Welded ground clamp

Abstract

The application discloses a welding ground clamp, comprising two middle parts of mutually hinged clamping arms, the two ends of the clamping arms are clamping ends and pressing ends respectively, the two clamping arms generate clamping force at the clamping ends through clamping springs, and the pressing end can make the two clamping ends open; the clamping arms are provided with a wiring terminal and a conductive part arranged at the clamping end, the wiring terminal comprises a wiring column and a wiring ring used for being connected with a wire and capable of being sleeved into the wiring column, the wiring column is provided with a limiting part capable of elastically extending out of the wiring column and capable of being retracted into the wiring column, the limiting part can limit the wiring ring from exiting the wiring column when the limiting part extends, the limiting part is provided with a pressing part elastically pressing the wiring ring when the limiting part extends towards the wiring ring, the wiring ring can be quickly sleeved into the wiring column by pressing the limiting part, and the wiring ring is limited from exiting, meanwhile, the wiring ring is elastically pressed by the pressing part, so that the wiring ring and the wiring column can keep good electrical communication, and the reliability and stability of the electrical connection are higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a welding grounding clamp. BACKGROUND

[0002] The welding grounding clamp is a common grounding device, which fixes the grounding wire of the welding power supply to the metal part that needs to be grounded. The welding grounding clamp can adapt to metal parts of different shapes and sizes and is suitable for various occasions and environments. However, the current grounding clamp generally connects the wire by pressing with a nut or a screw to maintain the electrical connection between the grounding clamp and the welding power supply. However, in actual application, the clamping position of the grounding clamp needs to be clamped in a relatively tricky position with limited operating space, which often requires the operator to rotate the grounding clamp to the corresponding angle. This can easily cause the wire to twist and generate a torsional force at the connection position, which can easily cause the screw thread to loosen, affecting the reliability of the electrical connection and further affecting the normal progress of the welding operation and the efficiency of the welding. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a welding grounding clamp that can improve the reliability and stability of the electrical connection between the welding grounding clamp and the wire.

[0004] According to the welding grounding clamp of the first aspect of the present application, the two clamping arms are hingedly connected at the middle part, and the two ends of the clamping arm are respectively a clamping end and a pressing end. The two clamping arms generate a clamping force at the clamping end through a clamping spring. Pressing the pressing end can open the two clamping ends. The clamping arm is provided with a wire terminal and a conductive piece arranged at the clamping end. The wire terminal includes a wire post and a wire ring for connecting with the wire and capable of being sleeved into the wire post. The wire post is provided with a limiting piece capable of elastically extending out of the wire post and capable of being retracted into the wire post. When the limiting piece extends, it can limit the wire ring from exiting the wire post. The limiting piece is provided with a pressing piece that elastically presses the wire ring.

[0005] According to the welding grounding clamp of the present application, the wire ring can be quickly loaded by pressing the limiting piece, and the wire ring is limited from exiting. At the same time, the wire ring and the wire post can maintain good electrical communication through the elastic pressing of the pressing piece, and the reliability and stability of the electrical connection are higher.

[0006] According to some embodiments of the present application, the wire post is provided with an inner groove extending in the radial direction thereof, and the limiting piece is slidably arranged in the inner groove. The inner groove is arranged with a limiting spring capable of driving the limiting piece to elastically extend.

[0007] According to some embodiments of the present application, the limiting member is configured with two and oppositely distributed on both sides of the terminal post.

[0008] According to some embodiments of the present application, a limiting structure is arranged between the limiting member and the inner groove, which can limit the limiting member from sliding out of the inner groove completely.

[0009] According to some embodiments of the present application, the limiting member is provided with a sliding groove extending along the axial direction of the terminal post, the pressing member is slidably arranged in the sliding groove, and a pressing spring is arranged in the sliding groove, which can drive the pressing member to extend elastically towards the terminal ring.

[0010] According to some embodiments of the present application, when the pressing member presses the terminal ring, the pressing member is partially located in the sliding groove, and the pressing member blocks the limiting member from sliding into the inner groove.

