False touch prevention test jointing clamp for quick wiring

Abstract

The invention provides a quick-wiring anti-accidental-touch test jointing clamp, and relates to the field of test jointing clamps. Comprising a spring clamp with an insulated main body and a movable connecting part used for compensating the deviation angle of the spring clamp, a metal conducting strip capable of elastically deforming is installed on the inner side of the clamping end of the spring clamp, in the natural state, the metal conducting strip is contained in the inner side of the spring clamp under the clamping force of the spring clamp, and in the state that the spring clamp is pressed to be opened, the metal conducting strip is fixed. The clamping end of the metal conductive sheet extends out of the outer side of the clamping end of the spring clip, and by using the spring clip with an insulated main body, after the spring clip is accidentally touched to fall off from the circuit board, a metal part on the spring clip cannot be connected with other electrifying bodies for electric conduction, and the situation that the electrifying bodies on the circuit board are accidentally electrified and damaged due to falling off is prevented.

Description

Technical Field

[0001] The invention relates to the field of test wiring clamps, in particular to a test wiring clamp for quick wiring and preventing accidental contact. Background Art

[0002] Alligator clips used for wiring can easily connect wires in a circuit and are widely used in scenarios such as electrical operations, electrical testing, and multimeter testing. They achieve circuit conductivity and connection by clamping the conductor.

[0003] When connecting pins or pins on a circuit board, testers often use alligator clips to clamp onto the conductive parts of the circuit board so that they can operate the equipment hands-free. However, there are many conductive parts on the circuit board, especially the pins and pins are close together, and the alligator clips are often made of copper. Although the outside of the alligator clip is wrapped with a rubber sleeve, the rubber sleeve cannot completely cover the alligator clip, leaving the metal part of the alligator clip exposed. If the alligator clip is accidentally touched, it will fall off the circuit board, which may cause different conductive parts to be accidentally connected, causing a short circuit and damaging the test instrument or circuit board. This is especially true for novices or students who have low proficiency. When using testing equipment such as multimeters, the rate of false touches is high. Professional engineers may also make false touches when operating with one hand due to negligence or emergency repairs. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a test wiring clamp with quick wiring and anti-accidental contact. By using a spring clip with an insulated main body, if the spring clip is accidentally touched and falls off the circuit board, the metal parts on the spring clip will not connect to other conductive objects for conductivity, preventing the conductive objects on the circuit board from being accidentally energized and damaged due to falling off, thereby solving the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a quick-connection test terminal clamp with an anti-accidental-touch feature, comprising a spring clamp with an insulated main body and a movable connection portion for compensating for the offset angle of the spring clamp. An elastically deformable metal conductive sheet is mounted on the inner side of the clamping end of the spring clamp. In a natural state, the metal conductive sheet is accommodated within the inner side of the spring clamp under the clamping force of the spring clamp itself. When the spring clamp is pressed to open, the clamping end of the metal conductive sheet extends outside the clamping end of the spring clamp.

[0006] The movable connection part includes a sleeve, a pull rod slidably connected in the sleeve, and a pull rope fixedly connected to the bottom of the pull rod. The bottom of the pull rope is fixedly connected to the spring clip, and the top of the sleeve is connected to the clamp seat through a gooseneck tube.

[0007] Preferably, the clamping ends of the metal conductive sheets are arc-shaped, and the tips of the clamping ends of the metal conductive sheets contact each other.

[0008] Preferably, the outer side of the clamping end of the metal conductive sheet contacts the clamping end of the spring clip.

[0009] Preferably, a push plate for pushing the metal conductive sheet to move is installed on the inner side of the upper clamping piece of the spring clamp.

[0010] Preferably, the contact surface between the push plate and the metal conductive sheet is arc-shaped. When the spring clip is pressed to open, the arc-shaped portion of the push plate always contacts the center point of the arc-shaped area of the metal conductive sheet facing the push plate.

[0011] Preferably, a clamping groove is provided at the clamping end of the metal conductive sheet, and a rack is provided inside the clamping groove.

[0012] Preferably, a clamping block is installed inside the spring clip to limit the edges of both sides of the metal conductive sheet. The two sides of the metal conductive sheet contact the inner wall of the clamping block and are slidably connected inside the clamping block.

