JP2009063293A - Clip-type inspection jig and mechanism for retaining open state of clip used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily attach and remove a clip-open-state-retaining mechanism to and from a clip-type inspection jig body. <P>SOLUTION: The clip-open-state-retaining mechanism (600) presses an operating part (452) of the clip-type inspection jig body (400) to the side of a substrate (300) and retains an open state, between the substrate and the tip of the clip-type inspection jig body. The clip-open-state-retaining mechanism is provide with base frames (610R and 610L), provided for the substrate in such a way as to be freely detachable; a lever (630) provided with an operating part (634) at its first end; a link (640), freely rotatively provided to a second end of the lever; and a pusher (650) having one end freely rotatively coupled to the second end of the lever. The pusher is moved vertically by the rotating operation of the lever via the link so as to press the operating part (452) and to release it from being pressed against. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a clip-type inspection jig used for inspecting a module to which a printed wiring board such as FPC (flexible printed circuit) or FFC (flexible flat cable) is connected. The present invention relates to a clip open state holding mechanism for holding the open state of the above.

  Examples of modules to be inspected include a liquid crystal display (LCD) and a charge coupled device (CCD). A printed wiring board such as an FPC or FFC is connected to such a module. When inspecting such a module, a clip-type inspection jig is used to electrically connect terminals (terminal electrodes) disposed at the end of the printed wiring board to an inspection tester. The printed wiring board is called an inspection side substrate or an inspection object.

  This type of clip-type inspection jig has an advantage that an inspection object can be electrically connected to an inspection tester simply by picking a so-called laundry scissors. Such a clip-type inspection jig includes a rotation shaft (oscillation shaft), a clamping portion provided on the first end side with respect to the rotation shaft, and a second shaft with respect to the rotation shaft. And an operation unit provided on the end side (the side opposite to the first end side). The clamping unit is for inserting and clamping the inspection object. Here, “clamping” means supporting in a sandwiched state. The clamping portion is always urged in the closing direction by the urging means. Here, “biasing” means that momentum is applied. By pressing the operation part, the holding part is opened, and the inspection object is inserted into the holding part in the open state, and the pressing operation on the operation part is released, so that the holding part is closed and the holding part is Insert the object to be inspected. As a result, the inspection object can be electrically connected to the inspection tester. Therefore, in a state where the operation unit is not operated (that is, a state where the operation unit is not pressed), the clamping unit is in a closed state. In addition, since an inspection object is inserted into the clamping unit, the clamping unit is also referred to as an insertion unit.

  Various clip-type inspection jigs having such a configuration have been conventionally proposed. For example, Patent Literature 1 discloses a connection jig for electrically connecting first and second connection target plates via an electrical connector. The first connection target board may be a flexible printed circuit (FPC), and the second connection target board may be a printed circuit board. The first connection object plate is an inspection object. An input / output interface connector is mounted on the top surface of the printed circuit board. The input / output interface connector and the inspection tester are connected by a cable.

  A connecting jig disclosed in Patent Document 1 includes a base mounted on an upper surface of a printed circuit board, a cover that covers the base, a shaft that rotatably supports the cover, and a shaft that prevents the shaft from being pulled out. A retaining ring, a pair of first coil springs that push up the cover, a pusher that is held by the cover and presses the flexible printed circuit toward the electrical connector, a pair of second coil springs that pushes up the pusher, and a base On the front side, it has an inner frame built into the base. Here, “pressing” means pressing and pressing. The shaft serves as a pivot axis. The cover has a push plate behind it. Therefore, this push plate functions as the operation unit. The pusher sandwiches a flexible printed circuit (FPC) with a printed circuit board via an electrical connector. Therefore, the combination of the pusher and the printed circuit board acts as the holding portion.

  Further, Patent Document 2 discloses an “inspection apparatus” for connecting an inspection object and a substrate with a connector, which is easy to inspect and accurate in alignment without visual alignment. Yes. The inspection apparatus disclosed in Patent Document 2 includes a substrate, a base on which the substrate is placed, a connector for connecting the inspection object and the substrate, an inner frame that holds a connector, and an inner frame. A pusher that is slidably held, a base, an operation member that is rotatably supported by the base and presses the pusher, a first elastic member that constantly urges the operation member in the pressing direction of the pusher, and the pusher A second elastic member that is constantly urged in a direction opposite to the pressing direction. The inner frame and the pusher cooperate to guide and position the insertion of the inspection object. When inspecting the inspection object, the operation member is operated against the bias of the first elastic member, the pusher is slid in the direction opposite to the pressing direction by the second elastic member, and the inspection object is used as the pusher. After the insertion, the operation of the operation member is released. The operation member functions as the operation unit. An operating member is attached to the base so as to be rotatable about a shaft. Therefore, the shaft serves as the rotation axis. And the combination of a pusher and a board | substrate acts as the said clamping part.

  In any case, in the clip-type inspection jig as disclosed in Patent Document 1 and Patent Document 2, the clamping unit is in a closed state in a state where the operation unit is not operated (that is, a state where the operation unit is not pressed). In other words, unless the operator (operator) operates the operation unit, the clamping unit is maintained in a closed state. Therefore, in order to hold the holding part in the opened state, it is necessary for the operator (operator) to keep pressing the operation part. When the operator (operator) releases the pressing operation on the operation unit, the clamping unit is restored to the closed state (returned).

  However, depending on the application, it may be more convenient for the operator (operator) to hold the state where the clamping unit is opened even after the operation unit is pressed once to release the operation. The reason will be described. When using the above clip-type inspection jig, a person (operator; operator) operates the operation part with one hand to open the clamping part, and inserts the inspection object into the clamping part with the other hand. Work to do. Here, there is no problem when the inspection object can be handled with one hand. However, if the size of the module to be inspected is large or the shape of the inspection object is complicated, the inspection object must be handled with both hands. In such a situation, when using the clip type inspection jig, at least two operators (operators) are required, which is inconvenient. Therefore, once the operation unit is released by simply operating the operation unit, the clip type inspection jig can be used by one operator if the holding unit can be kept open.

  Therefore, a mechanism for holding the holding portion in an open state is required. Such a mechanism is called a clip open state holding mechanism.

  Various clip-type inspection jigs that can hold the holding portion in an open state, that is, have a clip open state holding mechanism are also known. For example, Patent Document 3 discloses a “board connector” in which a force in a displacement direction does not act on a probe that elastically contacts a terminal electrode of a flexible board. Here, “elastic contact” refers to elastic contact. The board connector disclosed in Patent Document 3 includes a main body block and a slide block. The main body block and the slide block are relatively close to and separated from each other in the axial direction by a linear shaft. A spring is contracted between the main body block and the slide block. A portion of the terminal electrode of the flexible substrate is arranged on the main body block on a plane orthogonal to the axial direction. A plurality of probes are provided in parallel with the axial direction facing the terminal electrode on the slide block. One end of the engaging lever is swingable with respect to the main body block. An engagement protrusion for engaging the engagement lever is provided on the slide block. An engagement spring that elastically biases the engagement lever in the engagement direction is provided. The slide block is pushed down to be close to the main body block, and the probe is brought into elastic contact with the terminal electrode. The engagement lever is in the engaged state and maintains the proximity state. Note that “engagement” means engagement, that is, two objects mesh with each other.

  In Patent Document 3, the slide block is provided with a lead-out substrate on the surface opposite to the main body block. A lead-out pattern is formed on the lead-out substrate. The other end of the probe is electrically connected to the derivation pattern. The lead-out substrate is electrically connected to an electronic device such as another inspection device as appropriate. The lead-out substrate is provided with a cover so as to cover the lead-out pattern in order to protect it. The main body block, the slide block, the lead-out substrate and the cover are provided with a space portion penetrating in the axial direction at a substantially central portion. An engagement lever is provided in this space.

  Patent Document 4 discloses a “clip-type relay connector” that reliably maintains the open state of an insertion portion (clamping portion) that inserts and clamps an inspection-side substrate (inspection object). The clip-type relay connector disclosed in Patent Document 4 includes insulating first and second bases that are swingably disposed on a support shaft, and an elastic member. Here, “swing” means to swing. On one side of the support shaft, an insertion portion is provided between the first base and the second base. The inspection-side substrate inserted into the insertion portion is clamped by the elasticity of the elastic member. A relay substrate is disposed on the second base. A spring connector is disposed on the relay substrate. The spring connector is elastically contacted with a terminal provided at an end portion of the inspection-side substrate in a state where the inspection-side substrate is sandwiched between the insertion portions. The first base is provided with a pair of arms that are long in the swinging direction on both sides of the second base. A cam support shaft is provided on the arm opposite to the insertion portion with respect to the support shaft so as to be separated from the second base and parallel to the support shaft. A cam lever is swingably disposed on the cam spindle. The cam lever can take a first swinging posture and a second swinging posture. In the first swinging posture, the cam lever holds the inspection substrate by the elasticity of the elastic member. In the second swinging posture, the cam lever abuts against the second base on a plane parallel to the cam spindle, and opens the insertion portion against the elastic force of the elastic member. This second swinging posture is a posture in which the cam lever is stable.

  Anyway, in patent documents 3 and 4, the open state of the insertion part (clamping part) is held by lever operation.

US Patent Publication No. 2006/0180475 (FIGS. 26-28) US Patent Publication No. 2006/0279317 JP 2000-260512 A JP 2004-1111269 A

  However, the clip type inspection jig provided with the clip open state holding mechanism disclosed in Patent Documents 3 and 4 has the following problems.

  In the board connector disclosed in Patent Document 3, an engagement lever is provided near the center thereof. Therefore, it is necessary to make a space (hole) in the internal lead-out substrate. As a result, it is necessary to devise the derivation pattern (wiring) of the derivation substrate, which is disadvantageous in terms of wiring space. Further, the board connector disclosed in Patent Document 3 has a problem that the structure is complicated and the assemblability is poor. Further, the board connector disclosed in Patent Document 3 needs to be disassembled when the engaging lever is not required during use. As a result, it is very difficult to remove the engagement lever from the board connector body.

  In the clip-type relay connector disclosed in Patent Document 4, a cam lever is externally attached to the connector body. However, in this clip-type relay connector, the sliding contact surface of the cam lever is rubbed against the upper surface of the second base against the elastic force (repulsive force) of the elastic member, and the second base is pushed down. Here, “sliding contact” means contacting in a sliding state. For this reason, scraping occurs between the sliding contact surface of the cam lever and the upper surface (connector body) of the second base. As a result, the connector body (clip type inspection jig) is damaged.

  Further, in the structures disclosed in Patent Documents 3 and 4, when the open state of the insertion portion (clamping portion) is held, it is locked beyond the bottom dead center. Therefore, since the “return” of the insertion portion (clamping portion) occurs, the insertion portion (clamping portion) is held in a state of being slightly closed from the maximum opening size.

  Furthermore, in the structures disclosed in Patent Documents 3 and 4, the clip open state holding mechanism is provided in an inseparable relationship with the clip type inspection jig body. Therefore, it is impossible to attach or remove the clip open state holding mechanism from the clip type inspection jig main body alone. In addition, since the clip open state holding mechanism disclosed in Patent Documents 3 and 4 is not versatile, when the type of the clip-type inspection jig body changes, a number of clip-type inspection jigs according to the type, Parts must be prepared. As a result, there is a problem that the efficiency becomes very poor.

  Then, the subject of this invention is providing the clip type inspection jig which can attach or detach a clip open state holding mechanism easily with respect to a clip type inspection jig main body.

  Another object of the present invention is to provide a clip-type inspection jig that can hold the clip-type inspection jig main body in an open state only by lever operation and that does not have "return".

  Still another object of the present invention is to provide a clip open state holding mechanism that has a very simple structure and is very easy to assemble.

  Still another object of the present invention is to provide a clip open state holding mechanism that can be commonly used for clip type inspection jig bodies having different heights.

  Another object of the present invention is to provide a clip-type inspection jig that can reduce sliding as much as possible and extremely reduce the damage to the clip-type inspection jig body.

  Still another object of the present invention is to provide a clip open state holding mechanism that is less likely to be assembled and that can be easily rearranged for right-handed / left-handed use.

  Another object of the present invention is to provide a clip open state holding mechanism that is less likely to be assembled and can be used regardless of whether it is right-handed or left-handed.

  Still another object of the present invention is to provide a clip open state holding mechanism which can be attached to and detached from the clip type inspection jig body and has versatility applicable to a certain range of the clip type inspection jig body. There is to do.

  According to the first aspect of the present invention, any one of the substrate, the clip pivotally attached to the substrate so that the tip is swingable while being urged toward the substrate, and the clip and the tip surface of the substrate In a clip-type inspection jig having a clip-type inspection jig body provided with a plurality of contact terminals provided on one side, the rear end of the clip is pressed toward the substrate side, and the space between the substrate and the front end of the clip is held open. A clip-type inspection jig having a clip open state holding mechanism, which is detachably attached to the substrate is obtained.

