Plug-in type wire holder

Abstract

The utility model relates to the field of relays, and particularly discloses a plug-in type wire holder which comprises a base and a wiring unit and a connecting unit which are installed in the base, the wiring unit comprises a wiring piece used for being connected with a wire, an elastic piece used for clamping the wire and a separation key used for pressing the elastic piece, and the end, close to the wiring piece, of the elastic piece is a movable end. The other end of the separating button is a fixed end, and the separating button abuts against the movable end; the connecting unit comprises a connecting terminal for inserting the relay and a connecting sheet connected with the connecting terminal; the base is provided with a mounting cavity for mounting the wiring unit and the connecting unit, the mounting cavity comprises a cavity for swinging of the movable end, a fixing groove for insertion of the fixed end, a connecting groove for insertion of the connecting sheet, an insertion port for insertion of a wire and a pressing port for exposure of the separation key, and the fixing groove, the connecting groove, the insertion port and the pressing port are all communicated with the cavity. According to the plug-in type wire holder, the wire can be quickly assembled and disassembled, and the wiring efficiency is high.

Description

Technical Field

[0001] This application relates to the field of relays, and in particular to a plug-in terminal block. Background Art

[0002] A relay is an electronic control device, usually applied in an automatic control circuit, playing roles such as automatic regulation, safety protection, and circuit conversion. A terminal block is an external accessory of a relay, used to connect wires and the relay. When in use, a power line and a load line are pre-connected to the terminal block, and then the relay is plugged into the terminal block.

[0003] In the related art, the connection method between the terminal block and the relay is a plug-in type for easy installation and disassembly of the relay. The connection method between the terminal block and the wire is as follows: First, the end of the wire is inserted into the relay base, and then the wire is fixed by tightening a screw. Since there are many wire connection points on the terminal block, there are problems such as complicated wire installation process, and it is also easy to have problems of missed wiring and loose wiring, resulting in circuit failures, and even fires in severe cases, which need to be improved. Summary of the Utility Model

[0004] In order to facilitate wire installation and improve safety, this application provides a plug-in terminal block.

[0005] A plug-in terminal block provided by this application adopts the following technical solutions:

[0006] A plug-in terminal block includes a base, a wiring unit and a connection unit installed in the base. The wiring unit includes a wiring piece for connecting a wire, a spring piece for clamping the wire, and a separation button for pressing the spring piece. One end of the spring piece close to the wiring piece is a movable end, and the other end is a fixed end. The separation button abuts against the movable end.

[0007] The connection unit includes a connection terminal for the relay to be inserted and a connection piece connected to the connection terminal.

[0008] The base is provided with an installation cavity for installing the wiring unit and the connection unit. The installation cavity includes a cavity for the movable end to swing, a fixed slot for the fixed end to be inserted, a connection slot for the connection piece to be inserted, an insertion port for the wire to be inserted, and a pressing port for the separation button to be exposed. The fixed slot, the connection slot, the insertion port and the pressing port are all communicated with the cavity. One end of the wiring piece is connected to the connection piece, and the other end is attached to the inner wall of the cavity and faces the movable end. One side inner wall of the pressing port is provided with a limiting part for preventing the separation button from coming out.

[0009] By adopting the above technical solution, during installation, the wire is directly inserted from the insertion port. After the wire pushes open the movable end, it is clamped and fixed by the movable end and the terminal block. When disassembly is required, press the separation button, and the separation button drives the movable end to move away from the wire, facilitating the direct extraction of the wire.

[0010] The plug-in terminal block of the present application can achieve rapid installation and disassembly of wires, with high wiring efficiency.

[0011] Optionally, the base includes a plurality of bases arranged in sequence along the width direction. Each base has an installation cavity, and the installation cavity penetrates through one side wall of the base to form an assembly opening. Adjacent bases are connected by plugging. A housing is snap-connected to the outside of the base. The housing is provided with a connection hole for inserting a relay, a jack for inserting a wire, and an unlocking hole for exposing the separation button.

[0012] By adopting the above technical solution, the base is separately provided, facilitating the wiring unit and the connection unit to be loaded into the installation cavity from the side of the base, with convenient assembly.

[0013] Optionally, the connection units are all arranged in the middle of the base, and the wiring units are distributed on both sides of the base.

