Wiring terminal and switching device
By introducing elastic parts in the terminal, its elastic pre -tightening force is used to solve the problem of loosening the wire due to screw deformation due to screw deformation, which improves the safety of wiring stability and electrical connection.
Patent Information
- Application Number
- CN202323389344.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-12
AI Technical Summary
After long-term use of existing screw-type terminals, the screws are deformed due to mechanical and thermal stress, causing the wires to loosen or fall off, and the stability and safety of the electrical connection are low.
Design a wiring terminal, including wiring boxes, adjustment parts, wiring boards and elastic pieces. By setting elastic pieces on one side of the regulatory part on the wiring board, the elastic deformation ability of elastic parts is used to apply elastic pre -tightening for the wiring board to ensure that the wire is stable between the wiring board and the conductive board.
It improves the wiring stability of the wiring terminal, reduces the risk of loosening or falling off the wire, and enhances the stability and security of the electrical connection.
Smart Images
Figure CN222422351U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of wiring terminals, and in particular to a wiring terminal and a switch device. Background Art
[0002] Terminal blocks are devices used to connect wires or conductors. They are widely used in electrical and electronic equipment and circuits. Terminal blocks come in many different types and forms, including screw terminals, spring terminals, and crimp terminals.
[0003] The existing screw-type terminal blocks drive the conductive plate connected to the screws close to the terminal block arranged at the bottom of the terminal frame by tightening the screws arranged on the terminal frame, thereby clamping the wire between the conductive plate and the terminal block to connect it to other wires or devices.
[0004] However, during long-term use of the above-mentioned screw-type terminal, the screws will be slightly deformed under the action of mechanical stress and thermal stress, resulting in a loose fit with the threaded holes on the terminal frame, which in turn causes the wires to loosen or fall off in the terminal, and the stability and safety of the electrical connection are low. Utility Model Content
[0005] The purpose of the present application is to provide a wiring terminal and a switch device, which can improve the stability of wiring of the wiring terminal and reduce the risk of the wire becoming loose or falling off in the wiring terminal.
[0006] In the first aspect, the embodiment of the present application provides a wiring terminal, including a wiring frame, an adjusting member, a wiring board and an elastic member. The wiring frame is slidably connected to the conductive plate, a threaded hole is provided on the frame wall of the wiring frame, and a positioning portion is provided on the frame wall of the wiring frame that is away from the threaded hole relative to the conductive plate; the adjusting member is threadedly connected to the threaded hole, and the adjusting member is on one side of the conductive plate; the wiring board is slidably arranged in the wiring frame, and the wiring board is arranged on the side of the conductive plate away from the adjusting member; the elastic member is installed on the positioning portion, the first side of the elastic member abuts against the frame wall of the wiring frame, and the second side of the elastic member abuts against the wiring board; the relative sliding of the wiring board and the wiring frame compresses the elastic member, and the sliding range of the wiring board is smaller than the elastic deformation range of the elastic member.
[0007] Based on the above-mentioned embodiments of the present application, the wiring frame is the main body of the adjusting member, the wiring board and the elastic member, and the conductive plate can slide relative to the wiring frame in the wiring frame. The adjusting member can make the conductive plate and the wiring board move closer to or farther away from each other during the adjustment process to achieve the connection or disconnection between the wiring terminal and the external wire. By arranging the elastic member on the side of the wiring board away from the adjusting member, the elastic deformation ability of the elastic member can be used to apply an elastic preload force to the wiring board. The direction of the elastic preload force is opposite to the direction of the pressure applied by the adjusting member, so that the wiring board can move in the direction of the adjusting member under the action of the elastic preload force. Even if the adjusting member becomes loose during use, the wiring board can stably clamp the wire between the wiring board and the conductive plate under the action of the elastic preload force, ensuring that the wire will not be separated from the wiring terminal due to the loosening of the adjusting member, thereby improving the wiring stability of the wiring terminal.