  According to the second aspect of the present invention, the rear end of the clip pivotally attached to the substrate is pressed toward the substrate so that the front end is oscillated while being biased toward the substrate, and the space between the substrate and the front end of the clip is increased. A clip open state holding mechanism for holding the clip in an open state, which is detachably provided on the substrate.

  Since the clip open state holding mechanism is detachably attached to the substrate, the clip open state holding mechanism can be easily attached to and detached from the clip type inspection jig body.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  A first clip-type inspection jig body 400 to which the clip-type inspection jig according to the present invention is applied will be described with reference to FIGS. The illustrated clip type inspection jig main body 400 has substantially the same configuration as that disclosed in Patent Document 2 described above.

  FIG. 1 is a perspective view showing a clip type inspection jig main body 400 mounted on a printed circuit board 300 on which an input / output interface connector 320 is mounted. FIG. 2 is an exploded perspective view of the clip type inspection jig main body 400. FIG. 3 is a cross-sectional view of the clip type inspection jig body 400.

  In the illustrated example, the coordinate system includes a first or X direction extending in the left-right direction, that is, a lateral direction, a second or Y direction extending in the front-rear direction, and a third or Z direction extending in the vertical direction. Have. The first to third directions X, Y, and Z are orthogonal to each other. The first or X direction is also referred to as the horizontal direction or the width direction, and the second or Y direction is also referred to as the front-rear direction. The third or Z direction is also called the up-down direction.

  The clip type inspection jig body 400 is also called a connection jig. The clip type inspection jig main body 400 is for electrically connecting the first and second connection target plates (connection target objects) 200 and 300 via the electric connector 100. In the illustrated example, the first connection object 200 is formed of a flexible printed circuit (FPC), and the second connection object 300 is formed of a printed circuit board. The electrical connector 100 is also called a low contact pressure connector.

  With reference to FIG. 4, the flexible printed circuit 200 which is a 1st connection object is demonstrated. The flexible printed circuit 200 has a lower surface 200l on which a first conductive pattern 210 is formed. The first conductive pattern 210 includes a plurality of first lower pads (contact portions) 211 and a plurality of second lower pads (contact portions) 212. The first lower pads 211 are arranged in the first lower row in the vicinity of the front edge 200f of the flexible printed circuit 200 along the horizontal direction X. The second lower pads 212 are arranged in a second lower row separated from the front edge 200f along the lateral direction X. The first lower pad 211 and the second lower pad 212 are separated from each other by a predetermined distance in the front-rear direction Y. In other words, the first lower pads 211 are arranged at equal intervals in the horizontal direction X, and the second lower pads 212 are arranged at equal intervals in the horizontal direction X. The equal interval is twice the line pitch Pl. That is, the first lower pad 211 and the second lower pad 212 are arranged so as to be shifted from each other by a predetermined distance in the front-rear direction Y. In other words, the first lower pads 211 and the second lower pads 212 are arranged in a staggered manner along the lateral direction X. The first lower pad 211 and the second lower pad 212 are also referred to as a lower contact pattern.

  With reference to FIG. 5, the printed circuit board 300 which is a 2nd connection target object is demonstrated. The printed circuit board 300 has an upper surface 300u on which the second conductive pattern 310 is formed. The second conductive pattern 310 includes a plurality of first upper pads (contact portions) 311 and a plurality of second upper pads (contact portions) 312. The first upper pads 311 are arranged in the first upper row along the horizontal direction X. The second lower pads 312 are arranged in the second upper row along the horizontal direction X. The first upper pad 311 and the second upper pad 312 are separated from each other by a predetermined distance in the front-rear direction Y. In other words, the first upper pads 311 are arranged at equal intervals in the horizontal direction X, and the second upper pads 312 are arranged at equal intervals in the horizontal direction X. The equal interval is twice the line pitch Pl. That is, the first upper pad 311 and the second upper pad 312 are arranged so as to be shifted from each other by a predetermined distance in the front-rear direction Y. In other words, the first upper pads 311 and the second upper pads 312 are arranged in a staggered manner along the lateral direction X. The first upper pad 311 and the second upper pad 312 are also referred to as contact terminals or upper contact patterns.

  As will be described later, the flexible printed circuit 200 and the printed circuit board 300 are electrically connected to each other via the electrical connector 100 by using the clip-type inspection jig body 400.

  An electrical connector (low contact pressure connector) 100 will be described with reference to FIGS. The illustrated electrical connector 100 has substantially the same configuration as the electrical connector disclosed in Patent Document 1 described above.

  FIG. 6 is a perspective view of the electrical connector 100. 7 is a cross-sectional view taken along line VII-VII in FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is an enlarged view of the electrical connector 100 surrounded by the ellipse 9 in FIG. FIG. 10 is an enlarged view of the electrical connector 100 surrounded by the ellipse 10 in FIG.

  The electrical connector 100 is employed between the first and second connection objects 200 and 300 to electrically connect the connection objects. Therefore, the electrical connector 100 is called an intermediate connector. The electrical connector 100 includes a plate-like base member 120 having first and second surfaces 120u and 120l facing each other in the thickness direction Z. The first surface 120u is called the upper surface, and the second surface 120l is called the lower surface. The plate-like base member 120 has front and rear edges 120f and 120r facing each other in the front-rear direction Y.

  The electrical connector 100 includes a flexible conductive film (sheet) 130 and first and second double-sided adhesive sheets 140U and 140L for fixing the flexible conductive film 130 to the plate-like base member 120. The first double-sided adhesive sheet 140U is called an upper double-sided adhesive sheet, and the second double-sided adhesive sheet 140L is called a lower double-sided adhesive sheet.

  The flexible conductive film (sheet) 130 includes a flexible insulating film (sheet) 131 and a film conductive pattern 132. The flexible insulating film 131 has an outer surface 131o and an inner surface 131i facing each other. The flexible insulating film 131 is bent in a substantially U shape in the vicinity of the front edge 120 f of the plate-like base member 120.

  The film conductive pattern 132 is formed not only on the outer surface 131 o of the flexible insulating film 131 but also on the inner surface 131 i of the flexible insulating film 131.

  More specifically, the film conductive pattern 132 includes a plurality of first and second conductive thin wires 132-1 and 132-2 arranged along the transverse direction X. In other words, the first and second thin conductive wires 132-1 and 132-2 extend parallel to each other in the front-rear direction Y, and are separated from each other in the lateral direction X at a predetermined line pitch Pl. The first conductive thin wires 132-1 and the second conductive thin wires 132-2 are alternately arranged along the horizontal direction X. Each of the first and second conductive thin wires 132-1 and 132-2 extends from the vicinity of the rear edge 120r of the plate-like base member 120 toward the front edge 120f of the plate-like base member 120. The member 120 returns from the vicinity of the front edge 120f to the vicinity of the rear edge 120r of the plate-like base member 120.

  The flexible insulating film 131 is fixed to the upper surface 120u of the base member 120 via the upper double-sided adhesive sheet 140U, and is fixed to the lower surface 120l of the base member 120 via the lower double-sided adhesive sheet 140L. The lower end 131L has an elastic support 131S that is spaced from the base member 120 and extends in a substantially U shape between the upper end 131U and the lower end 131L.

  The electrical connector 100 further includes first and second elastic members 150U and 150L. The first elastic member 150U is called an upper elastic member, and the second elastic member 150L is called a lower elastic member. The first and second elastic members 150U and 150L are fixed to the first and second surfaces 120u and 120l of the base member 120 and face the elastic support portion 131S. Accordingly, the upper elastic member 150U is inserted between the elastic support portion 131S and the upper surface 120u of the base member 120, and the lower elastic member 150L is inserted between the elastic support portion 131S and the lower surface 120l of the base member 120. ing.

  The upper elastic member 150U has a plurality of first upper protrusions 151U and a plurality of second upper protrusions 152U, which protrude upward from the upper elastic member 150U. The first upper protrusions 151U are arranged in a first upper row separated from the front edge 120f of the base member 120 along the lateral direction X. The second upper protrusions 152U are arranged in the second upper row in the vicinity of the front edge 120f of the base member 120 along the lateral direction X. The first upper row of first upper protrusions 151U and the second upper row of second upper protrusions 152U are separated from each other by a predetermined distance in the front-rear direction Y. In other words, the first upper protrusions 151U have the same shape and are arranged at equal intervals in the lateral direction X. The second upper protrusions 152U have the same shape and are arranged at equal intervals in the lateral direction X. The equal interval is twice the line pitch Pl. That is, the first upper protrusion 151U and the second upper protrusion 152U are arranged so as to be shifted from each other by the line pitch Pl in the lateral direction X. In other words, the first upper protrusions 151U and the second upper protrusions 152U are arranged in a staggered manner in the lateral direction X.

  Similarly, the lower elastic member 150L has a plurality of first lower protrusions 151L and a plurality of second lower protrusions 152L, which protrude downward from the lower elastic member 150L. The first lower protrusions 151 </ b> L are arranged in a first lower row separated from the front edge 120 f of the base member 120 along the lateral direction X. The second lower protrusions 152L are arranged in the second lower row in the vicinity of the front edge 120f of the base member 120 along the lateral direction X. The first lower row of the first lower protrusions 151L and the second lower row of the second upper protrusions 152L are separated from each other by a predetermined distance in the front-rear direction Y. In other words, the first lower protrusions 151L have the same shape and are arranged at equal intervals in the lateral direction X. The second lower protrusions 152L have the same shape and are arranged at equal intervals in the lateral direction X. The equal interval is twice the line pitch Pl. That is, the first lower protrusion 151L and the second lower protrusion 152L are arranged so as to be shifted from each other by the line pitch Pl in the lateral direction X. In other words, the first lower protrusions 151L and the second lower protrusions 152L are arranged in a staggered manner in the lateral direction X.

  The first upper protrusion 151U and the first lower protrusion 151L are arranged to face each other with the base member 120 sandwiched therebetween. The second upper protrusion 152U and the second upper protrusion 152L are disposed to face each other with the base member 120 sandwiched therebetween. The first upper protrusion 151U and the first lower protrusion 151L are formed at positions facing the first conductive wire 132-1, and the second upper protrusion 152U and the second lower protrusion 152L are It is formed at a position facing the second conductive thin wire 132-2.

  Referring to FIG. 10, each of the first thin conductive wires 132-1 corresponds to a first upper electrode pad (contact portion) 132-1 u formed on the corresponding first upper protrusion 151 </ b> U and a corresponding first. The first lower electrode pad (contact part) 132-1l formed on the first lower protrusion 151L. The first upper electrode pad 132-1u and the first lower electrode pad 132-1l are formed on the outer surface 131o of the flexible insulating film 131.

  Each of the first thin conductive wires 132-1 has a first inner conductive wire portion 132-1i and a pair of first outer conductive wire portions 132-1o. The first inner conductive wire portion 132-1i is formed on the inner surface 131i of the flexible insulating film 131, and through the first upper electrode pad 132-1u and the first lower electrode pad 132-1l. It is electrically connected via 132-1t. That is, the combination of the first inner conductive wire portion 132-1i and the through hole 132-1t electrically connects the first upper electrode pad 132-1u and the first lower electrode pad 132-1l. Acts as the first connecting member.

  The pair of first outer conductive wire portions 132-1 o is formed on the outer surface 131 o of the flexible insulating film 131. One of the pair of first outer conductive wire portions 132-1o is electrically connected to the first upper electrode pad 132-1u, and the other of the pair of first outer conductive wire portions 132-1o is the first Is electrically connected to the lower electrode pad 132-1l.

  Referring to FIG. 9, each of the second thin conductive wires 132-2 is associated with a second upper electrode pad (contact portion) 132-2u formed on the corresponding second upper protrusion 152U, and a corresponding first. 2 and a second lower electrode pad (contact part) 132-2l formed on the lower protrusion 152L. The second upper electrode pad 132-2u and the second lower electrode pad 132-1 are formed on the outer surface 131o of the flexible insulating film 131.

  Each of the second conductive thin wires 132-2 has a second outer conductive wire portion 132-2o and a pair of second inner conductive wire portions 132-2i. The second outer conductive wire portion 132-2o is formed on the outer surface 131o of the flexible insulating film 131, and electrically connects the second upper electrode pad 132-2u and the second lower electrode pad 132-2l. To connect to. That is, the second outer conductive wire portion 132-2o functions as a second connection member that electrically connects the second upper electrode pad 132-2u and the second lower electrode pad 132-2l.

  The pair of second inner conductive wire portions 132-2i is formed on the inner surface 131i of the flexible insulating film 131. One of the pair of second inner conductive wire portions 132-2i is electrically connected to the second upper electrode pad 132-2u via the through hole 132-2t, and the pair of second inner conductive wire portions 132. -2i is electrically connected to the second lower electrode pad 132-2l via the through hole 132-2t.

