JP2006181616A - Caulking method and caulking tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a caulking method and a caulking tool capable of obtaining a stable caulking quality by a simple operation. <P>SOLUTION: In the caulking method, an edge of a claw part FB on an object side is press-welded to an object to be fixed by folding a caulking piece F with an inclined line inclined with respect to a side edge of a leg part FA as a folding line IL. In the caulking tool, the depth of an insertion groove 9 in which the caulking piece F is inserted is set to be shallower than the width of the claw part FB, and the length L of the insertion groove 9 is set to be larger than the length FL of the claw part FB. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a caulking method and a caulking jig suitable for bending and caulking a caulking piece formed on an edge of the fixing body on the fixing object side in order to fix the fixing object to a fixing body formed of metal. .

  2. Description of the Related Art Conventionally, there is known a caulking method for fixing an object to be fixed to a fixed body by forming an inverted L-shaped caulking piece on a fixed body made of metal and bending (twisting) the caulking piece.

  For example, in a conventional liquid crystal display device, a panel holder is mounted on the back side (counterview side) of the liquid crystal display panel. In this panel holder, a control circuit board for driving liquid crystal connected to the liquid crystal display panel via a flexible substrate such as COF is attached, and when the liquid crystal display panel is transflective or transmissive, The backlight is also incorporated into the panel holder. The backlight is disposed between the liquid crystal display panel and the panel holder. On the other hand, the control circuit board is attached to the back side of the panel holder via a fixing means such as a double-sided adhesive tape.

  A panel assembly as a fixed object obtained by assembling a liquid crystal display panel and its peripheral parts based on the panel holder is housed in an outer case as a fixed body having side frames on four sides. A plurality of caulking pieces for fixing the panel assembly are integrally formed at the opening edge on the rear surface side of such an outer case, and after the panel assembly is stored in the outer case, each caulking piece is By pressing the back surface of the panel holder by caulking, the panel assembly is fixed to the exterior case (see, for example, Patent Document 1).

  FIG. 8 is an explanatory diagram for explaining a conventional caulking, and a caulking piece F for fixing an object SA to be fixed to the fixing body BA is formed on the fixing body BA. The caulking piece F includes a leg portion FA extending so as to stand substantially vertically from an end edge of the fixed body BA on the fixed object side, and a claw portion extending from the side edge of the leg portion FA. It is formed in an inverted L shape by FB. A plurality of the caulking pieces F are usually provided on the fixed body BA. Further, as shown in FIG. 8, the caulking piece F has a claw FB formed on the right edge of the leg FA, and a claw FB formed on the left edge of the leg FA. There is.

  In order to fix the fixed object SA to the fixed body BA, the operator holds the claw part FB with a general-purpose tool such as a commercially available radio pliers, and in this state, the claw part FB is moved to the arrow A in FIG. The claw portion FB is bent in the horizontal direction, and the claw portion FB is substantially flat by bending the claw portion FB in the horizontal direction as shown by the broken line in FIG. After plastically deforming in a U shape, the end of the claw FB on the fixed object side is pressed against the fixed object SA by pressing the claw FB downward as indicated by the arrow B in FIG. A caulking method is used.

JP 2004-302212 A

  However, in the conventional caulking method, the operator has to perform two operations, that is, the bending operation of the caulking piece F and the subsequent pressing operation, which requires a lot of time and labor. was there.

  Further, the conventional caulking method has a problem that a stable caulking quality cannot be obtained.

  That is, in order to stabilize the bending angle and the pressing amount of the caulking piece F, skill of the operator is necessary, and it is difficult to make the bending angle and the pressing amount of the caulking piece F different depending on the operator uniform. It is. In addition, when the bending angle of the caulking piece F and the variation in the push-down amount are large, the appearance quality is also deteriorated.

  Therefore, a caulking method and a caulking jig capable of obtaining stable caulking quality with a simple operation are required.

  The present invention has been made in view of the above points, and an object thereof is to provide a caulking method and a caulking jig capable of obtaining a stable caulking quality with a simple operation.

  In order to achieve the above-described object, the caulking method according to the present invention is characterized in that it is formed upright from an edge of the fixed body on the fixed object side in order to fix the fixed object to the fixed body formed of metal. In the caulking method, the caulking piece formed by the leg part and the claw part formed extending from the side edge of the leg part is bent, and the caulking piece is inclined with respect to the side edge of the leg part. By bending the inclined line as a folding line, the edge of the claw portion on the fixed object side is pressed against the fixed object.