[0013] Preferably, a push rod is provided on the inner side of the upper and lower clamping pieces of the spring clamp to limit the opening angle of the clamping end of the spring clamp.

[0014] Preferably, baffles are installed on both sides of the metal conductive sheet inside the spring clip, and the upper and lower baffles can fully cover both sides of the metal conductive sheet after being matched and connected.

[0015] Preferably, the opening of the clamping end of the clamping seat is provided with an upper and lower symmetrical inclined surface, the clamping end of the clamping seat is provided with a rubber protrusion, and a handle for pulling the clamping seat to open and close is installed on the outer side of the clamping seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By providing a spring clip with an insulated main body and arranging the metal conductive sheet on the inner side of the clamping end of the spring clip, the phenomenon of the exposed metal part of the original alligator clip contacting other pins or pins can be greatly reduced when the spring clip falls off due to accidental contact. When the spring clip falls off the pin or pin due to accidental contact, the clamping end of the spring clip can instantly close under its own elastic force, pushing the metal conductive sheet to move toward the inner side of the spring clip and be stored inside the spring clip, thereby preventing the spring clip that falls from the circuit board from contacting other conductive parts on the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 is a cross-sectional view of the sleeve of the present invention;

[0020] Figure 3 Schematic diagram of the spring clip structure of the present invention;

[0021] Figure 4 This is a diagram of the spring clip of the present invention in a naturally closed state;

[0022] Figure 5This is a diagram of the spring clip of the present invention in a pressed and opened state;

[0023] Figure 6 Schematic diagram of the metal conductive sheet structure of the present invention;

[0024] Figure 7 For the present invention Figure 6 A partial enlarged view of the area at point A.

[0025] Among them, 1. Spring clip; 2. Metal conductive sheet; 3. Sleeve; 301. Pull rod; 302. Pull rope; 4. Gooseneck; 5. Clamp seat; 6. Push plate; 7. Slot; 8. Rack; 9. Block; 10. Push rod; 11. Baffle; 12. Handle. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 7 As shown, a test terminal clamp for quick wiring and preventing accidental contact comprises a spring clamp 1 with an insulated main body and a movable connection portion for compensating for the offset angle of the spring clamp 1. A metal conductive sheet 2 that can be elastically deformed is installed on the inner side of the clamping end of the spring clamp 1. In a natural state, the metal conductive sheet 2 is accommodated on the inner side of the spring clamp 1 under the clamping force of the spring clamp 1 itself. When the spring clamp 1 is pressed to open, the clamping end of the metal conductive sheet 2 extends outward from the clamping end of the spring clamp 1. When the spring clamp 1 is pressed to open, the metal conductive sheet 2 installed on the inner side of the spring clamp 1 can automatically The spring clip 1 is movably extended outside the spring clip 1 so that the spring clip 1 can fully clamp and contact the metal conductive sheet 2 and the current-carrying objects on the circuit board. At the same time, when the spring clip 1 is closed, under the clamping force of the spring clip 1 itself, the clamping end of the spring clip 1 can push the metal conductive sheet 2 to automatically move backward and be re-stored inside the spring clip 1. When the spring clip 1 is accidentally touched during use and falls off, the metal conductive sheet 2 can be isolated from the current-carrying objects on the circuit board, thereby preventing the metal conductive sheet 2 from falling off and contacting other current-carrying objects to cause accidental damage such as short circuits;