  In any case, the film conductive pattern 132 is formed not only on the outer surface 131 o of the flexible insulating film 131 but also on the inner surface 131 i of the flexible insulating film 131.

  Returning to FIGS. 1 to 3, the clip-type inspection jig body 400 will be described. The clip type inspection jig body 400 has a bottom cover 410 that functions as a support member (fixing member). The bottom cover 410 is mounted with the printed circuit board 300 described above. In other words, the printed circuit board 300 is mounted on the bottom cover 410. That is, the bottom cover 410 is provided on the bottom surface 300 l of the printed circuit board 300.

  The clip type inspection jig main body 400 is movable in the vertical direction (vertical direction) Z along the inner frame 420 mounted on the printed circuit board 300, the bottom cover 410, the printed circuit board 300, and the inner frame 420. A pusher 430, a base member 440 attached to the printed circuit board 300 and the inner frame 420, and a top cover 450 attached to the base member 440 so as to be rotatable around the shaft 460 are further included.

  The inner frame 420 has a pair of pusher guides 421 spaced apart from each other with a predetermined interval. This predetermined interval is, for example, 15.6 mm in consideration of the width of the flexible printed circuit (FPC) 200.

  The pusher 430 performs vertical movement guided by a pusher guide 421 inserted into the guide hole 432 and is urged upward by a pair of lifting coil springs (not shown). The pusher 430 has a pair of upper and lower guides 433 that face each other. In order to receive the flexible printed circuit (FPC) 200, the upper and lower guides 433 define an insertion port 431 formed at a position corresponding to the interval of the inner frame 420. The insertion port 431 has a narrowest portion having a height equal to 0.5 mm, for example, taking into account the thickness of the flexible printed circuit (FPC) 200.

  As will be described later, the inner frame 420 has a function of guiding insertion of the flexible printed circuit (FPC) 200 and is also called an FPC guide member.

  The base member 440 and the top cover 450 have shaft holes 441 and 451 for inserting the shaft 460, respectively. The shaft 460 is inserted into the shaft holes 441 and 451, whereby the top cover 450 is attached to the base member 440. The base member 440 to which the top cover 450 is attached is fixed to the bottom cover 410 together with the printed circuit board 300 and the inner frame 420 using four bolts 501 and four nuts 502. The bolt 501 includes a through hole 411 formed in the base cover 410, a through hole 301 formed in the printed circuit board 300, a through hole 424 formed in the inner frame 420, and a through hole formed in the base member 440 (not shown). 2) and screwed into the nut 502. The top cover 450 is biased in the closing direction by a pair of closing coil springs 470.

  Anyway, the combination of the bottom cover (fixing member) 410, the inner frame 420, the pusher 430, the base member 440, the top cover 450, and the pair of closing coil springs 470 swings while the tip is biased by the printed circuit board 300. It acts as a clip that is pivotally attached to the printed circuit board 300 so as to be free. The front in the front-rear direction Y with respect to the shaft 460 is the tip of the clip, and the rear in the front-rear direction Y is the rear end of the clip. Here, the tip of the clip is referred to as a first end, and the rear end of the clip is referred to as a second end.

  Shaft 460 serves as a pivot axis. The second end of the top cover 450 serves as the operation unit 452. A combination of the pusher 430 and the printed circuit board 300 functions as the clamping unit.

  Next, a method for positioning the electrical connector (low contact pressure connector) 100 will be described.

  The inner frame 420 includes a large protrusion (not shown) and a small protrusion (not shown) formed on the bottom surface thereof. In the illustrated example, the large protrusion is provided on the left side of the inner frame 420, and the small protrusion is provided on the right side of the inner frame 420. By using these protrusions, the low contact pressure connector 100 is positioned as described later. Specifically, as shown in FIG. 6, the plate-like base member 120 of the low contact pressure connector 100 includes a large hole 121 and a small hole 122 formed on opposite sides thereof. In the illustrated example, the large hole 121 is provided on the left side of the low contact pressure connector 100, and the small hole 122 is provided on the left side of the low contact pressure connector 100. The large hole 121 and the small hole 122 are fitted into the large protrusion and the small protrusion of the inner frame 420, respectively. Furthermore, a large fitting hole 302 and a small fitting hole 303 are formed in the printed circuit board 300. In the illustrated example, the large fitting hole 302 is provided on the left side of the printed circuit board 300, and the small fitting hole 303 is provided on the right side of the printed circuit board 300. The large protrusion and the small protrusion formed on the inner frame 420 are fitted into a large fitting hole 302 and a small fitting hole 303 formed on the printed circuit board 300, respectively. Therefore, the low contact pressure connector 100 is securely fitted between the printed circuit board 300 and the inner frame 420.

  Next, the clip type inspection jig body 400 will be described with reference to FIG. 11 in addition to FIGS. Here, a case where the module to be inspected is a liquid crystal display (LCD) 230 will be described as an example.

  As shown in FIG. 11A, a flexible printed circuit 200 extends from a liquid crystal display (LCD) 230. As described with reference to FIG. 4, the first conductive pattern 210 is formed on the lower surface 200 l of the flexible printed circuit 200. The first conductive pattern 210 has lower pads (contact portions) 211 and 212. These lower pads 211 and 212 are also called lower contact patterns.

  FIG. 11A shows an initial state of the clip-type inspection jig main body 400. In this initial state, the operation portion 452 of the top cover 450 is pushed upward by the pair of closing coil springs 470. For this reason, the tip (first end) of the top cover 450 is urged counterclockwise around the shaft 460. As a result, the pusher 430 is biased toward the printed circuit board 300, so that it is in contact with the printed circuit board 300 via the low contact pressure connector 100.

  In this state, as shown in FIG. 11B, the operation portion 452 of the top cover 450 is pushed down with a finger in the direction indicated by the arrow A1. Accordingly, the top cover 450 rotates clockwise around the shaft 460 and compresses the pair of closing coil springs 470. At this time, the pusher 430 is lifted upward by the pair of lifting coil springs, and the protrusion 434 of the pusher 430 follows the contact portion 453 of the top cover 450.

  In this state, as shown in FIG. 11C, the flexible printed circuit (FPC) 200 is inserted into the insertion port 431 of the pusher 430 in the direction indicated by the arrow A2. At this time, the inner frame 420 and the pusher 430 cooperate with each other to guide insertion of the flexible printed circuit (FPC) 200 and position the flexible printed circuit (FPC) 200. Therefore, visual alignment is unnecessary, inspection work is easy, and alignment is accurate.

  Subsequently, as shown in FIG. 11D, the finger is moved away from the operation portion 452 of the top cover 450 in the direction indicated by the arrow A3. As a result, the pair of closing coil springs 470 extend, and the top cover 450 rotates about the shaft 460 counterclockwise. Then, the pusher 430 is pushed down by the top cover 450, and the pair of lifting coil springs are compressed.

  As shown in FIG. 12, the flexible printed circuit (FPC) 200 is pressed by the plane of the pusher 430, and the lower contact patterns 211 and 212 formed on the lower surface 200l of the flexible printed circuit (FPC) 200 have a low contact pressure. The upper contact patterns 311 and 312 formed on the upper surface 300 u of the printed circuit board 300 are brought into contact with each other through the film conductive pattern 132 of the connector 100. Accordingly, the flexible printed circuit (FPC) 200 is electrically connected to the printed circuit board 300.

  As described above, the input / output interface connector 320 is mounted on the upper surface 300 u of the printed circuit board 300. The input / output interface connector 320 is electrically connected to the second conductive pattern 310 (FIG. 5) formed on the upper surface 300 u of the printed circuit board 300. The input / output interface connector 320 is connected to the above-described tester (not shown) via a cable. Accordingly, the liquid crystal display (LCD) 230 is electrically connected to the inspection tester via the flexible printed circuit (FPC) 200, the clip-type inspection jig body 400, the input / output interface connector 320, and the cable. Thereby, the electrical characteristics (lighting characteristics) of the liquid crystal display (LCD) 230 can be tested by using the tester for inspection.

  FIG. 1 illustrates a first clip-type inspection jig body 400 to which the clip-type inspection jig according to the present invention is applied, but the clip-type inspection jig body to which the clip-type inspection jig according to the present invention is applied. Of course, is not limited to that shown in FIG.

  FIG. 13 is a perspective view showing a second clip type inspection jig body 400A to which the clip type inspection jig according to the present invention is applied. The illustrated clip type inspection jig main body 400A has substantially the same configuration as that disclosed in Patent Document 1 described above.

  The clip-type inspection jig body 400A shown in the figure basically has the same configuration as the clip-type inspection jig body 400 shown in FIG. 1 and operates. The difference is that the height of the printed circuit board 300 from the upper surface 300u is different. That is, the height of the clip type inspection jig body 400 </ b> A is lower than the height of the clip type inspection jig body 400.

  As described above, in the clip type inspection jig main bodies 400 and 400A shown in FIG. 1 and FIG. 13, in order to keep the clamping part (insertion part) open, the operator (operator) is the top. The operation part 452 of the cover 450 must be pushed downward. This is because when the operator (operator) releases his / her finger from the operation unit 452 of the top cover 450, the pair of closing coil springs 470 extend, and thus the top cover 450 closes the clamping unit (insertion unit). Because it biases in the direction.

  However, when the size of the module to be inspected (in this example, the liquid crystal display (LCD) 230) is large or the shape of the object to be inspected (in this example, the flexible printed circuit (FPC) 200) is complicated. The inspection object must be handled with both hands. In such a situation, when using the clip type inspection jig main bodies 400 and 400A, at least two operators (operators) are required, which is inconvenient. Therefore, once the operation unit 452 of the top cover 450 is operated and the operation is released, the clip-type inspection jig bodies 400 and 400A can be held by one operator if the holding unit can be kept open. Can be used.

  Therefore, a mechanism (clip open state holding mechanism) that holds the holding portion in an open state is required.

  The clip type inspection jig according to the present invention has a structure in which a clip type inspection jig main body 400 or 400A shown in FIGS. 1 and 13 is combined with a clip open state holding mechanism (described later). However, the clip open state holding mechanism according to the present invention is provided in an inseparable relationship with the clip type inspection jig body, like the clip open state holding mechanism disclosed in Patent Documents 3 and 4 described above. First, it is attached to the printed circuit board 300 separately from the clip type inspection jig main body 400 or 400A. In other words, the clip open state holding mechanism according to the present invention is detachably attached to the printed circuit board 300.

  FIG. 14 is a perspective view showing a clip type inspection jig according to the first embodiment of the present invention. The illustrated clip type inspection jig includes the clip type inspection jig main body 400 illustrated in FIG. 1 and the clip open state holding mechanism 600 according to the first embodiment of the present invention.

  The clip open state holding mechanism 600 is for pressing the operation part 452 of the top cover 450 toward the printed circuit board 300 and holding the holding part in the open state. In other words, the clip open state holding mechanism 600 is for pressing the rear end of the clip toward the printed circuit board 300 and holding the printed circuit board 300 and the front end of the clip in an open state. The clip open state holding mechanism 600 is detachably attached to the printed circuit board 300 by a pair of screws 620R and 620L described later.

  With reference to FIG. 15 in addition to FIG. 14, the configuration of the clip open state holding mechanism 600 will be described in detail.

  The clip open state holding mechanism 600 includes a base frame 610 that is detachably attached to the printed circuit board 300. The illustrated base frame 610 is a pair of support posts 610R and 610L that are spaced apart in the left-right direction (lateral direction) X with the operation portion 452 of the top cover 450 of the clip-type inspection jig body 400 interposed therebetween. Consists of One column 610R is disposed on the right side of the top cover 450, and is therefore referred to as a right column or a right base frame. Since the other support column 610L is disposed on the left side of the top cover 450, it is called a left support column or a left base frame. As shown in FIG. 15, the right column 610R and the left column 610L have the same shape (structure).

  The pair of columns 610R and 610L are attached to the printed circuit board 300 by a pair of screws 620R and 620L, respectively. More specifically, the printed circuit board 300 has a pair of through holes (not shown) for passing through the screw portions of the pair of screws 620R and 620L. In addition, a pair of screw holes (not shown) for screwing the screw portions of the pair of screws 620R and 620L are formed on the bottom surfaces of the pair of columns 610R and 610L, respectively. The base frame 610 is attached to the printed circuit board 300 by screwing the screw portions of the pair of screws 620R and 620L into the pair of screw holes of the pair of columns 610R and 610L through the pair of through holes of the printed circuit board 300. It is done. On the other hand, the base frame 610 is removed from the printed circuit board 300 by releasing the screwing by the pair of screws 620R and 620L.