[0008] In some examples, the positioning portion is configured as a positioning boss, the elastic member is configured as a spring washer, the spring washer is sleeved on the positioning boss, and the height of the positioning boss is smaller than the free height of the spring washer.
[0009] Based on the above-mentioned embodiments of the present application, the positioning portion is set as a positioning boss, which has a simple structure and is easy to process on the wiring frame. The elastic member is selected from a spring washer that matches the size of the positioning boss. On the premise of providing sufficient elastic pre-tightening force for the terminal board, it is easy to adapt to the positioning boss and install it. It is also easy to replace in time, and the assembly operation is less difficult, avoiding the use of the terminal due to failure of the spring washer.
[0010] In some examples, a distance between a top surface of the positioning boss and the wiring board is smaller than a thickness of the spring washer.
[0011] Based on the above-mentioned embodiments of the present application, by limiting the distance between the top surface of the positioning boss and the terminal block to be smaller than the thickness of the spring washer, the spring washer can be prevented from detaching from the terminal through the gap between the positioning boss and the terminal block, thereby ensuring the assembly stability of the spring washer.
[0012] In some examples, a sliding limit hole is opened on the side wall of the wiring frame, and a limit column is arranged on the wiring board, and the limit column can slide in the sliding limit hole along the movable direction of the adjusting member.
[0013] Based on the above-mentioned embodiments of the present application, the combination of the limiting column and the sliding limiting hole facilitates the smooth sliding of the terminal block in the terminal frame. The limiting effect of the sliding limiting hole on the terminal block can indirectly limit the gap between the terminal block and the positioning boss, thereby preventing the spring washer from detaching from between the terminal block and the positioning boss.
[0014] In some examples, the wall of the sliding limit hole close to the positioning boss is a first wall, the frame wall of the wiring frame setting the positioning boss is a second wall, and the distance between the first wall and the second wall is less than or equal to the thickness of the spring washer.
[0015] Based on the above-mentioned embodiments of the present application, by limiting the distance between the first wall and the second wall to be less than or equal to the thickness of the spring washer, the terminal block can completely compress the spring washer before contacting the lower bottom wall of the sliding limit hole. At this time, the terminal block can be subjected to the maximum elastic preload force provided by the spring washer, so that the clamping force applied to the wire between the conductive plate and the terminal block is greater, which is beneficial to improving the wiring stability of the terminal.
[0016] In some examples, the wiring board is provided with a plurality of protrusions, and the plurality of protrusions are arranged at intervals on a side of the wiring board away from the spring washer. In addition, the wiring board is also provided with a plurality of grooves, which are opened on a side of the wiring board close to the spring washer and correspond to the plurality of protrusions one by one.
[0017] Based on the above-mentioned embodiments of the present application, the setting of the protrusion can increase the stability of the wiring of the terminal block itself, and can increase the friction between the wire and the terminal block during wiring, so that the wire cannot easily slip off the terminal block, further improving the wiring stability of the terminal. The groove is set on the side of the terminal block close to the spring washer to correspond to the setting position of the protrusion, avoiding the excessive thickness of the protrusion causing the terminal block to bend partially, thereby reducing the impact on the wiring stability.
[0018] In some examples, the positioning portion is configured as a positioning groove, the spring washer is partially located in the positioning groove, and the distance between the wall of the positioning groove configured by the wiring frame and the wiring board is smaller than the free height of the spring washer.
[0019] Based on the above-mentioned embodiments of the present application, setting the positioning portion as a positioning groove can play the same role as the positioning boss, and has a simple structure and is easy to be processed and formed on the wiring frame. The spring washer can be embedded in the positioning groove to limit the spring washer through the positioning groove, which is convenient for disassembly and replacement of the spring washer, and the structural stability is relatively high.