[0011] According to some embodiments of the present application, the welding ground clamp further comprises a clamping locking mechanism, the clamping locking mechanism comprises a first connecting member and a second connecting member, one end of the first connecting member is rotatably connected to one of the pressing ends, the other end of the first connecting member is rotatably connected to one end of the second connecting member, the other end of the second connecting member is rotatably connected to the other pressing end, the first connecting member is slidably provided with a locking member, when the two clamping arms are opened to a set position, the locking member can be slid to cooperate with the second connecting member to lock the relative position of the first connecting member and the second connecting member, thereby positioning the two clamping arms at the set position.

[0012] According to some embodiments of the present application, a magnet is arranged in the locking member, the first connecting member and the second connecting member are made of magnetic material, and the locking member can be magnetically fixed to the first connecting member or the second connecting member by the magnet.

[0013] According to some embodiments of the present application, when the two clamping arms are opened to the set position, the first connecting member and the second connecting member are linearly distributed, and the locking member can be slidably sleeved on the end of the second connecting member to limit the relative rotation of the first connecting member and the second connecting member, thereby positioning the two clamping arms at the set position.

[0014] According to some embodiments of the present application, the clamping end is provided with an extension structure protruding towards the inside of the clamping, the conductive member is a long metal plate, the metal plate is arched towards the inside of the clamping and is arranged around the extension structure, and both ends of the metal plate are fixed to the clamping end.

[0015] According to some embodiments of the present application, the extension structure comprises two inner extension arms respectively located on both sides of the clamping end and protruding towards the inner side of the clamping end, a support shaft is arranged between the two inner extension arms, the metal plate extends from the clamping end to the support shaft and returns to the clamping end after passing around the outer side of the support shaft.

[0016] According to some embodiments of the present application, the support shaft is in an eccentric structure in cross section, the support shaft is rotatably arranged in the inner extension arm, and the support shaft is provided with a driving structure capable of driving the rotation of the support shaft.

[0017] According to some embodiments of the present application, the driving structure is an inner hexagonal hole arranged at the end of the support shaft.

[0018] According to some embodiments of the present application, the width of the metal plate corresponds to the inner side width of the two inner extension arms.

[0019] The inner side width of the two inner extension arms of one of the clamping ends is greater than the outer side width of the two inner extension arms of the other clamping end.

[0020] According to some embodiments of the present application, the metal plates of the two clamping ends are electrically connected by metal braid. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings in which:

[0022] Figure 1 Structure schematic diagram of the welding grounding clamp of the embodiment of the present application;

[0023] Figure 2 Structure schematic diagram of the welding grounding clamp of the embodiment of the present application;

[0024] Figure 3 Structure schematic diagram of the welding grounding clamp of the embodiment of the present application after hiding the conductive part;

[0025] Figure 4 Structure schematic diagram of the cross section of the wiring terminal of the embodiment of the present application;

[0026] Figure 5 Front view of the welding grounding clamp of the embodiment of the present application;

[0027] Figure 6 Structure schematic diagram of the welding grounding clamp of the embodiment of the present application when the support shaft is arranged in an eccentric structure;

[0028] Figure 7 Structure schematic diagram of the cross section of the contact between the eccentric structure support shaft and the metal plate of the embodiment of the present application.

[0029] Reference signs:

[0030] Clamping arm 100, clamping end 110, pressing end 120;

[0031] Terminal 200, terminal post 210, inner groove 211, limiting piece 220, limiting spring 221, sliding groove 222, pressing piece 230, pressing spring 231, terminal ring 240, connecting post 250;

[0032] First connecting piece 310, second connecting piece 320, locking piece 330, pin 340;

[0033] Metal plate 500, inner extension arm 510, support shaft 520, inner hexagonal hole 521, metal braid 530;

[0034] Auxiliary arm 610, auxiliary shaft 620;

[0035] Clamping spring 900, rotating shaft 910. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0037] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In the description of the present application, if there is a description of first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0039] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0040] The following refers to Figures 1 to 7 A welding ground clamp according to an embodiment of the present application is described.