  In any case, the pair of screws 620R and 620L serve as an attachment / detachment member that allows the clip open state holding mechanism 600 to be attached to and detached from the printed circuit board 300.

  The clip open state holding mechanism 600 has a lever 630 that is pivotally supported at a position above the base frame 610 so as to be rotatable. More specifically, the lever 630 has a support shaft portion 632 extending between the right column 610R and the left column 610L. The support shaft portion 632 has a first shaft through hole 632a through which the lever shaft 633 is inserted. The right column 610R has a right shaft through hole 610Ra into which the right end 633a of the lever shaft 633 is inserted, and the left column 610L has a left shaft through hole 610La into which the right end 633b of the lever shaft 633 is inserted. The lever 630 includes an operation portion 634 that extends upward from the right end portion of the upper end 632 u of the support shaft portion 632. An upper end 632u of the support shaft portion 632 is called a first end. The lever 630 includes a pair of link support portions 636R and 636L that extend downward from both left and right ends of the lower end 6321 of the support shaft portion 632 and rotatably support a link 640 described later. The lower end 6321 of the support shaft portion 632 is called a second end. One link support portion 636R is called a right link support portion because it is provided on the right side of the support shaft portion 632, and the other link support portion 636L is provided on the left side of the support shaft portion 632 so that it is a left link. It is called a support part.

  The link 640 has a substantially rectangular parallelepiped shape. The upper end portion 640u of the link 640 is inserted between the pair of link support portions 636R and 636L. The upper end portion 640u of the link 640 has a first shaft through hole 640a through which the first link shaft 642 is inserted. The upper end portion 640u of the link 640 is called a first end. On the other hand, the right link support portion 636R has a right shaft through hole 636Ra into which the right end portion 642a of the first link shaft 642 is inserted, and the left link support portion 636L is a left end of the first link shaft 642. It has a left shaft through hole 636La into which the portion 642b is inserted. The lower end portion 640l of the link 640 is inserted between pushers 650 described later. The lower end portion 640l of the link 640 has a second shaft through hole 640b through which the second link shaft 644 is inserted.

  The pusher 650 is assembled at a position below the base frame 610 so as to be movable up and down. Specifically, the pusher 650 includes an upper pusher portion 652 and a lower pusher portion 654 that are divided in the vertical direction Z, and a pair of compression springs 656R disposed between the upper pusher portion 652 and the lower pusher portion 654. , 656L, and a pair of screws 658R and 658L that couple the upper pusher portion 652 and the lower pusher portion 654 so as to be close to and away from each other in the vertical direction Z within a certain range. One compression spring 656R is called a right compression spring because it is arranged on the right side of the pusher 650, and the other compression spring 656L is called a left compression spring because it is arranged on the left side of the pusher 650. One screw 658R is called a right screw because it is arranged on the right side of the pusher 650, and the other screw screw 658L is called a left screw because it is arranged on the left side of the pusher 650. The upper pusher portion 652 and the lower pusher portion 654 are biased in a direction away from each other by the pair of compression springs 656R and 656L.

  The upper pusher portion 652 has a pair of pusher guide portions 652R and 652L facing each other with the lower end portion 640l of the link 640 interposed therebetween. Since one pusher guide portion 652R is arranged on the right side of the upper pusher portion 652, it is called a right pusher guide portion, and the other pusher guide portion 652L is arranged on the left side of the upper pusher portion 652. Called the left pusher guide. The right pusher guide portion 652R and the left pusher guide portion 652L are bridged between them by a bridging portion 652B. The right pusher guide portion 652R has a right shaft through hole 652Ra into which the right end portion 644a of the second link shaft 644 is inserted. The left pusher guide portion 652L has a left shaft through hole 652La into which the left end portion 644b of the second link shaft 644 is inserted. Accordingly, the upper pusher portion 652 is rotatably coupled to the second end of the link 640.

  The right pusher guide portion 652R has a right guide piece 652Rb protruding to the right side, and the left pusher guide portion 652L has a left guide piece 652Lb protruding to the left side. On the other hand, the right base frame 610R has a right guide groove 610Rb (not shown) that engages with the right guide piece 652Rb and guides the vertical movement of the pusher 650 on the surface facing the left pusher guide portion 652L. The left base frame 610L has a left guide groove 610Lb that engages with the left guide piece 652Lb and guides the vertical movement of the pusher 650 on the surface facing the right pusher guide portion 652R. Anyway, the right guide groove 610Rb and the left guide groove 610Lb are for guiding the vertical movement of the pusher 650.

  The right pusher guide portion 652R has a right recess 652Rc on its bottom surface, and the left pusher guide portion 652L has a left recess 652Lc on its bottom surface.

  The lower pusher portion 654 includes a pusher body 654B that extends in the left-right direction X and contacts the operation portion 452 of the clip-type inspection jig body 400 described above. The pusher body 654B faces the bridging portion 652B of the upper pusher portion 652. The lower pusher portion 654 includes a pair of projecting portions 654R and 654L that project upward from the left and right ends of the upper surface 654Bu of the pusher body 654B. Since one protrusion 654R is arranged on the right side of the pusher body 654B, it is called a right protrusion, and the other protrusion 654L is called a left protrusion because it is arranged on the left side of the pusher body 654B. . The right protruding portion 654R faces the right recess 652Rc of the right pusher guide portion 652R of the upper pusher portion 652 via the right compression spring 656R. The left protrusion 652L faces the left recess 652Lc of the left pusher guide portion 652L of the upper pusher portion 652 via the left compression spring 656L.

  The right protrusion 654R has a right through-hole 654Ra that passes through the screw portion of the right screw 658R. On the other hand, the right pusher guide portion 652R of the upper pusher portion 652 has a right screw hole (not shown) into which the tip of the screw portion of the right screw 658R is screwed. Therefore, the tip of the right screw 658R is threaded into the right screw hole of the right pusher guide 652R from the lower end (bottom) of the right protrusion 654R through the right through hole 654Ra and the right compression spring 656R. .

  Similarly, the left protrusion 654L has a left through hole 654La that passes through the threaded portion of the left screw 658L. On the other hand, the left pusher guide portion 652L of the upper pusher portion 652 has a left screw hole (not shown) into which the tip of the screw portion of the left screw 658L is screwed. Accordingly, the tip of the screw portion of the left screw 658L is screwed into the right screw hole of the left pusher guide portion 652L from the lower end side (bottom portion) of the left protrusion 654L via the left through hole 654La and the left compression spring 656K. .

  As a result, the head of the right screw 658R comes into contact with the bottom of the right protrusion 654R by the right compression spring 656R, and the head of the left screw 658L comes into contact with the bottom of the left protrusion 654L by the left compression spring 652L. In addition, the lower pusher portion 654 is always urged away from the upper pusher portion 652.

  In the present embodiment, a right screw 658R and a left screw 658L are used as a coupling member that couples the upper pusher portion 652 and the lower pusher portion 654 so that the upper pusher portion 652 and the lower pusher portion 654 can approach and separate in the vertical direction Z within a certain range. However, the right side pin and the left side pin may be used instead. In this case, the right pusher guide portion 652R of the upper pusher portion 652 has a right press fit hole into which the tip of the right pin is press-fitted, and the left pusher guide portion 652L of the upper pusher portion 652 is press-fitted with the tip of the left pin. It is only necessary to have a left press-fitting hole.

  As is clear from FIG. 15, the right base frame 610R, the left base frame 610L, the link 640, and the pusher 650 have a symmetrical shape. As a result, mistakes in assembly can be reduced. For example, as shown in FIG. 15, regarding the base frame 610, each of the right base frame 610R and the left base frame 610L is bilaterally symmetric, so the right base frame 610R and the left base frame 610L are mistaken on the left and right. The clip open state holding mechanism 600 has the same shape.

  Also, as shown in FIG. 16, by assembling the lever 630 upside down, the right-handed clip open state holding mechanism 600 (see FIG. 16A) and the left-handed clip open state holding mechanism 600A are assembled. (See FIG. 16B) can be easily rearranged.

  As shown in FIG. 15, the right base frame 610R and the left base frame 610L have a right stopper 612R and a left stopper 612L that prevent the lever 630 from rotating. The action (action) of these stoppers 612R and 612L will be described in detail later with reference to the drawings.

  Anyway, the clip open state holding mechanism 600 or 600A is provided with a base frame 610 that is detachably attached to the printed circuit board 300, a lever 630 that is rotatably attached to the base frame 610, and a link to the lever 630. Pusher 650 operatively coupled via 640. According to the clip open state holding mechanism 600 or 600A having such a configuration, the pusher 650 is moved up and down via the link 640 by rotating the lever 630, and the rear end (operation unit) 452 of the clip is pressed and pressed. It can be canceled.

  FIG. 17 shows a state where the clip-type inspection jig main body 400 is kept closed by the clip open state holding mechanism 600, and FIG. 18 shows the clip type inspection jig main body 400 by the clip open state holding mechanism 600. The state which is maintaining in the state which opened the clamping part of this is shown. 17A shows a perspective view of the clip-type inspection jig in a state in which the clamping part is closed, and FIG. 17B shows a cross-sectional view of the clip-type inspection jig in a state in which the clamping part is closed. 18A is a perspective view of the clip-type inspection jig in a state where the sandwiching portion is open, and FIG. 18B is a cross-sectional view of the clip-type inspection jig in which the sandwiching portion is open.

  As shown in FIGS. 17A and 17B, when the holding portion is closed, the operator holds the operation portion 634 of the lever 630 and rotates around the lever shaft 633 counterclockwise. Keep moving. In this case, the support shaft portion 632 of the lever 630 is locked by the stoppers 612R and 612L of the base frame 610 at the position shown in FIG. In such a state, the operation unit 452 of the top cover 450 of the clip type inspection jig body 400 is locked with the pusher 650 of the clip open state holding mechanism 600 at the position shown in FIG.

  That is, the top cover 450 rotates counterclockwise around the shaft 460 by the extension force of the pair of closing coil springs 470, so that the operation portion 452 of the top cover 450 is engaged by the pusher 650 of the clip open state holding mechanism 600. Stop. At this time, the pusher 430 of the clip type inspection jig body 400 is pushed down by the top cover 450, and the pair of lifting coil springs are compressed. Thus, the pusher 430 presses the low contact pressure connector 100 against the printed circuit board 300 side.

  In this state, it is assumed that the operator holds the operation portion 634 of the lever 630 and rotates around the lever shaft 633 clockwise.

  In this case, as shown in FIG. 18B, the lever 630 pushes the pusher 650 downward via the link 640. Since the pusher 650 is engaged with the operating portion 452 of the top cover 450, the top cover 450 rotates clockwise around the shaft 460, and the pair of closing coil springs 470 are compressed. Then, the pusher 430 of the clip type inspection jig body 400 is lifted upward by the pair of lifting coil springs. Thereby, the clamping part of the clip type inspection jig main body 400 is in an open state.

  Here, it is assumed that the operator releases his / her hand from the operation unit 634 of the lever 630. Even in such a state, the support shaft 632 of the lever 630 is locked at the position shown in FIG. 18B by the stoppers 612R and 612L of the base frame 610. As a result, counterclockwise rotation around the shaft 460 of the top cover 450 due to the urging force (extension force) of the pair of closing coil springs 470 is prohibited (suppressed). As a result, the clamping portion of the clip type inspection jig main body 400 is maintained (held) in the open state even if the operator cancels the operation.

  Next, the relationship between the stoppers 612R and 612L of the clip open state holding mechanism 600 and the bottom dead center of the clip type inspection jig main body 400 will be described in detail with reference to FIGS. In the present specification, the first link shaft 642 for connecting the link 640 and the lever 630 is also referred to as a first connecting portion, and the lever shaft for connecting the lever 630 and the base frame 610. 633 is also referred to as a second connecting portion, and the second link shaft 644 for connecting the link 640 and the pusher 650 is also referred to as a third connecting portion.

  As shown in FIG. 19, in the initial state, as described above, the clamping portion of the clip type inspection jig body 400 is closed by the extension force of the pair of closing coil springs 470 of the clip type inspection jig body 400. Held in a state.

  In this state, as shown in FIG. 20, the operator (operator) holds the operating portion 634 of the lever 630 and moves the lever shaft (second connecting portion) in the direction indicated by the arrow B1 in FIG. ) It is assumed that the rotation around 633 is clockwise. In this case, the pusher 650 of the clip open state holding mechanism 600 pushes the operation portion 452 of the clip type inspection jig main body 400 downward in the direction indicated by the arrow B2 in FIG. As a result, the pair of closing coil springs 470 of the clip type inspection jig main body 400 are compressed, and the top cover 450 of the clip type inspection jig main body 400 rotates around the shaft 460 in a clockwise direction. The pusher 430 of the tool body 400 is lifted upward by a pair of lifting coil springs. Thereby, as shown in FIG. 20, the clamping part of the clip-type inspection jig body 400 starts to open.

