JPS61111860A - Assembling method of long-form parts - Google Patents

Abstract

PURPOSE:To keep parts in an upright state easily and stable as well as to aim at improvements in assembling efficiency, by setting up a magnet at the backside to a parts supporting surface of an assembled work body, while setting both N and S poles to both sides of a longitudinal shaft of each magnetic material long-size part. CONSTITUTION:A permanent magnet 27 is set up at the side of a back surface 22 of a supporting surface 18 of a base body 14 as an assembled work body, and with both N and S poles of the permanent magnet 27, there can be making attraction operatable, which makes a long-form small coil spring 12 possible to be uprighted. With this constitution, this long-form small coil spring 13 is made holdable in a state of being uprighted so easily and stably to the supporting surface 18 without being turned over, whereby improvements in assembling efficiency in the small coil spring 13 are promotable. Accordingly, automation for assembling of a pushbutton switch for automatically feeding the small coil spring 13, etc., is well promotable so that trouble and time are reduced as compared with the case that setting operation of the small coil spring 13 is carried out with tweezers or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for assembling elongated parts such as coil springs, screws, shafts, etc.

[Prior Art] Conventionally, elongated parts made of magnetic material, such as steel coil springs, screws, shafts, etc., are mounted on the part support surface of an object to be assembled, with the longitudinal direction of the parts upright, and assembled. In this case, the elongated component is held with tweezers or the like, and the component is placed on the component support surface. At this time, the elongated component is placed with the bottom of the component in contact with the component support surface, and the width of the bottom of the component is smaller than the height in the longitudinal direction. . In other words, the component is unstable with respect to the component support surface, and for this reason, care must be taken when attaching the elongated component with tweezers or the like to prevent it from falling on the component support surface. I wanted it to be done.

[Problems to be Solved by the Invention] However, when a long component is mounted using the method described above, the component is unstable with respect to the component support surface, so the mounting process takes much time and effort. As a result, the efficiency of assembling long parts is low.

An object of the present invention is to make it possible to easily and stably hold elongated parts in an upright state, and to improve the efficiency of assembling elongated parts.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for attaching an elongated component made of a magnetic material to a component support surface of a to-be-assembled object with the longitudinal direction of the component in an upright state. In the method for assembling elongated parts, a magnet is arranged on the back side of the part support surface of the object to be assembled, and the north and south poles of the magnet are set on both sides of the substantially longitudinal axis of the elongated part. It is said that

[Function] According to the present invention, a magnet is arranged on the back side of the component support surface of the object to be assembled, and the N and S poles of the magnet create an attraction that allows the long component to stand upright in the longitudinal direction. It becomes possible to apply force.

This makes it possible to easily and stably hold the elongated component in an upright state on the component support surface, thereby making it possible to improve the efficiency of assembling the elongated component.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view showing a method of assembling a pushbutton switch according to an embodiment of the present invention, showing a state in which a coil spring is attached to a base as an assembly object, and FIG. 3 is a schematic diagram showing the attraction force exerted by the magnet on the coil spring, FIG. 4 is a perspective view showing the disassembled state of the pushbutton switch, and FIG. 5 is the assembled state. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5.

The pushbutton switch 1o shown in FIG. 5 is used for a keyboard of a personal computer, word processor, etc., and as shown in FIG. , and the base body 14. The base body 14 has a push button 1
An accommodation recess 15 is formed in which a pot can be accommodated, and an elongated hole 17 is formed on the side of the accommodation recess 15 to accommodate a matching claw part 16 formed on the push button 11 and a pot. The bottom surface of the housing recess 15 accommodates large and small coil springs 12.1.
3, and an annular protrusion 19 is formed on the support surface 18 to enable positioning of the bottom of the large coil spring 12. An annular protrusion 19 at the center position of the support surface 18
An operating body 20 that is swingable in the direction of arrow A in FIG. 6 is provided at an internal position. A protrusion 21 that can support the bottom of the small coil spring 13 is formed on the support surface 18 side of the actuating body 20 . Furthermore, an actuating protrusion 23 is formed on the back surface 22 side of the support surface 18 of the actuating body 20 .

The push button switch 10 is assembled by sequentially mounting the small coil spring 13, large coil spring 12, and push button 11 on the base body 14 as shown in FIG. Spring 13
The bottom part of the small coil spring 13 is attached to the protrusion 21, and the long small coil spring 13 is held upright on the support surface 18 in the longitudinal direction [direction B]. Large coil spring 12
The installation is carried out by inserting the large coil spring 12 into the outer periphery of the small coil spring 13 supported on the support surface 18, and the bottom of the large coil spring 12 is
The annular protrusion 19 is used for positioning. As a result, the large coil spring 12 is also supported and positioned upright on the support surface 18'' in the same manner as the small coil spring 13. The push button 11 is mounted by fitting the push button 11 into the accommodation recess 15 of the base 14, and the fitting claw 16 of the push button 11 and the long hole 1 of the base 14 are connected to each other.
7 is in a fitted state. At this time, the upper part of the small coil spring 13 is positioned on the protrusion 24 formed inside the push button 11, and at the same time, the upper part of the large coil spring 12 inserted into the outer periphery of the small coil spring 13 is also positioned. It can be positioned around the small coil spring 13.

