JP4338629B2 - Slider and slider manufacturing method - Google Patents

Description

  The present invention relates to a slider suitable for obtaining a desired small sliding pressure and a method of manufacturing the slider.

  Conventionally, a sliding electronic component and a rotating electronic component are elastically contacted with a predetermined elastic contact force by a slider attached to a sliding object on a substrate provided with a sliding pattern such as a resistor pattern or a switch pattern. By moving (sliding or rotating) the sliding type object, the slider that moves integrally therewith is slidably contacted with the sliding contact pattern to change its electrical output (for example, patent) Reference 1). In recent years, downsizing of electronic devices has led to downsizing of drive sources such as drive motors that drive sliding type parts of these slide type electronic parts and rotary type electronic parts. It is required to reduce the driving force for driving the motor. Since the driving force of the sliding type object mainly depends on the sliding pressure against the sliding contact pattern of the slider fixed to the sliding type object, in order to reduce the driving force of the sliding type object, the sliding type It is effective to reduce the pressure. And when reducing the sliding pressure with respect to the pattern for sliding contact of a slider, the method of reducing the thickness of the elastic metal plate which comprises a slider is common.

However, there is a limit to reducing the thickness of the elastic metal plate constituting the slider, and further attempts to reduce the thickness of the slider have caused the following problems.
(1) If the slider is made too thin (for example, if the slider is made of phosphor bronze, the thickness is less than 0.06 mm), it will be easily bent like a metal foil. If the metal plate is continuously manufactured by pressing, the belt-like metal plate cannot be fed properly.

(2) When the slider is manufactured by press working, so-called sagging occurs. This is because the clearance between the press dies used for the press cannot be reduced to zero. Therefore, if the thickness of the metal plate is small, the clearance becomes relatively large, and the above-described sagging sagging occurs.

(3) If the slider is too thin, the strength when attached to a sliding object will be weak, and it will be bent easily when attached, or external force will be applied even if it is installed normally. There is a risk of bending easily.

(4) If you try to change the sliding pressure of the slider by a method other than changing the thickness, the shape of the slider will change, but if you do so, the shape of the entire press die that punches this out Therefore, a large number of press dies corresponding to the sliding pressure of the slider are required, which complicates the manufacturing and hinders a reduction in manufacturing cost.
JP 2003-178904 A

  SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a slider and a slider capable of easily obtaining a desired small sliding pressure and maintaining a required strength. It is to provide a manufacturing method.

  The invention according to claim 1 of the present application is an elastic metal plate, and includes a base fixed to another member, and a sliding booklet protruding from one side of the base and bent to one surface side of the base. In this slider, the width of the bent portion is narrowed by providing an opening or a notch in the bent portion of the sliding booklet.

  The invention according to claim 2 of the present application is a slider comprising a base fixed to another member by punching an elastic metal plate with a press die, and a sliding booklet protruding from one side of the base. In the manufacturing method of the slider in which the sliding booklet is given a predetermined sliding pressure by bending the sliding booklet of the extracted slider to one surface side of the base after When punching an elastic metal plate with a mold, this is done by punching an opening or notch of a shape selected according to the sliding pressure of the sliding booklet in a bent portion where the sliding booklet is bent in the subsequent process. In the manufacturing method of the slider, the width of the bent portion is narrowed.

  The invention according to claim 3 of the present application is characterized in that the change of the shape of the opening or notch is performed by changing the portion of the press die for punching the opening or notch in a nested manner. 2. The method for producing a slider according to 2.

  According to the first aspect of the present invention, the width of the bent portion is narrowed by providing an opening or a notch in the bent portion of the sliding booklet that is bent. Therefore, the sliding pressure of the sliding booklet can be effectively and easily reduced by providing an opening or notch in the bent portion. At that time, since it is not necessary to reduce the thickness of the entire slider, the strength of the entire slider can be maintained while being strong.

  According to invention of Claim 2, the slider which made the sliding pressure of the sliding booklet small as needed can be manufactured easily.

