Large-P-distance PID type terminal block

Abstract

One end of an elastic sheet is fixedly connected with a conductive main body of a conductive terminal, the other end of the elastic sheet and a conductive plate of the conductive terminal form an elastic wire clamping structure, a clamping sheet accommodating cavity is formed in the inner side of the lower end of an insulating lower cover, and an insertion hole in the lower end face of the insulating lower cover is communicated with the clamping sheet accommodating cavity. The upper end of the insulating lower cover is provided with a wiring groove communicated with the clamping piece containing cavity, the insulating upper cover can fixedly cover an opening structure at the upper end of the wiring groove, the conductive terminal and the elastic piece on the conductive terminal can be inserted into the insulating lower cover through the opening structure at the upper end of the wiring groove, and the conductive clamping piece of the conductive terminal can be contained in the clamping piece containing cavity. The conductive main body of the conductive terminal can be fixedly positioned in the wiring cavity, the other end of the elastic sheet is stopped on the bottom surface of the inner side of the insulating upper cover along the side wall of the elastic deformation direction of the elastic sheet, and the insulating upper cover is provided with a wiring hole and an operation hole which are communicated with the wiring cavity. The service life is long.

Description

Technical Field

[0001] The utility model relates to a terminal block, in particular to a large P-distance PID type terminal block. Background Art

[0002] In order to support the spring clips, the insulating shells of the existing large P-pitch spring-type terminal blocks all adopt a method of splicing multiple plastic parts. The insulating shell generally includes an insulating body, side covers on both sides and a bottom cover. During assembly, the spring clips are first assembled with the conductive terminals, and then the assembly structure of the spring clips and the conductive terminals is installed on the insulating body from the side. Finally, the side covers on both sides need to be fixed to cover the surfaces on both sides of the insulating body to achieve fixed positioning of the spring clips and the conductive terminals on both sides of the terminal block. Finally, the bottom cover is put on the outside of the conductive clips of the conductive terminals and fixedly connected to the bottom of the lower end of the insulating body. The insulating shell of this type of terminal block has many parts, resulting in a high mold cost, and the terminal block assembly process is complicated, the working hours are long, and the assembly cost is high. The insulating shell of the terminal block is assembled from multiple parts, and the overall connection reliability is poor. Utility Model Content

[0003] In order to make up for the above deficiencies, the utility model provides a large P-pitch PID type terminal block, which has a simple structure, is easy to assemble, has low mold cost and assembly cost, and has high reliability of the overall connection of the terminal block.

[0004] The utility model adopts the following technical solution to solve the technical problem: a large P-distance PID type terminal block, comprising a conductive terminal and a spring, wherein the conductive terminal comprises a conductive body and a conductive clip, the root of the conductive clip is fixedly connected to the conductive body for electrical conduction, a conductive plate is provided on the conductive body, one end of the spring is fixedly connected to the conductive body, and the other end of the spring can form an elastic wire clamping structure together with the conductive plate, and further comprises an insulating upper cover and an insulating lower cover, wherein a clip accommodating cavity is formed on the inner side of the lower end of the insulating lower cover, a plugging hole communicating with the clip accommodating cavity is formed on the lower end surface of the insulating lower cover, a wiring groove communicating with the clip accommodating cavity is formed on the upper end of the insulating lower cover, the upper end of the wiring groove is an open structure, and the insulating upper cover can be fixedly covered on the open structure of the wiring groove at the upper end of the insulating lower cover, thereby The wiring slot is closed to form a wiring cavity, the conductive terminal and the spring clip thereon can be inserted into the insulating lower cover through the open structure at the upper end of the wiring slot, and the conductive clip of the conductive terminal can be accommodated in the clip accommodating cavity in the insulating lower cover, the conductive body of the conductive terminal can be fixedly positioned in the wiring cavity, the other end of the spring clip is stopped on the inner bottom surface of the insulating upper cover along the side wall of its elastic deformation direction so that the other end of the spring clip and the conductive plate always maintain an elastic clamping structure, and a wiring hole and an operating hole connected to the wiring cavity are formed on the insulating upper cover, the wire to be wired can be inserted into the wiring slot through the wiring hole and clamped and conducted by the conductive plate and the elastic clamping structure at the other end of the spring clip, and the wire advancing and retreating tool can be inserted into the wiring slot through the operating hole and drive the other end of the spring clip to elastically deform to open the elastic clamping structure to realize wire advancing or retreating.

