Connector bar

Abstract

The utility model provides a line bank which comprises an insulating base, a plurality of accommodating parts which are arranged at intervals from left to right are arranged in front of the insulating base, hardware is arranged in the accommodating parts, the hardware is provided with screw cylinders which are arranged at intervals and are punched and stretched from front to back, the inner walls of the screw cylinders are provided with internal threads, and the internal threads are provided with external threads. The screw cylinder is provided with a fixing screw matched with the screw cylinder in a threaded mode, and a positioning groove penetrating through the whole cylinder wall of the screw cylinder in the axial direction of the screw cylinder is formed in the position, close to a cylinder opening of the screw cylinder, of the front face of the hardware. The wiring lug comprises a lug body and a wiring hoop which is positioned on the outer edge of the lug body and is integrally connected with the lug body, the section of the wiring hoop is C-shaped, a through hole is formed in the center of the lug body, and a positioning tenon which is taken from an internal material of the through hole and extends towards the axial direction of the through hole after being punched, cut and bent is arranged at the outer edge of the through hole. The lug body is arranged in front of the hardware; after the positioning tenon is matched with the positioning groove, the lug body is fixed on the hardware through a fixing screw penetrating through the through hole; and the wiring hoops of the wiring lugs on the hardware are opposite to each other. The device has the advantages of being stable and reliable to use and convenient to install.

Description

Technical Field

[0001] The utility model relates to the field of electrical accessories, in particular to a wiring block. Background Art

[0002] Existing terminal blocks are generally sold as a finished product by assembling the screws and hardware together with the insulating base. Therefore, users need to purchase terminal lugs separately when wiring. Terminal lugs also have current carrying capacity limitations. Therefore, if you buy terminal lugs with a carrying capacity greater than the hardware's overcurrent capacity (providing redundancy), it is fine. If you buy terminal lugs with a carrying capacity less than the hardware's overcurrent capacity, the terminal lugs may overheat and oxidize during later use (especially in high-load situations), thereby affecting safety. At the same time, when installing the current terminal lugs, as the screws are tightened, the friction torque acting on the lug surface will cause the lugs to rotate together, causing the power cord connection direction to change. Although manual correction can be made in the early stages, it becomes extremely difficult to correct the problem when the screws are fully tightened. As a result, the direction of the terminal lug and the power cord connection direction are inconsistent after the fixation is completed, affecting the aesthetics. Utility Model Content

[0003] In view of the above problems, the present invention aims to provide a terminal block that is stable and reliable in use and easy to install.

[0004] In response to the above problems, the following technical solutions are provided: a terminal block includes an insulating base, a front portion of the insulating base is provided with a plurality of accommodating portions arranged at intervals from left to right, the accommodating portions are provided with hardware, the hardware is provided with a screw barrel arranged at intervals and stretched from front to back by stamping, the inner wall of the screw barrel is provided with an internal thread, the screw barrel is provided with a fixing screw matching the thread, and the front side of the hardware is provided with a positioning groove extending through the entire wall of the screw barrel in the axial direction of the screw barrel near the barrel mouth; it also includes a wiring ear, the wiring ear includes an ear body and a wiring clamp located at the outer edge of the ear body and connected to the ear body as a whole, the wiring clamp is C-shaped in cross section, the center of the ear body is provided with a through hole, the outer edge of the through hole is provided with a positioning protrusion taken from the internal material of the through hole and extended in the axial direction of the through hole after stamping, cutting and bending, the ear body is placed in front of the hardware, its positioning protrusion is adapted to the positioning groove, and it is fixed to the hardware by a fixing screw passing through the through hole; the wiring ears on the hardware have their wiring clamps facing away from each other.