[0041] As Figures 1 to 3As shown, a welding ground clamp according to an embodiment of the present application comprises two clamping arms 100 hingedly connected at the middle, the two ends of the clamping arm 100 are clamping end 110 and pressing end 120 respectively, the two clamping arms 100 generate clamping force at the clamping end 110 through clamping spring 900, and pressing the pressing end 120 can make the two clamping ends 110 open; the clamping arm 100 is provided with wiring terminal 200 and conductive part arranged at the clamping end 110, the wiring terminal 200 comprises wiring post 210 and wiring ring 240 for connecting with the wire and capable of being sleeved into the wiring post 210, the wiring post 210 is provided with limiting part 220 capable of elastically extending out of the wiring post 210 and capable of being retracted into the wiring post 210, the limiting part 220 can limit the wiring ring 240 from exiting the wiring post 210 when it extends out, and the limiting part 220 is provided with pressing part 230 elastically pressing the wiring ring 240 when it extends out towards the wiring ring 240.

[0042] The wiring ring 240 can be quickly sleeved in by pressing the limiting part 220, and the exiting of the wiring ring 240 is limited, and the wiring ring 240 and the wiring post 210 can maintain good electrical communication through the elastic pressing of the wiring ring 240 by the pressing part 230, and the reliability and stability of the electrical connection are higher.

[0043] Specifically, the wiring ring 240 is connected with the wire of the welding machine through soldering, winding and the like, when wiring, the limiting part 220 is pressed inwards to be retracted into the wiring post 210, the wiring ring 240 passes through the limiting part 220 and is sleeved into the root of the wiring post 210, the limiting part 220 is released and pops out, the limiting part 220 limits the exiting of the wiring ring 240, and at the same time, the pressing part 230 elastically presses the wiring ring 240 to maintain the compactness of the contact, and at the same time, the wiring ring 240 can rotate around the wiring post 210, and when the welding ground clamp adjusts the angle, it can still maintain good electrical connection effect.

[0044] As shown in the drawings, Figure 1 , Figure 2 In some embodiments of the present application, the two clamping arms 100 are relatively distributed, the middle part extends inwards to the hinged part, the hinged part is connected through the rotating shaft 910, and the clamping spring 900 is a torsional spring arranged at the rotating shaft 910, so that when the two pressing ends 120 are pressed, the two clamping ends 110 can be away from each other and open.

[0045] In some embodiments of the present application, the pressing end 120 is sleeved with an insulating sleeve to facilitate the pressing operation of the welding ground clamp by the operator.

[0046] As shown in the drawings, Figure 1 In some embodiments of the present application, the wiring post 210 is fixedly connected to the clamping arm 100 and connected with the conductive part, the clamping arm 100 is made of conductive material such as copper, iron and the like, the wiring ring 240 is elastically pressed to the root of the wiring post 210 and abuts against the clamping arm 100 to maintain good electrical connection effect.

[0047] Specifically, the terminal post 210 is mounted to the clamping arm 100 through a connecting post 250, and the metal plate 500 is fixed, and the connecting post 250 can be mounted to the clamping arm 100 through screws, bolts, or riveting structures.

[0048] It can be understood that in some embodiments of the present application, a receiving step surface corresponding to the terminal ring 240 can be arranged on the terminal post 210, so that the terminal ring 240 is pressed to the receiving step surface of the terminal post 210, and the electrical connection also has higher reliability.

[0049] As shown in Figure 1 , Figure 2 , in some embodiments of the present application, the terminal end 200 is arranged on both clamping arms 100 to facilitate wiring.

[0050] As shown in Figure 4 , in some embodiments of the present application, the terminal post 210 is provided with an inner groove 211 extending in the radial direction thereof, and the limiting member 220 is slidably arranged in the inner groove 211. The inner groove 211 is provided with a limiting spring 221 capable of driving the limiting member 220 to elastically extend out. The limiting member 220 can be kept in the state of extending out of the terminal post 210 by the limiting spring 221. Pressing the limiting member 220 can make it completely retract into the terminal post 210, so as to facilitate the installation of the terminal ring 240.

[0051] Specifically, in order to achieve better electrical connection effect, the terminal ring 240 is arranged to be tightly fitted with the terminal post 210 or only have a small gap. When the limiting member 220 is completely retracted into the terminal post 210, the terminal ring 240 can be sleeved into the terminal post 210 without obstacles. After the terminal ring 240 passes through the limiting member 220, the limiting member 220 can automatically pop out under the action of the limiting spring 221, forming a limiting structure.

[0052] As shown in Figure 4 , in some embodiments of the present application, the limiting member 220 is provided with two limiting members 220 distributed on both sides of the terminal post 210, so as to balance the limiting effect and the pressing effect of the pressing member 230.