[0005] As a further improvement of the present invention, the conductive terminal also includes a spring support column, which is fixedly positioned on the conductive body. The spring is a V-shaped structure with an arc-shaped bend in the middle, and the inner arc surface of the arc-shaped bend in the middle of the spring is tightly supported on the outer side of the circumference of the spring support column.

[0006] As a further improvement of the utility model, the spring support column is a rolled structure formed by winding and bending a long sheet structure.

[0007] As a further improvement of the utility model, a spring limiting wall is also provided on the conductive body of the conductive terminal, and a V-shaped channel is formed between the spring limiting wall and the inner bottom surface of the insulating upper cover. The other end of the spring is accommodated in the V-shaped channel, and the inner side surface of the insulating upper cover and the spring limiting wall limit the elastic swing angle of the other end of the spring.

[0008] As a further improvement of the utility model, the spring clip limiting wall is a sheet structure integrally formed on the conductive body by bending, the spring clip support column is integrally formed at one end of the spring clip limiting wall, and the inner side wall of the wiring slot at the upper end of the insulating lower cover is provided with a spring clip limiting wall support rib, and the other end of the spring clip limiting wall on the conductive terminal is tightly supported on the spring clip limiting wall support rib.

[0009] As a further improvement of the present invention, the conductive body of the conductive terminal is a U-shaped bending structure whose shape matches the wiring cavity, the outer side surface of the conductive body is tightly attached to the inner side wall of the wiring cavity, one side wall of the U-shaped bending structure of the conductive body forms a conductive plate, and the other side wall of the U-shaped bending structure of the conductive body is provided with an inward convex buckle, and an open slot is provided on the side wall at one end of the spring sheet, the side wall at one end of the spring sheet is tightly attached to the surface of the other side wall of the U-shaped bending structure of the conductive body, and the inward convex buckle is clamped in the open slot on the side wall at one end of the spring sheet.

[0010] As a further improvement of the present invention, a spring sheet blocking wall with a convex rib structure is also provided in the wiring groove of the insulating lower cover, and the spring sheet blocking wall and the inner side wall of the wiring groove of the insulating lower cover are used to form a spring sheet positioning groove with an open upper end and a closed lower end, one end of the spring sheet is inserted into the spring sheet positioning groove, and the end of one end of the spring sheet is stopped at the bottom surface of the spring sheet positioning groove, and the side wall of one end of the spring sheet is stopped at the inner side wall of the spring sheet positioning groove, and the inner convex buckle on the other side wall of the U-shaped bending structure of the conductive body is an elastic inverted buckle structure formed by tearing and bending, and the elastic inverted buckle structure can be inserted into the open buckle slot on the side wall of one end of the spring sheet and prevent one end of the spring sheet from moving toward the opening direction of the spring sheet positioning groove.

[0011] As a further improvement of the present invention, a snap-fit ​​groove is provided on the side wall opposite to the open structure of the wiring slot at the upper end of the insulating lower cover, and an outer side wall opposite to the insulating upper cover is provided with an outward protruding buckle. The insulating upper cover can be inserted into the open structure of the wiring slot at the upper end of the insulating lower cover, and the outward protruding buckle on the outer side wall of the insulating upper cover can be snap-fitted and connected with the snap-fit ​​groove on the insulating lower cover to achieve fixed positioning of the two.