[0020] In some examples, the positioning portion is configured as a positioning boss or a positioning groove, the positioning boss is stamped on the frame wall corresponding to the wiring frame, or the positioning boss is welded to the wall surface corresponding to the wiring frame. The positioning groove is stamped on the frame wall corresponding to the wiring frame, or the positioning groove is cut and formed on the wall surface corresponding to the wiring frame.
[0021] Based on the above-mentioned embodiments of the present application, the positioning boss or positioning groove is processed in the wiring frame by an integrated stamping method, which has the advantages of simple operation and low processing cost, and can ensure the overall structural stability of the wiring frame. Similarly, the positioning boss can be set as a raised structure welded on the wiring frame, which has high structural stability. Of course, it can also be connected to the wiring frame by clamping or bonding to meet the stability of the wiring terminal. The positioning boss or positioning groove made by the above processing method can ensure the structural stability of the wiring frame on the premise of meeting the positioning spring washer, and avoid affecting the wiring stability of the wiring terminal.
[0022] In a second aspect, an embodiment of the present application further provides a switching device, comprising a housing, a conductive plate and the above-mentioned wiring terminal, wherein the wiring terminal is installed in the housing, and the conductive plate is installed in the housing and extends into a wiring frame of the wiring terminal.
[0023] Based on the above-mentioned embodiments of the present application, the switching device with the above-mentioned wiring terminals improves the stability of connecting external wires, avoiding loose electrical connections at the wiring terminals that may cause damage to the switching device and electrical equipment in the circuit where the switching device is located. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 A schematic diagram of the structure of the wiring terminal in the unconnected state provided in the embodiment of the present application;
[0026] Figure 2 A schematic diagram of the structure of the wiring frame provided in the embodiment of the present application;
[0027] Figure 3 A schematic diagram of a structure in which an elastic member provided in an embodiment of the present application is installed on a positioning portion;
[0028] Figure 4 A schematic diagram of the structure of the wiring terminal provided in the embodiment of the present application;
[0029] Figure 5 Provided for the embodiments of this application Figure 4 Sectional view at point A;
[0030] Figure 6 A structural diagram of the matching state between the wiring board provided in the embodiment of the present application and the elastic member in the wiring frame;
[0031] Figure 7 A structural schematic diagram of the wiring status of the wiring terminals provided in an embodiment of the present application.
[0032] Description of reference numerals:
[0033] 1-wiring frame; 11-threaded hole; 12-positioning boss; 13-sliding limit hole; 131-first wall; 14-second wall; 2-screw; 3-wiring board; 31-limiting column; 32-protrusion; 33-groove; 4-spring washer; 5-conductive plate. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0037] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does 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 cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0038] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0039] Please refer to Figures 1 to 7 The present embodiment provides a wiring terminal, including a wiring frame 1, an adjusting member, a wiring board 3 and an elastic member. The wiring frame 1 is slidably connected to the conductive plate 5, a threaded hole 11 is provided on the frame wall of the wiring frame 1, and a positioning portion is provided on the frame wall of the wiring frame 1 that is away from the threaded hole 11 relative to the conductive plate 5; the adjusting member is threadedly connected to the threaded hole 11, and the adjusting member is on one side of the conductive plate 5; the wiring board 3 is slidably arranged in the wiring frame 1, and the wiring board 3 is arranged on the side of the conductive plate 5 away from the adjusting member; the elastic member is installed on the positioning portion, the first side of the elastic member abuts against the frame wall of the wiring frame 1, and the second side of the elastic member abuts against the wiring board 3; the relative sliding of the wiring board 3 and the wiring frame 1 compresses the elastic member, and the sliding range of the wiring board 3 is smaller than the elastic deformation range of the elastic member.