[0053] It can be understood that in some embodiments of the present application, the limiting member 220 can be one, three or more, which will not be described in detail here.

[0054] In some embodiments of the present application, the outer end of the limiting member 220 is a sharp structure, so as to facilitate its extension out of the inner groove 211.

[0055] In some embodiments of the present application, a limiting structure capable of limiting the limiting member 220 from completely sliding out of the inner groove 211 is arranged between the limiting member 220 and the inner groove 211, so as to avoid the failure of the limiting member 220 completely separating from the terminal post 210.

[0056] Specifically, the limiting structure can be a limiting step structure, a limiting pin, etc., such as setting an outwardly protruding step at the tail end of the limiting member 220, and setting an inwardly protruding step at the opening of the inner groove 211. The two steps cooperate with each other to limit the limiting member 220 from completely separating from the inner groove 211.

[0057] It can be understood that in some embodiments of the present invention, the limit member 220 can also be configured to be rotatably installed on the outer wall of the terminal post 210, and a recess corresponding to the limit member 220 is provided on the outer wall of the terminal post 210. One end of the limit member 220 can be rotatably connected to the terminal post 210, so that the limit member 220 can be rotated to extend outside the terminal post 210, or rotated into the recess, thereby meeting the avoidance and blocking requirements of the terminal ring 240.

[0058] like Figure 4 As shown, in some embodiments of the present invention, the limiting member 220 is provided with a slide groove 222 extending along the axial direction of the terminal 210, and the pressing member 230 can be slidably set in the slide groove 222. A pressing spring 231 is configured in the slide groove 222 to drive the pressing member 230 to elastically extend toward the terminal ring 240. The pressing spring 231 can make the pressing member 230 elastically pressed against the terminal ring 240, thereby maintaining a better electrical contact effect.

[0059] Specifically, the terminal 210 , the limiting member 220 , and the pressing member 230 are all conductive components, such as metal parts, to maintain the conductive performance of the entire mechanism.

[0060] In some embodiments of the present invention, the pressing member 230 may be a copper column, a copper block, etc., and the abutting end of the pressing member 230 is provided with a smooth transition structure such as a hemispherical shape, so that the wiring ring 240 can rotate smoothly.

[0061] like Figure 4 As shown, in some embodiments of the present invention, when the pressing member 230 presses the wiring ring 240, the pressing member 230 is partially located in the sliding groove 222, and the pressing member 230 prevents the limiting member 220 from sliding into the inner groove 211, thereby reducing the situation where the limiting member 220 accidentally slides into the inner groove 211 and causes the wiring structure to fail.

[0062] It is understandable that in some embodiments of the present invention, the pressing member 230 may be a metal spring disposed on the limiting member 220 , such as a metal spring bent into a V-shape, which can also achieve the effect of pressing the wiring ring 240 .

[0063] like Figures 1 to 3As shown, in some embodiments of the present invention, the welding grounding clamp also includes a clamping locking mechanism, which includes a first connecting member 310 and a second connecting member 320. One end of the first connecting member 310 can be rotatably connected to one of the pressing ends 120, and the other end of the first connecting member 310 can be rotatably connected to one end of the second connecting member 320. The other end of the second connecting member 320 can be rotatably connected to the other pressing end 120. The first connecting member 310 is slidably provided with a locking member 330. When the two clamping arms 100 are opened to the set position, the locking member 330 can slide to cooperate with the second connecting member 320 to lock the relative position of the first connecting member 310 and the second connecting member 320, thereby positioning the two clamping arms 100 in the set position, thereby locking the position of the two clamping ends 110. Even if encountering vibration and impact, the grounding clamp is not easy to fall off, thereby improving the reliability of grounding.

[0064] Specifically, the first connecting member 310 , the second connecting member 320 and the two pressing ends 120 form a four-bar linkage mechanism, so the positions of the two pressing ends 120 can be locked by simply locking the first connecting member 310 and the second connecting member 320 .

[0065] like Figure 1 、 Figure 3 As shown, in some embodiments of the present invention, the first connecting member 310 and the second connecting member 320 are respectively provided with guide grooves extending in the up and down directions, and the locking member 330 includes two plates distributed on both sides of the first connecting member 310 and the second connecting member 320, and the two plates are connected by a connecting portion, and the connecting portion is placed in the guide groove so that the two plates can slide in the up and down directions.