  In the caulking method according to the present invention, it is preferable that an angle of the inclined line is in a range of 30 to 60 degrees, and the inclined line is a base end of an edge of the claw portion on the fixed object side. It is preferable that it is formed so that a part and the front-end | tip of the said leg part may be tied.

  The caulking jig according to the present invention is characterized by a leg portion standing upright from an end of the fixed body on the fixed object side and the leg section in order to fix the fixed object to the fixed body formed of metal. In a caulking jig for caulking and bending caulking pieces formed by claw portions formed to extend from the side edges of the caliper, the caulking piece has a bending main body, and the bending main body has a shaft. And a caulking portion provided at at least one end of the shaft portion, and the caulking portion is provided at an insertion groove having a vertically long rectangular cross section into which the caulking piece is inserted, and at one end of the insertion groove. And a positioning portion with which the tip of the claw portion abuts, the depth of the insertion groove is shallower than the width of the claw portion, and the length of the insertion groove is the claw portion. It is in the point formed longer than this length.

  In the caulking jig according to the present invention, when the caulking piece is inserted into the insertion groove so that the tip of the claw portion of the caulking piece is in contact with the positioning portion, the fixing object side of the claw portion of the caulking piece is Of the insertion groove such that a line connecting the base end portion of the end edge of the insertion groove and the opening side edge of the insertion groove forms an angle in a range of 30 to 60 degrees with respect to the side edge of the leg portion. Depth and length are preferably formed.

  Further, the caulking portions are provided at both ends of the shaft portion, respectively, one caulking portion is formed so as to be able to correspond to one rotation direction of the shaft portion, and the other caulking portion is the other of the shaft portions. It is preferable that it is formed so as to be compatible with the rotation direction.

  According to the caulking method of the present invention, the edge of the claw portion on the fixed object side is fixed to the fixed object by a simple operation of bending the inclined line inclined with respect to the side edge of the leg portion as a folding line. Therefore, it is possible to obtain an extremely excellent effect such that a stable caulking quality can be obtained with a simple operation. Moreover, according to the caulking jig according to the present invention, there are excellent effects such that the caulking method according to the present invention can be carried out reliably and easily.

  The present invention will be described below with reference to embodiments shown in the drawings. The caulking piece for fixing the fixed object to the fixed body is the same as in the prior art. Therefore, the structure of the fixed body, the caulking piece, and the fixed object are denoted by the same reference numerals in the drawings, and detailed description thereof is provided. Is omitted.

  1 to 4 show an embodiment of a caulking jig used in a caulking method according to the present invention. FIG. 1 is a perspective view showing a simplified main part of the overall configuration, and FIG. 2 is a front view of a bent main body. 3 is a side view of FIG. 2, and FIG. 4 is an enlarged bottom view of the main part of FIG.

  As shown in FIG. 1, the caulking jig 1 of the present embodiment includes a bending body 2 and a support base 3.

  The bending body 2 is for bending the caulking piece F, and as shown in FIGS. 2 to 4, has a shaft portion 4 formed in a rectangular section that is long in the vertical direction of FIG. 2. The shaft portion 4 is formed of a material having rigidity such as metal. A grip 5 held by the operator's hand is detachably attached to a central portion of the shaft portion 4 in the longitudinal direction shown in the vertical direction in FIG. 2 by a fixing means such as a bolt (not shown).

  Caulking portions 6 are provided at both ends of the shaft portion 4 in the longitudinal direction. These caulking portions 6 are formed symmetrically with the center of the shaft portion 4 as a symmetry plane. One of the caulking portions 6 shown in the lower part of FIG. It is possible to cope with caulking by clockwise rotation as seen. The other shown in the upper part of FIG. 2 is caulked by rotating the shaft part 4 upside down when the caulking piece F is caulked by rotating the shaft part 4 counterclockwise as viewed from above in FIG. It can be adapted to. That is, the folding main body 2 of this embodiment can be selectively used according to the bending direction of the crimping piece F.

  In addition, as the bending main body 2, a caulking portion 6 may be provided at one end of the shaft portion 4.

  Here, the caulking portion 6 will be described by exemplifying the caulking portion 6 shown below in FIG.