[0012] As a further improvement of the present utility model, a conductive plate support wall with a convex rib structure is also provided on the side wall of the wiring slot at the upper end of the insulating lower cover, and the conductive plate of the conductive terminal is flatly supported on the surface of the conductive plate support wall, and the conductive plate support wall and the end face of the conductive plate thereon facing the opening direction of the wiring slot are tightly against the inner bottom surface of the insulating upper cover, and a side wall of the insulating upper cover is inserted into the gap formed between the conductive plate support wall and the inner side wall of the wiring slot, and a step structure is also formed on the bottom surface of the wiring slot at the upper end of the insulating lower cover, and the end of the other side wall of the insulating upper cover is tightly against the step structure.

[0013] As a further improvement of the utility model, an external step matching the step structure of the bottom surface of the wiring slot is formed on the outer side surface of the upper end of the insulating lower cover, and a locking hook with a cantilever structure is integrally formed on the external step of the insulating lower cover, and the locking hook can hook the connector sleeved on the outer side of the lower end of the insulating lower cover.

[0014] The beneficial technical effect of the utility model is as follows: the utility model designs the insulating shell of the terminal block into an assembly structure consisting of an insulating lower cover and an insulating upper cover, and forms a wiring groove and a clip accommodating cavity that are connected up and down in the insulating lower cover. During assembly, the assembled spring pieces and conductive terminals are inserted from the open structure at the upper end of the insulating lower cover, and the conductive clips on the conductive terminals are inserted into the clip accommodating cavity at the lower end of the insulating lower cover through the wiring groove at the upper end of the insulating lower cover. At the same time, the conductive body of the conductive terminal and the spring pieces are accommodated in the wiring groove of the insulating lower cover. After the insulating upper cover is assembled to the insulating lower cover, the open structure at the upper end of the insulating lower cover is closed to press and fix the conductive body of the conductive terminal, and at the same time, the spring pieces are blocked and limited to prevent the spring pieces from swinging too much and detaching from the conductive terminal. The conductive plate of the utility model also integrally forms a spring support column and a spring limiting wall on the conductive terminal to support the elastic swing of the other end of the spring and limit the swing angle, avoiding the arrangement of a spring support structure in the insulating shell, simplifying the insulating shell structure, avoiding the splicing of too many parts, effectively reducing the mold cost of the insulating shell, simplifying the assembly process, reducing the assembly cost of the terminal block, and improving the assembly efficiency. The overall connection reliability of the terminal block is higher and it is not easy to fail after long-term use. The elastic deformation part of the spring is supported by the spring support column made of metal material, which also improves the support stability of the spring deformation. The spring support column is not easily damaged by the long-term deformation pressure of the spring, effectively extending the service life of the terminal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first stereoscopic view of the conductive terminal of the utility model;

[0016] Figure 2 It is a second stereoscopic view of the conductive terminal of the utility model;

[0017] Figure 3 It is a first stereoscopic diagram of the conductive terminal and spring assembly structure of the utility model;

[0018] Figure 4 It is a second stereoscopic view of the conductive terminal and spring assembly structure of the utility model;

[0019] Figure 5 It is a cross-sectional view of the structural principle of the utility model;

[0020] Figure 6 This is a schematic diagram of the insulating lower cover structure of the utility model;

[0021] Figure 7 It is a schematic diagram of the insulating upper cover structure of the utility model. DETAILED DESCRIPTION