[0066] Specifically, the first connecting member 310 and the second connecting member 320 are both plate structures. When the two plates of the locking member 330 are respectively placed on both sides of the junction of the first connecting member 310 and the second connecting member 320, the rotation of the first connecting member 310 and the second connecting member 320 can be restricted, thereby achieving a locking effect.

[0067] like Figures 1 to 3 As shown, in some embodiments of the present invention, when the two clamping arms 100 are opened to the set position, the first connecting member 310 and the second connecting member 320 are distributed in a straight line, and the locking member 330 can be slidably mounted on the end of the second connecting member 320 to limit the relative rotation of the first connecting member 310 and the second connecting member 320, thereby positioning the two clamping arms 100 at the set position.

[0068] Specifically, the locking member 330 is provided with a recess corresponding to the second connecting member 320, so that the locking member 330 can slide to the end of the second connecting member 320 and be sleeved on the outside of the second connecting member 320, thereby limiting the relative rotation of the first connecting member 310 and the second connecting member 320.

[0069] like Figures 1 to 3 As shown, in some embodiments of the present invention, the locking member 330 can be fixed to the first connecting member 310 and the second connecting member 320 respectively through a pin 340 , thereby positioning the locking member 330 .

[0070] Specifically, the locking member 330 , the first connecting member 310 and the second connecting member 320 are provided with corresponding latch holes.

[0071] In some embodiments of the present invention, the first connecting member 310 or the second connecting member 320 is provided with a plurality of pin holes (not shown in the figure) spaced apart along the up and down directions. By inserting the pins 340 into different pin holes, the locking position of the two pressing ends 120 can be adjusted, thereby adjusting the clamping position of the two clamping ends 110 to adapt to clamped objects of different thicknesses.

[0072] It is understandable that in some embodiments of the present invention, the first connecting member 310 or the second connecting member 320 can be telescopically connected to the pressing end 120 to facilitate adjustment of the clamping position of the two clamping ends 110 when the first connecting member 310 and the second connecting member 320 are locked.

[0073] Specifically, a rotating seat can be rotatably set at the pressing end 120, and the rotating seat is provided with a through hole for the first connecting member 310 or the second connecting member 320 to slide. The rotating seat and the first connecting member 310 or the second connecting member 320 are positioned relative to each other through mechanisms such as ratchets and latches, thereby realizing the adjustment of the connection position of the first connecting member 310 or the second connecting member 320.

[0074] In some embodiments of the present invention, a magnet is provided in the locking member 330, and the first connecting member 310 and the second connecting member 320 are made of magnetic material. The locking member 330 can be fixed to the first connecting member 310 or the second connecting member 320 by magnetic attraction, so that the locking member 330 can be temporarily fixed. In particular, after the first connecting member 310 and the second connecting member 320 are unlocked, the locking member 330 can be temporarily fixed to the upper position of the first connecting member 310 by magnetic attraction to prevent it from accidentally falling and locking the second connecting member 320, affecting the normal opening of the welding grounding clamp.

[0075] like Figure 1 、 Figure 2 As shown, in some embodiments of the present invention, the clamping end 110 is provided with an extension structure protruding toward the inner side of the clamping, and the conductive member is a long metal plate 500, which is arched toward the inner side of the clamping and wrapped around the extension structure. Both ends of the metal plate 500 are fixed to the clamping end 110, and a clamping conductive part is formed by the arched part of the metal plate 500, thereby improving the reliability of the clamping conduction.

[0076] Of course, in a specific implementation process, the conductive member can also be arranged flatly on the clamping end 110, which can also meet the conductivity requirements.

[0077] like Figures 1 to 3 As shown, in some embodiments of the present invention, the extension structure includes two inner extension arms 510 respectively located on both sides of the clamping end 110 and protruding toward the inner side of the clamping end, and a support shaft 520 is arranged between the two inner extension arms 510. The metal plate 500 extends from the clamping end 110 to the support shaft 520 and bypasses the outer side of the support shaft 520 and then returns to the clamping end 110, thereby forming an arched metal plate 500.

[0078] Specifically, the middle part of the metal plate 500 is fixed to the clamping end 110 through the connecting column 250, and then the end extends toward the support shaft 520, bypasses the outside of the support shaft 520 and returns to the clamping end 110, and is fixed to the clamping end 110 through a clamping mechanism, a screw mechanism, a welding structure, etc.