  The caulking portion 6 is formed by detachably attaching a substantially flat groove forming plate 7 to the right surface of FIG. 3 at the lower end portion of the shaft portion 4 by a fixing means such as a bolt (not shown). The groove forming plate 7 is attached so that the lower end surface thereof is flush with the lower end surface of the shaft portion 4. Further, as shown in FIG. 4, a concave portion 8 having a rectangular cross section having openings at the left end and the lower end is provided in a portion facing the shaft portion 4 at the lower end of the groove forming plate 7. An insertion groove 9 having a vertically long rectangular cross section into which the caulking piece F is inserted is formed by a space between the side wall and the side surface of the shaft portion 4 facing the side wall. Moreover, the part adjacent to the right side of FIG. 4 of the recessed part 8 of the lower end of the groove | channel formation board 7 is made into the positioning part 10 with which the front-end | tip of the said nail | claw part FB is contact | abutted. FIGS. 5 and 6 are enlarged views showing a state in which the caulking piece F is inserted into the insertion groove 9.

  As shown in FIGS. 5 and 6, the size of the insertion groove 9 is such that the depth D is shallower than the width FW of the claw portion FB, and the length L of the insertion groove 9 is the length of the claw portion FB. It is preferably formed longer than the length FL. Further, when the caulking piece F is inserted into the insertion groove 9 so that the tip of the claw part FB of the caulking piece F is in contact with the positioning part 10, the base end of the edge of the caulking piece F on the fixed object side of the claw part FB The line connecting the portion P and the opening end edge 9a of the insertion groove 9 has an angle θ in the range of 20 to 70 degrees, more preferably 30 to 60 degrees with respect to the side edge of the leg FA. It is preferable that the depth D and the length L of the insertion groove 9 are formed as it is. When the angle θ exceeds this range, a large force is required to bend the caulking piece F, and there is a tendency for workability deterioration and contact area reduction. When the angle θ is below this range, the pressure contact force against the fixed object SA tends to decrease. There is.

  For example, when the length FL of the claw portion FB of the caulking piece F is 3 mm, the width FW is 2 mm, and the thickness FT is 0.5 mm, the length L of the insertion groove 9 is 4 mm, the depth D is 1 mm, and the width W Can be mentioned as 0.6 mm. In this case, the angle θ of the line connecting the base end portion P of the claw portion FB of the caulking piece F and the end edge 9a on the opening side of the insertion groove 9 is formed to be approximately 45 degrees.

  In addition, as the bending main body 2, a plurality of fixing pieces that can be attached to and detached from the shaft portion 4 are formed according to the type of the caulking piece F, and the fixing piece is changed according to the type of the caulking piece F used for the caulking work. Good.

  Further, the bending main body 2 may be configured such that the insertion groove 9 is directly formed in the lower end portion of the shaft portion 4.

  Further, the lower end surface of the shaft portion 4 and the lower end surface of the groove forming plate 7 are stepped, for example, when the caulking piece F is caulked, with respect to the shaft portion 4 on the fulcrum side (in the rotational direction of the shaft portion 4). In addition, the lower end surface of the groove forming plate 7 may be arranged approximately half the depth of the insertion groove 9.

  Returning to FIG. 1, the support base 3 is for detachably supporting the fixed body BA, and the fixed base BA is positioned and supported at a predetermined position in the center of the upper surface of the support base 3. Can be done. Further, stoppers 11 for restricting the rotation angle of the shaft portion 4 are disposed at the four corners of the upper surface of the support base 3, respectively. These stoppers 11 are attached to or integrally formed with the support base 3 and have a substantially flat L-shaped attachment body 11a, and are screwed to the attachment body 11a so that the tip is provided on the rotation path of the bending body 2. And an adjusting screw 11b. The tip of the adjusting screw 11b is normally disposed at a position spaced from the bending body 2, and the rotation angle of the bending body 2, that is, the shaft portion 4, is 20 degrees to 70 degrees, more preferably 30 degrees. To 60 degrees. When the rotation angle of the bent body 2 exceeds this range, the workability associated with an increase in the pressure contact force with respect to the fixed object SA tends to deteriorate, and when the rotation angle falls below this range, the pressure contact force with respect to the fixed object SA tends to decrease. is there.

  The caulking jig 1 may be attached to the support base 3. In this case, a configuration is provided in which a shaft support portion is provided at a predetermined position of the support base 3, and a central portion of the shaft portion 4 where the grip 5 is not provided is supported on the shaft support portion so as to be rotatable and movable in the axial direction. Good. Further, instead of the grip 5, a grip portion that can be gripped by the operator is attached to the upper end portion of the shaft portion 4, and a compression coil spring is provided between the grip portion on the outer periphery of the shaft portion 4 and the shaft support portion. It is good to set it as the structure which mounts | wears and latches one end of a compression coil spring to a holding part, and a shaft support part latches the other end. Thereby, since the return operation | movement to the initial position after moving the bending main body 2 to an up-down direction or rotating can be easily performed with the spring force of a compression coil spring, workability | operativity can be improved. it can.