[0040] Based on the above-mentioned embodiment of the present application, the wiring frame 1 is the bearing body of the adjusting member, the wiring board 3 and the elastic member, and the conductive plate 5 can slide relative to the wiring frame 1 in the wiring frame 1. The adjusting member can make the conductive plate 5 close to or away from the wiring board 3 during the adjustment process to achieve the connection or separation between the wiring terminal and the external wire. By arranging the elastic member on the side of the wiring board 3 away from the adjusting member, the elastic deformation ability of the elastic member can be used to apply an elastic preload force to the wiring board 3. The direction of the elastic preload force is opposite to the direction of the pressure applied by the adjusting member, so that the wiring board 3 can move in the direction of the adjusting member under the action of the elastic preload force. Even if the adjusting member becomes loose during use, the wiring board 3 can stably clamp the wire between the wiring board 3 and the conductive plate 5 under the action of the elastic preload force, ensuring that the wire will not be separated from the wiring terminal due to the loosening of the adjusting member, thereby improving the wiring stability of the wiring terminal.
[0041] The threaded hole 11 provided on the wiring frame 1 facilitates the adjustment of the adjusting member relative to the wiring frame 1 to achieve the compression or loosening of the external wire. The adjusting member can be set as a screw 2 or a bolt. In this example, the adjusting member is set as a screw 2, and the screw 2 is connected to the threaded hole 11 accordingly. When wiring, it is only necessary to turn the screw 2 so that the rod of the screw 2 abuts against the conductive plate 5, and drive the conductive plate 5 to approach the wiring board 3, so that the wire can be clamped between the conductive plate 5 and the wiring board 3, which is convenient to operate.
[0042] The terminal block 3 is slidably arranged in the terminal frame 1 to facilitate its movement toward the conductive plate 5 after being subjected to elastic preload. Compared with the form in which the terminal block 3 is fixed in the terminal frame 1, the slidably arranged terminal block 3 can cooperate with the conductive plate 5 to apply pressure to the wires from their respective directions, thereby improving the connection stability of the wires in the terminal frame 1.
[0043] The elastic member is installed on the positioning portion of the wiring frame 1 opposite to the screw 2. It can be elastically deformed under pressure during the process of tightening the screw 2 to compress the wire. Accordingly, the tendency of the elastic member to restore the deformation produces an elastic pre-tightening force on the wiring board 3, so that the wiring board 3 is subjected to a thrust in the opposite direction to the pressure applied by the screw 2. In this state, the wire can be stably clamped between the conductive plate 5 and the wiring board 3 to prevent the wire from easily detaching from between the wiring board 3 and the conductive plate 5.
[0044] It should be noted that the elastic member can be set as a spring, a spring washer 4, an elastic gasket or other parts with elastic deformation ability and strength adapted to the current use scenario. The above elastic member can be pressed in the wiring frame 1 when the terminal is in the wiring state for a long time, and can restore part of the elastic deformation after the screw 2 is loosened, so as to generate elastic pre-tightening force on the terminal block 3, so as to avoid the unstable electrical connection of the terminal due to the loosening of the screw 2 in the long-term use state, and reduce the risk of electricity use caused by unstable electrical connection. For example, when the elastic member is set as a spring, the two ends of the spring respectively abut the positioning part and the terminal block 3. During the wiring process, the terminal block 3 is subjected to the pressure transmitted by the screw 2 and then compresses the spring to deform. When the screw 2 is loose in the threaded hole 11, the pressure on the terminal block 3 by the screw 2 is reduced, and the spring restores part of the elastic deformation, so that the terminal block 3 can be pushed in the direction of the screw 2, so that the terminal block 3 and the conductive plate 5 are always kept in a compressed state to prevent the wire from being detached.
[0045] Reference Figures 1 to 5 In some examples, the positioning portion is configured as a positioning boss 12 , the elastic member is configured as a spring washer 4 , the spring washer 4 is sleeved on the positioning boss 12 , and the height e of the positioning boss 12 is less than the free height a of the spring washer 4 .