[0022] Embodiment: A large P-distance PID type terminal block, comprising a conductive terminal 1 and a spring 2, wherein the conductive terminal 1 comprises a conductive body 11 and a conductive clip 12, wherein the root of the conductive clip 12 is fixedly connected to the conductive body 11 in electrical conduction, a conductive plate 111 is provided on the conductive body 11, one end of the spring 2 is fixedly connected to the conductive body 11, and the other end of the spring 2 can form an elastic clamping structure together with the conductive plate 111, and further comprises an insulating upper cover 3 and an insulating lower cover 4, wherein a clip accommodating cavity 41 is formed on the inner side of the lower end of the insulating lower cover 4, a plug hole 411 communicating with the clip accommodating cavity 41 is formed on the lower end surface of the insulating lower cover 4, a wiring groove 42 communicating with the clip accommodating cavity 41 is formed on the upper end of the insulating lower cover 4, and the upper end of the wiring groove 42 is an open structure, and the insulating upper cover 3 can be fixedly covered on the open structure of the wiring groove 42 at the upper end of the insulating lower cover 4, thereby closing the wiring groove 42 The conductive terminal 1 and the spring clip 2 thereon can be inserted into the insulating lower cover 4 through the open structure at the upper end of the wiring groove 42, and the conductive clip 12 of the conductive terminal 1 can be accommodated in the clip accommodating cavity 41 in the insulating lower cover 4, and the conductive body 11 of the conductive terminal 1 can be fixedly positioned in the wiring cavity, and the other end of the spring clip 2 is stopped on the inner bottom surface 34 of the insulating upper cover along the side wall of its elastic deformation direction so that the other end of the spring clip 2 and the conductive plate 111 always maintain an elastic clamping structure, and the insulating upper cover 3 is formed with a wiring hole 31 and an operating hole 32 connected to the wiring cavity, and the wire to be wired can be inserted into the wiring groove 42 through the wiring hole 31 and be clamped and conducted by the conductive plate 111 and the elastic clamping structure at the other end of the spring clip 2, and the wire advancing and retreating tool can be inserted into the wiring groove 42 through the operating hole 32 and drive the other end of the spring clip 2 to elastically deform and open the elastic clamping structure to realize wire advancing or retreating.

[0023] During assembly, first assemble one end of the spring sheet 2 on the conductive body 11 of the conductive terminal 1, and make the other end of the spring sheet 2 elastically contact the conductive plate 111 of the conductive terminal 1, and the two form an elastic clamping structure, and then insert the conductive terminal 1 assembled with the spring sheet 2 into the insulating lower cover 4 from the open structure at the upper end of the insulating lower cover 4, and the conductive clip 12 on the conductive terminal 1 passes through the wiring groove 42 at the upper end of the insulating lower cover 4 and is inserted into the clip accommodating cavity 41 at the lower end of the insulating lower cover 4, and then fix the insulating upper cover 3 to cover the opening at the upper end of the insulating lower cover 4, block and position the conductive terminal 1, and the wiring hole 31 on the insulating upper cover 3 is just opposite to the clamping structure formed by the conductive plate 111 and the other end of the spring sheet 2, and the operating hole 32 on the insulating upper cover 3 is opposite to the side wall of the other end of the spring sheet 2.

[0024] The outer dimension of the lower end of the insulating lower cover 4 is preferably smaller than the outer dimension of the upper end of the insulating lower cover 4. The lower end of the insulating lower cover 4 forms a plug structure. When it is plugged into the socket connector, the pin on the socket connector is inserted into the conductive clip 12 through the plug hole 411 and is clamped and turned on. When wiring, it is only necessary to insert a tool into the operating hole 32 and press the other end of the spring sheet 2 to elastically deform the other end of the spring sheet 2 away from the conductive plate 111. After the wire is inserted into the wiring hole 31 for a certain length, the tool can be released.

[0025] The insulating shell of the terminal block is composed of an insulating upper cover 3 and an insulating lower cover 4, with a small number of parts and a small number of assembly positions. After assembly, the insulating upper cover 3 and the insulating lower cover 4 are stably connected. The pre-assembled structure of the conductive terminal 1 and the spring 2 only needs to be inserted into the insulating lower cover 4, and then the insulating upper cover 3 is covered to complete the assembly. The assembly is convenient and fast.

[0026] The conductive terminal 1 also includes a spring support column 13, which is fixedly positioned on the conductive body 11. The spring 2 is a V-shaped structure with an arc-shaped bend in the middle. The inner arc surface of the arc-shaped bend in the middle of the spring 2 is tightly supported on the outer side of the circumference of the spring support column 13.