[0005] In the above structure, the wiring ear is ready-made, so its flow rate capacity can be guaranteed to be compatible with the hardware when leaving the factory, avoiding the situation where the user needs to purchase the wiring ear by himself later, resulting in its flow rate capacity being less than the carrying capacity. The wiring ear can also be removed as needed to directly press the power cord onto the hardware through the fixing screw; when the wiring ear is fitted with the hardware, its positioning protrusion is adapted to the positioning groove to limit the circumferential rotation between the two with the fixing screw as the axis, and the consistency of the direction of the wiring clamp can be ensured when the fixing screw is tightened, without manual adjustment and correction; at the same time, since the positioning groove passes through the wall of the screw barrel when it is opened, when the fixing screw is rusted and foreign matter is present between the thread mating surfaces, it can be discharged in time through the positioning groove, thereby ensuring the flexibility of the rotation of the fixing screw.

[0006] The utility model is further configured such that the ear body of the wiring ear and the wiring clamp positioning projection are integrally stamped and formed by a plate.

[0007] In the above structure, the entire lug is made of brass or copper.

[0008] The present invention is further configured such that there are a plurality of positioning grooves which are spaced apart along the circumferential direction of the barrel.

[0009] In the above structure, there are preferably two positioning grooves, and the positioning grooves on each hardware are arranged collinearly with each other to reduce the reduction in its current carrying capacity after the grooves are opened.

[0010] The present invention is further configured such that the number of the positioning protrusions is equal to the number of the positioning grooves and they are arranged in a one-to-one correspondence with each other.

[0011] In the above structure, it is ensured that there is sufficient fixing firmness between the two.

[0012] The present invention is further configured such that a vertical distance from a side of the positioning protrusion facing the axis of the through hole to the axis of the through hole is greater than or equal to half of the major diameter of the internal thread.

[0013] In the above structure, interference between the external thread crest of the fixing screw and the positioning protrusion is avoided when the fixing screw is screwed in.

[0014] The present invention is further configured such that the two ends of the hardware in the direction of the spacing between the screw barrels are provided with fixing plates bent backward at 90 degrees; the accommodating portion is an accommodating groove, and a slot for inserting the fixing plate is provided in the accommodating groove.

[0015] In the above structure, the hardware and the fixing plate are made of copper or brass.

[0016] The present invention is further configured such that anti-dropout hooks which are turned outward by punching are provided on both sides of the fixing plate, and the anti-dropout hooks are adapted to fit into the slots to prevent dropout.

[0017] In the above structure, the anti-drop hook is adapted to the slot to prevent the hardware from falling out of the accommodating portion.

[0018] The present invention is further configured such that insulating partitions are provided on both sides of the accommodating portions in adjacent directions.

[0019] In the above structure, the insulating partition and the insulating base are integrally injection-molded, thereby improving the insulation by assisting the physical barrier effect.

[0020] The utility model is further configured such that the fixing screw comprises a threaded section matched with the thread of the barrel and a nut connected to the threaded section, and a side of the nut facing the threaded section is provided with scraping grooves spaced apart along its circumferential direction.

[0021] In the above structure, the side of the nut facing the threaded section contacts the ear body when the fixing screw is tightened, and the scraping groove can be used to accommodate foreign matter or oxide layer attached to the surface of the ear body to improve conductivity.

[0022] The utility model is further configured such that one end of the scraping groove is close to the threaded section, and the other end extends toward the outer edge of the nut while being inclined toward the direction in which the fixing screw is screwed out.

[0023] In the above structure, when tightening clockwise, foreign matter or oxide layer entering the scraping groove can be guided to be discharged outward.

[0024] The beneficial effects of the present invention are as follows: the wiring lugs are ready-made, so their flow rate capacity can be guaranteed to be compatible with the hardware when leaving the factory, avoiding the situation that users need to purchase wiring lugs on their own later, resulting in their flow rate capacity being less than the load-bearing capacity. The wiring lugs can also be removed as needed to directly press the power cord onto the hardware through the fixing screws; when the wiring lugs are fitted into the hardware, their positioning protrusions and positioning grooves are adapted to limit the circumferential rotation between the two with the fixing screws as the axis, and the consistency of the direction of the wiring clamp can be guaranteed when the fixing screws are tightened, without the need for manual adjustment and correction; at the same time, because the positioning grooves penetrate the wall of the screw barrel when they are opened, when the fixing screws are rusted and foreign matter is between the thread mating surfaces, it can be discharged in time through the positioning grooves, thereby ensuring the flexibility of the rotation of the fixing screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the first exploded three-dimensional structure of the utility model.