[0014] By adopting the above technical solution, the position distribution is appropriate, which is beneficial to controlling the volume of the base.

[0015] Optionally, the base further includes a plurality of connection seats arranged in sequence along the width direction. Each connection seat has an installation cavity, and the installation cavity penetrates through one side wall of the connection seat to form an assembly opening. The connection unit corresponding to the connection seat is used to connect the relay coil. The plurality of connection seats are successively the first connection seat, the second connection seat, and the third connection seat;

[0016] The plurality of bases are successively the first base, the second base, the third base, and the fourth base. The first base is connected to the first connection seat, the second base is connected to the second connection seat, the fourth base is connected to the third connection seat. The assembly openings of the first connection seat, the first base, the second base, the third base, and the fourth base face the same direction. The assembly openings of the first connection seat and the second connection seat face opposite directions. The assembly openings of the second connection seat and the third connection seat face the same direction.

[0017] By adopting the above technical solution, for the special requirements of coil wiring, the connection unit of the common terminal needs to be a two-in-one-out structure. Therefore, the assembly opening directions of different connection seats are optimized to facilitate the assembly.

[0018] Optionally, one end of the fixed groove away from the movable end is communicated with the cavity. The terminal block is provided with a connecting convex block, and the fixed end abuts against one side of the connecting convex block close to the movable end.

[0019] By adopting the above technical solution, the elastic piece can also serve as a conductive path, enabling a dual path to be formed between the wire and the connection terminal, which is beneficial to improving the circuit stability.

[0020] Optionally, the wiring units inside the first connection base and the second connection base are connected to the same connection unit, and the connection unit is an integral unit. The integral unit is made by integrally molding a connection terminal and two connection pieces. Through holes are provided on the opposite sides of the first connection base and the second connection base, and the through holes are opposite to the fixed end.

[0021] By adopting the above technical solution, during assembly, first connect the integral unit with the two wiring units, and install the assembly into the first connection base. Then move the first connection base closer to the second connection base. When one of the wiring units is about to be inserted into the installation cavity of the second connection base, push the fixed end to deform through the through hole, so that the corresponding connection convex block can be inserted between the fixed end and the inner wall of the cavity, thus successfully completing the assembly.

[0022] Optionally, the fixed end does not contact the wiring piece. The wiring units inside the first connection base and the second connection base are connected to the same connection unit, and the connection unit is a plug-in unit. The plug-in unit includes a connection terminal, a first connection piece and a second connection piece. The first connection piece is connected to the connection terminal, and the second connection piece is connected with a plug-in portion that is plugged into the first connection piece.

[0023] By adopting the above technical solution, the neutral line common end is changed to a plug-in structure to facilitate the assembly.

[0024] Optionally, the plug-in portion includes a lower clamping strip and an upper clamping strip. The lower clamping strip and the upper clamping strip are arched towards each other, and the lower clamping strip and the upper clamping strip respectively abut against both sides of the first connection piece.

[0025] By adopting the above technical solution, the contact stability between the first connection piece and the second connection piece is improved.

[0026] Optionally, the connection piece and the wiring piece are integrally molded.

[0027] By adopting the above technical solution, the circuit stability is improved.

[0028] Optionally, a hook for fixing the relay is hinged to the outer shell.

[0029] By adopting the above technical solution, the relay is fixed to prevent accidental detachment.

[0030] In summary, the present application has the following beneficial effects:

[0031] 1. The plug-in wiring base of the present application can realize the rapid installation and disassembly of wires, and has high wiring efficiency;

[0032] 2. The base of the present application is provided in a split manner, facilitating the wiring unit and the connection unit to be inserted into the installation cavity from the side of the base, with convenient assembly;

[0033] 3. The elastic sheet is used to press and connect the wire, improving the wiring reliability and safety, not easily missing wiring or having loose wiring, and effectively preventing electrical fires;

[0034] 4. The wire is installed in a plug-in manner, which is also convenient for visual inspection to ensure correct wiring. Description of the Drawings

[0035] Figure 1 is a schematic structural diagram of the plug-in wiring base according to Embodiment 1 of the present application;

[0036] Figure 2 is an exploded schematic diagram of the plug-in wiring base according to Embodiment 1 of the present application;