  Here, the compression force of the pair of compression springs 656R and 656L disposed between the upper pusher portion 652 and the lower pusher portion 654 is the extension force of the pair of closing coil springs 470 of the clip type inspection jig body 400. It needs to be larger than (biasing force).

  From this state, as shown in FIG. 21, the operator (operator) holds the operating portion 634 of the lever 630 and moves it in the direction indicated by the arrow B3 in FIG. ) It is assumed that the rotation around 633 is further clockwise. Then, the operation part 452 of the clip type inspection jig main body 400 reaches the bottom dead center BDC. Further, when the operator (operator) operates the lever 630, the pair of compression springs 656R and 656L are bent as indicated by an arrow B4 in FIG.

  Further, as shown in FIG. 22, when the operator operates the lever 630 until it hits the stoppers 612R and 612L, the pusher 650 of the clip open state holding mechanism 600 exceeds the bottom dead center BDC of the clip type inspection jig body 400. The open state of the clamping part of the clip type inspection jig body 400 is maintained. At this time, the first link shaft (first connecting portion) 642 has a line connecting the lever shaft (second connecting portion) 633 and the second link shaft (third connecting portion) 644. 22, the lever 630 acts so that the lever 630 is pressed against the stoppers 612R and 612L by the extension force (biasing force) of the closing coil spring 470. Therefore, the operator releases the lever 630. Even so, the clamping portion of the clip-type inspection jig main body 400 maintains its open state. Even if the pusher 650 of the clip open state holding mechanism 600 exceeds the bottom dead center BDC of the clip type inspection jig main body 400, the operation of the clip type inspection jig main body 400 is performed by the compression force of the pair of compression springs 656R and 656L. The part 452 has no “return”. Therefore, the clamping part of the clip type inspection jig main body 400 can be held in the open state with the maximum opening dimension.

  In this state, a flexible printed circuit (FPC) 200 that is an inspection object can be inserted from the clamping portion of the clip-type inspection jig main body 400 as indicated by an arrow B5 in FIG.

  After inserting and aligning the flexible printed circuit (FPC) 200 from the clamping portion of the clip-type inspection jig main body 400, the operator holds the operation portion 634 of the lever 630 and counterclockwise around the lever shaft 633. Rotate around. When the clip-type inspection jig main body 400 exceeds the bottom dead center BDC, the pair of closing coil springs 470 extend, so that the operator may release his / her hand from the operation portion 634 of the lever 630. As a result, the top cover 450 rotates around the shaft 460 counterclockwise. Then, the pusher 430 of the clip type inspection jig body 400 is pushed down by the top cover 450, and the pair of lifting coil springs are compressed. As a result, as shown in FIG. 23, the flexible printed circuit (FPC) 200 and the printed circuit board 300 are electrically connected to each other via the low contact pressure connector 100.

  In the clip open state holding mechanism 600 according to the present embodiment, the pusher 650 moves vertically in the vertical direction Z along a pair of guide grooves 610Rb and 610Lb formed in the base frame 610. There is little sliding with 400. Here, “sliding” means sliding in contact. As a result, damage to the clip type inspection jig body 400 can be suppressed.

  Anyway, in the clip open state holding mechanism 600 according to the present embodiment, the pair of stoppers 612R and 612L includes the first connecting portion (first link shaft) 642 and the bottom dead center of the clip type inspection jig body 400. When moving from one side across the line connecting the second connecting portion (lever shaft) 633 and the third connecting portion (second link shaft) 644 beyond the BDC to the other side, the lever 630 Prevent further rotation of the.

  With reference to FIG. 24, the correspondence to the clip type inspection jig bodies 400 and 400A having different heights will be described. 24A is a schematic cross-sectional view showing an initial state of the clip type inspection jig in which the clip open state holding mechanism 600 according to the present embodiment is applied to the clip type inspection jig main body 400 shown in FIG. (B) is a schematic sectional view showing an initial state of the clip type inspection jig in which the clip open state holding mechanism 600 according to this embodiment is applied to the clip type inspection jig main body 400A shown in FIG.

As described above, the height H ₂ of the clip type inspection jig body 400A is lower than the height H ₁ of the clip type inspection jig body 400 (H ₂ <H ₁ ).

  As a result, the position of the initial pusher 650 differs between the clip type inspection jig shown in FIG. 24A and the clip type inspection jig shown in FIG. As a result, the initial angle of the lever 630 is also different.

  In such a situation, as described above, it is assumed that the operator operates the lever 630 of the clip open state holding mechanism 600 to hold the clip-type inspection jigs 400 and 400A in the open state. 24C is a schematic cross-sectional view showing a state in which the holding portion of the clip-type inspection jig main body 400 shown in FIG. 24A is held open by the clip open state holding mechanism 600. FIG. FIG. 24D is a schematic cross-sectional view showing a state in which the holding portion of the clip-type inspection jig body 400A shown in FIG.

  As is clear from FIGS. 24C and 24D, the pair of compression springs 656R and 656L absorb the difference in height in the state in which the clip-type inspection jig bodies 400 and 400A are opened. It can be seen that the position of the lever 630 does not change. That is, it can be seen that the clip-type inspection jig main bodies 400 and 400A having different heights can be accommodated within the length range of the pair of compression springs 656R and 656L provided on the pusher 650. However, the compression force of the pair of compression springs 656R and 656L needs to be larger than the force of the pair of closing coil springs 470 of the clip type inspection jig main bodies 400 and 400A.

  In addition, the case where the height of a clip type inspection jig main body differs beyond the range of the length of a pair of compression springs 656R and 656L is also assumed. In such a case, it is possible to cope with the problem by exchanging a pair of compression springs having a suitable length with a pair of compression springs 656R and 656L. In other words, it can be dealt with by simply exchanging the pair of compression springs 656R and 656L.

  The shape of the lever of the clip open state holding mechanism is not limited to that of the above-described embodiment, and various shapes can be adopted.

  A first modified example 600B of the clip open state holding mechanism will be described with reference to FIG. The illustrated click open state holding mechanism 600B has the same configuration as the clip open state holding mechanism 600 shown in FIG. 15 and operates except that the shape of the lever is different. Therefore, the reference numeral 630A is attached to the lever. Components having the same functions as those shown in FIG. 16 are denoted by the same reference numerals, and description thereof is omitted for the sake of simplicity.

  The lever 630A has the same configuration as the lever 630 illustrated in FIG. 15 except that the shape of the operation unit is different. Therefore, a reference numeral 634A may be attached to the operation unit.

  That is, the operation portion 634 of the lever 630 illustrated in FIG. 15 extends upward from one end portion of the support shaft portion 632 and has a rod shape, whereas the operation portion 634A of the lever 630A. Has a U-shaped configuration extending upward from both end portions of the support shaft portion 632. That is, the lever 630A includes a U-shaped operation unit 634A. Therefore, the lever 630A has a symmetrical shape. In other words, in the click open state holding mechanism 600B, all of the components (the right base frame 610R, the left base frame 610L, the link 640, the pusher 650, and the lever 630A) are symmetrical. The click open state holding mechanism 600B having such a configuration can cope with left and right handedness.

  A second modification 600C of the clip open state holding mechanism will be described with reference to FIG. The click-open state holding mechanism 600C shown in the figure has the same configuration as the clip-open state holding mechanism 600 shown in FIG. 15 and operates except that the shape of the lever is different. Therefore, the reference numeral 630B is attached to the lever. Components having the same functions as those shown in FIG. 15 are denoted by the same reference numerals, and description thereof is omitted for the sake of simplicity.

  The lever 630B has the same configuration as the lever 630 illustrated in FIG. 15 except that the mounting angle of the operation unit is different. Therefore, the reference numeral 634B is attached to the operation unit.

  That is, the rod-like operation portion 634 of the lever 630 illustrated in FIG. 15 extends straight upward from one end of the upper end 632u of the support shaft portion 632, whereas the rod-like operation portion of the lever 630B. The part 634 </ b> B extends upward from one end of the upper end 632 u of the support shaft part 632 at a predetermined angle in advance. This modification is because workability is taken into consideration.

  With reference to FIG. 27, a third modified example 600D of the clip open state holding mechanism will be described. The illustrated click open state holding mechanism 600D has the same configuration as the clip open state holding mechanism 600A illustrated in FIG. 25 and operates except that the shape of the lever is different. Therefore, the reference numeral 630C is attached to the lever. Components having the same functions as those shown in FIG. 25 are denoted by the same reference numerals, and description thereof is omitted for the sake of simplicity.

  The lever 630C has the same configuration as the lever 630A illustrated in FIG. 25 except that the mounting angle of the operation unit is different. Therefore, the reference numeral 634C is attached to the operation unit.

  That is, the U-shaped operation portion 634A of the lever 630A illustrated in FIG. 25 extends straight upward from both ends of the upper end 632u of the support shaft portion 632, whereas the U-shaped operation portion of the lever 630C. The part 634 </ b> C extends at a predetermined angle upward from both ends of the upper end 632 u of the support shaft part 632. This is because this modification also considers workability.

  With reference to FIG. 28 and FIG. 29, a clip type inspection jig according to a second embodiment of the present invention will be described. FIG. 28 is a perspective view of a clip type inspection jig according to a second embodiment of the present invention, and FIG. 29 is a sectional view thereof. The illustrated clip type inspection jig includes the clip type inspection jig main body 400 illustrated in FIG. 1 and a clip open state holding mechanism 700 according to the second embodiment of the present invention.

  The clip open state holding mechanism 700 is for pressing the operation part 452 of the top cover 450 toward the printed circuit board 300 and holding the holding part of the clip type inspection jig main body 400 in the open state. In other words, the clip open state holding mechanism 700 is for pressing the rear end of the clip toward the printed circuit board 300 and holding the printed circuit board 300 and the tip of the clip in the open state. The clip open state holding mechanism 700 is detachably provided on the printed circuit board 300 by a pair of bolts and a pair of nuts 720R and 720L described later.

  30 is a perspective view of the clip open state holding mechanism 700, and FIG. 31 is an exploded perspective view of the clip open state holding mechanism 700. FIG.

  Hereinafter, the configuration of the clip open state holding mechanism 700 will be described in detail with reference to FIGS. 30 and 31 in addition to FIGS. 28 and 29. The clip open state holding mechanism 700 has a base frame 710 that is detachably attached to the printed circuit board 300. The base frame 710 is substantially U-shaped so as to cover the outer periphery of the base member 440 of the clip type inspection jig body 400. Specifically, the base frame 710 includes a right base portion 710R extending along the right side surface of the base member 440, a left base portion 710L extending along the left side surface of the base member 440, and the rear surface of the base member 440. And a bridging portion 710B that bridges the right base portion 710R and the left base portion 710L.

  The right base portion 710R has a right nut accommodating portion 711R for accommodating the right nut 720R at a substantially central portion thereof. The right nut housing portion 711R is provided with a right through hole 711Ra for penetrating a right bolt (not shown). The printed circuit board 300 is also provided with a right through hole (not shown) at a position corresponding to the right through hole 711Ra. Accordingly, the right base bolt is threaded into the right nut 720R accommodated in the right nut accommodating portion 711R by passing the right bolt through the right through hole of the printed circuit board 300 and the right through hole 711Ra of the right base portion 710R. The portion 710R can be attached to the printed circuit board 300.

  Similarly, the left base portion 710L has a left nut housing portion 711L for housing the left nut 720L at a substantially central portion thereof. The left nut accommodating portion 711L is provided with a left through hole (not shown) for penetrating a right bolt (not shown). The printed circuit board 300 is also provided with a left through hole (not shown) at a position corresponding to the left through hole. Therefore, the left base bolt is screwed into the left nut 720L accommodated in the left nut accommodating portion 711L by passing the left bolt through the right through hole of the printed circuit board 300 and the right through hole of the right base portion 710R. 710L can be attached to the printed circuit board 300.

  In this manner, the base frame 710 can be attached to or detached from the printed circuit board 300 using the pair of nuts 720R and 720L and the pair of bolts.

  In any case, the combination of the pair of nuts 720R and 720L and the pair of bolts serves as an attachment / detachment member that allows the clip open state holding mechanism 700 to be attached to and detached from the printed circuit board 300.

  A lever 730 is rotatably mounted on the base frame 710. Here, “shaft mounting” means that the shaft is rotatably attached. The lever 730 is also substantially U-shaped. Specifically, the lever 730 includes a right-hand arm portion 730R and a left-hand arm portion 730L provided to face each other on both the left and right sides, and a bridging portion 730B that bridges the right-hand arm portion 730R and the left-hand arm portion 730L at their rear ends. And have. The bridging portion 730B is also called a lever operation portion.

