JPH0640133Y2 - Electronic component magazine stopper - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention is mounted in a magazine that stores and conveys electronic components such as ICs, chip resistors, capacitors, etc., and ensures proper storage of electronic components. The present invention relates to a stopper for an electronic component magazine used for holding.

(B) Conventional Technology FIG. 3 is a cross-sectional view showing a state in which a conventional stopper is mounted on an electronic component magazine.

The stopper 4 is made of, for example, a synthetic resin material, and is provided with a pair of flat plate-like or semi-cylindrical opposing strut pieces on both sides of a butterfly motion part 41 which is curved and has thin ends.
42, 42 are formed, and the pair of tension pieces 42, 42 are always urged outward.

In use, the pair of tension pieces 42, 42 are pressed inward against the spring force of the butterfly motion part 41 to reduce the expansion angle. While holding this state, the stopper 4 is inserted from the butterfly motion part 41 side into one end or both ends of the electronic component magazine 1 in which a plurality of chip resistors 2 are housed and arranged in a laminated manner. Then, with the butterfly motion part 41 in contact with the chip resistor 2 located at the end in the magazine 1, the outer surface of each of the tension pieces 42, 42 has a spring repulsion force (due to the reduced expansion angle). It is pressed against the inner wall of the opening end of the magazine 1 by the repulsive force) and locked in a surface contact state. As a result, the stacked chip resistor 2 is prevented from moving, and an appropriate stacked state is maintained.

(C) Problem to be Solved by the Invention The above-mentioned conventional stopper is to be loaded in the magazine by displacing the expansion angle of a pair of opposing strut pieces. Therefore, when the inner diameter of the magazine is small,
The pair of strut pieces are loaded in a state of surface contact with the inner wall of the magazine. Conversely, if the magazine inner diameter is large,
The pair of strut pieces make point contact with the inner wall of the magazine. As a result, the frictional force and the spring repulsion force of the stopper with respect to the magazine greatly differ depending on the size of the inner diameter of the magazine, that is, whether the supporting piece makes point contact or surface contact with the inner wall of the magazine.

Therefore, when the frictional force and the spring repulsion force of the stopper are not sufficient, for example, the opening inner diameter of the magazine is large, the expansion angle of the pair of strut pieces in the loaded state is large, and the magazine inner wall is contacted in a point state. If there is, the electronic components stored in the magazine collide with the stopper due to vibration during transportation, etc., and the stopper is easily moved. As a result, a gap is generated between the electronic components that are stored and held in the overlapped state, and the electronic components may be supplied in a laid down (tilted) state. In this case, the electronic components taken out from the magazine have a disadvantage that they cannot be properly mounted unless they are repositioned in the mounting work stage.

The present invention has been made in view of the above problems, and an electronic device that has a constant frictional force and an appropriate spring repulsion force regardless of the size of the inner diameter of the magazine and that maintains the proper storage state of the stored electronic components. It is intended to provide a stopper for a parts magazine.

(D) Means and Actions for Solving the Problem In order to achieve this object, the stopper for electronic parts magazine of the present invention has the following structure.

The stopper for an electronic component magazine has a pair of opposing strut pieces formed on both sides of the butterfly motion part, and always biases the strut pieces outwardly, and at the same time, the outer peripheral surface of the tip end of the strut piece is outwardly directed. It has a contact plane that projects and contacts the inner wall of the magazine, and is formed by projecting a bulging protrusion whose distance between both contact planes is set larger than the distance between the inner walls of the magazine.

In the stopper having such a structure, the protrusions having the contact planes are provided on the outer surfaces of the pair of tension pieces, respectively. Therefore, when the stopper is loaded in the magazine, the distance between the surface contact surfaces is shortened, and after the stopper is loaded, the surface contact surface of the protrusion is fixed by abutting (pressing) the inner wall of the magazine. It At this time, since the protrusions are provided on the outer peripheral surfaces of the pair of strut pieces, even if the size of the magazine to be loaded changes slightly, if the distance between both contact planes is made large, the inner wall and stopper The point of action of the spring force becomes constant, and the contact stability between the inner wall and the contact plane of the protrusion is increased. Therefore, the magazine can be stably loaded with a substantially constant holding force.

Further, the projections provided on the outer peripheral surfaces of the pair of strut pieces expand the spread angle between the opposite strut pieces in the normal state. That is, the expansion angle between the opposing strut pieces is set to be large by the height of the protruding portion, and the spring repulsion force of the stopper increases. Therefore, when the inner diameter of the magazine is small, of course, even when the inner diameter of the magazine is large, the spring repulsion force of the stopper is large. As a result, the pressing and fixing force of the stopper against the inner wall of the magazine is increased, and the stopper does not move in the longitudinal direction of the magazine by a slight external force such as vibration.

Therefore, the stacked state of the stored electronic components can be properly fixed and held.

(E) Embodiment FIG. 2 is a specific embodiment of the electronic component magazine stopper according to the present invention, and is a sectional view showing a state in which it is loaded in a magazine 1 for accommodating a plurality of chip resistors 2. .

The magazine 1 is a rectangular tubular case with open top and bottom,
The cross section of the case storage space is formed in a shape corresponding to the chip resistor 2 to be stored. A plurality of chip resistors 2 are stacked and housed in the magazine 1 in a stacked manner.
The stoppers 3 are removably loaded in the vicinity of the openings of both ends of the magazine 1, and fix the stacked state of the chip resistors 2 housed in a stacked state.