[0079] like Figures 1 to 3 As shown, in some embodiments of the present invention, the inner extension arm 510 is arranged at the outer edge of the clamping end 110, and auxiliary arms 610 protruding toward the inner side of the clamping are respectively arranged on both sides of the middle part of the clamping end 110, and an auxiliary shaft 620 is arranged between the two auxiliary arms 610. The two ends of the metal plate 500 are respectively fixed to the clamping end 110, and the middle part of the metal plate 500 is fixed by the connecting column 250 and electrically connected. The support shaft 520 and the auxiliary shaft 620 are respectively located on both sides of the connecting column 250 to form a double arch structure, which improves the compactness of the mechanism. The metal plate 500 has good stability, which improves the reliability of the electrical connection.

[0080] Specifically, the height of the auxiliary arm 610 is smaller than the height of the inner extension arm 510 to avoid affecting the normal connection function of the inner extension arm 510.

[0081] like Figure 5 As shown, in some embodiments of the present invention, the width of the metal plate 500 corresponds to the inner width of the two inner extension arms 510; the inner width of the two inner extension arms 510 of one clamping end 110 is greater than the outer width of the two inner extension arms 510 of the other clamping end 110, so that the arched metal plate 500 at at least one clamping end 110 is in a state of being directly clamped, so that it maintains good electrical contact with the clamped object.

[0082] Specifically, such as Figure 5As shown, the inner side width of the two inner extension arms 510 of the lower clamping end 110 is greater than the outer side width of the two inner extension arms 510 of the upper clamping end 110, forming a structure in which the inner extension arms 510 are staggered, reducing the influence of the inner extension arms 510 on the clamping conductive structure, so that the metal plate 500 on the support shaft 520 of the lower clamping end 110 is clamped and pressed as a whole by the extension structure of the upper clamping end 110, and can maintain good electrical contact with the clamped object.

[0083] As shown in the drawings, Figure 1 , Figure 2 In some embodiments of the present application, the metal plates 500 of the two clamping ends 110 are electrically connected by metal braid 530, so that the upper and lower metal plates 500 are electrically connected, further improving the reliability of the electrical connection.

[0084] Specifically, the metal braid 530 is woven from conductive metal wires such as copper wires, etc., has a certain flexibility, and has good electrical conductivity, and is used to connect the metal plates 500 of the two clamping ends 110, and is not prone to breaking after long-term use, and has high reliability. In particular, due to the shape of the clamped object, the welding ground clamp may only have one clamping end 110 in good contact with the clamped object. At this time, the metal braid 530 can be used to electrically connect the two clamping ends 110, so that whether the welding machine is connected to the upper or lower terminal 200, it can be electrically connected to the clamped object, thereby improving the reliability of use.

[0085] It can be understood that in some embodiments of the present application, the metal braid 530 can also be replaced by a metal spring, which can also meet the electrical connection requirements of the upper and lower metal plates 500, and also provides a reset elastic force. At this time, the metal spring is arranged on the pressing end 120 to provide an elastic force for clamping the welding ground clamp.

[0086] As shown in the drawings, Figure 6 , Figure 7 In some embodiments of the present application, the support shaft 520 has an eccentric structure in cross section, and the support shaft 520 is rotatably arranged on the inner extension arm 510. The support shaft 520 is provided with a driving structure capable of driving the rotation thereof. By rotating the support shaft 520, the metal plate 500 can be protruded outward by the eccentric protruding part, improving the electrical contact effect with the clamped object. And by rotating the support shaft 520, the metal plate 500 can be tensioned, improving the reliability of the electrical connection.

[0087] Specifically, after frequent clamping, the fixed structure of the metal plate 500 is prone to looseness, or the metal plate 500 is stretched and lengthened (generally, the copper plate has a certain ductility), at this time, the gap between the metal plate 500 and the support shaft 520, the connecting column 250, etc. is prone to be too large, resulting in poor clamping effect or unstable electrical connection. By rotating the support shaft 520, the metal plate 500 is pulled out by the eccentric convex part, the metal plate 500 is tightened, the compactness of the structure is improved, the welding grounding clamp maintains good clamping effect and electrical connection effect, and the service life of the welding grounding clamp is prolonged.