  Next, the operation of the present embodiment having the above-described configuration will be described together with the caulking method of the present invention.

  The caulking method of the present embodiment is carried out using the caulking jig 1 of the present embodiment shown in FIGS.

  And the caulking method of this embodiment is implemented by mounting fixed body BA which has fixed object SA arrange | positioned in the predetermined position of the support stand 3, as shown in FIG.

  Next, the grip 5 of the bending body 2 is gripped, and the insertion groove 9 of the crimping portion 6 of the bending body 2 is inserted into the crimping piece F. At this time, as shown in FIGS. 5 and 6, the tip of the claw portion FB of the caulking piece F is brought into contact with the positioning portion 10.

  Next, when the shaft portion 4 is rotated in a predetermined direction, the folding main body 2 performs caulking.

  At this time, the caulking piece F folds a line connecting the base end part P of the claw part FB and the end edge 9a on the opening side of the insertion groove 9, that is, an inclined line inclined with respect to the side edge of the leg part FA. Bends as curve IL. By making this folding line IL into an inclined line, the edge of the claw portion FB on the fixed object side can be pressed against the fixed object SA. That is, when the caulking piece F is bent, in addition to the deformation of the caulking piece F in the thickness direction, a deformation along the longitudinal direction of the shaft portion 4, a so-called Z component can be easily added. FIG. 7 shows a bent state of the caulking piece F by this caulking method.

  That is, according to the caulking method of the present embodiment, the end on the fixed object side of the claw part FB can be reliably pressed against the fixed object SA simply by rotating the shaft part 4.

  As described above, according to the caulking method of the present embodiment, the claw piece FB on the fixed object side of the claw part FB is bent by bending the inclined line F inclined with respect to the side edge of the leg part FA as the folding line IL. The end edge is configured to be pressed against the fixed object SA, and two operations of a conventional crimping piece F bending operation and a subsequent pressing operation can be performed simultaneously. As a result, stable caulking quality can be easily obtained by a simple operation with less burden on the operator.

  Further, according to the caulking method of the present embodiment, the angle θ of the inclined line, that is, the angle θ of the folding line IL with respect to the side edge of the leg FA is in the range of 30 to 60 degrees. It is possible to appropriately obtain the pressure contact force that presses against the fixed object SA by the edge on the fixed object side.

  Furthermore, according to the caulking method of the present embodiment, the inclined line, that is, the folding line IL, is formed so as to connect the base end portion P of the edge on the fixed object side of the claw portion FB and the tip end of the leg portion FA. Therefore, the pressure contact force to the fixed object SA by the edge of the claw part FB on the fixed object side can be obtained more appropriately, easily and surely, and the bending base point is always constant. Therefore, variation can be reduced. As a result, it is possible to easily improve the caulking quality.

  Further, according to the caulking jig 1 of the present embodiment, the caulking piece F is provided with a bending body 2 for bending the caulking piece F, and the bending body 2 is provided at the shaft portion 4 and at least one end of the shaft portion 4. The caulking part 6 has a vertically long rectangular insertion groove 9 into which the caulking piece F is inserted, and the tip of the claw part FB is in contact with one end of the insertion groove 9. And the depth D of the insertion groove 9 is formed shallower than the width FW of the claw portion FB, and the length L of the insertion groove 9 is greater than the length FL of the claw portion FB. Since it is formed long, the caulking method of the present invention, that is, the caulking piece F on the fixed object side of the claw part FB is bent by bending an inclined line inclined with respect to the side edge of the leg part FA as a folding line IL. The caulking method in which the edge is pressed against the fixed object SA is easily performed in a simple process. It can be.

  That is, according to the caulking jig 1 of this embodiment, the shaft portion 4 of the bent main body 2 is inserted into the caulking piece F of the insertion groove 9 of the caulking portion 6 of the bent main body 2, and the claw portion FB of the caulking piece F is obtained. The edge of the claw portion FB on the fixed object side can be easily brought into pressure contact with the fixed object SA by a simple operation of rotating the shaft part 4 in a state where the front end of the claw is in contact with the positioning part 10.

  Furthermore, according to the caulking jig 1 of this embodiment, when the caulking piece F is inserted into the insertion groove 9 so that the tip of the claw part FB of the caulking piece F contacts the positioning part 10, the claw part of the caulking piece F An angle θ between the line connecting the base end portion P of the FB fixed object side edge and the opening end edge 9a of the insertion groove 9 is in the range of 30 to 60 degrees with respect to the side edge of the leg FA. The depth D and the length L of the insertion groove 9 are formed so that the folding line IL is inclined with respect to the side edge of the leg FA of the caulking piece F. Easy and reliable.