[0046] Based on the above-mentioned embodiments of the present application, the positioning portion is set as a positioning boss 12, which has a simple structure and is easy to be processed on the wiring frame 1. The elastic member selects a spring washer 4 whose size matches the positioning boss 12. On the premise of providing sufficient elastic pre-tightening force to the terminal block 3, it is easy to adapt to the positioning boss 12 and install. It is also easy to replace in time, and the assembly operation is less difficult, avoiding the use of the terminal block affected by the failure of the spring washer 4.
[0047] The positioning boss 12 can be set as a circular positioning boss 12 whose diameter matches the inner diameter of the spring washer 4. When installing, the spring washer 4 can be placed on the circular positioning boss 12 to achieve the positioning of the spring washer 4. The positioning boss 12 can also be set as an annular positioning boss 12 whose inner diameter matches the outer diameter of the spring washer 4. When installing, the spring washer 4 can be placed in the annular positioning boss 12 to achieve the positioning of the spring washer 4.
[0048] Regardless of whether the positioning boss 12 is set as a circular positioning boss 12 or an annular positioning boss 12, the height e of the positioning boss 12 needs to be smaller than the free height a of the spring washer 4, so that during the wiring process, the terminal block 3 can contact and squeeze the spring washer 4, thereby obtaining the elastic preload force provided by the spring washer 4, so that the wire can be clamped in the wiring frame 1 with the cooperation of the screw 2 and the conductive plate 5.
[0049] The free height a of the spring washer 4 refers to the height of the spring washer 4 itself when no external force is applied, that is, the height of the spring washer 4 when placed horizontally. The height e of the positioning boss 12 is set to be smaller than the free height a of the spring washer 4, which can ensure that the terminal block 3 can contact the spring washer 4 and can squeeze the spring washer 4 to make the spring washer 4 elastically deformed, thereby ensuring that the terminal block 3 can be subjected to the elastic preload force applied in the opposite direction by the spring washer 4.
[0050] Furthermore, the height e of the positioning boss 12 can be set to be less than or equal to the thickness b of the spring washer 4, so that during the wiring process, the terminal block 3 can squeeze the spring washer 4 and fully compress the spring washer 4. At this time, the terminal block 3 can obtain the maximum elastic preload force provided by the spring washer 4, further improving the wiring stability.
[0051] Reference Figure 5 In some examples, the distance d between the top surface of the positioning boss 12 and the terminal block 3 is smaller than the thickness b of the spring washer 4 .
[0052] Based on the above-mentioned embodiments of the present application, by limiting the distance d between the top surface of the positioning boss 12 and the terminal block 3 to be smaller than the thickness b of the spring washer 4, the spring washer 4 can be prevented from detaching from the terminal through the gap between the positioning boss 12 and the terminal block 3, thereby ensuring the assembly stability of the spring washer 4.
[0053] The thickness b of the spring washer 4 usually refers to the shortest distance between the lower side and the upper side when the spring washer 4 is placed horizontally, and the distance from the top surface of the positioning boss 12 to the terminal block 3 is the shortest distance between the side of the terminal block 3 close to the positioning boss 12 and the top surface of the positioning boss 12 when the terminal block 3 slides to the farthest distance from the positioning boss 12. This setting can prevent the spring washer 4 from being detached from the positioning boss 12 and the terminal block 3 due to external force or shaking when the terminal block is in an unconnected state, thereby improving the assembly stability of the terminal block.
[0054] Reference Figure 1 , Figure 2 and Figure 6 In some examples, a sliding limit hole 13 is provided on the side wall of the wiring frame 1, and a limit column 31 is provided on the wiring board 3. The limit column 31 can slide in the sliding limit hole 13 along the movable direction of the adjusting member.
[0055] Based on the above-mentioned embodiments of the present application, the matching form of the limiting column 31 and the sliding limiting hole 13 is adopted to facilitate the smooth sliding of the terminal block 3 in the terminal frame 1. The limiting effect of the sliding limiting hole 13 on the terminal block 3 can indirectly limit the gap between the terminal block 3 and the positioning boss 12, thereby preventing the spring washer 4 from detaching from between the terminal block 3 and the positioning boss 12.