  The tip (front end) 730Ra of the right arm portion 730R is bent at a right angle to the inside (left side). On the other hand, the right base portion 710R of the base frame 710 has a right guide groove (concave portion) 712R that guides the right arm portion 730R on the tip side. The right guide groove (recessed portion) 712R has a right insertion hole (not shown) into which the tip (front end) 730Ra of the right arm portion 730R is inserted. Here, “insertion” means insertion.

  Similarly, the front end (front end) 730La of the left arm portion 730L is bent at a right angle toward the inner side (right side). On the other hand, the left base portion 710L of the base frame 710 has a left guide groove (concave portion) 712L for guiding the left arm portion 730L on the tip end side. The left guide groove (recess) 712L is provided with a left insertion hole 712La into which the tip (front end) 730La of the left arm 730L is inserted.

  The tip (front end) 730Ra of the right arm portion 730R and the tip (front end) 730La of the left arm portion 730L are referred to as a first end of the lever 730. The rear ends of the right arm portion 730R and the left arm portion 730L are referred to as a second end of the lever 730. In any case, the front end (front end) 730Ra of the right arm portion 730R is rotatably fitted in the right insertion hole of the right base portion 710R, and the front end (front end) 730La of the left arm portion 730L is the left insertion hole 712La of the left base portion 710L. It is inserted in a freely rotatable manner. Accordingly, the first end of the lever 730 is pivotally attached to the base frame 710. In other words, the front end (front end) 730Ra of the right arm portion 730R and the front end (front end) 730La of the left arm portion 730L serve as a rotation shaft (rotation shaft) of the lever 730.

  Further, the bridging portion (operation portion) 730B of the lever 730 has a U-shaped protruding portion 732B protruding outward (backward) at the center thereof. A pusher 750, which will be described later, is attached to the protruding portion 732B. The protrusion 732 </ b> B is U-shaped to prevent the pusher 750 from rotating. In any event, pusher 750 is attached to the second end of lever 730.

  Note that the pusher 750 is provided above the operation portion 452 of the clip-type inspection jig body 400, as is apparent from FIGS.

  The configuration of the pusher 750 will be described in more detail with reference to FIG. 32 in addition to FIGS. 32A is a perspective view showing an assembly in which the pusher 740 is attached to the lever 730, FIG. 32B is an exploded perspective view of the assembly, and FIG. 32C is a right side view of the assembly. It is.

  As shown in FIG. 32 (B), the pusher 750 includes an upper pusher member 752 and a lower pusher member 754 that are divided in two in the vertical direction Z. That is, the pusher 750 is attached to the second end of the lever 730 by sandwiching the bridging portion (lever operation portion) 730B of the lever 730 between the upper pusher member 752 and the lower pusher member 754.

  The upper pusher member 752 has a semispherical upper groove 752a corresponding to the shape of the bridging portion (lever operation portion) 730B of the lever 730 on the bottom surface 752l. The upper pusher member 752 has a protrusion 752b that protrudes downward at the rear edge of the bottom surface 752l. Further, the upper pusher member 752 has a pair of recesses 752c that are recessed upward at positions in contact with the protrusions 752b near the left and right sides of the bottom surface 752l. The pair of concave portions 752c is a contact portion with the projecting portion 752b and is drilled to the inside thereof.

  On the other hand, the lower pusher member 754 has a lower groove 754a having a semispherical cross section corresponding to the shape of the bridging portion (lever operation portion) 730B of the lever 730 on the upper surface 754u. The lower pusher member 754 has a notch 754b that is recessed downward at the rear edge of the upper surface 754u. Further, the lower pusher portion 754 has a pair of projecting portions 754c projecting upward at positions in contact with the notch portions 754b in the vicinity of both left and right sides of the upper surface 754u. The pair of protrusions 754c has a pair of claws 754d extending to the notch 754b.

  Next, a process of attaching the pusher 750 to the second end of the lever 730 will be described. First, as shown in FIG. 32B, the central portion of the bridging portion (lever operation portion) 730B of the lever 730 is fitted into the lower groove 754a of the lower pusher member 754.

In this state, the pair of protrusions 754c of the lower pusher portion 754 are fitted into the pair of recesses 752c of the upper pusher portion 752 while the pair of claws 754d of the lower pusher member 754 are hooked on the protrusion portions 752b of the upper pusher member 752. To do. Thus, the upper surface 754u of the lower pusher member 754 and the bottom surface 7521 of the upper pusher portion 752 are in contact with each other, and the central portion of the bridging portion (lever operation portion) 730B of the lever 730 is the lower groove of the lower pusher member 754. The pusher 750 is attached to the bridging portion (operation portion) 730 </ b> B of the lever 730 while being sandwiched between the upper portion 754 a and the upper groove 752 a of the upper pusher member 752.

  As described above, since the bridging portion (lever operation portion) 730B of the lever 730 has the U-shaped protrusion 732B, the pusher 750 can be prevented from rotating when the pusher 750 is pressurized. Also, as will be described later, by changing the height of only the lower pusher member 754, it is possible to deal with clip type inspection jig bodies having different heights.

  28 to 31, the clip open state holding mechanism 700 further includes a lock member 760 provided on the base frame 710. The lock member 760 engages with the second end (bridge portion) 730B of the lever 730 when the lever 730 is pressed down to hold the pressed state.

  The lock member 760 is pivotally attached to the rear end of the base frame 710 while being urged forward. Specifically, the lock member 760 includes a right swing plate 760R, a left swing plate 760L, and a bridging portion 760B that bridges between the right swing plate 760R and the left swing plate 760L. This bridging portion 760B is also called a lock release operation portion.

  The right swing plate 760R has a plate shape having a predetermined thickness in the lateral direction X and parallel to the YZ plane, and is substantially T-shaped. The right swing plate 760R protrudes rearward from the right support plate 762R extending in the vertical direction Z, the right front protrusion plate 764R protruding forward from the upper portion of the right support plate 762R, and the upper portion of the right support plate 762R. A right rear protruding plate 766R. The right support plate 762R has a width in the front-rear direction Y that increases from the bottom to the top. A right through hole 762Ra through which the right pivot pin 768R passes is formed in the lower portion of the right support plate 762R. Here, “pivot support” means that the concave portion and the convex portion are rotatably supported. The right front protruding plate 764R has a substantially triangular shape. That is, the right front protruding plate 764R has a right inclined surface 764Ra inclined obliquely downward to the front, and a right bottom surface 764Rb extending in the front-rear direction Y. The right inclined surface 764Ra functions as a right sliding surface that slides on the right end portion of the lever operation portion 730B of the lever 730. On the other hand, the combination of the right bottom surface 764Rb and the right front surface 762Rb of the right support plate 762R serves as a right locking portion that locks the right end portion of the lever operating portion 730B of the lever 730. That is, the right bottom surface 764Rb functions as a right locking surface. Note that “locking” refers to engaging and stopping.

  On the other hand, the right base portion 710R of the base plate 710 has a right accommodation recess 713R that accommodates the right support plate 762R of the right swing plate 760R in a swingable manner at the rear end thereof. A right through hole 713Ra through which the right pivot pin 768R passes in the left-right direction X is formed in the right end portion of the right base portion 710R and the bridging portion 710B of the base plate 710 through the right receiving recess 713R. Accordingly, by inserting the right pivot pin 768R into the right through hole 713Ra and the right through hole 762Ra in a state where the lower portion of the right support plate 762R of the right swing plate 760R is accommodated in the right accommodation recess 713R of the right base portion 710R. The right swing plate 760R is supported so as to be swingable around the right pivot pin 768R.

  Similarly, the left swing plate 760L has a plate shape having a predetermined thickness in the lateral direction X and parallel to the YZ plane, and is substantially T-shaped. The left swing plate 760L protrudes rearward from the left support plate 762L extending in the vertical direction Z, the left front protrusion plate 764L protruding forward from the upper portion of the left support plate 762L, and the upper portion of the left support plate 762L. A left rear protruding plate 766L. The left support plate 762L becomes wider in the front-rear direction Y as it goes from below to above. A left through hole 762La through which the left pivot pin 768L passes is formed in the lower portion of the left support plate 762L. The left front protruding plate 764L has a substantially triangular shape. That is, the left front protruding plate 764L has a left inclined surface 764La inclined obliquely downward to the front, and a left bottom surface (not shown) extending in the front-rear direction Y. The left inclined surface 764La functions as a left sliding surface that slides on the left end portion of the lever operating portion 730B of the lever 730. On the other hand, the combination of the left bottom surface and the left front surface 762Lb of the left support plate 762L serves as a left locking portion that locks the left end portion of the lever operating portion 730B of the lever 730. That is, the left bottom surface serves as a right locking surface.

  On the other hand, the left base portion 710L of the base plate 710 has, at its rear end portion, a left receiving recess 713L that can swingably receive the left support plate 762L of the left swing plate 760L. A left through hole 713La through which the left pivot pin 768L penetrates in the left-right direction X is formed in the left end portion of the left base portion 710L and the bridging portion 710B of the base plate 710 through the left receiving recess 713L. Accordingly, by inserting the left pivot pin 768L into the left through hole 713La and the left through hole 762La in a state where the lower portion of the left support plate 762L of the left swing plate 760L is accommodated in the left accommodation recess 713L of the left base portion 710L. The left swing plate 760L is supported so as to be swingable around the left pivot pin 768L.

  Although not shown, the right accommodating recess 713R and the left accommodating recess 713L also accommodate a spring that urges the lock member 760 to always fall forward.

  The bridging portion (lock release operation portion) 760B is bridged between the right rear projecting plate 766R of the right swing plate 760R and the left rear projecting plate 766L of the left swing plate 760L. The bridging portion (lock release operation portion) 760B is for releasing the lock of the lever 730 by the lock member 760, as will be described later.

  In any case, the illustrated clip open state holding mechanism 700 includes a base plate 710 that is detachably attached to the printed circuit board 300, a lever 730 that is rotatably attached to the base plate 710, and an operatively operated lever 730. And a connected pusher 750. Then, by operating the lever 710, the pusher 760 is moved downward to press the operation portion 452 (the rear end of the clip) of the clip type inspection jig main body 400.

  In addition, in the illustrated clip open state holding mechanism 700, all the components (the base plate 710, the lever 730, the pusher 750, and the lock member 760) are symmetrical. Therefore, it is difficult for assembly errors to occur and the yield is good. Further, even when the clip open state holding mechanism 700 is used, since all parts are symmetrical, it can be used regardless of the operator (operator) dominant hand.

  Anyway, the clip open state holding mechanism 700 is operatively attached to the base frame 710 that is detachably provided on the printed circuit board 300, the lever 730 that is rotatably attached to the base frame 710, and the lever 730. And a combined pusher 750. According to the clip open state holding mechanism 700 having such a configuration, the pusher 750 can be moved downward by operating the lever 730 and the rear end (operation part) 452 of the clip can be pressed.

  Next, the operation of the clip type inspection jig shown in FIG. 28 will be described with reference to FIG.

  FIG. 33A shows the initial state of the clip-type inspection jig. In this state, the clip-type inspection jig main body 400 is in a state where the clamping portion is closed. On the other hand, in the clip open state holding mechanism 700, the pusher 750 is placed above the operation unit 452 of the clip type inspection jig main body 400. At this time, the right end portion and the left end portion of the bridging portion (lever operation portion) 730B of the lever 730 are the right inclined surface (right sliding surface) 764Ra and the left swing plate 760L of the right swing plate 760R of the lock member 760, respectively. The left inclined surface (left sliding surface) 764La is engaged.

  In this state, as shown in FIG. 33B, it is assumed that the operator (operator) pushes down the lever operation portion 730B (pusher 750) of the lever 730 in the direction indicated by the arrow C1. In this case, the lever operating portion 730B of the lever 730 is on the right inclined surface (right sliding surface) 764Ra of the right swing plate 760R of the lock member 760 and on the left inclined surface (left sliding surface) 764La of the left swing plate 760L. , The lock member 760 rotates clockwise around its right pivot pin 768R and left pivot pin 768L. As a result, as shown in FIG. 33B, the pusher 750 comes into contact with the operation portion 452 of the clip type inspection jig main body 400. Here, “contact” means contact with the abutted state.

  After that, as shown in FIG. 33C, the operator (operator) further presses down the lever operation portion 730B (pusher 750) of the lever 730 in the direction indicated by the arrow C2 with his / her hand. To do. Accordingly, the pusher 750 pushes down the operation unit 452 of the clip type inspection jig main body 400. Thereby, the top cover 450 rotates clockwise around the shaft 460 (FIG. 29), and the pair of closing coil springs 470 (FIG. 3) are compressed. Then, the pusher 430 (FIG. 29) of the clip type inspection jig main body 400 is lifted by the pair of lifting coil springs, and the protrusion 434 of the pusher 430 follows the contact portion 453 (FIG. 29) of the top cover 450. .

