JP2908008B2 - Connector insertion / extraction force measurement method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for measuring the insertion / extraction force of a connector.

[Prior Art] FIGS. 3 (a) to 3 (c) show a conventional method for measuring the insertion / extraction force of a connector of this type.

In the same figure, 50 is a spring mechanism type load measuring device, provided with a pushing protrusion 51 for measuring the insertion force at one end, and a tension protrusion 52 for measuring the removal force at the other end, and an insertion force in the middle, It has a load meter 50a for measuring the removal force.

Reference numeral 20 denotes a header, which is formed of a substantially box-shaped molding material such as a synthetic resin. A plurality of contact pins (not shown) are planted on the bottom of the upper box, and the lower part is fixed by a fixing base 22.

Reference numeral 10 denotes a socket, which is formed of a molding material such as a synthetic resin, has a flange portion 10a on the outside, and has a contact terminal (not shown) connected to a contact pin of the header 20 inside.

A connector is constituted by the socket 10 and the header 20 as a set, and is generally mounted on a pair of printed circuit boards or the like, and is used when a connection between electric circuits provided on both of them is made.

When the insertion force is measured by using the load measuring device 50, as shown in FIG. 3A, the holding base 40 having a length equal to or longer than that of the socket 10 is attached to the pushing protruding piece 51. ,
The socket 10 placed on the header 20 is pushed in by the tapered tip 40a of the holding base 40, and the insertion force until the socket 10 is completely inserted into the header 20 is measured by the load meter 50a.

Next, when the removal force is measured, as shown in FIG. 4B, the load measuring device 50 is turned upside down, and the pulling projection 52 is hooked on the tip of the pulling projection 52 toward the socket 10 side. Attach the pin 53 and hook the removal wire 54 engaged with the flange 10a of the socket 10 by hooking the pin 53, set the load measuring device 50 upward, and pull the load meter 50 upward.
With reference to 50a, the removal force until the socket 10 comes off from the header 20 is measured.

[Problems to be solved by the invention]

The insertion / extraction force measurement method described in the conventional example is based on the holding base 40 attached to the load measuring device 50 and the wire for removal.
54 has the advantage that the insertion / extraction force can be measured, and a large-scale measuring device is not required.

However, it is necessary to replace the presser base 40 and the wire 54 at the time of insertion force measurement and at the time of removal force measurement, respectively. However, there is a problem that the measurement value is complicated and the measurement value is apt to vary due to replacement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and has been improved. It is an object of the present invention to provide a method for measuring the insertion / extraction force of a connector which can easily and stably measure the insertion / extraction force.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a main body block having a projection attached to one of the load measuring devices and having the other inserted between the contact terminals during insertion force measurement and pressing the socket. The body block has a pair of arms that are rotatably hung on the main body block, the center of rotation of which is provided at substantially the same dimension as the end of the collar, and an inclined surface inward of the arms. An insertion / extraction force measuring device provided with a projection having
The inclined surface of the projection is in line contact with the corner of the flange of the socket, the arms are expanded outward, the socket is inserted into the header, and the insertion force is measured by the load measuring device. After the insertion with the header is completed, when the socket is moved upward and removed from the header, the expanded arms return to their original positions, the upper ends of the projections engage the flanges of the socket, and the socket is removed by the arms. Then, the removal force is measured by the load measuring device.

(Operation)

A main body block provided with a protruding portion which is attached to the load measuring device and inserted between the contact terminals when the insertion force is measured on the other side and presses the socket, and is rotatably hung down on the main body block, An insertion / extraction force measuring device having a pair of arms each having a center of rotation provided at substantially the same dimensional position as an end of the collar, and having a projection having an inclined surface inside the arm. When the main body block is moved downward when measuring the insertion force,
The inclined surface of the projection is in line contact with the corner of the flange of the socket, the arms are expanded outward, the socket is inserted into the header, and the arms are not obstructed, and the load is reduced. Since the insertion force can be measured with a measuring instrument, the insertion force can be easily measured. After the insertion of the socket and the header is completed, the socket is moved upward and removed from the header. The upper end of the projection engages with the flange of the socket, and the socket is pulled out by both arms, so that the pulling-out force can be easily measured.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a connector insertion / extraction force measuring device used in the present invention. The measuring device comprises a main body block 1, both arms 2, 3, projections 4, 5, and a strain gauge type load measuring device. And a vessel 7.

In the same figure, reference numeral 10 denotes a socket, which is made of a molding material such as a synthetic resin having a flange portion, and has a plurality of contact terminals.
11 are planted in two rows.

Reference numeral 20 denotes a header, which is formed of a molded material such as a synthetic resin having a substantially box shape, a plurality of contact pins 21 connected to the contact terminals 11 are implanted from the bottom of the box, and a recess on one side is fixed to a fixing base 30. And the other side is sandwiched and fixed by the positioning plate 22.

Note that both the socket 10 and the header 20 constitute a connector as a set, and are generally mounted on separate printed circuit boards (not shown), and are used for connecting electric circuits formed on both printed circuit boards. Things.

The main body block 1 is formed of a rigid body made of a substantially rectangular parallelepiped metal or the like.
Grooves 1a, 1a which are attached to the engaging pieces 7a and extend in the longitudinal direction respectively on both side surfaces. A plurality of comb-shaped protruding portions 6 are formed below the main body block 1, and are inserted between the plurality of contact terminals 11 of the socket 10 at the time of measuring the insertion force. The socket 10 is pressed.

The arms 2 and 3 have substantially L-shaped arms 2a 'and 2b' slidably engaged with grooves 1a and 1a provided on both side surfaces of the main body block 1, respectively. Arm 3
a ', 3b', each arm 2a ', 2b', 3a ', 3
The portions b are connected by protrusions 4 and 5, respectively.

