JPH0278921A - Fixing force testing device for cable terminal - Google Patents

Abstract

PURPOSE:To take an accurate measurement by rotating a free rotary piece and a power rotary piece and clamping a cable between both, and positioning the cable terminal clamping part on a tangent to the circumferential surface of the power rotary piece. CONSTITUTION:The intermediate part of the cable A1 passes on the top surface of the free rotary piece 240 of a cable terminal clamping part 200, both terminals A1 and A3 are positioned at left and right cable terminal clamping parts 100, and the terminals are clamped between the small-diameter part of a movable piece main body 121 and a fixed piece 110 through the operation of a handle 124. When a driving part 300 is driven, the power rotary piece 230 of the cable clamping part 200 rotates counterclockwise and clockwise through a flange 230. When the power rotary piece 230 rotates counterclockwise, teeth 232 of this rotary piece come close to the left-side guide surface 241 of the free rotary piece 240 to clamp the cable A1 between both, the cable is drawn counterclockwise, and its tensile force is transmitted to a tensile force detection part 400. Then the tensile force when the cable separates from the right-side terminal A2 is detected as fixing force. The test of the right-side terminal A2 is completed and then the motor 301 is reversed to test the fixing force of the left-side terminal A3 similarly.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to an improvement in a test device for measuring the adhesion force of a terminal of an electric wire with a terminal.

B. Conventional technology A conventional electric wire terminal adhesion force testing device supports the middle part of the electric wire with the terminal with a chuck, holds both terminals with separate chucks, and connects the electric wire with a motor mechanism (former) or pneumatic piston cylinder mechanism ( The terminal is pulled from both sides by the latter), and the value measured by the load cell at the time when the terminal is removed from the wire (the former) or the measured value obtained by detecting the air pressure applied to the cylinder with a pneumatic voltage conversion element and converting it into a voltage value (the latter) is used to determine whether the terminal is fixed. I was trying to improve my skills.

C1 Problems to be Solved by the Invention According to the latter, the measured value is shown with an error due to the frictional force of each part, and furthermore, since the friction coefficient of the lubricating oil interposed in each part changes depending on temperature changes, the measured value is changed each time. Accurate measurement values could not be obtained due to changes in the Further, in both the former and the latter, when testing both terminals in one setting operation, two sets of piston cylinder mechanisms or motor mechanisms are required.

The present invention, except for the above-mentioned problems, has I! It is an object of the present invention to provide a test device that allows accurate measurement values to be obtained without any room for interference of frictional force. Another object of the present invention is to provide a device that can test the adhesion strength of both terminals with one setting.

09 Means for Solving the Problems In order to achieve the above object, the configuration of the present invention is as follows.

The first oval configuration includes a wire terminal holding part, a wire holding part, and a driving part that pulls at least one of the wire terminal holding parts,
A tension detection unit is provided between the clamping part and the driving part or between the clamping part and the fixing part, and the TA clamping part is perpendicular to the electric wire stretched between the clamping parts. It includes a drive shaft, a power rotation piece that rotates together with the drive shaft, and a free rotation piece that freely rotates with an electric wire sandwiched between the power rotation piece, and the power rotation piece has a flange. It is attached at a position shifted in the radial direction with respect to the drive shaft through the drive shaft and has a U-shape, the rotation axis side of the drive shaft becomes a U-shaped electric wire clamping surface, and the opposite rotation axis side is concentric with the drive shaft. A state in which the free rotation piece is rotatably attached to the flange or the drive shaft, and the electric wire is held between the power rotation piece and the power rotation piece, which serves as a circumferential wire guide surface. in,
The wire terminal holding portion is located on a tangent to the circumferential surface of the freely rotating piece.

In a second configuration, in addition to the first configuration, the power rotation piece is fixed to a flange.

In a third configuration, in addition to the second oval configuration, the power rotation piece is housed via a flange at a position shifted in the radial direction with respect to the drive shaft without sliding in the radial direction; An arm protrudes from the flange with a gap to the movable piece, and an operating means for reciprocating the rotary piece is provided between the rotary piece and the arm.