[0056] The sliding direction of the terminal block 3 is subject to the bidirectional action of the screw 2 and the spring washer 4. When wiring, the terminal block 3 can slide in the direction of the positioning boss 12 under the pressure transmitted by the screw 2 to compress the spring washer 4 to deform. When the screw 2 is loose, the terminal block 3 moves in the direction of the screw 2 under the elastic pre-tightening force applied by the spring washer 4 to prevent the wire from detaching from the terminal.
[0057] In this example, there are two sliding limit holes 13, which are correspondingly provided on the two side walls of the wiring frame 1. There are two limit columns 31, which are correspondingly provided on the two side walls of the wiring board 3. The limit columns 31 and the wiring board 3 are in the same plane and correspond one to one with the sliding limit holes 13.
[0058] The corresponding sliding connection between the two limiting holes and the two limiting posts 31 can further improve the sliding stability of the terminal block 3 in the terminal frame 1. The sliding limiting hole 13 can be set as a through hole or a blind hole, and the limiting post 31 is a protrusion arranged on the side of the terminal block 3 and adapted to the sliding limiting post 31. In this example, the sliding limiting hole 13 is set as a through hole. This form is convenient for processing, and it is convenient to observe and adjust the sliding condition of the terminal block 3 in the sliding limiting hole 13, so as to avoid the terminal block 3 being stuck in the sliding limiting hole 13, and the practicality is higher.
[0059] In another example, four sliding limit holes 13 may be provided, and the four sliding limit holes 13 are arranged in groups of two on the two side walls of the wiring frame 1, and the two sliding limit holes 13 in each group are arranged at intervals. Correspondingly, four limit columns 31 are provided, and the four limit columns 31 correspond one by one to the four sliding limit holes 13. This arrangement can make the wiring board 3 more stably slidably connected to the wiring frame 1.
[0060] Reference Figure 5 In some examples, the wall surface of the sliding limit hole 13 close to the positioning boss 12 is the first wall surface 131, the frame wall of the wiring frame 1 on which the positioning boss 12 is set is the second wall surface 14, and the distance c between the first wall surface 131 and the second wall surface 14 is less than or equal to the thickness b of the spring washer 4.
[0061] Based on the above-mentioned embodiments of the present application, by limiting the distance c between the first wall 131 and the second wall 14 to be less than or equal to the thickness b of the spring washer 4, the terminal block 3 can completely compress the spring washer 4 before contacting the lower bottom wall of the sliding limit hole 13. At this time, the terminal block 3 can be subjected to the maximum elastic preload force provided by the spring washer 4, so that the clamping force on the wire between the conductive plate 5 and the terminal block 3 is greater, which is beneficial to improving the wiring stability of the terminal.
[0062] like Figure 5 As shown, when the distance c between the first wall 131 and the second wall 14 is less than the thickness b of the spring washer 4, the terminal block 3 will move downward under the pressure of the screw 2 and will first flatten the spring washer 4 without contacting the lower bottom wall of the sliding limit hole 13, thereby preventing the terminal block 3 from bending due to excessive force on both sides after contacting the hole wall of the sliding limit hole 13, thereby improving the stability of the terminal block 3 in use.
[0063] When the distance c between the first wall 131 and the second wall 14 is equal to the thickness b of the spring washer 4, the terminal block 3 moves downward under the pressure of the screw 2 and abuts against the wall of the sliding limit hole 13 while flattening the spring washer 4. At this time, the force on the terminal block 3 is more uniform and the stability is higher.
[0064] Reference Figure 1 and Figure 6 In some examples, the wiring board 3 is provided with a plurality of protrusions, which are arranged at intervals on a side of the wiring board 3 away from the spring washer 4. In addition, the wiring board 3 is provided with a groove 33 corresponding to the protrusion, and the groove 33 is opened on a side of the wiring board 3 close to the spring washer 4.