  At the same time, the lever operation portion 730B of the lever 730 and the right inclined surface (right sliding surface) 764Ra of the right swing plate 760R of the lock member 760 and the left inclined surface (left sliding surface) 764La of the left swing plate 760L. Since the locking is released, the lock member 760 hooks the lever 730. More specifically, the lock member 760 always has the right pivot pin 768R and the left pivot supported by the biasing force of the spring (not shown) housed in the right housing recess 713R and the left housing recess 713L of the base frame 710. The support pin 768 </ b> L is biased in a direction to fall forward counterclockwise. Therefore, when the locking is released, the locking member 760 automatically falls forward in the direction indicated by the arrow C3 in FIG. 33C due to the biasing force of the spring. As a result, the lever 730 is locked by the lock member 760. That is, the right end portion and the left end portion of the lever operation portion 730B of the lever 730 are locked by the right side locking portion of the right side rocking plate 760R and the left side locking portion of the left side rocking plate 760L, respectively.

  As a result, as shown in FIG. 33C, the clip-type inspection jig main body 400 is held in a state in which the clamping portion is opened.

  In this state, as shown in FIG. 29, the operator (operator) inserts and positions the flexible printed circuit (FPC) 200 that is the inspection object into the holding portion of the clip type inspection jig main body 400.

  When the positioning of the flexible printed circuit (FPC) 200 is completed, the operator (operator) holds the unlocking operation portion 760B of the lock member 760 in the direction indicated by the arrow C4 in FIG. The lock member 760 is rotated clockwise around the right pivot pin 768R and the left pivot pin 768L and tilted backward. Thus, the engagement between the right end portion and the left end portion of the lever operating portion 730B of the lever 730 and the right engaging portion of the right swing plate 760R and the left engaging portion of the left swing plate 760L of the lock member 760 is established. Canceled. That is, the lock between the lock member 760 and the lever 730 is released. As a result, the pair of closing coil springs 470 (FIG. 3) of the clip-type inspection jig body 400 is extended, so that the top cover 450 rotates counterclockwise around the shaft 460 (FIG. 29). Since the pusher 750 of the clip open state holding mechanism 700 is in contact with the operation portion 452 of the clip type inspection jig main body 400, the lever 730 has its rotation shaft 730Ra in the direction indicated by the arrow D5 in FIG. , Rotate around 730 La counterclockwise. In other words, the lever 730 returns (returns) to the initial state shown in FIG.

  At this time, the pusher 430 (FIG. 29) of the clip type inspection jig body 400 is pushed down by the top cover 450, and the pair of lifting coil springs are compressed. Accordingly, by pressing the flexible printed circuit (FPC) 200 with the plane of the pusher 430, as shown in FIG. 12, lower contact patterns 211 and 212 formed on the lower surface 200l of the flexible printed circuit (FPC) 200. Is brought into contact with the upper contact patterns 311 and 312 formed on the upper surface 300 u of the printed circuit board 300 through the film conductive pattern 132 of the low contact pressure connector 100. Accordingly, the flexible printed circuit (FPC) 200 is electrically connected to the printed circuit board 300.

FIG. 34 shows the distance L ₁ from the rotation shafts 730Ra and 730La of the lever 730 to the contact position between the pusher 750 and the operation part 452 of the clip type inspection jig body 400, and the sliding distance L at this contact position. ₂ is a right side view showing a relationship with FIG.

As shown in FIG. 34, the rotation shaft 730Ra of the lever 730, 730La is separated from the contact position of the operation portion 452 of the clip-inspecting jig body 400 by a distance _{L 1.} As a result, it is possible to extremely shorten the sliding distance L ₂ at the contact position between the operating portion 452 of the pusher 750 and the clip-inspecting jig body 400. Thereby, sliding between the pusher 750 of the clip open state holding mechanism 700 and the operation part 452 of the clip type inspection jig main body 400 can be reduced, and the damage (damage) due to rubbing of the clip type inspection jig main body 400 can be reduced. Can be suppressed.

  With reference to FIG. 35, the correspondence to the clip type inspection jig bodies 400 and 400A having different heights will be described. 35A, the pusher 750 of the clip open state holding mechanism 600 according to the present embodiment adapted to the clip type inspection jig main body 400 shown in FIG. FIG. 14B is a schematic right side view showing a state in which the operation unit 452 is in contact, and FIG. 750A is a schematic right side view showing a state where 750A is in contact with the operation portion 452 of the top cover 450 of the clip type inspection jig body 400A.

  However, in FIGS. 35A and 35B, the clip type inspection jig main bodies 400 and 400A are not shown for simplification of the drawings.

As described above, the first clip height H ₂ of the clip-type inspection jig body 400A is lower than the second clip height H ₁ of the clip-type inspection jig body 400 (H ₂ <H ₁ ).

In such a case, as shown in FIGS. 35 (A) and 35 (B), it can be handled by replacing the pushers 750 and 750A suitable for the clip heights H ₁ and H ₂ of the clip type inspection jig main bodies 400 and 400A. Is possible. The pusher 750 of the clip open state holding mechanism 700 adapted to the clip type inspection jig main body 400 has a first pusher height H _p1 and the pusher 750A of the clip open state holding mechanism 700A adapted to the clip type inspection jig main body 400A. Has a second pusher height _Hp2 . The first pusher height H _p1 is lower than the second pusher height H _p2 (H _p1 <H _p2 ).

  By doing so, the heights of the lock members 760 of the clip open state holding mechanisms 700 and 700A do not change, so that they can be replaced by replacing only one part of the pusher. That is, without changing the height of the lock member 760, by changing to the pusher 750, 750A having a different pusher height of the clip open state holding mechanism 700, 700A, the clip type inspection jig main body 400, 400A having a different clip height. Is available.

  When the pusher height of the pusher is changed, as shown in FIG. 32, the upper pusher member 752 is made common and the height of only the lower pusher member 764 may be changed.

  The pusher used in the clip open state holding mechanism 700 according to the second embodiment is not limited to the above-described pusher, and various types can be used.

  A first modification 750B of the pusher will be described with reference to FIG. The pusher 750B shown has the same configuration as the pusher 750 shown in FIG. 32B except that the upper pusher member and the lower pusher member are changed as will be described later. Therefore, reference numerals 752A and 754A are assigned to the upper pusher member and the lower pusher member, respectively. Components having the same functions as those in FIG. 32B are denoted by the same reference numerals, and only different points will be described below for simplification of description.

  In the pusher 350 shown in FIG. 32 (B), the upper pusher member 752 and the lower pusher member 754 are hooked together using only the claw 754d provided at the rear end, and the upper pusher member 752 and the lower pusher member 754 Is fixed.

  On the other hand, in the pusher 750B shown in FIG. 36, not only the claw 754d provided at the rear end but also a claw (described later) provided at the front end is used, and the upper pusher member 752A and the lower pusher member 754A are used. Are hooked together to fix the upper pusher member 752A and the lower pusher member 754A. More specifically, the upper pusher member 752A has a protrusion 752e having a claw 752e that protrudes downward from the bottom surface 752l at the front end thereof. On the other hand, the lower pusher member 764A has a recessed portion 754e having an engaging portion 754f that is recessed from the upper surface 754u at the front end thereof.

  Accordingly, not only the claw 754d provided at the rear end of the lower pusher member 754A is hooked on the protrusion 752b of the upper pusher member 752A, but also the claw 752f provided at the front end of the upper pusher member 752A is engaged with the lower pusher member 754A. By hooking on the portion 754f, the upper pusher member 752A and the lower pusher member 754A can be firmly coupled to each other.

  A second modification 750C of the pusher will be described with reference to FIG. The illustrated pusher 750C has the same configuration as the pusher 750 illustrated in FIG. 32B except that the lower pusher member is changed as described later. Therefore, the lower pusher member is provided with a reference numeral 754B. Components having the same functions as those in FIG. 32B are denoted by the same reference numerals, and only different points will be described below for simplification of description.

  The illustrated lower pusher member 754 </ b> B is disposed between the lower pusher fixing portion 756 and the lower pusher movable portion 757 that are divided in the vertical direction Z, and between the lower pusher fixing portion 756 and the lower pusher movable portion 757. And a plurality of compression coil springs 758 (only one compression coil spring is shown in FIG. 37).

  Here, the combination of the upper pusher member 752 and the lower pusher fixing portion 756 is also called an upper pusher portion, and the lower pusher movable portion 757 is also called a lower pusher portion. Therefore, the compression coil spring 758 is disposed between the upper pusher portions (752, 756) and the lower pusher portion 756. As will be described later, the upper pusher portions (752, 756) and the lower pusher portion 756 are combined so as to be movable in the vertical direction Z within a certain range. The upper pusher portions (752, 756) are attached to the other end (lever operation portion) 730B of the lever 730.

  More specifically, the lower pusher movable portion 757 has a lower spring accommodating recess 757a for accommodating the compression coil spring 758 on the upper surface 757u thereof. On the other hand, the lower pusher fixing portion 756 has an upper spring accommodating recess 756a for accommodating the compression coil spring 758 on its bottom surface 756l. That is, the compression coil spring 758 is housed in a spring housing space formed by the lower spring housing recess 757a and the upper spring housing recess 756a.

  Further, the lower pusher movable portion 757 and the lower pusher fixing portion 756 have a sliding mechanism (guide mechanism) that allows them to slide (guide) each other along the vertical direction Z. More specifically, the lower pusher movable portion 757 has a pair of sliding plates (guide plates) 757b extending upward from the upper surface 757u at both ends in the front-rear direction. Each of the pair of sliding plates (guide plates) 757b has a pair of engaging protrusions 757c that protrude in the opposite direction (inner side) at the front end portions thereof. On the other hand, the lower pusher fixing portion 756 has a pair of guide groove holes 756b into which the pair of sliding plates (guide plates) 757b are respectively inserted. Further, the lower pusher fixing portion 756 protrudes in the direction away from the inner walls of the pair of guide groove holes 756b (outside), and a pair of engagements for locking the pair of engagement protrusions 757c, respectively. It has a stop projection 756c.

  According to the pusher 750C having such a configuration, the lower pusher movable portion (lower pusher portion) 757 has a pair of engaging projections 757c with respect to the lower pusher fixing portion (upper pusher portion) 756. It is possible to move in the vertical direction Z within a range (movable range) between a position where the locking protrusion 756c is locked and a position where the upper surface 757u of the lower pusher movable portion 757 contacts the bottom surface 756l of the lower pusher fixing portion 756. is there. In a state where no external force is applied to the pusher 750C, as shown in FIG. 37, the pair of engaging projections 757c are paired with a pair of engagement by the biasing force (extension force) of the compression coil spring 758. The lower pusher movable portion (lower pusher portion) 757 is separated from the lower pusher fixing portion (upper pusher portion) 756 in a state (position) locked to the protrusion 756c. The compression coil spring 758 is a spring that is stronger (harder) than the operating force (pushing force) of the pair of closing coil springs 470 (FIG. 3) that urges the top cover 450 upward in the clip-type inspection jig bodies 400 and 400A. Consists of

  By using the pusher 750C having such a configuration as a pusher of the clip open state holding mechanism, it is possible to deal with clip type inspection jig bodies having different heights by the movable range (fixed range). In other words, it is possible to deal with clip-type inspection jig bodies having different heights without exchanging the parts of the clip open state holding mechanism.

  In addition, the pusher used in the above-described embodiment has a structure in which the lever operation portion 730B of the lever 730 is sandwiched between the upper pusher member and the lower pusher member, and the assembly (production) method is used. Of course, it is not limited. For example, the pusher may be manufactured by molding the lever so that the pusher and the lever are firmly held together.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above embodiments. For example, in the above-described embodiment, the plurality of contact terminals are provided on the front surface of the substrate, but the plurality of contact terminals may be provided on the front surface of the clip. Further, in the above-described embodiment, a combination of a screw or a bolt and a nut is used as an attachment / detachment member that makes the clip open state holding mechanism attachable / detachable to / from the board. However, other attachment / detachment members are used. Of course, may be used.