[0027] A spring support column 13 is provided on the conductive terminal 1, and the spring support column 13 supports the bent part of the spring 2, so that the spring support column 13 is used as a fulcrum when the other end of the spring 2 is elastically deformed and swung, thereby avoiding plastic deformation and damage of the spring 2. The spring support column 13 is designed on the conductive terminal 1, and it is avoided to set the spring support column 13 structure in the insulating shell, which is convenient for the conductive terminal 1 to adopt an insertion-type assembly method, and is convenient for injection molding of the insulating lower cover 4. Of course, the spring support column 13 can also be formed from bottom to top in the insulating lower cover 4 in the form of convex ribs. In this way, it is necessary to form an avoidance structure on the conductive terminal 1. This is an equivalent replacement structure that can be easily thought of by technical personnel in this field based on this patent, and belongs to the protection scope of this patent.

[0028] The spring support column 13 is a rolled structure formed by winding and bending a long sheet structure. This structure facilitates the spring support column 13 to be integrally formed on the conductive terminal 1, and the structure is simple. In addition, the spring 2 can also be fixedly installed on the conductive terminal 1 by riveting, welding, etc.

[0029] The conductive body 11 of the conductive terminal 1 is also provided with a spring-type limiting wall 14, and a V-shaped channel is formed between the spring-type limiting wall 14 and the inner bottom surface 34 of the insulating upper cover. The other end of the spring piece 2 is accommodated in the V-shaped channel, and the inner side surface of the insulating upper cover 3 and the spring-type limiting wall 14 limit the elastic swing angle of the other end of the spring piece 2. The spring-type limiting wall 14 and the inner bottom surface 34 of the insulating upper cover are used together to limit the amplitude of the elastic swing of the other end of the spring piece 2, ensuring that the other end of the spring piece 2 and the conductive plate 111 are always in an effective elastic clamping state for the wire, so as to avoid the other end of the spring piece 2 swinging too much and being damaged or unable to clamp the wire.

[0030] The spring-type limiting wall 14 is a sheet-like structure integrally formed on the conductive body 11 by bending, the spring-type supporting column 13 is integrally formed on one end of the spring-type limiting wall 14, and a spring-type limiting wall supporting rib 421 is provided on the inner side wall of the wiring slot 42 at the upper end of the insulating lower cover 4, and the other end of the spring-type limiting wall 14 on the conductive terminal 1 is tightly supported on the spring-type limiting wall supporting rib 421.

[0031] The support rib 421 of the spring-clip limiting wall can support and limit the spring-clip limiting wall 14, which is beneficial to fix and position the conductive body 11 of the conductive terminal 1 on the one hand, and can support the spring-clip supporting wall 2 and the spring-clip supporting column 13 at its end on the other hand to prevent them from deformation and failure. The above structure enables the conductive terminal 1 to be integrally formed by stamping and bending of sheet metal, with a simple structure, low production cost and high strength.

[0032] The conductive body 11 of the conductive terminal 1 is a U-shaped bending structure whose appearance matches the wiring cavity. The outer side surface of the conductive body 11 is tightly attached to the inner wall of the wiring cavity. One side wall of the U-shaped bending structure of the conductive body 11 forms a conductive plate 111. An inner convex buckle 112 is provided on the other side wall of the U-shaped bending structure of the conductive body 11. An open slot is provided on the side wall at one end of the spring sheet 2. The side wall at one end of the spring sheet 2 is tightly attached to the surface of the other side wall of the U-shaped bending structure of the conductive body 11, and the inner convex buckle 112 is clamped in the open slot on the side wall at one end of the spring sheet 2. The conductive body 11 of the conductive terminal 1 is designed to be a U-shaped bending structure, which is fixed in position by the outer side surfaces in the front, back, left, right, up and down directions being tightly attached to the inner wall of the knot cavity. One side wall of the U-shaped bending structure serves as a conductive plate 111, and the other side wall is used to fix one end of the spring 2. The spring limiting wall 14 can be an integrated structure that is torn and bent on the bottom surface of the U-shaped bending structure, and the spring supporting column 13 is formed by rolling and bending one end of the spring limiting wall 14 in the length direction, and the overall structure is simple.

