CN102565464A

CN102565464A - Self-locking type electric test clamp

Info

Publication number: CN102565464A
Application number: CN201010604232XA
Authority: CN
Inventors: 白钰; 林日国; 伍云贵
Original assignee: Beijing Ruiyang Anke Technology Co Ltd
Current assignee: Beijing Ruiyang Anke Technology Co Ltd
Priority date: 2010-12-24
Filing date: 2010-12-24
Publication date: 2012-07-11

Abstract

The invention provides a self-locking type electric test clamp, which can be used for preventing the clamp from loosening and falling due to accidental collision in the testing process to influence an experiment, and even cause dangers. The self-locking type electric test clamp comprises an upper clamping sheet, a lower clamping sheet, a torque spring, a shaft and a sliding block, wherein tail ends of the upper clamping sheet and the lower clamping sheet are drilled with round holes; the shaft passes through the round holes and is pivoted at two ends; the torque spring is sleeved on the shaft, and the upper clamping sheet and the lower clamping sheet have an opening tendency under the elastic action of the torque spring; two sides of the lower clamping sheet are provided with slotted holes, and the sliding block can slide on the slotted holes; and the two clamping sheets are closed when the sliding block slides in a direction away from the shaft and are opened when the sliding block moves backwards. The clamp can be opened to a certain angle and is fixed when not being used for clamping an electrode; and the clamp has a self-locking function after being used for clamping the electrode, and is not easy to loosen by external force as long as not moving the sliding block.

Description

Self-locking electric test clip

Technical field

The present invention relates to a kind of electric test clip,, be difficult for during holding electrode unclamping also not opening an angle and fixing in the holding electrode with self-locking structure.

Background technology

Traditional electric test clip, the power of generally all utilizing camber of spring to recover to be produced is come clamping electrode.The clamp force rate that has is less, the easy like this chuck of opening, but clamp behind the electrode because force rate is less, when operation, run into clip because of carelessness, chuck is easy to unclamp and drops, the carrying out even the initiation potential of influence experiment; The clamp force rate that has is bigger, just needs bigger power just can open chuck, even the situation that the clip that also is difficult to like this to avoid accidental collision drops takes place.

Summary of the invention

Shortcoming to above-mentioned clip the invention provides little, the easy clamping of a kind of clamping force, but the clip that chuck is difficult for unclamping.Clip is made up of last holding piece, following holding piece, torsion spring, axle and sliding shoe.The end of last holding piece and following holding piece is equipped with circular hole; Axle passes circular hole and the riveted joint at two ends, is with torsion spring on the axle, and holding piece has the trend of opening up and down under the elastic force effect of torsion spring; Following holding piece both sides belt length circular hole; Sliding shoe can slide on slotted hole, and two holding pieces merge when sliding away from direction of principal axis, open when returning.Sliding shoe receives down holding piece and points to the power F that sliding shoe bottom surface circular arc points to the center of circle perpendicular to the downward anchorage force N of end face with friction force f that is parallel to end face and last holding piece; In the certain angle scope; Friction force f increased in proportion when power F increased; The component of power F on the sliding shoe upper surface is less than friction force f, and sliding shoe is realized self-locking.So described clip also can open certain angle and fixing, convenient operation when holding electrode not; The clamping thing has auto-lock function later on, only otherwise move sliding shoe, also is difficult for unclamping even receive external force.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is following holding piece vertical view;

Fig. 3 is following holding piece front view;

Fig. 4 is last holding piece vertical view;

Fig. 5 is last holding piece front view;

Fig. 6 is the sliding shoe synoptic diagram;

Fig. 7 is the sliding shoe right view.

Among the figure: 1 time holding piece, 2,3 torsion springs, holding piece on 4,5 sliding shoes

Embodiment

Shown in accompanying drawing 1; Distance between the both sides of following holding piece is bigger slightly than last holding piece both sides; To go up holding piece and place down between the holding piece both sides, sliding shoe is installed in down in the long slot bore on the holding piece both sides, torsion spring places two holding pieces inner; And then pass the center of two holding pieces and torsion spring spiral part to axle, the two ends riveted joint of axle.Move the least significant end of sliding shoe to long slot bore, chuck is opened under the effect of spring force, pushes away movable block forward, and the subtended angle of chuck diminishes along with moving of sliding shoe gradually, stops to move sliding shoe, and the subtended angle of chuck remains unchanged.Chuck is clipped on the electrode, sliding motion block forward, up to electrode is clamped, clip clamps electrode under the self-locking structure effect.

Claims

1. a clip is made up of last holding piece, following holding piece, torsion spring, axle and sliding shoe, it is characterized in that:

1), go up holding piece and form by the panel beating flange, its front end both sides band tooth, and the height two ends are arranged is used for the electrode or the lead of clamping different-diameter, the rear end has circular hole, is used for and following holding piece links two sides with holes keeping parallelism;

2), down holding piece is formed by the panel beating flange, tooth is worn in the front end both sides, cooperates interlock with last holding piece, two sides, middle part keeping parallelism, and have long slot bore with certain angle of inclination;

3), axle passes the hole of two holding pieces and the threaded hole of torsion spring, the two ends riveted joint can be pivoted holding piece;

4), torsion spring two contacts with two holding pieces, two holding pieces are opened trend under the elastic force effect of torsion spring;

5), sliding shoe is installed in down in the middle of two long slot bores of holding piece, the both sides convexity is slided in long slot bore, its bottom surface is circular-arc, contacts with last holding piece tangential, the angle between two holding pieces can change along with moving of sliding shoe.

2. clip according to claim 1 is characterized in that: go up holding piece and under the effect of torsion spring and sliding shoe, can open an angle and fixing.

3. clip according to claim 1 is characterized in that: holding piece forms self-locking structure in the certain angle scope up and down, and when clip received external force, only otherwise move the external of sliding shoe, clip can be clamped gripping object inflexibly, can not become flexible.

4. clip according to claim 1, holding piece also can be processed by working of plastics about it.

5. the method that clip according to claim 1, its torsion spring effect also can be employed in two holding piece center fixed stage clips replaces.