[0037] Figure 3 is a front view schematic diagram of the base, wiring unit and connection unit according to Embodiment 1 of the present application;

[0038] Figure 4 is Figure 3 an enlarged schematic diagram of area A in

[0039] Figure 5 is an exploded schematic diagram of the base according to Embodiment 1 of the present application;

[0040] Figure 6 is a schematic structural diagram of the integrated unit and the wiring piece according to Embodiment 1 of the present application;

[0041] Figure 7 is a schematic structural diagram of the base, wiring unit and connection unit according to Embodiment 1 of the present application;

[0042] Figure 8 is an exploded schematic diagram of the plug-in wiring base according to Embodiment 2 of the present application;

[0043] Figure 9 is a front view schematic diagram of the base, wiring unit and connection unit according to Embodiment 2 of the present application;

[0044] Figure 10 is a schematic structural diagram of the plug-in unit and the wiring piece according to Embodiment 2 of the present application.

[0045] Description of reference numerals: 1, base; 11, mounting cavity; 111, cavity; 112, fixing groove; 113, connecting groove; 114, insertion port; 115, pressing port; 12, assembly opening; 13, limiting portion; 14, buckle; 15, through hole; 101, first base; 102, second base; 103, third base; 104, fourth base; 105, first connecting base; 106, second connecting base; 107, third connecting base;

[0046] 2. Wiring unit; 21. Wiring piece; 211. Connecting bump; 22. Spring piece; 221. Movable end; 222. Fixed end; 23. Separation button;

[0047] 3. Connecting unit; 31. Connecting terminal; 32. Connecting piece; 33. Lower clamping strip; 34. Upper clamping strip; 3a. Integrated unit; 3b. Plug-in unit; 32a. First connecting piece; 32b. Second connecting piece;

[0048] 4. Shell; 41. Connection hole; 42. Plug hole; 43. Unlocking hole; 44. Button hole;

[0049] 5. Hook; 6. Relay. DETAILED DESCRIPTION

[0050] The following is combined with Figures 1 - 10 This application is described in further detail.

[0051] The embodiment of the present application discloses a plug-in terminal block.

[0052] Embodiment 1:

[0053] Reference Figure 1 , Figure 2 , a plug-in terminal block includes a base 1, a terminal block 2 for connecting a wire, a connection unit 3 for connecting a relay 6, a shell 4 snapped to the outside of the base 1, and a hook 5 hinged to the shell 4. The base 1 is split, the shell 4 is used to restrain the base 1, and the hook 5 is used to hook the relay 6 to ensure that the relay 6 is stably plugged into the terminal block. The terminal block 2 and the connection unit 3 are both installed inside the base 1, the connection unit 3 is set in the middle of the base 1, and the terminal blocks 2 are distributed on both sides of the base 1, so the upper end of the middle of the terminal block is used to plug in the relay 6, and the upper ends of both sides are used for wiring.

[0054] Reference Figure 3 , Figure 4 The wiring unit 2 includes a wiring piece 21 for connecting the wire, a spring piece 22 for clamping the wire, and a separation button 23 for pressing the spring piece 22. The spring piece 22 is V-shaped and one end close to the wiring piece 21 is a movable end 221, and the other end is a fixed end 222.

[0055] The connection unit 3 includes connection terminals 31 for inserting the relay 6, and connection pieces 32 fixedly connected to the connection terminals 31. The connection pieces 32 are connected to the connection tabs 21.

[0056] Refer to Figure 3 , Figure 4 , the base 1 is provided with an installation cavity 11 for installing the wiring unit 2 and the connection unit 3. The installation cavity 11 includes a cavity 111 for the movable end 221 to swing, a fixing slot 112 for inserting the fixed end 222, a connection slot 113 for inserting the connection piece 32, an insertion port 114 for inserting a wire, and a pressing port 115 for exposing the separation button 23. The fixing slot 112, the connection slot 113, the insertion port 114, and the pressing port 115 are all communicated with the cavity 111.