FIG. 1 is a perspective view showing the stopper 3.

The stopper 3 is formed by, for example, a pultrusion process of a synthetic resin material such as vinyl chloride, and a pair of opposing tensioning pieces 32, 32 are integrally formed on both sides of the butterfly motion part 31 so as to project. The butterfly motion part 31 is formed in the solid of a rectangular parallelepiped in the embodiment,
A thin flat plate-like tension piece from both ends of this rectangular parallelepiped
32 and 32 are provided so as to face each other. The tension pieces 32, 32 have a gradient of outward opening from the butterfly motion part 31 toward the tip end, and are always urged outward. Further, each of the pair of strut pieces 32, 32 has a contact plane 33a which is an outer peripheral surface and comes into contact with the inner wall of the magazine when the tip end portion of the strut piece 32 is placed in a magazine. The protruding portion 33 is set so that the distance is set larger than the distance between the inner walls of the magazine.

As shown in FIG. 2, the stopper 3 is loaded into the magazine 1 from the tip side of the strut piece 32, and the tip portion of the strut piece 32 is in contact with the chip resistor 2 housed therein. The chip resistor 2 is housed with its front surface side (molding side of the resistance film) facing the upper opening side of the magazine 1. Therefore, when the chip resistor 2 is mounted between the pattern lands 5 and 5 of the printed circuit board, for example, the stopper 3 mounted on the lower opening side of the magazine 1 as shown in FIG.
And the chip resistors 2 are taken out from the magazine 1 one by one.

In the stopper 3 having such a configuration, the protrusions 33 having the contact planes 33a that come into contact with the inner wall of the magazine are provided on the outer peripheral surfaces of the pair of protrusions 32, 32. Therefore, when the stopper 3 is loaded into the magazine 1, only the contact plane 33a of the protrusion 33 of the tension piece 32 comes into contact with the inner wall of the magazine 1. That is, regardless of the size of the inner diameter of the magazine, only the protrusion 33 is always in contact with the inner wall of the magazine 1. Thus, at the contact portion between the stopper 3 and the magazine 1, the protrusion 33 and the inner wall of the magazine 1 are in surface contact with each other, and the stability of the contact is great.

Here, the spring force of the stopper acts on the inner wall of the magazine 1 via the protrusion 33, so that the friction force can always be applied to the magazine 1 at a constant action point.

In addition, the protrusions 33 provided on the outer peripheral surfaces of the pair of tension pieces 32
The expansion angle between the pair of opposing strut pieces 32 is
Since the protrusion height of the protrusion 33 is set large, the spring repulsion force of the stopper 3 increases. Therefore, not only when the inner diameter of the magazine 1 is small, but also when the inner diameter of the magazine 1 is large, the spring repulsive force of the stopper 3 is large. As a result, the pressing and fixing force of the stopper 3 with respect to the magazine 1 increases, and the stopper 3 does not move in the longitudinal direction of the magazine 1 due to a slight external force during conveyance. Thus, the stored electronic component (chip resistor 2) is fixed by the stopper 3 and the proper stacked state is maintained.

(F) Effect of the Invention In this invention, as described above, a pair of strut pieces are formed on both sides of the butterfly motion part, and a contact flat surface is provided on the outer peripheral surface of the tip end of the strut piece. It was decided to project the protrusions whose distance was set larger than the distance between the inner walls of the magazine.

According to this invention, the contact flat surface of the protruding portion provided on the strut piece always comes into contact with the inner wall of the magazine in a planar state, and the spring force of the stopper is applied to the inner wall of the magazine through the protruding portion, and is substantially constant. The friction force of can be secured. Therefore, as in the conventional art, the disadvantages such as the friction pieces not being constant due to point or surface contact of the tension pieces depending on the inner diameter of the magazine are eliminated.

Further, since the protrusion is provided on the strut piece, the expansion angle between the pair of opposing strut pieces is set to be larger by the protrusion height of the protrusion, which increases the spring repulsion force of the stopper. To do. Therefore, as in the conventional case, since the inner diameter of the magazine is large, the frictional force and the spring repulsion force of the stopper are weakened, and the disadvantages such as the movement of the stopper position due to the vibration during conveyance are eliminated, and the proper electronic component is eliminated. It has an excellent effect that the object of the invention is achieved, such that the polymerized storage state is completely maintained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a stopper for an electronic component magazine of an embodiment, FIG. 2 is a sectional view showing a state in which the stopper is loaded in a magazine, and FIG. 3 is a state in which a conventional stopper is loaded in a magazine. It is sectional drawing shown. 1: Magazine, 2: Chip resistor 3: Stopper, 31: Butterfly moving part, 32: Stretching piece, 33: Projection part, 36a: Contact plane.

Claims (1)

[Scope of utility model registration request] 1. A pair of opposing strut pieces are formed on both sides of a butterfly motion part, and these strut pieces are constantly urged outward, and project outward toward the outer peripheral surface of the tip end portion of said strut piece, A stopper for an electronic component magazine, which has a contact flat surface that comes into contact with the inner wall of the magazine, and is provided with protruding protrusions that have a distance between both contact flat surfaces set to be larger than the distance between the inner wall of the magazine.