In the fourth oval configuration, in addition to the second or third oval configuration, the terminal holding portion includes a fixing piece fixed to the load side of the tension detection portion;
□It includes a movable piece that is biased to sandwich the wire terminal between the fixed piece and is rotatably attached to the load side of the tension detection section, and the movable piece is parallel to the drive shaft. It is supported by a rotation center axis, and the distance from the rotation center axis to the wire terminal clamping surface increases as it goes downward.

In a fifth configuration, in addition to the fourth configuration, the tension detection section is composed of a strain gauge type load cell, the wire terminal holding section is attached to the load side, and the fixed side is fixed to the main body of the device to form a cantilever shape. That is what we are doing.

E1 action The middle part of the electric wire A1 is the freely rotating piece 2 of the electric wire clamping part 200.
40 and both terminals A2. A3 is located in the left and right wire terminal holding parts 100, respectively, and each terminal is held between the small diameter portion of the movable piece main body 121 and the fixed piece 110 by operating the handle 124 in one setting operation.

When the drive unit 300 is activated in this state, the power rotates the power rotation piece 230 of the wire clamping unit 200 to the left or right via the flange 220.

For example, when the power rotation piece 230 rotates counterclockwise,
The teeth 232 of this piece are attached to the left guide surface 241 of the freely rotating piece 240.
, grasp the electric wire Al between them, and pull the electric wire counterclockwise. Then, the tensile force when the electric wire is separated from the right terminal A2 is shown in the tension detection portion 400 as the fixing force. When the adhesion force of one terminal is detected, the drive unit 300 continues to rotate in the reverse direction, and the adhesion force of the remaining one side is detected by the same action, and the adhesion force of both terminals can be measured with one setting operation. Ru.

F. Example Hereinafter, embodiments of the present invention will be described based on an example shown in the drawings. 1 and 2, this device is roughly shown on the left and right sides of the device main body 1 (left and right in FIG. 1, drive shaft 2 described later).
Two electric wire terminal clamping parts 100 are provided symmetrically (left and right facing the end surface of the wire terminal 10), one electric wire terminal clamping part 200 is provided above the middle part of both of these clamping parts, and a wire terminal clamping part 200 is provided between each of these clamping parts. A drive unit 3 that pulls the stretched electric wire in at least one direction.
00, and a tension detection section 400 is provided between both the clamping parts 100, 200 and the driving part 300 or between the clamping part and the fixing part.

Thus, in the wire terminal holding section 100, a rectangular plate main body 111 is fixed as a fixing piece 110 to the load side end of the tension detecting section 400. A cam lift is rotatably supported on a horizontally protruding rotation center shaft 123 on the load side of the tension detection section so as to sandwich the electric wire terminal A2 or 83 between it and the fixed piece 110. A movable piece 120 is provided, which includes a semicircular cam body 121 that gradually increases in size toward the bottom, and a lever-like handle 124 that is integrally formed at the bottom of the semicircular cam body 121. Further, a spring 130 is provided between the movable piece 120 and the tension detection section 400 to apply an initial clamping force to the terminal. The fixed piece 110 and the movable piece 120 each have a terminal A2. Teeth 11 to improve gripability of A3
2,122 are formed.

In the electric wire clamping part 200, a drive shaft 210 is rotatably supported on the apparatus main body 1 so as to be perpendicular to the electric wire A1 stretched between the two clamping parts 100°100.

A power rotation piece 230 is fixed to the drive shaft 210. The power rotating piece has a main body 231 in a crescent shape, and a flange 220.
One or more teeth 232 are provided on the V-shaped clamping surface of the main body 231 on the drive shaft 210 side, which is fixed to the drive shaft 210 at a position shifted in the radial direction.

Further, a freely rotating piece 240 that freely rotates with the electric wire in between as the power rotating piece 230 rotates is rotatably attached to the front end of the drive shaft 210. The free rotation piece 240 has a fan-like shape with two wire clamping surfaces 241 facing the clamping surfaces of the power rotation piece 230.

It has a circumferential surface concentric with the drive shaft 210, and when one (right side) of the clamping surface 241 is located above the horizontal as shown in FIG. 100 is located.