[0026] Figure 2 It is a partially cutaway three-dimensional structural schematic diagram of the insulating base of the present invention.

[0027] Figure 3 For this utility model Figure 2 Schematic diagram of the explosion three-dimensional structure.

[0028] Figure 4This is a schematic diagram of the exploded first-person perspective three-dimensional structure of the hardware, fixing screws, and wiring ears of the present invention.

[0029] Figure 5 It is a three-dimensional structural diagram of the hardware, fixing screws and wiring ears in the combined state of the present invention.

[0030] Figure 6 This is a schematic diagram of the exploded second-angle perspective stereoscopic structure of the hardware, fixing screws, and wiring ears of the present invention.

[0031] Meanings of the numbers in the figure: 10 - insulating base; 11 - accommodating portion; 12 - accommodating groove; 121 - slot; 13 - insulating partition; 20 - hardware; 21 - screw barrel; 211 - internal thread; 22 - positioning groove; 23 - fixing plate; 231 - anti-unhooking; 30 - fixing screw; 31 - threaded section; 32 - nut; 321 - scraping groove; 40 - wiring ear; 41 - ear body; 411 - through hole; 412 - positioning cam; 42 - wiring clamp. DETAILED DESCRIPTION

[0032] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] refer to Figures 1 to 6 ,like Figures 1 to 6 The terminal block shown in the figure includes an insulating base 10, a plurality of accommodating portions 11 arranged at intervals from left to right are provided on the front of the insulating base 10, the accommodating portions 11 are provided with hardware 20, the hardware 20 is provided with a screw barrel 21 arranged at intervals from each other and stretched from front to back by punching, the inner wall of the screw barrel 21 is provided with an internal thread 211, the screw barrel 21 is provided with a fixing screw 30 that cooperates with its thread, and the front of the hardware 20 is provided with a positioning groove 22 that is opened in the axial direction of the screw barrel 21 and penetrates the entire wall of the screw barrel 21 near the barrel mouth of the screw barrel 21; and further includes a wiring ear 40, the wiring ear 40 includes an ear The ear body 41 and a wiring clamp 42 located at the outer edge of the ear body 41 and integrally connected to the ear body 41, the wiring clamp 42 has a C-shaped cross-section, a through hole 411 is provided in the center of the ear body 41, and a positioning protrusion 412 is provided at the outer edge of the through hole 411. The positioning protrusion 412 is taken from the internal material of the through hole 411 and extends in the axial direction of the through hole 411 after being stamped, cut and bent. The ear body 41 is placed in front of the hardware 20, and its positioning protrusion 412 is adapted to the positioning groove 22 and fixed to the hardware 20 by a fixing screw 30 passing through the through hole 411; the wiring ears 40 on the hardware 20 have their wiring clamps 42 facing away from each other.

[0034] In the above structure, the wiring lug 40 is ready-made, so its flow rate capacity can be guaranteed to be compatible with the hardware 20 when it leaves the factory, avoiding the situation that the user needs to purchase the wiring lug 40 by himself later, resulting in its flow rate capacity being less than the load-bearing capacity. The wiring lug 40 can also be removed as needed to directly press the power cord onto the hardware 20 through the fixing screw 30; when the wiring lug 40 is attached to the hardware 20, its positioning protrusion 412 is adapted to the positioning groove 22 to limit the circumferential rotation between the two with the fixing screw 30 as the axis, and the consistency of the orientation of the wiring clamp 42 can be ensured when the fixing screw 30 is tightened, without manual adjustment and correction; at the same time, because the positioning groove 22 passes through the wall of the screw barrel 21 when it is opened, when the fixing screw 30 is rusted and foreign matter is between the thread mating surfaces, it can be discharged in time through the positioning groove 22, thereby ensuring the flexibility of rotation of the fixing screw 30.