  According to the third aspect of the present invention, when it is desired to change only the sliding pressure in the same shape of the slider, it is only necessary to replace only the nesting portion without replacing the entire mold. The pressure slider can be easily manufactured, and the manufacturing cost can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing a slider 1-1 according to an embodiment of the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b) is a side view, and FIG. 1 (c) is a back view. is there. As shown in the figure, the slider 1-1 is formed of a thin plate-like elastic metal plate and fixed to another member such as a sliding object, and a base portion protruding from one side of the base portion 11. 11 and a pair of sliding booklets 21 that are bent to one surface side (the lower surface side in the figure). Each component will be described below. In this embodiment, the elastic metal plate constituting the slider 1-1 uses a phosphor bronze plate, and its thickness is 0.06 mm. The base portion 11 is a substantially rectangular flat plate, and an attachment portion 13 formed of a circular through hole and a feed hole 15 formed of an oval through hole are provided therein. On the other hand, the pair of sliding booklets 21 are thin strips, projecting in parallel toward the sliding direction A of the slider 10 from one side in the short direction of the base 11, and further immediately after projecting from the base 11. Is provided with a bent portion 23 that is curved in a substantially arc shape, so that the entire tip side portion is bent toward one surface (lower surface in the drawing) of the base portion 11. A sliding contact portion 25 that protrudes in a substantially arc shape so as to protrude toward the direction away from the base portion 11 (downward in the drawing) is provided in the vicinity of the tip of the folded booklet 21 that is bent.

  In this embodiment, an opening 27 is provided in the bent portion 23 where the sliding booklet 21 is bent. The opening 27 has an oval shape (oblong shape), and its longitudinal direction (long axis direction) coincides with the protruding direction of the sliding booklet 21. Since the bent portion 23 is a main portion for generating a repulsive force that repels the sliding booklet 21 when it is pressed toward the base 11, that is, a sliding pressure, an opening 27 is provided in the bent portion 23. Thus, the substantial width of the sliding booklet 21 in the bent portion 23 is narrowed, thereby effectively and easily reducing the sliding pressure of the sliding booklet 21. At that time, it is not necessary to reduce the thickness of the entire slider 1-1, and the strength of the entire slider 1-1 can be maintained.

  FIG. 2 is an exploded perspective view of the sliding electronic component 50 configured using the slider 1-1, and FIG. 3 is a partial side sectional view of the sliding electronic component 50. As shown in FIGS. 2 and 3, the slide type electronic component 50 accommodates the sliding type object 80 to which the slider 1-1 is attached in the accommodating portion 62 provided on the upper surface side of the circuit board 60 with the case. The upper part is covered with a cover 90. Here, the circuit board 60 with a case is configured by insert-molding a flexible circuit board 67 and metal terminals 73 in a case 61 made of synthetic resin. That is, the circuit board 60 with a case is formed by forming a pair of linear sliding contact patterns (in this embodiment, the resistor pattern 69 and the conductor pattern 71) in parallel on the upper surface of a synthetic resin film (for example, polyethylene terephthalate film). A flexible circuit board 67, metal terminals 73 installed near both ends of the flexible circuit board 67 so as to be connected to the ends of the resistor pattern 69 and the conductor pattern 71 of the flexible circuit board 67, and the flexible circuit board 67 A case 61 is formed so as to cover the outer periphery and the lower surface. The resistor pattern 69 and the conductor pattern 71 of the flexible circuit board 67 are exposed on the bottom surface of the concave storage portion 62 provided on the upper surface of the case 61, and the metal terminal 73 is bent into an L shape and one end thereof is a resistor. It is integrally fixed to the case 61 together with the flexible circuit board 67 while being in contact with the ends of the pattern 69 and the conductor pattern 71. The other end of the metal terminal 73 protrudes from the lower surface of the case 61 in the downward direction.

  The sliding mold 80 is formed by molding a synthetic resin. The sliding mold 80 has a substantially rectangular shape and is slidably accommodated in the accommodating portion 62 of the case 61, and a columnar shape from the upper surface of the mold body 81. And a lever 83 projecting from the head. A small protrusion 85 (see FIG. 3) protrudes from the lower surface of the mold body 81.