[0057] One end of the connection tab 21 is close to the insertion port 114 and cooperates with the elastic piece 22 to clamp the wire. The other end extends into the connection slot 113 and is fixedly welded to the connection piece 32. One end of the connection tab 21 close to the insertion port 114 fits against the inner wall of the cavity 111. The movable end 221 is facing the insertion port 114. Therefore, after the wire is inserted, it can act on the movable end 221, and then push the movable end 221 to swing away from the connection tab 21 until the wire is completely inserted, and the movable end 221 and the connection tab 21 clamp the wire. Since the movable end 221 cannot be driven to swing when the wire is pulled out, the wire is well fixed and the wiring is stable.

[0058] Refer to Figure 3 , Figure 4 , the separation button 23 abuts against the movable end 221, and the separation button 23 is slidably arranged in the pressing port 115. Therefore, after the separation button 23 is pressed, it can drive the movable end 221 away from the connection tab 21, and then it is convenient to pull out the wire. In order to prevent the separation button 23 from detaching from the base 1, the inner wall of the pressing port 115 close to the insertion port 114 is provided with a limiting portion 13 for blocking the separation button 23 from coming out. The limiting portion 13 is provided in a stepped shape. When the separation button 23 is pushed by the movable end 221 until it abuts against the limiting portion 13, it cannot move outward any further.

[0059] Refer to Figure 3 , Figure 4 , the end of the fixing slot 112 far from the movable end 221 is communicated with the cavity 111. The connection tab 21 is integrally formed with a connection convex block 211. The connection convex block 211 is close to the fixed end 222, and the fixed end 222 abuts against the side of the connection convex block 211 close to the movable end 221. The elastic piece 22 uses its own elastic force to tightly press against the connection convex block 211 to form a second conductive path, so that a double path is formed between the wire and the connection terminal 31, which is beneficial to improving the circuit stability.

[0060] Refer to Figure 2 , Figure 5, the base 1 includes four pedestals arranged in sequence along the width direction and three connecting seats arranged in sequence along the width direction. Each pedestal has three mounting cavities 11, and each connecting seat has one mounting cavity 11 for installing the corresponding connecting unit 3 and wiring unit 2. The mounting cavity 11 penetrates through one side wall of the pedestal or the connecting seat to form an assembly opening 12, so that the wiring unit 2 and the connecting unit 3 can be loaded into the mounting cavity 11 from the side, and the assembly is convenient and stable. The adjacent pedestals are connected by plugging, and the plugging structure is a cooperation mode of a plug and a slot.

[0061] It should be noted that, different from the pedestal, the three wiring units 2 and connecting units 3 correspondingly installed on the connecting seat are used to connect the relay coil.

[0062] Refer to Figure 2 , on the opposite sides of the pedestals located on both sides, buckles 14 are fixedly connected. The housing 4 is provided with buckle holes 44 for the buckles 14 to be inserted into, so as to facilitate the assembly of the housing 4 and bind and fix the split base 1. The housing 4 is also provided with a connection hole 41 for the relay 6 to be inserted into, a jack 42 for the wire to be inserted into, and an unlocking hole 43 for the separation button 23 to be exposed. The connection hole 41 is directly opposite to the connection terminal 31, the jack 42 is directly opposite to the insertion port 114, and the unlocking hole 43 is directly opposite to the separation button 23.

[0063] Refer to Figure 5 , the four pedestals are the first pedestal 101, the second pedestal 102, the third pedestal 103 and the fourth pedestal 104 in sequence, and the three connecting seats are the first connecting seat 105, the second connecting seat 106 and the third connecting seat 107 in sequence. The first pedestal 101 and the first connecting seat 105 are integrally formed, the second pedestal 102 and the second connecting seat 106 are integrally formed, and the fourth pedestal 104 and the third connecting seat 107 are integrally formed.

[0064] The assembly openings 12 of the first connecting seat 105, the first pedestal 101, the second pedestal 102, the third pedestal 103 and the fourth pedestal 104 face the same direction. The assembly openings 12 of the first connecting seat 105 and the second connecting seat 106 are arranged oppositely, and the assembly openings 12 of the second connecting seat 106 and the third connecting seat 107 face the same direction.

[0065] It should be noted that the wiring units 2 and connecting units 3 correspondingly installed on the first connecting seat 105 and the second connecting seat 106 are used to connect the common end of the relay coil. For the special requirements of coil wiring, the connecting unit 3 of the common end needs to be a two-in-one-out structure. Therefore, the orientation of the assembly openings 12 of different connecting seats is optimized to facilitate the assembly.