Incidentally, the pushbutton switch 10 is assembled on a steel assembly stand 25 shown in FIGS. 1 and 2. The assembly table 25 has a mounting surface 26 for the base body 14 as a body to be assembled in a part thereof, and is entirely boxed. A permanent magnet 27 is attached inside the assembly table 25 corresponding to the center position of the mounting surface 26, that is, at a position above the inside of the box. As shown in FIG. 2, the permanent magnet 27 is
The assembly table 25 is arranged so that the left side on the road center line C' is set to the north pole and the right side is set to the south pole, and an attractive force based on the magnet 17 is applied to the space above the mounting surface 26. That's what I do. The base 14 is placed on the mounting surface 26 by positioning so that the center line C of the assembly table 25 and the protrusion 21 formed at the center of the base 14 correspond to each other.
This is done in such a way that the back surface 22 of 8 and the mounting surface 26 are in contact with each other. As a result, as shown in FIG. 2, the permanent magnet 27 is placed on the back side of the protrusion 21 that positions the small coil spring 13, and the small coil spring 13 that is mounted upright on the protrusion 21 is The north pole is set on the left side of the longitudinal axis, and the south pole is set on the right side.

As a result, as shown in the schematic diagram of FIG. 3, the permanent magnet 27
The attractive force based on the N pole of the small coil spring 13 acts on the left side E of the small coil spring 13 as a long component, and the attractive force based on the S pole acts on the right side F of the small coil spring 13. It is considered possible. That is, the attractive force based on the N and S poles acts symmetrically along the longitudinal direction [direction B] of the small coil spring 13 and in the direction of arrow G, and as a result, the small coil spring 13 is pulled toward the support surface 18. It becomes possible to maintain the longitudinal direction [D direction] in an upright state at the top. In this state, the large coil spring 12 is attached to the outer periphery of the small coil spring 13, and the push button 11 is further attached to assemble the push button switch 10 on the assembly table 25.

The pushbutton switch 10 assembled in this way is
By pressing the push button 11 in the direction of arrow H in FIG. 6, the push button 11 is slid in the direction of arrow J. That is, the pushbutton switch 10 can apply a force in the contraction direction to the small coil spring 13 by applying a pressing force to the pushbutton 11 in the direction of the arrow. When a force in the direction of contraction is applied to the small coil spring 13, the biasing force of the small coil spring 13 makes it possible to swing the operating body 20 to the position shown by the two-dot chain line K in FIG. A touch sensor (not shown) or the like is provided at a position opposite to the actuating protrusion 23 of the actuating body 20 to be swung, and the actuating protrusion 23 is connected to the push button 11 shown by the two-dot chain line K.
As the actuating body 20 swings downward due to the suppression, it becomes possible to contact the touch sensor. The touch sensor is capable of transmitting an activation signal upon contact with the activation protrusion 23, and the signal is transmitted to a material temperature main body such as a personal computer or a word processor, for example.

When the push button 11 is pressed in the direction indicated by the arrow H, the push button 11 is returned to its original state, that is, the state shown in FIG. It is also possible to release the contact between the operating protrusion 23 and the touch sensor at the same time.

Next, the operation of the above embodiment will be explained.

According to the assembly method according to the above embodiment, the permanent magnet 27 is arranged on the back surface 22 side of the support surface 18 of the base body 14 as the object to be assembled, and the N and S poles of the permanent magnet 27 are used to form a long shape. It becomes possible to apply a suction force that allows the small coil spring 13 to stand upright. As a result, the elongated small coil spring 13 can be easily and stably held upright on the support surface 18 without falling over, and the assembly efficiency of the small coil spring 13 can be improved. can. Therefore, it is possible to automate the assembly of the pushbutton switch 10, for example by automatically supplying the small coil spring 13, which greatly reduces the effort and time compared to attaching the small coil spring 13 using tweezers or the like. It will be done. In addition, in the above embodiment, the magnet is a permanent magnet 27, but
An electromagnet may be used instead of the permanent magnet 27.

[Effects of the Invention] As described below, according to the present invention, an elongated component made of a magnetic material is attached to a component support surface of an assembly to be assembled with the longitudinal direction of the elongated component in an upright state. In the method for assembling parts, a magnet is placed on the back side of the part supporting surface of the object to be assembled, and the north and south poles of the magnet are set on both sides of the long axis of the long part. It is possible to easily and stably hold the elongated parts in an upright state, and it is possible to improve the efficiency of assembling the elongated parts.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing a method of assembling a pushbutton switch according to an embodiment of the present invention, showing a state in which a coil spring is attached to a base as an assembly object, and FIG. Figure 3 is a schematic diagram showing the attractive force exerted by the magnet on the coil spring, Figure 4 is a perspective view showing the disassembled state of the pushbutton switch, and Figure 5 is the assembled state. FIG. 6 is a perspective view showing the pushbutton switch in the state, and FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. 12... Large coil spring, 13... Small coil spring, 14... Base, 18... Support surface, 22...
...Back, 27...Permanent magnet

Claims (1)

[Claims] (1) In a method for assembling long parts, in which a long part made of a magnetic material is attached to a part support surface of an object to be assembled with the longitudinal direction of the part in an upright state, the back surface of the object to be assembled is A method for assembling an elongated part, characterized in that a magnet is placed on the side, and the north and south poles of the magnet are set on both sides of substantially the longitudinal axis of the elongated part.