  Further, according to the caulking jig 1 of the present embodiment, the caulking portions 6 are provided at both ends of the shaft portion 4, respectively, and one caulking portion 6 is formed so as to correspond to one rotation direction of the shaft portion 4. In addition, since the other caulking portion 6 is formed so as to correspond to the other rotation direction of the shaft portion 4, it can be easily used depending on the bending direction of the caulking piece F.

  Furthermore, according to the caulking jig 1 of the present embodiment, the support base 3 that removably supports the fixed body BA and the stopper 11 that regulates the rotation angle of the shaft portion 4 are provided. The rotation angle of 4 can be easily controlled. As a result, the caulking quality and the appearance quality can be kept high. Note that the rotation angle of the shaft portion 4 is in the range of 20 degrees to 70 degrees, more preferably in the range of 30 degrees to 60 degrees, to the fixed object SA by the edge of the claw part FB on the fixed object side. It is preferable for making the pressure contact force appropriate.

  Therefore, according to the caulking method and the caulking jig 1 of this embodiment, there are extremely excellent effects such as being able to obtain a stable caulking quality by a simple operation.

  The present invention can be used for a wide variety of assembled products using caulking, including liquid crystal display devices.

  The present invention is not limited to the above-described embodiments, and various modifications can be made as necessary.

The perspective view which simplifies and shows the principal part of the whole structure of embodiment of the crimping jig which concerns on this invention The front view which shows the principal part of the bending main body of FIG. Side view of essential parts of FIG. 2 is an enlarged bottom view of the main part of FIG. The front view which expands and shows the state which inserted the crimping piece in the insertion groove | channel of FIG. Vertical section of FIG. Explanatory drawing explaining the bending state of the crimping piece by embodiment of the crimping method of this invention with a bending angle Explanatory drawing explaining the conventional caulking method

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Caulking jig 2 Bending body 3 Support base 4 Shaft part 6 Caulking part 7 Groove formation board 9 Insertion groove 9a Edge 10 Positioning part 11 Stopper D (Insertion groove) Depth L (Insertion groove) Length W (Insertion groove) Width of insertion groove IL Folding curve θ Angle of bending curve with respect to side edge of leg P Base end BA Fixed body SA Fixed object F Clamping piece FA Leg part FB Claw part FW Width of caulking piece FL Length (of caulking piece) FT Thickness of (caulking piece)

Claims (6)

In order to fix an object to be fixed to a fixed body made of metal, a leg portion standing upright from an end edge of the fixed body on the fixed object side and a claw formed extending from the side edge of the leg portion In the caulking method, the caulking piece formed by the part is bent and caulked,
The caulking piece is bent with an inclined line inclined with respect to the side edge of the leg as a folding line, and the edge of the claw portion on the fixed object side is pressed against the fixed object. Method.   The caulking method according to claim 1, wherein an angle of the inclined line is in a range of 30 degrees to 60 degrees.   The caulking method according to claim 1 or 2, wherein the inclined line is formed so as to connect a base end portion of an end edge of the claw portion on the fixed object side and a tip end of the leg portion. In order to fix an object to be fixed to a fixed body made of metal, a leg portion standing upright from an end edge of the fixed body on the fixed object side and a claw formed extending from the side edge of the leg portion In the caulking jig for caulking and bending the caulking piece formed by
A bending body for bending the caulking piece;
The bent body has a shaft portion and a caulking portion provided at at least one end of the shaft portion;
The caulking portion includes an insertion groove having a vertically long rectangular cross section into which the caulking piece is inserted, and a positioning portion that is provided at one end of the insertion groove and is in contact with the tip of the claw portion,
The caulking jig is characterized in that the depth of the insertion groove is shallower than the width of the claw portion, and the length of the insertion groove is longer than the length of the claw portion.
Caulking jig on board.   When the caulking piece is inserted into the insertion groove so that the tip of the claw portion of the caulking piece contacts the positioning portion, the base end portion of the edge on the fixed object side of the claw portion of the caulking piece and the insertion The depth and length of the insertion groove are formed such that a line connecting the edge on the opening side of the groove forms an angle in the range of 30 degrees to 60 degrees with respect to the side edge of the leg portion. The crimping jig according to claim 4.   The caulking portions are respectively provided at both ends of the shaft portion, and one caulking portion is formed so as to correspond to one rotation direction of the shaft portion, and the other caulking portion is the other rotation direction of the shaft portion. The caulking jig according to claim 4 or 5, wherein the caulking jig is formed so as to be compatible with the above.

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