[0027] The movable connection part includes a sleeve 3, a pull rod 301 slidably connected in the sleeve 3 and a pull rope 302 fixedly connected to the bottom of the pull rod 301. The bottom of the pull rope 302 is fixedly connected to the spring clip 1, and the top of the sleeve 3 is connected to the clamp seat 5 through the gooseneck tube 4. Through the provided clamp seat 5, the clamp seat 5 can be clamped on the edge of the circuit board, and the gooseneck tube 4 and the spring clip 1 are relatively connected above the circuit board to keep the gooseneck tube 4 stable. The gooseneck tube 4 can be bent arbitrarily, so that the spring clip 1 can be moved to the area on the circuit board where test wiring is required. Since the angle and position of the gooseneck tube 4 will still change slightly after bending, if the spring clip 1 is directly fixedly connected to the gooseneck tube 4, the position of the spring clip 1 will also be offset under the drive of the gooseneck tube 4, which is not conducive to the spring clip 1 being clamped to the conductive body on the circuit board. After the pull rod 301 and the pull rope 302 are set, the pull rod 301 can move up and down on the inner side of the sleeve 3 to adjust the height of the spring clip 1, and the pull rope 302 can pull the spring clip 1 at the same time. It is convenient for the spring clip 1 to be clamped on the pins of the circuit board and other conductive objects at various angles. With the cooperation of the pull rod 301 and the pull rope 302, the offset error of the spring clip 1 can be compensated, so that the spring clip 1 can be connected to the conductive object of the circuit board at a suitable position when operating the spring clip 1. It should be noted that the wire connected to the spring clip 1 passes through the gooseneck tube 4, the pull rod 301 and the inner side of the pull rope 302 and is connected to the metal conductive sheet 2. The area where the wire is connected between the sleeve 3 and the pull rod 301 is spiral. The spiral wire between the sleeve 3 and the pull rod 301 can provide a certain pulling force to the pull rod 301, and can pull the pull rod 301 to move a certain distance inside the sleeve 3. When the spring clip 1 is accidentally touched and falls off the circuit board, it can also prevent the spring clip 1 from falling on the circuit board, thereby improving the safety of the use of the spring clip 1. However, the wire tension in the spiral area is much smaller than the clamping force of the spring clip 1, and has little effect on the clamping force of the spring clip 1, so as to maintain the stability of the spring clip 1 clamped on the conductive object on the circuit board.

[0028] Further,

[0029] In an optional embodiment, the clamping end of the metal conductive sheet 2 is arc-shaped, and the tips of the clamping end of the metal conductive sheet 2 contact each other. When the tips of the metal conductive sheet 2 contact each other, the metal conductive sheet 2 can be easily clamped on a smaller conductive body such as a pin, thereby increasing the pressure of the connection between the metal conductive sheet 2 and the conductive body, and thereby improving the stability of the connection between the metal conductive sheet 2 and the conductive body such as the pin.

[0030] In an optional embodiment, the outer side of the clamping end of the metal conductive sheet 2 abuts against the clamping end of the spring clip 1, and the tip of the clamping end of the metal conductive sheet 2 contacts. Therefore, the outwardly convex arc surface of the metal conductive sheet 2 contacts the clamping end of the spring clip 1. When the spring clip 1 falls off the circuit board, the clamping end of the spring clip 1 can be squeezed on the arc-shaped portion of the clamping end of the metal conductive sheet 2, thereby pushing the metal conductive sheet 2 to move toward the inner side of the spring clip 1 for storage, so that the metal conductive sheet 2 can be isolated from the circuit board, preventing the metal conductive sheet 2 from contacting other conductive bodies on the circuit board.

[0031] In an optional embodiment, a push plate 6 for pushing the metal conductive sheet 2 to move is installed on the inner side of the upper clamping piece of the spring clamp 1. The push plate 6 pushes the metal conductive sheet 2 forward in the process of pressing the spring clamp 1 to open, thereby pushing the clamping end of the metal conductive sheet 2 to the outside of the clamping end of the spring clamp 1, so as to facilitate the metal conductive sheet 2 to fully contact and connect with the conductive body on the circuit board.

[0032] In an optional embodiment, the contact surface between the push plate 6 and the metal conductive sheet 2 is arc-shaped. When the spring clip 1 is pressed to open, the arc-shaped portion of the push plate 6 always contacts the center point of the arc-shaped area of the metal conductive sheet 2 facing the push plate 6. By setting the contact area between the push plate 6 and the metal conductive sheet 2 to an arc, in the process of the push plate 6 pushing the metal conductive sheet 2 to move, the arc-shaped portion of the push plate 6 can continuously push the center point of the arc-shaped area of the metal conductive sheet 2 facing the push plate 6. Therefore, the push plate 6 can be pushed at the center of the metal conductive sheet 2, keeping the metal conductive sheet 2 as a whole moving out synchronously toward the inside of the spring clip 1, instead of the phenomenon that the two clamping ends of the metal conductive sheet 2 cannot be moved out synchronously due to the offset of the pushing position, thereby avoiding the position offset and misalignment of the clamping end of the metal conductive sheet 2 and the inability to effectively clamp the circuit board on the conductive body of the circuit board.