  The cover 90 is formed by forming a metal plate in a box shape with an open bottom surface, and a long hole 91 is provided at the center of the top surface to project the lever 83 of the sliding mold 80 so as to be slidable in the sliding direction A. In addition, four tongue-shaped attachment portions 93 project from the lower end side of the outer periphery. The cover 90 is formed in a dimensional shape covering the upper surface of the circuit board 60 with case.

  In order to assemble the slide-type electronic component 50, first, the slider 1-1 is first brought into contact with the lower surface of the mold body 81 of the slide mold 80, and the mounting portion provided on the slider 1-1 at that time. The small protrusion 85 of the sliding-type object 80 is inserted into 13 and the tip is fixed by heat caulking. Then, the mold body 81 of the sliding mold 80 to which the slider 1-1 is attached is housed in the housing portion 62 of the circuit board 60 with case, and a cover 90 is placed thereon so that each mounting portion 93 is connected to the circuit with case. The substrate 60 is bent and fixed to the lower surface side. As a result, the assembly of the sliding electronic component 50 is completed. At this time, as shown in FIG. 3, the lever 83 projects upward from the long hole 91 of the cover 90. The pair of sliding contact portions 25 of the slider 1-1 are in contact with the resistor pattern 69 and the conductor pattern 71 of the flexible circuit board 67, respectively. When the lever 83 is operated, the sliding contact portion 25 of the slider 1-1 slides on the resistor pattern 69 and the conductor pattern 71, whereby an electrical output between the metal terminals 73 (in this embodiment, resistance) Value) changes. By the way, according to the present embodiment, the sliding pressure (elastic contact force) of the slider 1-1 is a predetermined small sliding pressure by the opening 27 provided in the bent portion 23 as described above. The operation of the lever 83 of the slide-type object 80 attached with is lightened. Further, since the thickness of the slider 1-1 itself is not changed to reduce the sliding pressure of the slider 1-1, the strength of the slider 1-1 itself and the strength of the slider 1-1 are not changed. The attachment strength to the sliding object 80 can be kept strong.

  4 and 5 are explanatory views of the manufacturing method of the slider 1-1. FIG. 4 is a plan view of a main part showing a state in which the slider 1-1 is punched into the elastic metal plate 100. FIG. FIG. 5 is a schematic cross-sectional view (corresponding to the line BB in FIG. 4) showing a method of punching the metal plate 100 with the molds 200 and 250. That is, in order to manufacture the slider 1-1, a belt-like elastic metal plate 100 is prepared, and the slider 1-1 is punched out continuously by pressing in the elastic metal plate 100. One end of the base 11 of each slider 1-1 to be punched is connected to the elastic metal plate 100 side by a connecting portion 101, and finally the connecting portion 101 is cut to thereby provide a single slider 1-1. And The bending of the sliding booklet 21 to the one surface side of the base portion 11 may be performed before the connection portion 101 is cut or after the cutting.

  As a specific method of punching the slider 1-1 on the elastic metal plate 100, a belt-like elastic metal plate 100 is first prepared as shown in FIG. The elastic metal plate 100 is a phosphor bronze flat plate having a thickness of 0.06 mm. The elastic metal plate 100 is disposed between the fixed-side press die (die) 200 and the movable-side press die 250. The fixed-side press die 200 has an abutment surface 201 that abuts the elastic metal plate 100, and an opening 203 is provided at a position facing a portion where the elastic metal plate 100 is punched and removed. On the other hand, the movable-side press mold 250 also has an abutment surface 251 that abuts the elastic metal plate 100, and a protrusion 253 is provided at a position facing a portion where the elastic metal plate 100 is punched and removed. Each protrusion 253 has a size and shape that can be inserted into the opening 203 of the fixed-side press die 200, and punches the elastic metal plate 100 by this. That is, if the movable-side press die 250 is lowered from the state shown in FIG. 5 and pressed against the elastic metal plate 100 to be pressed, one slider 1-1 shown in FIG. 4 is obtained. Reference numerals 110 and 15 shown in FIG. 4 are feed holes for moving the elastic metal plate 100 and the slider 1-1. Then, the sliding booklet 21 of the slider 1-1 punched out in the next step is the dotted line portion shown in FIG. 4, that is, the bent portion 23 (see FIG. 1) where the sliding booklet 21 is bent. By bending to one surface side, the sliding booklet 21 is given a predetermined sliding pressure, and then the connecting portion 101 is cut to obtain a single slider 1-1. The sliding booklet 21 may be bent after the connecting portion 101 is cut as described above.