It is a perspective view showing the state where the 1st clip type inspection jig main body to which the clip type inspection jig concerning the present invention is applied is mounted on the printed circuit board in which the input / output interface connector is mounted. FIG. 2 is an exploded perspective view of a first clip-type inspection jig main body illustrated in FIG. 1. It is sectional drawing of the 1st clip type inspection jig main part illustrated in FIG. It is the perspective view which looked at the flexible printed circuit (FPC) which is a 1st connection target object from the bottom face side. It is the perspective view which looked at the printed circuit board which is the 1st connection object from the upper surface side. It is a perspective view of an electrical connector (low contact pressure connector). It is sectional drawing about line VII-VII of FIG. It is sectional drawing about line VIII-VIII of FIG. FIG. 8 is an enlarged view of an electrical connector (low contact pressure connector) surrounded by an ellipse 9 in FIG. 7. FIG. 9 is an enlarged view of an electrical connector (low contact pressure connector) surrounded by an ellipse 10 in FIG. 8. It is a perspective view for demonstrating fitting operation | movement of the 1st clip type inspection jig main body shown in FIG. It is an expanded sectional view which shows the fitting state of the 1st clip type inspection jig main body shown in FIG. It is a perspective view showing the state where the 2nd clip type inspection jig main part to which the clip type inspection jig concerning the present invention is applied is mounted on the printed circuit board in which the input / output interface connector is mounted. It is a perspective view showing a clip type inspection jig concerning the 1st example of the present invention. It is a disassembled perspective view of the clip open state holding | maintenance mechanism based on the 1st Example of this invention used for the clip type inspection jig shown in FIG. It is a perspective view which shows a right-handed clip open state holding mechanism (A) and a left-handed clip open state holding mechanism (B). (A) shows a perspective view of the clip type inspection jig in a state where the clamping part is closed, and (B) is a cross-sectional view of the clip type inspection jig in a state where the clamping part is closed. (A) is a perspective view of the clip-type inspection jig in a state where the clamping part is open, and (B) is a cross-sectional view of the clip-type inspection jig in a state where the clamping part is open. It is a schematic sectional drawing which shows the initial state of the clip type inspection jig shown in FIG. It is a schematic sectional drawing which shows the state of a clip type inspection jig when a lever is rotated. It is a schematic sectional drawing which shows the state of a clip type inspection jig when the operation part of a clip type inspection jig main body reaches bottom dead center. It is a schematic sectional drawing which shows the state of a clip type test | inspection jig | tool when it operates until a lever strikes against a stopper. It is a schematic sectional drawing which shows the state of a clip type inspection jig when a flexible printed circuit (FPC) and a printed circuit board are electrically connected to each other via a low contact pressure connector. It is a schematic sectional drawing which shows each state of a clip type inspection jig for explaining correspondence to a clip type inspection jig main part which has different height. It is a perspective view which shows the 1st modification of the clip open state holding mechanism based on 1st Example of this invention. It is a perspective view which shows the 2nd modification of the clip open state holding mechanism which concerns on 1st Example of this invention. It is a perspective view which shows the 3rd modification of the clip open state holding mechanism which concerns on 1st Example of this invention. It is a perspective view of the clip type inspection jig concerning the 2nd example of the present invention. It is sectional drawing of the clip type inspection jig shown in FIG. It is a perspective view of the clip open state holding mechanism which concerns on the 2nd Example of this invention used for the clip type inspection jig shown in FIG. It is a disassembled perspective view of the clip open state holding mechanism shown in FIG. FIG. 31 is a diagram showing a configuration of a pusher used in the clip open state holding mechanism shown in FIG. 30, (A) is a perspective view showing an assembly in which the pusher is attached to a lever, and (B) is an exploded perspective view of the assembly. It is a figure and (C) is a right view of an assembly. It is a right view for demonstrating operation | movement of the clip type inspection jig shown in FIG. Right side view of the clip-type inspection jig, showing the relationship between the distance from the rotation axis of the lever to the contact position between the pusher and the operation part of the clip-type inspection jig and the sliding distance at this contact position. It is. It is a right view of a clip open state holding mechanism for explaining the correspondence to clip type inspection jigs having different heights. It is sectional drawing which shows the 1st modification of the pusher used for the clip open state holding | maintenance mechanism which concerns on 2nd Example of this invention. It is sectional drawing which shows the 2nd modification of the pusher used for the clip open state holding | maintenance mechanism which concerns on the 2nd Example of this invention.

Explanation of symbols

100 Electrical connector (low contact pressure connector)
132 Film conductive pattern 200 Flexible printed circuit (FPC, first connection object)
211, 212 Lower pad (lower contact pattern)
230 Liquid crystal display (LCD, module)
300 Printed circuit board (second connection object)
300u top surface 300l bottom surface 311 312 upper pad (upper contact pattern, contact terminal)
320 I / O interface connector 400, 400A Clip type inspection jig body 410 Bottom cover (supporting member, fixing member)
420 Inner frame 430 Pusher 431 Insertion port 440 Base member 450 Top cover 452 Operation part 453 Contact part 460 Shaft 470 Closing coil spring 600, 600A, 600B, 600C, 600D Clip open state holding mechanism 610 Base frame 610R Right column (right side) base frame)
610Rb Right guide groove 610L Left column (left base frame)
610Lb Left guide groove 612R Right side stopper 612L Left side stopper 620R, 620L Screw 630, 630A, 630B, 630C Lever 632 Support shaft 632u Upper end (first end)
632 l Lower end (second end)
633 Shaft for lever (second connecting part)
634, 634A, 634B, 634C Operation part 636R Right link support part 636L Left link support part 640 Link 640u Upper end part (first end)
640 l lower end (second end)
642 First link shaft (first connecting portion)
644 Second link shaft (third connecting portion)
650 pusher 652 upper pusher portion 652R right pusher guide portion 652Ra right guide piece 652L left pusher guide portion 652La left guide piece 652B bridge portion 654 lower pusher portion 654B pusher body 656R right compression spring 656L left compression spring 658L right screw 658R right screw 658R right screw , 700A Clip open state holding mechanism 710 Base frame 710R Right base portion 710L Left base portion 710B Bridge portion 711R Right nut housing portion 711L Left nut housing portion 712R Right guide groove (recess)
712L Left guide groove (concave)
713R Right receiving recess 713L Left receiving recess 720R Right nut 720L Left nut 730 Lever 730R Right arm 730Ra Tip (front end, first end, rotating shaft)
730L Left arm part 730La Tip (front end, first end, rotating shaft)
730B bridging part (lever operating part, second end)
732B U-shaped protrusion 750, 750A, 750B, 750C Pusher 752 Upper pusher member 752f Claw 754 Lower pusher member 754d Claw 756 Lower pusher fixing part 756a Upper spring accommodating recess 756b Guide groove hole 756c Locking protrusion 757 Movable part (lower pusher part)
757a Lower spring accommodating recess 757b Sliding plate (guide plate)
757c Engagement protrusion 758 Compression coil spring 760 Lock member 760R Right swing plate 760L Left swing plate 760B Cross-linking portion (lock release operation portion)
762R Right support plate 762Rb Right front surface 762L Left support plate 764R Right front protrusion plate 764Ra Right inclined surface (right sliding surface)
764Rb Right bottom surface (right locking surface)
764L Left front protruding plate 764La Left inclined surface (left sliding surface)
766R Right rear protruding plate 766L Left rear protruding plate 768R Right pivot pin 768L Left pivot pin BDC Bottom dead center

Claims (17)

A substrate, a clip pivotally attached to the substrate so that the tip is swingable while being biased toward the substrate, and a plurality of contacts provided on one of the clip and the tip surface of the substrate In the clip-type inspection jig having a clip-type inspection jig body with a terminal,
There is a clip open state holding mechanism that presses the rear end of the clip toward the substrate side and holds the space between the substrate and the tip of the clip in an open state, and the clip open state holding mechanism can be attached to and detached from the substrate. Clip-type inspection jig provided. The clip open state holding mechanism is
A base frame that is detachably attached to the substrate;
A lever pivotally supported at a position above the base frame, the lever having an operating portion at a first end;
A link having a first end rotatably coupled to a second end of the lever;
A pusher assembled to a position below the base frame so as to be movable up and down, the pusher having one end pivotably coupled to the second end of the link,
The clip-type inspection according to claim 1, wherein the pusher is moved up and down through the link by pressing the lever to press and release the rear end of the clip. jig. The clip open state holding mechanism connects the link and the pusher, a first connection portion that connects the link and the lever, a second connection portion that connects the lever and the base frame, and the link and the pusher. A third connecting portion,
The clip open state holding mechanism further includes a stopper that prevents the lever from rotating, and the stopper is configured such that the first connecting portion exceeds the bottom dead center of the clip and the second connecting portion. 3. The clip type inspection jig according to claim 2, wherein when the lever moves from one side to the other side across a line connecting the three connecting portions, the lever is prevented from further turning. . The pusher is
An upper pusher portion and a lower pusher portion that are divided into two in the vertical direction;
A compression spring disposed between the upper pusher portion and the lower pusher portion;
A coupling member that couples the upper pusher portion and the lower pusher portion so as to be able to approach and separate in a vertical direction within a certain range,
The clip type inspection jig according to claim 2 or 3, wherein the upper pusher portion is rotatably coupled to the second end of the link. The base frame includes a left base frame and a right base frame arranged on the left and right sides with the lever interposed therebetween, and the lever pivots between the left base frame and the right base frame. Supported,
The clip type inspection according to any one of claims 2 to 4, wherein each of the left base frame and the right base frame has a left guide groove and a right guide groove for guiding the vertical movement of the pusher on opposite surfaces, respectively. jig.   The clip-type inspection jig according to claim 5, wherein the left base frame, the right base frame, the link, and the pusher have a symmetrical shape. The clip open state holding mechanism is
A base frame that is detachably attached to the substrate;
A lever having a first end pivotably attached to the base frame;
A pusher attached to the second end of the lever;
A locking member provided on the base frame, the locking member engaging with a second end of the lever when the lever is depressed, and holding the depressed state;
The clip type inspection treatment according to claim 1, wherein the pusher is moved downward by pressing a second end of the lever to press a rear end of the clip. Ingredients. The pusher is
An upper pusher portion and a lower pusher portion which are divided into two in the vertical direction and combined so as to be movable in the vertical direction within a certain range;
A compression spring disposed between the upper pusher portion and the lower pusher portion;
The clip type inspection jig according to claim 7, wherein the upper pusher portion is attached to a second end of the lever. A clip that presses a rear end of a clip pivotally attached to the substrate so that the front end is oscillated while being biased toward the substrate side, and holds the substrate and the front end of the clip in an open state. An open state holding mechanism,
A clip open state holding mechanism that is detachably attached to the substrate. A base frame that is detachably attached to the substrate;
A lever pivotally attached to the base frame;
A pusher operatively coupled to the lever,
The clip open state holding mechanism according to claim 9, wherein the pusher is moved downward by operating the lever to press the rear end of the clip. The lever is pivotally supported at a position above the base frame, and an operating portion is provided at the first end.
The pusher is assembled at a position below the base frame so as to be movable up and down,
The clip open state holding mechanism further includes a link that connects the lever and the pusher, and a first end of the link is rotatably coupled to a second end of the lever, and a second end of the link. The end of the pusher is rotatably coupled to one end of the pusher,
11. The clip open state according to claim 10, wherein the pusher is moved up and down via the link by pressing the lever to press and release the rear end of the clip. Retention mechanism. The clip open state holding mechanism connects the link and the pusher, a first connection portion that connects the link and the lever, a second connection portion that connects the lever and the base frame, and the link and the pusher. A third connecting portion,
The clip open state holding mechanism further includes a stopper that prevents the lever from rotating, and the stopper is configured such that the first connecting portion exceeds the bottom dead center of the clip and the second connecting portion. The clip open state holding mechanism according to claim 11, wherein when the lever is moved from one side across the line connecting the three connecting portions to the other side, further rotation of the lever is prevented. . The pusher is
An upper pusher portion and a lower pusher portion that are divided into two in the vertical direction;
A compression spring disposed between the upper pusher portion and the lower pusher portion;
A coupling member that couples the upper pusher portion and the lower pusher portion so as to be able to approach and separate in a vertical direction within a certain range,
The clip open state holding mechanism according to claim 11 or 12, wherein the upper pusher portion is rotatably coupled to the second end of the link. The base frame includes a left base frame and a right base frame disposed on the left and right sides with the lever interposed therebetween, and the lever pivots between the left base frame and the right base frame. Supported,
14. The clip open state according to claim 11, wherein each of the left base frame and the right base frame has a left guide groove and a right guide groove for guiding the vertical movement of the pusher on opposite surfaces, respectively. Retention mechanism.   The clip open state holding mechanism according to claim 14, wherein the left base frame, the right base frame, the link, and the pusher have a symmetrical shape. A first end of the lever is pivotally attached to the base frame;
A second end of the lever is attached to the pusher;
The clip open state holding mechanism is a lock member provided in the base frame, and engages with a second end of the lever when the lever is pressed down to hold the pressed state. Further comprising
The clip open state holding according to claim 10, wherein the pusher is moved downward by pushing down the second end of the lever to press the rear end of the clip. mechanism. The pusher is
An upper pusher portion and a lower pusher portion which are divided into two in the vertical direction and combined so as to be movable in the vertical direction within a certain range;
A compression spring disposed between the upper pusher portion and the lower pusher portion;
The clip open state holding mechanism according to claim 16, wherein the upper pusher portion is attached to a second end of the lever.

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