embodiments, the stopping spring piece 912 may be provided in plurality and spaced apart along the circumferential direction of the inner wall of the limiting groove 17 , thereby improving the stopping reliability.
[0064] Generally speaking, the stopping spring 18 can be directly formed on the housing 1 .
[0065] In some embodiments, the limiting groove 17 and the first limiting hole 16 are coaxially arranged and connected.
[0066] In some embodiments, a guide groove 15 can be opened on the shell 1, the first terminal frame 911 can be movably set in the guide groove 15, the wire threading window 19 is opened on a side wall of the guide groove 15, and the port direction of the first wire insertion cavity 911a in the first terminal frame 911 is orthogonal to the moving direction of the first terminal frame 911.
[0067] Generally speaking, the first terminal frame 911 can be configured as a cylindrical piece, the cylindrical cavity constitutes the first wire insertion cavity 911a, and the port is matched and aligned with the wire threading window 19 for communication.
[0068] That is to say, the moving direction of the cylindrical member is perpendicular to the axial direction of the cylindrical member, and a threaded hole 911 c is provided on the cylindrical wall of the cylindrical member, which is threadedly connected to the first wire-pressing stud 912 .
[0069] Typically, the first terminal frame 911 is made of conductive material.
[0070] In some embodiments, in order to match the connection to the neutral line and to supply power to the electrical components connected to the key switch, a second terminal 92 may be provided in the terminal switch.
[0071] The second wiring terminal 92 is movably disposed on the housing 1 , and its structure and installation method are the same as those of the first wiring terminal 91 .
[0072] That is, the second terminal 92 may include a second terminal frame 921 and a second wire-pressing stud 922 .
[0073] The second terminal frame 921 is movably arranged on the shell 1, and a second wire insertion cavity is opened on the second terminal frame 921; the second wire pressing stud 922 is screwed on the second terminal frame 921, and the second wire pressing stud 922 is rotatably embedded in the second limiting hole opened on the shell 1, and a second bolt head is provided at the end of the second wire pressing stud 922 away from the second terminal frame 921, and the diameter of the second bolt head is larger than the diameter of the second limiting hole.
[0074] In some embodiments, in order to facilitate the connection of electrical components such as indicator lights on the push button switch, a conductive extension arm 923 can be set in the shell 1. The conductive extension arm 923 can be fixed and slidably abut against the second terminal 92 to maintain electrical connection.
[0075] That is, the conductive extension arm 923 can be slidably abutted against the second terminal frame.
[0076] In some embodiments, the housing 1 may include a base 11 and an upper cover 12 , and the base 11 and the upper cover 12 are buckled together to provide installation space for various functional components.
[0077] Generally speaking, the fixed end 31 of the elastic output piece 3 and the static contact piece 4 can be fixed on the base 11 by being snap-fitted, the threading window is opened on the upper cover 12, the guide groove 15 is opened on the upper cover, and the conductive extension arm 923 can be fixed on the upper cover 12.
[0078] In some embodiments, an indicator light 7 may be installed on the terminal switch, and two power supplies of the indicator light 7 are connected to the movable contact piece and the conductive extension arm 923 through a first power connector 71 and a second power connector 72 respectively.
[0079] In some embodiments, the ratchet button mechanism 2 may be composed of a large ratchet 21 , a small ratchet 22 , and a ratchet spring 23 that are sequentially sleeved, that is, a typical ratchet switch principle mechanism.
[0080] In some embodiments, in order to facilitate fixation, a pressing seat 73 can be provided, the indicator light is fixed in the pressing seat 73, and the indicator light 7 is provided as an integrated form of a printed circuit board, and the pressing seat 73 can be connected to the pressing end of the large ratchet 21 of the ratchet button mechanism 2.
[0081] Typically, a ratchet seat 13 may be formed on the housing 1 , and the large ratchet 21 and the small ratchet 22 may be mounted therein.
[0082] In order to avoid top-heavyness and affect the stability of the ratchet button mechanism 2, a guide column 14 can be provided on the shell 1, and an ear hole 73a can be provided on the pressing seat 73, so that the guide column 14 can be embedded in the ear hole 73a to achieve balance.
[0083] The first power connector 71 and the second power structure 72 may also be configured as conductive springs, which are respectively in contact with the power end of the printed circuit board, the elastic contact piece 3 and the conductive extension arm 923 .
[0084] In some embodiments, one end of the static contact piece 4 can be extended into the first wire insertion cavity 911a in the first terminal frame 911 to achieve contact connection.
[0085] In some embodiments, in order to improve the connection quality, a copper contact, a silver contact or other contact piece may be riveted on the free end 32 to cooperate with the static contact piece 4 to achieve a stable and reliable electrical connection.
[0086] Accordingly, the static contact piece 4 may also be provided with a contact point having good conductive performance.
[0087] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0088] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0089] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0090] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0091] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0092] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.
[0093] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0094] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A terminal switch, characterized in that: include: A key switch comprises a housing and a detachably connected elastic contact piece and a static contact piece, wherein the elastic contact piece and the static contact piece are arranged in the housing, and a threading window is opened on the housing; The first terminal is movably arranged on the shell, and a first wire insertion cavity and a first shielding member are arranged on the first terminal at intervals along the moving direction of the first terminal. One of the first wire insertion cavity and the first shielding member is aligned with the wire threading window, and the first terminal is electrically connected to the static contact piece or the elastic contact piece.
2. The terminal switch according to claim 1, wherein: The shell is provided with a first avoidance hole, and the first shielding member is movably arranged through the first avoidance hole.
3. The terminal switch according to claim 1, wherein: A guide frame is provided outside the threading window, and the inner wall surface of the guide frame is flush with the inner wall surface of the first wire insertion cavity.
4. The terminal switch according to claim 3, wherein: The guide frame is protruded from the surface of the shell.
5. The terminal switch according to claim 1, wherein: The first terminal comprises: A first terminal frame is movably disposed in the housing, the first terminal frame is provided with the first wire insertion cavity, and the first shielding member is disposed on the first terminal frame; The first wire-pressing stud is screwed on the first terminal frame, and the first wire-pressing stud is rotatably embedded in the first limiting hole opened on the shell. The first wire-pressing stud is provided with a first bolt head at one end away from the first terminal frame, and the diameter of the first bolt head is larger than the diameter of the first limiting hole. The axial direction of the first wire-pressing stud is arranged along the moving direction of the first terminal frame.
6. The terminal switch according to claim 5, wherein: A limiting groove is provided on the shell, the bottom of the limiting groove is connected to the first limiting hole, and a stop spring is protruded on the inner wall of the limiting groove. The first bolt head is located in the limiting groove, and the stop spring is blocked on the side of the first bolt head away from the first wire-pressing stud.
7. The terminal switch according to any one of claims 1 to 6, characterized in that: The terminal switch further includes a second terminal, and the second terminal is movably disposed on the housing.
8. The terminal switch according to claim 7, wherein: The terminal switch further includes a conductive extension arm disposed on the housing, wherein the conductive extension arm is in sliding contact with the second terminal.
9. The terminal switch according to claim 8, wherein: The housing comprises a base and an upper cover which are fastened together. The elastic contact piece and the static contact piece are arranged on the base. The threading window is opened on the upper cover. The conductive extension arm is connected to the upper cover.
10. The terminal switch according to claim 8, wherein: The terminal switch further comprises an indicator light, wherein two power supply ends of the indicator light are respectively connected to the elastic contact piece and the conductive extension arm via a first power supply connector and a second power supply connector.