  By the way, in this embodiment, the opening part 203 for providing the opening 27 of the slider 1-1 of the said fixed side press metal mold | die 200, and the slider 1-1 of the movable side press metal mold 250 facing this. The protrusions 253 for providing the openings 27 are provided in inserts 210 and 260 that are detachably attached to the press dies 200 and 250, respectively. The reason why the inserts 210 and 260 are provided is to enable easy and inexpensive response to the change in the shape of the opening 27 of the slider 1-1 as described below.

  That is, in the present invention, the sliding pressure of the slider 1-1 is set to a predetermined small sliding pressure by providing the opening 27 in the slider 1-1. In some cases, it is desired to change only the sliding pressure. In such a case, the shape and dimensions of the opening 27 may be changed. However, the press dies 200 and 250 must be prepared for each slider 1-1 having a different shape of the opening 27. It becomes complicated and costs the mold. Therefore, in the present invention, a portion for punching the opening 27 of the press mold 200, 250 is a nesting system in which only the nesting 210, 260 is replaced, and only the number of the nesting 210, 260 corresponding to the required shape of the opening 27 is thereby obtained. In other words, the press dies 200 and 250 need not be changed as a whole. This will be specifically described below.

  6 and 7 are explanatory views of the manufacturing method of the slider 1-2. FIG. 6 is a plan view of the main part showing a state in which the slider 1-2 is punched into the elastic metal plate 100. FIG. It is a schematic sectional drawing (equivalent to the CC line part of Drawing 6) showing the method of punching metal plate 100 with metallic molds 200 and 250. 8 and 9 are explanatory views of the manufacturing method of the slider 1-3. FIG. 8 is a plan view of the main part showing a state in which the slider 1-3 is punched into the elastic metal plate 100. FIG. It is a schematic sectional drawing (equivalent to the EE line | wire part of FIG. 8) which shows the method of punching the elastic metal plate 100 by metal mold | die 200,250. In these drawings, the same parts as those shown in FIGS. 4 and 5 are denoted by the same reference numerals. Note that matters other than those described below are the same as in the above embodiment. The slider 1-2 shown in FIG. 6 is different from the slider 1-1 in that the shape of the opening 27-2 of the slider 1-2 is different from that of the opening 27 of the slider 1-1. Also, the width is small and the slit is formed. Further, the slider 1-3 shown in FIG. 8 is different from the slider 1-1 in that the slider 1-3 is not provided with an opening, and is the same as the conventional slider 1-3. Is a point.

  As shown in FIG. 7, when the slider 1-2 is punched by press working, the inserts 210, 200 of the press dies 200, 250 shown in FIG. 5 used for punching the slider 1-1, In place of 260, inserts 210-2 and 260-2 each having an opening 203 and a protruding portion 253 each having a shape for punching the opening 27-2 are mounted, and the elastic metal plate 100 is pressed by this to slide. The mover 1-2 is manufactured. On the other hand, as shown in FIG. 9, when the slider 1-3 is punched by press working, the inserts 210, 200 of the press dies 200, 250 shown in FIG. 5 used for punching the slider 1-1, The slider 1-3 is manufactured by removing 260 and pressing the elastic metal plate 100 thereby. Instead of the inserts 210 and 260, a slide 1-3 may be manufactured by attaching a insert having a shape without the opening 203 and the protrusion 253, and pressing the elastic metal plate 100 thereby.