[0033] A spring sheet 2 blocking wall with a rib structure is also provided in the wiring groove 42 of the insulating lower cover 4, and the spring sheet 2 blocking wall and the inner side wall of the wiring groove 42 of the insulating lower cover 4 are used to form a spring sheet positioning groove 422 with an open upper end and a closed lower end. One end of the spring sheet 2 is inserted into the spring sheet positioning groove 422, and the end of one end of the spring sheet 2 is stopped at the bottom surface of the spring sheet positioning groove 422, and the side wall of one end of the spring sheet 2 is stopped at the inner side wall of the spring sheet positioning groove 422. The inner convex buckle 112 on the other side wall of the U-shaped bending structure of the conductive body 11 is an elastic inverted buckle structure formed by tearing and bending. The elastic inverted buckle structure can be inserted into the open buckle slot on the side wall of one end of the spring sheet 2 and prevent one end of the spring sheet 2 from moving toward the opening direction of the spring sheet positioning groove 422. When the conductive terminal 1 and the spring 2 are installed in the wiring slot 42 of the insulating lower cover 4, the end of one end of the spring 2 is inserted into the spring positioning slot 422, and the end face of one end of the spring 2 and the side walls in the front, back, left and right directions are limited by the spring positioning slot 422. At the same time, the inner convex buckle 112 on the conductive terminal 1 clamps the open slot on the side wall of one end of the spring 2 so that one end of the spring 2 is firmly positioned. This positioning structure can realize the firm and stable positioning of one end of the spring 2, and the overall positioning structure is simple.

[0034] A buckling groove 43 is provided on the side wall opposite to the open structure of the wiring groove 42 at the upper end of the insulating lower cover 4, and a convex buckle 33 is provided on the outer side wall opposite to the insulating upper cover 3. The insulating upper cover 3 can be inserted into the open structure of the wiring groove 42 at the upper end of the insulating lower cover 4, and the convex buckle 33 on the outer side wall of the insulating upper cover 3 can be buckled and connected with the buckling groove 43 on the insulating lower cover 4 to achieve fixed positioning of the two.

[0035] When the insulating upper cover 3 is assembled with the insulating lower cover 4, it is only necessary to insert the insulating upper cover 3 into the wiring groove 42 of the insulating lower cover 4, and the outer convex buckle 33 on the outer side will be engaged with the buckle groove 43 of the insulating lower cover 4 to be fixed in position. The structure is simple, and other methods can also be used for connection and positioning, such as connection and fixing through a connecting piece, or fixing by hot melt, etc.

[0036] A conductive plate supporting wall 423 with a convex rib structure is also provided on the side wall of the wiring slot 42 at the upper end of the insulating lower cover 4, and the conductive plate 111 of the conductive terminal 1 is flatly supported on the surface of the conductive plate supporting wall 423. The conductive plate supporting wall 423 and the end face of the conductive plate 111 thereon facing the opening direction of the wiring slot 42 are tightly against the inner bottom surface 34 of the insulating upper cover, and a side wall of the insulating upper cover 3 is inserted into the gap formed between the conductive plate supporting wall 423 and the inner wall of the wiring slot 42. A step structure 424 is also formed on the bottom surface of the wiring slot 42 at the upper end of the insulating lower cover 4, and the other side wall end of the insulating upper cover 3 is tightly against the step structure 424.

[0037] The conductive plate support wall 423 can provide stable support for the conductive terminal 1 as a side wall of the conductive plate 111 to ensure stable wire clamping. At the same time, the depth of the insulating upper cover 3 inserted into the insulating lower cover 4 is limited by the conductive plate support wall 423 and the step mechanism to prevent the insulating upper cover 3 from shaking up and down in the insulating lower cover 4 and becoming disengaged.