[0035] In this embodiment, the ear body 41 of the wiring ear 40 and the positioning protrusion 412 of the wiring clamp 42 are integrally formed by stamping a plate.

[0036] In the above structure, the entire lug 40 is made of brass or copper.

[0037] In this embodiment, there are a plurality of positioning grooves 22 , which are spaced apart along the circumferential direction of the screw barrel 21 .

[0038] In the above structure, there are preferably two positioning grooves 22 , and the positioning grooves 22 on each hardware component 20 are collinearly arranged with respect to the virtual line a to reduce the reduction in its current carrying capacity after the grooves are cut.

[0039] In this embodiment, the number of the positioning protrusions 412 is equal to the number of the positioning slots 22 and they are arranged in a one-to-one correspondence with each other.

[0040] In the above structure, it is ensured that there is sufficient fixing firmness between the two.

[0041] In this embodiment, a vertical distance L1 between a surface of the positioning protrusion 412 facing the axis of the through hole 411 and the axis of the through hole 411 is greater than or equal to half of the major diameter of the internal thread 211 .

[0042] In the above structure, interference between the external thread crest of the fixing screw 30 and the positioning protrusion 412 is avoided when the fixing screw 30 is screwed in.

[0043] In this embodiment, the two ends of the hardware 20 in the spacing direction of the screw barrel 21 are provided with fixing plates 23 bent backward at 90 degrees; the accommodating portion 11 is an accommodating groove 12, and the accommodating groove 12 is provided with a slot 121 for inserting the fixing plate 23.

[0044] In the above structure, the hardware 20 and the fixing plate 23 are made of copper or brass.

[0045] In this embodiment, anti-dropout hooks 231 formed by punching and turning outward are provided on both sides of the fixing plate 23 , and the anti-dropout hooks 231 are adapted to fit into the slots 121 to prevent dropout.

[0046] In the above structure, the anti-drop hook 231 is adapted to the slot 121 to prevent the hardware component 20 from falling out of the accommodating portion 11 .

[0047] In this embodiment, insulating partitions 13 are provided on both sides of the accommodating portion 11 in the adjacent direction.

[0048] In the above structure, the insulating partition 13 and the insulating base 10 are integrally injection-molded, thereby improving the insulation by assisting the physical barrier effect.

[0049] In this embodiment, the fixing screw 30 includes a threaded section 31 threadedly matched with the screw barrel 21 and a nut 32 connected to the threaded section 31. The nut 32 is provided with scraping grooves 321 spaced apart along its circumferential direction on a side facing the threaded section 31.

[0050] In the above structure, the side of the nut 32 facing the threaded section 31 contacts the ear body 41 when the fixing screw 30 is tightened, and the scraping groove 321 can accommodate foreign matter or oxide layer attached to the surface of the ear body 41 to improve conductivity.

[0051] In this embodiment, one end of the scraping groove 321 is close to the threaded section 31 , and the other end extends toward the outer edge of the nut 32 and is inclined toward the direction in which the fixing screw 30 is screwed out.

[0052] In the above structure, when tightened clockwise, foreign matter or oxide layer entering the scraping groove 321 can be guided to be discharged outward.