The drive unit 300 includes a worm wheel motor 301, an intermediate shaft 302 parallel to the worm wheel motor 301, a toothed drive pulley 311 attached to the shaft of the motor 301, a toothed driven pulley 312 fixed to the intermediate shaft 30''2, and timing belt 31
3, a worm 321 fixed to the intermediate shaft 302, and a worm 321 that meshes with the worm to rotate the drive shaft 2.
10 and a worm wheel 322 fixed to the second transmission part 320.

The tension detection unit 400 consists of a horizontally long rectangular parallelepiped-shaped strain gauge type load cell, and is located on the left and right legs 1a of the main body of the device,
1a with a gap between them and the rear part of the main body 1 (the rotating piece 240 side of the drive shaft 210 is the front and the other end is the rear)
is fixed to the bottom surface of the

The wire terminal holding portion 100 is connected to the load cell 400.
It is attached to the load-side horizontal lower surface 420 of the device via a bracket 421, and the fixed-side horizontal upper surface 410 is fixed to the device main body 1, forming a cantilever shape.

The manner of use will be explained above.

The middle part of the electric wire A1 is the freely rotating piece 2 of the electric wire clamping part 200.
40 and both terminals A2. A3 is located in the left and right wire terminal holding parts 100, respectively, and each terminal is held between the small diameter portion of the movable piece main body 121 and the fixed piece 110 by operating the handle 124.

When the drive unit 300 is activated in this state, the power rotates the power rotation piece 230 of the wire clamping unit 200 to the left or right via the flange 220.

For example, when the power rotation piece 230 rotates counterclockwise,
The teeth 232 of this piece are attached to the left guide surface 241 of the freely rotating piece 240.
, grips the electric wire A1 between them, pulls the electric wire counterclockwise, and transmits the tensile force to the tension detection section 400.

The tensile force when the electric wire is separated from the right terminal A2 can be regarded as the fixing force.

After the test of the right terminal A2 is completed, the motor 301 is rotated in the reverse direction and the fixing force test of the left terminal A3 is performed in the same manner as described above.

The embodiment shown in FIG. 4 has a structure in which the electric wire is manually gripped. The power rotation piece 230A is a flange 22OA.
In addition, it is slidable in the radial direction of the drive shaft 210 via the rotating piece guide 4, and the drive shaft side has a V-shaped clamping surface. The flange 220A has a sleeve 1-22 L A provided halfway in the radial direction from its outer edge.
An arm 2 that is slidably fitted to the holder is protruded from the holder, and the arm can be attached and detached using a screwdriver (not shown). The arm 2 has a gap with respect to the power rotation piece 230A, and an operating means 3 consisting of a first link 3a, a second link 3b, and a handle 3c integrally projecting from the first link 3a is provided between them. It will be done.

When the first and second links are buckled toward the opposite flange 220A side (FIG. 4) by operating the handle 3c, both rotating pieces 2
A gap was created in 3OA and 2401W1 and the electric wire was inserted.
When the link is buckled toward the flange 220A (not shown), the electric wire is held with a constant force. By changing the position of the arm 2, the clamping force and wire thickness can be changed.

Further, the fifth figure shows another embodiment of a manual structure, in which the operating means 5 has a screw rod 5a screwed into the arm 2 by operating a rotary handle 5b, and can be moved up and down together with a power rotation piece 230B. It's something. It can respond to changes in clamping force and wire thickness by changing the amount of rotation of the handle.

The spring 130 can be omitted if the center of gravity of the movable piece 120 of the terminal clamping portion is offset from the rotation center axis 123 so that an initial clamping force is generated when the terminal is clamped.

The present invention is not limited to the embodiments and examples described above, but includes various modifications without departing from the scope of the claims.

G. Effects of the Invention Due to the first configuration, there is no room for errors due to friction of various parts of the device to intervene, and accurate measurements can be made.

With the second configuration, as the power rotation piece rotates, the free rotation piece is pressed on one side and rotates, but is pulled downward by the electric wire on the other side, so the rotation angle of the power rotation piece As the amount increases, the wire clamping force increases more and more.

Due to the third full configuration, the direction of the wire pulling force to the tension detection section is constant, allowing accurate measurement. However, both terminals of the wire can be measured under the same conditions using one set of power sources.

The fourth Ill configuration allows electric wires of various thicknesses that are thinner than the gap width between the power rotation piece and the free rotation piece to be automatically clamped as the power rotation piece rotates.