[0033] In an optional embodiment, a slot 7 is provided at the clamping end of the metal conductive sheet 2, and a rack 8 is provided on the inner side of the slot 7. By providing the slot 7 on the metal conductive sheet 2 and providing the rack 8 on the inner side of the slot 7, the metal conductive sheet 2 can be stably clamped on a cylindrical conductive body (such as a pin), and the rack 8 can not only be slightly embedded in the conductive body, but also can pierce the oxide layer on the conductive body, thereby improving the stability of the connection and power supply between the metal conductive sheet 2 and the conductive body, and when the metal conductive sheet 2 is clamped on the conductive body on a planar circuit board (such as a gold finger on a circuit board), the clamping end of the metal conductive sheet 2 can be kept in full contact with the circuit board, thereby reducing damage to the conductive body.

[0034] In an optional embodiment, a clamping block 9 is installed on the inner side of the spring clip 1 to limit the edges on both sides of the metal conductive sheet 2. The two sides of the metal conductive sheet 2 are in contact with the inner wall of the clamping block 9 and are slidably connected inside the clamping block 9. The clamping block 9 can limit the edges on both sides of the metal conductive sheet 2. During the sliding of the metal conductive sheet 2 inside the spring clip 1, the metal conductive sheet 2 can be prevented from angularly deviating inside the spring clip 1, and the clamping end of the metal conductive sheet 2 can be kept accurately moving toward the clamping end of the spring clip 1.

[0035] In an optional embodiment, the inner sides of the upper and lower clamping pieces of the spring clip 1 are provided with a push rod 10 for limiting the opening angle of the clamping end of the spring clip 1. When the spring clip 1 is pressed, the push rod 10 on the inner side of the spring clip 1 can interfere with each other after the spring clip 1 is opened to a certain angle, thereby limiting the opening angle of the spring clip 1. It should be noted that when the spring clip 1 is opened to the maximum opening angle, the clamping end of the spring clip 1 remains in an effective pressing range that can push the clamping end of the metal conductive sheet 2 to move backward for storage, so as to avoid the clamping end of the spring clip 1 from getting stuck on the surface that passes over the effective backward movement of the clamping end of the metal conductive sheet 2, and the spring clip 1 can smoothly guide the metal conductive sheet 2 toward the inside of the spring clip 1.

[0036] In an optional embodiment, baffles 11 are installed on both sides of the metal conductive sheet 2 on the inner side of the spring clip 1. When the upper and lower baffles 11 are connected together, they can fully cover both sides of the metal conductive sheet 2. The baffles 11 can block both sides of the metal conductive sheet 2 so that the metal conductive sheet 2 can be isolated on the inner side of the spring clip 1. When the spring clip 1 falls off from the circuit board, other conductive bodies are prevented from contacting the metal conductive sheet 2.