[0053] The beneficial effects of the present invention are as follows: the wiring ear 40 is ready-made, so its flow rate capacity can be guaranteed to be compatible with the hardware 20 when it leaves the factory, avoiding the situation that the user needs to purchase the wiring ear 40 by himself later, resulting in its flow rate capacity being less than the carrying capacity. The wiring ear 40 can also be removed as needed to directly press the power cord onto the hardware 20 through the fixing screw 30; when the wiring ear 40 is fitted into the hardware 20, its positioning protrusion 412 is adapted to the positioning groove 22 to limit the circumferential rotation between the two with the fixing screw 30 as the axis, and the consistency of the orientation of the wiring clamp 42 can be ensured when the fixing screw 30 is tightened, without manual adjustment and correction; at the same time, because the positioning groove 22 passes through the wall of the screw barrel 21 when it is opened, when the fixing screw 30 is rusted and foreign matter is between the thread mating surfaces, it can be discharged in time through the positioning groove 22, thereby ensuring the flexibility of the rotation of the fixing screw 30.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. A terminal block, comprising an insulating base (10), a plurality of accommodating portions (11) arranged at intervals from left to right on the front of the insulating base (10), the accommodating portions (11) being provided with hardware (20), the hardware (20) being provided with screw barrels (21) spaced apart from each other and stretched from front to back by punching, the inner wall of the screw barrel (21) being provided with internal threads (211), the screw barrel (21) being provided with fixing screws (30) mating with the threads thereof, characterized in that: The front side of the hardware (20) is provided with a positioning groove (22) near the opening of the screw barrel (21) and extending through the entire wall of the screw barrel (21) in the axial direction of the screw barrel (21); the hardware (20) also includes a wiring ear (40), the wiring ear (40) including an ear body (41) and a wiring hoop (42) located at the outer edge of the ear body (41) and connected to the ear body (41) in one piece, the wiring hoop (42) having a C-shaped cross section, and a through hole (411) provided at the center of the ear body (41), the through hole (411) A positioning protrusion (412) is provided at the outer edge and is taken from the inner material of the through hole (411) through punching, cutting and bending and extends in the axial direction of the through hole (411). The ear body (41) is placed in front of the hardware (20) and its positioning protrusion (412) is adapted to the positioning groove (22) and fixed to the hardware (20) by a fixing screw (30) passing through the through hole (411); the wiring ears (40) on the hardware (20) and their wiring clamps (42) face in directions opposite to each other.

2. The terminal block according to claim 1, wherein: The ear body (41) of the wiring ear (40) and the positioning protrusion (412) of the wiring hoop (42) are integrally formed by stamping a plate.

3. A terminal block according to claim 1 or 2, characterized in that: There are a plurality of positioning grooves (22), which are spaced apart along the circumferential direction of the screw barrel (21).

4. The terminal block according to claim 3, wherein: The number of the positioning protrusions (412) is equal to the number of the positioning grooves (22) and they are arranged in a one-to-one correspondence with each other.

5. The terminal block according to claim 1, wherein: The vertical distance between the side of the positioning protrusion (412) facing the axis of the through hole (411) and the axis of the through hole (411) is greater than or equal to half the major diameter of the internal thread (211).

6. The terminal block according to claim 1, wherein: The hardware (20) is provided with fixing plates (23) bent backward at 90 degrees at both ends in the spacing direction of the screw barrel (21); the accommodating portion (11) is an accommodating groove (12), and a slot (121) for inserting the fixing plate (23) is provided in the accommodating groove (12).

7. The terminal block according to claim 6, characterized in that: Anti-dropout hooks (231) formed by punching and turning outward are provided on both sides of the fixing plate (23), and the anti-dropout hooks (231) are adapted to the slots (121) to prevent dropout.

8. The terminal block according to claim 1, wherein: Insulating partitions (13) are provided on both sides of the accommodating portion (11) in a direction adjacent to each other.

9. The terminal block according to claim 1, wherein: The fixing screw (30) comprises a threaded section (31) threadably engaged with the screw barrel (21) and a nut (32) connected to the threaded section (31); a surface of the nut (32) facing the threaded section (31) is provided with scraping grooves (321) spaced apart along its circumferential direction.

10. The terminal block according to claim 9, characterized in that: One end of the scraping groove (321) is close to the threaded section (31), and the other end extends toward the outer edge of the nut (32) and is inclined toward the direction in which the fixing screw (30) is screwed out.

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