[0038] An external step matching the step structure 424 on the bottom of the wiring slot 42 is formed on the outer side surface of the upper end of the insulating lower cover 4, and a lock hook 44 of a cantilever structure is integrally formed on the external step of the insulating lower cover 4, and the lock hook 44 can hook the connector sleeved on the outer side of the lower end of the insulating lower cover 4. Since an external step is synchronously formed on the outer side wall of the insulating lower cover 4, the root size of the lock buckle of the cantilever structure can be increased, the lock buckle strength of the cantilever connector can be improved, and the root fracture and damage can be avoided.

Claims

1. A large P-distance PID type terminal block, comprising a conductive terminal (1) and a spring sheet (2), wherein the conductive terminal comprises a conductive body (11) and a conductive clip (12), wherein the root of the conductive clip is fixedly connected to the conductive body in an electrically conductive manner, a conductive plate (111) is provided on the conductive body, one end of the spring sheet is fixedly connected to the conductive body, and the other end of the spring sheet can form an elastic wire clamping structure together with the conductive plate, wherein the conductive terminal comprises a conductive body (111), wherein the conductive body (111) is fixedly connected to the conductive body, and the other end of the spring sheet can form an elastic wire clamping structure together with the conductive plate, wherein the conductive body (111) is provided with a conductive plate (111), and wherein the conductive body (111) is fixedly connected to the conductive body, and the conductive body (111) is provided with a conductive plate (111), wherein the conductive body (111) is fixedly connected to the conductive body, and the conductive body The device also comprises an insulating upper cover (3) and an insulating lower cover (4), wherein a clip accommodating cavity (41) is formed on the inner side of the lower end of the insulating lower cover, a plug hole (411) communicating with the clip accommodating cavity is formed on the lower end surface of the insulating lower cover, a wiring slot (42) communicating with the clip accommodating cavity is formed on the upper end of the insulating lower cover, the upper end of the wiring slot is an open structure, the insulating upper cover can be fixedly covered on the open structure of the wiring slot at the upper end of the insulating lower cover, and then the wiring slot is closed to form a wiring cavity, the conductive terminal and the spring sheet thereon can be inserted into the insulating lower cover through the open structure of the wiring slot at the upper end, and the conductive clip of the conductive terminal can be accommodated in the insulating lower cover. In the clip receiving cavity in the cover, the conductive body of the conductive terminal can be fixedly positioned in the wiring cavity, and the other end of the spring sheet is stopped on the inner bottom surface (34) of the insulating upper cover along the side wall of the spring sheet in the direction of its elastic deformation, so that the other end of the spring sheet and the conductive plate always maintain an elastic clamping structure. The insulating upper cover is formed with a wiring hole (31) and an operating hole (32) connected to the wiring cavity. The wire to be wired can be inserted into the wiring slot through the wiring hole and clamped and connected by the conductive plate and the elastic clamping structure at the other end of the spring sheet. The wire advancing and retreating tool can be inserted into the wiring slot through the operating hole and drive the other end of the spring sheet to elastically deform to open the elastic clamping structure to realize wire advancing or retreating.

2. The large P-pitch PID type terminal block according to claim 1 is characterized by: The conductive terminal also includes a spring support column (13), which is fixedly positioned on the conductive body. The spring is a V-shaped structure with an arc-shaped bend in the middle. The inner arc surface of the arc-shaped bend in the middle of the spring is tightly supported on the outer side of the circumference of the spring support column.

3. The large P-pitch PID type terminal block according to claim 2 is characterized by: The spring support column is a rolled structure formed by winding and bending a long sheet structure.

4. According to claim 2, the large P-distance PID type terminal block is characterized in that: a spring-loaded limiting wall (14) is also provided on the conductive body of the conductive terminal, and a V-shaped channel is formed between the spring-loaded limiting wall and the inner bottom surface of the insulating upper cover, and the other end of the spring is accommodated in the V-shaped channel, and the inner side surface of the insulating upper cover and the spring-loaded limiting wall limit the elastic swing angle of the other end of the spring.