[0037] In an optional embodiment, the opening of the clamping end of the clamping seat 5 is provided with an upper and lower symmetrical inclined surface, the clamping end of the clamping seat 5 is provided with a rubber protrusion, and a handle 12 for pulling the clamping seat 5 to open and close is installed on the outside of the clamping seat 5. The inclined surface on the opening of the clamping seat 5 can facilitate guiding the clamping seat 5 to move toward the circuit board for clamping, and the rubber protrusion can avoid hard contact between the clamping seat 5 and the circuit board when in contact with the circuit board, thereby preventing the clamping force of the clamping seat 5 from causing damage to the circuit board. By using the handle 12 provided on the outside of the clamping seat 5, when the clamping seat 5 is pushed and installed on the circuit board, if there are electronic components blocking the edge of the circuit board, the clamping seat 5 can be manually opened to clamp the clamping seat 5 on the circuit board. The handle 12 is provided on the upper and lower sides of the clamping seat 5. During operation, the handle 12 can be pulled up and down by two hands to open the clamping seat 5, or two fingers can be inserted into the handle 12 with one hand to drive the handle 12 to open. Figure 1As shown, the distance between the inner walls of the clamp seat 5 is greater than the distance between the inner walls of the open ends of the clamp seat 5. After the clamp seat 5 is clamped on the circuit board, the rubber protrusion of the clamp seat 5 will be clamped on the circuit board, while the inner area of the clamp seat 5 will not contact the circuit board, thereby preventing the clamp seat 5 from pressing on other electronic components and damaging the circuit board after being clamped on the circuit board.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A quick-connection test terminal clamp with an anti-accidental contact feature, characterized in that: The invention comprises a spring clip (1) with an insulated main body and a movable connection portion for compensating for the offset angle of the spring clip (1); a metal conductive sheet (2) capable of elastic deformation is installed on the inner side of the clamping end of the spring clip (1); in a natural state, the metal conductive sheet (2) is accommodated on the inner side of the spring clip (1) under the clamping force of the spring clip (1); and in a state in which the spring clip (1) is pressed to open, the clamping end of the metal conductive sheet (2) extends outward from the clamping end of the spring clip (1); The movable connection portion comprises a sleeve (3), a pull rod (301) slidably connected in the sleeve (3), and a pull rope (302) fixedly connected to the bottom of the pull rod (301); the bottom of the pull rope (302) is fixedly connected to the spring clip (1); and the top of the sleeve (3) is connected to the clamp seat (5) via a gooseneck tube (4).

2. The quick-connection anti-accidental-touch test terminal clamp according to claim 1, characterized in that: The clamping ends of the metal conductive sheet (2) are arc-shaped, and the tips of the clamping ends of the metal conductive sheet (2) are in contact with each other.

3. The quick-connection anti-accidental-touch test terminal clamp according to claim 2, characterized in that: The outer side of the clamping end of the metal conductive sheet (2) contacts the clamping end of the spring clip (1).

4. The quick-connection anti-accidental-touch test terminal clamp according to claim 1, characterized in that: A push plate (6) for pushing the metal conductive sheet (2) to move is installed on the inner side of the upper clamping piece of the spring clamp (1).

5. The quick-connection anti-accidental-touch test terminal clamp according to claim 4, characterized in that: The contact surface between the push plate (6) and the metal conductive sheet (2) is arc-shaped. When the spring clip (1) is pressed and opened, the arc-shaped portion of the push plate (6) always contacts the center point of the arc area of the metal conductive sheet (2) facing the push plate (6).

6. A quick-connection anti-accidental-touch test terminal clamp according to claim 2 or 3, characterized in that: A clamping groove (7) is provided at the clamping end of the metal conductive sheet (2), and a rack (8) is provided inside the clamping groove (7).

7. The quick-connection anti-accidental-touch test terminal clamp according to claim 1, characterized in that: A clamping block (9) is installed inside the spring clip (1) to limit the edges of both sides of the metal conductive sheet (2). Both sides of the metal conductive sheet (2) contact the inner wall of the clamping block (9) and are slidably connected inside the clamping block (9).

8. The quick-connection anti-accidental-touch test terminal clamp according to claim 1, characterized in that: A push rod (10) for limiting the opening angle of the clamping end of the spring clamp (1) is provided on the inner sides of the upper and lower clamping pieces of the spring clamp (1).

9. The quick-connection anti-accidental-touch test terminal clamp according to claim 1, characterized in that: Baffles (11) are installed on both sides of the metal conductive sheet (2) on the inner side of the spring clip (1). After the upper and lower baffles (11) are matched and connected, they can fully block both sides of the metal conductive sheet (2).

10. The quick-connection anti-accidental-touch test terminal clamp according to claim 1, characterized in that: The opening of the clamping end of the clamping seat (5) is provided with an upper and lower symmetrical inclined surface, the clamping end of the clamping seat (5) is provided with a rubber protrusion, and a handle (12) for pulling the clamping seat (5) to open and close is installed on the outer side of the clamping seat (5).

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