[0065] Based on the above-mentioned embodiments of the present application, the setting of the protrusion 32 can increase the stability of the wiring of the terminal block 3 itself, and can increase the friction between the wire and the terminal block 3 during wiring, so that the wire cannot easily slide off the terminal block 3, further improving the wiring stability of the terminal. The groove 33 is set on the side of the terminal block 3 close to the spring washer 4, which can correspond to the setting position of the protrusion 32, avoiding the excessive thickness of the protrusion 32 causing the terminal block 3 to bend partially, thereby reducing the impact on the wiring stability.
[0066] In some examples, the positioning portion is configured as a positioning groove, the spring washer 4 is partially located in the positioning groove, and the distance between the wall of the positioning groove of the wiring frame 1 and the wiring board 3 is smaller than the free height a of the spring washer 4 .
[0067] Based on the above-mentioned embodiments of the present application, setting the positioning portion as a positioning groove can play the same role as the positioning boss 12, and has a simple structure and is easy to be processed and formed on the wiring frame 1. The spring washer 4 can be embedded in the positioning groove to limit the spring washer 4 through the positioning groove, which is convenient for disassembly and replacement of the spring washer 4, and the structural stability is relatively high.
[0068] The positioning groove can be set as a circular positioning groove whose diameter matches the outer diameter of the spring washer 4. When installing, the spring washer 4 can be embedded in the circular positioning groove to achieve the positioning of the spring washer 4. The positioning groove can also be set as an annular positioning groove that matches both the inner diameter and the outer diameter of the spring washer 4. When installing, the spring washer 4 can be embedded in the annular positioning groove to achieve the positioning of the spring washer 4.
[0069] Regardless of whether the positioning groove is set as a circular positioning groove or an annular positioning groove, the depth of the positioning groove needs to be less than the free height a of the spring washer 4, so that during the wiring process, the terminal block 3 can contact and squeeze the spring washer 4, thereby obtaining the elastic preload force provided by the spring washer 4, so that the wire can be clamped in the wiring frame 1 with the cooperation of the screw 2 and the conductive plate 5.
[0070] Furthermore, the depth of the positioning groove can be set to be less than or equal to the thickness b of the spring washer 4, so that during the wiring process, the terminal block 3 can squeeze the spring washer 4 and fully compress the spring washer 4. At this time, the terminal block 3 can obtain the maximum elastic preload force provided by the spring washer 4, further improving the wiring stability.
[0071] In some examples, the positioning portion is configured as a positioning boss 12 or a positioning groove, and the positioning boss 12 is stamped on the frame wall corresponding to the wiring frame 1, and the positioning boss 12 can also be welded to the wall surface corresponding to the wiring frame 1; the positioning groove is stamped on the frame wall corresponding to the wiring frame 1, and the positioning groove can also be cut on the wall surface corresponding to the wiring frame 1.
[0072] Based on the above-mentioned embodiments of the present application, the positioning boss 12 or positioning groove is processed in the wiring frame 1 by an integrated stamping method, which has the advantages of simple operation and low processing cost, and can ensure the overall structural stability of the wiring frame 1. Similarly, the positioning boss 12 can be set as a protrusion 32 structure welded on the wiring frame 1, which has a high structural stability. Of course, it can also be connected to the wiring frame 1 by a clamping or bonding method to meet the stability of the terminal. The positioning boss 12 or positioning groove made by the above processing method can ensure the structural stability of the wiring frame 1 on the premise of meeting the positioning spring washer 4, and avoid affecting the wiring stability of the terminal.
[0073] Reference Figure 7 The embodiment of the present application also provides a switching device, including a housing, a conductive plate 5 and the above-mentioned wiring terminal, the wiring terminal is installed in the housing, and the conductive plate 5 is installed in the housing and extends into the wiring frame 1 of the wiring terminal.