The projections 4 and 5 have a substantially columnar shape, and are provided with notches 4a and 5a, respectively, which are cut out at right angles from the center on the inner surfaces thereof. The upwardly facing surfaces of the notches 4a, 5a are provided in parallel with the flange portions 10a so as to be respectively engaged with the flange portions 10a, 10a of the socket 10, and the lower surfaces 4 of the projections 4, 5 are provided.
The b and 5b (surfaces that come into contact with the corners of the collar portion 10a during the downward operation) are circular arc surfaces (inclined surfaces).

In addition, as shown by the arm part 2 in FIG. 2, the respective arm parts are formed by a cylindrical projection 2a and a stopper rib 2b.
It is slidably locked in the groove 1a.

Next, regarding the process of measuring the insertion / extraction force, FIG.
A description will be given based on (d). The arm 3 is the same as the arm 2 described with reference to FIG.

First, when measuring the insertion force, as shown in FIG. 3A, the socket 10 is positioned and placed on the header 20 in advance, and the rotation of the cylindrical projection 2a of the arms 2 and (3) is performed. Position the center 2c at the end (corner) of the flange 10a of the socket 10.
The main body block 1 is lowered from above the socket 10. Then, as shown in FIG.
When the inclined surface 4b (arc surface) on the lower surface of the projection 4 comes into line contact with the corner of the flange 10a, and further lowered, the comb-shaped projection 6 provided on the main body block 1 comes into contact with the socket 10, The socket 10 is pressed and inserted into the header 20. In this state, the insertion force is measured by the load measuring device 7 shown in FIG.

At this time, since the protrusion 4 escapes outward along the outer surface of the collar portion 10a, the arm portion 2 expands around the rotation center 2c so as not to affect the load measurement at the time of insertion. Has become.

When the main body block 1 is further lowered, the socket 10 moves to a position where it is completely inserted into the header 20, and a predetermined insertion force can be measured.

Next, in order to measure the removal force, the main body block 1 is pulled up together with the load measuring device 7, and the arm 2 will return to its original naturally suspended state by gravity about the rotation center 2c. Since the projection 4 comes to the position shown in FIG. 4C, the upper end of the notch 4a of the projection 4 engages with the collar 10a so as to be hooked. When the socket 10 is further pulled up in this state, the socket 10 is pulled out of the header 20 by the arms 2 and 3 as shown in FIG.

As described above, the load measuring device 7 with the main body block 1 attached thereto.
It is possible to easily measure the insertion / extraction force by operating up and down once.

Note that the lower surface 4b of the projection 4 is used to
Is not limited to an arc surface, but may be, for example, a side of a triangle.

〔The invention's effect〕

As described above, the present invention provides a main body block having one projection attached to a load measuring device and the other having a projection inserted between contact terminals and measuring the insertion force to press the socket. The arm has a pair of arms which are rotatably hung on a block, the center of rotation of which is provided at substantially the same dimension as the end of the collar, and which has an inclined surface inside the arm. An insertion / extraction force measuring device equipped with a projection is provided, and when the main body block is moved downward when measuring the insertion force,
The inclined surface of the projection is in line contact with the corner of the flange of the socket, the arms are expanded outward, and the socket is inserted into the header so that the arms are not in the way. Since the insertion force can be measured with a measuring instrument, the insertion force can be easily measured. After the insertion of the socket and the header is completed, the socket is moved upward and removed from the header. The upper end of the protrusion engages with the flange of the socket, and the socket is pulled out by the arms, so that the pulling-out force can be easily measured, and therefore, as in the prior art. It is not necessary to provide a dedicated measuring jig when measuring the insertion force and removal force, and the insertion / extraction force can be measured simply by raising and lowering the load measuring device once. A measurement can be made.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIGS. 2 (a) to 2 (d) are side views of relevant parts showing a process of measuring the insertion / extraction force of the same, respectively, and FIG. 3 (a). FIG. 3B is a side view showing a state of measuring the insertion force of the conventional example, FIG. 3B is a side view showing a state of measuring the removal force according to the first embodiment, and FIG. It is. 1 ... body block, 2, 3 ... arm, 2c ... center of rotation, 4, 5 ... projection, 4b ... inclined surface, 6 ... projection, 7 ... strain gauge type load measuring instrument, 10: Socket, 10a: Collar, 11: Contact terminal, 20: Header, 21: Contact pin.

Claims (1)

(57) [Claims] 1. A connector comprising a fixed header having a plurality of contact pins protruding upward, a contact terminal provided with contact terminals connected to the contact pins, and a socket having a flank portion inserted and removed from the header. A strain gauge-type load measuring device for measuring an insertion force and a removal force between the socket and the header, one of which is attached to the load measuring device and the other is inserted between the contact terminals when measuring the insertion force. A main body block provided with a protrusion for pressing the socket, and a pair of arms suspended from the main body block so as to be rotatable and provided with rotation centers at substantially the same dimensions as the ends of the collar portion. An insertion / extraction force measuring device provided with a projection having an inclined surface inside the arm portion, and when the main body block is moved downward at the time of measuring the insertion force, the inclined surface of the projection is bent. In line contact with the corner of the door of the flange portion,
The arms are expanded outward, the socket is inserted into the header, and the insertion force is measured by the load measuring device. After the insertion of the socket and the header is completed, the socket is moved upward and removed from the header. The connector wherein the opened arms return to the original state, the upper end of the projection is engaged with the flange of the socket, the socket is removed by the arms, and the removal force is measured by the load measuring device. Insertion / extraction force measurement method.