[0066] Refer to Figure 6, the wiring unit 2 located inside the first connecting seat 105 and the second connecting seat 106 is connected to the same connecting unit 3, and the connecting unit 3 is an integral unit 3a. Except for the integral unit 3a, the remaining connecting units 3 are integrally formed by a connecting terminal 31 and a connecting piece 32, and the integral unit 3a is integrally formed by a connecting terminal 31 and two connecting pieces 32. Therefore, the integral unit 3a is a two-in-one-out conductive structure to adapt to the wiring requirements of the coil common end.

[0067] Referring to Figure 4 , Figure 7 , for the convenience of assembly, through holes 15 are provided on the opposite sides of the first connecting seat 105 and the second connecting seat 106, and the through holes 15 are directly opposite to the fixed end 222. During assembly, first connect the integral unit 3a with the two wiring units 2, and install this assembly into the first connecting seat 105. Then, move the first connecting seat 105 closer to the second connecting seat 106. When one of the wiring units 2 is about to be inserted into the installation cavity 11 of the second connecting seat 106, push the fixed end 222 to deform through the through hole 15, so that the corresponding connecting bump 211 can be inserted between the fixed end 222 and the inner wall of the cavity 111, thus successfully completing the assembly.

[0068] The implementation principle of the plug-in wiring seat in Embodiment 1 is as follows:

[0069] During installation, the wire is directly inserted from the insertion port 114. After the wire pushes away the movable end 221, it is clamped and fixed by the movable end 221 and the wiring piece 21. When disassembly is required, press the separation button 23, and the separation button 23 drives the movable end 221 to move away from the wire, so that the wire can be directly pulled out.

[0070] Embodiment 2

[0071] The difference from Embodiment 1 is that, referring to Figure 8 , Figure 9 , the end of the fixed groove 112 away from the movable end 221 is closed, and the fixed end 222 does not contact the wiring piece 21. The setting of this difference point cancels the second conductive path to facilitate the assembly.

[0072] Referring to Figure 9 , the difference also lies in that the connecting piece 32 and the wiring piece 21 are integrally formed to improve the circuit stability.

[0073] Referring to Figure 9 , the difference also lies in that the shape and structure of the separation button 23 are optimized, the volume is reduced, and the limiting part 13 is correspondingly set to be inclined.

[0074] Referring to Figure 9 , Figure 10, The difference is also that the wiring unit 2 inside the first connector base 105 and the second connector base 106 is connected to the same connection unit 3, and the connection unit 3 is a plug-in unit 3b. Except for the plug-in unit 3b, the remaining connection units 3 are made by integrally molding a connection terminal 31 and a connection piece 32. The plug-in unit 3b is made by a connection terminal 31 and a first connection piece 32a and a second connection piece 32b that are plugged into each other. The first connection piece 32a is integrally molded with the connection terminal 31, and the second connection piece 32b is integrally molded with a plug-in part that is plugged into the first connection piece 32a. The plug-in part includes two lower clamping strips 33 and an upper clamping strip 34. The lower clamping strips 33 and the upper clamping strip 34 are arched towards each other, and the lower clamping strips 33 and the upper clamping strip 34 respectively abut against both sides of the first connection piece 32a.

[0075] Compared with Embodiment 1, the plug-in terminal block of Embodiment 2 has a smaller volume, and the structure of the plastic parts is optimized to make the parts have better strength. In addition, the neutral line common end is changed to a plug-in form for better assembly.

[0076] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plug-in terminal block, comprising a base (1) and a terminal unit (2) and a connection unit (3) installed in the base (1), characterized in that: The wiring unit (2) comprises a wiring piece (21) for connecting a wire, a spring piece (22) for clamping the wire, and a separation button (23) for pressing the spring piece (22); one end of the spring piece (22) close to the wiring piece (21) is a movable end (221), and the other end is a fixed end (222); the separation button (23) abuts against the movable end (221); The connection unit (3) comprises a connection terminal (31) for inserting the relay (6) and a connection piece (32) connected to the connection terminal (31); The base (1) is provided with an installation cavity (11) for installing a wiring unit (2) and a connection unit (3); the installation cavity (11) comprises a cavity (111) for swinging a movable end (221), a fixing groove (112) for inserting a fixed end (222), a connecting groove (113) for inserting a connecting piece (32), an insertion port (114) for inserting a wire, and a pressing port (115) for exposing a separation button (23); the fixing groove (112), the connecting groove (113), the insertion port (114) and the pressing port (115) are all connected to the cavity (111); one end of the wiring piece (21) is connected to the connecting piece (32), and the other end is attached to the inner wall of the cavity (111) and faces the movable end (221); and the inner wall on one side of the pressing port (115) is provided as a limiting portion (13) for preventing the separation button (23) from coming out.