With the fifth configuration, even if the electric wire is once clamped and the power rotation piece is being rotated, if there is an abnormality in the clamping state of the electric wire or its terminal, the clamping can be immediately released manually.

With the sixth configuration, when a tensile force is applied to the wire with the terminal being clamped with a small initial clamping force, the movable piece rotates in the direction in which the clamping surface rises, and the pressing force of the clamping surface against the fixed piece is applied. increases, and the terminal clamping force increases more and more.

With the seventh configuration, the terminal adhesion force (wire pulling force) can be directly detected regardless of external error factors such as frictional resistance.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing one embodiment of the present invention, and FIG.
The figure is a partially cutaway right side view, FIG. 3 is a front view of the freely rotating piece in operation, FIG. 4 is a perspective view of another embodiment of the wire clamping part, and FIG. 5 is another embodiment. FIG. A... Electric wire with terminal, A1... Electric wire, A2. A3...
・Terminal 1...Device main body 100...Wire terminal holding part 110...Fixed piece 111...Body 112...Teeth 120...Movable piece 121...Body 122...Teeth 123...Shaft 124...Shaft 130...Spring 200...Wire clamping part 210...Drive shaft 220...Flange 230...Power rotation piece 231...Body 232...Teeth 240... Free rotation piece 241... Wire guide surface 300... Drive section 301... Motor 302... Intermediate shaft 310... First conduction section 311... Drive pulley 312... Followed pulley 313... ... Belt timing 320 ... Flange second conduction section 321 ... Worm 322 ... Wheel 400 ... Tension detection section 410 ... Fixed side surface 420 ... Load side upper surface 421 ... Bracket 220A. ...Flange, 221A...Slit, 2.
- Arm, 3... Operating means, 3a... First link,
3b...Second link, 3c...Handle, 23OA
... Power rotating piece, 4... Rotating piece guide, 5... Operating means, 5a... Threaded rod, 5b... Handle, 230
B...Power rotating piece patent applicant Kyoei Control Equipment Co., Ltd.

Claims (5)

[Claims] (1) In a device having a wire terminal clamping part, a wire clamping part, and a driving part that pulls at least one of the wire terminals, tension is detected between the clamping part and the driving part or between the clamping part and the fixing part. The electric wire clamping part is provided with a drive shaft that is perpendicular to the electric wire stretched between the two clamping parts, a power rotation piece that rotates together with the drive shaft, and a power rotation piece that rotates together with the drive shaft. and a free rotation piece that freely rotates with an electric wire sandwiched between the power rotation piece and the drive shaft, and the power rotation piece is attached via a flange at a position offset from the drive shaft in the radial direction, and has a U-shape. present,
The rotation axis side of the drive shaft becomes a U-shaped wire clamping surface,
The side opposite to the rotation axis becomes a circumferential electric wire guide surface concentric with the drive shaft, and the free rotation piece is rotatably attached to the flange or the drive shaft, and the power rotation piece rotates and rotates between them. An apparatus for testing the adhesion force of an electric wire terminal, characterized in that the electric wire terminal holding part is located on a tangent to the circumferential surface of the power rotating piece with the electric wire being held between them. (2) The electric wire terminal fixing force test device according to claim 1, wherein the power rotation piece is fixed to a flange. (3) The power rotating piece is attached via a flange to a position radially shifted from the drive shaft so as to be slidable in the radial direction, and the arm is attached with a gap to the rotating piece. 2. The wire terminal fixing force testing device according to claim 1, further comprising an operating means projecting from the flange and reciprocating the rotating piece between the rotating piece and the arm. (4) The terminal clamping section is biased to clamp the electric wire terminal between a fixed piece fixed to the load side of the tension detection section and the fixed piece, and is biased toward the load side of the tension detection section. a movable piece that is rotatably mounted, the movable piece is supported by a rotation center axis that is parallel to the drive shaft, and the distance from the rotation center axis to the wire terminal clamping surface increases as it goes downward. The wire terminal adhesion force testing device according to claim 1, 2 or 3. (5) The tension detection section is comprised of a strain gauge type load cell, the wire terminal holding section is attached to the load side, and the fixed side is fixed to the main body of the device to form a cantilever shape. 6. The wire terminal adhesion force test device according to 6.