  FIG. 10 is a plan view of a slider 1-4 according to still another embodiment of the present invention (however, before the sliding booklet 21 is bent on one surface side of the base 11 or the sliding contact portion 25 is provided). Status). In the slider 1-4 shown in the figure, the same reference numerals are given to the same or corresponding parts as the slider 1-1. Items other than those described below are the same as those of the slider 1-1. The slider 1-4 shown in the figure is different from the slider 1-1 in that instead of providing the opening 27 in the bent portion (the portion to be bent) 23 in the vicinity of the root of the sliding booklet 21, This is the point that a concave notch 29 for narrowing the width is provided. Even when the notch 29 is provided as described above, the width of the bent portion 23 can be narrowed as in the case where the opening 27 is provided. Therefore, the thickness of the slider 1-4 can be effectively and without changing. The sliding pressure of the sliding booklet 21 can be easily reduced. When the slider 1-4 is punched by press working, instead of the inserts 210 and 260 of the press dies 200 and 250 shown in FIG. 5 used for punching the slider 1-1, respectively. The slider 1-4 may be manufactured by attaching a nest having an opening and a projecting portion having a shape for punching the notch 29, and pressing the elastic metal plate.

  That is, in the present invention, the shape of the opening 27 or the notch 29 is changed by changing the portion of the press mold 200, 250 where the opening 27 or the notch 29 is punched out in a nested manner. When only the sliding pressure is desired to be changed in the shape of the sliding elements 1-1 to 1-4, it is only necessary to replace the nesting portion without replacing the mold itself. Not only can the child be manufactured easily, but the manufacturing cost can be reduced.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, the elastic metal plate constituting the slider is not limited to the phosphor bronze plate, and may be an elastic metal plate made of various other materials. Moreover, although the example which applied the slider which concerns on this invention to the slide-type electronic component was shown in the said embodiment, this slider is attached to various electronic components other than slide-type electronic components, such as a rotary electronic component. There may be. Further, fixing the base portion of the slider is not limited to the sliding type, and other various members may be used. The number of sliding booklets may not be two, but may be one or three or more. In some cases, only a part of the plurality of sliding booklets may be provided with an opening 27 or a notch 29 to reduce the sliding pressure. The shape of the opening 27 or the notch 29 provided in a plurality of sliding booklets may be different.

It is a figure which shows the slider 1-1, Fig.1 (a) is a top view, FIG.1 (b) is a side view, FIG.1 (c) is a back view. It is a disassembled perspective view of the slide type electronic component 50 comprised using the slider 1-1. FIG. 3 is a partial side sectional view of the sliding electronic component 50. It is manufacturing method explanatory drawing of the slider 1-1. It is manufacturing method explanatory drawing of the slider 1-1. It is manufacturing method explanatory drawing of the slider 1-2. It is manufacturing method explanatory drawing of the slider 1-2. It is manufacturing method explanatory drawing of the slider 1-3. It is manufacturing method explanatory drawing of the slider 1-3. It is a top view of slider 1-4.

Explanation of symbols

1-1 Slider 11 Base 13 Mounting portion 21 Sliding booklet 23 Bending portion 25 Sliding contact portion 27 Opening 50 Sliding electronic component 60 Circuit board with case 80 Sliding type object (other members)
90 Cover 100 Elastic metal plate 200 Fixed side press die (press die)
203 Opening 210 Nesting 250 Movable side press die (press die)
253 Protrusion 260 Nest 1-2 Slider 27-2 Opening 210-2 Nest 260-2 Nest 1-3 Slider 210-3 Nest 260-3 Nest 1-4 Slider 29 Notch

Claims (3)

In a slider comprising an elastic metal plate, a base fixed to another member, and a sliding booklet protruding from one side of the base and bent to one surface side of the base,
A slider characterized in that an opening or a notch is provided in a bent portion of the sliding booklet so that the width of the bent portion is narrow. After punching out the elastic metal plate with a press die, after extracting the slider comprising a base fixed to another member and a sliding booklet protruding from one side of the base,
In the manufacturing method of the slider that gives the sliding booklet a predetermined sliding pressure by bending the sliding booklet of the extracted slider to one side of the base,
When the elastic metal plate is punched by the press die, an opening or notch having a shape selected according to the sliding pressure of the sliding booklet is punched into a bent portion where the sliding booklet is bent in a subsequent process. The manufacturing method of the slider characterized by forming the width | variety of this bending part thinly.   3. The method of manufacturing a slider according to claim 2, wherein the shape of the opening or notch is changed by changing a portion of the press die where the opening or notch is punched out by a nesting method. .

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