2. The plug-in terminal block according to claim 1, characterized in that: The base (1) comprises a plurality of bases (101, 102, 103, 104) arranged in sequence along the width direction, each of the bases having a mounting cavity (11), and the mounting cavity (11) passes through a side wall of the base to form an assembly opening (12), and adjacent bases are plug-connected, and a housing (4) is snap-connected to the outer side of the base (1), and the housing (4) is provided with a connection hole (41) for inserting a relay (6), a socket (42) for inserting a wire, and an unlocking hole (43) for exposing a separation button (23).

3. The plug-in terminal block according to claim 2, characterized in that: The connection units (3) are all arranged in the middle of the base (1), and the wiring units (2) are distributed on both sides of the base (1).

4. The plug-in terminal block according to claim 2, characterized in that: The base (1) further comprises a plurality of connection seats (105, 106, 107) arranged in sequence along the width direction, each of the connection seats having a mounting cavity (11), and the mounting cavity (11) passes through a side wall of the connection seat to form an assembly opening (12), and the connection unit (3) corresponding to the connection seat is used to connect a relay coil, and the plurality of connection seats are sequentially a first connection seat (105), a second connection seat (106) and a third connection seat (107); The multiple bases are sequentially a first base (101), a second base (102), a third base (103) and a fourth base (104); the first base (101) is connected to a first connecting base (105); the second base (102) is connected to a second connecting base (106); the fourth base (104) is connected to a third connecting base (107); the assembly openings (12) of the first connecting base (105), the first base (101), the second base (102), the third base (103) and the fourth base (104) are oriented in the same direction; the assembly openings (12) of the first connecting base (105) and the second connecting base (106) are oriented opposite to each other; and the assembly openings (12) of the second connecting base (106) and the third connecting base (107) are oriented in the same direction.

5. The plug-in terminal block according to claim 4, characterized in that: One end of the fixing groove (112) away from the movable end (221) is connected to the cavity (111); the wiring piece (21) is provided with a connecting protrusion (211); and the fixing end (222) abuts against a side of the connecting protrusion (211) close to the movable end (221).

6. The plug-in terminal block according to claim 5, characterized in that: The wiring units (2) located inside the first connection seat (105) and the second connection seat (106) are connected to the same connection unit (3), and the connection unit (3) is an integrated unit (3a), and the integrated unit (3a) is integrally formed from a connection terminal (31) and two connection pieces (32), and a through hole (15) is provided on the opposite side of the first connection seat (105) and the second connection seat (106), and the through hole (15) is directly opposite to the fixed end (222).

7. The plug-in terminal block according to claim 4, characterized in that: The fixed end (222) does not contact the wiring piece (21); the wiring units (2) located inside the first connection seat (105) and the second connection seat (106) are connected to the same connection unit (3); and the connection unit (3) is a plug-in unit (3b); the plug-in unit (3b) comprises a connection terminal (31), a first connection piece (32a) and a second connection piece (32b); the first connection piece (32a) is connected to the connection terminal (31); and the second connection piece (32b) is connected to a plug-in portion plugged into the first connection piece (32a).

8. The plug-in terminal block according to claim 7, characterized in that: The plug-in portion comprises a lower clamping strip (33) and an upper clamping strip (34), wherein the lower clamping strip (33) and the upper clamping strip (34) are arranged to be arched towards each other, and the lower clamping strip (33) and the upper clamping strip (34) are respectively pressed against two sides of the first connecting piece (32a).

9. The plug-in terminal block according to claim 7, characterized in that: The connecting piece (32) and the connecting piece (21) are integrally formed.

10. The plug-in terminal block according to claim 2, characterized in that: The housing (4) is hinged with a hook (5) for fixing a relay (6).

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