[0088] As shown in Figure 6 In some embodiments of the present application, the driving structure is an internal hexagonal hole 521 arranged at the end of the support shaft 520, so as to facilitate the rotation of the support shaft 520 by an internal hexagonal wrench.

[0089] It can be understood that in some embodiments of the present application, the driving structure can also be a knob, a cross slot, etc., which will not be described in detail here.

[0090] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A welding grounding clamp, characterized in that: include: Two clamping arms (100) are hinged to each other at their middle parts, and the two ends of the clamping arm (100) are respectively a clamping end (110) and a pressing end (120). The two clamping arms (100) generate a clamping force at the clamping end (110) via a clamping spring (900), and pressing the pressing end (120) can open the two clamping ends (110); The clamping arm (100) is provided with a terminal (200) and a conductive member provided at the clamping end (110), the terminal (200) including a terminal post (210) and a terminal ring (240) for connecting to a wire and capable of being inserted into the terminal post (210), the terminal post (210) being provided with a limiting member (220) capable of elastically extending out of the terminal post (210) and retracting into the terminal post (210), the limiting member (220) being able to restrict the terminal ring (240) from exiting the terminal post (210) when extended, and the limiting member (220) being provided with a pressing member (230) extending toward the terminal ring (240) and elastically pressing the terminal ring (240); The terminal (210) is provided with an inner groove (211) extending in its radial direction, the limiting member (220) is slidably disposed in the inner groove (211), and a limiting spring (221) capable of driving the limiting member (220) to elastically extend is disposed in the inner groove (211); The limiting members (220) are provided with two and are relatively distributed on both sides of the terminal (210); A limiting structure capable of limiting the limiting member (220) from completely sliding out of the inner groove (211) is provided between the limiting member (220) and the inner groove (211).

2. A welding grounding clamp according to claim 1, characterized in that: The limiting member (220) is provided with a sliding groove (222) extending along the axial direction of the terminal (210), and the pressing member (230) is slidably arranged in the sliding groove (222). A pressing spring (231) is configured in the sliding groove (222) and can drive the pressing member (230) to elastically extend toward the terminal ring (240).

3. A welding grounding clamp according to claim 2, characterized in that: When the pressing member (230) presses the wiring ring (240), a portion of the pressing member (230) is located in the sliding groove (222), and the pressing member (230) blocks the limiting member (220) from sliding into the inner groove (211).

4. The welding grounding clamp according to claim 1, characterized in that: The invention also includes a clamping and locking mechanism, which includes a first connecting member (310) and a second connecting member (320), one end of the first connecting member (310) can be rotatably connected to one of the pressing ends (120), the other end of the first connecting member (310) can be rotatably connected to one end of the second connecting member (320), and the other end of the second connecting member (320) can be rotatably connected to the other pressing end (120), and the first connecting member (310) can be slidably provided with a locking member (330), and when the two clamping arms (100) are opened to the set position, the locking member (330) can slide to cooperate with the second connecting member (320) to lock the relative position of the first connecting member (310) and the second connecting member (320), thereby positioning the two clamping arms (100) at the set position.

5. The welding grounding clamp according to claim 4, characterized in that: When the two clamping arms (100) are opened to the set position, the first connecting member (310) and the second connecting member (320) are distributed in a straight line, and the locking member (330) can be slidably mounted on the end of the second connecting member (320) to limit the relative rotation of the first connecting member (310) and the second connecting member (320), thereby positioning the two clamping arms (100) at the set position.

6. The welding grounding clamp according to claim 1, characterized in that: The clamping end (110) is provided with an extension structure protruding toward the inner side of the clamping end. The conductive member is a long metal plate (500). The metal plate (500) is arched toward the inner side of the clamping end and is wound around the extension structure. Both ends of the metal plate (500) are fixed to the clamping end (110).

7. The welding grounding clamp according to claim 6, characterized in that: The extension structure comprises two inner extension arms (510) respectively located on both sides of the clamping end (110) and protruding toward the inner side of the clamping end, a support shaft (520) is provided between the two inner extension arms (510), and the metal plate (500) extends from the clamping end (110) toward the support shaft (520) and returns to the clamping end (110) after passing around the outer side of the support shaft (520).

Images