5. According to claim 2, the large P-pitch PID type terminal block is characterized in that: the spring-type limiting wall is a sheet structure integrally formed on the conductive body by bending, the spring-type supporting column is integrally formed on one end of the spring-type limiting wall, and the inner side wall of the wiring slot at the upper end of the insulating lower cover is provided with a spring-type limiting wall supporting rib (421), and the other end of the spring-type limiting wall on the conductive terminal is tightly supported on the spring-type limiting wall supporting rib.

6. The large P-pitch PID type terminal block according to claim 1 or 5, characterized in that: The conductive body of the conductive terminal is a U-shaped bending structure whose shape matches the wiring cavity. The outer side surface of the conductive body is tightly attached to the inner side wall of the wiring cavity. One side wall of the U-shaped bending structure of the conductive body forms a conductive plate. The other side wall of the U-shaped bending structure of the conductive body is provided with an inner convex buckle (112). An open slot is provided on the side wall at one end of the spring sheet. The side wall at one end of the spring sheet is tightly attached to the surface of the other side wall of the U-shaped bending structure of the conductive body, and the inner convex buckle is clamped in the open slot on the side wall at one end of the spring sheet.

7. The large P-distance PID terminal block according to claim 6 is characterized in that: a spring-type blocking wall with a convex rib structure is also provided in the wiring groove of the insulating lower cover, and the spring-type blocking wall and the inner side wall of the wiring groove of the insulating lower cover are used to form a spring-type positioning groove (422) with an open upper end and a closed lower end, one end of the spring sheet is inserted into the spring-type positioning groove, and the end of one end of the spring sheet is stopped at the bottom surface of the spring-type positioning groove, and the side wall of one end of the spring sheet is stopped at the inner side wall of the spring-type positioning groove, and the inner convex buckle on the other side wall of the U-shaped bending structure of the conductive body is an elastic inverted buckle structure formed by tearing and bending, and the elastic inverted buckle structure can be inserted into the open buckle groove on the side wall of one end of the spring sheet and prevent one end of the spring sheet from moving toward the opening direction of the spring sheet positioning groove.

8. The large P-pitch PID type terminal block according to claim 1 is characterized by: A buckling groove (43) is provided on the side wall opposite to the wiring slot open structure at the upper end of the insulating lower cover, and an outer side wall opposite to the insulating upper cover is provided with an outer convex buckle (33). The insulating upper cover can be inserted into the wiring slot open structure at the upper end of the insulating lower cover, and the outer convex buckle on the outer side wall of the insulating upper cover can be buckled and connected with the buckling groove on the insulating lower cover to achieve fixed positioning of the two.

9. The large P-pitch PID type terminal block according to claim 8 is characterized by: A conductive plate support wall (423) with a convex rib structure is also provided on the side wall of the wiring slot at the upper end of the insulating lower cover, and the conductive plate of the conductive terminal is flatly supported on the surface of the conductive plate support wall. The conductive plate support wall and the end face of the conductive plate thereon facing the opening direction of the wiring slot are tightly against the inner bottom surface of the insulating upper cover, and a side wall of the insulating upper cover is inserted into the gap formed between the conductive plate support wall and the inner wall of the wiring slot. A step structure (424) is also formed on the bottom surface of the wiring slot at the upper end of the insulating lower cover, and the other side wall end of the insulating upper cover is tightly against the step structure.

10. The large P-pitch PID type terminal block according to claim 9, characterized in that: An external step matching the step structure of the bottom surface of the wiring slot is formed on the outer side surface of the upper end of the insulating lower cover, and a locking hook (44) with a cantilever structure is integrally formed on the external step of the insulating lower cover, and the locking hook can hook a connector sleeved on the outer side of the lower end of the insulating lower cover.

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