[0074] Based on the above-mentioned embodiments of the present application, the switching device with the above-mentioned wiring terminals improves the stability of connecting external wires, avoiding loose electrical connections at the wiring terminals that may cause damage to the switching device and electrical equipment in the circuit where the switching device is located.
[0075] The wiring terminal is installed at the wiring position of the shell, and the conductive plate 5 arranged in the shell extends into the wiring frame 1 of the wiring terminal. The adjusting member in the wiring terminal can drive the conductive plate 5 to press the wire connected to the wiring frame 1 between the conductive plate 5 and the wiring board 3. The spring washer 4 arranged under the wiring board 3 applies an elastic preload force to the wiring board 3 in the opposite direction to the pressure applied by the adjusting member, thereby ensuring that the wire will not fall out of the wiring terminal due to the loosening of the adjusting member, effectively reducing the risk of circuit failure caused by unstable electrical connection.
[0076] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A terminal block, characterized in that: include: A wiring frame is slidably connected to the conductive plate, a threaded hole is provided on a frame wall of the wiring frame, and a positioning portion is provided on a frame wall of the wiring frame that is away from the threaded hole relative to the conductive plate; An adjusting member, threadedly connected to the threaded hole, wherein the adjusting member is located on one side of the conductive plate; A wiring board, slidably disposed in the wiring frame, the wiring board being disposed on a side of the conductive plate away from the adjusting member; An elastic member is mounted on the positioning portion, a first side of the elastic member abuts against a frame wall of the wiring frame, and a second side of the elastic member abuts against the wiring board; The relative sliding between the wiring board and the wiring frame compresses the elastic member, and the sliding range of the wiring board is smaller than the elastic deformation range of the elastic member.
2. The connection terminal according to claim 1, characterized in that: The positioning portion is configured as a positioning boss, the elastic member is configured as a spring washer, the spring washer is sleeved on the positioning boss, and the height of the positioning boss is smaller than the free height of the spring washer.
3. The connection terminal according to claim 2, characterized in that: The distance between the top surface of the positioning boss and the wiring board is smaller than the thickness of the spring washer.
4. The connection terminal according to claim 3, characterized in that: A sliding limit hole is provided on the side wall of the wiring frame, and a limit column is provided on the wiring board. The limit column can slide in the sliding limit hole along the movable direction of the adjusting member.
5. The connection terminal according to claim 4, characterized in that: The wall surface of the sliding limit hole close to the positioning boss is the first wall surface, the frame wall of the wiring frame on which the positioning boss is set is the second wall surface, and the distance between the first wall surface and the second wall surface is less than or equal to the thickness of the spring washer.
6. The connecting terminal according to any one of claims 2 to 5, characterized in that: The wiring board is provided with a plurality of protrusions, and the plurality of protrusions are arranged at intervals on a side of the wiring board away from the spring washer.
7. The connection terminal according to claim 6, characterized in that: The wiring board is also provided with a plurality of grooves, which are opened on one side of the wiring board close to the spring washer and correspond one to one with the plurality of protrusions.
8. The connection terminal according to claim 2, characterized in that: The positioning portion is configured as a positioning groove, the spring washer is partially located in the positioning groove, and the distance between the wall surface of the positioning groove provided on the wiring frame and the wiring board is smaller than the free height of the spring washer.
9. The connection terminal according to claim 1, characterized in that: The positioning portion is configured as a positioning boss or a positioning groove, and the positioning boss is stamped on a frame wall corresponding to the wiring frame, or the positioning boss is welded to a wall surface corresponding to the wiring frame; The positioning groove is formed by stamping on the frame wall corresponding to the wiring frame, or the positioning groove is formed by cutting on the wall surface corresponding to the wiring frame.
10. A switching device, characterized in that: It comprises a shell, a conductive plate and a wiring terminal as claimed in any one of claims 1 to 9, wherein the wiring terminal is installed in the shell, and the conductive plate is installed in the shell and extends into a wiring frame of the wiring terminal.